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Oregon State Basin Outlook Report for February, 2010


	OREGON Water Supply Outlook Report as of February 1, 2010

January storms brought new snow to Southern and Southeast Oregon 
and improvement to water supply conditions in that part of the 
state. Since January 1, water supply conditions have improved in 
the basins of southeast Oregon, while the rest of the state 
continues to wait for significant snow accumulations. 

January precipitation was near normal throughout Oregon, although 
average daily temperatures were two to eight degrees above normal 
for the month. The warm January temperatures delivered rain 
instead of snow at the lower elevations of the Oregon snow zone. 
Although January storms brought new snow to the upper elevations, 
snow is noticeably lacking below pass levels in much of the 
state. 

Spring temperatures will greatly influence how long the snowpack 
can reserve the summer streamflows. A cool spring will mean 
slower snowmelt that will feed streams longer into the season. 
Continued warm and dry temperatures would exacerbate current 
snowpack and water supply conditions. 

It will take an unusual series of wet and cold storms to bring 
the snowpack back to average at this point in the season. Without 
significant improvement to the snowpacks in Oregon, many water 
users will face reduced water supplies this coming summer. 



	SNOWPACK

In an average year, Oregon SNOTEL sites have gathered 
approximately 70% of their annual peak snow accumulation by 
February 1. This year, the winter has been warmer and drier than 
normal in most basins of the state and the statewide snowpack on 
February 1 was only 66 percent of average. Southeast Oregon 
basins are generally nearer to average as of February 1. 

Statewide, Oregon snowpacks range from 100 percent of average in 
the Owyhee and Malheur basins to 46 percent of average in the 
Willamette Basin. Snow measurements for February 1 were taken at 
78 SNOTEL sites, 44 snow courses and 29 aerial markers in Oregon.  



	PRECIPITATION

Precipitation for the month of January was quite variable 
throughout the state. January precipitation totals were near 
normal in all regions except in the Oregon Cascades, Klamath and 
Lake County. January precipitation ranged from 113 percent of 
average in the Harney basin to 71 percent of average in the Hood, 
Mile Creeks and Lower Deschutes. 

Since the beginning of the water year on October 1, precipitation 
in Oregon has ranged from 69 percent of average in the Klamath 
basin to 91 percent of average in the Upper John Day basin and 
Harney basin. 



	RESERVOIRS

The February 1 storage at 25 major Oregon reservoirs analyzed in 
this publication was 64 percent of average. A total of 1,059,300 
acre feet of water were stored on February 1, representing 39  
percent of useable capacity. Last year at this time these same 
reservoirs stored 1,287,700 acre feet of water. Reservoirs in 
many areas are well below average storage for this time of year, 
exacerbating water supply conditions. 



	STREAMFLOW

Streamflow forecasts throughout the state have declined since the 
January 1 report, reflecting water year precipitation, current 
streamflows and snowpack conditions. Water users throughout the 
state should expect below normal streamflows this summer. A 
summary of streamflow forecast for Oregon follows: 
 
        STREAM                PERIOD          PERCENT OF 
                                               AVERAGE  
 

Owyhee River Below Owyhee Dam Apr-Sep            57          

Grande Ronde at La Grande     Apr-Sep            75 

Umatilla at Pendleton         Apr-Sep            81 

Deschutes at Benham Falls     Apr-Sep            77 

MF Willamette below NF        Apr-Sep            74 

Rogue at Raygold              Apr-Sep            67 

Upper Klamath L. Net Inflow   Apr-Sep            70 

Silvies nr Burns              Apr-Sep            63 
 

The forecasts in this bulletin are a result of coordinated 
activity between the Natural Resources Conservation Service and 
the National Weather Service as an effort to provide the best 
possible service to water users.   

This report also contains data furnished by the Oregon Department 
of Water Resources, U.S. Geological Survey, NOAA National Weather 
Service and other cooperators.



	RECESSION FLOW FORECASTS FOR OREGON AS OF FEBRUARY 1, 2010


Recession flow forecasts will be presented in a new format starting this year. 
Each forecast provides a range of possible outcomes representing the
uncertainty of forecasting models. Forecast models have been redeveloped using
post 1970 data and as a result average values have changed from previous years. 

The types of forecasts in the table below are:
1) Threshold flow -- Date that the daily streamflow rate falls below the given 
threshold flow
2) Peak flow -- Maximum daily flow
3) Date of peak flow -- Date of occurrence of maximum daily flow
4) Average daily flow on a given date

Forecasts are included at key streamflow sites within the state that have
reliable daily streamflow data.  

If you have questions, comments, or concerns about changes to forecasts, 
please contact the Snow Survey Data Collection Office.


FORECAST POINT        FORECAST            FORECAST VALUE         AVERAGE
                      THRESHOLD         CHANCE OF EXCEEDING       VALUE
                                       90%      50%      10%
OWYHEE AND MALHEUR

Owyhee R nr Rome      2000 cfs        Mar 12   Apr 22   Jun  2    May  6
Owyhee R nr Rome      1000 cfs        Mar 16   Apr 28   Jun 10    May 18
Owyhee R nr Rome       500 cfs        Apr  4   May 15   Jun 25    Jun  2


UPPER JOHN DAY

John Day R at        Avg Daily
Service Creek        Flow on Aug 1      24      189      415       271


UPPER DESCHUTES AND CROOKED

Crane Prairie 
Inflow               Date of Peak_/1  May  9   May 25   Jun 10    May 25	
Crane Prairie 
Inflow               Peak Flow         113      265      415       403
Crane Prairie        Avg Daily
Inflow               Flow on Oct 1     102      175      250       269

Prineville Reservoir
Inflow                 113 cfs        Apr 25   May 20   Jun 14    Jun  3
Prineville Reservoir
Inflow                  75 cfs        May  2   May 27   Jun 21    Jun 11
Prineville Reservoir
Inflow                  50 cfs        May 10   Jun  5   Jul  1    Jun 19

Whychus Creek nr
Sisters                100 cfs	      Jun 29   Jul 26   Aug 22    Aug 16

_/1 Crane Prairie date of peak -- no prediction possible until April. 
Historical values shown. 	


ROGUE AND UMPQUA

South Umpqua R nr
Brockway_/2             90 cfs       Jul 11    Jul 29   Aug 16    Aug  8

South Umpqua R at 
Tiller                 140 cfs       Jun 12    Jul  4   Jul 28    Jul 11
South Umpqua R at 
Tiller                  90 cfs       Jul  1    Jul 24   Aug 16    Aug  1
South Umpqua R at 
Tiller                  60 cfs       Jul 23    Aug 22   Sep 21    Aug 28

_/2 South Umpqua R nr Brockway dates are based on streamflow data adjusted for 
releases from Galesville Reservoir to reflect natural flow conditions and do
not match observed gage data.  There is an approximately 20% chance in any
given year that the flow will not recede below 90 cfs; the dates given here
are for the event that the flow does recede below 90 cfs.


LAKE COUNTY AND GOOSE LAKE

Deep Ck ab Adel        100 cfs       May 17    Jun  6   Jun 26    Jun 17

Honey Ck nr Plush      100 cfs       Apr  2    May  8   Jun 13    May 16
Honey Ck nr Plush       50 cfs       Apr 18    May 20   Jun 21    Jun  4

Twentymile Ck nr Adel   50 cfs       Apr 11    May 11   Jun 10    May 30
Twentymile Ck nr Adel   10 cfs       Jun  4    Jun 27   Jul 20    Jul  7


HARNEY

Silvies R nr Burns     400 cfs       Apr 12    May  9   Jun  5    May 21
Silvies R nr Burns     200 cfs       Apr 22    May 20   Jun 17    Jun  2
Silvies R nr Burns     100 cfs       May  4    Jun  2   Jul  1    Jun 13
Silvies R nr Burns      50 cfs       May 12    Jun 19   Jul 27    Jul  3

Donner Und Blitzen R
nr Frenchglen          200 cfs       May 23    Jun 14   Jul  6    Jun 20
Donner Und Blitzen R
nr Frenchglen          100 cfs       Jun 14    Jul  4   Jul 24    Jul  9
. 


	SNOW DATA 

                    B A S I N   S U M M A R Y  O F
                   S N O W    C O U R S E    D A T A

                            FEBRUARY 2010


   SNOW COURSE         ELEVATION    DATE    SNOW   WATER     LAST    AVERAGE 
                                            DEPTH  CONTENT    YEAR     71-00
-----------------------------------------------------------------------------
  Oregon                                                               
     ALTHOUSE #2            4530    2/02/10    10      2.6       .0      3.6
     ALTHOUSE #3            5000    2/02/10    18      4.8       .0      8.8
     ANEROID LAKE  SNOTEL   7400    2/01/10   ---     10.9      9.6     16.2
     ANNIE SPRING SNOTEL    6010    2/01/10    67     21.8     18.2     26.0
     ANTHONY LAKE (REV)     7130    1/28/10    42     11.3     15.6       --
     ARBUCKLE MTN  SNOTEL   5770    2/01/10    45     11.1     10.7     13.9
     BALD MTN,OR       AM   6720    1/28/10    69     17.9     21.4     16.7
     BALD PETER             5400    1/28/10    50     15.0       --     21.9
     BARLEY CAMP       AM   6900    1/28/10    29      7.3      5.2     10.3
     BEAR FLAT MEADOW  AM   5900    1/28/10    27      6.8      7.8      7.3
     BEAVER CREEK #1        4250    1/29/10    18      5.2      8.2     11.5
     BEAVER CREEK #2        4250    1/29/10     9      2.0      6.2      8.3
     BEAVER DAM CREEK       5100    1/27/10    22      6.0     10.8      9.8
     BEAVER RES.   SNOTEL   5150    2/01/10    32      5.9      6.6      7.1
     BIG RED MTN   SNOTEL   6050    2/01/10    48     14.4      8.9     16.7
     BIG SHEEP         AM   6200    1/28/10    66     17.2     16.7     18.8
     BIGELOW CAMP  SNOTEL   5130    2/01/10    11      3.6      8.2      9.4
     BILLIE CK DVD SNOTEL   5280    2/01/10    35     10.9     17.6     16.9
     BLAZED ALDER  SNOTEL   3650    2/01/10    29      9.7     23.8     21.4
     BLUE MTN SPGS SNOTEL   5870    2/01/10    39     10.0      9.2     12.3
     BOULDER CREEK     AM   5690    1/28/10    12      2.9      2.6      2.6
     BOURNE        SNOTEL   5850    2/01/10    33     10.0      9.1     12.8
     BOWMAN SPRNGS SNOTEL   4530    2/01/10    19      4.8      6.4      7.3
     BUCK PASTURE      AM   5700    1/28/10    14      3.5      4.3      2.1
     BUCKSKIN LAKE     AM   5200    1/28/10     3      1.0       .9       .7
     BULLY CREEK       AM   5300    1/28/10    24      5.8      1.6      2.8
     CALIBAN ALT            6500    2/01/10    55     17.0      8.8     19.1
     CALL MEADOWS      AM   5340    1/28/10    21      4.8      2.6      3.6
     CAMAS CREEK #3         5850    1/27/10    30      7.6      8.4      9.7
     CASCADE SUM.  SNOTEL   5100    2/01/10    50     16.5     20.0     21.3
     CHEMULT ALT   SNOTEL   4850    2/01/10    20      5.8      5.6      7.3
     CLACKAMAS LK. SNOTEL   3400    2/01/10    13      5.4      9.1     10.2
     CLEAR LAKE    SNOTEL   3810    2/01/10    14      3.0      6.6     10.4
     COLD SPRINGS  SNOTEL   5940    2/01/10    45     14.2     20.0     21.3
     COUNTY LINE   SNOTEL   4830    2/01/10     9      3.1      3.7      4.2
     COX FLAT          AM   5750    1/28/10     9      2.7      3.7      5.3
     CRAZYMAN FLAT     AM   6100    1/28/10    23      5.8      4.5      6.3
     CRAZYMAN FLAT SNOTEL   6180    2/01/10    37      9.1      5.9     11.9
     DALY LAKE     SNOTEL   3690    2/01/10     1       .2     10.9     12.6
     DEADHORSE GRADE        3700    1/27/10     1       .2      6.9      7.4
     DEADWOOD JUNCTION      4600    1/27/10    18      4.4      7.3      6.3
     DERR                   5670    2/02/10    31      8.3      6.8      7.6
     DERR          SNOTEL   5850    2/01/10    39      9.4      7.4     10.3
     DIAMOND LAKE  SNOTEL   5280    2/01/10    18      7.4     14.8     12.9
     DOG HOLLOW        AM   4900    1/28/10     3       .9      1.4      1.0
     DOOLEY MOUNTAIN        5430    1/29/10    32      8.6      6.6      6.1
     EAST EAGLE             4400    2/01/10    53     14.9     14.3     16.2
     EILERTSON     SNOTEL   5510    2/01/10    28      8.2      7.3      7.7
     ELDORADO PASS          4600    1/29/10    21      5.0      2.0      3.2
     EMIGRANT SPGS SNOTEL   3800    2/01/10    13      3.5      6.8      5.9
     FINLEY CORRALS    AM   6000    1/28/10    39      9.8      9.3     11.1
     FISH CREEK    SNOTEL   7660    2/01/10    63     16.4     11.9     17.6
     FISH LK.      SNOTEL   4660    2/01/10    13      4.5      9.4      9.3
     FLAG PRAIRIE      AM   4750    1/28/10    22      5.3      2.8      4.1
     FOURMILE LAKE SNOTEL   5970    2/01/10    41     13.8     19.0     21.3
     GERBER RES    SNOTEL   4890    2/01/10     4      1.2      2.0      1.6
     GOLD CENTER   SNOTEL   5410    2/01/10    29      6.9      7.2      8.1
     GOVT CORRALS AM        7450    1/28/10    36      7.2      7.4       --
     GREENPOINT    SNOTEL   3310    2/01/10    21      8.1     12.2     14.4
     HART MOUNTAIN     AM   6350    1/28/10     6      1.8       .7      1.6
     HIGH PRAIRIE           6100    1/27/10    75     25.1     30.0     30.9
     HIGH RIDGE    SNOTEL   4920    2/01/10    47     13.6     15.7     16.9
     HOGG PASS     SNOTEL   4790    2/01/10    40     12.9     14.2     26.8
     HOLLAND MDWS  SNOTEL   4930    2/01/10    21      2.9     13.9     17.4
     HOWARD PRAIRIE         4500    1/27/10    12      2.8      5.9      6.1
     HUNGRY FLAT            4400    1/28/10     5      1.0       --      4.2
     IRISH-TAYLOR  SNOTEL   5540    2/01/10    56     17.7     22.6     23.8
     JUMP OFF JOE  SNOTEL   3520    2/01/10     0       .0      9.8      8.9
     KING MTN #1            4500    1/27/10    13      2.8      2.5      5.4
     KING MTN #2   SNOTEL   4340    2/01/10     7      1.7       .8      3.1
     KING MTN #3            3650    1/27/10     0       .0       .0       .8
     KING MTN #4            3050    1/27/10     0       .0       .0       .2
     LAKE CK R.S.  SNOTEL   5240    2/01/10    33      6.7      6.0      9.5
     LITTLE ALPS            6200    1/28/10    25      5.1      8.0      8.5
     LITTLE ANTONE (ALT)    5000    1/28/10    25      6.1      7.5      6.5
     LITTLE MEADOW SNOTEL   4020    2/01/10    19      8.8     16.7     18.2
     LOOKOUT BUTTE     AM   5650    1/28/10     3      1.0       .4       .4
     LOUSE CANYON      AM   6440    1/28/10    15      3.2      3.8      4.9
     LUCKY STRIKE  SNOTEL   4970    2/01/10    20      5.4      5.7      7.6
     MADISON BUTTE SNOTEL   5150    2/01/10    13      3.9      5.2      4.5
     MARION FORKS  SNOTEL   2590    2/01/10     1      1.4      4.8      8.1
     MARKS CREEK            4540    1/27/10    11      3.0      1.7      3.2
     MARY'S PEAK REV        3620    2/01/10     0       .0      7.6      4.5
     MCKENZIE      SNOTEL   4770    2/01/10    45     17.2     32.0     29.4
     MEACHAM                4300    2/02/10    26      7.4      8.4      7.6
     MILKSHAKES    SNOTEL   5580    2/01/10    80     22.9     29.6       --
     MILLER WOODS  SNOTEL    420    2/01/10     0       .0       .0       --
     MIRROR LAKE       AM   8200    1/28/10   107     31.0     44.0     46.8
     MOSS SPRINGS  SNOTEL   5760    2/01/10    57     15.1     17.3     17.5
     MT ASHLAND SWBK.       6400    2/01/10    56     18.0      8.2     20.6
     MT HOOD                5370    1/28/10    74     29.0     38.4     43.0
     MT HOOD TEST  SNOTEL   5370    2/01/10    71     26.9     33.7     38.6
     MT HOWARD     SNOTEL   7910    2/01/10    29     10.6     10.3     10.3
     MUD RIDGE     SNOTEL   4070    2/01/10    36     11.3     19.0     16.9
     NEW CRESCENT  SNOTEL   4910    2/01/10    31      8.3     10.7      9.2
     NEW DUTCHMAN #3        6320    1/28/10    72     23.6     31.9     35.7
     NORTH FK RES  SNOTEL   3060    2/01/10    12      4.2     20.4     11.6
     NORTH UMPQUA           4220    2/03/10     5      2.0     10.8      8.7
     OCHOCO MEADOWS         5200    1/27/10    37      9.0      5.0      7.6
     OCHOCO MEADOW SNOTEL   5430    2/01/10    31      5.1      5.5      7.3
     OREGON CANYON     AM   6950    1/28/10    18      3.8      3.5      4.5
     PAGE MTN               4050    2/02/10     1       .3       .0      1.1
     PARK H.Q. REV          6550    1/28/10    90     29.6     31.0     37.5
     PATTON MEADOWS    AM   6800    1/28/10    42     10.5      8.2     10.9
     PEAVINE RIDGE SNOTEL   3420    2/01/10    10      4.6     10.2      9.5
     PUEBLO SUMMIT     AM   6800    1/28/10    14      2.9      3.3      1.9
     QUARTZ MTN    SNOTEL   5720    2/01/10     4      1.6       .9      2.6
     RACING CREEK           4800    1/28/10    26      7.4       --      9.5
     R.R. OVERPASS SNOTEL   2680    2/01/10     0       .0       .0       .5
     RED BUTTE #1           4560    1/26/10     6      1.8     10.9      8.3
     RED BUTTE #2           4000    1/26/10     0       .0       .0      4.4
     RED BUTTE #3           3500    1/26/10     0       .0       .0      2.0
     RED BUTTE #4           3000    1/26/10     0       .0       .0      1.0
     RED HILL      SNOTEL   4410    2/01/10    57     22.9     35.6     30.2
     ROARING RIVER SNOTEL   4950    2/01/10    27     10.2     21.3     19.3
     ROCK SPRINGS  SNOTEL   5290    2/01/10    25      5.8      1.2      4.1
     ROGGER MEADOWS    AM   6500    1/28/10    26      6.5     13.9      8.6
     SADDLE MTN    SNOTEL   3110    2/01/10     0       .0      4.5      5.4
     SALT CK FALLS SNOTEL   4220    2/01/10    16      5.6     15.0     13.1
     SANTIAM JCT.  SNOTEL   3740    2/01/10     7      2.8     14.2     14.6
     SCHNEIDER MDW SNOTEL   5400    2/01/10    68     17.7     14.4     22.3
     SEINE CREEK   SNOTEL   2060    2/01/10     0       .0       .1      2.7
     SEVENMILE MARSH SNTL   5700    2/01/10    48     13.6     16.0     20.1
     SHERMAN VALLEY    AM   6600    1/28/10    32      8.0      8.5      7.9
     SILVER BURN            3720    1/28/10    11      3.4     11.0      8.4
     SILVER CREEK  SNOTEL   5740    2/01/10    30      9.4      7.7      7.8
     SILVIES       SNOTEL   6990    2/01/10    37      9.2      6.9     11.1
     SISKIYOU SUMMIT REV    4630    2/01/10    15      3.7      5.9      4.6
     SKI BOWL ROAD          6000    2/01/10    49     13.5      7.3     16.1
     SNOW MTN      SNOTEL   6220    2/01/10    27      4.8      4.3      7.8
     SF BULL RUN   SNOTEL   2690    2/01/10     0       .0      8.7      2.6
     STARR RIDGE   SNOTEL   5250    2/01/10    21      5.3      6.2      5.2
     STRAWBERRY    SNOTEL   5770    2/01/10    18      4.1      4.0      4.5
     SUMMER RIM    SNOTEL   7080    2/01/10    34     10.0      7.5     11.4
     SUMMIT LAKE   SNOTEL   5610    2/01/10    61     19.1     22.8     24.4
     SUN PASS      SNOTEL   5400    2/01/10    43     13.7     14.4       --
     SWAN LAKE MTN SNOTEL   6830    2/01/10    47     13.4     11.4       --
     SYCAN FLAT        AM   5500    1/28/10    16      5.0      8.8      4.5
     TANGENT                5400    1/29/10    43     13.4     11.2     15.2
     TAYLOR BUTTE  SNOTEL   5030    2/01/10    19      5.6      5.3      5.4
     TAYLOR GREEN  SNOTEL   5740    2/01/10    50     13.3     13.3     14.5
     THREE CK MEAD SNOTEL   5690    2/01/10    37      3.4     10.0     12.1
     TIPTON        SNOTEL   5150    2/01/10    31      7.6      6.7     10.3
     TOKETEE AIRSTRIP SN    3240    2/01/10     0       .3      5.1      5.5
     TOLLGATE               5070    2/02/10    55     18.8     19.2     19.5
     TRAP CREEK             3800    2/03/10     3       .8      9.5      7.5
     TROUT CREEK       AM   7800    1/28/10    39      7.8      6.8      7.0
     TV RIDGE #2       AM   7000    1/28/10    16      4.2      6.5     11.2
     V LAKE            AM   6600    1/28/10    29      7.2      3.4      5.6
     WEST EAGLE MEADOWS     5500    1/28/10    74     20.0     21.8     23.2
     WOLF CREEK    SNOTEL   5630    2/01/10    37      9.4     11.0     11.2
  California                                                           
     ADIN MOUNTAIN          6350    1/28/10    34      8.2      7.4      8.5
     ADIN MTN SNOTEL        6190    2/01/10    34     10.4      8.4      9.0
     BLUE LAKE RANCH        6800    2/01/10    24      6.2      5.8       --
     CEDAR PASS             7100    2/02/10    36      9.2      9.0     10.9
     CEDAR PASS SNOTEL      7030    2/01/10    41     11.5      9.7     11.4
     CROWDER FLAT AM        5200    1/28/10    12      4.0      3.2      2.6
     CROWDER FLAT SNOTEL    5170    2/01/10    15      5.0      2.8      3.7
     DISMAL SWAMP SNOTEL    7360    2/01/10    52     14.3     12.0     18.0
     STATE LINE        AM   5750    1/28/10    36      9.0      4.0      4.8
  Idaho                                                                
     BATTLE CREEK      AM   5720    1/28/10    13      3.0      6.8      3.4
     BULL BASIN        AM   5460    1/28/10    11      2.5      2.8      2.1
     MUD FLAT      SNOTEL   5730    2/01/10    28      6.4      5.0      5.2
     RED CANYON        AM   6650    1/28/10    29      7.0      4.5      6.0
     SILVER CITY            6400    1/28/10    47     12.8     13.4     12.0
     SOUTH MTN     SNOTEL   6500    2/01/10    43     10.7      9.2     12.8
     SUCCOR CREEK      AM   6100    1/28/10    30      8.1      7.2      5.7
     VAUGHT RANCH      AM   5830    1/28/10    15      3.5      7.4      4.1
  Nevada                                                               
     BALD MOUNTAIN     AM   6720    1/28/10    21      5.9      3.0      2.7
     BEAR CREEK SNOTEL      7800    2/01/10    32      6.5     14.2     12.5
     BIG BEND SNOTEL        6700    2/01/10    22      5.6      7.5      6.7
     BUCKSKIN,L SNOTEL      6700    2/01/10    34      6.5      6.2      6.4
     COLUMBIA BASIN    AM   6650    1/28/10    29      6.1      8.9      7.3
     DISASTER PEAK SNOTEL   6500    2/01/10    20      4.1      6.1      9.1
     FAWN CREEK SNOTEL      7050    2/01/10    44      9.9     10.2     11.1
     FRY CANYON             6700    1/26/10    27      6.6      7.9      6.0
     GOLD CREEK             6600    1/26/10    21      4.5      7.0      4.2
     GRANITE PEAK SNOTEL    7800    2/01/10    43      8.7      8.4     14.2
     JACK CREEK, U SNOTEL   7280    2/01/10    40      9.2      9.6     11.4
     LAMANCE CREEK SNOTEL   6000    2/01/10    32      7.0      5.9      9.4
     LAUREL DRAW SNOTEL     6700    2/01/10    33      7.2      8.6      7.2
     LITTLE BALLY MTN. AM   6000    1/28/10    18      5.0      5.3      3.0
     MERRIT MOUNTAIN   AM   7000    1/28/10    21      4.4      8.9      5.6
     MIDAS            (d)   7200    1/28/10    18      4.0      2.0      2.8
     QUINN RIDGE       AM   6300    1/28/10     6      2.0      1.7      2.1
     SEVENTYSIX CK SNOTEL   7100    2/01/10    23      5.1      6.5      7.9
     STAG MOUNTAIN     AM   7700    1/28/10     7      1.5      4.0      4.2
     TAYLOR CANYON SNOTEL   6200    2/01/10    15      3.4      6.7      3.9
     TOE JAM AM        AM   7700    1/28/10    14      3.5      8.0      6.9
     TREMEWAN RANCH         5700    1/26/10    14      3.1      3.0      1.7

 (d) denotes discontinued site.
. 


	OWYHEE AND MALHEUR BASINS as of February 1, 2010

As noted above, the southeastern corner of Oregon has picked up 
some precipitation during January from storm tracks that missed 
much of the rest of the state. Following a drier than normal 
December, January precipitation in the Owyhee and Malheur basins 
was 97 percent of average. Since the beginning of the water year, 
precipitation in the Owyhee and Malheur basins has been 87 
percent of average. The February 1 snowpack as measured at 5 snow 
courses, 18 aerial markers and 10 SNOTEL sites was a perfect 100 
percent of average. The Owyhee and Malheur basin snowpack was the 
best in the state on February 1. 

February 1 storage at the four irrigation reservoirs in the 
Owyhee and Malheur basins was 39 percent of average or 22 percent 
of capacity.

The April through September streamflow forecasts in the Owyhee 
and Malheur basins range from 57 percent of average for the 
Owyhee River below Owyhee Dam to 67 percent of average for the 
Malheur near Drewsey. Streamflow forecasts have declined 
measurably since last month. Water users in the Owyhee and 
Malheur should expect greatly reduced streamflows in the summer 
of 2010.  


================================================================================
                              OWYHEE AND MALHEUR BASINS
                      Streamflow Forecasts - February 1, 2010
================================================================================
            |  <=== Drier ===  Future  Conditions  === Wetter ===>  |
            |                                                       |
Forecast Pt |  ============== Chance of Exceeding * ==============  |
   Forecast |  90%       70%   |       50%       |  30%       10%   | 30 Yr Avg
   Period   |(1000AF)  (1000AF)|(1000AF) (% AVG.)|(1000AF)  (1000AF)| (1000AF)
================================================================================
Malheur R nr Drewsey
   FEB-JUL       36       63        86       68       112      157       127  
   APR-SEP     17.0       35        51       67        70      103        76  

NF Malheur R at Beulah
   FEB-JUL       33       52        67       74        84      114        90  

Owyhee R blw Owyhee Dam (2)
   FEB-JUL       42      185       435       62       685     1050       700  
   FEB-SEP       22      197       455       62       715     1090       730  
   APR-SEP      9.0       94       245       57       395      620       430  

Owyhee R nr Rome
   FEB-JUL      181      310       420       64       545      760       655  
   FEB-SEP      190      325       435       64       560      780       675  
   APR-SEP      110      192       260       65       340      475       400  

================================================================================
   * 90%, 70%, 50%, 30%, and 10% chances of exceeding are the probabilities that
     the actual volume will exceed the volumes in the table.

   The average is computed for the 1971-2000 base period.

   (1) - The values listed under the 10% and 90% Chance of Exceeding are
         actually 5% and 95% exceedance levels.
   (2) - The value is natural volume - actual volume may be affected by upstream
         water management.
================================================================================
                              OWYHEE AND MALHEUR BASINS
                   Reservoir Storage (1000AF) End of January
================================================================================
                                Usable     ********** Usable Storage *********
Reservoir                      Capacity    This Year    Last Year      Average
================================================================================
BEULAH RES                        60.0         12.7         14.4         28.5   
BULLY CREEK                       30.0          8.0          9.2         13.6   
OWYHEE                           715.0        186.0        206.6        438.3   
WARMSPRINGS                      191.0         15.3         20.0         87.7   
================================================================================

================================================================================
                              OWYHEE AND MALHEUR BASINS
                   Watershed Snowpack Analysis - February 1, 2010
================================================================================
                                 Number of           This Year as Percent of
Watershed                        Data Sites          Last Year       Average
================================================================================
Owyhee                               20                 85                 96
Upper Malheur                         8                158                112
Jordan Creek                          4                109                106
Bully Creek                           3                200                147
Willow Creek                          4                174                152
================================================================================


	BURNT, POWDER, PINE, GRANDE RONDE AND IMNAHA BASINS as of February 1, 2010

Following a drier than normal December, January precipitation in 
the Burnt, Powder, Pine, Grande Ronde, and Imnaha basins was near 
normal. Since the beginning of water year 2010, basinwide 
precipitation has been 89 percent of average. The February 1 
snowpack as measured at 8 snow courses, 5 aerial markers and 15 
SNOTEL sites was 83 percent of average.  

February 1 storage at Phillips Lake, Thief Valley and Unity 
reservoirs was 88 percent of average or 53 percent of capacity.

The April through September streamflow forecasts range from 69 
percent of average for the Burnt River near Hereford to 83  
percent of average for the Lostine River near Lostine and Pine 
Creek near Oxbow. Elsewhere in the basin, the Grande Ronde River 
at LaGrande is forecast to be 75 percent of average for the April 
through September period. Water supply forecasts have dropped a 
few percentage points from last month. Water users in the basin 
should expect greatly reduced streamflows in the summer of 2010.  


================================================================================
                              BURNT, POWDER, PINE, GRANDE RONDE AND IMNAHA BASINS
                      Streamflow Forecasts - February 1, 2010
================================================================================
            |  <=== Drier ===  Future  Conditions  === Wetter ===>  |
            |                                                       |
Forecast Pt |  ============== Chance of Exceeding * ==============  |
   Forecast |  90%       70%   |       50%       |  30%       10%   | 30 Yr Avg
   Period   |(1000AF)  (1000AF)|(1000AF) (% AVG.)|(1000AF)  (1000AF)| (1000AF)
================================================================================
Bear Ck nr Wallowa
   APR-SEP       34       45        53       82        61       72        65  

Burnt R nr Hereford
   FEB-JUL       21       31        39       68        48       63        57  
   APR-SEP     13.1       21        27       69        34       46        39  

Catherine Ck nr Union
   APR-JUL       37       45        51       82        57       67        62  
   APR-SEP       41       49        55       83        61       72        66  

Deer Ck nr Sumpter
   FEB-JUL     10.3     13.3      15.5       80      17.9       22      19.4  

Grande Ronde R at La Grande
   MAR-JUL      124      162       190       77       220      270       247  
   APR-SEP       84      116       140       75       167      210       188  

Grande Ronde R at Troy
   MAR-JUL      730     1120      1300       82      1480     1870      1580  
   APR-SEP      595      950      1110       81      1270     1620      1370  

Imnaha R at Imnaha
   APR-JUL      120      177       215       80       255      310       270  
   APR-SEP      134      194       235       80       275      335       295  

Lostine R nr Lostine
   APR-JUL       71       84        94       84       104      120       112  
   APR-SEP       75       89       100       83       111      129       121  

Pine Ck nr Oxbow
   FEB-JUL      111      152       180       87       210      250       208  
   APR-JUL       75      104       123       83       142      171       148  
   APR-SEP       78      107       127       83       147      176       154  

Powder R nr Sumpter
   FEB-JUL       36       48        57       77        67       83        74  
   APR-JUL       26       35        43       74        51       65        58  
   APR-SEP       26       36        44       75        53       67        59  

Wolf Ck Reservoir Inflow (2)
   MAR-JUN      7.2     11.2      14.0       86      16.8       21      16.2  

================================================================================
   * 90%, 70%, 50%, 30%, and 10% chances of exceeding are the probabilities that
     the actual volume will exceed the volumes in the table.

   The average is computed for the 1971-2000 base period.

   (1) - The values listed under the 10% and 90% Chance of Exceeding are
         actually 5% and 95% exceedance levels.
   (2) - The value is natural volume - actual volume may be affected by upstream
         water management.
================================================================================
                              BURNT, POWDER, PINE, GRANDE RONDE AND IMNAHA BASINS
                   Reservoir Storage (1000AF) End of January
================================================================================
                                Usable     ********** Usable Storage *********
Reservoir                      Capacity    This Year    Last Year      Average
================================================================================
PHILLIPS LAKE                     73.5         39.6         36.5         40.8   
THIEF VALLEY                      17.4         13.7         13.5         16.5   
UNITY                             25.2          8.2         10.2         12.9   
WALLOWA LAKE                      37.5         12.3         14.8         17.9   
WOLF CREEK                        10.4          3.7          3.0          3.2   
================================================================================

================================================================================
                              BURNT, POWDER, PINE, GRANDE RONDE AND IMNAHA BASINS
                   Watershed Snowpack Analysis - February 1, 2010
================================================================================
                                 Number of           This Year as Percent of
Watershed                        Data Sites          Last Year       Average
================================================================================
Upper Grande Ronde                   11                 89                 89
Wallowa                               8                 85                 79
Imnaha                                6                 94                 78
Powder                               13                 90                 82
Burnt                                 5                124                102
================================================================================


	UMATILLA, WALLA WALLA, WILLOW, ROCK AND LOWER JOHN DAY BASINS as of February 1, 2010

January brought mixed water supply conditions to the Umatilla, 
Walla Walla, Willow, Rock and Lower John Day basins. While 
January precipitation was 90% of average, the snow conditions 
deteriorated over the last month. While there was an overall 
increase in snow in the basin, it was not up to the normal 
accumulation rate for January. 

As of February 1, total precipitation for water year 2010 has 
been 86 percent of average. The February 1 snowpack as measured 
at 2 snow courses and 7 SNOTEL sites was 79 percent of average, a 
16 point decline from last month.

February 1 storage at Cold Springs and MacKay reservoirs was 35 
percent of average or 16 percent of capacity.

April through September streamflow forecasts range from 81 
percent of average for the Umatilla river at Pendleton to 83 
percent of average for Butter Creek near Pine City. Elsewhere in 
the basin, the South Fork Walla Walla River near Milton-Freewater 
is forecast to be 82 percent of average for the same period. 
Streamflow forecasts have dropped measurably in the basin since 
the last report. 

At this point in the season, water users in the Umatilla, Walla 
Walla, Willow, Rock and Lower John Day basins should expect well 
below normal streamflow conditions for the summer of 2010. 


================================================================================
                              UMATILLA, WALLA WALLA, WILLOW, ROCK AND LOWER JOHN DAY BASINS
                      Streamflow Forecasts - February 1, 2010
================================================================================
            |  <=== Drier ===  Future  Conditions  === Wetter ===>  |
            |                                                       |
Forecast Pt |  ============== Chance of Exceeding * ==============  |
   Forecast |  90%       70%   |       50%       |  30%       10%   | 30 Yr Avg
   Period   |(1000AF)  (1000AF)|(1000AF) (% AVG.)|(1000AF)  (1000AF)| (1000AF)
================================================================================
Butter Ck nr Pine City
   MAR-JUL      6.6     10.4      12.9       86      15.4     19.2      15.0  
   APR-SEP      4.0      6.7       8.5       83      10.3     13.0      10.2  

McKay Ck nr Pilot Rock
   APR-SEP      3.4     14.5        22       82        30       41        27  

Rhea Ck nr Heppner
   FEB-JUL      5.4      9.1      11.7       87      14.3     18.0      13.5  

Umatilla R ab Meacham Ck nr Gibbon
   APR-JUL       38       50        59       81        68       80        73  
   MAR-SEP       62       77        87       82        97      112       106  
   APR-SEP       43       55        64       81        73       85        79  

Umatilla R at Pendleton
   APR-JUL       72      101       121       81       141      170       149  
   MAR-SEP      130      164       187       81       210      245       230  
   APR-SEP       76      106       126       81       146      176       155  

SF Walla Walla R nr Milton-Freewater
   APR-JUL       34       41        45       83        49       56        54  
   MAR-SEP       56       64        70       86        76       84        81  
   APR-SEP       43       50        55       82        60       67        67  

Willow Ck ab Willow Ck Lake nr Heppner
   FEB-JUL      5.2      8.5      10.8       81      13.1     16.4      13.3  
   APR-JUL      1.8      4.2       5.9       80       7.6     10.0       7.4  

================================================================================
   * 90%, 70%, 50%, 30%, and 10% chances of exceeding are the probabilities that
     the actual volume will exceed the volumes in the table.

   The average is computed for the 1971-2000 base period.

   (1) - The values listed under the 10% and 90% Chance of Exceeding are
         actually 5% and 95% exceedance levels.
   (2) - The value is natural volume - actual volume may be affected by upstream
         water management.
================================================================================
                              UMATILLA, WALLA WALLA, WILLOW, ROCK AND LOWER JOHN DAY BASINS
                   Reservoir Storage (1000AF) End of January
================================================================================
                                Usable     ********** Usable Storage *********
Reservoir                      Capacity    This Year    Last Year      Average
================================================================================
COLD SPRINGS                      50.0          7.2         10.8         21.4   
MCKAY                             73.8         12.5         31.6         34.1   
WILLOW CREEK                       1.8          0.2          0.0         ----   
================================================================================

================================================================================
                              UMATILLA, WALLA WALLA, WILLOW, ROCK AND LOWER JOHN DAY BASINS
                   Watershed Snowpack Analysis - February 1, 2010
================================================================================
                                 Number of           This Year as Percent of
Watershed                        Data Sites          Last Year       Average
================================================================================
Walla Walla                           3                 82                 81
Umatilla                              7                 89                 82
McKay Creek                           4                 77                 74
================================================================================


	UPPER JOHN DAY BASIN as of February 1, 2010

The Upper John Day was one of two basins in the state to have 
above average precipitation in January. This was a welcome change 
following a drier than normal December. As of February 1, total 
precipitation for water year 2010 has been 91 percent of average. 
On February 1, the snowpack as measured at 4 snow courses and 13 
SNOTEL sites was 82 percent of average in the Upper John Day 
basin.

April through September streamflow forecasts range from 69 
percent of average for Mountain Creek near Mitchell to 86 percent 
of average for Strawberry Creek near Prairie City. Elsewhere in 
the basin, the Middle Fork John Day at Monument is forecast to be 
83 percent of average for the same period. Streamflow forecasts 
have dropped measurably in the basin since the last report. 
At this point in the season, water users in the Upper John Day 
basin should expect well below normal streamflows for the summer 
of 2010. 


================================================================================
                              UPPER JOHN DAY BASIN
                      Streamflow Forecasts - February 1, 2010
================================================================================
            |  <=== Drier ===  Future  Conditions  === Wetter ===>  |
            |                                                       |
Forecast Pt |  ============== Chance of Exceeding * ==============  |
   Forecast |  90%       70%   |       50%       |  30%       10%   | 30 Yr Avg
   Period   |(1000AF)  (1000AF)|(1000AF) (% AVG.)|(1000AF)  (1000AF)| (1000AF)
================================================================================
Camas Ck nr Ukiah
   MAR-JUL       26       36        42       81        48       58        52  
   APR-SEP     15.0       24        30       79        36       45        38  

MF John Day R at Ritter
   MAR-JUL       77      109       130       82       151      183       159  
   APR-SEP       58       85       104       81       123      150       128  

NF John Day R at Monument
   MAR-JUL      415      565       665       84       765      915       790  
   APR-SEP      300      425       510       83       595      720       615  

Mountain Ck nr Mitchell
   FEB-JUL      1.3      3.5       5.0       71       6.5      8.7       7.0  
   APR-SEP      0.5      2.1       3.2       69       4.3      5.9       4.6  

Strawberry Ck nr Prairie City
   MAR-JUL      3.9      5.5       6.5       88       7.5      9.1       7.4  
   APR-SEP      4.0      5.6       6.7       86       7.8      9.4       7.8  

================================================================================
   * 90%, 70%, 50%, 30%, and 10% chances of exceeding are the probabilities that
     the actual volume will exceed the volumes in the table.

   The average is computed for the 1971-2000 base period.

   (1) - The values listed under the 10% and 90% Chance of Exceeding are
         actually 5% and 95% exceedance levels.
   (2) - The value is natural volume - actual volume may be affected by upstream
         water management.
================================================================================
                              UPPER JOHN DAY BASIN
                   Watershed Snowpack Analysis - February 1, 2010
================================================================================
                                 Number of           This Year as Percent of
Watershed                        Data Sites          Last Year       Average
================================================================================
North Fork John Day                   7                 99                 78
John Day above Kimberly               5                109                 80
================================================================================


	UPPER DESCHUTES AND CROOKED BASINS as of February 1, 2010

The Upper Deschutes and Crooked River basins recorded another 
month with below normal precipitation. Within the basins, the 
Ochoco Mountains picked up near normal January precipitation. 
 
As of February 1, total precipitation for water year 2010 has 
been 80 percent of average. On February 1, the snowpack in the 
Upper Deschutes and Crooked River basins was 66 percent of 
average, a decline of 10 percentage points from last month. 
Measurements were taken at 8 snow courses and 14 SNOTEL sites. 

February 1 storage at five irrigation reservoirs in the Upper 
Deschutes and Crooked River basins was 110 percent of average or 
73 percent of capacity.

There has been a significant decline in the summer streamflow 
forecasts since the last report. April through September 
streamflow forecasts range from 55 percent of average for 
Crescent Creek near Crescent to 77 percent of average for the 
Deschutes River at Benham Falls near Bend. Elsewhere in the 
basin, the Ochoco Reservoir Inflow is forecast to be 58 percent 
of average for the April through September period.  Water users 
in the Upper Deschutes and Crooked River basin should expect 
greatly reduced streamflows during the summer of 2010.


================================================================================
                              UPPER DESCHUTES AND CROOKED BASINS
                      Streamflow Forecasts - February 1, 2010
================================================================================
            |  <=== Drier ===  Future  Conditions  === Wetter ===>  |
            |                                                       |
Forecast Pt |  ============== Chance of Exceeding * ==============  |
   Forecast |  90%       70%   |       50%       |  30%       10%   | 30 Yr Avg
   Period   |(1000AF)  (1000AF)|(1000AF) (% AVG.)|(1000AF)  (1000AF)| (1000AF)
================================================================================
Crane Prairie Reservoir Inflow (2)
   FEB-JUL       36       46        53       68        60       70        78  
   APR-JUL       25       32        37       63        42       49        59  
   FEB-SEP       51       64        73       65        82       95       112  
   APR-SEP       40       51        59       63        67       78        93  

Crescent Ck nr Crescent (2)
   FEB-JUL      1.6      8.2      12.7       55      17.2       24        23  
   APR-JUL      0.9      6.0       9.5       55      13.0     18.1      17.2  
   FEB-SEP      3.2     10.1      14.8       55      19.5       26        27  
   APR-SEP      2.7      8.0      11.6       55      15.2       20        21  

Deschutes R at Benham Falls nr Bend (2)
   FEB-JUL      325      365       390       78       415      455       500  
   APR-JUL      240      260       275       79       290      310       350  
   FEB-SEP      450      500       530       78       560      610       680  
   APR-SEP      350      385       405       77       425      460       525  

Deschutes R bl Snow Ck nr La Pine
   FEB-JUL     15.8       24        29       64        34       42        45  
   APR-JUL     10.4     16.0      19.8       60        24       29        33  
   FEB-SEP       27       37        43       61        49       59        71  
   APR-SEP       21       29        34       58        39       47        59  

Little Deschutes R nr La Pine (2)
   FEB-JUL       23       44        58       57        72       93       101  
   APR-JUL       21       32        40       56        48       59        71  
   FEB-SEP       24       46        62       56        78      100       110  
   APR-SEP       22       36        45       56        54       68        80  

Ochoco Reservoir Inflow (2)
   FEB-JUL      9.5     19.3        26       61        33       42        43  
   APR-JUL      3.0      8.8      12.8       58      16.8       23        22  
   FEB-SEP      7.7     18.0        25       58        32       42        43  
   APR-SEP      2.4      8.5      12.7       58      16.9       23        22  

Prineville Reservoir Inflow (2)
   FEB-JUL       31       92       133       60       174      235       221  
   APR-JUL      5.0       40        64       59        88      123       108  
   FEB-SEP       27       89       131       59       173      235       222  
   APR-SEP      4.0       40        65       60        90      126       109  

Whychus Ck nr Sisters
   FEB-JUL       24       28        31       72        34       38        43  
   APR-JUL       22       24        26       72        28       30        36  
   FEB-SEP       30       35        39       72        43       48        54  
   APR-SEP       29       33        35       71        37       41        49  

================================================================================
   * 90%, 70%, 50%, 30%, and 10% chances of exceeding are the probabilities that
     the actual volume will exceed the volumes in the table.

   The average is computed for the 1971-2000 base period.

   (1) - The values listed under the 10% and 90% Chance of Exceeding are
         actually 5% and 95% exceedance levels.
   (2) - The value is natural volume - actual volume may be affected by upstream
         water management.
================================================================================
                              UPPER DESCHUTES AND CROOKED BASINS
                   Reservoir Storage (1000AF) End of January
================================================================================
                                Usable     ********** Usable Storage *********
Reservoir                      Capacity    This Year    Last Year      Average
================================================================================
CRANE PRAIRIE                     55.3         37.6         44.7         39.6   
CRESCENT LAKE                     86.9         66.7         63.1         49.1   
OCHOCO                            47.5         18.6         23.1         21.0   
PRINEVILLE                       153.0         93.7         90.0         90.0   
WICKIUP                          200.0        180.1        189.2        161.6   
================================================================================

================================================================================
                              UPPER DESCHUTES AND CROOKED BASINS
                   Watershed Snowpack Analysis - February 1, 2010
================================================================================
                                 Number of           This Year as Percent of
Watershed                        Data Sites          Last Year       Average
================================================================================
Crooked                               4                118                 78
Little Deschutes                      4                 84                 80
Deschutes above Wickiup Rese          4                 70                 71
Tumalo and Squaw Creeks               5                 68                 61
================================================================================


	HOOD, MILE CREEKS AND LOWER DESCHUTES BASINS as of February 1, 2010

The Hood, Mile Creeks and Lower Deschutes recorded another month 
with below normal precipitation. January temperatures were warmer 
than normal and some of the lower elevation SNOTEL sites actually 
lost snow as precipitation feel as rain. As of February 1, total 
precipitation since the beginning of the water year has been 79 
percent of average in the Hood, Mile Creeks and Lower Deschutes 
basins. On February 1, the snowpack in the basin was 62 percent 
of average, a drop of 19 percentage points from last month. Snow 
measurements were taken at 5 snow courses and 8 SNOTEL sites. 

The April through September streamflow for Hood River at Tucker 
Bridge is forecast to be 71 percent of average. This is a 14 
point drop from last month. At this point in the season, water 
users in the Hood, Mile Creeks and Lower Deschutes basin should 
expect greatly reduced streamflows during the summer of 2010.   


================================================================================
                              HOOD, MILE CREEKS AND LOWER DESCHUTES BASINS
                      Streamflow Forecasts - February 1, 2010
================================================================================
            |  <=== Drier ===  Future  Conditions  === Wetter ===>  |
            |                                                       |
Forecast Pt |  ============== Chance of Exceeding * ==============  |
   Forecast |  90%       70%   |       50%       |  30%       10%   | 30 Yr Avg
   Period   |(1000AF)  (1000AF)|(1000AF) (% AVG.)|(1000AF)  (1000AF)| (1000AF)
================================================================================
Hood R At Tucker Bridge
   APR-JUL      112      143       163       72       183      215       228  
   APR-SEP      137      170       192       71       215      245       271  

================================================================================
   * 90%, 70%, 50%, 30%, and 10% chances of exceeding are the probabilities that
     the actual volume will exceed the volumes in the table.

   The average is computed for the 1971-2000 base period.

   (1) - The values listed under the 10% and 90% Chance of Exceeding are
         actually 5% and 95% exceedance levels.
   (2) - The value is natural volume - actual volume may be affected by upstream
         water management.
================================================================================
                              HOOD, MILE CREEKS AND LOWER DESCHUTES BASINS
                   Reservoir Storage (1000AF) End of January
================================================================================
                                Usable     ********** Usable Storage *********
Reservoir                      Capacity    This Year    Last Year      Average
================================================================================
CLEAR LAKE (WASCO)                11.9          3.3          5.2          3.7   
================================================================================

================================================================================
                              HOOD, MILE CREEKS AND LOWER DESCHUTES BASINS
                   Watershed Snowpack Analysis - February 1, 2010
================================================================================
                                 Number of           This Year as Percent of
Watershed                        Data Sites          Last Year       Average
================================================================================
Hood River                            6                 68                 70
Mile Creeks                           1                 84                 81
White River                           7                 70                 62
================================================================================


	LOWER COLUMBIA BASIN as of February 1, 2010

On February 1, the snowpack in the Columbia basin above The 
Dalles was 79 percent of average, down 6 points from last month. 
As in the rest of the region, a warmer and drier than normal 
January contributed to the February 1 snow conditions. 

Since the beginning of the water year, precipitation in the 
Columbia basin has been 84 percent of average. Locally, January 
precipitation in the Sandy basin was 74 percent of average. 

At this point in the season, the April through September 
streamflow forecast for the Columbia at The Dalles is 74 percent 
of average. For the Sandy near Marmot, the April through 
September streamflow forecast is 83 percent of average an 8 point 
drop from last month. Water users throughout the Columbia basin 
should expect greatly reduced supplies this coming summer.
    

================================================================================
                              LOWER COLUMBIA BASIN
                      Streamflow Forecasts - February 1, 2010
================================================================================
            |  <=== Drier ===  Future  Conditions  === Wetter ===>  |
            |                                                       |
Forecast Pt |  ============== Chance of Exceeding * ==============  |
   Forecast |  90%       70%   |       50%       |  30%       10%   | 30 Yr Avg
   Period   |(1000AF)  (1000AF)|(1000AF) (% AVG.)|(1000AF)  (1000AF)| (1000AF)
================================================================================
Columbia R at The Dalles (2)
   APR-JUL    47300    56200     62300       74     68400    77300     84600  
   APR-SEP    55100    65500     72600       74     79700    90100     98600  

Sandy R nr Marmot
   APR-JUL      189      230       260       83       290      330       313  
   APR-SEP      225      270       300       83       330      375       363  

================================================================================
   * 90%, 70%, 50%, 30%, and 10% chances of exceeding are the probabilities that
     the actual volume will exceed the volumes in the table.

   The average is computed for the 1971-2000 base period.

   (1) - The values listed under the 10% and 90% Chance of Exceeding are
         actually 5% and 95% exceedance levels.
   (2) - The value is natural volume - actual volume may be affected by upstream
         water management.
================================================================================
                              LOWER COLUMBIA BASIN
                   Watershed Snowpack Analysis - February 1, 2010
================================================================================
                                 Number of           This Year as Percent of
Watershed                        Data Sites          Last Year       Average
================================================================================
Sandy                                 7                 53                 59
================================================================================


	WILLAMETTE BASIN as of February 1, 2010

January precipitation in the Willamette basin was less than 
normal and fell as rain rather than snow in the low to mid 
elevations of the snow zone. As of February 1, total 
precipitation for water year 2010 has been 85 percent of average. 
On February 1, the snowpack in the Willamette basin was 46 
percent of average, the lowest in the state. Snow measurements 
were taken at 2 snow courses and 20 SNOTEL sites.

The February 1 storage at Timothy Lake and Henry Hagg reservoirs 
in the Willamette basin was 47 percent of average or 35 percent 
of capacity.

The April through September streamflow forecasts for the 
Willamette basin range from 71 percent of average for Green Peter 
Lake Inflow to 85 percent of average for the Willamette River at 
Salem. Elsewhere in the basin, the McKenzie near Vida is forecast 
to be 82 percent of average. Depending on their reliance on low 
to mid elevation snow melt, Willamette basin streamflow forecasts 
have dropped up to 19 points since last month. Water users in the 
basin that depend on snowmelt should expect well below normal 
water supplies this coming season. 
   

================================================================================
                              WILLAMETTE BASIN
                      Streamflow Forecasts - February 1, 2010
================================================================================
            |  <=== Drier ===  Future  Conditions  === Wetter ===>  |
            |                                                       |
Forecast Pt |  ============== Chance of Exceeding * ==============  |
   Forecast |  90%       70%   |       50%       |  30%       10%   | 30 Yr Avg
   Period   |(1000AF)  (1000AF)|(1000AF) (% AVG.)|(1000AF)  (1000AF)| (1000AF)
================================================================================
Blue Lake Inflow (1,2)
   FEB-MAY       64      107       127       78       147      190       163  
   APR-JUL       29       55        67       78        79      105        86  
   APR-SEP       30       55        67       78        79      104        86  

Clackamas R at Estacada
   APR-JUL      380      465       520       81       575      660       640  
   APR-SEP      460      545       605       81       665      750       748  

Clackamas R ab Three Lynx (2)
   APR-JUL      295      350       390       82       430      485       474  
   APR-SEP      360      420       460       82       500      560       562  

Cottage Grove Lake Inflow (1,2)
   FEB-MAY       25       53        66       76        79      107        87  
   APR-JUL      1.5       22        31       76        40       61        41  
   APR-SEP      2.3       23        32       74        41       62        43  

Cougar Lake Inflow (1,2)
   FEB-MAY      140      200       230       81       260      320       285  
   APR-JUL       96      139       158       78       177      220       204  
   APR-SEP      112      155       175       76       195      240       230  

Detroit Lake Inflow (1,2)
   FEB-MAY      405      545       605       81       665      805       744  
   APR-JUL      215      340       395       75       450      575       528  
   APR-SEP      270      400       460       75       520      650       616  

Dorena Lake Inflow (1,2)
   FEB-MAY       90      173       210       82       245      330       255  
   APR-JUL       20       77       103       79       129      186       131  
   APR-SEP     10.0       68        94       77       120      178       122  

Fall Creek Lake Inflow (1,2)
   FEB-MAY       68      125       150       76       175      230       197  
   APR-JUL       20       61        80       76        99      140       106  
   APR-SEP       22       64        83       74       102      144       112  

Fern Ridge Lake Inflow (1,2)
   FEB-MAY       40      112       145       81       178      250       180  
   APR-JUL     -0.8       27        39       80        51       79        49  
   APR-SEP     -0.7       27        40       80        53       81        50  

Foster Lake Inflow (1,2)
   FEB-MAY      550      635       675       77       715      800       878  
   APR-JUL      285      345       370       76       395      455       490  
   APR-SEP      315      375       400       76       425      485       527  

Green Peter Lake Inflow (1,2)
   FEB-MAY      245      375       435       72       495      625       604  
   APR-JUL       95      188       230       70       270      365       327  
   APR-SEP      114      210       250       71       290      385       354  

Hills Creek Reservoir Inflow (1,2)
   FEB-MAY      149      255       300       77       345      450       388  
   APR-JUL      112      183       215       78       245      320       277  
   APR-SEP      135      210       245       77       280      355       320  

Little North Santiam R nr Mehama (1)
   APR-JUL       48       86       103       77       120      158       133  
   APR-SEP       53       91       109       76       127      165       143  

Lookout Point Lake Inflow (1,2)
   FEB-MAY      400      660       780       76       900     1160      1025  
   APR-JUL      270      460       545       75       630      820       726  
   APR-SEP      310      520       615       74       710      920       828  

McKenzie R bl Trail Bridge (2)
   FEB-MAY      185      220       240       82       260      295       294  
   APR-JUL      173      196       210       79       230      250       266  
   APR-SEP      260      290       310       77       330      360       404  

McKenzie R nr Vida (1,2)
   FEB-MAY      720      955      1060       82      1170     1400      1295  
   APR-JUL      565      725       800       82       875     1040       977  
   APR-SEP      720      900       980       82      1060     1240      1201  

Mohawk R nr Springfield
   FEB-JUL       88      131       160       82       189      230       196  

Oak Grove fk above Power Intake
   APR-JUL       82       96       106       82       116      130       130  
   APR-SEP      108      124       135       81       146      162       167  

North Santiam R at Mehama (1,2)
   APR-JUL      335      490       560       77       630      785       732  
   APR-SEP      410      570       640       77       710      870       834  

South Santiam R at Waterloo (2)
   APR-JUL      265      375       450       82       525      635       549  
   APR-SEP      300      405       480       82       555      660       587  

Scoggins Ck nr Gaston (2)
   FEB-JUL       20       30        36       84        42       52        43  

Thomas Ck nr Scio
   FEB-JUL      106      131       149       86       167      192       173  

MF Willamette bl NF (1,2)
   FEB-MAY      295      595       730       75       865     1160       973  
   APR-JUL      196      420       525       75       630      855       698  
   APR-SEP      225      475       590       74       705      955       798  

Willamette R at Salem (1,2)
   FEB-MAY     4000     5830      6660       85      7490     9320      7837  
   APR-JUL     2180     3220      3690       85      4160     5200      4347  
   APR-SEP     2540     3600      4080       85      4560     5620      4804  

================================================================================
   * 90%, 70%, 50%, 30%, and 10% chances of exceeding are the probabilities that
     the actual volume will exceed the volumes in the table.

   The average is computed for the 1971-2000 base period.

   (1) - The values listed under the 10% and 90% Chance of Exceeding are
         actually 5% and 95% exceedance levels.
   (2) - The value is natural volume - actual volume may be affected by upstream
         water management.
================================================================================
                              WILLAMETTE BASIN
                   Reservoir Storage (1000AF) End of January
================================================================================
                                Usable     ********** Usable Storage *********
Reservoir                      Capacity    This Year    Last Year      Average
================================================================================
BLUE RIVER                        85.5          2.3          1.2          6.0   
COTTAGE GROVE                     29.8          4.0          0.8          3.6   
COUGAR                           155.2          5.6         18.6         77.6   
DETROIT                          300.7         33.4         24.9         69.0   
DORENA                            70.5          8.6          2.3         11.8   
FALL CREEK                       115.5          2.0          0.0          7.1   
FERN RIDGE                       109.6          6.0          1.0         18.6   
FOSTER                            29.7          1.5          0.2          4.9   
GREEN PETER                      268.2         30.3         29.3         91.2   
HILLS CREEK                      200.2          9.4         30.1         71.3   
LOOKOUT POINT                    337.0         17.8         39.7         41.8   
TIMOTHY LAKE                                    NO REPORT            
HENRY HAGG LAKE                   53.0         40.6         37.3         36.2   
================================================================================

================================================================================
                              WILLAMETTE BASIN
                   Watershed Snowpack Analysis - February 1, 2010
================================================================================
                                 Number of           This Year as Percent of
Watershed                        Data Sites          Last Year       Average
================================================================================
Clackamas                             6                 53                 47
McKenzie                              8                 46                 43
Row River                             1                 21                 17
Santiam                               6                 37                 29
Middle Fork Willamette                7                 62                 60
================================================================================


	ROGUE AND UMPQUA BASINS as of February 1, 2010

January storms tracking through southern Oregon brought nearly 
normal precipitation to the Rogue and Umpqua basins. Although as 
of February 1, total precipitation for water year 2010 has been 
78 percent of average. On February 1, the snowpack in the Rogue 
and Umpqua basins was 65 percent of average. Snow measurements 
were collected at 21 snow courses and 12 SNOTEL sites.

The February 1 storage at 5 irrigation reservoirs in the Rogue 
and Umpqua basin was 99 percent of average or 61 percent of 
capacity.

The April through September streamflow forecasts for the Rogue 
and Umpqua basin range from 67 percent of average for the Rogue 
at Raygold to 86 percent of average for the North Umpqua at 
Winchester. Elsewhere in the basin, the Applegate Lake Inflow is 
forecast to be 76 percent of average. Streamflow forecasts have 
declined at most points in the basin since last month. Water 
users in the Rogue and Umpqua basins should expect well below 
normal water supplies this coming season. 
    

================================================================================
                              ROGUE AND UMPQUA BASINS
                      Streamflow Forecasts - February 1, 2010
================================================================================
            |  <=== Drier ===  Future  Conditions  === Wetter ===>  |
            |                                                       |
Forecast Pt |  ============== Chance of Exceeding * ==============  |
   Forecast |  90%       70%   |       50%       |  30%       10%   | 30 Yr Avg
   Period   |(1000AF)  (1000AF)|(1000AF) (% AVG.)|(1000AF)  (1000AF)| (1000AF)
================================================================================
Applegate Lake Inflow (2)
   FEB-JUL       57      118       160       78       200      265       205  
   APR-JUL       35       65        85       76       105      135       112  
   FEB-SEP       62      124       166       77       210      270       215  
   APR-SEP       38       69        90       76       111      142       119  

SF Big Butte Ck nr Butte Falls
   APR-JUL     12.6       20        25       74        30       37        34  
   APR-SEP     17.4       26        32       73        38       47        44  

Cow Ck nr Azalea (2)
   FEB-JUL      2.5     18.9        30       71        41       57        42  
   APR-JUL      0.5      7.1      11.6       70      16.1       23      16.5  
   APR-SEP      0.8      7.7      12.4       70      17.1       24      17.7  

Hyatt Prairie Reservoir Inflow (2)
   APR-JUL      0.4      1.6       2.8       58       4.0      5.8       4.8  

Illinois R at Kerby
   APR-JUL       43      107       151       84       195      260       179  
   APR-SEP       47      112       156       84       200      265       186  

NF Little Butte Ck nr Lakecreek (2)
   APR-JUL     17.0       23        27       85        31       37        32  
   APR-SEP       25       33        38       82        43       51        46  

Lost Creek Lake Inflow (2)
   FEB-JUL      455      565       640       78       715      825       825  
   APR-JUL      275      350       400       76       450      525       530  
   FEB-SEP      535      655       740       77       825      945       960  
   APR-SEP      355      440       500       75       560      645       665  

Rogue R at Raygold (2)
   APR-JUL      245      390       490       67       590      735       730  
   APR-SEP      340      495       600       67       705      860       890  

Rogue R at Grants Pass (2)
   APR-JUL      245      410       520       70       630      795       740  
   APR-SEP      320      500       620       70       740      920       885  

Sucker Ck bl Ltl Grayback Ck nr Holland
   APR-JUL       23       35        43       83        51       63        52  
   APR-SEP       26       38        46       82        54       66        56  

North Umpqua R at Winchester
   APR-JUL      430      580       680       86       780      930       795  
   APR-SEP      525      685       790       86       895     1050       920  

South Umpqua R nr Brockway
   APR-JUL      120      240       325       81       410      530       400  
   APR-SEP      130      255       340       81       425      550       420  

South Umpqua R at Tiller
   APR-JUL       72      123       158       82       193      245       193  
   APR-SEP       79      131       166       81       200      255       205  

================================================================================
   * 90%, 70%, 50%, 30%, and 10% chances of exceeding are the probabilities that
     the actual volume will exceed the volumes in the table.

   The average is computed for the 1971-2000 base period.

   (1) - The values listed under the 10% and 90% Chance of Exceeding are
         actually 5% and 95% exceedance levels.
   (2) - The value is natural volume - actual volume may be affected by upstream
         water management.
================================================================================
                              ROGUE AND UMPQUA BASINS
                   Reservoir Storage (1000AF) End of January
================================================================================
                                Usable     ********** Usable Storage *********
Reservoir                      Capacity    This Year    Last Year      Average
================================================================================
APPLEGATE                         75.2          3.5          0.9         12.7   
EMIGRANT LAKE                     39.0         18.2         21.3         21.9   
FISH LAKE                          8.0          5.1          6.4          5.3   
FOURMILE LAKE                     16.1          8.3         11.3          9.0   
HOWARD PRAIRIE                    60.0         40.4         43.9         39.1   
HYATT PRAIRIE                     16.1         12.5         14.3         10.2   
LOST CREEK                       315.0         28.2         25.4        162.0   
================================================================================

================================================================================
                              ROGUE AND UMPQUA BASINS
                   Watershed Snowpack Analysis - February 1, 2010
================================================================================
                                 Number of           This Year as Percent of
Watershed                        Data Sites          Last Year       Average
================================================================================
Applegate                             5                161                 81
Bear Creek                            5                170                 86
Little Butte Creek                    6                 61                 61
Illinois                              4                138                 49
North Umpqua                          9                 42                 42
Rogue River above Grants Pas         21                 90                 71
================================================================================


	KLAMATH BASIN as of February 1, 2010

The Klamath basin posted 82 percent of average precipitation for 
the month of January, the lowest in southern Oregon. As of 
February 1, water year 2010 total precipitation has been only 69 
percent of average, the lowest in the state. On February 1, the 
snowpack in the Klamath basin managed to stay at 77 percent of 
average. Snow measurements were collected at 5 snow courses, 7 
aerial markers and 15 SNOTEL sites. 

The February 1 storage at Upper Klamath Lake and Gerber 
reservoirs was 57 percent of average or 37 percent of capacity. 
Low water levels in Clear Lake reservoir (CA) make current 
measurements unreliable. 

The April through September streamflow forecasts for the Klamath 
basin range from 49 percent of average for Gerber Reservoir 
Inflow to 74 percent of average for the Williamson River below 
Sprague River near Chiloquin as well as for the Sprague River 
near Chiloquin. Elsewhere in the basin, the Upper Klamath Lake 
Inflow forecast for the April through September period is 70 
percent of average. Water users in the Klamath basin should 
expect greatly reduced water supplies this coming season. 
  

================================================================================
                              KLAMATH BASIN
                      Streamflow Forecasts - February 1, 2010
================================================================================
            |  <=== Drier ===  Future  Conditions  === Wetter ===>  |
            |                                                       |
Forecast Pt |  ============== Chance of Exceeding * ==============  |
   Forecast |  90%       70%   |       50%       |  30%       10%   | 30 Yr Avg
   Period   |(1000AF)  (1000AF)|(1000AF) (% AVG.)|(1000AF)  (1000AF)| (1000AF)
================================================================================
Clear Lake Inflow (2)
   FEB-JUL      7.0       45        70       67        95      133       105  
   APR-SEP      5.8       20        30       63        40       54        48  

Gerber Reservoir Inflow (2)
   FEB-JUL      2.4     12.8        24       51        35       52        47  
   APR-SEP      0.7      2.5       8.8       49      15.1       24      17.8  

Sprague R nr Chiloquin
   FEB-JUL      111      185       235       72       285      360       325  
   FEB-SEP      130      205       260       74       315      390       350  
   APR-SEP       85      136       170       74       205      255       230  

Upper Klamath Lake Inflow
   FEB-JUL      265      460       550       71       640      835       780  
   FEB-SEP      300      515       610       70       705      920       875  
   APR-SEP      186      305       360       70       415      535       515  

Williamson R bl Sprague R nr Chiloquin
   FEB-JUL      225      320       380       73       440      535       520  
   FEB-SEP      270      365       430       74       495      590       580  
   APR-SEP      181      245       285       74       325      390       385  

================================================================================
   * 90%, 70%, 50%, 30%, and 10% chances of exceeding are the probabilities that
     the actual volume will exceed the volumes in the table.

   The average is computed for the 1971-2000 base period.

   (1) - The values listed under the 10% and 90% Chance of Exceeding are
         actually 5% and 95% exceedance levels.
   (2) - The value is natural volume - actual volume may be affected by upstream
         water management.
================================================================================
                              KLAMATH BASIN
                   Reservoir Storage (1000AF) End of January
================================================================================
                                Usable     ********** Usable Storage *********
Reservoir                      Capacity    This Year    Last Year      Average
================================================================================
CLEAR LAKE (CALIF)                              NO REPORT            
GERBER                            94.3         24.6         44.5         46.9   
UPPER KLAMATH LAKE               523.7        204.2        281.0        354.6   
================================================================================

================================================================================
                              KLAMATH BASIN
                   Watershed Snowpack Analysis - February 1, 2010
================================================================================
                                 Number of           This Year as Percent of
Watershed                        Data Sites          Last Year       Average
================================================================================
Lost                                  3                104                 87
Sprague                               8                110                 89
Upper Klamath Lake                    7                 84                 71
Williamson River                      5                 94                 79
================================================================================


	LAKE COUNTY AND GOOSE LAKE BASINS as of February 1, 2010

The Lake County and Goose Lake basins continued to post below 
normal precipitation for the water year. January precipitation in 
Lake County and Goose Lake basins was 88 percent of average. 
Since the beginning of the water year, total precipitation in the 
basin has been 76 percent of average. On February 1, the snowpack 
in the Lake County and Goose Lake basins was 95 percent of 
average. Snow measurements were collected at 2 snow courses, 14 
aerial markers and 8 SNOTEL sites. 

The February 1 storage at Cottonwood and Drews reservoirs was 15 
percent of average or 8 percent of capacity.

Summer streamflow forecasts have declined at most points in the 
basin since the last report. The April through September 
forecasts range from 63 percent of average for Silver Creek near 
Silver Lake to 76 percent of average for the Chewaucan River near 
Paisley. Water users in the Lake County and Goose Lake basins 
should expect greatly reduced water supplies during the summer of 
2010. 


================================================================================
                              LAKE COUNTY AND GOOSE LAKE BASINS
                      Streamflow Forecasts - February 1, 2010
================================================================================
            |  <=== Drier ===  Future  Conditions  === Wetter ===>  |
            |                                                       |
Forecast Pt |  ============== Chance of Exceeding * ==============  |
   Forecast |  90%       70%   |       50%       |  30%       10%   | 30 Yr Avg
   Period   |(1000AF)  (1000AF)|(1000AF) (% AVG.)|(1000AF)  (1000AF)| (1000AF)
================================================================================
Chewaucan R nr Paisley
   MAR-JUL       38       56        68       76        80       98        89  
   APR-SEP       33       48        59       76        70       85        78  

Deep Ck ab Adel
   MAR-JUL       25       44        57       68        70       89        84  
   APR-SEP     19.5       35        46       67        57       73        69  

Honey Ck nr Plush
   MAR-JUL      1.0      8.1      13.0       65      17.9       25        20  
   APR-SEP      0.7      6.8      11.0       66      15.2       21      16.6  

Silver Ck nr Silver Lake (2)
   MAR-JUL      0.7      5.6       9.0       62      12.4     17.3      14.6  
   APR-SEP      0.9      3.4       7.0       63      10.6     15.9      11.2  

Twentymile Ck nr Adel
   MAR-JUL      2.5     10.8        20       71        29       43        28  
   APR-SEP      0.3      6.2      13.0       75      19.8       30      17.4  

================================================================================
   * 90%, 70%, 50%, 30%, and 10% chances of exceeding are the probabilities that
     the actual volume will exceed the volumes in the table.

   The average is computed for the 1971-2000 base period.

   (1) - The values listed under the 10% and 90% Chance of Exceeding are
         actually 5% and 95% exceedance levels.
   (2) - The value is natural volume - actual volume may be affected by upstream
         water management.
================================================================================
                              LAKE COUNTY AND GOOSE LAKE BASINS
                   Reservoir Storage (1000AF) End of January
================================================================================
                                Usable     ********** Usable Storage *********
Reservoir                      Capacity    This Year    Last Year      Average
================================================================================
COTTONWOOD                         8.7          3.6          6.3          3.1   
DREWS                             63.0          1.9          5.0         33.1   
================================================================================

================================================================================
                              LAKE COUNTY AND GOOSE LAKE BASINS
                   Watershed Snowpack Analysis - February 1, 2010
================================================================================
                                 Number of           This Year as Percent of
Watershed                        Data Sites          Last Year       Average
================================================================================
Chewaucan River                       6                114                 81
Deep Creek                            3                 78                 75
Drew Creek                            4                113                 81
Honey Creek                           2                 92                 89
Silver Creek (Lake Co.)               5                111                 95
Twentymile Creek                      5                 90                 94
================================================================================


	HARNEY BASIN as of February 1, 2010

The Harney basin picked up the most precipitation of all the 
Oregon basins in January with 118 percent of average. As of 
February 1, total precipitation since the beginning of the water 
year 2010 has been 91 percent of average, also the best in the 
state. On February 1, the snowpack in the Harney basin was 91 
percent of average, huge improvement since last month. Snow 
measurements were taken at 8 aerial markers and 9 SNOTEL sites. 

Despite a good January for precipitation and snow, summer 
streamflow forecasts remain low in the Harney basin. The April 
through September streamflow forecast for the Donner Und Blitzen 
River near Frenchglen is expected to be 76 percent of average. 
The Silvies River near Burns is expected to 63 percent of average 
for the same period. The April through September forecast for 
Trout Creek near Denio is 66 percent of average. Water users in 
the Harney basin should expect greatly reduced water supplies 
during the summer of 2010. 

================================================================================
                              HARNEY BASIN
                      Streamflow Forecasts - February 1, 2010
================================================================================
            |  <=== Drier ===  Future  Conditions  === Wetter ===>  |
            |                                                       |
Forecast Pt |  ============== Chance of Exceeding * ==============  |
   Forecast |  90%       70%   |       50%       |  30%       10%   | 30 Yr Avg
   Period   |(1000AF)  (1000AF)|(1000AF) (% AVG.)|(1000AF)  (1000AF)| (1000AF)
================================================================================
Donner Und Blitzen R nr Frenchglen
   MAR-JUL       26       45        57       76        69       88        75  
   APR-SEP       22       41        53       76        65       84        70  

Silvies R nr Burns
   MAR-JUL      5.0       50        80       62       110      155       129  
   APR-SEP      7.1       40        62       63        84      117        99  

Trout Ck nr Denio
   MAR-JUL      2.1      5.3       7.5       68       9.7     12.9      11.1  
   APR-SEP      1.3      4.6       6.8       66       9.0     12.3      10.3  

================================================================================
   * 90%, 70%, 50%, 30%, and 10% chances of exceeding are the probabilities that
     the actual volume will exceed the volumes in the table.

   The average is computed for the 1971-2000 base period.

   (1) - The values listed under the 10% and 90% Chance of Exceeding are
         actually 5% and 95% exceedance levels.
   (2) - The value is natural volume - actual volume may be affected by upstream
         water management.
================================================================================
                              HARNEY BASIN
                   Watershed Snowpack Analysis - February 1, 2010
================================================================================
                                 Number of           This Year as Percent of
Watershed                        Data Sites          Last Year       Average
================================================================================
Donner und Blitzen River              5                136                101
Silver Creek (Harney Co.)             2                 96                 78
Silvies River                         6                127                 88
Trout Creek                           6                117                 92
================================================================================

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