USDA NRCS National Water & Climate Center - DATA CURRENT AS OF: June 03, 2022 05:54:10 PM - Based on June 01, 2022 forecast values Jolyne Lea, Hydrologist June 1, 2022 LAKE TAHOE BASIN 50% % of max 30% 70% min 30-yr Forecast Point period (KAF) med (KAF) (KAF) (KAF) (KAF) med -------------- ------ ----- ---- ----- ----- ----- ----- ----- Marlette Lake Inflow APR-JUL 0.40 100 0.95 0.62 0.180 -0.15 0.40 JUN-JUL 0.050 -31 0.51 0.24 -0.14 -0.41 -0.16 Lake Tahoe Rise*(Gates Closed) (1) (ft) APR-HIGH 0.70 59 1.10 0.90 0.67 0.65 1.19 MAY-HIGH 0.30 39 0.91 0.49 0.110 0.015 0.76 Lk Tahoe Net Inflow APR-JUL 105 104 140 119 91 70 101 JUN-JUL 28 -230 64 43 13.4 -8.0 -12.2 TRUCKEE RIVER BASIN 50% % of max 30% 70% min 30-yr Forecast Point period (KAF) med (KAF) (KAF) (KAF) (KAF) med -------------- ------ ----- ---- ----- ----- ----- ----- ----- Donner Lake Inflow (2) APR-JUL 12.0 80 15.5 13.4 10.6 8.5 15.0 JUN-JUL 1.70 95 4.1 2.7 0.72 0.107 1.79 Martis Ck Res Inflow (2) APR-JUL 5.3 93 7.7 6.3 4.3 2.9 5.7 JUN-JUL 0.90 101 2.2 1.58 0.23 0.053 0.89 Prosser Ck Res Inflow (2) APR-JUL 29 83 37 32 26 21 35 JUN-JUL 8.8 104 14.5 11.1 6.5 3.1 8.5 Independence Lk Inflow (2) APR-JUL 8.4 80 10.7 9.3 7.5 6.1 10.5 JUN-JUL 3.1 97 5.0 3.9 2.3 1.20 3.2 Sagehen Ck nr Truckee APR-JUL 3.3 80 4.9 3.9 2.7 1.72 4.1 JUN-JUL 0.80 125 1.81 1.21 0.39 0.050 0.64 Stampede Res Local Inflow (2) APR-JUL 49 83 65 55 43 33 59 JUN-JUL 12.0 106 25 17.1 6.9 0.57 11.3 L Truckee R ab Boca Reservoir*(2) APR-JUL 55 76 74 63 50 48 72 JUN-JUL 11.0 76 26 16.9 5.1 0.72 14.4 Boca Res Local Inflow (2) APR-JUL 1.63 107 5.0 3.0 0.27 0.030 1.52 JUN-JUL 0.100 333 0.140 0.116 0.043 0.005 0.030 Truckee R ab Farad Sidewater (2) APR-JUL 86 96 106 94 77 65 90 JUN-JUL 24 100 38 29 18.0 9.7 24 Truckee R at Farad*(2) APR-JUL 184 82 225 200 168 150 225 JUN-JUL 43 91 76 56 30 9.9 47 Galena Ck at Galena Ck State Pk APR-JUL 3.0 75 4.4 3.6 2.5 1.66 4.0 JUN-JUL 1.50 78 2.2 1.80 1.20 0.75 1.93 Steamboat Ck at Steamboat APR-JUL 1.44 69 4.1 2.3 0.76 0.150 2.1 JUN-JUL 0.70 82 1.66 1.04 0.43 0.150 0.85 Pyramid Lk Elevation Change (1) (ft) LOW-HIGH 0.80 62 2.1 1.21 0.39 -0.51 1.30 CARSON RIVER BASIN 50% % of max 30% 70% min 30-yr Forecast Point period (KAF) med (KAF) (KAF) (KAF) (KAF) med -------------- ------ ----- ---- ----- ----- ----- ----- ----- EF Carson R nr Gardnerville APR-JUL 112 68 139 123 101 85 164 JUN-JUL 30 61 56 40 19.5 4.1 49 Date of 200 cfs flow (julian_day) 200 cfs Jul 01 Jul 13 Jul 06 Jun 26 Jun 19 Jul 14 Date of 500 cfs flow (julian_day) 500 cfs Jun 09 Jun 23 Jun 15 Jun 03 May 26 Jun 20 WF Carson R nr Woodfords APR-JUL 30 67 38 33 27 22 45 JUN-JUL 8.0 78 17.6 11.9 4.1 0.62 10.3 Carson R nr Carson City APR-JUL 80 60 113 93 67 47 133 JUN-JUL 24 83 54 36 12.0 1.16 29 Marlette Lake Inflow APR-JUL 0.40 100 0.95 0.62 0.180 -0.15 0.40 JUN-JUL 0.050 -31 0.51 0.24 -0.14 -0.41 -0.16 Kings Canyon Ck nr Carson City APR-JUL 0.110 85 0.23 0.150 0.070 0.030 0.130 JUN-JUL 0.050 83 0.120 0.080 0.030 0.010 0.060 Ash Canyon Ck nr Carson City APR-JUL 0.53 65 0.80 0.63 0.44 0.32 0.82 JUN-JUL 0.21 62 0.34 0.26 0.170 0.110 0.34 Carson R at Ft Churchill* APR-JUL 62 47 98 77 55 51 131 JUN-JUL 15.0 56 44 27 3.1 0.81 27 JUN 12.0 47 32 22 5.4 1.53 26 WALKER RIVER BASIN 50% % of max 30% 70% min 30-yr Forecast Point period (KAF) med (KAF) (KAF) (KAF) (KAF) med -------------- ------ ----- ---- ----- ----- ----- ----- ----- E Walker R nr Bridgeport (2) APR-AUG 16.0 36 37 25 7.4 3.1 44 JUN-AUG 9.0 31 20 13.5 4.5 1.74 29 W Walker R bl L Walker nr Coleville APR-JUL 82 54 114 95 69 50 153 JUN-JUL 27 42 50 36 17.7 4.1 64 W Walker R nr Coleville APR-JUL 84 57 111 95 73 57 147 JUN-JUL 29 43 58 41 17.3 2.0 68 Walker Lake Elevation Change (1) (ft) LOW-HIGH 0.030 21 0.54 0.31 -0.18 -0.30 0.140 NORTHERN GREAT BASIN 50% % of max 30% 70% min 30-yr Forecast Point period (KAF) med (KAF) (KAF) (KAF) (KAF) med -------------- ------ ----- ---- ----- ----- ----- ----- ----- McDermitt Ck nr McDermitt APR-JUL 7.5 103 11.9 9.2 6.0 4.1 7.3 JUN-JUL 1.60 92 2.9 2.1 1.19 0.69 1.74 UPPER HUMBOLDT RIVER BASIN 50% % of max 30% 70% min 30-yr Forecast Point period (KAF) med (KAF) (KAF) (KAF) (KAF) med -------------- ------ ----- ---- ----- ----- ----- ----- ----- Marys R nr Deeth APR-JUL 10.7 41 18.5 13.9 7.5 2.9 26 JUN-JUL 3.4 52 9.8 6.0 0.84 0.198 6.6 Lamoille Ck nr Lamoille APR-JUL 18.0 69 27 22 14.4 9.1 26 JUN-JUL 9.7 63 16.1 12.3 7.1 3.3 15.5 NF Humboldt R at Devils Gate APR-JUL 4.7 26 17.8 10.0 2.3 0.72 18.0 JUN-JUL 1.80 40 7.9 4.3 0.81 0.090 4.5 Humboldt R nr Elko APR-JUL 12.0 17 67 34 7.6 1.38 69 JUN-JUL 7.2 19 37 19.3 3.8 0.76 38 SF Humboldt R ab Dixie Ck APR-JUL 22 43 42 30 14.1 2.1 51 JUN-JUL 14.3 51 31 21 7.6 1.40 28 SF Humboldt R abv Tenmile Ck nr Elko APR-JUL 25 48 40 31 18.4 9.2 52 JUN-JUL 15.1 53 33 22 8.1 1.71 28 Humboldt R nr Carlin APR-JUL 30 30 68 43 19.1 7.5 100 JUN-JUL 20 35 42 28 13.9 6.5 57 Humboldt R at Palisade APR-JUL 33 30 75 48 21 7.9 109 JUN-JUL 20 34 41 28 13.7 6.6 58 LOWER HUMBOLDT RIVER BASIN 50% % of max 30% 70% min 30-yr Forecast Point period (KAF) med (KAF) (KAF) (KAF) (KAF) med -------------- ------ ----- ---- ----- ----- ----- ----- ----- Rock Ck nr Battle Mountain APR-JUL 1.13 19 7.9 3.1 0.130 0.000 6.1 JUN-JUL 0.30 56 1.55 0.69 0.070 0.011 0.54 Humboldt R at Comus APR-JUL 20 25 63 35 9.9 1.28 79 JUN-JUL 14.0 34 35 21 8.3 2.5 41 L Humboldt R nr Paradise Valley (2) APR-JUL 4.3 74 8.1 5.8 2.8 0.50 5.8 JUN-JUL 0.010 50 0.040 0.030 0.000 0.000 0.020 Martin Ck nr Paradise Valley APR-JUL 9.8 91 13.8 11.4 8.2 5.8 10.8 JUN-JUL 2.2 92 4.9 3.3 1.11 0.140 2.4 Humboldt R nr Imlay APR-JUL 7.7 15 46 19.4 3.6 0.52 52 JUN-JUL 6.7 32 25 12.6 2.7 0.21 21 EASTERN NEVADA 50% % of max 30% 70% min 30-yr Forecast Point period (KAF) med (KAF) (KAF) (KAF) (KAF) med -------------- ------ ----- ---- ----- ----- ----- ----- ----- Kingston Ck nr Austin APR-JUL 1.05 59 1.82 1.33 0.80 0.49 1.78 JUN-JUL 0.70 70 1.35 0.94 0.50 0.26 1.00 Lehman Ck nr Baker APR-JUL 1.10 55 2.4 1.64 0.56 0.080 1.99 JUN-JUL 0.84 56 1.74 1.21 0.48 0.091 1.51 Cleve Ck nr Ely APR-JUL 1.40 52 2.5 1.79 1.06 0.64 2.7 JUN-JUL 0.80 70 1.33 1.00 0.63 0.41 1.14 Steptoe Ck nr Ely APR-JUL 0.78 57 1.41 1.01 0.58 0.34 1.36 JUN-JUL 0.51 70 0.83 0.63 0.40 0.27 0.73 Snake 50% % of max 30% 70% min 30-yr Forecast Point period (KAF) med (KAF) (KAF) (KAF) (KAF) med -------------- ------ ----- ---- ----- ----- ----- ----- ----- Jarbidge River Below Jarbidge JUN-JUL 6.6 74 10.6 8.2 5.0 2.6 8.9 JUN-SEP 7.0 74 11.1 8.7 5.3 2.9 9.5 Bruneau R at Rowland JUN-JUL 7.8 76 15.1 10.8 4.8 0.48 10.3 JUN-SEP 8.6 75 16.3 11.7 5.5 0.94 11.5 Salmon Falls Ck nr San Jacinto JUN-JUL 11.7 79 19.4 14.6 9.1 5.9 14.9 JUN-SEP 14.0 79 22 17.0 11.3 7.9 17.8 COLORADO BASIN 50% % of max 30% 70% min 30-yr Forecast Point period (KAF) med (KAF) (KAF) (KAF) (KAF) med -------------- ------ ----- ---- ----- ----- ----- ----- ----- Lake Powell Inflow (2) APR-JUL 3790 62 4430 4040 3560 3250 6130 JUN-JUL 1810 54 2450 2060 1580 1270 3370 Max (10%), 30%, 50%, 70% and Min (90%) chance that actual volume will exceed forecast. Medians are for the 1991-2020 period. All volumes are in thousands of acre-feet. footnotes: 1) Max and Min are 5% and 95% chance that actual volume will exceed forecast 2) streamflow is adjusted for upstream storage *) These forecasts are coordinated. Hydrologists with the NRCS and National Weather Service California Nevada River Forecast Center (CNRFC) coordinate Lake Tahoe Rise, Truckee River at Farad, Little Truckee River above Boca, and the Carson River near Ft. Churchill using output of their respective hydrology models at the request of the Bureau of Reclamation. The NRCS model is a statistical model based on the current data as of the first of each month. The CNRFC ensemble forecasting system incorporates near-term weather prediction and climatology into their model. These models can provide different answers because of the nature of the model systems, and from the inclusion of future weather in the CNRFC model. The hydrologists agree on forecast values using guidance from both models to best provide an accurate water supply forecast for these points.