United States Natural Resources Water and Climate Center Department of Conservation Portland, Oregon Agriculture Service S N O W - P R E C I P I T A T I O N U P D A T E Based on Mountain Data from NRCS SNOTEL Sites As of SUNDAY: APRIL 21 , 2019 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ UPPER COLORADO RIVER BASIN UPPER GREEN RIVER BASIN Big Sandy Opening 9080 13.6 12.6 108 15.6 14.2 110 Blacks Fork Jct 8869 8.6 -M * 14.6 -M * Blind Bull Sum 8650 25.8 24.1 107 20.7 20.3 102 Buck Pasture 9632 16.6 -M * 21.7 -M * East Rim Divide 7930 8.3 9.4 88 13.0 12.3 106 EF Blacks Fork GS 9360 11.9 -M * 13.3 -M * Elkhart Park G.S. 9400 13.6 11.9 114 14.9 14.1 106 Gros Ventre Summit 8750 9.4 13.2 71 13.4 13.8 97 Gunsight Pass 9820 14.4 13.7 105 16.9 15.0 113 Hams Fork 7840 7.0 6.4 109 12.2 12.1 101 Hewinta 9500 11.8 7.9 149 16.8 15.0 112 Hickerson Park 9122 8.8 5.3 166 13.1 11.1 118 Hole-in-Rock 9168 6.0 5.7 105 12.2 10.6 115 Indian Creek 9425 24.3 23.4 104 19.8 23.7 84 Kelley R.S. 8180 14.8 12.4 119 17.4 19.0 92 Kendall R.S. 7740 8.6 8.1 106 12.5 14.8 84 Kings Cabin 8728 10.2 6.9 148 17.7 14.4 123 Loomis Park 8240 14.8 12.8 116 18.3 18.0 102 New Fork Lake 8340 9.0 8.6 105 10.5 11.3 93 Pocket Creek 9360 15.4 -M * 16.3 -M * Snider Basin 8060 8.6 10.6 81 14.3 14.8 97 Spirit Lk 10235 17.0 -M * 18.9 -M * Spring Creek Divide 9000 24.7 23.5 105 25.5 24.9 102 Steel Creek Park 10158 16.4 16.2 101 21.0 17.8 118 Triple Peak 8500 24.0 19.2 125 27.6 26.5 104 Trout Creek 9518 11.6 8.2 141 16.8 14.7 114 ----- ----- Basin Index (%) 110 103 DUCHESNE RIVER BASIN Brown Duck 10574 24.7 19.2 129 26.7 21.3 125 Chepeta 10499 16.1 13.1 123 21.0 16.8 125 Currant Creek 7915 -M 1.2 * 21.6 15.4 140 Daniels-Strawberry 8008 19.0 7.9 241 27.5 21.5 128 Five Points Lake 10943 27.4 17.1 160 25.8 20.2 128 Indian Canyon 9171 13.5 7.2 188 20.7 15.7 132 Kings Cabin 8728 10.2 6.9 148 17.7 14.4 123 Lakefork #1 10128 16.6 11.0 151 22.4 14.6 153 Lakefork #3 8464 6.4 -M * 17.8 -M * Lakefork Basin 10885 28.9 22.1 131 30.1 22.1 136 Mosby Mtn. 9553 15.8 10.8 146 20.5 15.8 130 Rock Creek 7886 8.0 2.8 286 17.2 12.8 134 Strawberry Divide 8123 21.3 10.4 205 28.1 21.9 128 Trial Lake 9992 34.9 21.4 163 34.3 25.4 135 White River #1 8641 13.7 6.5 211 20.7 15.7 132 ----- ----- Basin Index (%) 160 132 YAMPA/WHITE RIVER BASINS Battle Mountain 7440 6.1 3.9 156 17.1 16.1 106 Bear River 9080 12.5 11.0 114 15.5 15.2 102 Bison Lake 10880 31.8 26.0 122 37.1 28.7 129 Buffalo Park 9240 15.8 12.2 130 16.2 18.4 88 Burro Mountain 9400 14.6 15.6 94 24.5 22.8 107 Columbine 9160 24.7 20.6 120 30.1 27.0 111 Crosho 9100 9.3 7.2 129 17.2 16.9 102 Divide Peak 8880 20.2 18.6 109 24.8 22.9 108 Dry Lake 8400 19.8 17.5 113 26.2 26.8 98 Elk River 8700 16.1 15.2 106 20.7 21.4 97 Little Snake River 8915 27.2 24.1 113 39.3 31.2 126 Lost Dog 9320 23.2 23.9 97 28.5 25.7 111 Lynx Pass 8880 6.5 8.3 78 15.3 14.1 109 Old Battle 10000 38.2 32.9 116 38.6 37.2 104 Rabbit Ears 9400 24.2 25.2 96 32.4 32.4 100 Ripple Creek 10340 33.2 24.4 136 30.5 28.2 108 Sage Creek Basin 7850 14.7 5.4 272 17.0 15.3 111 Sandstone RS 8150 11.1 10.0 111 19.2 19.6 98 Tower 10500 51.0 48.2 106 48.9 42.3 116 Trapper Lake 9700 6.0 -M * 16.7 -M * Whiskey Park 8950 30.5 25.8 118 34.0 29.7 114 ----- ----- Basin Index (%) 115 108 PRICE-SAN RAFAEL Buck Flat 9409 22.1 13.1 169 27.8 20.8 134 Clear Creek #1 8975 22.5 15.9 142 31.7 21.7 146 Corral 8207 5.3 -M * 18.4 -M * Huntington Horse 9652 28.5 -M * 30.0 -M * Mammoth-Cottonwood 8709 26.9 14.4 187 26.2 17.9 146 Red Pine Ridge 8988 21.4 11.7 183 28.0 21.2 132 Seeley Creek 9904 21.0 13.4 157 20.0 15.7 127 Timberline 8736 10.4 -M * 21.9 -M * Upper Joes Valley 8596 10.0 -M * 20.9 -M * White River #1 8641 13.7 6.5 211 20.7 15.7 132 Wrigley Creek 9327 14.0 -M * 23.2 -M * ----- ----- Basin Index (%) 170 137 ESCALANTE RIVER BASINS Clayton Springs 10049 15.1 9.6 157 21.1 17.6 120 Donkey Reservoir 9799 6.1 5.6 109 13.1 11.0 119 Sunflower Flat 10018 21.0 -M * 22.0 -M * Widtsoe #3 9640 12.9 9.3 139 20.1 15.9 126 ----- ----- Basin Index (%) 139 122 DIRTY DEVIL RIVER BASIN Black Flat-U.M. Ck 9414 10.5 6.5 162 16.9 13.0 130 Dills Camp 9228 11.8 8.6 137 26.1 18.8 139 Donkey Reservoir 9799 6.1 5.6 109 13.1 11.0 119 Fish Lake Utah 8798 11.7 -M * 13.4 -M * Lonesome Beaver 9410 9.6 -M * 20.8 -M * Sunflower Flat 10018 21.0 -M * 22.0 -M * ----- ----- Basin Index (%) 137 131 UPPER COLORADO RIVER HEADWATERS Arapaho Ridge 10960 26.6 21.3 125 27.2 24.4 111 Beaver Ck Village 8500 11.2 6.3 178 18.8 16.0 118 Berthoud Summit 11300 22.0 21.2 104 27.4 25.2 109 Bison Lake 10880 31.8 26.0 122 37.1 28.7 129 Buffalo Park 9240 15.8 12.2 130 16.2 18.4 88 Columbine 9160 24.7 20.6 120 30.1 27.0 111 Copper Mountain 10550 20.2 15.2 133 20.1 17.8 113 Elliot Ridge 10520 22.8 -M * 23.6 -M * Fool Creek 11150 22.3 -M * 22.8 -M * Fremont Pass 11400 23.9 17.5 137 22.3 16.6 134 Grizzly Peak 11100 22.7 16.6 137 21.2 19.1 111 High Lonesome 10620 21.2 -M * 23.6 -M * Hoosier Pass 11400 20.1 15.8 127 21.4 16.8 127 Lake Irene 10700 25.8 24.1 107 25.3 22.5 112 Lynx Pass 8880 6.5 8.3 78 15.3 14.1 109 Phantom Valley 9030 6.9 6.6 105 15.5 15.2 102 Stillwater Creek 8720 3.0 .9 333 14.0 11.1 126 Summit Ranch 9400 10.1 9.9 102 15.4 14.7 105 Vail Mountain 10300 19.4 22.0 88 22.2 24.5 91 Willow Creek Pass 9540 16.9 13.3 127 18.4 14.5 127 ----- ----- Basin Index (%) 119 113 ROARING FORK RIVER BASIN Chapman Tunnel 10110 13.1 -M * 22.9 -M * Independence Pass 10600 20.5 15.7 131 22.1 19.7 112 Ivanhoe 10400 24.3 14.3 170 27.5 22.9 120 Kiln 9600 14.4 9.6 150 19.2 15.8 122 Mc Clure Pass 9500 16.0 13.1 122 27.3 22.4 122 Nast Lake 8700 5.6 1.1 509 16.4 13.2 124 North Lost Trail 9200 16.5 11.2 147 25.0 23.6 106 Schofield Pass 10700 47.1 32.6 144 40.5 34.5 117 ----- ----- Basin Index (%) 148 117 SOUTH EASTERN UTAH Buckboard Flat 8924 16.2 -M * 28.2 -M * Camp Jackson 8858 19.3 5.3 364 30.7 18.6 165 East Willow Creek 8302 8.3 1.9 437 17.3 12.3 141 Lasal Mountain 9578 19.8 8.9 222 32.2 21.5 150 Lasal Mountain-Lower 8783 10.9 -M * 22.8 -M * Lonesome Beaver 9410 9.6 -M * 20.8 -M * ----- ----- Basin Index (%) 294 153 GUNNISON RIVER BASIN Butte 10160 16.6 12.4 134 19.2 17.2 112 Cochetopa Pass 10020 3.3 .3 1100* 10.0 8.3 120 Columbine Pass 9400 20.9 10.6 197 31.0 24.9 124 Idarado 9800 17.8 11.0 162 24.2 20.4 119 Mc Clure Pass 9500 16.0 13.1 122 27.3 22.4 122 Mesa Lakes 10000 24.1 17.7 136 31.7 23.0 138 Overland Res. 9840 16.1 9.6 168 22.5 17.9 126 Park Cone 9600 13.0 8.5 153 15.3 13.0 118 Park Reservoir 9960 34.9 26.4 132 40.2 29.4 137 Porphyry Creek 10760 19.5 14.5 134 19.2 16.9 114 Red Mountain Pass 11200 34.6 24.3 142 34.3 28.3 121 Sargents Mesa 11530 13.1 -M * 17.2 -M * Schofield Pass 10700 47.1 32.6 144 40.5 34.5 117 Slumgullion 11560 19.1 14.5 132 21.1 14.8 143 Upper Taylor 10640 17.9 -M * 25.0 -M * Wager Gulch 11100 16.7 -M * 20.1 -M * ----- ----- Basin Index (%) 145 124 DOLORES/SAN MIGUEL RIVER BASINS Black Mesa 11580 33.8 -M * 35.9 -M * El Diente Peak 10000 20.9 11.4 183 27.8 21.3 131 Lizard Head Pass 10200 21.7 14.6 149 18.5 17.6 105 Lone Cone 9600 17.8 9.3 191 26.8 21.5 125 Mancos 10000 23.0 9.7 237 20.8 18.7 111 Mineral Creek 10040 22.8 14.0 163 24.3 19.1 127 Red Mountain Pass 11200 34.6 24.3 142 34.3 28.3 121 Scotch Creek 9100 12.2 2.4 508 24.5 19.0 129 Sharkstooth 10720 27.8 19.4 143 32.4 -M * ----- ----- Basin Index (%) 172 122 SAN JUAN RIVER HEADWATERS Beartown 11600 37.1 22.9 162 33.0 26.2 126 Chamita 8400 5.9 2.5 236 16.8 14.7 114 Lily Pond 11000 19.3 14.7 131 25.2 21.6 117 Middle Creek 11250 23.4 19.1 123 27.1 25.4 107 Stump Lakes 11200 30.0 17.9 168 27.5 21.8 126 Upper San Juan 10200 36.8 30.8 119 44.3 36.5 121 Vallecito 10880 22.0 13.0 169 24.9 20.1 124 Weminuche Creek 10740 27.6 -M * 34.5 -M * Wolf Creek Summit 11000 41.3 34.7 119 41.7 34.9 119 ----- ----- Basin Index (%) 139 120 ANIMAS RIVER BASIN Beartown 11600 37.1 22.9 162 33.0 26.2 126 Cascade 8880 13.9 1.6 869 26.6 21.6 123 Cascade #2 8920 5.0 .0 * 25.8 20.7 125 Columbus Basin 10785 43.6 26.1 167 44.6 29.8 150 Mineral Creek 10040 22.8 14.0 163 24.3 19.1 127 Molas Lake 10500 27.5 20.1 137 28.8 21.5 134 Red Mountain Pass 11200 34.6 24.3 142 34.3 28.3 121 Spud Mountain 10660 34.2 21.3 161 41.0 31.7 129 Stump Lakes 11200 30.0 17.9 168 27.5 21.8 126 ----- ----- Basin Index (%) 168 130 COLORADO RIVER BASIN ABOVE LAKE POWELL (TOTAL OF ALL SNOTEL SITES) Beartown 11600 37.1 22.9 162 33.0 26.2 126 Black Mesa 11580 33.8 -M * 35.9 -M * Slumgullion 11560 19.1 14.5 132 21.1 14.8 143 Sargents Mesa 11530 13.1 -M * 17.2 -M * Hoosier Pass 11400 20.1 15.8 127 21.4 16.8 127 Fremont Pass 11400 23.9 17.5 137 22.3 16.6 134 Berthoud Summit 11300 22.0 21.2 104 27.4 25.2 109 Middle Creek 11250 23.4 19.1 123 27.1 25.4 107 Stump Lakes 11200 30.0 17.9 168 27.5 21.8 126 Red Mountain Pass 11200 34.6 24.3 142 34.3 28.3 121 Fool Creek 11150 22.3 -M * 22.8 -M * Wager Gulch 11100 16.7 -M * 20.1 -M * Grizzly Peak 11100 22.7 16.6 137 21.2 19.1 111 Wolf Creek Summit 11000 41.3 34.7 119 41.7 34.9 119 Lily Pond 11000 19.3 14.7 131 25.2 21.6 117 Arapaho Ridge 10960 26.6 21.3 125 27.2 24.4 111 Five Points Lake 10943 27.4 17.1 160 25.8 20.2 128 Lakefork Basin 10885 28.9 22.1 131 30.1 22.1 136 Vallecito 10880 22.0 13.0 169 24.9 20.1 124 Bison Lake 10880 31.8 26.0 122 37.1 28.7 129 Columbus Basin 10785 43.6 26.1 167 44.6 29.8 150 Porphyry Creek 10760 19.5 14.5 134 19.2 16.9 114 Weminuche Creek 10740 27.6 -M * 34.5 -M * Schofield Pass 10700 47.1 32.6 144 40.5 34.5 117 Lake Irene 10700 25.8 24.1 107 25.3 22.5 112 Spud Mountain 10660 34.2 21.3 161 41.0 31.7 129 Upper Taylor 10640 17.9 -M * 25.0 -M * High Lonesome 10620 21.2 -M * 23.6 -M * Independence Pass 10600 20.5 15.7 131 22.1 19.7 112 Brown Duck 10574 24.7 19.2 129 26.7 21.3 125 Copper Mountain 10550 20.2 15.2 133 20.1 17.8 113 Elliot Ridge 10520 22.8 -M * 23.6 -M * Tower 10500 51.0 48.2 106 48.9 42.3 116 Molas Lake 10500 27.5 20.1 137 28.8 21.5 134 Chepeta 10499 16.1 13.1 123 21.0 16.8 125 Ivanhoe 10400 24.3 14.3 170 27.5 22.9 120 Ripple Creek 10340 33.2 24.4 136 30.5 28.2 108 Vail Mountain 10300 19.4 22.0 88 22.2 24.5 91 Spirit Lk 10235 17.0 -M * 18.9 -M * Upper San Juan 10200 36.8 30.8 119 44.3 36.5 121 Lizard Head Pass 10200 21.7 14.6 149 18.5 17.6 105 Butte 10160 16.6 12.4 134 19.2 17.2 112 Steel Creek Park 10158 16.4 16.2 101 21.0 17.8 118 Lakefork #1 10128 16.6 11.0 151 22.4 14.6 153 Chapman Tunnel 10110 13.1 -M * 22.9 -M * Clayton Springs 10049 15.1 9.6 157 21.1 17.6 120 Mineral Creek 10040 22.8 14.0 163 24.3 19.1 127 Cumbres Trestle 10040 32.6 27.6 118 35.4 27.9 127 Cochetopa Pass 10020 3.3 .3 1100* 10.0 8.3 120 Sunflower Flat 10018 21.0 -M * 22.0 -M * Old Battle 10000 38.2 32.9 116 38.6 37.2 104 Mesa Lakes 10000 24.1 17.7 136 31.7 23.0 138 Mancos 10000 23.0 9.7 237 20.8 18.7 111 El Diente Peak 10000 20.9 11.4 183 27.8 21.3 131 Trial Lake 9992 34.9 21.4 163 34.3 25.4 135 Park Reservoir 9960 34.9 26.4 132 40.2 29.4 137 Seeley Creek 9904 21.0 13.4 157 20.0 15.7 127 Overland Res. 9840 16.1 9.6 168 22.5 17.9 126 Gunsight Pass 9820 14.4 13.7 105 16.9 15.0 113 Idarado 9800 17.8 11.0 162 24.2 20.4 119 Donkey Reservoir 9799 6.1 5.6 109 13.1 11.0 119 Trapper Lake 9700 6.0 -M * 16.7 -M * Huntington Horse 9652 28.5 -M * 30.0 -M * Widtsoe #3 9640 12.9 9.3 139 20.1 15.9 126 Buck Pasture 9632 16.6 -M * 21.7 -M * Park Cone 9600 13.0 8.5 153 15.3 13.0 118 Lone Cone 9600 17.8 9.3 191 26.8 21.5 125 Kiln 9600 14.4 9.6 150 19.2 15.8 122 Lasal Mountain 9578 19.8 8.9 222 32.2 21.5 150 Mosby Mtn. 9553 15.8 10.8 146 20.5 15.8 130 Willow Creek Pass 9540 16.9 13.3 127 18.4 14.5 127 Trout Creek 9518 11.6 8.2 141 16.8 14.7 114 Mc Clure Pass 9500 16.0 13.1 122 27.3 22.4 122 Hewinta 9500 11.8 7.9 149 16.8 15.0 112 Mccoy Park 9480 14.0 10.1 139 21.8 18.6 117 Indian Creek 9425 24.3 23.4 104 19.8 23.7 84 Black Flat-U.M. Ck 9414 10.5 6.5 162 16.9 13.0 130 Buck Flat 9409 22.1 13.1 169 27.8 20.8 134 Summit Ranch 9400 10.1 9.9 102 15.4 14.7 105 Rabbit Ears 9400 24.2 25.2 96 32.4 32.4 100 Elkhart Park G.S. 9400 13.6 11.9 114 14.9 14.1 106 Columbine Pass 9400 20.9 10.6 197 31.0 24.9 124 Burro Mountain 9400 14.6 15.6 94 24.5 22.8 107 Pocket Creek 9360 15.4 -M * 16.3 -M * EF Blacks Fork GS 9360 11.9 -M * 13.3 -M * Wrigley Creek 9327 14.0 -M * 23.2 -M * Lost Dog 9320 23.2 23.9 97 28.5 25.7 111 Buffalo Park 9240 15.8 12.2 130 16.2 18.4 88 Dills Camp 9228 11.8 8.6 137 26.1 18.8 139 North Lost Trail 9200 16.5 11.2 147 25.0 23.6 106 Hole-in-Rock 9168 6.0 5.7 105 12.2 10.6 115 Columbine 9160 24.7 20.6 120 30.1 27.0 111 Hickerson Park 9122 8.8 5.3 166 13.1 11.1 118 Scotch Creek 9100 12.2 2.4 508 24.5 19.0 129 Crosho 9100 9.3 7.2 129 17.2 16.9 102 Big Sandy Opening 9080 13.6 12.6 108 15.6 14.2 110 Bear River 9080 12.5 11.0 114 15.5 15.2 102 Phantom Valley 9030 6.9 6.6 105 15.5 15.2 102 Spring Creek Divide 9000 24.7 23.5 105 25.5 24.9 102 Red Pine Ridge 8988 21.4 11.7 183 28.0 21.2 132 Whiskey Park 8950 30.5 25.8 118 34.0 29.7 114 Middle Fork Camp 8940 8.4 11.0 76 16.8 15.3 110 Buckboard Flat 8924 16.2 -M * 28.2 -M * Cascade #2 8920 5.0 .0 * 25.8 20.7 125 Lynx Pass 8880 6.5 8.3 78 15.3 14.1 109 Divide Peak 8880 20.2 18.6 109 24.8 22.9 108 Cascade 8880 13.9 1.6 869 26.6 21.6 123 Blacks Fork Jct 8869 8.6 -M * 14.6 -M * Camp Jackson 8858 19.3 5.3 364 30.7 18.6 165 Fish Lake Utah 8798 11.7 -M * 13.4 -M * Lasal Mountain-Lower 8783 10.9 -M * 22.8 -M * Gros Ventre Summit 8750 9.4 13.2 71 13.4 13.8 97 Timberline 8736 10.4 -M * 21.9 -M * Kings Cabin 8728 10.2 6.9 148 17.7 14.4 123 Stillwater Creek 8720 3.0 .9 333 14.0 11.1 126 Mammoth-Cottonwood 8709 26.9 14.4 187 26.2 17.9 146 Nast Lake 8700 5.6 1.1 509 16.4 13.2 124 Elk River 8700 16.1 15.2 106 20.7 21.4 97 Blind Bull Sum 8650 25.8 24.1 107 20.7 20.3 102 White River #1 8641 13.7 6.5 211 20.7 15.7 132 Upper Joes Valley 8596 10.0 -M * 20.9 -M * Triple Peak 8500 24.0 19.2 125 27.6 26.5 104 Beaver Ck Village 8500 11.2 6.3 178 18.8 16.0 118 Lakefork #3 8464 6.4 -M * 17.8 -M * Dry Lake 8400 19.8 17.5 113 26.2 26.8 98 Chamita 8400 5.9 2.5 236 16.8 14.7 114 New Fork Lake 8340 9.0 8.6 105 10.5 11.3 93 East Willow Creek 8302 8.3 1.9 437 17.3 12.3 141 Loomis Park 8240 14.8 12.8 116 18.3 18.0 102 Corral 8207 5.3 -M * 18.4 -M * Kelley R.S. 8180 14.8 12.4 119 17.4 19.0 92 Sandstone RS 8150 11.1 10.0 111 19.2 19.6 98 Strawberry Divide 8123 21.3 10.4 205 28.1 21.9 128 Snider Basin 8060 8.6 10.6 81 14.3 14.8 97 Daniels-Strawberry 8008 19.0 7.9 241 27.5 21.5 128 East Rim Divide 7930 8.3 9.4 88 13.0 12.3 106 Currant Creek 7915 -M 1.2 * 21.6 15.4 140 Rock Creek 7886 8.0 2.8 286 17.2 12.8 134 Hams Fork 7840 7.0 6.4 109 12.2 12.1 101 Kendall R.S. 7740 8.6 8.1 106 12.5 14.8 84 Battle Mountain 7440 6.1 3.9 156 17.1 16.1 106 ----- ----- Basin Index (%) 135 118 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Normal Snow Water Equivalent and Total Precipitation values If the Basin Index (%) value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Median represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Average value for those sites on this day. Contact your state water supply staff for assistance. Medians and averages are calculated for the period 1981-2010. Provisional data, subject to revision. * Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median for the day is less than 10% of the maximum median value for the year. * Basin - More than half of the sites within the basin are flagged with *, preventing the calculation of a meaningful basin index. The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians (for snow water equivalent) or averages (for precipitation) and the resulting fraction multiplied by 100.