Water Resources Data System & State Climate Office

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 SATURDAY: JULY 22 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 .0 .0 * 46.3 28.6 162 Black Bear 8170 .0 .0 * 65.7 50.7 130 Blind Bull Sum 8650 .0 .0 * 42.5 27.2 156 Cottonwood Creek 7670 .0 .0 * 48.7 34.7 140 East Rim Divide 7930 .0 .0 * 26.2 17.1 153 Grand Targhee 9260 .0 .0 * 57.7 43.5 133 Granite Creek 6770 .0 .0 * 43.7 26.5 165 Grassy Lake 7265 .0 .0 * 67.0 48.0 140 Gros Ventre Summit 8750 .0 .0 * 29.9 19.8 151 Gunsight Pass 9820 .0 .0 * 33.0 21.6 153 Lewis Lake Divide 7850 .0 .0 * 67.5 46.6 145 Phillips Bench 8200 .0 .0 * 55.4 37.5 148 Salt River Summit 7760 .0 .0 * 33.2 23.4 142 Snake River Station 6920 .0 .0 * 43.5 31.2 139 Spring Creek Divide 9000 .0 .0 * 47.9 32.0 150 Thumb Divide 7980 .0 .0 * 34.2 26.8 128 Togwotee Pass 9580 .0 .0 * 49.2 34.3 143 Two Ocean Plateau 9240 -M .0 * -M 38.7 * Willow Creek 8380 .0 .0 * 62.5 46.6 134 Younts Peak 8350 .0 .0 * 39.8 24.4 163 ----- ----- Basin Index (%) * 144 MADISON-GALLATIN Black Bear 8170 .0 .0 * 65.7 50.7 130 Canyon 7870 .0 .0 * 31.7 24.4 130 Madison Plateau 7750 .0 .0 * 44.1 36.9 120 West Yellowstone 6700 .0 .0 * 28.4 21.4 133 Whiskey Creek 6800 .0 .0 * 33.8 29.5 115 ----- ----- Basin Index (%) * 125 YELLOWSTONE Beartooth Lake 9360 .0 .0 * 36.3 29.2 124 Burnt Mtn 5880 .0 .0 * 27.1 25.4 107 Canyon 7870 .0 .0 * 31.7 24.4 130 Cole Creek 7850 .0 .0 * 21.9 26.1 84 Evening Star 9200 .0 .0 * 55.9 39.9 140 Fisher Creek 9100 .0 .0 * 58.9 46.1 128 Northeast Entrance 7350 .0 .0 * 26.9 21.0 128 Parker Peak 9400 .1 .0 * 45.5 28.0 162 Sylvan Lake 8420 .0 .0 * 47.3 33.9 140 Thumb Divide 7980 .0 .0 * 34.2 26.8 128 Two Ocean Plateau 9240 -M .0 * -M 38.7 * White Mill 8700 .0 .0 * 44.9 35.6 126 Wolverine 7650 -M .0 * 27.8 19.7 141 ----- ----- Basin Index (%) * 129 WIND RIVER Burroughs Creek 8750 .0 -M * 33.8 -M * Castle Creek 8400 .1 -M * 21.9 -M * Cold Springs 9630 .0 .0 * 26.9 18.2 148 Deer Park 9700 .0 .0 * 49.5 30.5 162 Hobbs Park 10100 .1 .0 * 40.7 23.8 171 Kirwin 9550 .0 .0 * 33.8 21.1 160 Little Warm 9370 .0 .0 * 31.1 21.6 144 Owl Creek 8975 .0 .0 * 20.1 13.8 146 South Pass 9040 .0 .0 * 39.7 26.2 152 St. Lawrence Alt 8620 .0 .0 * 24.8 17.3 143 Togwotee Pass 9580 .0 .0 * 49.2 34.3 143 Townsend Creek 8700 .1 .0 * 33.2 20.9 159 ----- ----- Basin Index (%) * 153 BIGHORN BASIN Bald Mtn. 9380 .0 .0 * 26.4 27.8 95 Bear Trap Meadow 8200 .0 .0 * 19.9 17.3 115 Bone Springs Div 9350 .0 .0 * 27.7 26.6 104 Grave Springs 8550 .1 .0 * 16.3 19.3 84 Kirwin 9550 .0 .0 * 33.8 21.1 160 Marquette 8760 .0 -M * 29.5 -M * Middle Powder 7760 .0 .0 * 17.9 21.0 85 Owl Creek 8975 .0 .0 * 20.1 13.8 146 Powder River Pass 9480 .0 .0 * 23.5 22.8 103 Shell Creek 9580 .0 .0 * 25.1 24.2 104 Timber Creek 7950 .0 .0 * 21.0 17.0 124 ----- ----- Basin Index (%) * 110 SHOSHONE RIVER Blackwater 9780 .0 .0 * 51.8 31.5 164 Evening Star 9200 .0 .0 * 55.9 39.9 140 Marquette 8760 .0 -M * 29.5 -M * Sylvan Road 7120 .0 .0 * 36.3 24.9 146 Younts Peak 8350 .0 .0 * 39.8 24.4 163 ----- ----- Basin Index (%) * 152 POWDER RIVER Bear Trap Meadow 8200 .0 .0 * 19.9 17.3 115 Cloud Peak Reservoir 9860 .0 .0 * 32.5 25.7 126 Grave Springs 8550 .1 .0 * 16.3 19.3 84 Hansen Sawmill 8360 .0 .0 * -M 18.0 * Middle Powder 7760 .0 .0 * 17.9 21.0 85 Powder River Pass 9480 .0 .0 * 23.5 22.8 103 Soldier Park 8720 .0 -M * 26.6 -M * ----- ----- Basin Index (%) * 104 TONGUE RIVER Big Goose 7990 .0 .0 * 23.6 20.7 114 Bone Springs Div 9350 .0 .0 * 27.7 26.6 104 Burgess Junction 7880 .0 .0 * 25.1 21.9 115 Dome Lake 8880 .0 .0 * 28.6 24.1 119 Little Goose 8870 .0 -M * 28.7 -M * Sucker Creek 8880 .0 .0 * 28.3 25.8 110 Tie Creek 6870 .0 .0 * 27.9 22.6 123 ----- ----- Basin Index (%) * 114 BELLE FOURCHE Cole Canyon 5910 .0 .0 * 19.0 21.0 90 ----- ----- Basin Index (%) * 90 CHEYENNE RIVER BASIN Blind Park 6890 .1 .0 * 20.0 23.5 85 North Rapid Creek 6130 .0 .0 * 19.3 21.9 88 ----- ----- Basin Index (%) * 87 UPPER N. PLATTE Arapaho Ridge 10960 .2 .0 * 34.2 32.9 104 Blackhall Mtn 9820 -M -M * 46.5 -M * Columbine 9160 .3 .0 * 36.3 34.1 106 Divide Peak 8880 .0 .0 * 27.4 29.7 92 Joe Wright 10120 -M .0 * 38.9 38.1 102 Laprele Creek 8375 .0 .0 * 19.8 20.8 95 Med Bow 10500 .0 -M * 47.2 -M * North French Creek 10130 -M .0 * 38.4 38.7 99 Never Summer 10280 .0 .0 * 27.1 -M * Old Battle 10000 -M .0 * 48.6 46.7 104 Rawah 9020 .1 .0 * 24.5 22.5 109 Sage Creek Basin 7850 -M .0 * 19.4 19.7 98 Sand Lake 10050 -M .0 * 39.1 36.8 106 South Brush Creek 8440 .0 .0 * 17.8 23.7 75 Tower 10500 .0 .0 * 59.6 52.9 113 Webber Springs 9250 .0 .0 * 41.7 35.8 116 Willow Creek Pass 9540 .1 .0 * 24.5 21.5 114 Zirkel 9340 .8 .0 * 52.3 37.7 139 ----- ----- Basin Index (%) * 106 SWEETWATER Deer Park 9700 .0 .0 * 49.5 30.5 162 Larsen Creek 9000 .0 .0 * 29.6 -M * South Pass 9040 .0 .0 * 39.7 26.2 152 ----- ----- Basin Index (%) * 157 LOWER N. PLATTE Casper Mtn. 7900 .0 .0 * 24.0 24.8 97 Laprele Creek 8375 .0 .0 * 19.8 20.8 95 Reno Hill 8400 .0 .0 * 23.1 25.5 91 Windy Peak 7900 .2 .0 * 20.1 19.3 104 ----- ----- Basin Index (%) * 96 LARAMIE RIVER Brooklyn Lake 10240 -M .0 * 31.5 31.6 100 Cinnabar Park 9574 .0 .0 * 31.2 33.6 93 Crow Creek 8330 -M .0 * 17.4 20.6 84 Deadman Hill 10220 .0 .0 * 31.3 26.7 117 Rawah 9020 .1 .0 * 24.5 22.5 109 Roach 9700 .0 .0 * 29.8 28.8 103 ----- ----- Basin Index (%) * 101 S. PLATTE Black Mountain 8920 -M -M * 21.5 -M * Crow Creek 8330 -M .0 * 17.4 20.6 84 Deadman Hill 10220 .0 .0 * 31.3 26.7 117 ----- ----- Basin Index (%) * 103 LITTLE SNAKE RIVER Battle Mountain 7440 .0 .0 * 21.3 21.0 101 Divide Peak 8880 .0 .0 * 27.4 29.7 92 Elk River 8700 .0 .0 * 26.0 28.1 93 Little Snake River 8915 .1 .0 * 48.2 38.9 124 Old Battle 10000 -M .0 * 48.6 46.7 104 Sage Creek Basin 7850 -M .0 * 19.4 19.7 98 Sandstone RS 8150 .2 .0 * 19.6 25.4 77 Whiskey Park 8950 .1 .0 * 38.6 37.7 102 ----- ----- Basin Index (%) * 101 UPPER GREEN RIVER Big Sandy Opening 9080 .0 .0 * 29.2 20.5 142 Blind Bull Sum 8650 .0 .0 * 42.5 27.2 156 East Rim Divide 7930 .0 .0 * 26.2 17.1 153 Elkhart Park G.S. 9400 .0 .0 * 30.2 20.6 147 Gros Ventre Summit 8750 .0 .0 * 29.9 19.8 151 Gunsight Pass 9820 .0 .0 * 33.0 21.6 153 Kendall R.S. 7740 .0 .0 * 35.7 19.8 180 Loomis Park 8240 .0 .0 * 38.5 23.9 161 New Fork Lake 8340 .0 .0 * 26.9 17.1 157 Pocket Creek 9360 .0 -M * -M -M * Snider Basin 8060 .0 .0 * 30.8 19.4 159 Spring Creek Divide 9000 .0 .0 * 47.9 32.0 150 Triple Peak 8500 .0 .0 * 48.7 34.6 141 ----- ----- Basin Index (%) * 153 LOWER GREEN RIVER Blacks Fork Jct 8869 .0 -M * 20.6 -M * Buck Pasture 9632 .0 -M * 29.9 -M * EF Blacks Fork GS 9360 -M -M * 25.2 -M * Hams Fork 7840 .0 .0 * 26.7 17.3 154 Hewinta 9500 .0 .0 * 23.8 21.4 111 Hickerson Park 9122 .4 .0 * 19.4 17.1 113 Hole-in-Rock 9168 .0 .0 * 20.2 16.6 122 Indian Creek 9425 .0 .0 * 48.5 30.5 159 Kelley R.S. 8180 .0 .0 * 37.4 25.1 149 Spirit Lk 10235 .0 -M * 26.2 -M * Steel Creek Park 10158 -M .0 * 28.0 24.9 112 ----- ----- Basin Index (%) * 133 UPPER BEAR RIVER Bear River RS 8777 .0 -M * 23.1 -M * Bug Lake 7987 .7 .0 * 40.5 26.5 153 Burts Miller Ranch 8000 .0 -M * 12.8 -M * Chalk Creek #1 9171 .0 .0 * 43.5 35.1 124 Hayden Fork 9130 .0 .0 * 34.0 29.4 116 Kelley R.S. 8180 .0 .0 * 37.4 25.1 149 Lily Lake 9133 .0 .0 * 26.8 24.9 108 Monte Cristo 8932 .3 .0 * 48.5 35.3 137 Salt River Summit 7760 .0 .0 * 33.2 23.4 142 ----- ----- Basin Index (%) * 132 ----------------------------------------------------------------------------- -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. ---------------------------------------------------------------------------- -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.