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: AUGUST 5 , 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 * 46.6 29.2 160 Black Bear 8170 .0 .0 * 66.1 51.5 128 Blind Bull Sum 8650 .0 .0 * 42.6 27.9 153 Cottonwood Creek 7670 .0 .0 * 48.8 35.5 137 East Rim Divide 7930 .1 .0 * 26.1 17.6 148 Grand Targhee 9260 .0 .0 * 58.8 44.0 134 Granite Creek 6770 .0 .0 * 43.7 27.1 161 Grassy Lake 7265 .0 .0 * 67.1 48.6 138 Gros Ventre Summit 8750 .0 .0 * 30.2 20.6 147 Gunsight Pass 9820 .0 .0 * 33.4 22.3 150 Lewis Lake Divide 7850 .1 .0 * 68.0 47.3 144 Phillips Bench 8200 .0 .0 * 55.8 38.2 146 Salt River Summit 7760 .0 .0 * 33.2 24.0 138 Snake River Station 6920 .0 .0 * 43.7 31.8 137 Spring Creek Divide 9000 .1 .0 * 48.1 32.6 148 Thumb Divide 7980 .0 .0 * 34.3 27.2 126 Togwotee Pass 9580 .0 .0 * 49.8 35.3 141 Two Ocean Plateau 9240 -M .0 * -M 39.6 * Willow Creek 8380 .0 .0 * 62.6 47.6 132 Younts Peak 8350 .0 .0 * 40.5 25.4 159 ----- ----- Basin Index (%) * 142 MADISON-GALLATIN Black Bear 8170 .0 .0 * 66.1 51.5 128 Canyon 7870 .0 .0 * 32.2 25.1 128 Madison Plateau 7750 .0 .0 * 44.4 37.5 118 West Yellowstone 6700 .0 .0 * 28.9 22.0 131 Whiskey Creek 6800 .0 .0 * 33.7 30.1 112 ----- ----- Basin Index (%) * 124 YELLOWSTONE Beartooth Lake 9360 .0 .0 * 37.3 30.0 124 Burnt Mtn 5880 .0 .0 * 27.1 26.3 103 Canyon 7870 .0 .0 * 32.2 25.1 128 Cole Creek 7850 .0 .0 * 22.2 27.1 82 Evening Star 9200 .0 .0 * 57.0 40.9 139 Fisher Creek 9100 .0 .0 * 59.7 47.2 126 Northeast Entrance 7350 .0 .0 * 27.5 21.9 126 Parker Peak 9400 .1 .0 * 47.8 28.8 166 Sylvan Lake 8420 .0 .0 * 47.7 34.7 137 Thumb Divide 7980 .0 .0 * 34.3 27.2 126 Two Ocean Plateau 9240 -M .0 * -M 39.6 * White Mill 8700 .1 .0 * 46.2 36.6 126 Wolverine 7650 -M .0 * 29.6 20.5 144 ----- ----- Basin Index (%) * 128 WIND RIVER Burroughs Creek 8750 .0 -M * 34.6 -M * Castle Creek 8400 .2 -M * 22.4 -M * Cold Springs 9630 .0 .0 * 27.8 19.0 146 Deer Park 9700 .0 .0 * 49.7 31.3 159 Hobbs Park 10100 .1 .0 * 40.1 24.7 162 Kirwin 9550 .0 .0 * 34.6 22.4 154 Little Warm 9370 .0 .0 * 31.6 22.4 141 Owl Creek 8975 .0 .0 * 20.5 14.7 139 South Pass 9040 .0 .0 * 39.7 26.8 148 St. Lawrence Alt 8620 .0 .0 * 24.9 18.0 138 Togwotee Pass 9580 .0 .0 * 49.8 35.3 141 Townsend Creek 8700 .3 .0 * 32.9 21.7 152 ----- ----- Basin Index (%) * 149 BIGHORN BASIN Bald Mtn. 9380 .0 .0 * -M 28.7 * Bear Trap Meadow 8200 .0 .0 * 20.0 18.0 111 Bone Springs Div 9350 .0 .0 * -M 27.6 * Grave Springs 8550 .0 .0 * 16.7 20.2 83 Kirwin 9550 .0 .0 * 34.6 22.4 154 Marquette 8760 .0 -M * 30.1 -M * Middle Powder 7760 .1 .0 * 18.3 21.8 84 Owl Creek 8975 .0 .0 * 20.5 14.7 139 Powder River Pass 9480 .0 .0 * 25.5 23.7 108 Shell Creek 9580 .0 .0 * 25.9 25.0 104 Timber Creek 7950 -M .0 * -M 18.0 * ----- ----- Basin Index (%) * 111 SHOSHONE RIVER Blackwater 9780 .0 .0 * 53.2 32.4 164 Evening Star 9200 .0 .0 * 57.0 40.9 139 Marquette 8760 .0 -M * 30.1 -M * Sylvan Road 7120 .0 .0 * 36.9 25.4 145 Younts Peak 8350 .0 .0 * 40.5 25.4 159 ----- ----- Basin Index (%) * 151 POWDER RIVER Bear Trap Meadow 8200 .0 .0 * 20.0 18.0 111 Cloud Peak Reservoir 9860 -M .0 * 33.4 26.8 125 Grave Springs 8550 .0 .0 * 16.7 20.2 83 Hansen Sawmill 8360 .0 .0 * -M 18.9 * Middle Powder 7760 .1 .0 * 18.3 21.8 84 Powder River Pass 9480 .0 .0 * 25.5 23.7 108 Soldier Park 8720 .0 -M * 27.7 -M * ----- ----- Basin Index (%) * 103 TONGUE RIVER Big Goose 7990 .0 .0 * 23.4 21.4 109 Bone Springs Div 9350 .0 .0 * -M 27.6 * Burgess Junction 7880 .0 .0 * 26.2 22.7 115 Dome Lake 8880 .0 .0 * 29.3 24.9 118 Little Goose 8870 .0 -M * 29.5 -M * Sucker Creek 8880 .0 .0 * 29.1 26.6 109 Tie Creek 6870 .0 .0 * 28.3 23.4 121 ----- ----- Basin Index (%) * 115 BELLE FOURCHE Cole Canyon 5910 .1 .0 * 21.0 22.1 95 ----- ----- Basin Index (%) * 95 CHEYENNE RIVER BASIN Blind Park 6890 .1 .0 * 21.5 24.5 88 North Rapid Creek 6130 .0 .0 * 21.1 23.4 90 ----- ----- Basin Index (%) * 89 UPPER N. PLATTE Arapaho Ridge 10960 -M .0 * -M 33.8 * Blackhall Mtn 9820 -M -M * 46.9 -M * Columbine 9160 .2 .0 * 36.4 34.9 104 Divide Peak 8880 .0 .0 * 27.7 30.4 91 Joe Wright 10120 .4 .0 * 41.1 39.4 104 Laprele Creek 8375 .0 .0 * 21.4 21.5 100 Med Bow 10500 .0 -M * 47.9 -M * North French Creek 10130 .1 .0 * 38.8 39.7 98 Never Summer 10280 -M .0 * 28.6 -M * Old Battle 10000 .0 .0 * 49.1 47.6 103 Rawah 9020 .0 .0 * 25.2 23.6 107 Sage Creek Basin 7850 -M .0 * 20.1 20.2 100 Sand Lake 10050 .2 .0 * 40.7 37.7 108 South Brush Creek 8440 .0 .0 * 18.3 24.3 75 Tower 10500 -M .0 * -M 53.9 * Webber Springs 9250 .0 .0 * 42.0 36.8 114 Willow Creek Pass 9540 .1 .0 * 25.5 22.5 113 Zirkel 9340 .7 .0 * 53.0 38.5 138 ----- ----- Basin Index (%) * 105 SWEETWATER Deer Park 9700 .0 .0 * 49.7 31.3 159 Larsen Creek 9000 .0 .0 * 29.8 -M * South Pass 9040 .0 .0 * 39.7 26.8 148 ----- ----- Basin Index (%) * 154 LOWER N. PLATTE Casper Mtn. 7900 .0 .0 * 25.1 25.4 99 Laprele Creek 8375 .0 .0 * 21.4 21.5 100 Reno Hill 8400 .0 .0 * 25.3 26.2 97 Windy Peak 7900 .2 .0 * 21.2 20.3 104 ----- ----- Basin Index (%) * 100 LARAMIE RIVER Brooklyn Lake 10240 .3 .0 * 31.5 32.5 97 Cinnabar Park 9574 .0 .0 * 31.8 34.4 92 Crow Creek 8330 -M .0 * 18.1 22.3 81 Deadman Hill 10220 .0 .0 * 32.2 27.8 116 Rawah 9020 .0 .0 * 25.2 23.6 107 Roach 9700 .0 .0 * 32.2 29.8 108 ----- ----- Basin Index (%) * 100 S. PLATTE Black Mountain 8920 -M -M * 22.2 -M * Crow Creek 8330 -M .0 * 18.1 22.3 81 Deadman Hill 10220 .0 .0 * 32.2 27.8 116 ----- ----- Basin Index (%) * 100 LITTLE SNAKE RIVER Battle Mountain 7440 -M .0 * 21.8 21.6 101 Divide Peak 8880 .0 .0 * 27.7 30.4 91 Elk River 8700 .0 .0 * 27.2 29.0 94 Little Snake River 8915 .1 .0 * 48.3 39.6 122 Old Battle 10000 .0 .0 * 49.1 47.6 103 Sage Creek Basin 7850 -M .0 * 20.1 20.2 100 Sandstone RS 8150 .3 .0 * 21.0 26.1 80 Whiskey Park 8950 .1 .0 * 38.8 38.4 101 ----- ----- Basin Index (%) * 100 UPPER GREEN RIVER Big Sandy Opening 9080 .0 .0 * 29.5 21.2 139 Blind Bull Sum 8650 .0 .0 * 42.6 27.9 153 East Rim Divide 7930 .1 .0 * 26.1 17.6 148 Elkhart Park G.S. 9400 .0 .0 * 30.6 21.3 144 Gros Ventre Summit 8750 .0 .0 * 30.2 20.6 147 Gunsight Pass 9820 .0 .0 * 33.4 22.3 150 Kendall R.S. 7740 .1 .0 * 36.0 20.4 176 Loomis Park 8240 .0 .0 * 38.8 24.7 157 New Fork Lake 8340 .0 .0 * 26.9 17.7 152 Pocket Creek 9360 .0 -M * -M -M * Snider Basin 8060 .0 .0 * 31.1 19.9 156 Spring Creek Divide 9000 .1 .0 * 48.1 32.6 148 Triple Peak 8500 .0 .0 * 49.1 35.2 139 ----- ----- Basin Index (%) * 150 LOWER GREEN RIVER Blacks Fork Jct 8869 .0 -M * 20.9 -M * Buck Pasture 9632 .0 -M * 30.7 -M * EF Blacks Fork GS 9360 -M -M * 26.2 -M * Hams Fork 7840 .0 .0 * 26.8 17.8 151 Hewinta 9500 .0 .0 * 24.4 22.5 108 Hickerson Park 9122 .4 .0 * 20.3 18.2 112 Hole-in-Rock 9168 .0 .0 * 21.1 17.6 120 Indian Creek 9425 .0 .0 * 48.6 31.1 156 Kelley R.S. 8180 .1 .0 * 37.5 25.6 146 Spirit Lk 10235 .0 -M * 27.5 -M * Steel Creek Park 10158 -M .0 * 29.0 26.2 111 ----- ----- Basin Index (%) * 131 UPPER BEAR RIVER Bear River RS 8777 .0 -M * 23.4 -M * Bug Lake 7987 .7 .0 * 40.5 26.9 151 Burts Miller Ranch 8000 .0 -M * 12.9 -M * Chalk Creek #1 9171 .0 .0 * 44.0 36.1 122 Hayden Fork 9130 .0 .0 * 35.0 30.4 115 Kelley R.S. 8180 .1 .0 * 37.5 25.6 146 Lily Lake 9133 .0 .0 * 27.1 25.8 105 Monte Cristo 8932 .3 .0 * 48.8 35.9 136 Salt River Summit 7760 .0 .0 * 33.2 24.0 138 ----- ----- Basin Index (%) * 130 ----------------------------------------------------------------------------- -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.