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 TUESDAY: MAY 30 , 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 * 43.4 25.5 170 Black Bear 8170 39.2 26.9 146 61.9 46.1 134 Blind Bull Sum 8650 -M 13.2 * 40.0 24.2 165 Cottonwood Creek 7670 8.8 .0 * 46.1 31.2 148 East Rim Divide 7930 .1 .0 * 23.7 14.9 159 Grand Targhee 9260 51.9 40.6 128 53.5 38.4 139 Granite Creek 6770 .0 .0 * 39.8 23.9 167 Grassy Lake 7265 16.1 7.1 227 62.9 43.4 145 Gros Ventre Summit 8750 8.1 .0 * 27.3 16.9 162 Gunsight Pass 9820 17.2 4.0 430 30.1 18.5 163 Lewis Lake Divide 7850 26.0 13.6 191 60.4 42.4 142 Phillips Bench 8200 24.4 11.3 216 51.7 34.0 152 Salt River Summit 7760 .0 .0 * 32.9 20.7 159 Snake River Station 6920 .0 .0 * 39.9 27.6 145 Spring Creek Divide 9000 31.2 13.0 240 46.6 29.0 161 Thumb Divide 7980 .3 .0 * 31.5 23.7 133 Togwotee Pass 9580 29.5 20.0 148 44.9 30.8 146 Two Ocean Plateau 9240 -M 26.0 * -M 34.2 * Willow Creek 8380 -M 5.5 * 60.0 42.4 142 Younts Peak 8350 .0 5.2 0 35.0 20.5 171 ----- ----- Basin Index (%) 178* 150 MADISON-GALLATIN Black Bear 8170 39.2 26.9 146 61.9 46.1 134 Canyon 7870 .0 .0 * 30.1 20.8 145 Madison Plateau 7750 12.1 8.1 149 41.6 32.9 126 West Yellowstone 6700 .0 .0 * 26.9 18.4 146 Whiskey Creek 6800 -M .0 * 31.8 25.4 125 ----- ----- Basin Index (%) 147* 134 YELLOWSTONE Beartooth Lake 9360 30.3 18.4 165 33.3 25.1 133 Burnt Mtn 5880 .0 .0 * 23.7 20.6 115 Canyon 7870 .0 .0 * 30.1 20.8 145 Cole Creek 7850 12.5 10.8 116 19.6 21.1 93 Evening Star 9200 32.3 19.1 169 51.3 34.7 148 Fisher Creek 9100 41.9 28.9 145 53.8 39.8 135 Northeast Entrance 7350 .0 .0 * 23.8 16.5 144 Parker Peak 9400 29.6 15.1 196 41.6 23.6 176 Sylvan Lake 8420 10.3 8.6 120 43.6 29.1 150 Thumb Divide 7980 .3 .0 * 31.5 23.7 133 Two Ocean Plateau 9240 -M 26.0 * -M 34.2 * White Mill 8700 26.9 18.3 147 40.7 30.2 135 Wolverine 7650 -M .0 * 24.8 16.4 151 ----- ----- Basin Index (%) 154 139 WIND RIVER Burroughs Creek 8750 .0 -M * 30.2 -M * Castle Creek 8400 .0 -M * 19.3 -M * Cold Springs 9630 1.3 .0 * 24.9 15.2 164 Deer Park 9700 30.7 4.6 667 48.1 26.9 179 Hobbs Park 10100 30.5 7.3 418 38.7 20.3 191 Kirwin 9550 16.0 2.8 571 31.5 16.8 188 Little Warm 9370 8.0 .0 * 28.3 18.2 155 Owl Creek 8975 .0 .0 * 17.5 10.5 167 South Pass 9040 27.8 .5 5560* 38.2 23.4 163 St. Lawrence Alt 8620 .0 .0 * 23.5 14.3 164 Togwotee Pass 9580 29.5 20.0 148 44.9 30.8 146 Townsend Creek 8700 9.7 .0 * 32.0 18.0 178 ----- ----- Basin Index (%) 436* 169 BIGHORN BASIN Bald Mtn. 9380 19.2 14.8 130 23.7 23.3 102 Bear Trap Meadow 8200 .0 .0 * 17.3 13.7 126 Bone Springs Div 9350 15.1 10.1 150 23.8 22.0 108 Grave Springs 8550 .0 .0 * 15.9 16.0 99 Kirwin 9550 16.0 2.8 571 31.5 16.8 188 Marquette 8760 12.7 -M * 26.7 -M * Middle Powder 7760 .0 .0 * 16.1 17.2 94 Owl Creek 8975 .0 .0 * 17.5 10.5 167 Powder River Pass 9480 .0 .0 * 19.5 18.5 105 Shell Creek 9580 12.5 10.4 120 19.8 19.7 101 Timber Creek 7950 .0 .0 * 19.1 13.3 144 ----- ----- Basin Index (%) 165* 119 SHOSHONE RIVER Blackwater 9780 35.7 21.0 170 48.5 27.2 178 Evening Star 9200 32.3 19.1 169 51.3 34.7 148 Marquette 8760 12.7 -M * 26.7 -M * Sylvan Road 7120 .0 .0 * 33.3 21.2 157 Younts Peak 8350 .0 5.2 0 35.0 20.5 171 ----- ----- Basin Index (%) 150 162 POWDER RIVER Bear Trap Meadow 8200 .0 .0 * 17.3 13.7 126 Cloud Peak Reservoir 9860 16.5 7.4 223 29.0 21.0 138 Grave Springs 8550 .0 .0 * 15.9 16.0 99 Hansen Sawmill 8360 1.4 .0 * 21.2 14.0 151 Middle Powder 7760 .0 .0 * 16.1 17.2 94 Powder River Pass 9480 .0 .0 * 19.5 18.5 105 Soldier Park 8720 3.3 -M * 23.0 -M * ----- ----- Basin Index (%) 242* 119 TONGUE RIVER Big Goose 7990 4.5 .0 * 21.8 18.1 120 Bone Springs Div 9350 15.1 10.1 150 23.8 22.0 108 Burgess Junction 7880 2.0 .4 500* 18.6 17.9 104 Dome Lake 8880 11.2 .0 * 25.3 20.1 126 Little Goose 8870 8.9 -M * 26.3 -M * Sucker Creek 8880 7.8 1.5 520 21.4 21.3 100 Tie Creek 6870 .0 .0 * 24.8 18.5 134 ----- ----- Basin Index (%) 338* 115 BELLE FOURCHE Cole Canyon 5910 .0 .0 * 14.3 16.2 88 ----- ----- Basin Index (%) * 88 CHEYENNE RIVER BASIN Blind Park 6890 .0 .0 * 15.1 18.1 83 North Rapid Creek 6130 .0 .0 * 13.2 15.7 84 ----- ----- Basin Index (%) * 84 UPPER N. PLATTE Arapaho Ridge 10960 20.2 9.3 217 33.5 29.1 115 Blackhall Mtn 9820 28.0 -M * 45.2 -M * Columbine 9160 .0 .0 * 35.4 31.4 113 Divide Peak 8880 .0 .0 * 28.5 27.3 104 Joe Wright 10120 14.7 15.1 97 38.1 34.1 112 Laprele Creek 8375 .2 .0 * 18.3 17.8 103 Med Bow 10500 35.7 -M * 44.2 -M * North French Creek 10130 22.3 22.2 100 36.8 34.9 105 Never Summer 10280 22.8 16.2 141 26.2 -M * Old Battle 10000 37.2 25.6 145 46.7 43.3 108 Rawah 9020 .2 .0 * 23.1 19.4 119 Sage Creek Basin 7850 -M .0 * 19.6 17.8 110 Sand Lake 10050 30.8 21.5 143 35.8 32.9 109 South Brush Creek 8440 .0 .0 * 17.6 20.9 84 Tower 10500 40.6 38.7 105 56.3 49.0 115 Webber Springs 9250 8.5 .4 2125* 40.5 32.9 123 Willow Creek Pass 9540 9.8 .9 1089* 23.7 18.3 130 Zirkel 9340 4.1 .0 * 50.6 33.9 149 ----- ----- Basin Index (%) 141* 114 SWEETWATER Deer Park 9700 30.7 4.6 667 48.1 26.9 179 Larsen Creek 9000 .2 .6 33* 28.4 -M * South Pass 9040 27.8 .5 5560* 38.2 23.4 163 ----- ----- Basin Index (%) 1030* 172 LOWER N. PLATTE Casper Mtn. 7900 .3 .0 * 22.4 21.5 104 Laprele Creek 8375 .2 .0 * 18.3 17.8 103 Reno Hill 8400 .1 .0 * 22.7 22.5 101 Windy Peak 7900 .0 .0 * 18.8 15.9 118 ----- ----- Basin Index (%) * 106 LARAMIE RIVER Brooklyn Lake 10240 9.5 6.9 138 29.9 28.2 106 Cinnabar Park 9574 2.9 2.8 104 29.5 30.1 98 Crow Creek 8330 .0 .0 * 16.1 15.9 101 Deadman Hill 10220 16.8 9.5 177 30.1 23.8 126 Rawah 9020 .2 .0 * 23.1 19.4 119 Roach 9700 6.1 3.1 197 29.0 25.5 114 ----- ----- Basin Index (%) 159 110 S. PLATTE Black Mountain 8920 -M -M * 21.2 -M * Crow Creek 8330 .0 .0 * 16.1 15.9 101 Deadman Hill 10220 16.8 9.5 177 30.1 23.8 126 ----- ----- Basin Index (%) 177* 116 LITTLE SNAKE RIVER Battle Mountain 7440 .0 .0 * 20.9 19.1 109 Divide Peak 8880 .0 .0 * 28.5 27.3 104 Elk River 8700 .1 .0 * 25.2 25.3 100 Little Snake River 8915 7.7 3.3 233 45.7 36.0 127 Old Battle 10000 37.2 25.6 145 46.7 43.3 108 Sage Creek Basin 7850 -M .0 * 19.6 17.8 110 Sandstone RS 8150 .0 .0 * 20.1 23.1 87 Whiskey Park 8950 11.8 8.8 134 37.8 34.7 109 ----- ----- Basin Index (%) 151* 108 UPPER GREEN RIVER Big Sandy Opening 9080 7.0 .0 * 27.5 17.7 155 Blind Bull Sum 8650 -M 13.2 * 40.0 24.2 165 East Rim Divide 7930 .1 .0 * 23.7 14.9 159 Elkhart Park G.S. 9400 6.4 .5 1280* 27.7 17.7 156 Gros Ventre Summit 8750 8.1 .0 * 27.3 16.9 162 Gunsight Pass 9820 17.2 4.0 430 30.1 18.5 163 Kendall R.S. 7740 .0 .0 * 31.8 17.5 182 Loomis Park 8240 6.8 .0 * 35.6 21.3 167 New Fork Lake 8340 -M .0 * 22.5 14.4 156 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 .0 .0 * 30.2 17.4 174 Spring Creek Divide 9000 31.2 13.0 240 46.6 29.0 161 Triple Peak 8500 15.7 .0 * 46.4 31.4 148 ----- ----- Basin Index (%) 529* 162 LOWER GREEN RIVER Blacks Fork Jct 8869 .0 -M * 19.8 -M * Buck Pasture 9632 .0 -M * 28.9 -M * EF Blacks Fork GS 9360 .0 -M * 24.1 -M * Hams Fork 7840 .1 .0 * 25.0 15.1 166 Hewinta 9500 .0 .0 * 22.4 18.4 122 Hickerson Park 9122 .0 .0 * 16.3 14.2 115 Hole-in-Rock 9168 .0 .0 * 17.2 13.8 125 Indian Creek 9425 28.4 11.9 239 47.1 27.9 169 Kelley R.S. 8180 -M .0 * 35.7 22.7 157 Spirit Lk 10235 .0 -M * 22.6 -M * Steel Creek Park 10158 12.8 10.1 127 26.9 21.9 123 ----- ----- Basin Index (%) 188* 142 UPPER BEAR RIVER Bear River RS 8777 .0 -M * 22.3 -M * Bug Lake 7987 9.0 .0 * 39.2 24.3 161 Burts Miller Ranch 8000 .0 -M * 12.4 -M * Chalk Creek #1 9171 14.1 7.4 191 42.6 31.8 134 Hayden Fork 9130 .0 .0 * 33.3 26.6 125 Kelley R.S. 8180 -M .0 * 35.7 22.7 157 Lily Lake 9133 .0 .0 * 24.1 22.2 109 Monte Cristo 8932 18.8 5.6 336 46.5 32.6 143 Salt River Summit 7760 .0 .0 * 32.9 20.7 159 ----- ----- Basin Index (%) 322* 141 ----------------------------------------------------------------------------- -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.