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: SEPTEMBER 9 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 .1 .0 * 47.0 30.7 153 Black Bear 8170 .1 .0 * 67.2 53.2 126 Blind Bull Sum 8650 .0 .0 * 43.3 29.5 147 Cottonwood Creek 7670 .1 .0 * 49.7 37.4 133 East Rim Divide 7930 .3 .0 * 26.6 19.0 140 Grand Targhee 9260 .0 .0 * 59.5 46.2 129 Granite Creek 6770 .0 .0 * 44.3 28.6 155 Grassy Lake 7265 .2 .0 * 68.0 50.4 135 Gros Ventre Summit 8750 .1 .0 * 32.1 22.2 145 Gunsight Pass 9820 .0 .0 * 35.3 24.5 144 Lewis Lake Divide 7850 .2 .0 * 68.9 49.1 140 Phillips Bench 8200 .0 .0 * 56.5 39.9 142 Salt River Summit 7760 .1 .0 * 33.9 25.4 133 Snake River Station 6920 .0 .0 * 44.1 33.7 131 Spring Creek Divide 9000 .2 .0 * 48.6 34.3 142 Thumb Divide 7980 .0 .0 * 35.0 28.7 122 Togwotee Pass 9580 .0 .0 * 50.4 37.0 136 Two Ocean Plateau 9240 -M .0 * -M 41.5 * Willow Creek 8380 .0 .0 * 63.0 49.8 127 Younts Peak 8350 .0 .0 * 41.9 27.6 152 ----- ----- Basin Index (%) * 137 MADISON-GALLATIN Black Bear 8170 .1 .0 * 67.2 53.2 126 Canyon 7870 .0 .0 * 32.8 26.6 123 Madison Plateau 7750 .0 .0 * 45.6 39.2 116 West Yellowstone 6700 .1 .0 * 30.4 23.2 131 Whiskey Creek 6800 .0 .0 * 35.7 31.6 113 ----- ----- Basin Index (%) * 122 YELLOWSTONE Beartooth Lake 9360 .0 .0 * 39.4 31.7 124 Burnt Mtn 5880 .0 .0 * 27.5 28.1 98 Canyon 7870 .0 .0 * 32.8 26.6 123 Cole Creek 7850 .0 .0 * 22.7 29.1 78 Evening Star 9200 .0 .0 * 57.1 43.0 133 Fisher Creek 9100 .0 .0 * 61.2 49.6 123 Northeast Entrance 7350 .0 .0 * 29.2 23.7 123 Parker Peak 9400 .0 .0 * 49.1 30.3 162 Sylvan Lake 8420 .0 .0 * 49.1 36.4 135 Thumb Divide 7980 .0 .0 * 35.0 28.7 122 Two Ocean Plateau 9240 -M .0 * -M 41.5 * White Mill 8700 .1 .0 * 47.8 38.8 123 Wolverine 7650 -M .0 * 30.5 22.2 137 ----- ----- Basin Index (%) * 124 WIND RIVER Burroughs Creek 8750 .0 -M * 34.2 -M * Castle Creek 8400 .5 -M * 23.8 -M * Cold Springs 9630 .0 .0 * 28.8 20.4 141 Deer Park 9700 .0 .0 * 51.4 33.4 154 Hobbs Park 10100 .1 .0 * 41.7 26.1 160 Kirwin 9550 .0 .0 * 35.9 24.6 146 Little Warm 9370 .1 .0 * 32.6 24.3 134 Owl Creek 8975 .0 .0 * 23.2 16.1 144 South Pass 9040 .0 .0 * 41.1 28.2 146 St. Lawrence Alt 8620 .1 .0 * 26.2 19.1 137 Togwotee Pass 9580 .0 .0 * 50.4 37.0 136 Townsend Creek 8700 .4 .0 * 35.6 23.0 155 ----- ----- Basin Index (%) * 145 BIGHORN BASIN Bald Mtn. 9380 .0 .0 * 27.6 30.2 91 Bear Trap Meadow 8200 .0 .0 * 21.1 19.2 110 Bone Springs Div 9350 .0 .0 * 31.6 29.3 108 Grave Springs 8550 .0 .0 * 17.4 21.5 81 Kirwin 9550 .0 .0 * 35.9 24.6 146 Marquette 8760 .0 -M * 30.8 -M * Middle Powder 7760 .1 .0 * 18.8 23.1 81 Owl Creek 8975 .0 .0 * 23.2 16.1 144 Powder River Pass 9480 .0 .0 * 27.3 25.1 109 Shell Creek 9580 .0 .0 * 26.8 26.4 102 Timber Creek 7950 .0 .0 * 22.4 19.7 114 ----- ----- Basin Index (%) * 107 SHOSHONE RIVER Blackwater 9780 .0 .0 * 54.0 34.5 157 Evening Star 9200 .0 .0 * 57.1 43.0 133 Marquette 8760 .0 -M * 30.8 -M * Sylvan Road 7120 .0 .0 * 38.4 27.1 142 Younts Peak 8350 .0 .0 * 41.9 27.6 152 ----- ----- Basin Index (%) * 145 POWDER RIVER Bear Trap Meadow 8200 .0 .0 * 21.1 19.2 110 Cloud Peak Reservoir 9860 .2 .0 * 34.8 28.5 122 Grave Springs 8550 .0 .0 * 17.4 21.5 81 Hansen Sawmill 8360 .0 .0 * -M 20.5 * Middle Powder 7760 .1 .0 * 18.8 23.1 81 Powder River Pass 9480 .0 .0 * 27.3 25.1 109 Soldier Park 8720 .0 -M * 28.8 -M * ----- ----- Basin Index (%) * 102 TONGUE RIVER Big Goose 7990 .0 .0 * 25.1 23.1 109 Bone Springs Div 9350 .0 .0 * 31.6 29.3 108 Burgess Junction 7880 .1 .0 * 26.9 24.0 112 Dome Lake 8880 .0 .0 * 30.4 26.5 115 Little Goose 8870 .0 -M * 30.6 -M * Sucker Creek 8880 .0 .0 * 30.5 28.0 109 Tie Creek 6870 .1 .0 * 29.5 25.1 118 ----- ----- Basin Index (%) * 112 BELLE FOURCHE Cole Canyon 5910 .2 .0 * 22.6 24.1 94 ----- ----- Basin Index (%) * 94 CHEYENNE RIVER BASIN Blind Park 6890 .0 .0 * 22.9 26.3 87 North Rapid Creek 6130 .1 .0 * 22.7 25.6 89 ----- ----- Basin Index (%) * 88 UPPER N. PLATTE Arapaho Ridge 10960 -M .0 * -M 36.2 * Blackhall Mtn 9820 .7 -M * 48.1 -M * Columbine 9160 .3 .0 * 38.5 36.4 106 Divide Peak 8880 .0 .0 * 29.6 32.1 92 Joe Wright 10120 .3 .0 * 43.1 42.0 103 Laprele Creek 8375 .0 .0 * 22.9 23.0 100 Med Bow 10500 .0 -M * 49.9 -M * North French Creek 10130 -M .0 * 40.7 41.5 98 Never Summer 10280 -M .0 * 30.1 -M * Old Battle 10000 .2 .0 * 50.6 49.5 102 Rawah 9020 .0 .0 * 26.3 25.6 103 Sage Creek Basin 7850 -M .0 * 21.2 21.7 98 Sand Lake 10050 .0 .0 * 41.2 39.2 105 South Brush Creek 8440 .1 .0 * 18.9 25.9 73 Tower 10500 -M .0 * -M 56.0 * Webber Springs 9250 .5 .0 * 43.2 38.5 112 Willow Creek Pass 9540 .1 .0 * 27.1 24.6 110 Zirkel 9340 .0 .0 * 54.5 40.8 134 ----- ----- Basin Index (%) * 104 SWEETWATER Deer Park 9700 .0 .0 * 51.4 33.4 154 Larsen Creek 9000 .0 .0 * 30.8 -M * South Pass 9040 .0 .0 * 41.1 28.2 146 ----- ----- Basin Index (%) * 150 LOWER N. PLATTE Casper Mtn. 7900 .1 .0 * 25.7 26.5 97 Laprele Creek 8375 .0 .0 * 22.9 23.0 100 Reno Hill 8400 .0 .0 * 25.6 27.4 93 Windy Peak 7900 .0 .0 * 22.3 21.8 102 ----- ----- Basin Index (%) * 98 LARAMIE RIVER Brooklyn Lake 10240 .0 .0 * 32.3 33.9 95 Cinnabar Park 9574 .0 .0 * 33.7 36.2 93 Crow Creek 8330 -M .0 * 19.5 24.5 80 Deadman Hill 10220 .0 .0 * 34.3 29.6 116 Rawah 9020 .0 .0 * 26.3 25.6 103 Roach 9700 .0 .0 * 33.8 31.6 107 ----- ----- Basin Index (%) * 99 S. PLATTE Black Mountain 8920 -M -M * 25.7 -M * Crow Creek 8330 -M .0 * 19.5 24.5 80 Deadman Hill 10220 .0 .0 * 34.3 29.6 116 ----- ----- Basin Index (%) * 99 LITTLE SNAKE RIVER Battle Mountain 7440 .0 .0 * 21.9 22.9 96 Divide Peak 8880 .0 .0 * 29.6 32.1 92 Elk River 8700 .0 .0 * 28.2 30.8 92 Little Snake River 8915 .1 .0 * 49.6 41.2 120 Old Battle 10000 .2 .0 * 50.6 49.5 102 Sage Creek Basin 7850 -M .0 * 21.2 21.7 98 Sandstone RS 8150 .1 .0 * 22.6 27.8 81 Whiskey Park 8950 .1 .0 * 39.5 40.0 99 ----- ----- Basin Index (%) * 99 UPPER GREEN RIVER Big Sandy Opening 9080 .0 .0 * 30.1 22.7 133 Blind Bull Sum 8650 .0 .0 * 43.3 29.5 147 East Rim Divide 7930 .3 .0 * 26.6 19.0 140 Elkhart Park G.S. 9400 .1 .0 * 31.4 23.1 136 Gros Ventre Summit 8750 .1 .0 * 32.1 22.2 145 Gunsight Pass 9820 .0 .0 * 35.3 24.5 144 Kendall R.S. 7740 .1 .0 * 37.0 21.9 169 Loomis Park 8240 .1 .0 * 39.9 26.4 151 New Fork Lake 8340 .0 .0 * 26.4 19.2 138 Pocket Creek 9360 .0 -M * 28.9 -M * Snider Basin 8060 .1 .0 * 31.7 21.0 151 Spring Creek Divide 9000 .2 .0 * 48.6 34.3 142 Triple Peak 8500 .0 .0 * 49.9 36.9 135 ----- ----- Basin Index (%) * 144 LOWER GREEN RIVER Blacks Fork Jct 8869 .0 -M * 23.0 -M * Buck Pasture 9632 1.1 -M * 33.6 -M * EF Blacks Fork GS 9360 -M -M * 29.2 -M * Hams Fork 7840 -M .0 * -M 18.9 * Hewinta 9500 .0 .0 * 27.0 24.6 110 Hickerson Park 9122 .4 .0 * 22.1 20.5 108 Hole-in-Rock 9168 .0 .0 * 23.7 19.9 119 Indian Creek 9425 .1 .0 * 48.9 32.5 150 Kelley R.S. 8180 .3 .0 * 38.9 26.9 145 Spirit Lk 10235 .0 -M * 30.6 -M * Steel Creek Park 10158 .0 .0 * 32.9 28.4 116 ----- ----- Basin Index (%) * 127 UPPER BEAR RIVER Bear River RS 8777 .0 -M * 24.5 -M * Bug Lake 7987 .8 .0 * 42.0 28.4 148 Burts Miller Ranch 8000 .1 -M * 13.7 -M * Chalk Creek #1 9171 .0 .0 * 46.9 38.3 122 Hayden Fork 9130 .0 .0 * 37.2 32.5 114 Kelley R.S. 8180 .3 .0 * 38.9 26.9 145 Lily Lake 9133 .0 .0 * 28.9 27.9 104 Monte Cristo 8932 .3 .0 * 50.3 37.6 134 Salt River Summit 7760 .1 .0 * 33.9 25.4 133 ----- ----- Basin Index (%) * 128 ----------------------------------------------------------------------------- -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.