Supercell over Laramie
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Wyoming Snow Precipitation Update

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 3 , 2016 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 15.8 15.0 105 19.8 20.4 97 Black Bear 8170 28.2 36.8 77 33.8 37.0 91 Blind Bull Sum 8650 25.3 22.8 111 16.4 19.0 86 Cottonwood Creek 7670 21.3 21.3 100 25.6 24.0 107 East Rim Divide 7930 10.7 10.1 106 10.8 11.4 95 Grand Targhee 9260 39.3 37.2 106 29.9 30.0 100 Granite Creek 6770 13.6 14.8 92 17.0 19.2 89 Grassy Lake 7265 30.8 31.6 97 34.8 35.0 99 Gros Ventre Summit 8750 11.2 13.0 86 10.7 12.6 85 Gunsight Pass 9820 13.8 13.5 102 14.4 13.4 107 Lewis Lake Divide 7850 29.6 29.6 100 31.9 34.5 92 Phillips Bench 8200 22.2 24.6 90 25.5 27.4 93 Salt River Summit 7760 13.5 13.0 104 15.3 16.2 94 Snake River Station 6920 17.1 15.2 112 22.9 21.8 105 Spring Creek Divide 9000 25.2 22.5 112 23.3 23.2 100 Thumb Divide 7980 14.0 14.8 95 15.0 18.0 83 Togwotee Pass 9580 21.3 21.7 98 24.2 23.6 103 Two Ocean Plateau 9240 26.3 25.7 102 24.7 26.4 94 Willow Creek 8380 28.5 28.1 101 31.6 32.7 97 Younts Peak 8350 14.1 14.2 99 13.4 15.3 88 ----- ----- Basin Index (%) 99 96 MADISON-GALLATIN Black Bear 8170 28.2 36.8 77 33.8 37.0 91 Canyon 7870 10.5 12.4 85 13.2 15.7 84 Madison Plateau 7750 21.5 21.4 100 22.2 25.5 87 West Yellowstone 6700 10.4 10.2 102 13.0 13.8 94 Whiskey Creek 6800 13.3 15.0 89 16.2 19.5 83 ----- ----- Basin Index (%) 88 88 YELLOWSTONE Beartooth Lake 9360 16.9 21.2 80 17.7 19.1 93 Burnt Mtn 5880 2.4 4.5 53 10.9 12.4 88 Canyon 7870 10.5 12.4 85 13.2 15.7 84 Cole Creek 7850 11.0 13.9 79 -M 12.2 * Evening Star 9200 25.1 23.8 105 27.8 26.4 105 Fisher Creek 9100 28.6 30.6 93 25.8 30.7 84 Northeast Entrance 7350 7.9 9.4 84 11.5 11.8 97 Parker Peak 9400 20.2 18.9 107 20.5 17.0 121 Sylvan Lake 8420 17.2 19.2 90 22.7 21.6 105 Thumb Divide 7980 14.0 14.8 95 15.0 18.0 83 Two Ocean Plateau 9240 26.3 25.7 102 24.7 26.4 94 White Mill 8700 22.8 21.8 105 21.6 22.9 94 Wolverine 7650 -M 9.3 * 11.7 11.8 99 ----- ----- Basin Index (%) 94 95 WIND RIVER Burroughs Creek 8750 10.6 -M * 12.9 -M * Castle Creek 8400 4.5 -M * 6.3 -M * Cold Springs 9630 9.2 7.1 130 10.0 9.7 103 Deer Park 9700 16.5 14.9 111 17.2 19.1 90 Hobbs Park 10100 16.3 13.6 120 15.5 12.8 121 Kirwin 9550 10.8 9.5 114 12.6 11.2 112 Little Warm 9370 9.3 10.2 91 11.3 12.4 91 Owl Creek 8975 4.9 5.7 86 5.4 5.8 93 South Pass 9040 14.5 15.0 97 12.9 16.9 76 St. Lawrence Alt 8620 7.2 6.8 106 9.2 8.7 106 Togwotee Pass 9580 21.3 21.7 98 24.2 23.6 103 Townsend Creek 8700 11.2 9.2 122 12.5 11.5 109 ----- ----- Basin Index (%) 107 99 BIGHORN BASIN Bald Mtn. 9380 14.9 18.9 79 11.9 16.5 72 Bear Trap Meadow 8200 7.3 5.1 143 6.6 8.2 80 Bone Springs Div 9350 12.2 16.3 75 10.6 15.0 71 Grave Springs 8550 8.1 9.0 90 6.6 10.2 65 Kirwin 9550 10.8 9.5 114 12.6 11.2 112 Marquette 8760 7.5 -M * 10.8 -M * Middle Powder 7760 11.1 11.6 96 7.8 11.3 69 Owl Creek 8975 4.9 5.7 86 5.4 5.8 93 Powder River Pass 9480 8.0 10.0 80 8.2 12.1 68 Shell Creek 9580 11.3 14.7 77 9.9 13.3 74 Timber Creek 7950 6.2 4.8 129 10.5 7.1 148 ----- ----- Basin Index (%) 90 81 SHOSHONE RIVER Blackwater 9780 21.7 22.3 97 24.2 19.9 122 Evening Star 9200 25.1 23.8 105 27.8 26.4 105 Marquette 8760 7.5 -M * 10.8 -M * Sylvan Road 7120 7.3 11.0 66 14.9 16.3 91 Younts Peak 8350 14.1 14.2 99 13.4 15.3 88 ----- ----- Basin Index (%) 96 103 POWDER RIVER Bear Trap Meadow 8200 7.3 5.1 143 6.6 8.2 80 Cloud Peak Reservoir 9860 11.6 14.3 81 12.4 12.8 97 Grave Springs 8550 8.1 9.0 90 6.6 10.2 65 Hansen Sawmill 8360 6.7 6.3 106 7.5 8.2 91 Middle Powder 7760 11.1 11.6 96 7.8 11.3 69 Powder River Pass 9480 8.0 10.0 80 8.2 12.1 68 Soldier Park 8720 5.0 -M * 7.5 -M * ----- ----- Basin Index (%) 94 78 TONGUE RIVER Big Goose 7990 7.7 9.2 84 8.4 10.9 77 Bone Springs Div 9350 12.2 16.3 75 10.6 15.0 71 Burgess Junction 7880 8.7 11.5 76 9.2 11.9 77 Dome Lake 8880 9.1 11.6 78 9.2 13.0 71 Little Goose 8870 8.9 -M * 10.4 -M * Sucker Creek 8880 9.7 11.6 84 10.2 13.9 73 Tie Creek 6870 3.0 5.5 55 8.6 11.1 77 ----- ----- Basin Index (%) 77 74 BELLE FOURCHE Cole Canyon 5910 4.1 5.7 72 9.2 9.0 102 ----- ----- Basin Index (%) 72 102 CHEYENNE RIVER BASIN Blind Park 6890 3.8 7.2 53 9.9 11.4 87 North Rapid Creek 6130 4.5 6.7 67 8.0 9.4 85 ----- ----- Basin Index (%) 60 86 UPPER N. PLATTE Arapaho Ridge 10960 24.4 20.2 121 24.2 21.6 112 Blackhall Mtn 9820 30.4 -M * 29.4 -M * Columbine 9160 24.8 23.2 107 25.5 24.8 103 Divide Peak 8880 19.6 19.6 100 22.2 20.8 107 Joe Wright 10120 18.2 20.5 89 25.4 25.0 102 Laprele Creek 8375 10.5 9.4 112 11.6 12.1 96 Med Bow 10500 34.3 -M * 30.2 -M * North French Creek 10130 26.3 28.5 92 24.9 26.0 96 Never Summer 10280 20.5 19.9 103 17.5 -M * Old Battle 10000 28.9 30.3 95 27.4 34.1 80 Rawah 9020 14.2 10.4 137 18.3 13.8 133 Sage Creek Basin 7850 16.2 12.6 129 12.4 14.1 88 Sand Lake 10050 26.9 28.1 96 25.5 24.0 106 South Brush Creek 8440 12.8 12.2 105 13.9 14.8 94 Tower 10500 38.7 44.8 86 35.3 38.6 91 Webber Springs 9250 22.1 23.0 96 24.4 26.0 94 Willow Creek Pass 9540 16.1 11.9 135 16.1 13.0 124 Zirkel 9340 28.2 26.3 107 29.9 27.6 108 ----- ----- Basin Index (%) 102 100 SWEETWATER Deer Park 9700 16.5 14.9 111 17.2 19.1 90 Larsen Creek 9000 9.7 12.0 81 12.9 -M * South Pass 9040 14.5 15.0 97 12.9 16.9 76 ----- ----- Basin Index (%) 97 84 LOWER N. PLATTE Casper Mtn. 7900 17.5 13.8 127 15.1 14.3 106 Laprele Creek 8375 10.5 9.4 112 11.6 12.1 96 Reno Hill 8400 16.4 13.6 121 18.6 14.8 126 Windy Peak 7900 10.1 7.8 129 11.0 10.2 108 ----- ----- Basin Index (%) 122 110 LARAMIE RIVER Brooklyn Lake 10240 24.4 20.7 118 23.0 20.4 113 Cinnabar Park 9574 19.9 20.4 98 22.3 23.4 95 Crow Creek 8330 9.9 7.0 141 14.4 10.4 138 Deadman Hill 10220 20.8 15.8 132 19.6 16.7 117 Rawah 9020 14.2 10.4 137 18.3 13.8 133 Roach 9700 17.9 16.0 112 19.6 18.6 105 ----- ----- Basin Index (%) 119 113 S. PLATTE Black Mountain 8920 13.9 -M * 16.8 -M * Crow Creek 8330 9.9 7.0 141 14.4 10.4 138 Deadman Hill 10220 20.8 15.8 132 19.6 16.7 117 ----- ----- Basin Index (%) 135 125 LITTLE SNAKE RIVER Battle Mountain 7440 12.5 10.4 120 15.2 14.6 104 Divide Peak 8880 19.6 19.6 100 22.2 20.8 107 Elk River 8700 18.8 18.9 99 18.2 19.5 93 Little Snake River 8915 24.1 23.8 101 30.4 28.9 105 Old Battle 10000 28.9 30.3 95 27.4 34.1 80 Sage Creek Basin 7850 16.2 12.6 129 12.4 14.1 88 Sandstone RS 8150 11.1 13.0 85 11.7 17.9 65 Whiskey Park 8950 27.8 26.5 105 26.9 27.2 99 ----- ----- Basin Index (%) 103 93 UPPER GREEN RIVER Big Sandy Opening 9080 11.2 12.4 90 11.5 12.8 90 Blind Bull Sum 8650 25.3 22.8 111 16.4 19.0 86 East Rim Divide 7930 10.7 10.1 106 10.8 11.4 95 Elkhart Park G.S. 9400 9.1 12.2 75 11.1 12.9 86 Gros Ventre Summit 8750 11.2 13.0 86 10.7 12.6 85 Gunsight Pass 9820 13.8 13.5 102 14.4 13.4 107 Kendall R.S. 7740 9.0 11.5 78 11.6 13.8 84 Loomis Park 8240 14.3 14.1 101 16.2 16.8 96 New Fork Lake 8340 9.1 10.3 88 11.2 10.5 107 Pocket Creek 9360 8.2 -M * 9.5 -M * Snider Basin 8060 14.5 12.3 118 14.0 13.9 101 Spring Creek Divide 9000 25.2 22.5 112 23.3 23.2 100 Triple Peak 8500 26.5 21.9 121 27.0 24.7 109 ----- ----- Basin Index (%) 102 96 LOWER GREEN RIVER Blacks Fork Jct 8870 11.9 -M * 12.3 -M * Buck Pasture 9700 14.5 -M * 17.3 -M * EF Blacks Fork GS 9360 10.3 -M * 10.7 -M * Hams Fork 7840 -M 10.9 * -M 11.1 * Hewinta 9519 12.2 10.9 112 13.7 13.6 101 Hickerson Park 9145 11.7 7.7 152 11.6 9.9 117 Hole-in-Rock 9150 10.8 7.0 154 11.5 9.4 122 Indian Creek 9425 23.3 24.2 96 18.6 22.0 85 Kelley R.S. 8180 14.1 15.0 94 15.4 17.6 88 Spirit Lk 10235 15.1 -M * 16.8 -M * Steel Creek Park 10200 16.9 15.5 109 18.7 16.0 117 ----- ----- Basin Index (%) 111 101 UPPER BEAR RIVER Bear River RS 8777 9.2 -M * 11.9 -M * Bug Lake 7950 18.6 18.2 102 19.2 18.9 102 Burts Miller Ranch 8000 5.6 -M * 5.9 -M * Chalk Creek #1 8993 20.9 23.8 88 22.4 24.5 91 Hayden Fork 9212 15.6 15.3 102 19.3 20.5 94 Kelley R.S. 8180 14.1 15.0 94 15.4 17.6 88 Lily Lake 9156 13.6 12.3 111 12.0 16.6 72 Monte Cristo 8960 28.2 26.9 105 27.5 25.3 109 Salt River Summit 7760 13.5 13.0 104 15.3 16.2 94 ----- ----- Basin Index (%) 100 94 ----------------------------------------------------------------------------- -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.