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 WEDNESDAY: MAY 25 , 2016
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
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WYOMING
SNAKE RIVER
Base Camp 7030 .1 .0 * 23.0 25.0 92
Black Bear 8170 19.1 31.2 61 40.4 45.3 89
Blind Bull Sum 8650 19.7 17.1 115 20.4 23.7 86
Cottonwood Creek 7670 2.6 1.4 186* 34.0 30.6 111
East Rim Divide 7930 .0 .0 * 14.5 14.5 100
Grand Targhee 9260 35.8 41.2 87 38.1 38.0 100
Granite Creek 6770 .0 .0 * 20.8 23.4 89
Grassy Lake 7265 3.6 12.2 30 40.9 42.6 96
Gros Ventre Summit 8750 .0 2.2 0 14.0 16.5 85
Gunsight Pass 9820 9.7 7.3 133 19.3 18.1 107
Lewis Lake Divide 7850 3.4 18.5 18 35.5 41.7 85
Phillips Bench 8200 6.6 15.2 43 31.0 33.4 93
Salt River Summit 7760 .0 .0 * 21.5 20.3 106
Snake River Station 6920 .1 .0 * 25.4 27.1 94
Spring Creek Divide 9000 20.9 16.7 125 30.7 28.6 107
Thumb Divide 7980 .1 .0 * 17.7 23.2 76
Togwotee Pass 9580 17.5 22.4 78 30.1 30.3 99
Two Ocean Plateau 9240 -M 27.7 * -M 33.5 *
Willow Creek 8380 6.7 11.1 60 41.4 41.6 100
Younts Peak 8350 .0 9.6 0 16.7 20.0 84
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Basin Index (%) 71 95
MADISON-GALLATIN
Black Bear 8170 19.1 31.2 61 40.4 45.3 89
Canyon 7870 .0 .4 0* 15.7 20.3 77
Madison Plateau 7750 3.7 12.0 31 26.8 32.2 83
West Yellowstone 6700 .0 .0 * 16.2 18.0 90
Whiskey Creek 6800 .0 2.4 0 20.0 24.9 80
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Basin Index (%) 50 85
YELLOWSTONE
Beartooth Lake 9360 14.7 20.4 72 21.0 24.6 85
Burnt Mtn 5880 .0 .0 * 17.5 20.0 88
Canyon 7870 .0 .4 0* 15.7 20.3 77
Cole Creek 7850 9.0 13.6 66 19.6 20.2 97
Evening Star 9200 17.7 21.8 81 32.6 34.1 96
Fisher Creek 9100 23.5 31.2 75 30.0 39.1 77
Northeast Entrance 7350 .0 .0 * 13.7 16.0 86
Parker Peak 9400 10.1 18.5 55 24.5 23.0 107
Sylvan Lake 8420 .1 12.6 1 27.7 28.3 98
Thumb Divide 7980 .1 .0 * 17.7 23.2 76
Two Ocean Plateau 9240 -M 27.7 * -M 33.5 *
White Mill 8700 13.6 20.9 65 24.9 29.5 84
Wolverine 7650 .0 .0 * 14.2 15.9 89
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Basin Index (%) 64 88
WIND RIVER
Burroughs Creek 8750 .0 -M * 18.2 -M *
Castle Creek 8400 .0 -M * 11.1 -M *
Cold Springs 9630 2.1 .0 * 17.7 14.8 120
Deer Park 9700 15.6 8.1 193 27.7 26.6 104
Hobbs Park 10100 20.9 10.7 195 27.6 19.8 139
Kirwin 9550 7.3 6.0 122 19.5 16.4 119
Little Warm 9370 .0 .4 0* 15.6 17.8 88
Owl Creek 8975 .0 .0 * 13.0 10.1 129
South Pass 9040 11.6 2.6 446 22.2 22.9 97
St. Lawrence Alt 8620 .0 .0 * 19.5 13.9 140
Togwotee Pass 9580 17.5 22.4 78 30.1 30.3 99
Townsend Creek 8700 6.2 .0 * 24.3 17.6 138
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Basin Index (%) 162* 114
BIGHORN BASIN
Bald Mtn. 9380 11.2 17.2 65 16.9 22.8 74
Bear Trap Meadow 8200 .1 .0 * 11.8 13.3 89
Bone Springs Div 9350 7.7 12.6 61 16.2 21.6 75
Grave Springs 8550 .4 .0 * 12.1 15.6 78
Kirwin 9550 7.3 6.0 122 19.5 16.4 119
Marquette 8760 .1 -M * 16.4 -M *
Middle Powder 7760 1.2 .8 150* 14.2 16.8 85
Owl Creek 8975 .0 .0 * 13.0 10.1 129
Powder River Pass 9480 .2 2.0 10 12.7 18.1 70
Shell Creek 9580 8.8 13.7 64 14.6 19.2 76
Timber Creek 7950 .0 .0 * 17.9 12.8 140
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Basin Index (%) 71* 89
SHOSHONE RIVER
Blackwater 9780 20.4 23.1 88 29.2 26.7 109
Evening Star 9200 17.7 21.8 81 32.6 34.1 96
Marquette 8760 .1 -M * 16.4 -M *
Sylvan Road 7120 .0 .0 * 17.8 20.8 86
Younts Peak 8350 .0 9.6 0 16.7 20.0 84
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Basin Index (%) 70 95
POWDER RIVER
Bear Trap Meadow 8200 .1 .0 * 11.8 13.3 89
Cloud Peak Reservoir 9860 8.7 12.0 72 19.4 20.4 95
Grave Springs 8550 .4 .0 * 12.1 15.6 78
Hansen Sawmill 8360 .1 .0 * 13.6 13.6 100
Middle Powder 7760 1.2 .8 150* 14.2 16.8 85
Powder River Pass 9480 .2 2.0 10 12.7 18.1 70
Soldier Park 8720 .1 -M * 13.2 -M *
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Basin Index (%) 72* 86
TONGUE RIVER
Big Goose 7990 1.3 .9 144* 15.4 17.8 87
Bone Springs Div 9350 7.7 12.6 61 16.2 21.6 75
Burgess Junction 7880 2.6 4.7 55 15.4 17.6 88
Dome Lake 8880 3.1 2.4 129 17.3 19.7 88
Little Goose 8870 3.9 -M * 18.1 -M *
Sucker Creek 8880 2.2 5.5 40 17.0 20.9 81
Tie Creek 6870 -M .0 * 14.2 18.1 78
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Basin Index (%) 65 83
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * 12.2 15.6 78
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Basin Index (%) * 78
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 13.2 17.6 75
North Rapid Creek 6130 .0 .0 * 10.4 15.1 69
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Basin Index (%) * 72
UPPER N. PLATTE
Arapaho Ridge 10960 25.9 13.8 188 32.7 28.9 113
Blackhall Mtn 9820 31.7 -M * 41.0 -M *
Columbine 9160 4.8 .0 * 33.3 30.9 108
Divide Peak 8880 9.1 1.3 700* 35.3 26.8 132
Joe Wright 10120 -M 18.5 * -M 33.4 *
Laprele Creek 8375 .0 .0 * 18.0 17.4 103
Med Bow 10500 39.1 -M * 43.1 -M *
North French Creek 10130 29.2 26.2 111 37.8 34.3 110
Never Summer 10280 19.7 18.0 109 23.2 -M *
Old Battle 10000 37.2 30.0 124 42.1 42.7 99
Rawah 9020 .4 .0 * 25.3 19.1 132
Sage Creek Basin 7850 -M .0 * 18.4 17.7 104
Sand Lake 10050 31.6 25.2 125 37.2 32.4 115
South Brush Creek 8440 .0 .0 * 22.9 20.5 112
Tower 10500 45.5 44.8 102 50.1 48.4 104
Webber Springs 9250 16.8 6.5 258 35.9 32.4 111
Willow Creek Pass 9540 10.4 5.8 179 21.4 17.8 120
Zirkel 9340 -M 1.9 * 38.9 33.7 115
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Basin Index (%) 134* 111
SWEETWATER
Deer Park 9700 15.6 8.1 193 27.7 26.6 104
Larsen Creek 9000 .2 2.1 10 19.1 -M *
South Pass 9040 11.6 2.6 446 22.2 22.9 97
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Basin Index (%) 214 101
LOWER N. PLATTE
Casper Mtn. 7900 7.0 1.1 636* 23.4 21.0 111
Laprele Creek 8375 .0 .0 * 18.0 17.4 103
Reno Hill 8400 7.7 .0 * 26.2 22.0 119
Windy Peak 7900 .0 .0 * 18.7 15.4 121
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Basin Index (%) 1336* 114
LARAMIE RIVER
Brooklyn Lake 10240 19.1 11.9 161 32.1 27.7 116
Cinnabar Park 9574 18.5 7.5 247 32.1 29.9 107
Crow Creek 8330 .3 .0 * -M 15.6 *
Deadman Hill 10220 19.1 13.3 144 27.0 23.4 115
Rawah 9020 .4 .0 * 25.3 19.1 132
Roach 9700 15.3 7.4 207 31.2 25.1 124
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Basin Index (%) 181 118
S. PLATTE
Black Mountain 8920 .5 -M * 23.9 -M *
Crow Creek 8330 .3 .0 * -M 15.6 *
Deadman Hill 10220 19.1 13.3 144 27.0 23.4 115
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Basin Index (%) 146* 115*
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 .0 * 24.7 18.9 131
Divide Peak 8880 9.1 1.3 700* 35.3 26.8 132
Elk River 8700 .3 .0 * 24.4 24.9 98
Little Snake River 8915 17.3 7.8 222 43.5 35.7 122
Old Battle 10000 37.2 30.0 124 42.1 42.7 99
Sage Creek Basin 7850 -M .0 * 18.4 17.7 104
Sandstone RS 8150 -M .0 * 21.2 22.8 93
Whiskey Park 8950 30.3 16.1 188 39.8 34.2 116
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Basin Index (%) 171* 111
UPPER GREEN RIVER
Big Sandy Opening 9080 2.6 .0 * 18.6 17.3 108
Blind Bull Sum 8650 19.7 17.1 115 20.4 23.7 86
East Rim Divide 7930 .0 .0 * 14.5 14.5 100
Elkhart Park G.S. 9400 1.0 3.2 31 17.2 17.2 100
Gros Ventre Summit 8750 .0 2.2 0 14.0 16.5 85
Gunsight Pass 9820 9.7 7.3 133 19.3 18.1 107
Kendall R.S. 7740 -M .0 * 16.0 17.1 94
Loomis Park 8240 .1 .0 * 20.4 21.0 97
New Fork Lake 8340 .1 .0 * 15.4 13.9 111
Pocket Creek 9360 3.3 -M * 15.9 -M *
Snider Basin 8060 .0 .0 * 19.9 17.1 116
Spring Creek Divide 9000 20.9 16.7 125 30.7 28.6 107
Triple Peak 8500 6.4 3.5 183 33.1 30.8 107
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Basin Index (%) 121* 102
LOWER GREEN RIVER
Blacks Fork Jct 8870 .0 -M * 18.4 -M *
Buck Pasture 9700 5.0 -M * 24.7 -M *
EF Blacks Fork GS 9360 .0 -M * 20.3 -M *
Hams Fork 7840 .0 .0 * 16.9 14.8 114
Hewinta 9519 .5 .0 * 20.3 18.1 112
Hickerson Park 9145 .1 .0 * 20.5 13.9 147
Hole-in-Rock 9150 .0 .0 * 20.4 13.5 151
Indian Creek 9425 16.0 14.9 107 25.7 27.5 93
Kelley R.S. 8180 .0 .0 * 23.1 22.3 104
Spirit Lk 10235 16.2 -M * 28.1 -M *
Steel Creek Park 10200 20.5 12.2 168 28.5 21.4 133
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Basin Index (%) 137* 118
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 18.6 -M *
Bug Lake 7950 .3 .0 * 24.5 23.9 103
Burts Miller Ranch 8000 .0 -M * 9.8 -M *
Chalk Creek #1 8993 9.1 11.1 82 29.5 31.4 94
Hayden Fork 9212 .0 .0 * 27.3 26.3 104
Kelley R.S. 8180 .0 .0 * 23.1 22.3 104
Lily Lake 9156 .0 .0 * 21.7 21.8 100
Monte Cristo 8960 14.2 9.6 148 35.0 32.1 109
Salt River Summit 7760 .0 .0 * 21.5 20.3 106
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Basin Index (%) 114* 103
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-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.
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-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.
