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: MAY 8 , 2022
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Median Med
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WYOMING
SNAKE RIVER
Base Camp 7060 7.5 6.6 114 20.0 23.4 85
Blind Bull Sum 8650 22.8 24.0 95 16.6 19.8 84
Cottonwood Creek 7670 15.2 15.4 99 28.6 28.8 99
East Rim Divide 7930 .0 3.2 0 12.4 13.0 95
Grand Targhee 9260 35.4 46.8 76 31.5 36.6 86
Granite Creek 6770 4.0 6.8 59 16.2 21.2 76
Grassy Lake 7265 20.8 24.1 86 35.0 39.0 90
Gros Ventre Summit 8750 8.7 10.6 82 12.9 14.9 87
Gunsight Pass 9820 13.7 12.4 110 16.6 16.8 99
Lewis Lake Divide 7850 21.4 29.4 73 35.1 37.6 93
Loomis Park 8240 6.9 8.7 79 17.7 19.4 91
Phillips Bench 8200 20.7 24.5 84 27.2 29.0 94
Salt River Summit 7640 7.6 5.7 133 18.3 18.4 99
Snake River Station 6920 3.2 4.1 78 20.6 25.2 82
Somsen Ranch 6800 .9 .0 * -M 18.8 *
Spring Creek Divide 9000 22.1 24.2 91 26.0 26.4 98
Thumb Divide 7980 12.1 9.0 134 20.7 21.7 95
Togwotee Pass 9580 22.6 25.4 89 25.1 28.4 88
Triple Peak 8500 18.3 17.1 107 29.2 29.2 100
Two Ocean Plateau 9240 30.4 32.8 93 29.1 30.4 96
Willow Creek 8080 24.1 25.1 96 37.4 38.7 97
Younts Peak 8350 10.1 13.2 77 12.6 17.6 72
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Basin Index (%) 89 91
MADISON HEADWATERS IN WYOMING
Black Bear 8170 30.4 41.0 74 34.2 41.4 83
Canyon 7870 9.8 -M * 15.0 -M *
Madison Plateau 7750 17.4 22.4 78 24.2 28.2 86
West Yellowstone 6700 .1 .0 * 15.2 16.2 94
Whiskey Creek 6800 10.3 11.2 92 -M 22.8 *
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Basin Index (%) 78 86
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 20.2 24.8 81 19.7 24.0 82
Canyon 7870 9.8 -M * 15.0 -M *
Evening Star 9200 28.1 27.1 104 28.0 32.2 87
Fisher Creek 9100 32.3 35.9 90 35.6 38.3 93
Monument Peak 8850 19.5 21.8 89 24.8 26.4 94
Northeast Entrance 7350 .1 .0 * 13.5 15.0 90
Parker Peak 9400 22.9 24.3 94 23.3 23.3 100
Sylvan Lake 8420 14.7 18.2 81 24.7 27.2 91
Thumb Divide 7980 12.1 9.0 134 20.7 21.7 95
Two Ocean Plateau 9240 30.4 32.8 93 29.1 30.4 96
White Mill 8700 23.1 26.8 86 23.5 25.8 91
Wolverine 7650 3.3 .6 550* 15.0 14.2 106
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Basin Index (%) 93 93
WIND RIVER
Burroughs Creek 8750 7.2 -M * 16.4 -M *
Castle Creek 8400 .0 .0 * -M 10.6 *
Cold Springs 9630 6.2 2.3 270 15.4 11.8 131
Deer Park 9700 14.6 13.6 107 20.8 22.3 93
Hobbs Park 10100 19.0 15.8 120 20.8 17.4 120
Kirwin 9550 13.3 11.8 113 16.5 15.3 108
Little Warm 9370 11.4 7.7 148 16.7 14.4 116
South Pass 9040 12.2 12.2 100 18.0 19.2 94
St. Lawrence Alt 8620 .0 -M * 11.9 -M *
Togwotee Pass 9580 22.6 25.4 89 25.1 28.4 88
Townsend Creek 8700 9.9 6.8 146 16.6 14.4 115
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Basin Index (%) 114 105
BIGHORN BASIN
Bald Mtn. 9380 18.8 20.6 91 17.3 19.6 88
Bear Trap Meadow 8200 .2 .4 50* 12.2 11.6 105
Bone Springs Div 9350 19.0 17.6 108 16.3 18.8 87
Grave Springs 8550 8.7 6.8 128 13.3 12.6 106
Kirwin 9550 13.3 11.8 113 16.5 15.3 108
Marquette 8760 5.4 7.0 77 12.0 12.8 94
Middle Powder 7760 10.6 9.2 115 13.3 12.8 104
Owl Creek 8975 .2 .8 25 10.0 8.8 114
Powder River Pass 9480 8.4 9.1 92 11.9 16.2 73
Shell Creek 9580 -M 17.0 * -M 17.1 *
Timber Creek 7950 .1 1.8 6 11.3 10.8 105
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Basin Index (%) 100 96
SHOSHONE RIVER
Blackwater 9780 24.2 26.6 91 25.9 26.4 98
Evening Star 9200 28.1 27.1 104 28.0 32.2 87
Marquette 8760 5.4 7.0 77 12.0 12.8 94
Sylvan Lake 8420 14.7 18.2 81 24.7 27.2 91
Sylvan Road 7120 .0 .2 0* -M 18.5 *
Younts Peak 8350 10.1 13.2 77 12.6 17.6 72
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Basin Index (%) 89 89
POWDER RIVER
Bear Trap Meadow 8200 .2 .4 50* 12.2 11.6 105
Cloud Peak Reservoir 9860 16.3 16.1 101 18.7 18.2 103
Grave Springs 8550 8.7 6.8 128 13.3 12.6 106
Hansen Sawmill 8360 2.8 2.3 122 12.4 11.7 106
Middle Powder 7760 10.6 9.2 115 13.3 12.8 104
Powder River Pass 9480 8.4 9.1 92 11.9 16.2 73
Soldier Park 8720 2.8 1.2 233 12.9 11.9 108
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Basin Index (%) 110 100
TONGUE RIVER
Big Goose 7990 8.5 8.2 104 15.2 14.0 109
Bone Springs Div 9350 19.0 17.6 108 16.3 18.8 87
Burgess Junction 7880 13.3 11.3 118 17.2 15.6 110
Dome Lake 8880 14.0 11.1 126 17.8 17.2 103
Little Goose 8870 10.5 10.0 105 18.2 16.2 112
Sucker Creek 8880 14.1 12.2 116 21.1 18.6 113
Tie Creek 6870 1.5 1.2 125 16.4 14.6 112
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Basin Index (%) 113 106
BELLE FOURCHE
Blind Park 6890 .0 .0 * 13.4 13.9 96
Cole Canyon 5910 .0 .0 * 13.6 13.1 104
North Rapid Creek 6130 1.4 .0 * 8.6 11.6 74
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Basin Index (%) * 92
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 13.4 13.9 96
North Rapid Creek 6130 1.4 .0 * 8.6 11.6 74
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Basin Index (%) * 86
UPPER N. PLATTE
Arapaho Ridge 10976 20.6 22.1 93 24.4 25.8 95
Blackhall Mtn 9839 28.8 32.8 88 34.3 36.9 93
Cinnabar Park 9707 13.7 17.3 79 23.8 27.5 87
Columbine 9167 14.7 14.0 105 29.1 29.8 98
Divide Peak 8730 8.5 13.2 64 23.1 25.3 91
Joe Wright 10158 24.5 22.2 110 34.7 31.4 111
Laprele Creek 8390 1.9 3.0 63 14.4 15.5 93
Med Bow 10512 36.6 -M * 35.3 -M *
Never Summer 10323 24.7 22.2 111 21.1 20.8 101
North French Creek 10153 27.6 31.6 87 30.9 34.0 91
Old Battle 9860 31.2 35.4 88 35.3 39.7 89
Rawah 9069 8.6 4.2 205 19.8 20.1 99
Sage Creek Basin 7850 -M .0 * 12.6 15.3 82
Sand Lake 10098 29.7 31.9 93 30.8 30.4 101
South Brush Creek 8495 1.0 2.6 38 15.3 17.2 89
Tower 10620 44.6 47.2 94 47.2 46.1 102
Webber Springs 9260 17.5 19.6 89 28.9 30.6 94
Whiskey Park 9020 26.0 27.4 95 33.6 34.4 98
Willow Creek Pass 9523 14.2 14.7 97 17.5 16.8 104
Zirkel 9338 15.0 20.4 74 36.0 35.4 102
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Basin Index (%) 92 96
SWEETWATER
Deer Park 9700 14.6 13.6 107 20.8 22.3 93
Larsen Creek 9000 -M .2 * 15.1 16.4 92
South Pass 9040 12.2 12.2 100 18.0 19.2 94
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Basin Index (%) 104 93
LOWER N. PLATTE
Casper Mtn. 7920 9.7 10.4 93 19.1 18.0 106
Laprele Creek 8390 1.9 3.0 63 14.4 15.5 93
Reno Hill 8430 12.6 12.9 98 21.8 20.9 104
Windy Peak 7915 .8 1.6 50 12.7 13.9 91
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Basin Index (%) 90 100
LARAMIE RIVER
Brooklyn Lake 10250 17.8 21.8 82 26.4 26.0 102
Cinnabar Park 9707 13.7 17.3 79 23.8 27.5 87
Crow Creek 8335 .0 .0 * 11.8 13.6 87
Deadman Hill 10239 21.3 19.4 110 22.5 22.1 102
Rawah 9069 8.6 4.2 205 19.8 20.1 99
Roach 9740 14.5 15.7 92 24.2 22.2 109
Windy Peak 7915 .8 1.6 50 12.7 13.9 91
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Basin Index (%) 96 97
S. PLATTE
Crow Creek 8335 .0 .0 * 11.8 13.6 87
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Basin Index (%) * 87
LITTLE SNAKE RIVER
Battle Mountain 7498 .0 .0 * 18.0 17.8 101
Divide Peak 8730 8.5 13.2 64 23.1 25.3 91
Elk River 8739 9.9 8.5 116 25.4 23.0 110
Elkhead Divide 8800 12.8 -M * 24.8 -M *
Little Snake River 8928 18.0 20.6 87 35.3 37.6 94
Old Battle 9860 31.2 35.4 88 35.3 39.7 89
Sage Creek Basin 7850 -M .0 * 12.6 15.3 82
Sandstone RS 8152 .6 3.2 19 18.0 20.4 88
Whiskey Park 9020 26.0 27.4 95 33.6 34.4 98
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Basin Index (%) 87 94
UPPER GREEN RIVER
Big Sandy Opening 9080 10.0 9.6 104 15.1 15.5 97
Blind Bull Sum 8650 22.8 24.0 95 16.6 19.8 84
East Rim Divide 7930 .0 3.2 0 12.4 13.0 95
Elkhart Park G.S. 9400 6.9 9.7 71 11.8 14.7 80
Gros Ventre Summit 8750 8.7 10.6 82 12.9 14.9 87
Gunsight Pass 9820 13.7 12.4 110 16.6 16.8 99
Indian Creek 9425 21.0 20.9 100 22.3 22.4 100
Kendall R.S. 7740 .1 .2 50* 15.6 15.1 103
Larsen Creek 9000 -M .2 * 15.1 16.4 92
Loomis Park 8240 6.9 8.7 79 17.7 19.4 91
New Fork Lake 8340 1.8 3.4 53 11.0 12.6 87
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 1.5 5.6 27 17.6 15.7 112
Spring Creek Divide 9000 22.1 24.2 91 26.0 26.4 98
Triple Peak 8500 18.3 17.1 107 29.2 29.2 100
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Basin Index (%) 89 95
LOWER GREEN RIVER
Blacks Fork Jct 8869 .8 .2 400* 14.8 14.6 101
Buck Pasture 9632 6.5 -M * 19.5 -M *
EF Blacks Fork GS 9360 .0 5.0 0 14.4 14.2 101
Hams Fork 7840 .0 .2 0* 13.1 12.9 102
Henrys Fork 10182 -M -M * 13.8 -M *
Hewinta 9500 .0 3.0 0 17.2 16.4 105
Hickerson Park 9122 .0 1.0 0 11.9 12.6 94
Hole-in-Rock 9168 .0 .5 0* 12.2 12.6 97
Indian Creek 9425 21.0 20.9 100 22.3 22.4 100
Kelley R.S. 8180 7.9 8.5 93 18.7 18.6 101
Spirit Lk 10235 3.2 11.7 27 18.0 20.0 90
Steel Creek Park 10158 14.0 17.2 81 20.1 19.8 102
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Basin Index (%) 69 99
UPPER BEAR RIVER
Bear River RS 8777 .0 .0 * 15.9 14.0 114
Bug Lake 7987 9.2 12.6 73 21.2 19.5 109
Burts Miller Ranch 8000 .0 .0 * 9.5 8.8 108
Chalk Creek #1 9171 16.6 20.8 80 26.4 26.4 100
Giveout 6930 .1 .0 * 14.0 14.6 96
Hayden Fork 9130 .0 5.5 0 24.5 23.6 104
Kelley R.S. 8180 7.9 8.5 93 18.7 18.6 101
Lily Lake 9133 3.0 7.2 42 18.2 18.6 98
Monte Cristo 8932 17.0 20.6 83 28.5 28.2 101
Salt River Summit 7640 7.6 5.7 133 18.3 18.4 99
Spring Creek Divide 9000 22.1 24.2 91 26.0 26.4 98
Trial Lake 9992 15.4 21.2 73 25.1 25.4 99
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Basin Index (%) 78 102
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Median (or Average) 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 (or Average) represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median (or Average) value for those sites on this day.
The TOTAL PRECIPITATION Percent of Median (or Average) represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Median (or Average) value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1991-2020.
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 or average for the day is less than 10% of the maximum
median or average value for the year.
* Basin - More than half of the stations for a basin with medians (or averages) report missing or invalid data
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians or averages 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.
