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 29 , 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 .0 .0 * 22.0 25.2 87
Blind Bull Sum 8650 22.4 17.8 126 18.2 22.8 80
Cottonwood Creek 7670 2.3 1.0 230* 30.8 31.8 97
East Rim Divide 7930 .1 .0 * 13.5 14.8 91
Grand Targhee 9260 30.2 40.6 74 34.6 40.2 86
Granite Creek 6770 .0 .0 * 17.9 23.8 75
Grassy Lake 7265 9.3 8.4 111 37.0 42.9 86
Gros Ventre Summit 8750 1.3 .0 * 14.5 16.1 90
Gunsight Pass 9820 9.0 7.6 118 18.4 18.1 102
Lewis Lake Divide 7850 9.0 14.6 62 38.2 40.8 94
Loomis Park 8240 .0 .0 * 19.1 21.5 89
Phillips Bench 8200 9.9 11.0 90 29.0 31.6 92
Salt River Summit 7640 .0 .0 * 19.5 20.4 96
Snake River Station 6920 .1 .0 * 22.2 28.4 78
Somsen Ranch 6800 .0 .0 * -M 21.0 *
Spring Creek Divide 9000 16.7 16.6 101 28.3 29.3 97
Thumb Divide 7980 .6 .0 * 23.2 23.2 100
Togwotee Pass 9580 17.6 20.8 85 27.8 30.8 90
Triple Peak 8500 8.4 3.4 247 32.1 32.0 100
Two Ocean Plateau 9240 27.6 27.6 100 32.2 33.1 97
Willow Creek 8080 10.8 8.0 135 39.9 41.4 96
Younts Peak 8350 .0 1.1 0* 16.8 19.8 85
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Basin Index (%) 98 91
MADISON HEADWATERS IN WYOMING
Black Bear 8170 23.2 29.0 80 38.0 45.4 84
Canyon 7870 1.6 -M * 17.8 -M *
Madison Plateau 7750 8.3 10.2 81 27.4 31.7 86
West Yellowstone 6700 .0 .0 * 17.4 18.2 96
Whiskey Creek 6800 .6 .0 * -M 26.0 *
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Basin Index (%) 82 87
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 19.2 20.0 96 22.4 26.9 83
Canyon 7870 1.6 -M * 17.8 -M *
Evening Star 9200 25.2 21.8 116 31.7 35.6 89
Fisher Creek 9100 33.1 31.3 106 40.4 42.0 96
Monument Peak 8850 16.4 15.7 104 29.2 28.1 104
Northeast Entrance 7350 .1 .0 * 16.5 17.2 96
Parker Peak 9400 21.1 15.8 134 27.5 25.2 109
Sylvan Lake 8420 7.4 8.2 90 28.5 29.8 96
Thumb Divide 7980 .6 .0 * 23.2 23.2 100
Two Ocean Plateau 9240 27.6 27.6 100 32.2 33.1 97
White Mill 8700 -M 19.4 * -M 28.7 *
Wolverine 7650 .0 .0 * 17.2 16.0 108
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Basin Index (%) 107 97
WIND RIVER
Burroughs Creek 8750 .9 -M * 18.6 -M *
Castle Creek 8400 .0 .0 * 11.4 12.9 88
Cold Springs 9630 .1 .0 * 17.1 15.3 112
Deer Park 9700 6.9 6.0 115 22.7 24.8 92
Hobbs Park 10100 14.5 8.2 177 23.2 20.3 114
Kirwin 9550 5.7 3.6 158 19.0 18.2 104
Little Warm 9370 1.7 .0 * 18.5 16.2 114
South Pass 9040 1.1 2.0 55 19.4 21.1 92
St. Lawrence Alt 8620 .0 -M * 13.3 -M *
Togwotee Pass 9580 17.6 20.8 85 27.8 30.8 90
Townsend Creek 8700 .0 .0 * 18.3 18.0 102
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Basin Index (%) 117 100
BIGHORN BASIN
Bald Mtn. 9380 15.8 15.0 105 20.0 21.8 92
Bear Trap Meadow 8200 .1 .0 * 14.0 13.4 104
Bone Springs Div 9350 12.9 10.4 124 18.0 20.8 87
Grave Springs 8550 .1 .0 * 14.5 14.4 101
Kirwin 9550 5.7 3.6 158 19.0 18.2 104
Marquette 8760 .1 .1 100* 14.0 16.5 85
Middle Powder 7760 .2 .0 * 14.7 15.4 95
Owl Creek 8975 .2 .0 * 11.5 11.2 103
Powder River Pass 9480 1.0 .0 * 13.5 18.4 73
Shell Creek 9580 12.7 10.2 125 19.3 19.2 101
Timber Creek 7950 .1 .0 * 13.1 13.8 95
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Basin Index (%) 124* 94
SHOSHONE RIVER
Blackwater 9780 25.0 22.1 113 30.7 29.6 104
Evening Star 9200 25.2 21.8 116 31.7 35.6 89
Marquette 8760 .1 .1 100* 14.0 16.5 85
Sylvan Lake 8420 7.4 8.2 90 28.5 29.8 96
Sylvan Road 7120 .1 .0 * -M 21.0 *
Younts Peak 8350 .0 1.1 0* 16.8 19.8 85
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Basin Index (%) 108 93
POWDER RIVER
Bear Trap Meadow 8200 .1 .0 * 14.0 13.4 104
Cloud Peak Reservoir 9860 11.2 8.6 130 21.1 21.8 97
Grave Springs 8550 .1 .0 * 14.5 14.4 101
Hansen Sawmill 8360 .1 .0 * 13.9 14.8 94
Middle Powder 7760 .2 .0 * 14.7 15.4 95
Powder River Pass 9480 1.0 .0 * 13.5 18.4 73
Soldier Park 8720 .1 .2 50* 14.2 15.8 90
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Basin Index (%) 145* 93
TONGUE RIVER
Big Goose 7990 .6 .0 * 16.3 19.2 85
Bone Springs Div 9350 12.9 10.4 124 18.0 20.8 87
Burgess Junction 7880 7.6 .6 1267* 19.2 17.9 107
Dome Lake 8880 6.1 .1 6100* 19.7 20.7 95
Little Goose 8870 4.2 3.7 114 20.2 20.7 98
Sucker Creek 8880 7.7 2.0 385 23.4 21.6 108
Tie Creek 6870 .0 .0 * 18.1 18.9 96
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Basin Index (%) 233* 96
BELLE FOURCHE
Blind Park 6890 .0 .0 * 16.2 16.0 101
Cole Canyon 5910 .0 .0 * 17.1 15.1 113
North Rapid Creek 6130 .3 .0 * 9.9 14.2 70
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Basin Index (%) * 95
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 16.2 16.0 101
North Rapid Creek 6130 .3 .0 * 9.9 14.2 70
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Basin Index (%) * 86
UPPER N. PLATTE
Arapaho Ridge 10976 9.0 12.4 73 26.4 28.6 92
Blackhall Mtn 9839 14.4 27.8 52 36.7 41.2 89
Cinnabar Park 9707 .7 5.9 12 25.3 29.4 86
Columbine 9167 -M .0 * 30.4 31.8 96
Divide Peak 8730 .0 .0 * 24.9 26.8 93
Joe Wright 10158 17.3 14.4 120 38.4 34.5 111
Laprele Creek 8390 .0 .0 * 15.8 17.6 90
Med Bow 10512 28.6 -M * 37.9 -M *
Never Summer 10323 20.2 17.1 118 23.7 23.6 100
North French Creek 10153 19.0 22.9 83 33.4 36.9 91
Old Battle 9860 24.3 27.9 87 37.6 42.4 89
Rawah 9069 .0 .0 * 21.9 21.0 104
Sage Creek Basin 7850 -M .0 * 13.8 16.9 82
Sand Lake 10098 24.4 24.2 101 33.5 33.1 101
South Brush Creek 8495 .3 .0 * 17.0 19.7 86
Tower 10620 32.2 37.4 86 49.7 50.2 99
Webber Springs 9260 4.5 3.2 141 31.0 32.3 96
Whiskey Park 9020 -M 10.6 * 35.4 36.0 98
Willow Creek Pass 9523 2.0 3.2 62 19.6 18.3 107
Zirkel 9338 .0 .0 * 37.9 36.4 104
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Basin Index (%) 86 96
SWEETWATER
Deer Park 9700 6.9 6.0 115 22.7 24.8 92
Larsen Creek 9000 .0 .0 * 16.2 17.2 94
South Pass 9040 1.1 2.0 55 19.4 21.1 92
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Basin Index (%) 100 92
LOWER N. PLATTE
Casper Mtn. 7920 .0 .0 * 20.1 20.8 97
Laprele Creek 8390 .0 .0 * 15.8 17.6 90
Reno Hill 8430 2.0 .0 * 23.5 22.6 104
Windy Peak 7915 .1 .0 * 14.0 16.5 85
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Basin Index (%) * 95
LARAMIE RIVER
Brooklyn Lake 10250 5.0 8.8 57 28.4 28.6 99
Cinnabar Park 9707 .7 5.9 12 25.3 29.4 86
Crow Creek 8335 .0 .0 * 13.6 16.0 85
Deadman Hill 10239 7.0 10.2 69 25.0 24.2 103
Rawah 9069 .0 .0 * 21.9 21.0 104
Roach 9740 .9 2.6 35 26.0 24.6 106
Windy Peak 7915 .1 .0 * 14.0 16.5 85
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Basin Index (%) 50 96
S. PLATTE
Crow Creek 8335 .0 .0 * 13.6 16.0 85
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Basin Index (%) * 85
LITTLE SNAKE RIVER
Battle Mountain 7498 .1 .0 * 19.3 19.8 97
Divide Peak 8730 .0 .0 * 24.9 26.8 93
Elk River 8739 .0 .0 * 26.6 24.4 109
Elkhead Divide 8800 .0 -M * 25.9 -M *
Little Snake River 8928 1.3 4.8 27 37.2 40.4 92
Old Battle 9860 24.3 27.9 87 37.6 42.4 89
Sage Creek Basin 7850 -M .0 * 13.8 16.9 82
Sandstone RS 8152 .0 .0 * 19.3 22.0 88
Whiskey Park 9020 -M 10.6 * 35.4 36.0 98
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Basin Index (%) 79* 94
UPPER GREEN RIVER
Big Sandy Opening 9080 .0 .0 * 16.0 17.4 92
Blind Bull Sum 8650 22.4 17.8 126 18.2 22.8 80
East Rim Divide 7930 .1 .0 * 13.5 14.8 91
Elkhart Park G.S. 9400 .1 .2 50* 12.8 17.4 74
Gros Ventre Summit 8750 1.3 .0 * 14.5 16.1 90
Gunsight Pass 9820 9.0 7.6 118 18.4 18.1 102
Indian Creek 9425 11.6 13.0 89 23.8 25.8 92
Kendall R.S. 7740 .0 .0 * 16.9 17.0 99
Larsen Creek 9000 .0 .0 * 16.2 17.2 94
Loomis Park 8240 .0 .0 * 19.1 21.5 89
New Fork Lake 8340 .0 .0 * 12.1 14.8 82
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 .0 .0 * 19.0 17.9 106
Spring Creek Divide 9000 16.7 16.6 101 28.3 29.3 97
Triple Peak 8500 8.4 3.4 247 32.1 32.0 100
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Basin Index (%) 119* 92
LOWER GREEN RIVER
Blacks Fork Jct 8869 .4 .0 * 15.6 15.7 99
Buck Pasture 9632 .0 -M * 21.0 -M *
EF Blacks Fork GS 9360 .0 .0 * 18.4 16.8 110
Hams Fork 7840 .0 .0 * 13.9 14.8 94
Henrys Fork 10182 -M -M * 14.6 -M *
Hewinta 9500 .0 .0 * 18.2 17.8 102
Hickerson Park 9122 .0 .0 * 12.9 14.4 90
Hole-in-Rock 9168 .0 .0 * 13.2 13.9 95
Indian Creek 9425 11.6 13.0 89 23.8 25.8 92
Kelley R.S. 8180 -M .0 * 19.9 22.1 90
Spirit Lk 10235 .0 .0 * 16.8 20.6 82
Steel Creek Park 10158 3.7 10.0 37 21.3 21.1 101
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Basin Index (%) 68* 95
UPPER BEAR RIVER
Bear River RS 8777 .0 .0 * 16.6 15.2 109
Bug Lake 7987 .2 .0 * 22.3 21.8 102
Burts Miller Ranch 8000 -M .0 * 10.0 9.8 102
Chalk Creek #1 9171 .6 4.4 14 27.7 29.8 93
Giveout 6930 .2 .0 * 15.1 16.8 90
Hayden Fork 9130 .0 .0 * 25.5 25.5 100
Kelley R.S. 8180 -M .0 * 19.9 22.1 90
Lily Lake 9133 -M .0 * -M 21.2 *
Monte Cristo 8932 1.9 7.0 27 29.7 30.6 97
Salt River Summit 7640 .0 .0 * 19.5 20.4 96
Spring Creek Divide 9000 16.7 16.6 101 28.3 29.3 97
Trial Lake 9992 .1 7.3 1 26.9 27.6 97
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Basin Index (%) 56* 97
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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.
