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 MONDAY: JUNE 12 , 2023
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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 -M .0 * 23.8 26.6 89
Blind Bull Sum 8650 2.0 6.4 31 23.3 24.2 96
Cottonwood Creek 7670 .1 .0 * 37.0 33.8 109
East Rim Divide 7930 -M .0 * 16.3 15.7 104
Grand Targhee 9260 19.5 24.1 81 36.6 43.7 84
Granite Creek 6770 -M .0 * 19.8 25.5 78
Grassy Lake 7265 -M .0 * 46.8 44.9 104
Gros Ventre Summit 8750 .0 .0 * 15.1 17.5 86
Gunsight Pass 9820 .2 .0 * 19.4 19.2 101
Lewis Lake Divide 7850 -M .0 * 44.7 42.6 105
Loomis Park 8240 .2 .0 * 20.8 22.8 91
Phillips Bench 8200 .2 .4 50* 35.1 33.8 104
Salt River Summit 7640 -M .0 * 25.6 21.5 119
Snake River Station 6920 .0 .0 * 27.1 29.4 92
Somsen Ranch 6800 -M .0 * 25.7 22.0 117
Spring Creek Divide 9000 7.4 1.7 435* 37.4 30.8 121
Thumb Divide 7980 .1 .0 * 23.3 24.4 95
Togwotee Pass 9580 .1 13.4 1 25.8 32.2 80
Triple Peak 8500 -M .0 * 32.2 34.2 94
Two Ocean Plateau 9240 7.4 17.4 43 33.9 34.8 97
Willow Creek 8080 .3 .0 * 44.4 44.2 100
Younts Peak 8350 .0 .0 * 18.0 21.0 86
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Basin Index (%) 59* 98
MADISON HEADWATERS IN WYOMING
Black Bear 8170 14.2 15.8 90 48.9 48.0 102
Canyon 7870 .0 -M * 21.3 -M *
Madison Plateau 7750 .0 .0 * 33.9 33.8 100
West Yellowstone 6700 .0 .0 * 21.9 19.6 112
Whiskey Creek 6800 .0 .0 * 29.9 27.2 110
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Basin Index (%) 90* 105
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 4.8 11.6 41 23.5 28.4 83
Canyon 7870 .0 -M * 21.3 -M *
Evening Star 9200 .0 11.2 0 34.3 37.0 93
Fisher Creek 9100 10.7 22.4 48 41.1 43.4 95
Monument Peak 8850 .0 5.0 0 30.3 31.0 98
Northeast Entrance 7350 .1 .0 * 16.6 18.2 91
Parker Peak 9400 .0 7.6 0 29.3 26.4 111
Sylvan Lake 8420 .1 .0 * 28.7 32.2 89
Thumb Divide 7980 .1 .0 * 23.3 24.4 95
Two Ocean Plateau 9240 7.4 17.4 43 33.9 34.8 97
White Mill 8700 .4 10.6 4 28.3 30.3 93
Wolverine 7650 .0 .0 * 16.1 17.1 94
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Basin Index (%) 28 94
WIND RIVER
Burroughs Creek 8750 .0 -M * 16.0 -M *
Castle Creek 8400 .0 .0 * 12.9 14.0 92
Cold Springs 9630 .2 .0 * 16.8 16.6 101
Deer Park 9700 .4 .0 * 33.9 25.4 133
Hobbs Park 10100 .0 .0 * 25.9 21.8 119
Kirwin 9550 .0 .0 * 20.4 19.2 106
Little Warm 9370 .1 .0 * 18.8 18.0 104
South Pass 9040 .0 .0 * 29.3 22.0 133
St. Lawrence Alt 8620 .0 -M * 18.7 -M *
Togwotee Pass 9580 .1 13.4 1 25.8 32.2 80
Townsend Creek 8700 .0 .0 * 22.4 18.8 119
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Basin Index (%) 6* 110
BIGHORN BASIN
Bald Mtn. 9380 .2 5.0 4 24.2 24.0 101
Bear Trap Meadow 8200 .1 .0 * 17.1 15.2 112
Bone Springs Div 9350 .0 .0 * 19.2 22.6 85
Grave Springs 8550 .1 .0 * 17.9 15.5 115
Kirwin 9550 .0 .0 * 20.4 19.2 106
Marquette 8760 .1 .0 * 20.1 18.6 108
Middle Powder 7760 .0 .0 * 18.6 16.8 111
Owl Creek 8975 .0 .0 * -M 13.3 *
Powder River Pass 9480 .0 .0 * 20.0 21.0 95
Shell Creek 9580 .0 .6 0* 20.2 20.9 97
Timber Creek 7950 .1 .0 * 17.4 15.7 111
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Basin Index (%) 11* 103
SHOSHONE RIVER
Blackwater 9780 .6 13.4 4 29.3 30.8 95
Evening Star 9200 .0 11.2 0 34.3 37.0 93
Marquette 8760 .1 .0 * 20.1 18.6 108
Sylvan Lake 8420 .1 .0 * 28.7 32.2 89
Sylvan Road 7120 .0 .0 * 18.2 21.9 83
Younts Peak 8350 .0 .0 * 18.0 21.0 86
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Basin Index (%) 3* 92
POWDER RIVER
Bear Trap Meadow 8200 .1 .0 * 17.1 15.2 112
Cloud Peak Reservoir 9860 .0 .0 * 25.1 23.3 108
Grave Springs 8550 .1 .0 * 17.9 15.5 115
Hansen Sawmill 8360 .0 .0 * 17.7 16.0 111
Middle Powder 7760 .0 .0 * 18.6 16.8 111
Powder River Pass 9480 .0 .0 * 20.0 21.0 95
Soldier Park 8720 .0 .0 * 17.5 16.6 105
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Basin Index (%) * 108
TONGUE RIVER
Big Goose 7990 .2 .0 * 21.6 20.3 106
Bone Springs Div 9350 .0 .0 * 19.2 22.6 85
Burgess Junction 7880 .0 .0 * 22.9 19.6 117
Dome Lake 8880 .0 .0 * 19.2 22.6 85
Little Goose 8870 .0 .0 * 22.2 22.2 100
Sucker Creek 8880 .0 .0 * 27.0 23.1 117
Tie Creek 6870 .0 .0 * 22.3 20.5 109
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Basin Index (%) * 102
BELLE FOURCHE
Blind Park 6890 .0 .0 * 17.4 18.9 92
Cole Canyon 5910 .0 .0 * 18.8 17.5 107
North Rapid Creek 6130 .0 .0 * 15.9 16.0 99
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Basin Index (%) * 99
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 17.4 18.9 92
North Rapid Creek 6130 .0 .0 * 15.9 16.0 99
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Basin Index (%) * 95
UPPER N. PLATTE
Arapaho Ridge 10976 5.8 2.3 252* 31.8 30.2 105
Blackhall Mtn 9839 .9 9.3 10 43.3 41.4 105
Cinnabar Park 9707 -M .0 * 28.8 30.6 94
Columbine 9167 -M .0 * 32.0 32.3 99
Divide Peak 8730 .0 .0 * 33.8 27.4 123
Joe Wright 10158 6.6 5.2 127 34.7 35.4 98
Laprele Creek 8390 .0 .0 * 19.4 18.4 105
Med Bow 10512 15.0 -M * 42.6 -M *
Never Summer 10323 8.4 7.2 117 25.5 24.6 104
North French Creek 10153 3.4 11.8 29 36.8 38.2 96
Old Battle 9860 23.0 12.8 180 48.0 43.8 110
Rawah 9069 .0 .0 * 22.7 22.8 100
Sage Creek Basin 7850 -M .0 * 23.9 17.2 139
Sand Lake 10098 -M 16.2 * -M 34.1 *
South Brush Creek 8495 .2 .0 * 19.3 20.5 94
Tower 10620 18.8 21.3 88 58.3 51.6 113
Webber Springs 9260 .1 .0 * 36.1 34.0 106
Whiskey Park 9020 .0 .0 * 39.8 37.3 107
Willow Creek Pass 9523 .1 .0 * 22.7 19.8 115
Zirkel 9338 -M .0 * 39.4 37.1 106
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Basin Index (%) 96* 106
SWEETWATER
Deer Park 9700 .4 .0 * 33.9 25.4 133
Larsen Creek 9000 -M .0 * 20.3 17.3 117
South Pass 9040 .0 .0 * 29.3 22.0 133
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Basin Index (%) * 129
LOWER N. PLATTE
Casper Mtn. 7920 .0 .0 * 25.4 22.3 114
Laprele Creek 8390 .0 .0 * 19.4 18.4 105
Reno Hill 8430 .0 .0 * 25.7 24.7 104
Windy Peak 7915 -M .0 * 17.4 17.8 98
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Basin Index (%) * 106
LARAMIE RIVER
Brooklyn Lake 10250 .2 .0 * 32.1 30.2 106
Cinnabar Park 9707 -M .0 * 28.8 30.6 94
Crow Creek 8335 .0 .0 * 14.5 17.7 82
Deadman Hill 10239 .2 .1 200* 27.2 25.6 106
Rawah 9069 .0 .0 * 22.7 22.8 100
Roach 9740 .1 .0 * 27.4 26.7 103
Windy Peak 7915 -M .0 * 17.4 17.8 98
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Basin Index (%) 500* 99
S. PLATTE
Crow Creek 8335 .0 .0 * 14.5 17.7 82
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Basin Index (%) * 82
LITTLE SNAKE RIVER
Battle Mountain 7498 -M .0 * 24.8 20.0 124
Divide Peak 8730 .0 .0 * 33.8 27.4 123
Elk River 8739 -M .0 * 32.3 25.0 129
Elkhead Divide 8800 .1 -M * 35.7 -M *
Little Snake River 8928 -M .0 * 49.0 42.2 116
Old Battle 9860 23.0 12.8 180 48.0 43.8 110
Sage Creek Basin 7850 -M .0 * 23.9 17.2 139
Sandstone RS 8152 .0 .0 * 29.0 22.4 129
Whiskey Park 9020 .0 .0 * 39.8 37.3 107
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Basin Index (%) 180* 119
UPPER GREEN RIVER
Big Sandy Opening 9080 -M .0 * 20.9 18.2 115
Blind Bull Sum 8650 2.0 6.4 31 23.3 24.2 96
East Rim Divide 7930 -M .0 * 16.3 15.7 104
Elkhart Park G.S. 9400 -M .0 * 17.7 17.8 99
Gros Ventre Summit 8750 .0 .0 * 15.1 17.5 86
Gunsight Pass 9820 .2 .0 * 19.4 19.2 101
Indian Creek 9425 .5 .6 83* 29.8 27.2 110
Kendall R.S. 7740 .0 .0 * 17.7 18.0 98
Larsen Creek 9000 -M .0 * 20.3 17.3 117
Loomis Park 8240 .2 .0 * 20.8 22.8 91
New Fork Lake 8340 -M .0 * -M 16.1 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 -M .0 * 21.3 19.1 112
Spring Creek Divide 9000 7.4 1.7 435* 37.4 30.8 121
Triple Peak 8500 -M .0 * 32.2 34.2 94
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Basin Index (%) 118* 104
LOWER GREEN RIVER
Blacks Fork Jct 8869 .5 .0 * 18.6 16.1 116
Buck Pasture 9632 .0 -M * 26.6 -M *
EF Blacks Fork GS 9360 .0 .0 * 19.0 17.7 107
Hams Fork 7840 -M .0 * 19.9 16.9 118
Henrys Fork 10182 -M -M * 19.1 -M *
Hewinta 9500 .1 .0 * 20.8 19.1 109
Hickerson Park 9122 .0 .0 * 16.2 15.0 108
Hole-in-Rock 9168 .2 .0 * 16.7 14.8 113
Indian Creek 9425 .5 .6 83* 29.8 27.2 110
Kelley R.S. 8180 -M .0 * 28.0 23.3 120
Spirit Lk 10235 .0 .0 * 26.6 22.6 118
Steel Creek Park 10158 .1 .0 * 25.0 22.8 110
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Basin Index (%) 233* 113
UPPER BEAR RIVER
Bear River RS 8777 .0 .0 * 20.0 15.4 130
Bug Lake 7987 .1 .0 * 30.9 24.0 129
Burts Miller Ranch 8000 .3 .0 * 17.1 9.9 173
Chalk Creek #1 9171 .2 .0 * 37.0 30.7 121
Giveout 6930 .0 .0 * 20.2 18.0 112
Hayden Fork 9130 .0 .0 * 33.1 27.2 122
Kelley R.S. 8180 -M .0 * 28.0 23.3 120
Lily Lake 9133 .5 .0 * 22.3 21.9 102
Monte Cristo 8932 5.0 .0 * 45.8 32.2 142
Salt River Summit 7640 -M .0 * 25.6 21.5 119
Spring Creek Divide 9000 7.4 1.7 435* 37.4 30.8 121
Trial Lake 9992 5.6 .0 * 39.4 29.3 134
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Basin Index (%) 1124* 126
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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.