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: JUNE 25 , 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 * 26.5 26.8 99
Blind Bull Sum 8650 .0 .0 * 25.7 24.8 104
Cottonwood Creek 7670 .0 .0 * 39.3 34.6 114
East Rim Divide 7930 -M .0 * 17.8 16.4 109
Grand Targhee 9260 6.4 7.6 84 39.1 44.8 87
Granite Creek 6770 -M .0 * 19.9 26.8 74
Grassy Lake 7265 -M .0 * 49.3 46.8 105
Gros Ventre Summit 8750 .0 .0 * 18.1 18.1 100
Gunsight Pass 9820 .1 .0 * 22.3 20.2 110
Lewis Lake Divide 7850 -M .0 * 47.8 43.2 111
Loomis Park 8240 .1 .0 * 22.7 23.2 98
Phillips Bench 8200 .2 .0 * 37.2 35.2 106
Salt River Summit 7640 -M .0 * 26.6 22.2 120
Snake River Station 6920 .0 .0 * 28.7 30.2 95
Somsen Ranch 6800 -M .0 * 27.9 22.6 123
Spring Creek Divide 9000 .3 .0 * 39.0 31.6 123
Thumb Divide 7980 .1 .0 * 25.5 25.4 100
Togwotee Pass 9580 .0 1.2 0* 29.3 33.6 87
Triple Peak 8500 -M .0 * 34.7 34.7 100
Two Ocean Plateau 9240 .9 2.4 38* 36.9 36.2 102
Willow Creek 8080 .2 .0 * 46.8 45.7 102
Younts Peak 8350 .0 .0 * 21.4 21.8 98
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Basin Index (%) 74* 103
MADISON HEADWATERS IN WYOMING
Black Bear 8170 1.3 .0 * 51.9 49.2 105
Canyon 7870 .1 -M * 23.6 -M *
Madison Plateau 7750 .0 .0 * 37.0 34.4 108
West Yellowstone 6700 .0 .0 * 23.9 20.1 119
Whiskey Creek 6800 .0 .0 * 33.3 28.6 116
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Basin Index (%) * 110
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 .0 1.8 0* 25.0 29.6 84
Canyon 7870 .1 -M * 23.6 -M *
Evening Star 9200 .0 .0 * 38.2 37.8 101
Fisher Creek 9100 .2 6.2 3 45.4 44.6 102
Monument Peak 8850 .0 .0 * 33.5 32.0 105
Northeast Entrance 7350 .1 .0 * 19.5 19.6 99
Parker Peak 9400 .0 .0 * 32.2 27.3 118
Sylvan Lake 8420 .0 .0 * 32.2 33.4 96
Thumb Divide 7980 .1 .0 * 25.5 25.4 100
Two Ocean Plateau 9240 .9 2.4 38* 36.9 36.2 102
White Mill 8700 .0 .0 * 31.9 31.9 100
Wolverine 7650 .0 .0 * 17.9 18.3 98
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Basin Index (%) 12* 101
WIND RIVER
Burroughs Creek 8750 .0 -M * 19.6 -M *
Castle Creek 8400 .0 .0 * 16.5 14.8 111
Cold Springs 9630 .0 .0 * 19.6 17.8 110
Deer Park 9700 .0 .0 * 36.2 25.6 141
Hobbs Park 10100 .0 .0 * 30.3 23.0 132
Kirwin 9550 .0 .0 * 25.8 20.2 128
Little Warm 9370 .0 .0 * 22.3 18.6 120
South Pass 9040 .0 .0 * 30.7 23.0 133
St. Lawrence Alt 8620 .0 -M * 22.5 -M *
Togwotee Pass 9580 .0 1.2 0* 29.3 33.6 87
Townsend Creek 8700 .0 .0 * 25.6 20.2 127
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Basin Index (%) 0* 120
BIGHORN BASIN
Bald Mtn. 9380 .0 .0 * 29.0 25.9 112
Bear Trap Meadow 8200 .1 .0 * 20.0 16.6 120
Bone Springs Div 9350 .0 .0 * 23.8 24.6 97
Grave Springs 8550 .0 .0 * 20.7 16.0 129
Kirwin 9550 .0 .0 * 25.8 20.2 128
Marquette 8760 .0 .0 * 23.3 20.4 114
Middle Powder 7760 .1 .0 * 22.2 18.0 123
Owl Creek 8975 .0 .0 * 20.6 14.4 143
Powder River Pass 9480 .2 .0 * 23.6 22.8 104
Shell Creek 9580 .8 .0 * 24.8 22.2 112
Timber Creek 7950 .0 .0 * 21.2 16.6 128
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Basin Index (%) * 117
SHOSHONE RIVER
Blackwater 9780 .0 .7 0* 33.3 31.3 106
Evening Star 9200 .0 .0 * 38.2 37.8 101
Marquette 8760 .0 .0 * 23.3 20.4 114
Sylvan Lake 8420 .0 .0 * 32.2 33.4 96
Sylvan Road 7120 .0 .0 * 20.8 22.5 92
Younts Peak 8350 .0 .0 * 21.4 21.8 98
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Basin Index (%) 0* 101
POWDER RIVER
Bear Trap Meadow 8200 .1 .0 * 20.0 16.6 120
Cloud Peak Reservoir 9860 .0 .0 * 28.7 24.2 119
Grave Springs 8550 .0 .0 * 20.7 16.0 129
Hansen Sawmill 8360 .0 .0 * 22.1 18.0 123
Middle Powder 7760 .1 .0 * 22.2 18.0 123
Powder River Pass 9480 .2 .0 * 23.6 22.8 104
Soldier Park 8720 .0 .0 * 20.7 17.6 118
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Basin Index (%) * 119
TONGUE RIVER
Big Goose 7990 .0 .0 * 25.1 21.2 118
Bone Springs Div 9350 .0 .0 * 23.8 24.6 97
Burgess Junction 7880 .0 .0 * 26.6 21.4 124
Dome Lake 8880 .0 .0 * 24.1 24.0 100
Little Goose 8870 .0 .0 * 25.6 22.8 112
Sucker Creek 8880 .0 .0 * 30.9 25.2 123
Tie Creek 6870 .0 .0 * -M 21.7 *
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Basin Index (%) * 112
BELLE FOURCHE
Blind Park 6890 .0 .0 * 21.3 21.3 100
Cole Canyon 5910 .0 .0 * 21.7 19.4 112
North Rapid Creek 6130 .0 .0 * 18.8 18.4 102
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Basin Index (%) * 105
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 21.3 21.3 100
North Rapid Creek 6130 .0 .0 * 18.8 18.4 102
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Basin Index (%) * 101
UPPER N. PLATTE
Arapaho Ridge 10976 .0 .0 * 32.5 30.6 106
Blackhall Mtn 9839 -M .0 * 44.7 41.4 108
Cinnabar Park 9707 -M .0 * 29.9 30.8 97
Columbine 9167 -M .0 * 32.7 33.2 98
Divide Peak 8730 -M .0 * 34.3 28.6 120
Joe Wright 10158 .0 .0 * 35.9 36.2 99
Laprele Creek 8390 .0 .0 * 21.8 18.8 116
Med Bow 10512 .2 -M * 43.5 -M *
Never Summer 10323 .5 .0 * 27.1 25.2 108
North French Creek 10153 .0 .0 * 38.2 38.8 98
Old Battle 9860 4.3 .0 * 48.6 45.4 107
Rawah 9069 .0 .0 * 24.1 22.9 105
Sage Creek Basin 7850 -M .0 * 24.5 17.5 140
Sand Lake 10098 -M .0 * -M 36.2 *
South Brush Creek 8495 .1 .0 * 20.5 20.8 99
Tower 10620 1.4 2.2 64* 59.4 53.0 112
Webber Springs 9260 .0 .0 * 36.1 36.0 100
Whiskey Park 9020 .0 .0 * 40.9 37.7 108
Willow Creek Pass 9523 .0 .0 * 23.5 21.0 112
Zirkel 9338 -M .0 * 40.5 38.1 106
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Basin Index (%) 286* 107
SWEETWATER
Deer Park 9700 .0 .0 * 36.2 25.6 141
Larsen Creek 9000 -M .0 * 23.0 18.0 128
South Pass 9040 .0 .0 * 30.7 23.0 133
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Basin Index (%) * 135
LOWER N. PLATTE
Casper Mtn. 7920 -M .0 * 27.1 22.4 121
Laprele Creek 8390 .0 .0 * 21.8 18.8 116
Reno Hill 8430 -M .0 * 27.4 25.5 107
Windy Peak 7915 -M .0 * 18.4 19.1 96
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Basin Index (%) * 110
LARAMIE RIVER
Brooklyn Lake 10250 .0 .0 * 33.0 31.6 104
Cinnabar Park 9707 -M .0 * 29.9 30.8 97
Crow Creek 8335 .0 .0 * 15.8 19.0 83
Deadman Hill 10239 .0 .0 * 28.8 26.0 111
Rawah 9069 .0 .0 * 24.1 22.9 105
Roach 9740 .0 .0 * 28.6 27.6 104
Windy Peak 7915 -M .0 * 18.4 19.1 96
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Basin Index (%) * 101
S. PLATTE
Crow Creek 8335 .0 .0 * 15.8 19.0 83
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Basin Index (%) * 83
LITTLE SNAKE RIVER
Battle Mountain 7498 -M .0 * 25.6 20.5 125
Divide Peak 8730 -M .0 * 34.3 28.6 120
Elk River 8739 -M .0 * 33.2 25.5 130
Elkhead Divide 8800 .1 -M * 36.7 -M *
Little Snake River 8928 -M .0 * 50.0 42.7 117
Old Battle 9860 4.3 .0 * 48.6 45.4 107
Sage Creek Basin 7850 -M .0 * 24.5 17.5 140
Sandstone RS 8152 -M .0 * 29.8 23.2 128
Whiskey Park 9020 .0 .0 * 40.9 37.7 108
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Basin Index (%) * 119
UPPER GREEN RIVER
Big Sandy Opening 9080 -M .0 * 22.2 19.2 116
Blind Bull Sum 8650 .0 .0 * 25.7 24.8 104
East Rim Divide 7930 -M .0 * 17.8 16.4 109
Elkhart Park G.S. 9400 -M .0 * 20.5 19.0 108
Gros Ventre Summit 8750 .0 .0 * 18.1 18.1 100
Gunsight Pass 9820 .1 .0 * 22.3 20.2 110
Indian Creek 9425 -M .0 * 31.4 27.7 113
Kendall R.S. 7740 .0 .0 * 19.8 18.4 108
Larsen Creek 9000 -M .0 * 23.0 18.0 128
Loomis Park 8240 .1 .0 * 22.7 23.2 98
New Fork Lake 8340 -M .0 * -M 16.4 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 -M .0 * 22.3 19.4 115
Spring Creek Divide 9000 .3 .0 * 39.0 31.6 123
Triple Peak 8500 -M .0 * 34.7 34.7 100
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Basin Index (%) * 110
LOWER GREEN RIVER
Blacks Fork Jct 8869 .3 .0 * 19.2 16.4 117
Buck Pasture 9632 .0 -M * 27.4 -M *
EF Blacks Fork GS 9360 .0 .0 * 19.7 17.8 111
Hams Fork 7840 -M .0 * 21.1 17.0 124
Henrys Fork 10182 -M -M * 20.8 -M *
Hewinta 9500 .0 .0 * 21.5 19.8 109
Hickerson Park 9122 .0 .0 * 17.6 15.4 114
Hole-in-Rock 9168 .1 .0 * 19.0 15.5 123
Indian Creek 9425 -M .0 * 31.4 27.7 113
Kelley R.S. 8180 -M .0 * 28.9 24.4 118
Spirit Lk 10235 .0 .0 * 28.2 22.7 124
Steel Creek Park 10158 .0 .0 * 26.6 23.4 114
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Basin Index (%) * 117
UPPER BEAR RIVER
Bear River RS 8777 .0 .0 * 20.4 15.7 130
Bug Lake 7987 .0 .0 * 32.1 24.6 130
Burts Miller Ranch 8000 .3 .0 * 17.5 10.4 168
Chalk Creek #1 9171 .1 .0 * 37.9 31.3 121
Giveout 6930 .1 .0 * 21.2 18.8 113
Hayden Fork 9130 .0 .0 * 33.9 28.0 121
Kelley R.S. 8180 -M .0 * 28.9 24.4 118
Lily Lake 9133 .2 .0 * 22.9 22.2 103
Monte Cristo 8932 .0 .0 * 46.5 32.9 141
Salt River Summit 7640 -M .0 * 26.6 22.2 120
Spring Creek Divide 9000 .3 .0 * 39.0 31.6 123
Trial Lake 9992 .0 .0 * 40.1 29.6 135
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Basin Index (%) * 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.
