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 SATURDAY: JUNE 3 , 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 * 23.6 25.6 92
Blind Bull Sum 8650 11.2 13.2 85 22.4 23.5 95
Cottonwood Creek 7670 .2 .0 * 36.3 32.7 111
East Rim Divide 7930 .0 .0 * 15.5 15.3 101
Grand Targhee 9260 30.3 35.6 85 35.7 40.4 88
Granite Creek 6770 -M .0 * 19.3 24.4 79
Grassy Lake 7265 6.7 1.8 372* 45.7 43.8 104
Gros Ventre Summit 8750 -M .0 * 14.5 16.2 90
Gunsight Pass 9820 .3 3.0 10 18.0 18.3 98
Lewis Lake Divide 7850 7.4 9.3 80 44.6 41.4 108
Loomis Park 8240 .3 .0 * 19.9 22.0 90
Phillips Bench 8200 6.3 7.6 83 34.4 32.2 107
Salt River Summit 7640 .0 .0 * 24.6 20.6 119
Snake River Station 6920 .0 .0 * 26.7 28.6 93
Somsen Ranch 6800 -M .0 * 25.3 21.4 118
Spring Creek Divide 9000 -M 11.9 * -M 29.8 *
Thumb Divide 7980 .2 .0 * 22.8 23.6 97
Togwotee Pass 9580 6.4 17.6 36 25.0 31.2 80
Triple Peak 8500 .5 .0 * 30.9 32.2 96
Two Ocean Plateau 9240 17.1 23.8 72 32.3 33.4 97
Willow Creek 8080 3.6 2.7 133* 43.8 42.4 103
Younts Peak 8350 .0 .0 * 17.1 20.5 83
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Basin Index (%) 79* 98
MADISON HEADWATERS IN WYOMING
Black Bear 8170 25.6 24.0 107 48.5 46.2 105
Canyon 7870 .0 -M * 20.7 -M *
Madison Plateau 7750 8.2 6.0 137 33.8 32.6 104
West Yellowstone 6700 .0 .0 * 21.6 18.6 116
Whiskey Creek 6800 .1 .0 * 29.6 26.4 112
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Basin Index (%) 113 108
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 11.8 17.2 69 22.2 27.4 81
Canyon 7870 .0 -M * 20.7 -M *
Evening Star 9200 6.3 16.4 38 33.7 36.5 92
Fisher Creek 9100 -M 28.8 * 40.1 42.6 94
Monument Peak 8850 .6 11.4 5 28.4 28.6 99
Northeast Entrance 7350 .0 .0 * 15.2 17.6 86
Parker Peak 9400 6.1 12.4 49 28.7 25.6 112
Sylvan Lake 8420 .2 2.4 8 27.8 30.0 93
Thumb Divide 7980 .2 .0 * 22.8 23.6 97
Two Ocean Plateau 9240 17.1 23.8 72 32.3 33.4 97
White Mill 8700 9.1 15.6 58 26.8 29.2 92
Wolverine 7650 .1 .0 * 15.6 16.5 95
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Basin Index (%) 52 94
WIND RIVER
Burroughs Creek 8750 .1 -M * 13.9 -M *
Castle Creek 8400 .0 .0 * 10.3 13.6 76
Cold Springs 9630 .2 .0 * 15.2 16.2 94
Deer Park 9700 7.1 2.3 309 31.9 25.0 128
Hobbs Park 10100 5.0 5.2 96 24.5 20.6 119
Kirwin 9550 .0 .0 * 18.4 18.4 100
Little Warm 9370 .1 .0 * 16.9 17.0 99
South Pass 9040 .1 .2 50* 26.4 21.4 123
St. Lawrence Alt 8620 .1 -M * 16.6 -M *
Togwotee Pass 9580 6.4 17.6 36 25.0 31.2 80
Townsend Creek 8700 .0 .0 * 20.5 18.0 114
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Basin Index (%) 75* 104
BIGHORN BASIN
Bald Mtn. 9380 3.6 11.7 31 20.4 22.8 89
Bear Trap Meadow 8200 .1 .0 * 13.8 14.6 95
Bone Springs Div 9350 .0 4.8 0 17.2 21.6 80
Grave Springs 8550 .1 .0 * 16.1 14.7 110
Kirwin 9550 .0 .0 * 18.4 18.4 100
Marquette 8760 .1 .0 * 17.0 17.8 96
Middle Powder 7760 .0 .0 * 15.8 16.3 97
Owl Creek 8975 .0 .0 * 13.7 11.8 116
Powder River Pass 9480 .0 .0 * 18.2 19.2 95
Shell Creek 9580 .0 7.2 0 18.8 19.6 96
Timber Creek 7950 .1 .0 * 14.2 14.3 99
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Basin Index (%) 17* 96
SHOSHONE RIVER
Blackwater 9780 8.8 17.8 49 27.5 30.2 91
Evening Star 9200 6.3 16.4 38 33.7 36.5 92
Marquette 8760 .1 .0 * 17.0 17.8 96
Sylvan Lake 8420 .2 2.4 8 27.8 30.0 93
Sylvan Road 7120 .0 .0 * 17.3 21.1 82
Younts Peak 8350 .0 .0 * 17.1 20.5 83
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Basin Index (%) 42 90
POWDER RIVER
Bear Trap Meadow 8200 .1 .0 * 13.8 14.6 95
Cloud Peak Reservoir 9860 .3 4.8 6 23.1 22.1 105
Grave Springs 8550 .1 .0 * 16.1 14.7 110
Hansen Sawmill 8360 .0 .0 * 14.8 15.0 99
Middle Powder 7760 .0 .0 * 15.8 16.3 97
Powder River Pass 9480 .0 .0 * 18.2 19.2 95
Soldier Park 8720 .0 .0 * 14.2 16.0 89
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Basin Index (%) 10* 98
TONGUE RIVER
Big Goose 7990 .2 .0 * 16.4 19.4 85
Bone Springs Div 9350 .0 4.8 0 17.2 21.6 80
Burgess Junction 7880 .0 .0 * 18.9 18.5 102
Dome Lake 8880 .0 .0 * 18.2 21.0 87
Little Goose 8870 .0 .0 * 18.0 21.2 85
Sucker Creek 8880 .0 .2 0* 22.3 22.0 101
Tie Creek 6870 .0 .0 * 20.3 19.5 104
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Basin Index (%) 4* 92
BELLE FOURCHE
Blind Park 6890 .0 .0 * 16.3 17.6 93
Cole Canyon 5910 .0 .0 * 17.8 16.8 106
North Rapid Creek 6130 .1 .0 * 14.5 15.1 96
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Basin Index (%) * 98
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 16.3 17.6 93
North Rapid Creek 6130 .1 .0 * 14.5 15.1 96
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Basin Index (%) * 94
UPPER N. PLATTE
Arapaho Ridge 10976 11.7 10.8 108 30.3 28.6 106
Blackhall Mtn 9839 11.1 21.9 51 43.0 41.2 104
Cinnabar Park 9707 -M .0 * 27.8 29.4 95
Columbine 9167 -M .0 * 31.6 31.8 99
Divide Peak 8730 .0 .0 * 33.6 26.9 125
Joe Wright 10158 12.2 12.8 95 34.0 34.7 98
Laprele Creek 8390 .1 .0 * 18.4 18.2 101
Med Bow 10512 23.2 -M * 41.6 -M *
Never Summer 10323 16.3 16.1 101 24.5 24.1 102
North French Creek 10153 10.1 17.9 56 35.4 37.2 95
Old Battle 9860 30.4 22.8 133 47.3 42.9 110
Rawah 9069 .1 .0 * 21.8 21.6 101
Sage Creek Basin 7850 -M .0 * 23.3 16.9 138
Sand Lake 10098 20.1 21.0 96 35.0 33.4 105
South Brush Creek 8495 .1 .0 * 18.0 20.0 90
Tower 10620 30.0 32.2 93 57.8 50.4 115
Webber Springs 9260 6.5 .0 * 35.5 32.8 108
Whiskey Park 9020 2.7 4.2 64 39.7 36.8 108
Willow Creek Pass 9523 .2 .0 * 21.8 18.6 117
Zirkel 9338 -M .0 * 38.6 36.4 106
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Basin Index (%) 95* 106
SWEETWATER
Deer Park 9700 7.1 2.3 309 31.9 25.0 128
Larsen Creek 9000 -M .0 * 19.5 17.2 113
South Pass 9040 .1 .2 50* 26.4 21.4 123
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Basin Index (%) 288* 122
LOWER N. PLATTE
Casper Mtn. 7920 .0 .0 * 22.7 21.8 104
Laprele Creek 8390 .1 .0 * 18.4 18.2 101
Reno Hill 8430 .1 .0 * 24.3 23.4 104
Windy Peak 7915 .0 .0 * 17.1 17.0 101
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Basin Index (%) * 103
LARAMIE RIVER
Brooklyn Lake 10250 .2 3.0 7 31.5 29.0 109
Cinnabar Park 9707 -M .0 * 27.8 29.4 95
Crow Creek 8335 .0 .0 * 13.7 16.2 85
Deadman Hill 10239 3.4 6.8 50 25.2 24.5 103
Rawah 9069 .1 .0 * 21.8 21.6 101
Roach 9740 .2 .6 33* 26.4 25.8 102
Windy Peak 7915 .0 .0 * 17.1 17.0 101
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Basin Index (%) 38* 100
S. PLATTE
Crow Creek 8335 .0 .0 * 13.7 16.2 85
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Basin Index (%) * 85
LITTLE SNAKE RIVER
Battle Mountain 7498 .0 .0 * 24.6 20.0 123
Divide Peak 8730 .0 .0 * 33.6 26.9 125
Elk River 8739 -M .0 * 30.9 24.6 126
Elkhead Divide 8800 .2 -M * 35.0 -M *
Little Snake River 8928 4.1 .6 683* 47.8 41.4 115
Old Battle 9860 30.4 22.8 133 47.3 42.9 110
Sage Creek Basin 7850 -M .0 * 23.3 16.9 138
Sandstone RS 8152 .0 .0 * 28.0 22.4 125
Whiskey Park 9020 2.7 4.2 64 39.7 36.8 108
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Basin Index (%) 135* 119
UPPER GREEN RIVER
Big Sandy Opening 9080 -M .0 * 19.9 17.4 114
Blind Bull Sum 8650 11.2 13.2 85 22.4 23.5 95
East Rim Divide 7930 .0 .0 * 15.5 15.3 101
Elkhart Park G.S. 9400 .0 .0 * 16.3 17.4 94
Gros Ventre Summit 8750 -M .0 * 14.5 16.2 90
Gunsight Pass 9820 .3 3.0 10 18.0 18.3 98
Indian Creek 9425 10.4 9.2 113 29.4 26.2 112
Kendall R.S. 7740 .1 .0 * 16.7 17.5 95
Larsen Creek 9000 -M .0 * 19.5 17.2 113
Loomis Park 8240 .3 .0 * 19.9 22.0 90
New Fork Lake 8340 -M .0 * -M 15.4 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 -M .0 * 20.3 18.5 110
Spring Creek Divide 9000 -M 11.9 * -M 29.8 *
Triple Peak 8500 .5 .0 * 30.9 32.2 96
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Basin Index (%) 90* 101
LOWER GREEN RIVER
Blacks Fork Jct 8869 .4 .0 * 17.5 15.7 111
Buck Pasture 9632 .0 -M * 26.1 -M *
EF Blacks Fork GS 9360 .0 .0 * 18.3 16.8 109
Hams Fork 7840 -M .0 * 19.8 15.2 130
Henrys Fork 10182 -M -M * 18.8 -M *
Hewinta 9500 .0 .0 * 20.2 18.2 111
Hickerson Park 9122 .0 .0 * 16.1 14.4 112
Hole-in-Rock 9168 -M .0 * -M 14.4 *
Indian Creek 9425 10.4 9.2 113 29.4 26.2 112
Kelley R.S. 8180 .0 .0 * 27.5 22.4 123
Spirit Lk 10235 .0 .0 * 26.0 20.7 126
Steel Creek Park 10158 7.2 6.0 120 24.3 21.6 112
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Basin Index (%) 118* 116
UPPER BEAR RIVER
Bear River RS 8777 .0 .0 * 18.9 15.2 124
Bug Lake 7987 .1 .0 * 30.0 22.8 132
Burts Miller Ranch 8000 .3 .0 * 16.5 9.9 167
Chalk Creek #1 9171 5.4 .0 * 36.4 29.9 122
Giveout 6930 .1 .0 * 19.6 17.0 115
Hayden Fork 9130 .0 .0 * 31.8 26.0 122
Kelley R.S. 8180 .0 .0 * 27.5 22.4 123
Lily Lake 9133 .4 .0 * 20.8 21.4 97
Monte Cristo 8932 14.3 2.6 550* 44.7 31.5 142
Salt River Summit 7640 .0 .0 * 24.6 20.6 119
Spring Creek Divide 9000 -M 11.9 * -M 29.8 *
Trial Lake 9992 12.9 1.6 806* 38.9 28.4 137
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Basin Index (%) 798* 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.
