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 TUESDAY: JUNE 6 , 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 * 23.5 25.7 91
Blind Bull Sum 8650 7.8 10.9 72 22.4 23.6 95
Cottonwood Creek 7670 .1 .0 * 36.5 33.1 110
East Rim Divide 7930 -M .0 * 15.7 15.4 102
Grand Targhee 9260 26.6 31.6 84 36.2 41.4 87
Granite Creek 6770 -M .0 * 19.7 24.4 81
Grassy Lake 7265 2.3 .0 * 45.8 44.2 104
Gros Ventre Summit 8750 .0 .0 * 14.3 16.4 87
Gunsight Pass 9820 .2 .0 * 18.5 18.4 101
Lewis Lake Divide 7850 3.1 4.4 70 44.5 41.7 107
Loomis Park 8240 .1 .0 * 20.1 22.3 90
Phillips Bench 8200 2.9 4.5 64 34.5 33.4 103
Salt River Summit 7640 -M .0 * 24.8 20.8 119
Snake River Station 6920 .0 .0 * 26.6 29.0 92
Somsen Ranch 6800 -M .0 * 25.5 21.6 118
Spring Creek Divide 9000 -M 8.9 * -M 29.9 *
Thumb Divide 7980 .1 .0 * 22.9 24.0 95
Togwotee Pass 9580 2.9 16.4 18 25.2 31.3 81
Triple Peak 8500 -M .0 * 31.0 32.4 96
Two Ocean Plateau 9240 13.6 20.2 67 32.8 33.9 97
Willow Creek 8080 .4 .0 * 44.1 42.9 103
Younts Peak 8350 .0 .0 * 17.4 20.6 84
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Basin Index (%) 68* 98
MADISON HEADWATERS IN WYOMING
Black Bear 8170 22.1 20.8 106 48.6 46.3 105
Canyon 7870 .0 -M * 20.9 -M *
Madison Plateau 7750 4.5 1.4 321* 33.8 32.6 104
West Yellowstone 6700 .0 .0 * 21.7 18.8 115
Whiskey Creek 6800 .0 .0 * 29.5 27.0 109
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Basin Index (%) 120* 107
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 9.7 15.6 62 22.7 27.6 82
Canyon 7870 .0 -M * 20.9 -M *
Evening Star 9200 3.3 14.2 23 33.9 36.8 92
Fisher Creek 9100 -M 25.8 * 40.4 43.0 94
Monument Peak 8850 .1 8.8 1 28.8 29.2 99
Northeast Entrance 7350 .0 .0 * 15.9 17.6 90
Parker Peak 9400 2.8 9.2 30 29.0 25.7 113
Sylvan Lake 8420 .1 .0 * 28.1 30.1 93
Thumb Divide 7980 .1 .0 * 22.9 24.0 95
Two Ocean Plateau 9240 13.6 20.2 67 32.8 33.9 97
White Mill 8700 6.0 13.2 45 27.1 29.4 92
Wolverine 7650 .0 .0 * 15.9 17.0 94
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Basin Index (%) 44 95
WIND RIVER
Burroughs Creek 8750 .0 -M * 14.3 -M *
Castle Creek 8400 .0 .0 * 11.1 13.6 82
Cold Springs 9630 .1 .0 * 15.9 16.4 97
Deer Park 9700 4.9 .0 * 32.7 25.1 130
Hobbs Park 10100 2.0 3.8 53 25.3 21.2 119
Kirwin 9550 .0 .0 * 19.0 18.6 102
Little Warm 9370 .0 .0 * 17.6 17.2 102
South Pass 9040 .1 .0 * 27.6 21.6 128
St. Lawrence Alt 8620 .0 -M * 17.4 -M *
Togwotee Pass 9580 2.9 16.4 18 25.2 31.3 81
Townsend Creek 8700 .0 .0 * 21.2 18.4 115
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Basin Index (%) 50* 107
BIGHORN BASIN
Bald Mtn. 9380 .4 9.6 4 21.1 23.0 92
Bear Trap Meadow 8200 .0 .0 * 14.4 14.6 99
Bone Springs Div 9350 .0 2.8 0 17.4 21.8 80
Grave Springs 8550 .0 .0 * 16.3 14.9 109
Kirwin 9550 .0 .0 * 19.0 18.6 102
Marquette 8760 .0 .0 * 17.7 17.9 99
Middle Powder 7760 .0 .0 * 16.4 16.6 99
Owl Creek 8975 .0 .0 * 14.5 12.2 119
Powder River Pass 9480 .0 .0 * 18.6 19.4 96
Shell Creek 9580 .0 5.2 0 19.3 19.7 98
Timber Creek 7950 .1 .0 * 15.9 14.4 110
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Basin Index (%) 3* 99
SHOSHONE RIVER
Blackwater 9780 6.0 15.6 38 28.2 30.3 93
Evening Star 9200 3.3 14.2 23 33.9 36.8 92
Marquette 8760 .0 .0 * 17.7 17.9 99
Sylvan Lake 8420 .1 .0 * 28.1 30.1 93
Sylvan Road 7120 .0 .0 * 17.2 21.2 81
Younts Peak 8350 .0 .0 * 17.4 20.6 84
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Basin Index (%) 32* 91
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * 14.4 14.6 99
Cloud Peak Reservoir 9860 .1 1.6 6* 23.5 22.2 106
Grave Springs 8550 .0 .0 * 16.3 14.9 109
Hansen Sawmill 8360 .0 .0 * 15.3 15.3 100
Middle Powder 7760 .0 .0 * 16.4 16.6 99
Powder River Pass 9480 .0 .0 * 18.6 19.4 96
Soldier Park 8720 .0 .0 * 14.5 16.2 90
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Basin Index (%) 6* 100
TONGUE RIVER
Big Goose 7990 .1 .0 * 18.1 19.6 92
Bone Springs Div 9350 .0 2.8 0 17.4 21.8 80
Burgess Junction 7880 .0 .0 * 20.8 18.8 111
Dome Lake 8880 .0 .0 * 18.5 21.5 86
Little Goose 8870 .0 .0 * 19.5 21.5 91
Sucker Creek 8880 .0 .0 * 25.4 22.6 112
Tie Creek 6870 .0 .0 * 20.8 19.8 105
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Basin Index (%) 4* 96
BELLE FOURCHE
Blind Park 6890 .0 .0 * 16.3 17.8 92
Cole Canyon 5910 .0 .0 * 17.9 17.1 105
North Rapid Creek 6130 .1 .0 * 14.5 15.1 96
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Basin Index (%) * 97
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 16.3 17.8 92
North Rapid Creek 6130 .1 .0 * 14.5 15.1 96
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Basin Index (%) * 94
UPPER N. PLATTE
Arapaho Ridge 10976 10.4 7.6 137 30.6 29.5 104
Blackhall Mtn 9839 8.0 17.9 45 43.1 41.3 104
Cinnabar Park 9707 -M .0 * 28.2 30.2 93
Columbine 9167 -M .0 * 31.6 31.8 99
Divide Peak 8730 .0 .0 * 33.7 27.0 125
Joe Wright 10158 11.4 10.7 107 34.3 34.8 99
Laprele Creek 8390 .0 .0 * 18.5 18.2 102
Med Bow 10512 20.8 -M * 42.2 -M *
Never Summer 10323 14.1 14.0 101 24.8 24.2 102
North French Creek 10153 7.8 16.8 46 35.8 37.6 95
Old Battle 9860 28.2 20.2 140 47.6 43.0 111
Rawah 9069 .0 .0 * 22.2 21.7 102
Sage Creek Basin 7850 -M .0 * 23.6 17.0 139
Sand Lake 10098 18.6 19.5 95 35.2 33.8 104
South Brush Creek 8495 .2 .0 * 18.3 20.2 91
Tower 10620 26.5 27.4 97 58.0 51.0 114
Webber Springs 9260 3.9 .0 * 35.9 33.5 107
Whiskey Park 9020 .1 .4 25* 39.7 36.8 108
Willow Creek Pass 9523 .1 .0 * 22.1 18.8 118
Zirkel 9338 -M .0 * 38.7 36.5 106
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Basin Index (%) 96* 106
SWEETWATER
Deer Park 9700 4.9 .0 * 32.7 25.1 130
Larsen Creek 9000 -M .0 * 20.0 17.2 116
South Pass 9040 .1 .0 * 27.6 21.6 128
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Basin Index (%) * 126
LOWER N. PLATTE
Casper Mtn. 7920 -M .0 * 23.1 21.9 105
Laprele Creek 8390 .0 .0 * 18.5 18.2 102
Reno Hill 8430 .0 .0 * 24.4 23.4 104
Windy Peak 7915 -M .0 * 17.3 17.4 99
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Basin Index (%) * 103
LARAMIE RIVER
Brooklyn Lake 10250 .2 .4 50* 31.9 29.1 110
Cinnabar Park 9707 -M .0 * 28.2 30.2 93
Crow Creek 8335 .0 .0 * 14.1 17.1 82
Deadman Hill 10239 .4 4.2 10 26.2 24.7 106
Rawah 9069 .0 .0 * 22.2 21.7 102
Roach 9740 .2 .0 * 27.1 26.4 103
Windy Peak 7915 -M .0 * 17.3 17.4 99
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Basin Index (%) 17* 100
S. PLATTE
Crow Creek 8335 .0 .0 * 14.1 17.1 82
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Basin Index (%) * 82
LITTLE SNAKE RIVER
Battle Mountain 7498 -M .0 * 24.5 20.0 122
Divide Peak 8730 .0 .0 * 33.7 27.0 125
Elk River 8739 -M .0 * 30.9 24.6 126
Elkhead Divide 8800 .2 -M * 35.2 -M *
Little Snake River 8928 .4 .0 * 48.1 41.6 116
Old Battle 9860 28.2 20.2 140 47.6 43.0 111
Sage Creek Basin 7850 -M .0 * 23.6 17.0 139
Sandstone RS 8152 .0 .0 * 28.1 22.4 125
Whiskey Park 9020 .1 .4 25* 39.7 36.8 108
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Basin Index (%) 139* 119
UPPER GREEN RIVER
Big Sandy Opening 9080 -M .0 * 20.3 17.8 114
Blind Bull Sum 8650 7.8 10.9 72 22.4 23.6 95
East Rim Divide 7930 -M .0 * 15.7 15.4 102
Elkhart Park G.S. 9400 -M .0 * 16.7 17.4 96
Gros Ventre Summit 8750 .0 .0 * 14.3 16.4 87
Gunsight Pass 9820 .2 .0 * 18.5 18.4 101
Indian Creek 9425 6.7 5.0 134 29.4 26.4 111
Kendall R.S. 7740 .0 .0 * 16.9 17.6 96
Larsen Creek 9000 -M .0 * 20.0 17.2 116
Loomis Park 8240 .1 .0 * 20.1 22.3 90
New Fork Lake 8340 -M .0 * -M 15.6 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 -M .0 * 20.3 18.6 109
Spring Creek Divide 9000 -M 8.9 * -M 29.9 *
Triple Peak 8500 -M .0 * 31.0 32.4 96
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Basin Index (%) 93* 101
LOWER GREEN RIVER
Blacks Fork Jct 8869 .0 .0 * 18.0 15.7 115
Buck Pasture 9632 .0 -M * 26.5 -M *
EF Blacks Fork GS 9360 .0 .0 * 18.4 16.8 110
Hams Fork 7840 -M .0 * 19.8 16.0 124
Henrys Fork 10182 -M -M * 18.7 -M *
Hewinta 9500 .0 .0 * 20.3 18.2 112
Hickerson Park 9122 .0 .0 * 16.1 14.5 111
Hole-in-Rock 9168 .0 .0 * -M 14.4 *
Indian Creek 9425 6.7 5.0 134 29.4 26.4 111
Kelley R.S. 8180 .0 .0 * 27.5 22.8 121
Spirit Lk 10235 .0 .0 * 26.3 20.8 126
Steel Creek Park 10158 4.5 1.1 409* 24.4 21.6 113
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Basin Index (%) 184* 116
UPPER BEAR RIVER
Bear River RS 8777 .0 .0 * 19.2 15.2 126
Bug Lake 7987 .1 .0 * 30.0 23.2 129
Burts Miller Ranch 8000 .0 .0 * 17.0 9.9 172
Chalk Creek #1 9171 1.7 .0 * 36.8 29.9 123
Giveout 6930 .0 .0 * 19.8 17.2 115
Hayden Fork 9130 .0 .0 * 32.5 26.4 123
Kelley R.S. 8180 .0 .0 * 27.5 22.8 121
Lily Lake 9133 .0 .0 * 21.3 21.4 100
Monte Cristo 8932 11.8 .0 * 45.4 31.8 143
Salt River Summit 7640 -M .0 * 24.8 20.8 119
Spring Creek Divide 9000 -M 8.9 * -M 29.9 *
Trial Lake 9992 10.7 .0 * 39.2 29.2 134
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Basin Index (%) * 127
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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.
