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 THURSDAY: JUNE 15 , 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 * 24.2 26.6 91
Blind Bull Sum 8650 .3 3.8 8 24.2 24.2 100
Cottonwood Creek 7670 .1 .0 * 38.1 34.2 111
East Rim Divide 7930 -M .0 * 16.7 15.7 106
Grand Targhee 9260 15.6 20.0 78 37.2 44.0 85
Granite Creek 6770 -M .0 * 19.7 25.8 76
Grassy Lake 7265 -M .0 * 47.2 44.9 105
Gros Ventre Summit 8750 .0 .0 * 16.0 17.6 91
Gunsight Pass 9820 .2 .0 * 19.9 19.6 102
Lewis Lake Divide 7850 -M .0 * 45.8 42.6 108
Loomis Park 8240 .2 .0 * 21.3 23.0 93
Phillips Bench 8200 .1 .0 * 35.6 34.5 103
Salt River Summit 7640 -M .0 * 26.0 21.5 121
Snake River Station 6920 .0 .0 * 27.5 29.9 92
Somsen Ranch 6800 -M .0 * 26.8 22.0 122
Spring Creek Divide 9000 5.1 .0 * 37.8 30.8 123
Thumb Divide 7980 .1 .0 * 24.1 24.7 98
Togwotee Pass 9580 .0 10.6 0 26.4 32.9 80
Triple Peak 8500 -M .0 * 33.1 34.4 96
Two Ocean Plateau 9240 4.1 13.4 31 34.4 35.4 97
Willow Creek 8080 .3 .0 * 45.3 44.6 102
Younts Peak 8350 .0 .0 * 18.3 21.2 86
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Basin Index (%) 55* 99
MADISON HEADWATERS IN WYOMING
Black Bear 8170 11.2 12.4 90 50.5 48.2 105
Canyon 7870 .0 -M * 22.0 -M *
Madison Plateau 7750 .0 .0 * 35.7 33.8 106
West Yellowstone 6700 .0 .0 * 23.1 19.6 118
Whiskey Creek 6800 .0 .0 * 32.0 27.3 117
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Basin Index (%) 90* 110
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 2.0 10.2 20 24.0 28.4 85
Canyon 7870 .0 -M * 22.0 -M *
Evening Star 9200 .0 9.6 0 34.9 37.2 94
Fisher Creek 9100 -M 19.8 * -M 43.6 *
Monument Peak 8850 .0 2.4 0 30.6 31.0 99
Northeast Entrance 7350 .0 .0 * 17.0 18.5 92
Parker Peak 9400 .0 4.6 0 29.6 26.5 112
Sylvan Lake 8420 .1 .0 * 29.5 32.2 92
Thumb Divide 7980 .1 .0 * 24.1 24.7 98
Two Ocean Plateau 9240 4.1 13.4 31 34.4 35.4 97
White Mill 8700 .1 8.4 1 28.8 30.7 94
Wolverine 7650 .0 .0 * 16.4 17.2 95
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Basin Index (%) 13 96
WIND RIVER
Burroughs Creek 8750 .0 -M * 16.4 -M *
Castle Creek 8400 .0 .0 * 13.1 14.2 92
Cold Springs 9630 .0 .0 * 17.1 16.6 103
Deer Park 9700 .0 .0 * 34.4 25.4 135
Hobbs Park 10100 .0 .0 * 27.1 22.0 123
Kirwin 9550 .0 .0 * 20.9 19.4 108
Little Warm 9370 .0 .0 * 18.9 18.3 103
South Pass 9040 .0 .0 * 29.6 22.4 132
St. Lawrence Alt 8620 .0 -M * 20.4 -M *
Togwotee Pass 9580 .0 10.6 0 26.4 32.9 80
Townsend Creek 8700 .0 .0 * 22.7 18.8 121
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Basin Index (%) 0* 111
BIGHORN BASIN
Bald Mtn. 9380 .0 1.8 0* 24.7 24.4 101
Bear Trap Meadow 8200 .0 .0 * 17.6 15.8 111
Bone Springs Div 9350 .0 .0 * 19.5 23.0 85
Grave Springs 8550 .0 .0 * 18.1 15.7 115
Kirwin 9550 .0 .0 * 20.9 19.4 108
Marquette 8760 .0 .0 * 20.6 18.8 110
Middle Powder 7760 .0 .0 * 19.1 17.4 110
Owl Creek 8975 .0 .0 * 18.4 13.6 135
Powder River Pass 9480 .0 .0 * 20.4 21.5 95
Shell Creek 9580 .0 .0 * 20.8 21.1 99
Timber Creek 7950 .1 .0 * 18.3 16.1 114
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Basin Index (%) 6* 106
SHOSHONE RIVER
Blackwater 9780 .0 10.6 0 30.0 30.8 97
Evening Star 9200 .0 9.6 0 34.9 37.2 94
Marquette 8760 .0 .0 * 20.6 18.8 110
Sylvan Lake 8420 .1 .0 * 29.5 32.2 92
Sylvan Road 7120 .0 .0 * 18.5 22.0 84
Younts Peak 8350 .0 .0 * 18.3 21.2 86
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Basin Index (%) 0* 94
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * 17.6 15.8 111
Cloud Peak Reservoir 9860 .1 .0 * 25.7 23.6 109
Grave Springs 8550 .0 .0 * 18.1 15.7 115
Hansen Sawmill 8360 .0 .0 * 18.7 16.4 114
Middle Powder 7760 .0 .0 * 19.1 17.4 110
Powder River Pass 9480 .0 .0 * 20.4 21.5 95
Soldier Park 8720 .0 .0 * 18.1 16.8 108
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Basin Index (%) * 108
TONGUE RIVER
Big Goose 7990 .0 .0 * 21.9 20.8 105
Bone Springs Div 9350 .0 .0 * 19.5 23.0 85
Burgess Junction 7880 .0 .0 * 23.4 20.0 117
Dome Lake 8880 .0 .0 * 20.4 22.8 89
Little Goose 8870 .0 .0 * 22.7 22.4 101
Sucker Creek 8880 .0 .0 * 27.4 23.8 115
Tie Creek 6870 .0 .0 * 22.9 20.6 111
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Basin Index (%) * 103
BELLE FOURCHE
Blind Park 6890 .0 .0 * 17.6 19.6 90
Cole Canyon 5910 .0 .0 * 18.7 17.6 106
North Rapid Creek 6130 .1 .0 * 15.8 17.1 92
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Basin Index (%) * 96
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 17.6 19.6 90
North Rapid Creek 6130 .1 .0 * 15.8 17.1 92
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Basin Index (%) * 91
UPPER N. PLATTE
Arapaho Ridge 10976 4.2 .9 467* 32.2 30.6 105
Blackhall Mtn 9839 -M 4.9 * 44.1 41.4 107
Cinnabar Park 9707 -M .0 * 29.5 30.6 96
Columbine 9167 .0 .0 * 32.6 32.4 101
Divide Peak 8730 .0 .0 * 34.0 27.4 124
Joe Wright 10158 4.3 1.8 239* 35.4 35.7 99
Laprele Creek 8390 .0 .0 * 21.0 18.6 113
Med Bow 10512 13.2 -M * 43.3 -M *
Never Summer 10323 6.4 3.6 178 26.2 25.1 104
North French Creek 10153 1.6 8.2 20 38.0 38.6 98
Old Battle 9860 19.7 8.2 240 48.5 44.2 110
Rawah 9069 .0 .0 * 23.6 22.8 104
Sage Creek Basin 7850 -M .0 * 24.2 17.2 141
Sand Lake 10098 -M 12.8 * -M 34.4 *
South Brush Creek 8495 .2 .0 * 20.2 20.6 98
Tower 10620 16.6 18.6 89 58.9 52.3 113
Webber Springs 9260 .1 .0 * 36.4 34.6 105
Whiskey Park 9020 .1 .0 * 40.5 37.7 107
Willow Creek Pass 9523 .1 .0 * 23.2 20.0 116
Zirkel 9338 .0 .0 * 40.4 38.0 106
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Basin Index (%) 129* 107
SWEETWATER
Deer Park 9700 .0 .0 * 34.4 25.4 135
Larsen Creek 9000 -M .0 * 20.9 17.3 121
South Pass 9040 .0 .0 * 29.6 22.4 132
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Basin Index (%) * 130
LOWER N. PLATTE
Casper Mtn. 7920 -M .0 * 25.4 22.3 114
Laprele Creek 8390 .0 .0 * 21.0 18.6 113
Reno Hill 8430 .0 .0 * 26.0 24.8 105
Windy Peak 7915 -M .0 * 17.4 18.2 96
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Basin Index (%) * 107
LARAMIE RIVER
Brooklyn Lake 10250 .2 .0 * 32.8 30.2 109
Cinnabar Park 9707 -M .0 * 29.5 30.6 96
Crow Creek 8335 .0 .0 * 15.5 17.7 88
Deadman Hill 10239 .1 .0 * 28.0 25.6 109
Rawah 9069 .0 .0 * 23.6 22.8 104
Roach 9740 .1 .0 * 28.0 27.0 104
Windy Peak 7915 -M .0 * 17.4 18.2 96
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Basin Index (%) * 102
S. PLATTE
Crow Creek 8335 .0 .0 * 15.5 17.7 88
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Basin Index (%) * 88
LITTLE SNAKE RIVER
Battle Mountain 7498 -M .0 * 25.3 20.2 125
Divide Peak 8730 .0 .0 * 34.0 27.4 124
Elk River 8739 -M .0 * 32.9 25.0 132
Elkhead Divide 8800 .1 -M * 36.4 -M *
Little Snake River 8928 -M .0 * 49.6 42.7 116
Old Battle 9860 19.7 8.2 240 48.5 44.2 110
Sage Creek Basin 7850 -M .0 * 24.2 17.2 141
Sandstone RS 8152 .0 .0 * 29.5 22.6 131
Whiskey Park 9020 .1 .0 * 40.5 37.7 107
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Basin Index (%) 241* 120
UPPER GREEN RIVER
Big Sandy Opening 9080 -M .0 * 21.3 18.2 117
Blind Bull Sum 8650 .3 3.8 8 24.2 24.2 100
East Rim Divide 7930 -M .0 * 16.7 15.7 106
Elkhart Park G.S. 9400 -M .0 * 18.5 17.8 104
Gros Ventre Summit 8750 .0 .0 * 16.0 17.6 91
Gunsight Pass 9820 .2 .0 * 19.9 19.6 102
Indian Creek 9425 .0 .0 * 30.9 27.5 112
Kendall R.S. 7740 .0 .0 * 17.9 18.2 98
Larsen Creek 9000 -M .0 * 20.9 17.3 121
Loomis Park 8240 .2 .0 * 21.3 23.0 93
New Fork Lake 8340 -M .0 * -M 16.2 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 -M .0 * 21.4 19.2 111
Spring Creek Divide 9000 5.1 .0 * 37.8 30.8 123
Triple Peak 8500 -M .0 * 33.1 34.4 96
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Basin Index (%) 153* 106
LOWER GREEN RIVER
Blacks Fork Jct 8869 .3 .0 * 19.0 16.1 118
Buck Pasture 9632 .0 -M * 26.9 -M *
EF Blacks Fork GS 9360 .0 .0 * 19.3 17.7 109
Hams Fork 7840 -M .0 * 20.6 16.9 122
Henrys Fork 10182 -M -M * 20.3 -M *
Hewinta 9500 .0 .0 * 21.2 19.1 111
Hickerson Park 9122 .0 .0 * 17.0 15.1 113
Hole-in-Rock 9168 .1 .0 * 18.1 15.0 121
Indian Creek 9425 .0 .0 * 30.9 27.5 112
Kelley R.S. 8180 -M .0 * 28.3 24.0 118
Spirit Lk 10235 .0 .0 * 27.3 22.7 120
Steel Creek Park 10158 .0 .0 * 26.2 22.8 115
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Basin Index (%) * 116
UPPER BEAR RIVER
Bear River RS 8777 .0 .0 * 20.3 15.4 132
Bug Lake 7987 .1 .0 * 31.4 24.2 130
Burts Miller Ranch 8000 .3 .0 * 17.2 10.4 165
Chalk Creek #1 9171 .2 .0 * 37.4 31.2 120
Giveout 6930 .0 .0 * 20.7 18.1 114
Hayden Fork 9130 .0 .0 * 33.7 27.7 122
Kelley R.S. 8180 -M .0 * 28.3 24.0 118
Lily Lake 9133 .4 .0 * 22.5 22.0 102
Monte Cristo 8932 .8 .0 * 46.2 32.2 143
Salt River Summit 7640 -M .0 * 26.0 21.5 121
Spring Creek Divide 9000 5.1 .0 * 37.8 30.8 123
Trial Lake 9992 2.7 .0 * 39.8 29.5 135
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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.
