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 18 , 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 * 24.7 26.6 93
Blind Bull Sum 8650 .0 .2 0* 24.3 24.4 100
Cottonwood Creek 7670 .1 .0 * 38.2 34.4 111
East Rim Divide 7930 -M .0 * 16.8 16.0 105
Grand Targhee 9260 12.9 17.7 73 37.4 44.6 84
Granite Creek 6770 -M .0 * 19.7 26.1 75
Grassy Lake 7265 -M .0 * 47.2 45.8 103
Gros Ventre Summit 8750 .0 .0 * 16.2 18.0 90
Gunsight Pass 9820 .2 .0 * 20.2 19.9 102
Lewis Lake Divide 7850 -M .0 * 46.0 42.6 108
Loomis Park 8240 .1 .0 * 21.4 23.0 93
Phillips Bench 8200 .2 .0 * 35.7 34.8 103
Salt River Summit 7640 -M .0 * 26.1 22.2 118
Snake River Station 6920 .0 .0 * 27.6 30.2 91
Somsen Ranch 6800 -M .0 * 26.8 22.2 121
Spring Creek Divide 9000 3.1 .0 * 37.8 31.5 120
Thumb Divide 7980 .1 .0 * 24.2 25.0 97
Togwotee Pass 9580 .0 9.8 0 27.0 33.2 81
Triple Peak 8500 -M .0 * 33.3 34.4 97
Two Ocean Plateau 9240 2.2 10.5 21 34.6 36.0 96
Willow Creek 8080 .2 .0 * 45.4 45.2 100
Younts Peak 8350 .0 .0 * 18.8 21.2 89
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Basin Index (%) 50* 99
MADISON HEADWATERS IN WYOMING
Black Bear 8170 8.5 8.8 97 50.8 48.6 105
Canyon 7870 .0 -M * 22.0 -M *
Madison Plateau 7750 .0 .0 * 35.9 33.8 106
West Yellowstone 6700 .0 .0 * 23.0 19.7 117
Whiskey Creek 6800 .0 .0 * 32.3 27.7 117
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Basin Index (%) 97* 109
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 .7 6.6 11 24.4 28.6 85
Canyon 7870 .0 -M * 22.0 -M *
Evening Star 9200 .0 6.7 0 35.6 37.2 96
Fisher Creek 9100 2.7 16.7 16 41.8 43.8 95
Monument Peak 8850 .0 .6 0* 30.7 31.3 98
Northeast Entrance 7350 .1 .0 * 17.1 19.2 89
Parker Peak 9400 .0 1.8 0* 29.9 27.0 111
Sylvan Lake 8420 .1 .0 * 29.6 33.0 90
Thumb Divide 7980 .1 .0 * 24.2 25.0 97
Two Ocean Plateau 9240 2.2 10.5 21 34.6 36.0 96
White Mill 8700 .0 6.0 0 29.1 31.0 94
Wolverine 7650 .0 .0 * 16.6 17.9 93
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Basin Index (%) 12* 95
WIND RIVER
Burroughs Creek 8750 .0 -M * 17.1 -M *
Castle Creek 8400 .0 .0 * 14.3 14.5 99
Cold Springs 9630 .1 .0 * 18.2 17.3 105
Deer Park 9700 .0 .0 * 35.1 25.6 137
Hobbs Park 10100 .0 .0 * 28.8 22.4 129
Kirwin 9550 .0 .0 * 22.1 19.8 112
Little Warm 9370 .0 .0 * 19.1 18.3 104
South Pass 9040 .0 .0 * 29.8 22.4 133
St. Lawrence Alt 8620 .0 -M * 21.3 -M *
Togwotee Pass 9580 .0 9.8 0 27.0 33.2 81
Townsend Creek 8700 .0 .0 * 23.7 20.0 118
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Basin Index (%) 1* 113
BIGHORN BASIN
Bald Mtn. 9380 .0 .8 0* 24.9 25.2 99
Bear Trap Meadow 8200 .0 .0 * 18.8 16.1 117
Bone Springs Div 9350 .0 .0 * 20.3 23.4 87
Grave Springs 8550 .0 .0 * 19.8 15.7 126
Kirwin 9550 .0 .0 * 22.1 19.8 112
Marquette 8760 .0 .0 * 21.7 19.8 110
Middle Powder 7760 .0 .0 * 20.9 17.8 117
Owl Creek 8975 .0 .0 * 19.4 14.2 137
Powder River Pass 9480 .0 .0 * 21.6 21.8 99
Shell Creek 9580 .0 .0 * 21.4 21.6 99
Timber Creek 7950 .1 .0 * 19.8 16.4 121
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Basin Index (%) 12* 109
SHOSHONE RIVER
Blackwater 9780 .0 7.9 0 30.6 30.9 99
Evening Star 9200 .0 6.7 0 35.6 37.2 96
Marquette 8760 .0 .0 * 21.7 19.8 110
Sylvan Lake 8420 .1 .0 * 29.6 33.0 90
Sylvan Road 7120 .0 .0 * 18.7 22.2 84
Younts Peak 8350 .0 .0 * 18.8 21.2 89
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Basin Index (%) 1* 94
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * 18.8 16.1 117
Cloud Peak Reservoir 9860 .1 .0 * 27.6 23.8 116
Grave Springs 8550 .0 .0 * 19.8 15.7 126
Hansen Sawmill 8360 .0 .0 * 21.1 16.9 125
Middle Powder 7760 .0 .0 * 20.9 17.8 117
Powder River Pass 9480 .0 .0 * 21.6 21.8 99
Soldier Park 8720 .0 .0 * 20.0 17.1 117
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Basin Index (%) * 116
TONGUE RIVER
Big Goose 7990 .0 .0 * 23.8 20.9 114
Bone Springs Div 9350 .0 .0 * 20.3 23.4 87
Burgess Junction 7880 .0 .0 * 24.1 20.6 117
Dome Lake 8880 .0 .0 * 21.8 23.4 93
Little Goose 8870 .0 .0 * 24.4 22.6 108
Sucker Creek 8880 .0 .0 * 28.3 24.6 115
Tie Creek 6870 .0 .0 * 23.8 21.1 113
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Basin Index (%) * 106
BELLE FOURCHE
Blind Park 6890 .0 .0 * 17.8 20.2 88
Cole Canyon 5910 .0 .0 * 19.0 18.2 104
North Rapid Creek 6130 .0 .0 * 16.0 17.4 92
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Basin Index (%) * 95
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 17.8 20.2 88
North Rapid Creek 6130 .0 .0 * 16.0 17.4 92
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Basin Index (%) * 90
UPPER N. PLATTE
Arapaho Ridge 10976 2.0 .0 * 32.5 30.6 106
Blackhall Mtn 9839 -M .0 * 44.7 41.4 108
Cinnabar Park 9707 -M .0 * 29.5 30.6 96
Columbine 9167 -M .0 * 32.8 32.5 101
Divide Peak 8730 .0 .0 * 34.4 28.3 122
Joe Wright 10158 .8 .0 * 36.0 35.8 101
Laprele Creek 8390 .0 .0 * 21.7 18.8 115
Med Bow 10512 10.2 -M * 43.6 -M *
Never Summer 10323 4.2 .8 525* 27.1 25.1 108
North French Creek 10153 .2 2.6 8* 38.3 38.6 99
Old Battle 9860 16.1 3.8 424 48.7 45.0 108
Rawah 9069 .1 .0 * 24.0 22.8 105
Sage Creek Basin 7850 -M .0 * 24.6 17.2 143
Sand Lake 10098 10.2 9.4 109 36.9 34.6 107
South Brush Creek 8495 .2 .0 * 20.5 20.6 100
Tower 10620 13.5 14.5 93 59.5 52.9 112
Webber Springs 9260 .0 .0 * 36.4 35.4 103
Whiskey Park 9020 .0 .0 * 40.9 37.7 108
Willow Creek Pass 9523 .0 .0 * 23.5 20.5 115
Zirkel 9338 .0 .0 * 40.5 38.0 107
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Basin Index (%) 152* 108
SWEETWATER
Deer Park 9700 .0 .0 * 35.1 25.6 137
Larsen Creek 9000 -M .0 * 21.8 17.8 122
South Pass 9040 .0 .0 * 29.8 22.4 133
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Basin Index (%) * 132
LOWER N. PLATTE
Casper Mtn. 7920 -M .0 * 27.0 22.3 121
Laprele Creek 8390 .0 .0 * 21.7 18.8 115
Reno Hill 8430 .0 .0 * 26.8 25.0 107
Windy Peak 7915 -M .0 * 18.1 18.5 98
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Basin Index (%) * 111
LARAMIE RIVER
Brooklyn Lake 10250 .0 .0 * 33.0 31.2 106
Cinnabar Park 9707 -M .0 * 29.5 30.6 96
Crow Creek 8335 .0 .0 * 15.8 18.1 87
Deadman Hill 10239 .1 .0 * 28.7 25.8 111
Rawah 9069 .1 .0 * 24.0 22.8 105
Roach 9740 .1 .0 * 28.6 27.0 106
Windy Peak 7915 -M .0 * 18.1 18.5 98
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Basin Index (%) * 102
S. PLATTE
Crow Creek 8335 .0 .0 * 15.8 18.1 87
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Basin Index (%) * 87
LITTLE SNAKE RIVER
Battle Mountain 7498 -M .0 * 25.6 20.5 125
Divide Peak 8730 .0 .0 * 34.4 28.3 122
Elk River 8739 -M .0 * 32.8 25.1 131
Elkhead Divide 8800 .1 -M * 36.7 -M *
Little Snake River 8928 -M .0 * 50.0 42.7 117
Old Battle 9860 16.1 3.8 424 48.7 45.0 108
Sage Creek Basin 7850 -M .0 * 24.6 17.2 143
Sandstone RS 8152 .0 .0 * 29.9 22.8 131
Whiskey Park 9020 .0 .0 * 40.9 37.7 108
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Basin Index (%) 424* 120
UPPER GREEN RIVER
Big Sandy Opening 9080 -M .0 * 21.7 18.5 117
Blind Bull Sum 8650 .0 .2 0* 24.3 24.4 100
East Rim Divide 7930 -M .0 * 16.8 16.0 105
Elkhart Park G.S. 9400 -M .0 * 19.0 18.6 102
Gros Ventre Summit 8750 .0 .0 * 16.2 18.0 90
Gunsight Pass 9820 .2 .0 * 20.2 19.9 102
Indian Creek 9425 -M .0 * 30.8 27.6 112
Kendall R.S. 7740 .0 .0 * 18.2 18.2 100
Larsen Creek 9000 -M .0 * 21.8 17.8 122
Loomis Park 8240 .1 .0 * 21.4 23.0 93
New Fork Lake 8340 -M .0 * -M 16.2 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 -M .0 * 21.7 19.4 112
Spring Creek Divide 9000 3.1 .0 * 37.8 31.5 120
Triple Peak 8500 -M .0 * 33.3 34.4 97
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Basin Index (%) 1700* 106
LOWER GREEN RIVER
Blacks Fork Jct 8869 .4 .0 * 19.2 16.4 117
Buck Pasture 9632 .0 -M * 27.2 -M *
EF Blacks Fork GS 9360 .0 .0 * 19.7 17.7 111
Hams Fork 7840 -M .0 * 20.8 17.0 122
Henrys Fork 10182 -M -M * 20.5 -M *
Hewinta 9500 .0 .0 * 21.5 19.4 111
Hickerson Park 9122 .0 .0 * 17.6 15.2 116
Hole-in-Rock 9168 .1 .0 * 18.9 15.2 124
Indian Creek 9425 -M .0 * 30.8 27.6 112
Kelley R.S. 8180 -M .0 * 28.5 24.4 117
Spirit Lk 10235 .0 .0 * 28.2 22.7 124
Steel Creek Park 10158 .0 .0 * 26.7 22.8 117
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Basin Index (%) * 117
UPPER BEAR RIVER
Bear River RS 8777 .0 .0 * 20.5 15.7 131
Bug Lake 7987 .1 .0 * 31.8 24.6 129
Burts Miller Ranch 8000 .3 .0 * 17.5 10.4 168
Chalk Creek #1 9171 .1 .0 * 37.8 31.3 121
Giveout 6930 .1 .0 * 20.8 18.6 112
Hayden Fork 9130 .0 .0 * 33.9 28.0 121
Kelley R.S. 8180 -M .0 * 28.5 24.4 117
Lily Lake 9133 .3 .0 * 22.8 22.0 104
Monte Cristo 8932 .0 .0 * 46.3 32.9 141
Salt River Summit 7640 -M .0 * 26.1 22.2 118
Spring Creek Divide 9000 3.1 .0 * 37.8 31.5 120
Trial Lake 9992 .3 .0 * 40.0 29.6 135
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Basin Index (%) * 125
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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.
