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: FEBRUARY 16 , 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 10.9 13.8 79 12.5 15.4 81
Blind Bull Sum 8650 14.6 17.2 85 10.4 13.2 79
Cottonwood Creek 7670 15.9 15.6 102 16.8 17.6 95
East Rim Divide 7930 7.7 7.9 97 7.2 8.2 88
Grand Targhee 9260 30.2 30.6 99 18.6 24.4 76
Granite Creek 6770 10.5 12.8 82 9.3 14.0 66
Grassy Lake 7265 19.8 23.1 86 23.6 26.0 91
Gros Ventre Summit 8750 7.6 8.6 88 7.3 8.4 87
Gunsight Pass 9820 8.6 9.3 92 8.3 10.1 82
Lewis Lake Divide 7850 21.5 21.3 101 24.2 24.6 98
Loomis Park 8240 9.8 11.2 88 10.1 12.3 82
Phillips Bench 8200 18.5 18.1 102 19.2 19.2 100
Salt River Summit 7640 11.5 9.6 120 11.4 11.3 101
Snake River Station 6920 12.1 13.4 90 14.5 16.4 88
Somsen Ranch 6800 12.0 9.4 128 13.8 12.2 113
Spring Creek Divide 9000 16.4 17.4 94 15.9 17.5 91
Thumb Divide 7980 12.8 11.0 116 12.4 12.4 100
Togwotee Pass 9580 14.7 16.6 89 14.3 18.1 79
Triple Peak 8500 15.2 16.6 92 15.5 18.4 84
Two Ocean Plateau 9240 19.7 21.1 93 16.1 18.5 87
Willow Creek 8080 23.2 20.8 112 22.7 23.2 98
Younts Peak 8350 10.3 10.8 95 9.0 10.8 83
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Basin Index (%) 96 89
MADISON HEADWATERS IN WYOMING
Black Bear 8170 27.6 27.5 100 27.3 25.8 106
Canyon 7870 9.4 -M * 11.4 -M *
Madison Plateau 7750 18.5 15.6 119 19.5 17.2 113
West Yellowstone 6700 10.4 8.0 130 13.3 10.4 128
Whiskey Creek 6800 13.2 11.0 120 16.3 13.0 125
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Basin Index (%) 112 115
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 11.4 16.4 70 10.3 15.1 68
Canyon 7870 9.4 -M * 11.4 -M *
Evening Star 9200 16.7 20.0 84 19.0 21.2 90
Fisher Creek 9100 22.3 23.8 94 23.2 23.6 98
Monument Peak 8850 14.2 14.8 96 16.5 15.8 104
Northeast Entrance 7350 6.3 7.6 83 8.7 9.9 88
Parker Peak 9400 15.4 15.8 97 15.6 14.8 105
Sylvan Lake 8420 12.8 13.8 93 15.2 17.0 89
Thumb Divide 7980 12.8 11.0 116 12.4 12.4 100
Two Ocean Plateau 9240 19.7 21.1 93 16.1 18.5 87
White Mill 8700 15.8 17.6 90 15.2 16.4 93
Wolverine 7650 7.9 9.0 88 8.6 9.2 93
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Basin Index (%) 91 92
WIND RIVER
Burroughs Creek 8750 6.8 -M * 7.5 -M *
Castle Creek 8400 4.3 5.2 83 4.7 6.4 73
Cold Springs 9630 5.9 5.4 109 7.2 6.6 109
Deer Park 9700 15.1 9.2 164 15.1 11.8 128
Hobbs Park 10100 10.4 8.8 118 9.7 8.0 121
Kirwin 9550 6.3 7.4 85 8.0 8.3 96
Little Warm 9370 6.8 7.2 94 7.5 8.6 87
South Pass 9040 12.0 10.1 119 11.5 10.2 113
St. Lawrence Alt 8620 4.9 -M * 6.5 -M *
Togwotee Pass 9580 14.7 16.6 89 14.3 18.1 79
Townsend Creek 8700 7.6 5.9 129 8.5 7.4 115
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Basin Index (%) 110 101
BIGHORN BASIN
Bald Mtn. 9380 13.2 13.2 100 10.7 10.9 98
Bear Trap Meadow 8200 5.9 4.5 131 6.2 5.6 111
Bone Springs Div 9350 8.3 11.0 75 7.5 10.4 72
Grave Springs 8550 7.5 5.7 132 8.0 6.4 125
Kirwin 9550 6.3 7.4 85 8.0 8.3 96
Marquette 8760 5.8 4.7 123 6.0 6.3 95
Middle Powder 7760 8.3 7.0 119 7.1 6.5 109
Owl Creek 8975 5.0 3.8 132 5.4 4.3 126
Powder River Pass 9480 7.0 7.8 90 8.6 8.8 98
Shell Creek 9580 8.3 10.4 80 8.8 9.5 93
Timber Creek 7950 3.9 3.2 122 4.2 5.2 81
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Basin Index (%) 101 98
SHOSHONE RIVER
Blackwater 9780 13.0 16.2 80 13.0 15.7 83
Evening Star 9200 16.7 20.0 84 19.0 21.2 90
Marquette 8760 5.8 4.7 123 6.0 6.3 95
Sylvan Lake 8420 12.8 13.8 93 15.2 17.0 89
Sylvan Road 7120 7.0 8.8 80 10.1 13.1 77
Younts Peak 8350 10.3 10.8 95 9.0 10.8 83
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Basin Index (%) 88 86
POWDER RIVER
Bear Trap Meadow 8200 5.9 4.5 131 6.2 5.6 111
Cloud Peak Reservoir 9860 9.4 9.7 97 9.3 9.1 102
Grave Springs 8550 7.5 5.7 132 8.0 6.4 125
Hansen Sawmill 8360 4.9 4.6 107 5.2 5.6 93
Middle Powder 7760 8.3 7.0 119 7.1 6.5 109
Powder River Pass 9480 7.0 7.8 90 8.6 8.8 98
Soldier Park 8720 3.0 4.4 68 4.1 6.4 64
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Basin Index (%) 105 100
TONGUE RIVER
Big Goose 7990 6.8 5.5 124 7.6 7.0 109
Bone Springs Div 9350 8.3 11.0 75 7.5 10.4 72
Burgess Junction 7880 8.9 7.4 120 10.2 8.3 123
Dome Lake 8880 6.1 7.8 78 8.0 8.4 95
Little Goose 8870 7.5 6.6 114 8.4 8.2 102
Sucker Creek 8880 9.9 8.4 118 12.0 9.4 128
Tie Creek 6870 6.9 3.8 182 9.8 7.6 129
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Basin Index (%) 108 107
BELLE FOURCHE
Blind Park 6890 5.9 5.6 105 7.0 7.3 96
Cole Canyon 5910 5.3 4.1 129 6.5 6.0 108
North Rapid Creek 6130 5.2 5.3 98 6.0 6.2 97
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Basin Index (%) 109 100
CHEYENNE RIVER BASIN
Blind Park 6890 5.9 5.6 105 7.0 7.3 96
North Rapid Creek 6130 5.2 5.3 98 6.0 6.2 97
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Basin Index (%) 102 96
UPPER N. PLATTE
Arapaho Ridge 10976 17.5 16.1 109 17.4 16.0 109
Blackhall Mtn 9839 25.8 20.4 126 25.5 20.6 124
Cinnabar Park 9707 -M 15.0 * 16.2 17.0 95
Columbine 9167 20.3 16.6 122 18.9 17.2 110
Divide Peak 8730 18.2 13.8 132 19.0 15.1 126
Joe Wright 10158 17.4 14.2 123 19.7 18.0 109
Laprele Creek 8390 8.3 6.3 132 8.6 7.7 112
Med Bow 10512 26.2 -M * 23.9 -M *
Never Summer 10323 18.3 14.0 131 13.0 11.6 112
North French Creek 10153 20.6 19.3 107 20.6 18.6 111
Old Battle 9860 26.4 21.8 121 26.8 24.5 109
Rawah 9069 11.1 8.2 135 12.7 11.6 109
Sage Creek Basin 7850 16.7 10.1 165 14.7 9.7 152
Sand Lake 10098 19.0 18.2 104 18.5 16.6 111
South Brush Creek 8495 11.3 8.2 138 10.5 9.4 112
Tower 10620 37.8 30.8 123 35.7 28.2 127
Webber Springs 9260 18.8 15.0 125 20.4 18.2 112
Whiskey Park 9020 27.6 19.4 142 25.6 20.4 125
Willow Creek Pass 9523 12.0 9.6 125 12.3 9.6 128
Zirkel 9338 21.0 20.8 101 -M 22.6 *
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Basin Index (%) 123 116
SWEETWATER
Deer Park 9700 15.1 9.2 164 15.1 11.8 128
Larsen Creek 9000 6.6 7.4 89 9.0 9.6 94
South Pass 9040 12.0 10.1 119 11.5 10.2 113
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Basin Index (%) 126 113
LOWER N. PLATTE
Casper Mtn. 7920 10.1 8.6 117 9.9 9.0 110
Laprele Creek 8390 8.3 6.3 132 8.6 7.7 112
Reno Hill 8430 10.8 8.8 123 12.2 9.4 130
Windy Peak 7915 -M 5.5 * -M 7.0 *
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Basin Index (%) 123 118
LARAMIE RIVER
Brooklyn Lake 10250 16.2 14.8 109 16.9 15.0 113
Cinnabar Park 9707 -M 15.0 * 16.2 17.0 95
Crow Creek 8335 4.2 5.8 72 6.5 7.2 90
Deadman Hill 10239 13.0 11.9 109 12.3 12.0 102
Rawah 9069 11.1 8.2 135 12.7 11.6 109
Roach 9740 13.0 11.4 114 14.4 13.2 109
Windy Peak 7915 -M 5.5 * -M 7.0 *
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Basin Index (%) 110 104
S. PLATTE
Crow Creek 8335 4.2 5.8 72 6.5 7.2 90
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Basin Index (%) 72 90
LITTLE SNAKE RIVER
Battle Mountain 7498 12.8 8.8 145 16.7 11.1 150
Divide Peak 8730 18.2 13.8 132 19.0 15.1 126
Elk River 8739 19.2 13.8 139 18.6 13.8 135
Elkhead Divide 8800 21.5 -M * -M -M *
Little Snake River 8928 25.7 20.0 128 29.6 24.3 122
Old Battle 9860 26.4 21.8 121 26.8 24.5 109
Sage Creek Basin 7850 16.7 10.1 165 14.7 9.7 152
Sandstone RS 8152 16.5 9.6 172 18.1 13.2 137
Whiskey Park 9020 27.6 19.4 142 25.6 20.4 125
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Basin Index (%) 139 128
UPPER GREEN RIVER
Big Sandy Opening 9080 9.4 9.0 104 9.3 8.6 108
Blind Bull Sum 8650 14.6 17.2 85 10.4 13.2 79
East Rim Divide 7930 7.7 7.9 97 7.2 8.2 88
Elkhart Park G.S. 9400 8.0 8.6 93 7.3 9.0 81
Gros Ventre Summit 8750 7.6 8.6 88 7.3 8.4 87
Gunsight Pass 9820 8.6 9.3 92 8.3 10.1 82
Indian Creek 9425 17.8 16.3 109 15.2 14.4 106
Kendall R.S. 7740 7.5 8.6 87 8.1 10.0 81
Larsen Creek 9000 6.6 7.4 89 9.0 9.6 94
Loomis Park 8240 9.8 11.2 88 10.1 12.3 82
New Fork Lake 8340 7.1 7.6 93 -M 7.7 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 8.8 9.2 96 9.9 9.7 102
Spring Creek Divide 9000 16.4 17.4 94 15.9 17.5 91
Triple Peak 8500 15.2 16.6 92 15.5 18.4 84
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Basin Index (%) 94 89
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.9 5.9 151 9.2 9.1 101
Buck Pasture 9632 12.4 -M * 14.4 -M *
EF Blacks Fork GS 9360 9.6 7.7 125 7.4 7.6 97
Hams Fork 7840 9.7 8.4 115 9.3 7.8 119
Henrys Fork 10182 -M -M * 11.8 -M *
Hewinta 9500 8.1 6.4 127 10.2 9.6 106
Hickerson Park 9122 6.4 5.2 123 7.6 7.0 109
Hole-in-Rock 9168 5.4 4.9 110 6.8 6.8 100
Indian Creek 9425 17.8 16.3 109 15.2 14.4 106
Kelley R.S. 8180 12.8 10.6 121 13.6 11.8 115
Spirit Lk 10235 12.1 8.1 149 12.2 11.7 104
Steel Creek Park 10158 13.0 10.1 129 12.7 11.2 113
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Basin Index (%) 124 107
UPPER BEAR RIVER
Bear River RS 8777 8.3 6.4 130 10.0 8.3 120
Bug Lake 7987 17.4 13.4 130 14.3 13.3 108
Burts Miller Ranch 8000 6.7 5.0 134 9.7 5.5 176
Chalk Creek #1 9171 18.9 15.0 126 19.4 16.0 121
Giveout 6930 8.1 7.2 112 9.7 9.2 105
Hayden Fork 9130 12.5 10.2 123 17.3 14.4 120
Kelley R.S. 8180 12.8 10.6 121 13.6 11.8 115
Lily Lake 9133 11.0 9.0 122 11.4 11.0 104
Monte Cristo 8932 23.7 18.2 130 22.5 18.2 124
Salt River Summit 7640 11.5 9.6 120 11.4 11.3 101
Spring Creek Divide 9000 16.4 17.4 94 15.9 17.5 91
Trial Lake 9992 21.8 15.6 140 21.8 16.2 135
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Basin Index (%) 123 116
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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.
