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 FRIDAY: FEBRUARY 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 10.5 12.0 88 11.9 13.9 86
Blind Bull Sum 8650 14.0 15.4 91 10.1 12.0 84
Cottonwood Creek 7670 14.7 14.0 105 15.9 15.9 100
East Rim Divide 7930 7.5 7.0 107 7.2 7.6 95
Grand Targhee 9260 28.9 27.4 105 17.8 20.9 85
Granite Creek 6770 10.1 10.8 94 9.1 12.6 72
Grassy Lake 7265 18.4 20.6 89 22.1 23.4 94
Gros Ventre Summit 8750 7.5 8.0 94 7.4 7.8 95
Gunsight Pass 9820 8.4 8.6 98 8.3 9.0 92
Lewis Lake Divide 7850 21.1 19.5 108 23.2 21.6 107
Loomis Park 8240 9.5 10.0 95 9.7 10.8 90
Phillips Bench 8200 17.2 16.0 108 18.0 17.2 105
Salt River Summit 7640 11.1 7.8 142 11.0 9.8 112
Snake River Station 6920 11.5 11.5 100 13.6 15.4 88
Somsen Ranch 6800 11.4 8.4 136 13.0 11.2 116
Spring Creek Divide 9000 15.5 15.4 101 15.9 15.0 106
Thumb Divide 7980 12.7 9.8 130 12.2 11.6 105
Togwotee Pass 9580 14.1 14.8 95 13.7 16.0 86
Triple Peak 8500 14.5 14.8 98 14.9 16.0 93
Two Ocean Plateau 9240 19.0 19.1 99 15.5 16.6 93
Willow Creek 8080 21.6 17.6 123 21.2 21.0 101
Younts Peak 8350 10.1 9.6 105 9.0 9.6 94
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Basin Index (%) 104 95
MADISON HEADWATERS IN WYOMING
Black Bear 8170 26.2 23.0 114 26.2 23.5 111
Canyon 7870 9.0 -M * 11.0 -M *
Madison Plateau 7750 18.1 14.0 129 18.8 15.4 122
West Yellowstone 6700 10.1 7.0 144 12.9 9.2 140
Whiskey Creek 6800 12.8 9.2 139 16.4 12.4 132
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Basin Index (%) 126 123
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 10.9 14.9 73 9.9 13.4 74
Canyon 7870 9.0 -M * 11.0 -M *
Evening Star 9200 15.6 17.9 87 18.1 19.6 92
Fisher Creek 9100 21.3 21.7 98 22.4 20.9 107
Monument Peak 8850 13.1 13.6 96 15.4 14.6 105
Northeast Entrance 7350 6.1 6.6 92 8.4 8.4 100
Parker Peak 9400 14.7 14.2 104 15.0 13.4 112
Sylvan Lake 8420 12.2 12.6 97 14.8 15.2 97
Thumb Divide 7980 12.7 9.8 130 12.2 11.6 105
Two Ocean Plateau 9240 19.0 19.1 99 15.5 16.6 93
White Mill 8700 15.1 16.2 93 14.8 15.4 96
Wolverine 7650 7.7 8.2 94 8.3 8.5 98
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Basin Index (%) 96 98
WIND RIVER
Burroughs Creek 8750 6.9 -M * 7.4 -M *
Castle Creek 8400 4.4 4.6 96 5.0 6.0 83
Cold Springs 9630 5.6 5.0 112 6.8 6.2 110
Deer Park 9700 15.0 8.0 188 15.1 10.2 148
Hobbs Park 10100 10.3 7.9 130 9.7 7.2 135
Kirwin 9550 6.0 7.0 86 7.7 7.9 97
Little Warm 9370 6.7 6.6 102 7.6 7.8 97
South Pass 9040 11.7 8.2 143 11.5 9.4 122
St. Lawrence Alt 8620 5.0 -M * 6.7 -M *
Togwotee Pass 9580 14.1 14.8 95 13.7 16.0 86
Townsend Creek 8700 7.5 5.4 139 8.4 6.7 125
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Basin Index (%) 120 110
BIGHORN BASIN
Bald Mtn. 9380 11.9 11.4 104 10.0 9.8 102
Bear Trap Meadow 8200 5.8 3.8 153 6.3 5.2 121
Bone Springs Div 9350 8.2 10.4 79 7.5 9.4 80
Grave Springs 8550 6.9 4.8 144 7.3 5.6 130
Kirwin 9550 6.0 7.0 86 7.7 7.9 97
Marquette 8760 5.0 4.2 119 5.3 6.0 88
Middle Powder 7760 7.6 6.1 125 6.7 6.0 112
Owl Creek 8975 5.1 3.4 150 5.6 3.9 144
Powder River Pass 9480 6.6 7.2 92 8.4 8.2 102
Shell Creek 9580 7.9 9.2 86 8.6 8.7 99
Timber Creek 7950 3.7 3.0 123 4.3 4.8 90
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Basin Index (%) 106 103
SHOSHONE RIVER
Blackwater 9780 12.6 14.8 85 12.7 14.2 89
Evening Star 9200 15.6 17.9 87 18.1 19.6 92
Marquette 8760 5.0 4.2 119 5.3 6.0 88
Sylvan Lake 8420 12.2 12.6 97 14.8 15.2 97
Sylvan Road 7120 6.8 8.2 83 9.7 11.9 82
Younts Peak 8350 10.1 9.6 105 9.0 9.6 94
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Basin Index (%) 93 91
POWDER RIVER
Bear Trap Meadow 8200 5.8 3.8 153 6.3 5.2 121
Cloud Peak Reservoir 9860 8.8 8.8 100 8.9 8.3 107
Grave Springs 8550 6.9 4.8 144 7.3 5.6 130
Hansen Sawmill 8360 4.9 4.3 114 5.2 5.4 96
Middle Powder 7760 7.6 6.1 125 6.7 6.0 112
Powder River Pass 9480 6.6 7.2 92 8.4 8.2 102
Soldier Park 8720 3.4 3.7 92 4.8 5.6 86
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Basin Index (%) 114 107
TONGUE RIVER
Big Goose 7990 6.4 4.8 133 6.9 6.2 111
Bone Springs Div 9350 8.2 10.4 79 7.5 9.4 80
Burgess Junction 7880 8.1 6.6 123 9.9 7.6 130
Dome Lake 8880 5.8 6.8 85 7.6 8.0 95
Little Goose 8870 6.9 6.1 113 7.8 7.4 105
Sucker Creek 8880 8.8 7.7 114 10.9 8.4 130
Tie Creek 6870 6.2 3.5 177 9.1 7.0 130
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Basin Index (%) 110 111
BELLE FOURCHE
Blind Park 6890 5.3 4.8 110 6.7 6.6 102
Cole Canyon 5910 4.7 3.2 147 5.9 5.5 107
North Rapid Creek 6130 4.8 4.8 100 5.5 5.2 106
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Basin Index (%) 116 105
CHEYENNE RIVER BASIN
Blind Park 6890 5.3 4.8 110 6.7 6.6 102
North Rapid Creek 6130 4.8 4.8 100 5.5 5.2 106
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Basin Index (%) 105 103
UPPER N. PLATTE
Arapaho Ridge 10976 16.8 14.1 119 16.7 14.0 119
Blackhall Mtn 9839 23.8 18.2 131 23.9 19.0 126
Cinnabar Park 9707 -M 13.3 * 15.6 15.9 98
Columbine 9167 19.1 14.5 132 18.0 15.4 117
Divide Peak 8730 17.0 12.4 137 18.7 14.0 134
Joe Wright 10158 16.4 11.8 139 18.6 15.8 118
Laprele Creek 8390 7.7 5.4 143 8.0 7.0 114
Med Bow 10512 25.0 -M * 22.9 -M *
Never Summer 10323 17.3 11.7 148 12.3 10.8 114
North French Creek 10153 19.6 17.0 115 19.6 16.8 117
Old Battle 9860 25.2 19.2 131 25.7 22.3 115
Rawah 9069 10.5 6.8 154 11.8 10.0 118
Sage Creek Basin 7850 14.9 9.4 159 14.3 8.8 162
Sand Lake 10098 17.6 16.6 106 17.6 15.5 114
South Brush Creek 8495 10.6 7.4 143 10.0 8.7 115
Tower 10620 35.9 26.2 137 31.7 25.6 124
Webber Springs 9260 17.8 13.4 133 19.5 16.5 118
Whiskey Park 9020 26.2 16.6 158 24.4 18.2 134
Willow Creek Pass 9523 11.5 8.1 142 11.7 8.4 139
Zirkel 9338 20.2 16.9 120 22.4 19.6 114
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Basin Index (%) 134 121
SWEETWATER
Deer Park 9700 15.0 8.0 188 15.1 10.2 148
Larsen Creek 9000 7.1 5.2 137 9.2 7.8 118
South Pass 9040 11.7 8.2 143 11.5 9.4 122
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Basin Index (%) 158 131
LOWER N. PLATTE
Casper Mtn. 7920 9.1 7.6 120 9.1 8.6 106
Laprele Creek 8390 7.7 5.4 143 8.0 7.0 114
Reno Hill 8430 9.8 8.2 120 11.2 8.6 130
Windy Peak 7915 6.7 4.4 152 7.7 6.4 120
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Basin Index (%) 130 118
LARAMIE RIVER
Brooklyn Lake 10250 15.6 13.0 120 16.3 13.6 120
Cinnabar Park 9707 -M 13.3 * 15.6 15.9 98
Crow Creek 8335 4.0 5.3 75 6.1 6.5 94
Deadman Hill 10239 12.0 11.1 108 11.2 10.8 104
Rawah 9069 10.5 6.8 154 11.8 10.0 118
Roach 9740 12.6 9.6 131 14.1 11.8 119
Windy Peak 7915 6.7 4.4 152 7.7 6.4 120
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Basin Index (%) 122 110
S. PLATTE
Crow Creek 8335 4.0 5.3 75 6.1 6.5 94
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Basin Index (%) 75 94
LITTLE SNAKE RIVER
Battle Mountain 7498 12.4 7.5 165 16.1 10.2 158
Divide Peak 8730 17.0 12.4 137 18.7 14.0 134
Elk River 8739 18.6 11.4 163 17.5 12.0 146
Elkhead Divide 8800 21.0 -M * 21.2 -M *
Little Snake River 8928 24.6 16.4 150 28.5 22.6 126
Old Battle 9860 25.2 19.2 131 25.7 22.3 115
Sage Creek Basin 7850 14.9 9.4 159 14.3 8.8 162
Sandstone RS 8152 16.0 8.2 195 17.6 11.5 153
Whiskey Park 9020 26.2 16.6 158 24.4 18.2 134
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Basin Index (%) 153 136
UPPER GREEN RIVER
Big Sandy Opening 9080 9.5 8.2 116 9.3 8.0 116
Blind Bull Sum 8650 14.0 15.4 91 10.1 12.0 84
East Rim Divide 7930 7.5 7.0 107 7.2 7.6 95
Elkhart Park G.S. 9400 8.0 7.8 103 7.2 8.0 90
Gros Ventre Summit 8750 7.5 8.0 94 7.4 7.8 95
Gunsight Pass 9820 8.4 8.6 98 8.3 9.0 92
Indian Creek 9425 17.2 14.2 121 14.7 13.0 113
Kendall R.S. 7740 7.3 7.8 94 7.7 8.8 88
Larsen Creek 9000 7.1 5.2 137 9.2 7.8 118
Loomis Park 8240 9.5 10.0 95 9.7 10.8 90
New Fork Lake 8340 7.1 6.8 104 -M 6.8 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 8.4 8.2 102 9.5 8.8 108
Spring Creek Divide 9000 15.5 15.4 101 15.9 15.0 106
Triple Peak 8500 14.5 14.8 98 14.9 16.0 93
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Basin Index (%) 103 99
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.6 5.0 172 8.8 7.8 113
Buck Pasture 9632 12.1 -M * 13.8 -M *
EF Blacks Fork GS 9360 9.4 6.4 147 7.2 6.8 106
Hams Fork 7840 9.5 7.1 134 9.1 7.0 130
Henrys Fork 10182 -M -M * 9.5 -M *
Hewinta 9500 7.8 5.5 142 9.9 8.9 111
Hickerson Park 9122 6.3 4.2 150 7.1 6.4 111
Hole-in-Rock 9168 5.8 4.4 132 6.8 6.4 106
Indian Creek 9425 17.2 14.2 121 14.7 13.0 113
Kelley R.S. 8180 12.5 9.2 136 13.2 11.0 120
Spirit Lk 10235 12.1 7.0 173 11.8 10.5 112
Steel Creek Park 10158 12.3 8.8 140 12.2 9.7 126
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Basin Index (%) 141 115
UPPER BEAR RIVER
Bear River RS 8777 8.1 5.5 147 9.6 7.4 130
Bug Lake 7987 16.6 10.6 157 13.8 11.7 118
Burts Miller Ranch 8000 6.5 4.0 162 9.5 5.1 186
Chalk Creek #1 9171 18.4 12.4 148 18.8 15.2 124
Giveout 6930 7.9 6.0 132 9.3 7.8 119
Hayden Fork 9130 12.2 8.6 142 16.4 12.7 129
Kelley R.S. 8180 12.5 9.2 136 13.2 11.0 120
Lily Lake 9133 10.9 7.5 145 10.9 9.8 111
Monte Cristo 8932 22.9 14.8 155 21.5 16.2 133
Salt River Summit 7640 11.1 7.8 142 11.0 9.8 112
Spring Creek Divide 9000 15.5 15.4 101 15.9 15.0 106
Trial Lake 9992 21.2 12.8 166 21.4 14.0 153
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Basin Index (%) 143 126
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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.
