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 MONDAY: FEBRUARY 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 10.8 12.2 89 12.2 14.3 85
Blind Bull Sum 8650 14.4 15.6 92 10.3 12.2 84
Cottonwood Creek 7670 15.1 14.2 106 16.1 16.2 99
East Rim Divide 7930 7.6 7.0 109 7.3 7.6 96
Grand Targhee 9260 29.7 28.0 106 18.3 22.0 83
Granite Creek 6770 10.3 11.0 94 9.4 12.9 73
Grassy Lake 7265 19.6 21.0 93 23.2 23.6 98
Gros Ventre Summit 8750 7.7 8.0 96 7.6 7.8 97
Gunsight Pass 9820 8.5 8.6 99 8.4 9.1 92
Lewis Lake Divide 7850 21.6 19.5 111 23.8 21.9 109
Loomis Park 8240 9.8 10.2 96 9.9 10.8 92
Phillips Bench 8200 17.8 16.4 109 18.5 17.8 104
Salt River Summit 7640 11.4 8.1 141 11.3 10.0 113
Snake River Station 6920 12.0 11.7 103 14.5 15.6 93
Somsen Ranch 6800 11.5 8.9 129 13.3 11.4 117
Spring Creek Divide 9000 16.1 15.6 103 16.0 15.2 105
Thumb Divide 7980 12.8 9.8 131 12.4 11.6 107
Togwotee Pass 9580 14.2 15.0 95 13.7 16.2 85
Triple Peak 8500 14.8 15.0 99 15.5 16.2 96
Two Ocean Plateau 9240 19.3 19.6 98 15.9 17.0 94
Willow Creek 8080 22.3 18.2 123 21.7 21.6 100
Younts Peak 8350 10.4 9.6 108 9.2 9.8 94
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Basin Index (%) 105 96
MADISON HEADWATERS IN WYOMING
Black Bear 8170 26.9 23.6 114 26.8 23.6 114
Canyon 7870 9.3 -M * 11.3 -M *
Madison Plateau 7750 18.4 14.1 130 19.1 15.6 122
West Yellowstone 6700 10.2 7.3 140 13.0 9.5 137
Whiskey Creek 6800 13.2 9.5 139 17.2 12.7 135
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Basin Index (%) 126 124
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 11.0 15.0 73 10.1 13.6 74
Canyon 7870 9.3 -M * 11.3 -M *
Evening Star 9200 15.9 18.0 88 18.5 19.8 93
Fisher Creek 9100 21.7 22.0 99 22.8 21.4 107
Monument Peak 8850 13.3 13.6 98 15.5 15.0 103
Northeast Entrance 7350 6.2 6.7 93 8.5 8.8 97
Parker Peak 9400 15.0 14.6 103 15.4 13.8 112
Sylvan Lake 8420 12.4 13.0 95 15.2 15.6 97
Thumb Divide 7980 12.8 9.8 131 12.4 11.6 107
Two Ocean Plateau 9240 19.3 19.6 98 15.9 17.0 94
White Mill 8700 15.4 16.3 94 15.0 15.4 97
Wolverine 7650 7.7 8.3 93 8.4 8.5 99
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Basin Index (%) 96 98
WIND RIVER
Burroughs Creek 8750 7.0 -M * 7.4 -M *
Castle Creek 8400 4.5 4.6 98 5.1 6.2 82
Cold Springs 9630 5.5 5.2 106 6.7 6.2 108
Deer Park 9700 15.0 8.4 179 15.2 10.6 143
Hobbs Park 10100 10.3 8.1 127 9.6 7.4 130
Kirwin 9550 6.0 7.1 85 7.7 8.0 96
Little Warm 9370 6.7 6.7 100 7.6 7.8 97
South Pass 9040 11.7 8.3 141 11.6 9.4 123
St. Lawrence Alt 8620 4.9 -M * 6.6 -M *
Togwotee Pass 9580 14.2 15.0 95 13.7 16.2 85
Townsend Creek 8700 7.5 5.6 134 8.4 7.0 120
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Basin Index (%) 118 109
BIGHORN BASIN
Bald Mtn. 9380 12.1 11.7 103 10.2 9.9 103
Bear Trap Meadow 8200 5.9 4.0 148 6.4 5.4 119
Bone Springs Div 9350 8.3 10.4 80 7.5 9.5 79
Grave Springs 8550 7.0 5.0 140 7.4 5.8 128
Kirwin 9550 6.0 7.1 85 7.7 8.0 96
Marquette 8760 4.8 4.2 114 5.3 6.1 87
Middle Powder 7760 7.7 6.2 124 6.8 6.1 111
Owl Creek 8975 5.0 3.6 139 5.6 4.0 140
Powder River Pass 9480 6.6 7.2 92 8.4 8.4 100
Shell Creek 9580 8.1 9.4 86 8.7 8.8 99
Timber Creek 7950 3.7 3.2 116 4.2 5.0 84
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Basin Index (%) 104 102
SHOSHONE RIVER
Blackwater 9780 12.8 15.1 85 12.8 14.8 86
Evening Star 9200 15.9 18.0 88 18.5 19.8 93
Marquette 8760 4.8 4.2 114 5.3 6.1 87
Sylvan Lake 8420 12.4 13.0 95 15.2 15.6 97
Sylvan Road 7120 6.7 8.4 80 9.8 12.0 82
Younts Peak 8350 10.4 9.6 108 9.2 9.8 94
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Basin Index (%) 92 91
POWDER RIVER
Bear Trap Meadow 8200 5.9 4.0 148 6.4 5.4 119
Cloud Peak Reservoir 9860 8.8 8.9 99 8.9 8.4 106
Grave Springs 8550 7.0 5.0 140 7.4 5.8 128
Hansen Sawmill 8360 4.9 4.3 114 5.2 5.4 96
Middle Powder 7760 7.7 6.2 124 6.8 6.1 111
Powder River Pass 9480 6.6 7.2 92 8.4 8.4 100
Soldier Park 8720 3.4 4.2 81 4.8 6.0 80
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Basin Index (%) 111 105
TONGUE RIVER
Big Goose 7990 6.4 5.2 123 6.9 6.4 108
Bone Springs Div 9350 8.3 10.4 80 7.5 9.5 79
Burgess Junction 7880 8.1 6.7 121 9.5 7.8 122
Dome Lake 8880 5.9 7.0 84 7.7 8.0 96
Little Goose 8870 6.9 6.3 110 7.8 7.6 103
Sucker Creek 8880 8.8 7.8 113 11.0 8.5 129
Tie Creek 6870 6.2 3.6 172 9.1 7.2 126
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Basin Index (%) 108 108
BELLE FOURCHE
Blind Park 6890 5.3 5.1 104 6.8 6.6 103
Cole Canyon 5910 4.7 3.5 134 6.0 5.6 107
North Rapid Creek 6130 4.9 4.8 102 5.5 5.3 104
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Basin Index (%) 111 105
CHEYENNE RIVER BASIN
Blind Park 6890 5.3 5.1 104 6.8 6.6 103
North Rapid Creek 6130 4.9 4.8 102 5.5 5.3 104
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Basin Index (%) 103 103
UPPER N. PLATTE
Arapaho Ridge 10976 17.0 14.2 120 16.7 14.0 119
Blackhall Mtn 9839 24.2 19.0 127 24.2 19.1 127
Cinnabar Park 9707 -M 13.7 * 15.8 16.2 98
Columbine 9167 19.4 15.1 128 18.4 16.0 115
Divide Peak 8730 17.3 13.0 133 19.0 14.4 132
Joe Wright 10158 16.6 12.0 138 18.6 16.2 115
Laprele Creek 8390 7.8 5.6 139 8.1 7.1 114
Med Bow 10512 25.3 -M * 23.2 -M *
Never Summer 10323 17.2 12.0 143 12.4 11.1 112
North French Creek 10153 20.1 17.6 114 19.9 17.4 114
Old Battle 9860 25.5 20.1 127 26.4 22.7 116
Rawah 9069 10.6 7.5 141 11.8 10.6 111
Sage Creek Basin 7850 15.0 9.6 156 14.5 8.8 165
Sand Lake 10098 18.0 17.0 106 18.0 15.8 114
South Brush Creek 8495 10.9 7.6 143 10.2 8.9 115
Tower 10620 36.4 26.2 139 32.1 25.6 125
Webber Springs 9260 17.9 13.6 132 19.8 16.7 119
Whiskey Park 9020 26.8 17.3 155 24.8 18.2 136
Willow Creek Pass 9523 11.5 8.3 139 11.8 8.5 139
Zirkel 9338 20.5 18.4 111 22.7 21.0 108
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Basin Index (%) 131 120
SWEETWATER
Deer Park 9700 15.0 8.4 179 15.2 10.6 143
Larsen Creek 9000 7.0 6.2 113 9.2 8.0 115
South Pass 9040 11.7 8.3 141 11.6 9.4 123
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Basin Index (%) 147 129
LOWER N. PLATTE
Casper Mtn. 7920 9.0 7.8 115 9.2 8.8 105
Laprele Creek 8390 7.8 5.6 139 8.1 7.1 114
Reno Hill 8430 9.9 8.3 119 11.3 8.7 130
Windy Peak 7915 6.8 4.8 142 7.7 6.4 120
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Basin Index (%) 126 117
LARAMIE RIVER
Brooklyn Lake 10250 15.7 13.6 115 16.5 13.8 120
Cinnabar Park 9707 -M 13.7 * 15.8 16.2 98
Crow Creek 8335 3.9 5.4 72 6.3 6.6 95
Deadman Hill 10239 12.2 11.2 109 11.3 11.2 101
Rawah 9069 10.6 7.5 141 11.8 10.6 111
Roach 9740 12.8 10.2 125 14.3 12.2 117
Windy Peak 7915 6.8 4.8 142 7.7 6.4 120
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Basin Index (%) 118 109
S. PLATTE
Crow Creek 8335 3.9 5.4 72 6.3 6.6 95
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Basin Index (%) 72 95
LITTLE SNAKE RIVER
Battle Mountain 7498 12.9 7.6 170 16.5 10.4 159
Divide Peak 8730 17.3 13.0 133 19.0 14.4 132
Elk River 8739 19.0 11.8 161 17.6 12.4 142
Elkhead Divide 8800 21.4 -M * 21.3 -M *
Little Snake River 8928 25.0 16.8 149 28.6 22.6 127
Old Battle 9860 25.5 20.1 127 26.4 22.7 116
Sage Creek Basin 7850 15.0 9.6 156 14.5 8.8 165
Sandstone RS 8152 16.4 8.4 195 17.9 11.8 152
Whiskey Park 9020 26.8 17.3 155 24.8 18.2 136
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Basin Index (%) 151 136
UPPER GREEN RIVER
Big Sandy Opening 9080 9.7 8.5 114 9.6 8.1 119
Blind Bull Sum 8650 14.4 15.6 92 10.3 12.2 84
East Rim Divide 7930 7.6 7.0 109 7.3 7.6 96
Elkhart Park G.S. 9400 8.1 8.0 101 7.3 8.4 87
Gros Ventre Summit 8750 7.7 8.0 96 7.6 7.8 97
Gunsight Pass 9820 8.5 8.6 99 8.4 9.1 92
Indian Creek 9425 17.5 14.6 120 15.0 13.0 115
Kendall R.S. 7740 7.6 7.8 97 7.9 8.9 89
Larsen Creek 9000 7.0 6.2 113 9.2 8.0 115
Loomis Park 8240 9.8 10.2 96 9.9 10.8 92
New Fork Lake 8340 7.2 6.8 106 -M 6.8 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 8.7 8.4 104 9.8 9.0 109
Spring Creek Divide 9000 16.1 15.6 103 16.0 15.2 105
Triple Peak 8500 14.8 15.0 99 15.5 16.2 96
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Basin Index (%) 103 100
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.8 5.2 169 9.0 8.0 112
Buck Pasture 9632 12.2 -M * 14.0 -M *
EF Blacks Fork GS 9360 9.4 6.9 136 7.2 7.0 103
Hams Fork 7840 9.7 7.4 131 9.2 7.4 124
Henrys Fork 10182 -M -M * 9.5 -M *
Hewinta 9500 7.8 5.6 139 9.9 8.9 111
Hickerson Park 9122 6.3 4.4 143 7.1 6.4 111
Hole-in-Rock 9168 5.8 4.4 132 6.8 6.5 105
Indian Creek 9425 17.5 14.6 120 15.0 13.0 115
Kelley R.S. 8180 12.8 9.4 136 13.5 11.2 121
Spirit Lk 10235 12.0 7.0 171 11.9 10.8 110
Steel Creek Park 10158 12.5 9.0 139 12.4 9.8 127
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Basin Index (%) 139 115
UPPER BEAR RIVER
Bear River RS 8777 8.1 6.2 131 9.8 7.5 131
Bug Lake 7987 16.9 11.5 147 13.9 11.9 117
Burts Miller Ranch 8000 6.6 4.1 161 9.6 5.2 185
Chalk Creek #1 9171 18.6 13.0 143 18.9 15.2 124
Giveout 6930 8.2 6.1 134 9.6 8.4 114
Hayden Fork 9130 12.3 8.8 140 16.5 12.8 129
Kelley R.S. 8180 12.8 9.4 136 13.5 11.2 121
Lily Lake 9133 11.0 7.6 145 11.0 10.0 110
Monte Cristo 8932 23.2 15.8 147 21.9 16.8 130
Salt River Summit 7640 11.4 8.1 141 11.3 10.0 113
Spring Creek Divide 9000 16.1 15.6 103 16.0 15.2 105
Trial Lake 9992 21.8 12.8 170 21.5 14.2 151
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Basin Index (%) 140 125
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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.
