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 10 , 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 12.6 87 12.4 14.8 84
Blind Bull Sum 8650 14.5 16.0 91 10.3 12.8 80
Cottonwood Creek 7670 15.7 14.5 108 16.8 16.8 100
East Rim Divide 7930 7.7 7.2 107 7.3 7.8 94
Grand Targhee 9260 29.8 29.8 100 18.5 22.2 83
Granite Creek 6770 10.5 11.8 89 9.3 13.6 68
Grassy Lake 7265 19.7 21.8 90 23.5 24.7 95
Gros Ventre Summit 8750 7.7 8.3 93 7.4 8.2 90
Gunsight Pass 9820 8.6 8.8 98 8.4 9.6 88
Lewis Lake Divide 7850 21.6 20.1 107 24.1 23.0 105
Loomis Park 8240 9.8 10.6 92 10.0 11.1 90
Phillips Bench 8200 18.1 17.0 106 18.8 18.4 102
Salt River Summit 7640 11.5 8.5 135 11.3 10.7 106
Snake River Station 6920 12.2 12.3 99 14.5 15.8 92
Somsen Ranch 6800 11.8 9.0 131 13.5 11.8 114
Spring Creek Divide 9000 16.3 16.0 102 15.9 15.8 101
Thumb Divide 7980 12.7 10.4 122 12.4 12.0 103
Togwotee Pass 9580 14.7 15.1 97 14.2 16.6 86
Triple Peak 8500 15.2 15.4 99 15.6 16.6 94
Two Ocean Plateau 9240 19.6 20.6 95 15.9 17.9 89
Willow Creek 8080 22.8 19.0 120 22.3 22.2 100
Younts Peak 8350 10.6 9.6 110 9.2 10.2 90
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Basin Index (%) 102 94
MADISON HEADWATERS IN WYOMING
Black Bear 8170 27.2 24.4 111 27.1 24.1 112
Canyon 7870 9.4 -M * 11.4 -M *
Madison Plateau 7750 18.4 14.4 128 19.2 15.8 122
West Yellowstone 6700 10.3 7.5 137 13.1 9.8 134
Whiskey Creek 6800 13.1 9.9 132 16.7 12.8 130
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Basin Index (%) 123 122
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 11.2 15.6 72 10.2 14.5 70
Canyon 7870 9.4 -M * 11.4 -M *
Evening Star 9200 16.5 18.4 90 18.9 20.0 94
Fisher Creek 9100 22.0 22.6 97 23.0 22.2 104
Monument Peak 8850 13.8 14.2 97 16.0 15.2 105
Northeast Entrance 7350 6.2 6.9 90 8.6 9.0 96
Parker Peak 9400 15.2 14.7 103 15.5 14.0 111
Sylvan Lake 8420 12.5 13.3 94 15.5 16.2 96
Thumb Divide 7980 12.7 10.4 122 12.4 12.0 103
Two Ocean Plateau 9240 19.6 20.6 95 15.9 17.9 89
White Mill 8700 15.6 16.8 93 15.2 15.8 96
Wolverine 7650 7.9 8.6 92 8.6 8.8 98
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Basin Index (%) 95 96
WIND RIVER
Burroughs Creek 8750 7.0 -M * 7.5 -M *
Castle Creek 8400 4.4 5.0 88 4.9 6.2 79
Cold Springs 9630 5.6 5.4 104 6.9 6.3 110
Deer Park 9700 15.1 9.0 168 15.2 10.8 141
Hobbs Park 10100 10.3 8.8 117 9.6 7.8 123
Kirwin 9550 6.1 7.2 85 7.8 8.1 96
Little Warm 9370 6.8 6.8 100 7.7 8.0 96
South Pass 9040 11.8 8.6 137 11.6 9.6 121
St. Lawrence Alt 8620 4.8 -M * 6.4 -M *
Togwotee Pass 9580 14.7 15.1 97 14.2 16.6 86
Townsend Creek 8700 7.4 5.8 128 8.3 7.2 115
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Basin Index (%) 115 107
BIGHORN BASIN
Bald Mtn. 9380 12.8 12.4 103 10.7 10.7 100
Bear Trap Meadow 8200 6.0 4.1 146 6.3 5.4 117
Bone Springs Div 9350 8.6 10.8 80 7.6 9.8 78
Grave Springs 8550 7.4 5.1 145 7.8 6.1 128
Kirwin 9550 6.1 7.2 85 7.8 8.1 96
Marquette 8760 4.8 4.6 104 5.3 6.2 85
Middle Powder 7760 8.1 6.2 131 6.9 6.2 111
Owl Creek 8975 5.0 3.8 132 5.6 4.1 137
Powder River Pass 9480 7.0 7.3 96 8.6 8.6 100
Shell Creek 9580 8.3 9.8 85 8.8 9.1 97
Timber Creek 7950 3.7 3.1 119 4.0 5.1 78
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Basin Index (%) 105 100
SHOSHONE RIVER
Blackwater 9780 13.0 15.8 82 13.0 15.2 86
Evening Star 9200 16.5 18.4 90 18.9 20.0 94
Marquette 8760 4.8 4.6 104 5.3 6.2 85
Sylvan Lake 8420 12.5 13.3 94 15.5 16.2 96
Sylvan Road 7120 7.0 8.6 81 10.0 12.4 81
Younts Peak 8350 10.6 9.6 110 9.2 10.2 90
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Basin Index (%) 92 90
POWDER RIVER
Bear Trap Meadow 8200 6.0 4.1 146 6.3 5.4 117
Cloud Peak Reservoir 9860 9.2 9.3 99 9.3 8.7 107
Grave Springs 8550 7.4 5.1 145 7.8 6.1 128
Hansen Sawmill 8360 4.9 4.5 109 5.2 5.5 95
Middle Powder 7760 8.1 6.2 131 6.9 6.2 111
Powder River Pass 9480 7.0 7.3 96 8.6 8.6 100
Soldier Park 8720 3.2 4.4 73 4.7 6.2 76
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Basin Index (%) 112 104
TONGUE RIVER
Big Goose 7990 6.4 5.2 123 7.1 6.7 106
Bone Springs Div 9350 8.6 10.8 80 7.6 9.8 78
Burgess Junction 7880 8.7 7.0 124 10.2 7.9 129
Dome Lake 8880 5.9 7.3 81 7.8 8.2 95
Little Goose 8870 7.1 6.6 108 8.0 7.8 103
Sucker Creek 8880 9.3 8.0 116 11.4 8.8 130
Tie Creek 6870 6.5 3.6 181 9.3 7.3 127
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Basin Index (%) 108 109
BELLE FOURCHE
Blind Park 6890 5.9 5.3 111 7.1 6.8 104
Cole Canyon 5910 5.3 3.6 147 6.4 5.6 114
North Rapid Creek 6130 5.2 5.0 104 5.8 5.6 104
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Basin Index (%) 118 107
CHEYENNE RIVER BASIN
Blind Park 6890 5.9 5.3 111 7.1 6.8 104
North Rapid Creek 6130 5.2 5.0 104 5.8 5.6 104
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Basin Index (%) 108 104
UPPER N. PLATTE
Arapaho Ridge 10976 17.2 15.3 112 17.1 15.4 111
Blackhall Mtn 9839 25.4 19.7 129 25.3 20.0 126
Cinnabar Park 9707 -M 13.9 * 15.9 16.5 96
Columbine 9167 20.0 15.6 128 18.6 16.4 113
Divide Peak 8730 17.9 13.3 135 19.3 14.7 131
Joe Wright 10158 17.2 13.0 132 19.4 17.2 113
Laprele Creek 8390 8.2 5.8 141 8.5 7.4 115
Med Bow 10512 26.1 -M * 23.8 -M *
Never Summer 10323 18.2 13.1 139 12.9 11.2 115
North French Creek 10153 20.6 18.2 113 20.6 17.6 117
Old Battle 9860 26.1 20.8 125 26.6 23.4 114
Rawah 9069 11.0 7.8 141 12.5 11.0 114
Sage Creek Basin 7850 15.2 9.5 160 14.7 9.4 156
Sand Lake 10098 18.5 17.2 108 18.4 16.1 114
South Brush Creek 8495 11.3 7.8 145 10.4 9.1 114
Tower 10620 37.4 27.6 136 32.6 26.8 122
Webber Springs 9260 18.4 14.0 131 20.2 17.2 117
Whiskey Park 9020 27.4 17.6 156 25.3 18.6 136
Willow Creek Pass 9523 11.9 8.8 135 12.1 9.0 134
Zirkel 9338 20.6 19.6 105 -M 21.5 *
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Basin Index (%) 129 119
SWEETWATER
Deer Park 9700 15.1 9.0 168 15.2 10.8 141
Larsen Creek 9000 6.9 7.0 99 9.1 8.8 103
South Pass 9040 11.8 8.6 137 11.6 9.6 121
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Basin Index (%) 137 123
LOWER N. PLATTE
Casper Mtn. 7920 9.8 8.1 121 9.7 9.0 108
Laprele Creek 8390 8.2 5.8 141 8.5 7.4 115
Reno Hill 8430 10.8 8.5 127 12.1 9.2 132
Windy Peak 7915 -M 4.9 * -M 6.6 *
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Basin Index (%) 129 118
LARAMIE RIVER
Brooklyn Lake 10250 16.0 14.2 113 16.7 14.2 118
Cinnabar Park 9707 -M 13.9 * 15.9 16.5 96
Crow Creek 8335 4.1 5.5 75 6.4 6.9 93
Deadman Hill 10239 12.8 11.4 112 12.0 11.6 103
Rawah 9069 11.0 7.8 141 12.5 11.0 114
Roach 9740 12.9 10.6 122 14.4 12.5 115
Windy Peak 7915 -M 4.9 * -M 6.6 *
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Basin Index (%) 115 107
S. PLATTE
Crow Creek 8335 4.1 5.5 75 6.4 6.9 93
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Basin Index (%) 75 93
LITTLE SNAKE RIVER
Battle Mountain 7498 12.9 8.0 161 16.6 10.6 157
Divide Peak 8730 17.9 13.3 135 19.3 14.7 131
Elk River 8739 19.3 12.0 161 18.1 12.9 140
Elkhead Divide 8800 21.4 -M * -M -M *
Little Snake River 8928 25.8 17.2 150 29.4 23.4 126
Old Battle 9860 26.1 20.8 125 26.6 23.4 114
Sage Creek Basin 7850 15.2 9.5 160 14.7 9.4 156
Sandstone RS 8152 16.7 9.0 186 18.1 12.0 151
Whiskey Park 9020 27.4 17.6 156 25.3 18.6 136
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Basin Index (%) 150 134
UPPER GREEN RIVER
Big Sandy Opening 9080 9.5 8.8 108 9.3 8.4 111
Blind Bull Sum 8650 14.5 16.0 91 10.3 12.8 80
East Rim Divide 7930 7.7 7.2 107 7.3 7.8 94
Elkhart Park G.S. 9400 8.2 8.4 98 7.3 8.8 83
Gros Ventre Summit 8750 7.7 8.3 93 7.4 8.2 90
Gunsight Pass 9820 8.6 8.8 98 8.4 9.6 88
Indian Creek 9425 17.8 15.4 116 15.2 13.9 109
Kendall R.S. 7740 7.6 8.1 94 8.0 9.0 89
Larsen Creek 9000 6.9 7.0 99 9.1 8.8 103
Loomis Park 8240 9.8 10.6 92 10.0 11.1 90
New Fork Lake 8340 7.2 7.3 99 -M 7.2 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 8.7 8.8 99 9.8 9.4 104
Spring Creek Divide 9000 16.3 16.0 102 15.9 15.8 101
Triple Peak 8500 15.2 15.4 99 15.6 16.6 94
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Basin Index (%) 100 95
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.7 5.4 161 9.2 8.6 107
Buck Pasture 9632 12.2 -M * 14.3 -M *
EF Blacks Fork GS 9360 9.6 7.2 133 7.4 7.0 106
Hams Fork 7840 9.9 7.8 127 9.3 7.6 122
Henrys Fork 10182 -M -M * 9.8 -M *
Hewinta 9500 7.8 6.0 130 10.1 9.0 112
Hickerson Park 9122 6.1 4.5 136 7.1 6.8 104
Hole-in-Rock 9168 5.5 4.6 120 6.8 6.7 101
Indian Creek 9425 17.8 15.4 116 15.2 13.9 109
Kelley R.S. 8180 13.0 9.8 133 13.6 11.6 117
Spirit Lk 10235 12.0 7.2 167 12.0 10.8 111
Steel Creek Park 10158 12.8 9.4 136 12.6 10.3 122
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Basin Index (%) 134 112
UPPER BEAR RIVER
Bear River RS 8777 8.3 6.2 134 9.9 8.0 124
Bug Lake 7987 17.3 12.7 136 14.3 12.8 112
Burts Miller Ranch 8000 6.0 4.5 133 9.7 5.2 187
Chalk Creek #1 9171 18.8 14.2 132 19.2 15.4 125
Giveout 6930 8.2 6.3 130 9.6 8.8 109
Hayden Fork 9130 12.5 9.2 136 16.9 13.4 126
Kelley R.S. 8180 13.0 9.8 133 13.6 11.6 117
Lily Lake 9133 11.4 8.2 139 11.2 10.5 107
Monte Cristo 8932 23.5 17.2 137 22.2 17.5 127
Salt River Summit 7640 11.5 8.5 135 11.3 10.7 106
Spring Creek Divide 9000 16.3 16.0 102 15.9 15.8 101
Trial Lake 9992 22.0 14.4 153 22.0 15.6 141
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Basin Index (%) 133 121
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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.
