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 SATURDAY: FEBRUARY 11 , 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 12.8 85 12.4 14.8 84
Blind Bull Sum 8650 14.8 16.1 92 10.4 13.0 80
Cottonwood Creek 7670 15.7 14.6 108 16.7 16.9 99
East Rim Divide 7930 7.7 7.2 107 7.3 7.8 94
Grand Targhee 9260 29.9 30.1 99 18.6 22.2 84
Granite Creek 6770 10.5 11.8 89 9.3 13.6 68
Grassy Lake 7265 19.8 21.8 91 23.5 24.7 95
Gros Ventre Summit 8750 7.9 8.4 94 7.6 8.2 93
Gunsight Pass 9820 8.7 8.8 99 8.5 9.7 88
Lewis Lake Divide 7850 21.7 20.2 107 24.2 23.0 105
Loomis Park 8240 9.9 10.6 93 10.0 11.2 89
Phillips Bench 8200 18.2 17.0 107 18.9 18.5 102
Salt River Summit 7640 11.7 8.6 136 11.5 10.8 106
Snake River Station 6920 12.3 12.4 99 14.4 15.8 91
Somsen Ranch 6800 11.8 9.0 131 13.6 11.8 115
Spring Creek Divide 9000 16.5 16.1 102 16.1 16.0 101
Thumb Divide 7980 12.9 10.6 122 12.5 12.1 103
Togwotee Pass 9580 14.7 15.2 97 14.2 16.7 85
Triple Peak 8500 15.2 15.4 99 15.6 16.6 94
Two Ocean Plateau 9240 19.6 20.6 95 16.2 18.0 90
Willow Creek 8080 23.1 19.0 122 22.5 22.4 100
Younts Peak 8350 10.6 9.8 108 9.2 10.2 90
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Basin Index (%) 103 94
MADISON HEADWATERS IN WYOMING
Black Bear 8170 27.2 24.4 111 27.1 24.2 112
Canyon 7870 9.5 -M * 11.5 -M *
Madison Plateau 7750 18.4 14.4 128 19.3 15.8 122
West Yellowstone 6700 10.4 7.6 137 13.1 9.8 134
Whiskey Creek 6800 13.1 9.9 132 17.1 12.8 134
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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 9.5 -M * 11.5 -M *
Evening Star 9200 16.6 18.6 89 19.1 20.2 95
Fisher Creek 9100 22.0 23.0 96 23.1 22.4 103
Monument Peak 8850 13.9 14.2 98 16.1 15.2 106
Northeast Entrance 7350 6.2 7.0 89 8.6 9.2 93
Parker Peak 9400 15.3 14.7 104 15.7 14.0 112
Sylvan Lake 8420 12.6 13.4 94 15.6 16.3 96
Thumb Divide 7980 12.9 10.6 122 12.5 12.1 103
Two Ocean Plateau 9240 19.6 20.6 95 16.2 18.0 90
White Mill 8700 15.6 16.8 93 15.2 15.8 96
Wolverine 7650 7.9 8.8 90 8.6 8.8 98
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Basin Index (%) 94 97
WIND RIVER
Burroughs Creek 8750 7.1 -M * 7.5 -M *
Castle Creek 8400 4.4 5.0 88 5.0 6.3 79
Cold Springs 9630 5.6 5.4 104 6.9 6.4 108
Deer Park 9700 15.2 9.0 169 15.3 10.8 142
Hobbs Park 10100 10.3 8.8 117 9.6 7.8 123
Kirwin 9550 6.1 7.2 85 7.8 8.2 95
Little Warm 9370 6.8 6.8 100 7.7 8.0 96
South Pass 9040 11.8 8.8 134 11.8 9.8 120
St. Lawrence Alt 8620 4.8 -M * 6.6 -M *
Togwotee Pass 9580 14.7 15.2 97 14.2 16.7 85
Townsend Creek 8700 7.4 5.8 128 8.4 7.2 117
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Basin Index (%) 114 107
BIGHORN BASIN
Bald Mtn. 9380 12.9 12.6 102 10.7 10.8 99
Bear Trap Meadow 8200 6.1 4.3 142 6.6 5.4 122
Bone Springs Div 9350 8.7 10.8 81 7.7 9.9 78
Grave Springs 8550 7.5 5.2 144 7.8 6.2 126
Kirwin 9550 6.1 7.2 85 7.8 8.2 95
Marquette 8760 4.8 4.6 104 5.2 6.2 84
Middle Powder 7760 8.2 6.2 132 7.1 6.2 115
Owl Creek 8975 5.1 3.8 134 5.6 4.1 137
Powder River Pass 9480 7.0 7.4 95 8.8 8.6 102
Shell Creek 9580 8.4 9.9 85 8.9 9.2 97
Timber Creek 7950 3.7 3.1 119 4.1 5.1 80
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Basin Index (%) 105 101
SHOSHONE RIVER
Blackwater 9780 13.1 15.8 83 13.1 15.2 86
Evening Star 9200 16.6 18.6 89 19.1 20.2 95
Marquette 8760 4.8 4.6 104 5.2 6.2 84
Sylvan Lake 8420 12.6 13.4 94 15.6 16.3 96
Sylvan Road 7120 7.2 8.6 84 10.0 12.4 81
Younts Peak 8350 10.6 9.8 108 9.2 10.2 90
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Basin Index (%) 92 90
POWDER RIVER
Bear Trap Meadow 8200 6.1 4.3 142 6.6 5.4 122
Cloud Peak Reservoir 9860 9.3 9.4 99 9.2 8.8 105
Grave Springs 8550 7.5 5.2 144 7.8 6.2 126
Hansen Sawmill 8360 5.1 4.6 111 5.3 5.6 95
Middle Powder 7760 8.2 6.2 132 7.1 6.2 115
Powder River Pass 9480 7.0 7.4 95 8.8 8.6 102
Soldier Park 8720 3.6 4.4 82 4.9 6.2 79
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Basin Index (%) 113 106
TONGUE RIVER
Big Goose 7990 6.5 5.3 123 7.1 6.8 104
Bone Springs Div 9350 8.7 10.8 81 7.7 9.9 78
Burgess Junction 7880 8.7 7.0 124 10.1 8.0 126
Dome Lake 8880 6.0 7.4 81 7.9 8.2 96
Little Goose 8870 7.2 6.6 109 8.0 7.8 103
Sucker Creek 8880 9.4 8.0 118 11.6 9.0 129
Tie Creek 6870 6.6 3.6 183 9.4 7.4 127
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Basin Index (%) 109 108
BELLE FOURCHE
Blind Park 6890 5.8 5.4 107 7.3 7.0 104
Cole Canyon 5910 5.4 3.8 142 6.6 5.6 118
North Rapid Creek 6130 5.4 5.2 104 5.9 5.8 102
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Basin Index (%) 115 108
CHEYENNE RIVER BASIN
Blind Park 6890 5.8 5.4 107 7.3 7.0 104
North Rapid Creek 6130 5.4 5.2 104 5.9 5.8 102
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Basin Index (%) 106 103
UPPER N. PLATTE
Arapaho Ridge 10976 17.4 15.4 113 17.2 15.4 112
Blackhall Mtn 9839 25.5 19.7 129 25.4 20.0 127
Cinnabar Park 9707 -M 14.0 * 16.0 16.5 97
Columbine 9167 20.2 15.6 129 18.9 16.4 115
Divide Peak 8730 18.0 13.3 135 19.5 14.7 133
Joe Wright 10158 17.4 13.0 134 19.5 17.4 112
Laprele Creek 8390 8.3 5.8 143 8.6 7.4 116
Med Bow 10512 26.2 -M * 23.9 -M *
Never Summer 10323 18.1 13.2 137 13.0 11.4 114
North French Creek 10153 20.8 18.4 113 20.7 17.6 118
Old Battle 9860 26.2 21.0 125 26.7 23.4 114
Rawah 9069 11.2 7.8 144 12.4 11.0 113
Sage Creek Basin 7850 15.3 9.5 161 14.7 9.4 156
Sand Lake 10098 18.8 17.5 107 18.7 16.2 115
South Brush Creek 8495 11.5 7.8 147 10.5 9.2 114
Tower 10620 37.5 28.6 131 32.8 27.2 121
Webber Springs 9260 18.4 14.3 129 20.3 17.3 117
Whiskey Park 9020 27.6 17.8 155 25.5 18.8 136
Willow Creek Pass 9523 12.0 8.9 135 12.2 9.2 133
Zirkel 9338 20.8 19.8 105 23.0 21.8 106
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Basin Index (%) 129 118
SWEETWATER
Deer Park 9700 15.2 9.0 169 15.3 10.8 142
Larsen Creek 9000 7.0 7.2 97 9.2 9.0 102
South Pass 9040 11.8 8.8 134 11.8 9.8 120
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Basin Index (%) 136 123
LOWER N. PLATTE
Casper Mtn. 7920 9.7 8.1 120 9.7 9.0 108
Laprele Creek 8390 8.3 5.8 143 8.6 7.4 116
Reno Hill 8430 10.9 8.6 127 12.2 9.2 133
Windy Peak 7915 7.1 4.9 145 7.9 6.6 120
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Basin Index (%) 131 119
LARAMIE RIVER
Brooklyn Lake 10250 16.1 14.4 112 16.9 14.3 118
Cinnabar Park 9707 -M 14.0 * 16.0 16.5 97
Crow Creek 8335 4.3 5.5 78 6.6 6.9 96
Deadman Hill 10239 13.0 11.4 114 12.2 11.8 103
Rawah 9069 11.2 7.8 144 12.4 11.0 113
Roach 9740 13.1 10.6 124 14.6 12.6 116
Windy Peak 7915 7.1 4.9 145 7.9 6.6 120
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Basin Index (%) 119 109
S. PLATTE
Crow Creek 8335 4.3 5.5 78 6.6 6.9 96
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Basin Index (%) 78 96
LITTLE SNAKE RIVER
Battle Mountain 7498 13.0 8.0 162 16.8 10.6 158
Divide Peak 8730 18.0 13.3 135 19.5 14.7 133
Elk River 8739 19.5 12.2 160 18.3 13.0 141
Elkhead Divide 8800 21.7 -M * 21.7 -M *
Little Snake River 8928 25.9 17.2 151 29.7 23.5 126
Old Battle 9860 26.2 21.0 125 26.7 23.4 114
Sage Creek Basin 7850 15.3 9.5 161 14.7 9.4 156
Sandstone RS 8152 16.8 9.1 185 18.2 12.1 150
Whiskey Park 9020 27.6 17.8 155 25.5 18.8 136
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Basin Index (%) 150 135
UPPER GREEN RIVER
Big Sandy Opening 9080 9.7 8.9 109 9.5 8.4 113
Blind Bull Sum 8650 14.8 16.1 92 10.4 13.0 80
East Rim Divide 7930 7.7 7.2 107 7.3 7.8 94
Elkhart Park G.S. 9400 8.3 8.4 99 7.4 8.8 84
Gros Ventre Summit 8750 7.9 8.4 94 7.6 8.2 93
Gunsight Pass 9820 8.7 8.8 99 8.5 9.7 88
Indian Creek 9425 18.0 15.6 115 15.3 13.9 110
Kendall R.S. 7740 7.7 8.1 95 8.0 9.1 88
Larsen Creek 9000 7.0 7.2 97 9.2 9.0 102
Loomis Park 8240 9.9 10.6 93 10.0 11.2 89
New Fork Lake 8340 7.3 7.4 99 -M 7.2 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 8.7 8.8 99 9.9 9.4 105
Spring Creek Divide 9000 16.5 16.1 102 16.1 16.0 101
Triple Peak 8500 15.2 15.4 99 15.6 16.6 94
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Basin Index (%) 100 96
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.8 5.5 160 9.2 8.6 107
Buck Pasture 9632 12.4 -M * 14.3 -M *
EF Blacks Fork GS 9360 9.8 7.2 136 7.5 7.0 107
Hams Fork 7840 10.0 7.8 128 9.4 7.7 122
Henrys Fork 10182 -M -M * 9.5 -M *
Hewinta 9500 8.0 6.0 133 10.3 9.2 112
Hickerson Park 9122 6.2 4.6 135 7.2 6.8 106
Hole-in-Rock 9168 5.7 4.6 124 7.0 6.7 104
Indian Creek 9425 18.0 15.6 115 15.3 13.9 110
Kelley R.S. 8180 13.1 10.0 131 13.8 11.6 119
Spirit Lk 10235 12.3 7.2 171 12.2 10.8 113
Steel Creek Park 10158 12.9 9.6 134 12.7 10.7 119
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Basin Index (%) 134 112
UPPER BEAR RIVER
Bear River RS 8777 8.4 6.4 131 10.0 8.0 125
Bug Lake 7987 17.2 12.8 134 14.3 12.8 112
Burts Miller Ranch 8000 6.1 4.5 136 9.7 5.2 187
Chalk Creek #1 9171 18.9 14.4 131 19.3 15.4 125
Giveout 6930 8.2 6.3 130 9.6 8.8 109
Hayden Fork 9130 12.5 9.3 134 16.8 13.7 123
Kelley R.S. 8180 13.1 10.0 131 13.8 11.6 119
Lily Lake 9133 11.5 8.4 137 11.2 10.6 106
Monte Cristo 8932 23.6 17.4 136 22.4 17.6 127
Salt River Summit 7640 11.7 8.6 136 11.5 10.8 106
Spring Creek Divide 9000 16.5 16.1 102 16.1 16.0 101
Trial Lake 9992 22.1 14.5 152 22.0 15.6 141
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Basin Index (%) 132 121
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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.
