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: JANUARY 27 , 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 9.9 10.6 93 11.1 13.4 83
Blind Bull Sum 8650 12.8 14.2 90 9.3 11.4 82
Cottonwood Creek 7670 13.3 12.0 111 14.3 14.6 98
East Rim Divide 7930 6.6 6.6 100 6.4 7.0 91
Grand Targhee 9260 26.1 25.5 102 16.2 20.0 81
Granite Creek 6770 9.1 9.9 92 8.5 12.2 70
Grassy Lake 7265 17.1 18.6 92 20.7 22.6 92
Gros Ventre Summit 8750 7.4 7.8 95 7.1 7.6 93
Gunsight Pass 9820 7.6 7.9 96 7.5 8.4 89
Lewis Lake Divide 7850 20.5 18.2 113 22.4 21.4 105
Loomis Park 8240 8.5 9.2 92 8.7 10.1 86
Phillips Bench 8200 16.0 15.8 101 16.7 16.6 101
Salt River Summit 7640 10.1 7.4 136 10.0 9.2 109
Snake River Station 6920 10.9 10.4 105 13.0 14.6 89
Somsen Ranch 6800 9.6 7.8 123 11.4 10.4 110
Spring Creek Divide 9000 13.7 14.0 98 14.8 14.3 103
Thumb Divide 7980 12.4 9.3 133 11.9 11.2 106
Togwotee Pass 9580 12.8 14.0 91 12.4 14.6 85
Triple Peak 8500 13.7 13.2 104 14.0 15.2 92
Two Ocean Plateau 9240 18.1 17.8 102 14.8 15.9 93
Willow Creek 8080 19.5 16.2 120 19.4 19.3 101
Younts Peak 8350 9.1 8.8 103 8.3 9.2 90
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Basin Index (%) 103 93
MADISON HEADWATERS IN WYOMING
Black Bear 8170 25.3 22.3 113 25.3 22.6 112
Canyon 7870 8.7 -M * 10.7 -M *
Madison Plateau 7750 17.7 13.6 130 18.3 15.2 120
West Yellowstone 6700 9.9 6.7 148 12.6 8.9 142
Whiskey Creek 6800 12.5 9.0 139 16.3 12.0 136
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Basin Index (%) 127 124
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 10.5 13.8 76 9.3 12.3 76
Canyon 7870 8.7 -M * 10.7 -M *
Evening Star 9200 14.4 16.8 86 16.8 17.8 94
Fisher Creek 9100 20.5 20.4 100 21.5 19.9 108
Monument Peak 8850 12.2 13.0 94 14.4 13.9 104
Northeast Entrance 7350 5.7 6.2 92 8.0 8.1 99
Parker Peak 9400 13.6 13.2 103 13.9 12.5 111
Sylvan Lake 8420 11.0 12.0 92 13.7 14.2 96
Thumb Divide 7980 12.4 9.3 133 11.9 11.2 106
Two Ocean Plateau 9240 18.1 17.8 102 14.8 15.9 93
White Mill 8700 14.4 14.8 97 14.2 14.6 97
Wolverine 7650 6.6 7.6 87 7.2 8.2 88
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Basin Index (%) 96 98
WIND RIVER
Burroughs Creek 8750 6.1 -M * 6.7 -M *
Castle Creek 8400 3.8 4.4 86 4.4 5.8 76
Cold Springs 9630 5.2 4.7 111 6.4 5.8 110
Deer Park 9700 14.2 7.6 187 14.4 9.7 148
Hobbs Park 10100 10.0 7.5 133 9.3 7.0 133
Kirwin 9550 5.6 6.6 85 7.2 7.4 97
Little Warm 9370 6.0 6.0 100 6.9 7.6 91
South Pass 9040 11.2 7.8 144 11.0 9.2 120
St. Lawrence Alt 8620 4.6 -M * 6.4 -M *
Togwotee Pass 9580 12.8 14.0 91 12.4 14.6 85
Townsend Creek 8700 7.1 5.0 142 8.0 6.5 123
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Basin Index (%) 119 109
BIGHORN BASIN
Bald Mtn. 9380 10.5 10.8 97 8.6 9.6 90
Bear Trap Meadow 8200 5.2 3.8 137 5.9 5.2 113
Bone Springs Div 9350 7.2 9.6 75 6.7 8.7 77
Grave Springs 8550 6.4 4.6 139 6.8 5.5 124
Kirwin 9550 5.6 6.6 85 7.2 7.4 97
Marquette 8760 4.0 3.9 103 4.8 5.6 86
Middle Powder 7760 7.2 5.6 129 6.3 5.9 107
Owl Creek 8975 4.5 3.2 141 5.1 3.8 134
Powder River Pass 9480 5.9 6.6 89 7.5 7.8 96
Shell Creek 9580 7.0 8.8 80 7.6 8.4 90
Timber Creek 7950 3.0 2.8 107 3.5 4.6 76
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Basin Index (%) 100 97
SHOSHONE RIVER
Blackwater 9780 12.0 14.0 86 11.9 13.6 88
Evening Star 9200 14.4 16.8 86 16.8 17.8 94
Marquette 8760 4.0 3.9 103 4.8 5.6 86
Sylvan Lake 8420 11.0 12.0 92 13.7 14.2 96
Sylvan Road 7120 5.7 7.7 74 8.6 11.2 77
Younts Peak 8350 9.1 8.8 103 8.3 9.2 90
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Basin Index (%) 89 90
POWDER RIVER
Bear Trap Meadow 8200 5.2 3.8 137 5.9 5.2 113
Cloud Peak Reservoir 9860 8.1 8.2 99 8.2 7.9 104
Grave Springs 8550 6.4 4.6 139 6.8 5.5 124
Hansen Sawmill 8360 4.2 4.0 105 4.5 4.9 92
Middle Powder 7760 7.2 5.6 129 6.3 5.9 107
Powder River Pass 9480 5.9 6.6 89 7.5 7.8 96
Soldier Park 8720 2.8 3.6 78 4.2 5.5 76
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Basin Index (%) 109 102
TONGUE RIVER
Big Goose 7990 5.6 4.5 124 6.1 5.8 105
Bone Springs Div 9350 7.2 9.6 75 6.7 8.7 77
Burgess Junction 7880 7.5 6.3 119 8.9 7.4 120
Dome Lake 8880 5.0 6.4 78 6.8 7.2 94
Little Goose 8870 6.0 5.4 111 7.0 6.8 103
Sucker Creek 8880 8.0 7.2 111 10.2 8.2 124
Tie Creek 6870 -M 3.2 * 7.9 6.4 123
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Basin Index (%) 100 106
BELLE FOURCHE
Blind Park 6890 5.0 4.4 114 6.5 6.3 103
Cole Canyon 5910 4.3 3.3 130 5.5 5.2 106
North Rapid Creek 6130 4.5 4.3 105 5.2 5.0 104
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Basin Index (%) 115 104
CHEYENNE RIVER BASIN
Blind Park 6890 5.0 4.4 114 6.5 6.3 103
North Rapid Creek 6130 4.5 4.3 105 5.2 5.0 104
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Basin Index (%) 109 104
UPPER N. PLATTE
Arapaho Ridge 10976 15.4 13.4 115 15.4 13.4 115
Blackhall Mtn 9839 21.0 17.1 123 21.3 18.1 118
Cinnabar Park 9707 -M 12.8 * 13.4 14.8 91
Columbine 9167 16.8 13.4 125 16.3 14.7 111
Divide Peak 8730 15.0 11.5 130 16.8 13.4 125
Joe Wright 10158 14.8 11.3 131 17.2 15.0 115
Laprele Creek 8390 6.6 5.2 127 7.0 6.6 106
Med Bow 10512 20.8 -M * 18.9 -M *
Never Summer 10323 15.6 11.0 142 11.1 10.1 110
North French Creek 10153 16.8 16.2 104 16.7 15.7 106
Old Battle 9860 22.6 18.2 124 23.5 20.4 115
Rawah 9069 9.7 6.8 143 11.0 9.6 115
Sage Creek Basin 7850 13.0 8.6 151 12.9 8.5 152
Sand Lake 10098 15.2 15.6 97 15.3 14.8 103
South Brush Creek 8495 9.7 7.0 139 9.0 8.2 110
Tower 10620 31.7 25.0 127 29.2 24.6 119
Webber Springs 9260 15.8 12.6 125 17.5 15.4 114
Whiskey Park 9020 23.0 15.6 147 21.7 17.6 123
Willow Creek Pass 9523 10.6 7.5 141 11.0 8.2 134
Zirkel 9338 17.0 16.5 103 19.2 18.8 102
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Basin Index (%) 125 114
SWEETWATER
Deer Park 9700 14.2 7.6 187 14.4 9.7 148
Larsen Creek 9000 6.0 4.8 125 8.4 7.7 109
South Pass 9040 11.2 7.8 144 11.0 9.2 120
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Basin Index (%) 155 127
LOWER N. PLATTE
Casper Mtn. 7920 7.8 7.2 108 8.0 8.0 100
Laprele Creek 8390 6.6 5.2 127 7.0 6.6 106
Reno Hill 8430 8.6 7.8 110 10.0 8.2 122
Windy Peak 7915 5.5 4.2 131 6.5 6.0 108
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Basin Index (%) 117 109
LARAMIE RIVER
Brooklyn Lake 10250 13.4 12.1 111 14.3 12.8 112
Cinnabar Park 9707 -M 12.8 * 13.4 14.8 91
Crow Creek 8335 3.7 4.9 76 5.6 6.5 86
Deadman Hill 10239 10.8 10.4 104 10.0 10.3 97
Rawah 9069 9.7 6.8 143 11.0 9.6 115
Roach 9740 11.2 9.4 119 12.4 11.4 109
Windy Peak 7915 5.5 4.2 131 6.5 6.0 108
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Basin Index (%) 114 103
S. PLATTE
Crow Creek 8335 3.7 4.9 76 5.6 6.5 86
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Basin Index (%) 76 86
LITTLE SNAKE RIVER
Battle Mountain 7498 10.8 6.8 159 14.4 9.6 150
Divide Peak 8730 15.0 11.5 130 16.8 13.4 125
Elk River 8739 16.7 10.4 161 15.1 11.6 130
Elkhead Divide 8800 18.7 -M * 18.4 -M *
Little Snake River 8928 21.9 15.0 146 24.9 21.1 118
Old Battle 9860 22.6 18.2 124 23.5 20.4 115
Sage Creek Basin 7850 13.0 8.6 151 12.9 8.5 152
Sandstone RS 8152 14.2 7.8 182 15.9 11.2 142
Whiskey Park 9020 23.0 15.6 147 21.7 17.6 123
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Basin Index (%) 146 128
UPPER GREEN RIVER
Big Sandy Opening 9080 8.8 7.8 113 8.6 7.8 110
Blind Bull Sum 8650 12.8 14.2 90 9.3 11.4 82
East Rim Divide 7930 6.6 6.6 100 6.4 7.0 91
Elkhart Park G.S. 9400 7.3 7.4 99 6.5 7.6 86
Gros Ventre Summit 8750 7.4 7.8 95 7.1 7.6 93
Gunsight Pass 9820 7.6 7.9 96 7.5 8.4 89
Indian Creek 9425 15.9 13.3 120 13.5 12.4 109
Kendall R.S. 7740 6.7 7.3 92 7.0 8.5 82
Larsen Creek 9000 6.0 4.8 125 8.4 7.7 109
Loomis Park 8240 8.5 9.2 92 8.7 10.1 86
New Fork Lake 8340 6.4 6.6 97 -M 6.7 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 7.4 7.8 95 8.7 8.5 102
Spring Creek Divide 9000 13.7 14.0 98 14.8 14.3 103
Triple Peak 8500 13.7 13.2 104 14.0 15.2 92
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Basin Index (%) 101 95
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.4 5.0 168 8.5 7.4 115
Buck Pasture 9632 11.4 -M * 13.1 -M *
EF Blacks Fork GS 9360 9.2 6.0 153 7.0 6.5 108
Hams Fork 7840 8.7 6.9 126 8.5 7.0 121
Henrys Fork 10182 -M -M * 8.8 -M *
Hewinta 9500 7.3 5.2 140 9.4 8.2 115
Hickerson Park 9122 6.1 3.8 161 6.9 6.0 115
Hole-in-Rock 9168 5.6 3.9 144 6.7 6.1 110
Indian Creek 9425 15.9 13.3 120 13.5 12.4 109
Kelley R.S. 8180 11.5 8.4 137 12.2 10.5 116
Spirit Lk 10235 12.0 6.5 185 11.7 9.6 122
Steel Creek Park 10158 11.7 8.4 139 11.6 9.2 126
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Basin Index (%) 143 116
UPPER BEAR RIVER
Bear River RS 8777 7.6 5.5 138 9.4 7.2 131
Bug Lake 7987 15.0 9.6 156 12.6 10.8 117
Burts Miller Ranch 8000 6.0 3.4 176 9.4 5.0 188
Chalk Creek #1 9171 17.6 11.7 150 17.8 13.7 130
Giveout 6930 7.4 5.5 135 8.7 7.4 118
Hayden Fork 9130 11.4 8.0 142 15.2 11.9 128
Kelley R.S. 8180 11.5 8.4 137 12.2 10.5 116
Lily Lake 9133 10.2 7.0 146 10.4 9.4 111
Monte Cristo 8932 21.2 14.2 149 20.1 15.4 131
Salt River Summit 7640 10.1 7.4 136 10.0 9.2 109
Spring Creek Divide 9000 13.7 14.0 98 14.8 14.3 103
Trial Lake 9992 20.2 11.6 174 20.4 13.4 152
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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.