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: JANUARY 23 , 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 9.8 10.4 94 11.0 13.0 85
Blind Bull Sum 8650 12.4 13.8 90 9.2 11.2 82
Cottonwood Creek 7670 13.0 11.8 110 14.0 14.2 99
East Rim Divide 7930 6.1 6.4 95 6.2 6.8 91
Grand Targhee 9260 25.2 24.3 104 15.6 19.4 80
Granite Creek 6770 9.1 9.4 97 8.1 12.0 68
Grassy Lake 7265 16.7 17.8 94 20.1 21.6 93
Gros Ventre Summit 8750 7.2 7.8 92 6.9 7.4 93
Gunsight Pass 9820 7.4 7.6 97 7.3 8.4 87
Lewis Lake Divide 7850 20.3 17.4 117 22.2 21.0 106
Loomis Park 8240 8.3 9.0 92 8.6 10.0 86
Phillips Bench 8200 15.4 15.2 101 16.2 16.3 99
Salt River Summit 7640 9.6 7.2 133 9.6 9.0 107
Snake River Station 6920 10.7 9.9 108 12.8 14.0 91
Somsen Ranch 6800 9.4 7.4 127 11.2 10.1 111
Spring Creek Divide 9000 13.4 13.4 100 14.5 13.6 107
Thumb Divide 7980 12.2 9.0 136 11.7 10.8 108
Togwotee Pass 9580 12.6 13.2 95 12.3 14.4 85
Triple Peak 8500 13.5 12.8 105 13.4 14.7 91
Two Ocean Plateau 9240 17.9 17.4 103 14.6 15.6 94
Willow Creek 8080 18.8 15.8 119 18.8 18.9 99
Younts Peak 8350 8.9 8.7 102 8.0 8.8 91
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Basin Index (%) 105 94
MADISON HEADWATERS IN WYOMING
Black Bear 8170 24.7 21.8 113 24.8 22.1 112
Canyon 7870 8.4 -M * 10.4 -M *
Madison Plateau 7750 17.2 13.0 132 18.0 14.8 122
West Yellowstone 6700 9.6 6.4 150 12.3 8.6 143
Whiskey Creek 6800 12.2 8.7 140 15.8 11.7 135
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Basin Index (%) 128 124
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 10.0 13.4 75 9.0 12.0 75
Canyon 7870 8.4 -M * 10.4 -M *
Evening Star 9200 14.2 16.2 88 16.5 17.4 95
Fisher Creek 9100 19.8 19.9 99 20.7 19.0 109
Monument Peak 8850 11.6 12.6 92 13.8 13.5 102
Northeast Entrance 7350 5.4 6.0 90 7.7 7.8 99
Parker Peak 9400 13.0 12.5 104 13.5 12.2 111
Sylvan Lake 8420 10.6 11.4 93 13.5 14.0 96
Thumb Divide 7980 12.2 9.0 136 11.7 10.8 108
Two Ocean Plateau 9240 17.9 17.4 103 14.6 15.6 94
White Mill 8700 14.0 14.3 98 13.8 14.0 99
Wolverine 7650 6.2 7.1 87 7.0 7.9 89
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Basin Index (%) 96 98
WIND RIVER
Burroughs Creek 8750 6.0 -M * 6.7 -M *
Castle Creek 8400 3.7 4.4 84 4.3 5.6 77
Cold Springs 9630 5.2 4.6 113 6.4 5.8 110
Deer Park 9700 14.2 7.6 187 14.3 9.6 149
Hobbs Park 10100 9.9 7.4 134 9.2 7.0 131
Kirwin 9550 5.5 6.6 83 7.1 7.3 97
Little Warm 9370 5.9 5.8 102 6.8 7.6 89
South Pass 9040 11.2 7.8 144 10.9 9.0 121
St. Lawrence Alt 8620 4.6 -M * 6.4 -M *
Togwotee Pass 9580 12.6 13.2 95 12.3 14.4 85
Townsend Creek 8700 7.1 4.8 148 8.0 6.4 125
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Basin Index (%) 121 109
BIGHORN BASIN
Bald Mtn. 9380 8.8 10.5 84 7.4 9.4 79
Bear Trap Meadow 8200 4.8 3.7 130 5.5 5.0 110
Bone Springs Div 9350 6.0 9.4 64 5.9 8.6 69
Grave Springs 8550 5.9 4.4 134 6.4 5.3 121
Kirwin 9550 5.5 6.6 83 7.1 7.3 97
Marquette 8760 4.0 3.8 105 4.7 5.4 87
Middle Powder 7760 6.7 5.4 124 6.0 5.8 103
Owl Creek 8975 4.5 3.1 145 5.1 3.7 138
Powder River Pass 9480 5.2 6.3 83 6.7 7.8 86
Shell Creek 9580 6.2 8.7 71 6.9 8.2 84
Timber Creek 7950 3.0 2.6 115 3.4 4.4 77
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Basin Index (%) 94 92
SHOSHONE RIVER
Blackwater 9780 11.8 13.9 85 11.7 13.4 87
Evening Star 9200 14.2 16.2 88 16.5 17.4 95
Marquette 8760 4.0 3.8 105 4.7 5.4 87
Sylvan Lake 8420 10.6 11.4 93 13.5 14.0 96
Sylvan Road 7120 5.6 7.4 76 8.4 11.0 76
Younts Peak 8350 8.9 8.7 102 8.0 8.8 91
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Basin Index (%) 90 90
POWDER RIVER
Bear Trap Meadow 8200 4.8 3.7 130 5.5 5.0 110
Cloud Peak Reservoir 9860 7.1 7.8 91 7.2 7.6 95
Grave Springs 8550 5.9 4.4 134 6.4 5.3 121
Hansen Sawmill 8360 4.0 4.0 100 4.3 4.8 90
Middle Powder 7760 6.7 5.4 124 6.0 5.8 103
Powder River Pass 9480 5.2 6.3 83 6.7 7.8 86
Soldier Park 8720 2.3 3.4 68 3.8 5.2 73
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Basin Index (%) 103 96
TONGUE RIVER
Big Goose 7990 4.7 4.4 107 5.5 5.8 95
Bone Springs Div 9350 6.0 9.4 64 5.9 8.6 69
Burgess Junction 7880 6.1 6.0 102 7.5 7.0 107
Dome Lake 8880 4.3 6.2 69 6.0 7.0 86
Little Goose 8870 5.1 5.2 98 6.1 6.5 94
Sucker Creek 8880 6.4 6.8 94 8.4 7.8 108
Tie Creek 6870 3.6 3.2 112 6.4 6.2 103
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Basin Index (%) 88 94
BELLE FOURCHE
Blind Park 6890 4.1 4.2 98 5.6 6.0 93
Cole Canyon 5910 3.5 3.1 113 4.8 5.2 92
North Rapid Creek 6130 4.0 4.0 100 4.7 4.8 98
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Basin Index (%) 103 94
CHEYENNE RIVER BASIN
Blind Park 6890 4.1 4.2 98 5.6 6.0 93
North Rapid Creek 6130 4.0 4.0 100 4.7 4.8 98
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Basin Index (%) 99 95
UPPER N. PLATTE
Arapaho Ridge 10976 15.2 12.4 123 15.2 12.8 119
Blackhall Mtn 9839 19.9 16.4 121 20.4 17.2 119
Cinnabar Park 9707 -M 11.7 * 13.0 14.1 92
Columbine 9167 16.3 13.0 125 16.0 13.8 116
Divide Peak 8730 14.3 11.0 130 16.2 12.7 128
Joe Wright 10158 13.8 10.6 130 16.7 14.7 114
Laprele Creek 8390 5.9 5.0 118 6.2 6.6 94
Med Bow 10512 19.7 -M * 18.3 -M *
Never Summer 10323 15.0 10.7 140 10.7 9.8 109
North French Creek 10153 15.6 15.8 99 15.6 15.5 101
Old Battle 9860 21.9 16.8 130 23.2 20.0 116
Rawah 9069 9.3 6.4 145 10.6 9.4 113
Sage Creek Basin 7850 12.4 7.9 157 12.5 7.7 162
Sand Lake 10098 14.4 15.1 95 14.5 13.6 107
South Brush Creek 8495 8.3 6.4 130 7.9 8.2 96
Tower 10620 30.7 23.4 131 29.0 23.5 123
Webber Springs 9260 15.6 12.0 130 17.1 15.2 112
Whiskey Park 9020 22.0 14.9 148 21.1 17.0 124
Willow Creek Pass 9523 10.3 7.0 147 10.8 7.3 148
Zirkel 9338 16.4 15.8 104 18.9 17.3 109
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Basin Index (%) 126 115
SWEETWATER
Deer Park 9700 14.2 7.6 187 14.3 9.6 149
Larsen Creek 9000 5.9 4.8 123 8.4 7.6 111
South Pass 9040 11.2 7.8 144 10.9 9.0 121
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Basin Index (%) 155 128
LOWER N. PLATTE
Casper Mtn. 7920 7.4 6.8 109 7.6 7.8 97
Laprele Creek 8390 5.9 5.0 118 6.2 6.6 94
Reno Hill 8430 8.0 7.3 110 9.4 8.2 115
Windy Peak 7915 5.0 3.9 128 6.1 5.8 105
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Basin Index (%) 114 103
LARAMIE RIVER
Brooklyn Lake 10250 12.9 11.7 110 13.7 12.4 110
Cinnabar Park 9707 -M 11.7 * 13.0 14.1 92
Crow Creek 8335 3.3 4.7 70 5.4 6.4 84
Deadman Hill 10239 10.6 10.0 106 9.8 10.0 98
Rawah 9069 9.3 6.4 145 10.6 9.4 113
Roach 9740 10.9 9.0 121 12.3 11.2 110
Windy Peak 7915 5.0 3.9 128 6.1 5.8 105
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Basin Index (%) 114 102
S. PLATTE
Crow Creek 8335 3.3 4.7 70 5.4 6.4 84
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Basin Index (%) 70 84
LITTLE SNAKE RIVER
Battle Mountain 7498 10.1 6.6 153 13.8 9.4 147
Divide Peak 8730 14.3 11.0 130 16.2 12.7 128
Elk River 8739 16.2 9.9 164 15.3 11.2 137
Elkhead Divide 8800 18.1 -M * 18.6 -M *
Little Snake River 8928 21.1 14.2 149 25.2 19.4 130
Old Battle 9860 21.9 16.8 130 23.2 20.0 116
Sage Creek Basin 7850 12.4 7.9 157 12.5 7.7 162
Sandstone RS 8152 13.7 7.3 188 15.3 10.6 144
Whiskey Park 9020 22.0 14.9 148 21.1 17.0 124
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Basin Index (%) 149 132
UPPER GREEN RIVER
Big Sandy Opening 9080 8.7 7.2 121 8.6 7.6 113
Blind Bull Sum 8650 12.4 13.8 90 9.2 11.2 82
East Rim Divide 7930 6.1 6.4 95 6.2 6.8 91
Elkhart Park G.S. 9400 7.1 7.2 99 6.5 7.6 86
Gros Ventre Summit 8750 7.2 7.8 92 6.9 7.4 93
Gunsight Pass 9820 7.4 7.6 97 7.3 8.4 87
Indian Creek 9425 15.5 12.7 122 13.2 11.9 111
Kendall R.S. 7740 6.5 7.1 92 7.0 8.4 83
Larsen Creek 9000 5.9 4.8 123 8.4 7.6 111
Loomis Park 8240 8.3 9.0 92 8.6 10.0 86
New Fork Lake 8340 6.3 6.4 98 -M 6.7 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 7.2 7.6 95 8.4 8.1 104
Spring Creek Divide 9000 13.4 13.4 100 14.5 13.6 107
Triple Peak 8500 13.5 12.8 105 13.4 14.7 91
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Basin Index (%) 101 96
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.1 4.8 169 8.4 7.0 120
Buck Pasture 9632 11.1 -M * 12.8 -M *
EF Blacks Fork GS 9360 9.0 5.7 158 6.8 6.1 111
Hams Fork 7840 8.4 6.4 131 8.4 6.5 129
Henrys Fork 10182 -M -M * 8.6 -M *
Hewinta 9500 7.0 5.1 137 9.1 8.0 114
Hickerson Park 9122 5.7 3.6 158 6.6 5.8 114
Hole-in-Rock 9168 5.4 3.8 142 6.4 6.0 107
Indian Creek 9425 15.5 12.7 122 13.2 11.9 111
Kelley R.S. 8180 11.2 7.8 144 11.8 10.0 118
Spirit Lk 10235 11.2 6.3 178 11.0 9.2 120
Steel Creek Park 10158 11.4 8.0 142 11.1 9.0 123
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Basin Index (%) 145 117
UPPER BEAR RIVER
Bear River RS 8777 7.3 5.2 140 9.0 6.7 134
Bug Lake 7987 14.7 8.9 165 12.4 10.4 119
Burts Miller Ranch 8000 5.7 3.3 173 9.1 4.9 186
Chalk Creek #1 9171 17.1 11.4 150 17.5 12.9 136
Giveout 6930 7.0 5.3 132 8.4 7.2 117
Hayden Fork 9130 11.2 7.6 147 14.9 11.4 131
Kelley R.S. 8180 11.2 7.8 144 11.8 10.0 118
Lily Lake 9133 9.9 6.8 146 10.0 8.8 114
Monte Cristo 8932 20.9 13.6 154 19.9 14.4 138
Salt River Summit 7640 9.6 7.2 133 9.6 9.0 107
Spring Creek Divide 9000 13.4 13.4 100 14.5 13.6 107
Trial Lake 9992 19.8 11.2 177 19.9 12.6 158
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Basin Index (%) 145 129
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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.
