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 TUESDAY: JANUARY 24 , 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 13.1 84
Blind Bull Sum 8650 12.5 14.0 89 9.2 11.2 82
Cottonwood Creek 7670 13.0 11.8 110 14.1 14.2 99
East Rim Divide 7930 6.2 6.4 97 6.3 6.9 91
Grand Targhee 9260 25.2 24.4 103 15.6 19.7 79
Granite Creek 6770 9.1 9.4 97 8.3 12.0 69
Grassy Lake 7265 16.7 17.8 94 20.1 21.9 92
Gros Ventre Summit 8750 7.2 7.8 92 7.0 7.4 95
Gunsight Pass 9820 7.4 7.8 95 7.3 8.4 87
Lewis Lake Divide 7850 20.3 17.5 116 22.2 21.0 106
Loomis Park 8240 8.4 8.9 94 8.6 10.0 86
Phillips Bench 8200 15.4 15.3 101 16.2 16.4 99
Salt River Summit 7640 9.7 7.2 135 9.7 9.0 108
Snake River Station 6920 10.8 10.0 108 12.9 14.2 91
Somsen Ranch 6800 9.4 7.6 124 11.2 10.4 108
Spring Creek Divide 9000 13.5 13.6 99 14.5 13.7 106
Thumb Divide 7980 12.2 9.1 134 11.7 11.0 106
Togwotee Pass 9580 12.6 13.2 95 12.3 14.4 85
Triple Peak 8500 13.5 13.0 104 13.7 14.8 93
Two Ocean Plateau 9240 17.9 17.4 103 14.6 15.6 94
Willow Creek 8080 18.9 15.8 120 18.9 19.0 99
Younts Peak 8350 9.0 8.7 103 8.1 8.8 92
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Basin Index (%) 104 93
MADISON HEADWATERS IN WYOMING
Black Bear 8170 24.7 21.9 113 24.8 22.2 112
Canyon 7870 8.4 -M * 10.4 -M *
Madison Plateau 7750 17.2 13.0 132 18.0 15.0 120
West Yellowstone 6700 9.6 6.5 148 12.3 8.6 143
Whiskey Creek 6800 12.1 8.8 138 16.0 11.8 136
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Basin Index (%) 127 123
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 10.0 13.7 73 9.1 12.1 75
Canyon 7870 8.4 -M * 10.4 -M *
Evening Star 9200 14.2 16.4 87 16.5 17.6 94
Fisher Creek 9100 19.9 20.0 100 20.7 19.4 107
Monument Peak 8850 11.6 12.5 93 13.8 13.6 101
Northeast Entrance 7350 5.4 6.0 90 7.7 8.0 96
Parker Peak 9400 13.0 12.9 101 13.5 12.2 111
Sylvan Lake 8420 10.6 11.6 91 13.5 14.0 96
Thumb Divide 7980 12.2 9.1 134 11.7 11.0 106
Two Ocean Plateau 9240 17.9 17.4 103 14.6 15.6 94
White Mill 8700 13.9 14.6 95 13.8 14.0 99
Wolverine 7650 6.3 7.2 88 7.0 7.9 89
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Basin Index (%) 95 98
WIND RIVER
Burroughs Creek 8750 5.9 -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 14.4 9.6 150
Hobbs Park 10100 9.9 7.4 134 9.2 7.0 131
Kirwin 9550 5.5 6.6 83 7.2 7.3 99
Little Warm 9370 6.0 5.8 103 6.8 7.6 89
South Pass 9040 11.2 7.8 144 10.9 9.0 121
St. Lawrence Alt 8620 4.5 -M * 6.3 -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 10.8 81 7.4 9.5 78
Bear Trap Meadow 8200 4.8 3.8 126 5.5 5.0 110
Bone Springs Div 9350 6.0 9.4 64 5.9 8.6 69
Grave Springs 8550 6.0 4.4 136 6.4 5.4 119
Kirwin 9550 5.5 6.6 83 7.2 7.3 99
Marquette 8760 4.0 3.9 103 4.7 5.4 87
Middle Powder 7760 6.7 5.6 120 6.0 5.8 103
Owl Creek 8975 4.5 3.1 145 5.0 3.7 135
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 2.7 111 3.4 4.5 76
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Basin Index (%) 93 91
SHOSHONE RIVER
Blackwater 9780 11.7 13.8 85 11.6 13.4 87
Evening Star 9200 14.2 16.4 87 16.5 17.6 94
Marquette 8760 4.0 3.9 103 4.7 5.4 87
Sylvan Lake 8420 10.6 11.6 91 13.5 14.0 96
Sylvan Road 7120 5.6 7.4 76 8.4 11.0 76
Younts Peak 8350 9.0 8.7 103 8.1 8.8 92
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Basin Index (%) 89 89
POWDER RIVER
Bear Trap Meadow 8200 4.8 3.8 126 5.5 5.0 110
Cloud Peak Reservoir 9860 7.1 8.0 89 7.2 7.6 95
Grave Springs 8550 6.0 4.4 136 6.4 5.4 119
Hansen Sawmill 8360 3.9 4.0 98 4.3 4.9 88
Middle Powder 7760 6.7 5.6 120 6.0 5.8 103
Powder River Pass 9480 5.2 6.3 83 6.7 7.8 86
Soldier Park 8720 2.2 3.4 65 3.7 5.4 69
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Basin Index (%) 101 95
TONGUE RIVER
Big Goose 7990 4.8 4.4 109 5.5 5.8 95
Bone Springs Div 9350 6.0 9.4 64 5.9 8.6 69
Burgess Junction 7880 6.2 6.1 102 7.6 7.2 106
Dome Lake 8880 4.3 6.2 69 6.1 7.2 85
Little Goose 8870 5.2 5.4 96 6.1 6.6 92
Sucker Creek 8880 6.4 7.0 91 8.4 7.9 106
Tie Creek 6870 3.6 3.2 112 6.5 6.4 102
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Basin Index (%) 88 93
BELLE FOURCHE
Blind Park 6890 4.2 4.2 100 5.6 6.2 90
Cole Canyon 5910 3.6 3.1 116 4.9 5.2 94
North Rapid Creek 6130 3.9 4.0 98 4.8 4.8 100
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Basin Index (%) 104 94
CHEYENNE RIVER BASIN
Blind Park 6890 4.2 4.2 100 5.6 6.2 90
North Rapid Creek 6130 3.9 4.0 98 4.8 4.8 100
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Basin Index (%) 99 95
UPPER N. PLATTE
Arapaho Ridge 10976 15.2 12.6 121 15.3 13.2 116
Blackhall Mtn 9839 20.0 16.5 121 20.4 17.4 117
Cinnabar Park 9707 -M 12.5 * 13.1 14.1 93
Columbine 9167 16.4 13.0 126 16.0 14.0 114
Divide Peak 8730 14.4 11.3 127 16.2 13.1 124
Joe Wright 10158 13.9 10.7 130 16.7 14.8 113
Laprele Creek 8390 6.0 5.0 120 6.3 6.6 95
Med Bow 10512 19.7 -M * 18.3 -M *
Never Summer 10323 15.1 10.9 139 10.6 10.0 106
North French Creek 10153 15.6 16.0 98 15.6 15.6 100
Old Battle 9860 22.0 17.2 128 23.2 20.2 115
Rawah 9069 9.2 6.6 139 10.6 9.4 113
Sage Creek Basin 7850 12.6 7.9 159 12.6 7.8 162
Sand Lake 10098 14.4 15.3 94 14.5 14.0 104
South Brush Creek 8495 8.3 6.8 122 7.8 8.2 95
Tower 10620 30.7 23.6 130 29.0 24.0 121
Webber Springs 9260 15.6 12.2 128 17.1 15.2 112
Whiskey Park 9020 22.1 15.0 147 21.0 17.0 124
Willow Creek Pass 9523 10.3 7.1 145 10.7 7.4 145
Zirkel 9338 16.5 16.0 103 18.9 18.0 105
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Basin Index (%) 124 114
SWEETWATER
Deer Park 9700 14.2 7.6 187 14.4 9.6 150
Larsen Creek 9000 6.0 4.8 125 8.4 7.6 111
South Pass 9040 11.2 7.8 144 10.9 9.0 121
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Basin Index (%) 155 129
LOWER N. PLATTE
Casper Mtn. 7920 7.5 7.0 107 7.8 7.8 100
Laprele Creek 8390 6.0 5.0 120 6.3 6.6 95
Reno Hill 8430 8.0 7.5 107 9.4 8.2 115
Windy Peak 7915 5.0 4.0 125 6.1 5.9 103
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Basin Index (%) 113 104
LARAMIE RIVER
Brooklyn Lake 10250 13.0 11.8 110 13.8 12.4 111
Cinnabar Park 9707 -M 12.5 * 13.1 14.1 93
Crow Creek 8335 3.3 4.7 70 5.4 6.4 84
Deadman Hill 10239 10.5 10.0 105 9.7 10.0 97
Rawah 9069 9.2 6.6 139 10.6 9.4 113
Roach 9740 11.0 9.2 120 12.3 11.2 110
Windy Peak 7915 5.0 4.0 125 6.1 5.9 103
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Basin Index (%) 112 102
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 9.5 145
Divide Peak 8730 14.4 11.3 127 16.2 13.1 124
Elk River 8739 16.2 10.0 162 15.2 11.3 135
Elkhead Divide 8800 18.0 -M * -M -M *
Little Snake River 8928 21.1 14.6 145 24.9 20.1 124
Old Battle 9860 22.0 17.2 128 23.2 20.2 115
Sage Creek Basin 7850 12.6 7.9 159 12.6 7.8 162
Sandstone RS 8152 13.6 7.4 184 15.2 11.0 138
Whiskey Park 9020 22.1 15.0 147 21.0 17.0 124
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Basin Index (%) 147 129
UPPER GREEN RIVER
Big Sandy Opening 9080 8.8 7.2 122 8.7 7.6 114
Blind Bull Sum 8650 12.5 14.0 89 9.2 11.2 82
East Rim Divide 7930 6.2 6.4 97 6.3 6.9 91
Elkhart Park G.S. 9400 7.2 7.2 100 6.5 7.6 86
Gros Ventre Summit 8750 7.2 7.8 92 7.0 7.4 95
Gunsight Pass 9820 7.4 7.8 95 7.3 8.4 87
Indian Creek 9425 15.6 12.9 121 13.3 11.9 112
Kendall R.S. 7740 6.6 7.1 93 7.0 8.4 83
Larsen Creek 9000 6.0 4.8 125 8.4 7.6 111
Loomis Park 8240 8.4 8.9 94 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 7.3 7.6 96 8.6 8.2 105
Spring Creek Divide 9000 13.5 13.6 99 14.5 13.7 106
Triple Peak 8500 13.5 13.0 104 13.7 14.8 93
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Basin Index (%) 101 96
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.2 4.8 171 8.4 7.2 117
Buck Pasture 9632 11.1 -M * 12.9 -M *
EF Blacks Fork GS 9360 9.0 5.8 155 6.8 6.2 110
Hams Fork 7840 8.5 6.6 129 8.4 6.7 125
Henrys Fork 10182 -M -M * 8.7 -M *
Hewinta 9500 7.1 5.2 137 9.2 8.0 115
Hickerson Park 9122 5.8 3.6 161 6.7 5.8 116
Hole-in-Rock 9168 5.4 3.8 142 6.5 6.0 108
Indian Creek 9425 15.6 12.9 121 13.3 11.9 112
Kelley R.S. 8180 11.3 7.9 143 11.9 10.0 119
Spirit Lk 10235 11.3 6.3 179 11.0 9.4 117
Steel Creek Park 10158 11.4 8.0 142 11.2 9.0 124
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Basin Index (%) 144 116
UPPER BEAR RIVER
Bear River RS 8777 7.4 5.2 142 9.0 6.8 132
Bug Lake 7987 14.8 9.2 161 12.4 10.6 117
Burts Miller Ranch 8000 5.7 3.3 173 9.2 4.9 188
Chalk Creek #1 9171 17.3 11.5 150 17.5 12.9 136
Giveout 6930 7.0 5.4 130 8.4 7.2 117
Hayden Fork 9130 11.2 7.7 145 15.0 11.6 129
Kelley R.S. 8180 11.3 7.9 143 11.9 10.0 119
Lily Lake 9133 9.8 6.8 144 10.0 9.0 111
Monte Cristo 8932 20.9 13.9 150 19.9 14.6 136
Salt River Summit 7640 9.7 7.2 135 9.7 9.0 108
Spring Creek Divide 9000 13.5 13.6 99 14.5 13.7 106
Trial Lake 9992 19.8 11.2 177 20.0 12.8 156
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Basin Index (%) 144 128
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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.
