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 SUNDAY: JANUARY 29 , 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 10.5 11.2 94 11.8 13.6 87
Blind Bull Sum 8650 14.1 14.3 99 9.9 11.6 85
Cottonwood Creek 7670 14.7 12.5 118 15.8 14.8 107
East Rim Divide 7930 7.4 6.8 109 7.1 7.2 99
Grand Targhee 9260 28.8 26.4 109 17.6 20.0 88
Granite Creek 6770 10.0 10.2 98 9.1 12.4 73
Grassy Lake 7265 18.5 19.1 97 22.1 23.0 96
Gros Ventre Summit 8750 7.6 7.8 97 7.1 7.8 91
Gunsight Pass 9820 8.3 8.1 102 8.0 8.6 93
Lewis Lake Divide 7850 21.1 18.9 112 23.1 21.6 107
Loomis Park 8240 9.4 9.2 102 9.7 10.4 93
Phillips Bench 8200 17.2 15.8 109 17.9 16.8 107
Salt River Summit 7640 11.1 7.4 150 11.0 9.4 117
Snake River Station 6920 11.6 10.8 107 13.8 14.9 93
Somsen Ranch 6800 11.4 8.1 141 13.1 10.6 124
Spring Creek Divide 9000 15.4 14.2 108 15.9 14.6 109
Thumb Divide 7980 12.7 9.8 130 12.1 11.5 105
Togwotee Pass 9580 13.9 14.4 97 13.4 14.8 91
Triple Peak 8500 14.5 13.3 109 15.0 15.2 99
Two Ocean Plateau 9240 19.0 18.2 104 15.4 16.3 94
Willow Creek 8080 21.3 16.8 127 21.0 20.1 104
Younts Peak 8350 9.5 8.8 108 8.6 9.2 93
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Basin Index (%) 109 98
MADISON HEADWATERS IN WYOMING
Black Bear 8170 26.1 22.4 117 26.0 22.7 115
Canyon 7870 8.9 -M * 10.8 -M *
Madison Plateau 7750 18.0 13.6 132 18.6 15.2 122
West Yellowstone 6700 10.1 6.8 149 12.8 9.1 141
Whiskey Creek 6800 12.8 9.1 141 15.6 12.2 128
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Basin Index (%) 129 123
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 10.6 14.0 76 9.4 12.5 75
Canyon 7870 8.9 -M * 10.8 -M *
Evening Star 9200 15.5 17.0 91 17.6 18.2 97
Fisher Creek 9100 21.0 20.8 101 21.7 20.4 106
Monument Peak 8850 12.5 13.2 95 14.8 14.1 105
Northeast Entrance 7350 5.9 6.2 95 8.3 8.2 101
Parker Peak 9400 14.4 13.3 108 14.6 12.6 116
Sylvan Lake 8420 12.1 12.2 99 13.6 14.5 94
Thumb Divide 7980 12.7 9.8 130 12.1 11.5 105
Two Ocean Plateau 9240 19.0 18.2 104 15.4 16.3 94
White Mill 8700 14.9 14.8 101 14.4 14.6 99
Wolverine 7650 7.4 7.6 97 7.9 8.3 95
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Basin Index (%) 99 99
WIND RIVER
Burroughs Creek 8750 6.6 -M * 7.4 -M *
Castle Creek 8400 4.3 4.4 98 4.8 5.8 83
Cold Springs 9630 5.4 4.8 112 6.5 5.8 112
Deer Park 9700 14.8 7.9 187 14.8 10.1 147
Hobbs Park 10100 10.1 7.8 129 9.3 7.0 133
Kirwin 9550 5.8 6.6 88 7.4 7.5 99
Little Warm 9370 6.4 6.2 103 7.2 7.7 94
South Pass 9040 11.6 8.0 145 10.8 9.2 117
St. Lawrence Alt 8620 4.8 -M * 6.3 -M *
Togwotee Pass 9580 13.9 14.4 97 13.4 14.8 91
Townsend Creek 8700 7.3 5.0 146 8.2 6.5 126
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Basin Index (%) 122 111
BIGHORN BASIN
Bald Mtn. 9380 11.5 11.0 105 9.3 9.6 97
Bear Trap Meadow 8200 5.3 3.8 139 5.7 5.2 110
Bone Springs Div 9350 7.4 9.7 76 6.9 8.8 78
Grave Springs 8550 6.6 4.7 140 7.1 5.6 127
Kirwin 9550 5.8 6.6 88 7.4 7.5 99
Marquette 8760 -M 4.0 * 4.9 5.6 88
Middle Powder 7760 7.3 6.0 122 6.3 6.0 105
Owl Creek 8975 4.8 3.2 150 5.2 3.8 137
Powder River Pass 9480 6.4 6.6 97 7.9 8.0 99
Shell Creek 9580 7.7 9.0 86 8.3 8.5 98
Timber Creek 7950 3.6 2.8 129 3.7 4.7 79
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Basin Index (%) 105 99
SHOSHONE RIVER
Blackwater 9780 -M 14.2 * -M 13.8 *
Evening Star 9200 15.5 17.0 91 17.6 18.2 97
Marquette 8760 -M 4.0 * 4.9 5.6 88
Sylvan Lake 8420 12.1 12.2 99 13.6 14.5 94
Sylvan Road 7120 6.5 7.8 83 9.5 11.4 83
Younts Peak 8350 9.5 8.8 108 8.6 9.2 93
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Basin Index (%) 95 92
POWDER RIVER
Bear Trap Meadow 8200 5.3 3.8 139 5.7 5.2 110
Cloud Peak Reservoir 9860 8.7 8.3 105 8.6 8.0 108
Grave Springs 8550 6.6 4.7 140 7.1 5.6 127
Hansen Sawmill 8360 4.6 4.2 110 4.9 5.2 94
Middle Powder 7760 7.3 6.0 122 6.3 6.0 105
Powder River Pass 9480 6.4 6.6 97 7.9 8.0 99
Soldier Park 8720 2.6 3.6 72 4.0 5.6 71
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Basin Index (%) 112 102
TONGUE RIVER
Big Goose 7990 5.9 4.7 126 6.7 5.8 116
Bone Springs Div 9350 7.4 9.7 76 6.9 8.8 78
Burgess Junction 7880 7.8 6.4 122 9.1 7.4 123
Dome Lake 8880 5.3 6.6 80 7.3 7.4 99
Little Goose 8870 6.5 5.6 116 7.5 6.8 110
Sucker Creek 8880 8.5 7.2 118 10.6 8.2 129
Tie Creek 6870 5.7 3.3 173 8.5 6.4 133
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Basin Index (%) 108 111
BELLE FOURCHE
Blind Park 6890 5.3 4.6 115 6.5 6.4 102
Cole Canyon 5910 4.3 3.2 134 4.9 5.3 92
North Rapid Creek 6130 4.4 4.4 100 5.3 5.0 106
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Basin Index (%) 115 100
CHEYENNE RIVER BASIN
Blind Park 6890 5.3 4.6 115 6.5 6.4 102
North Rapid Creek 6130 4.4 4.4 100 5.3 5.0 106
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Basin Index (%) 108 104
UPPER N. PLATTE
Arapaho Ridge 10976 16.2 13.7 118 16.0 13.6 118
Blackhall Mtn 9839 22.6 17.3 131 22.8 18.3 125
Cinnabar Park 9707 -M 12.8 * 15.0 15.2 99
Columbine 9167 18.3 13.6 135 17.5 14.7 119
Divide Peak 8730 16.5 11.6 142 18.2 13.5 135
Joe Wright 10158 15.5 11.4 136 17.9 15.0 119
Laprele Creek 8390 7.6 5.2 146 7.8 6.8 115
Med Bow 10512 24.0 -M * 21.6 -M *
Never Summer 10323 16.2 11.0 147 11.5 10.3 112
North French Creek 10153 19.1 16.4 116 18.8 15.8 119
Old Battle 9860 24.2 18.4 132 25.0 20.7 121
Rawah 9069 10.0 6.8 147 11.2 9.6 117
Sage Creek Basin 7850 14.4 8.7 166 14.0 8.5 165
Sand Lake 10098 16.8 16.0 105 16.7 14.9 112
South Brush Creek 8495 10.2 7.0 146 9.6 8.4 114
Tower 10620 34.6 25.2 137 30.6 25.0 122
Webber Springs 9260 17.0 12.6 135 18.7 15.4 121
Whiskey Park 9020 25.4 15.8 161 23.6 17.7 133
Willow Creek Pass 9523 10.8 7.6 142 11.3 8.3 136
Zirkel 9338 18.7 16.7 112 21.0 19.0 111
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Basin Index (%) 134 121
SWEETWATER
Deer Park 9700 14.8 7.9 187 14.8 10.1 147
Larsen Creek 9000 6.7 4.9 137 9.0 7.8 115
South Pass 9040 11.6 8.0 145 10.8 9.2 117
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Basin Index (%) 159 128
LOWER N. PLATTE
Casper Mtn. 7920 9.0 7.2 125 8.9 8.2 109
Laprele Creek 8390 7.6 5.2 146 7.8 6.8 115
Reno Hill 8430 9.5 8.0 119 10.9 8.4 130
Windy Peak 7915 -M 4.2 * -M 6.2 *
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Basin Index (%) 128 118
LARAMIE RIVER
Brooklyn Lake 10250 14.9 12.4 120 15.6 12.8 122
Cinnabar Park 9707 -M 12.8 * 15.0 15.2 99
Crow Creek 8335 3.6 4.9 73 5.5 6.5 85
Deadman Hill 10239 11.2 10.5 107 10.3 10.4 99
Rawah 9069 10.0 6.8 147 11.2 9.6 117
Roach 9740 11.9 9.6 124 13.3 11.4 117
Windy Peak 7915 -M 4.2 * -M 6.2 *
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Basin Index (%) 117 108
S. PLATTE
Crow Creek 8335 3.6 4.9 73 5.5 6.5 85
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Basin Index (%) 73 85
LITTLE SNAKE RIVER
Battle Mountain 7498 12.1 7.0 173 15.7 9.8 160
Divide Peak 8730 16.5 11.6 142 18.2 13.5 135
Elk River 8739 18.1 10.7 169 16.7 11.6 144
Elkhead Divide 8800 20.1 -M * 20.1 -M *
Little Snake River 8928 23.9 15.0 159 26.0 21.2 123
Old Battle 9860 24.2 18.4 132 25.0 20.7 121
Sage Creek Basin 7850 14.4 8.7 166 14.0 8.5 165
Sandstone RS 8152 15.7 7.8 201 17.1 11.2 153
Whiskey Park 9020 25.4 15.8 161 23.6 17.7 133
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Basin Index (%) 158 137
UPPER GREEN RIVER
Big Sandy Opening 9080 9.4 8.0 118 9.2 7.9 116
Blind Bull Sum 8650 14.1 14.3 99 9.9 11.6 85
East Rim Divide 7930 7.4 6.8 109 7.1 7.2 99
Elkhart Park G.S. 9400 7.8 7.4 105 7.0 7.8 90
Gros Ventre Summit 8750 7.6 7.8 97 7.1 7.8 91
Gunsight Pass 9820 8.3 8.1 102 8.0 8.6 93
Indian Creek 9425 17.0 13.5 126 14.5 12.4 117
Kendall R.S. 7740 7.2 7.3 99 7.6 8.6 88
Larsen Creek 9000 6.7 4.9 137 9.0 7.8 115
Loomis Park 8240 9.4 9.2 102 9.7 10.4 93
New Fork Lake 8340 7.0 6.8 103 -M 6.7 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 8.2 8.0 102 9.4 8.6 109
Spring Creek Divide 9000 15.4 14.2 108 15.9 14.6 109
Triple Peak 8500 14.5 13.3 109 15.0 15.2 99
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Basin Index (%) 108 101
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.4 5.0 168 8.7 7.6 114
Buck Pasture 9632 11.8 -M * 13.6 -M *
EF Blacks Fork GS 9360 9.2 6.1 151 7.1 6.6 108
Hams Fork 7840 9.5 7.0 136 8.9 7.0 127
Henrys Fork 10182 -M -M * 9.3 -M *
Hewinta 9500 7.5 5.2 144 9.6 8.5 113
Hickerson Park 9122 6.1 4.0 152 6.9 6.2 111
Hole-in-Rock 9168 5.6 4.1 137 6.6 6.2 106
Indian Creek 9425 17.0 13.5 126 14.5 12.4 117
Kelley R.S. 8180 12.5 8.7 144 13.1 10.8 121
Spirit Lk 10235 11.8 6.5 182 11.6 9.7 120
Steel Creek Park 10158 12.0 8.6 140 11.9 9.4 127
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Basin Index (%) 145 117
UPPER BEAR RIVER
Bear River RS 8777 7.8 5.4 144 9.5 7.2 132
Bug Lake 7987 16.2 9.6 169 13.2 11.2 118
Burts Miller Ranch 8000 6.1 3.7 165 9.5 5.1 186
Chalk Creek #1 9171 18.0 11.8 153 17.7 14.2 125
Giveout 6930 8.1 5.7 142 9.3 7.4 126
Hayden Fork 9130 12.0 8.2 146 16.0 12.2 131
Kelley R.S. 8180 12.5 8.7 144 13.1 10.8 121
Lily Lake 9133 10.6 7.2 147 10.7 9.4 114
Monte Cristo 8932 22.7 14.3 159 21.3 15.6 137
Salt River Summit 7640 11.1 7.4 150 11.0 9.4 117
Spring Creek Divide 9000 15.4 14.2 108 15.9 14.6 109
Trial Lake 9992 20.9 11.9 176 20.8 13.7 152
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Basin Index (%) 149 128
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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.
