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 THURSDAY: JANUARY 12 , 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 9.6 9.6 100 10.5 11.8 89
Blind Bull Sum 8650 12.1 12.0 101 8.7 10.2 85
Cottonwood Creek 7670 12.5 9.6 130 13.4 12.4 108
East Rim Divide 7930 6.0 5.2 115 6.1 6.3 97
Grand Targhee 9260 23.8 22.8 104 14.9 17.4 86
Granite Creek 6770 8.7 7.8 112 8.1 10.6 76
Grassy Lake 7265 16.2 15.5 105 19.6 18.2 108
Gros Ventre Summit 8750 7.1 7.1 100 6.6 6.8 97
Gunsight Pass 9820 7.2 6.7 107 7.1 7.5 95
Lewis Lake Divide 7850 19.3 15.4 125 21.6 17.8 121
Loomis Park 8240 8.3 7.4 112 8.4 8.8 95
Phillips Bench 8200 14.8 12.6 117 15.6 13.8 113
Salt River Summit 7640 9.3 5.8 160 9.5 8.1 117
Snake River Station 6920 10.5 8.6 122 12.6 12.4 102
Somsen Ranch 6800 9.2 6.0 153 10.7 9.1 118
Spring Creek Divide 9000 13.5 11.2 121 14.1 12.0 118
Thumb Divide 7980 11.7 7.6 154 11.3 9.4 120
Togwotee Pass 9580 12.1 12.6 96 11.9 13.2 90
Triple Peak 8500 13.4 11.2 120 13.6 12.5 109
Two Ocean Plateau 9240 17.5 16.3 107 14.2 14.8 96
Willow Creek 8080 17.8 13.4 133 17.9 16.7 107
Younts Peak 8350 8.8 7.6 116 8.0 8.0 100
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Basin Index (%) 116 103
MADISON HEADWATERS IN WYOMING
Black Bear 8170 23.4 20.0 117 23.6 20.4 116
Canyon 7870 8.2 -M * 10.0 -M *
Madison Plateau 7750 16.3 11.2 146 17.2 13.6 126
West Yellowstone 6700 9.1 5.6 162 11.7 7.8 150
Whiskey Creek 6800 11.6 7.4 157 15.4 11.0 140
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Basin Index (%) 137 129
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 9.7 11.9 82 8.7 11.3 77
Canyon 7870 8.2 -M * 10.0 -M *
Evening Star 9200 13.9 14.0 99 16.3 16.0 102
Fisher Creek 9100 19.2 17.9 107 20.2 17.8 113
Monument Peak 8850 11.3 10.8 105 13.5 12.2 111
Northeast Entrance 7350 5.2 4.9 106 7.4 7.2 103
Parker Peak 9400 12.6 11.5 110 13.1 11.2 117
Sylvan Lake 8420 10.2 10.4 98 13.0 13.2 98
Thumb Divide 7980 11.7 7.6 154 11.3 9.4 120
Two Ocean Plateau 9240 17.5 16.3 107 14.2 14.8 96
White Mill 8700 13.4 13.0 103 13.4 12.7 106
Wolverine 7650 6.2 6.0 103 7.0 7.1 99
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Basin Index (%) 105 104
WIND RIVER
Burroughs Creek 8750 5.7 -M * 6.5 -M *
Castle Creek 8400 3.5 3.8 92 4.1 5.0 82
Cold Springs 9630 4.8 4.2 114 5.9 5.3 111
Deer Park 9700 14.0 6.8 206 14.1 8.8 160
Hobbs Park 10100 9.3 7.0 133 8.6 6.7 128
Kirwin 9550 5.2 6.0 87 6.8 6.6 103
Little Warm 9370 5.8 5.3 109 6.7 6.8 99
South Pass 9040 10.9 6.8 160 10.2 8.0 128
St. Lawrence Alt 8620 4.1 -M * 5.8 -M *
Togwotee Pass 9580 12.1 12.6 96 11.9 13.2 90
Townsend Creek 8700 6.6 4.4 150 7.5 6.0 125
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Basin Index (%) 127 114
BIGHORN BASIN
Bald Mtn. 9380 8.5 9.8 87 7.2 8.5 85
Bear Trap Meadow 8200 4.6 3.4 135 5.4 4.7 115
Bone Springs Div 9350 5.6 8.6 65 5.7 8.0 71
Grave Springs 8550 5.9 3.9 151 6.3 5.0 126
Kirwin 9550 5.2 6.0 87 6.8 6.6 103
Marquette 8760 3.7 3.8 97 4.5 5.2 87
Middle Powder 7760 6.6 4.9 135 5.9 5.4 109
Owl Creek 8975 4.2 2.8 150 4.9 3.4 144
Powder River Pass 9480 5.0 5.8 86 6.5 7.0 93
Shell Creek 9580 5.9 8.2 72 6.7 7.4 91
Timber Creek 7950 2.8 2.5 112 3.2 4.4 73
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Basin Index (%) 97 96
SHOSHONE RIVER
Blackwater 9780 11.6 12.9 90 11.5 12.4 93
Evening Star 9200 13.9 14.0 99 16.3 16.0 102
Marquette 8760 3.7 3.8 97 4.5 5.2 87
Sylvan Lake 8420 10.2 10.4 98 13.0 13.2 98
Sylvan Road 7120 5.6 6.4 88 8.2 10.2 80
Younts Peak 8350 8.8 7.6 116 8.0 8.0 100
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Basin Index (%) 98 95
POWDER RIVER
Bear Trap Meadow 8200 4.6 3.4 135 5.4 4.7 115
Cloud Peak Reservoir 9860 6.8 7.2 94 6.9 7.0 99
Grave Springs 8550 5.9 3.9 151 6.3 5.0 126
Hansen Sawmill 8360 3.8 3.6 106 4.2 4.6 91
Middle Powder 7760 6.6 4.9 135 5.9 5.4 109
Powder River Pass 9480 5.0 5.8 86 6.5 7.0 93
Soldier Park 8720 2.0 3.0 67 3.5 4.8 73
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Basin Index (%) 109 101
TONGUE RIVER
Big Goose 7990 4.4 4.0 110 5.2 5.4 96
Bone Springs Div 9350 5.6 8.6 65 5.7 8.0 71
Burgess Junction 7880 5.9 5.4 109 7.3 6.4 114
Dome Lake 8880 4.0 5.5 73 5.8 6.6 88
Little Goose 8870 4.8 4.8 100 5.8 6.2 94
Sucker Creek 8880 6.1 6.1 100 8.1 7.0 116
Tie Creek 6870 3.4 2.6 131 6.2 5.7 109
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Basin Index (%) 92 97
BELLE FOURCHE
Blind Park 6890 3.6 3.6 100 5.0 5.4 93
Cole Canyon 5910 3.1 2.8 111 4.2 4.6 91
North Rapid Creek 6130 3.6 3.7 97 4.4 4.2 105
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Basin Index (%) 102 96
CHEYENNE RIVER BASIN
Blind Park 6890 3.6 3.6 100 5.0 5.4 93
North Rapid Creek 6130 3.6 3.7 97 4.4 4.2 105
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Basin Index (%) 99 98
UPPER N. PLATTE
Arapaho Ridge 10976 13.7 11.3 121 13.8 11.6 119
Blackhall Mtn 9839 18.4 13.3 138 19.1 15.7 122
Cinnabar Park 9707 -M 11.5 * 11.8 13.1 90
Columbine 9167 14.7 11.1 132 14.8 11.9 124
Divide Peak 8730 12.7 9.6 132 15.0 11.8 127
Joe Wright 10158 12.6 9.8 129 15.5 12.7 122
Laprele Creek 8390 5.4 4.2 129 5.6 6.0 93
Med Bow 10512 18.7 -M * 17.7 -M *
Never Summer 10323 13.9 9.8 142 9.8 9.4 104
North French Creek 10153 15.1 13.8 109 15.0 14.2 106
Old Battle 9860 20.4 15.2 134 22.0 17.6 125
Rawah 9069 8.7 5.7 153 9.9 8.6 115
Sage Creek Basin 7850 11.4 6.6 173 11.9 7.2 165
Sand Lake 10098 13.4 13.4 100 13.4 12.2 110
South Brush Creek 8495 8.4 5.8 145 7.7 7.2 107
Tower 10620 28.0 19.7 142 27.1 20.5 132
Webber Springs 9260 14.6 10.6 138 15.9 13.4 119
Whiskey Park 9020 20.8 11.7 178 20.0 14.9 134
Willow Creek Pass 9523 9.2 6.5 142 9.9 7.0 141
Zirkel 9338 14.9 14.4 103 17.3 16.6 104
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Basin Index (%) 133 119
SWEETWATER
Deer Park 9700 14.0 6.8 206 14.1 8.8 160
Larsen Creek 9000 5.8 4.0 145 8.2 6.6 124
South Pass 9040 10.9 6.8 160 10.2 8.0 128
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Basin Index (%) 174 139
LOWER N. PLATTE
Casper Mtn. 7920 6.8 6.0 113 6.9 7.2 96
Laprele Creek 8390 5.4 4.2 129 5.6 6.0 93
Reno Hill 8430 7.2 6.6 109 8.6 7.4 116
Windy Peak 7915 4.2 3.5 120 5.2 5.2 100
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Basin Index (%) 116 102
LARAMIE RIVER
Brooklyn Lake 10250 11.9 10.6 112 12.6 10.8 117
Cinnabar Park 9707 -M 11.5 * 11.8 13.1 90
Crow Creek 8335 2.4 4.2 57 4.6 5.9 78
Deadman Hill 10239 9.7 9.0 108 9.0 9.0 100
Rawah 9069 8.7 5.7 153 9.9 8.6 115
Roach 9740 9.8 8.1 121 11.3 9.7 116
Windy Peak 7915 4.2 3.5 120 5.2 5.2 100
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Basin Index (%) 114 103
S. PLATTE
Crow Creek 8335 2.4 4.2 57 4.6 5.9 78
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Basin Index (%) 57 78
LITTLE SNAKE RIVER
Battle Mountain 7498 10.3 5.4 191 13.6 8.0 170
Divide Peak 8730 12.7 9.6 132 15.0 11.8 127
Elk River 8739 15.5 8.0 194 14.4 9.9 145
Elkhead Divide 8800 17.6 -M * 17.9 -M *
Little Snake River 8928 20.2 13.0 155 24.1 18.0 134
Old Battle 9860 20.4 15.2 134 22.0 17.6 125
Sage Creek Basin 7850 11.4 6.6 173 11.9 7.2 165
Sandstone RS 8152 13.5 6.0 225 14.8 9.2 161
Whiskey Park 9020 20.8 11.7 178 20.0 14.9 134
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Basin Index (%) 165 141
UPPER GREEN RIVER
Big Sandy Opening 9080 8.5 6.8 125 8.4 7.0 120
Blind Bull Sum 8650 12.1 12.0 101 8.7 10.2 85
East Rim Divide 7930 6.0 5.2 115 6.1 6.3 97
Elkhart Park G.S. 9400 6.8 6.2 110 6.3 6.8 93
Gros Ventre Summit 8750 7.1 7.1 100 6.6 6.8 97
Gunsight Pass 9820 7.2 6.7 107 7.1 7.5 95
Indian Creek 9425 14.9 10.9 137 12.7 10.1 126
Kendall R.S. 7740 6.4 6.3 102 6.8 7.4 92
Larsen Creek 9000 5.8 4.0 145 8.2 6.6 124
Loomis Park 8240 8.3 7.4 112 8.4 8.8 95
New Fork Lake 8340 6.2 5.5 113 -M 6.0 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 7.2 6.1 118 8.3 7.0 119
Spring Creek Divide 9000 13.5 11.2 121 14.1 12.0 118
Triple Peak 8500 13.4 11.2 120 13.6 12.5 109
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Basin Index (%) 116 106
LOWER GREEN RIVER
Blacks Fork Jct 8869 7.9 3.8 208 8.1 6.4 127
Buck Pasture 9632 10.9 -M * 12.4 -M *
EF Blacks Fork GS 9360 9.2 4.4 209 6.9 5.4 128
Hams Fork 7840 8.2 5.3 155 7.9 5.8 136
Henrys Fork 10182 -M -M * 8.5 -M *
Hewinta 9500 6.7 4.6 146 8.7 7.2 121
Hickerson Park 9122 5.2 3.2 162 6.2 5.2 119
Hole-in-Rock 9168 4.7 3.4 138 5.9 5.6 105
Indian Creek 9425 14.9 10.9 137 12.7 10.1 126
Kelley R.S. 8180 10.8 6.8 159 11.3 9.1 124
Spirit Lk 10235 10.2 5.6 182 10.1 8.4 120
Steel Creek Park 10158 11.1 6.8 163 11.0 8.4 131
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Basin Index (%) 162 124
UPPER BEAR RIVER
Bear River RS 8777 7.4 4.2 176 8.7 6.2 140
Bug Lake 7987 14.0 7.6 184 11.8 9.5 124
Burts Miller Ranch 8000 5.8 3.1 187 8.8 4.3 205
Chalk Creek #1 9171 16.5 10.4 159 16.9 11.4 148
Giveout 6930 6.9 4.2 164 8.1 6.4 127
Hayden Fork 9130 10.6 6.4 166 14.1 10.0 141
Kelley R.S. 8180 10.8 6.8 159 11.3 9.1 124
Lily Lake 9133 9.3 6.0 155 9.6 8.2 117
Monte Cristo 8932 19.6 11.2 175 18.4 12.6 146
Salt River Summit 7640 9.3 5.8 160 9.5 8.1 117
Spring Creek Divide 9000 13.5 11.2 121 14.1 12.0 118
Trial Lake 9992 18.8 9.7 194 19.3 11.0 175
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Basin Index (%) 165 138
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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.