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 WEDNESDAY: JANUARY 11 , 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 9.1 9.0 101 10.0 11.1 90
Blind Bull Sum 8650 12.0 11.5 104 8.5 9.6 89
Cottonwood Creek 7670 11.9 9.4 127 12.7 12.0 106
East Rim Divide 7930 5.9 5.1 116 6.1 6.0 102
Grand Targhee 9260 22.4 22.2 101 14.0 17.2 81
Granite Creek 6770 8.5 7.7 110 7.9 10.0 79
Grassy Lake 7265 15.8 14.8 107 19.1 18.1 106
Gros Ventre Summit 8750 7.1 6.9 103 6.7 6.8 99
Gunsight Pass 9820 6.9 6.7 103 6.8 7.4 92
Lewis Lake Divide 7850 19.0 15.0 127 21.2 17.8 119
Loomis Park 8240 8.2 7.1 115 8.3 8.8 94
Phillips Bench 8200 14.6 11.9 123 15.4 13.4 115
Salt River Summit 7640 9.4 5.6 168 9.5 7.8 122
Snake River Station 6920 10.2 8.1 126 12.3 12.1 102
Somsen Ranch 6800 8.9 5.6 159 10.6 9.0 118
Spring Creek Divide 9000 13.3 11.0 121 13.7 11.7 117
Thumb Divide 7980 11.5 7.6 151 11.1 9.2 121
Togwotee Pass 9580 11.8 12.0 98 11.6 12.7 91
Triple Peak 8500 13.2 10.6 125 13.4 12.2 110
Two Ocean Plateau 9240 17.1 15.6 110 13.9 14.6 95
Willow Creek 8080 17.2 13.2 130 17.3 16.6 104
Younts Peak 8350 8.6 7.4 116 7.8 7.8 100
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Basin Index (%) 117 102
MADISON HEADWATERS IN WYOMING
Black Bear 8170 22.9 19.3 119 23.2 20.0 116
Canyon 7870 8.0 -M * 9.8 -M *
Madison Plateau 7750 15.9 11.1 143 16.8 13.2 127
West Yellowstone 6700 8.8 5.5 160 11.3 7.8 145
Whiskey Creek 6800 11.2 7.2 156 14.7 10.9 135
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Basin Index (%) 136 127
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 9.6 11.6 83 8.6 11.0 78
Canyon 7870 8.0 -M * 9.8 -M *
Evening Star 9200 13.7 14.0 98 16.0 16.0 100
Fisher Creek 9100 19.0 17.2 110 19.9 17.6 113
Monument Peak 8850 11.2 10.6 106 13.4 12.1 111
Northeast Entrance 7350 5.1 4.8 106 7.4 7.0 106
Parker Peak 9400 12.4 11.4 109 12.9 11.0 117
Sylvan Lake 8420 9.9 10.2 97 12.6 13.0 97
Thumb Divide 7980 11.5 7.6 151 11.1 9.2 121
Two Ocean Plateau 9240 17.1 15.6 110 13.9 14.6 95
White Mill 8700 13.3 12.4 107 13.2 12.6 105
Wolverine 7650 6.1 6.0 102 6.8 7.1 96
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Basin Index (%) 106 104
WIND RIVER
Burroughs Creek 8750 5.7 -M * 6.4 -M *
Castle Creek 8400 3.3 3.6 92 4.0 4.9 82
Cold Springs 9630 4.7 4.1 115 5.8 5.2 112
Deer Park 9700 13.6 6.8 200 13.9 8.7 160
Hobbs Park 10100 9.2 6.9 133 8.6 6.5 132
Kirwin 9550 5.0 6.0 83 6.7 6.6 102
Little Warm 9370 5.6 5.2 108 6.6 6.6 100
South Pass 9040 10.6 6.6 161 10.1 7.6 133
St. Lawrence Alt 8620 4.0 -M * 5.8 -M *
Togwotee Pass 9580 11.8 12.0 98 11.6 12.7 91
Townsend Creek 8700 6.4 4.4 145 7.3 6.0 122
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Basin Index (%) 126 115
BIGHORN BASIN
Bald Mtn. 9380 8.6 9.8 88 7.3 8.2 89
Bear Trap Meadow 8200 4.5 3.4 132 5.3 4.7 113
Bone Springs Div 9350 5.7 8.2 70 5.8 8.0 72
Grave Springs 8550 5.4 3.8 142 5.8 4.9 118
Kirwin 9550 5.0 6.0 83 6.7 6.6 102
Marquette 8760 3.7 3.8 97 4.4 5.2 85
Middle Powder 7760 6.3 4.8 131 5.6 5.4 104
Owl Creek 8975 4.0 2.8 143 4.6 3.4 135
Powder River Pass 9480 5.0 5.8 86 6.5 7.0 93
Shell Creek 9580 6.0 7.9 76 6.7 7.4 91
Timber Creek 7950 2.6 2.5 104 3.1 4.2 74
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Basin Index (%) 97 95
SHOSHONE RIVER
Blackwater 9780 11.3 12.4 91 11.3 12.1 93
Evening Star 9200 13.7 14.0 98 16.0 16.0 100
Marquette 8760 3.7 3.8 97 4.4 5.2 85
Sylvan Lake 8420 9.9 10.2 97 12.6 13.0 97
Sylvan Road 7120 5.4 6.2 87 7.9 10.2 77
Younts Peak 8350 8.6 7.4 116 7.8 7.8 100
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Basin Index (%) 97 93
POWDER RIVER
Bear Trap Meadow 8200 4.5 3.4 132 5.3 4.7 113
Cloud Peak Reservoir 9860 6.8 7.1 96 6.9 6.8 101
Grave Springs 8550 5.4 3.8 142 5.8 4.9 118
Hansen Sawmill 8360 3.8 3.6 106 4.2 4.6 91
Middle Powder 7760 6.3 4.8 131 5.6 5.4 104
Powder River Pass 9480 5.0 5.8 86 6.5 7.0 93
Soldier Park 8720 2.1 2.9 72 3.6 4.8 75
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Basin Index (%) 108 99
TONGUE RIVER
Big Goose 7990 4.4 3.9 113 5.2 5.4 96
Bone Springs Div 9350 5.7 8.2 70 5.8 8.0 72
Burgess Junction 7880 5.9 5.1 116 7.3 6.4 114
Dome Lake 8880 3.9 5.5 71 5.8 6.6 88
Little Goose 8870 4.8 4.8 100 5.8 6.0 97
Sucker Creek 8880 6.1 6.0 102 8.1 6.8 119
Tie Creek 6870 3.4 2.4 142 6.2 5.6 111
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Basin Index (%) 95 99
BELLE FOURCHE
Blind Park 6890 3.7 3.6 103 5.0 5.4 93
Cole Canyon 5910 3.1 2.8 111 4.2 4.4 95
North Rapid Creek 6130 3.7 3.6 103 4.4 4.2 105
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Basin Index (%) 105 97
CHEYENNE RIVER BASIN
Blind Park 6890 3.7 3.6 103 5.0 5.4 93
North Rapid Creek 6130 3.7 3.6 103 4.4 4.2 105
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Basin Index (%) 103 98
UPPER N. PLATTE
Arapaho Ridge 10976 13.3 11.2 119 13.3 11.6 115
Blackhall Mtn 9839 18.0 13.2 136 18.6 15.6 119
Cinnabar Park 9707 -M 10.7 * 11.4 13.0 88
Columbine 9167 13.7 10.8 127 14.0 11.7 120
Divide Peak 8730 12.0 9.4 128 14.2 11.6 122
Joe Wright 10158 12.3 9.7 127 14.9 12.6 118
Laprele Creek 8390 5.1 4.4 116 5.3 5.8 91
Med Bow 10512 17.9 -M * 17.1 -M *
Never Summer 10323 13.5 9.8 138 9.6 9.2 104
North French Creek 10153 14.0 13.6 103 13.9 13.7 101
Old Battle 9860 19.4 15.0 129 21.2 17.5 121
Rawah 9069 8.4 5.6 150 9.6 8.5 113
Sage Creek Basin 7850 11.1 6.5 171 11.6 7.2 161
Sand Lake 10098 12.9 13.1 98 13.0 11.9 109
South Brush Creek 8495 7.9 5.6 141 7.3 7.0 104
Tower 10620 26.3 19.4 136 25.6 20.0 128
Webber Springs 9260 14.1 10.6 133 15.4 13.2 117
Whiskey Park 9020 19.4 11.4 170 18.7 14.7 127
Willow Creek Pass 9523 9.1 6.5 140 9.8 7.0 140
Zirkel 9338 14.4 13.8 104 16.8 16.0 105
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Basin Index (%) 129 116
SWEETWATER
Deer Park 9700 13.6 6.8 200 13.9 8.7 160
Larsen Creek 9000 5.6 3.8 147 8.0 6.5 123
South Pass 9040 10.6 6.6 161 10.1 7.6 133
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Basin Index (%) 173 140
LOWER N. PLATTE
Casper Mtn. 7920 6.0 5.9 102 6.1 7.0 87
Laprele Creek 8390 5.1 4.4 116 5.3 5.8 91
Reno Hill 8430 7.1 6.6 108 8.4 7.4 114
Windy Peak 7915 4.0 3.4 118 5.0 5.2 96
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Basin Index (%) 109 98
LARAMIE RIVER
Brooklyn Lake 10250 11.6 10.2 114 12.4 10.7 116
Cinnabar Park 9707 -M 10.7 * 11.4 13.0 88
Crow Creek 8335 2.2 4.2 52 4.4 5.9 75
Deadman Hill 10239 9.3 8.8 106 8.6 8.8 98
Rawah 9069 8.4 5.6 150 9.6 8.5 113
Roach 9740 9.6 8.0 120 11.0 9.6 115
Windy Peak 7915 4.0 3.4 118 5.0 5.2 96
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Basin Index (%) 112 101
S. PLATTE
Crow Creek 8335 2.2 4.2 52 4.4 5.9 75
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Basin Index (%) 52 75
LITTLE SNAKE RIVER
Battle Mountain 7498 9.7 5.3 183 12.8 8.0 160
Divide Peak 8730 12.0 9.4 128 14.2 11.6 122
Elk River 8739 14.9 8.0 186 13.7 9.8 140
Elkhead Divide 8800 17.0 -M * 17.3 -M *
Little Snake River 8928 19.1 12.4 154 23.0 17.6 131
Old Battle 9860 19.4 15.0 129 21.2 17.5 121
Sage Creek Basin 7850 11.1 6.5 171 11.6 7.2 161
Sandstone RS 8152 12.6 6.0 210 14.2 9.0 158
Whiskey Park 9020 19.4 11.4 170 18.7 14.7 127
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Basin Index (%) 160 136
UPPER GREEN RIVER
Big Sandy Opening 9080 8.4 6.9 122 8.3 7.0 119
Blind Bull Sum 8650 12.0 11.5 104 8.5 9.6 89
East Rim Divide 7930 5.9 5.1 116 6.1 6.0 102
Elkhart Park G.S. 9400 6.5 6.1 107 6.0 6.8 88
Gros Ventre Summit 8750 7.1 6.9 103 6.7 6.8 99
Gunsight Pass 9820 6.9 6.7 103 6.8 7.4 92
Indian Creek 9425 14.7 10.6 139 12.6 9.8 129
Kendall R.S. 7740 6.4 6.0 107 6.7 7.2 93
Larsen Creek 9000 5.6 3.8 147 8.0 6.5 123
Loomis Park 8240 8.2 7.1 115 8.3 8.8 94
New Fork Lake 8340 6.0 5.4 111 -M 6.0 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 7.2 6.1 118 8.3 6.9 120
Spring Creek Divide 9000 13.3 11.0 121 13.7 11.7 117
Triple Peak 8500 13.2 10.6 125 13.4 12.2 110
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Basin Index (%) 117 106
LOWER GREEN RIVER
Blacks Fork Jct 8869 7.7 3.8 203 7.8 6.2 126
Buck Pasture 9632 10.8 -M * 12.0 -M *
EF Blacks Fork GS 9360 9.0 4.3 209 6.7 5.4 124
Hams Fork 7840 8.2 5.2 158 7.8 5.8 134
Henrys Fork 10182 -M -M * 8.1 -M *
Hewinta 9500 6.4 4.4 145 8.6 7.2 119
Hickerson Park 9122 5.4 3.2 169 6.2 5.2 119
Hole-in-Rock 9168 4.8 3.3 145 6.2 5.5 113
Indian Creek 9425 14.7 10.6 139 12.6 9.8 129
Kelley R.S. 8180 10.9 6.6 165 11.3 9.0 126
Spirit Lk 10235 10.4 5.6 186 10.2 8.4 121
Steel Creek Park 10158 10.7 6.8 157 10.6 8.2 129
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Basin Index (%) 164 124
UPPER BEAR RIVER
Bear River RS 8777 7.3 4.2 174 8.6 6.1 141
Bug Lake 7987 13.6 7.4 184 11.5 9.0 128
Burts Miller Ranch 8000 6.1 3.1 197 8.8 4.2 210
Chalk Creek #1 9171 16.2 10.3 157 16.6 11.4 146
Giveout 6930 7.0 4.1 171 8.1 6.4 127
Hayden Fork 9130 10.2 6.4 159 13.8 10.0 138
Kelley R.S. 8180 10.9 6.6 165 11.3 9.0 126
Lily Lake 9133 9.2 5.7 161 9.3 8.0 116
Monte Cristo 8932 18.9 11.2 169 18.0 12.4 145
Salt River Summit 7640 9.4 5.6 168 9.5 7.8 122
Spring Creek Divide 9000 13.3 11.0 121 13.7 11.7 117
Trial Lake 9992 18.4 9.4 196 19.0 10.8 176
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Basin Index (%) 165 139
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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.
