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 9 , 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 8.7 8.5 102 9.6 11.0 87
Blind Bull Sum 8650 11.4 10.6 108 8.0 8.9 90
Cottonwood Creek 7670 10.8 9.2 117 11.6 11.8 98
East Rim Divide 7930 5.4 5.0 108 5.5 5.8 95
Grand Targhee 9260 22.0 21.8 101 13.8 17.0 81
Granite Creek 6770 7.8 7.2 108 7.3 9.8 74
Grassy Lake 7265 15.2 13.8 110 18.7 17.8 105
Gros Ventre Summit 8750 6.7 6.9 97 6.5 6.8 96
Gunsight Pass 9820 6.6 6.6 100 6.6 7.3 90
Lewis Lake Divide 7850 18.4 14.5 127 20.8 17.1 122
Loomis Park 8240 7.6 7.0 109 7.8 8.4 93
Phillips Bench 8200 13.9 11.6 120 14.7 13.4 110
Salt River Summit 7640 8.0 5.4 148 8.1 7.6 107
Snake River Station 6920 10.0 7.6 132 12.1 11.9 102
Somsen Ranch 6800 8.3 5.4 154 9.9 8.8 112
Spring Creek Divide 9000 12.0 10.8 111 12.5 11.4 110
Thumb Divide 7980 11.3 7.2 157 10.9 9.0 121
Togwotee Pass 9580 11.6 11.9 97 11.5 12.3 93
Triple Peak 8500 12.4 9.7 128 12.6 11.8 107
Two Ocean Plateau 9240 17.0 14.6 116 13.5 14.2 95
Willow Creek 8080 15.9 12.4 128 16.2 16.0 101
Younts Peak 8350 8.6 7.2 119 7.7 7.6 101
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Basin Index (%) 116 100
MADISON HEADWATERS IN WYOMING
Black Bear 8170 22.2 18.2 122 22.4 19.8 113
Canyon 7870 7.9 -M * 9.6 -M *
Madison Plateau 7750 15.4 10.6 145 16.4 12.9 127
West Yellowstone 6700 8.5 5.2 163 11.1 7.8 142
Whiskey Creek 6800 10.8 6.8 159 14.5 10.8 134
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Basin Index (%) 139 126
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 9.5 11.4 83 8.6 10.6 81
Canyon 7870 7.9 -M * 9.6 -M *
Evening Star 9200 13.5 13.6 99 15.8 15.9 99
Fisher Creek 9100 18.4 16.6 111 19.5 17.4 112
Monument Peak 8850 10.9 10.2 107 13.2 11.8 112
Northeast Entrance 7350 5.1 4.8 106 7.3 7.0 104
Parker Peak 9400 12.2 11.2 109 12.7 10.8 118
Sylvan Lake 8420 9.8 10.0 98 12.4 12.7 98
Thumb Divide 7980 11.3 7.2 157 10.9 9.0 121
Two Ocean Plateau 9240 17.0 14.6 116 13.5 14.2 95
White Mill 8700 12.9 12.0 108 12.9 12.5 103
Wolverine 7650 6.2 6.0 103 6.8 7.0 97
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Basin Index (%) 108 104
WIND RIVER
Burroughs Creek 8750 5.6 -M * 6.3 -M *
Castle Creek 8400 3.3 3.6 92 4.0 4.8 83
Cold Springs 9630 4.6 4.0 115 5.8 5.2 112
Deer Park 9700 12.9 6.6 195 13.1 8.7 151
Hobbs Park 10100 8.9 6.8 131 8.3 6.4 130
Kirwin 9550 5.0 5.8 86 6.6 6.5 102
Little Warm 9370 5.5 5.0 110 6.4 6.4 100
South Pass 9040 10.1 6.6 153 9.9 7.6 130
St. Lawrence Alt 8620 3.9 -M * 5.7 -M *
Togwotee Pass 9580 11.6 11.9 97 11.5 12.3 93
Townsend Creek 8700 6.1 4.4 139 7.0 5.9 119
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Basin Index (%) 124 114
BIGHORN BASIN
Bald Mtn. 9380 8.6 9.6 90 7.3 8.2 89
Bear Trap Meadow 8200 4.5 3.2 141 5.2 4.6 113
Bone Springs Div 9350 5.8 8.1 72 5.8 7.8 74
Grave Springs 8550 5.3 3.8 139 5.7 4.8 119
Kirwin 9550 5.0 5.8 86 6.6 6.5 102
Marquette 8760 3.6 3.8 95 4.4 5.0 88
Middle Powder 7760 6.2 4.8 129 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 6.4 7.0 91
Shell Creek 9580 6.0 7.6 79 6.7 7.2 93
Timber Creek 7950 2.6 2.5 104 3.1 4.2 74
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Basin Index (%) 98 96
SHOSHONE RIVER
Blackwater 9780 11.2 12.3 91 11.2 12.0 93
Evening Star 9200 13.5 13.6 99 15.8 15.9 99
Marquette 8760 3.6 3.8 95 4.4 5.0 88
Sylvan Lake 8420 9.8 10.0 98 12.4 12.7 98
Sylvan Road 7120 5.5 6.1 90 7.9 10.0 79
Younts Peak 8350 8.6 7.2 119 7.7 7.6 101
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Basin Index (%) 98 94
POWDER RIVER
Bear Trap Meadow 8200 4.5 3.2 141 5.2 4.6 113
Cloud Peak Reservoir 9860 6.9 7.0 99 7.0 6.6 106
Grave Springs 8550 5.3 3.8 139 5.7 4.8 119
Hansen Sawmill 8360 3.9 3.5 111 4.2 4.4 95
Middle Powder 7760 6.2 4.8 129 5.6 5.4 104
Powder River Pass 9480 5.0 5.8 86 6.4 7.0 91
Soldier Park 8720 2.3 2.8 82 3.7 4.8 77
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Basin Index (%) 110 101
TONGUE RIVER
Big Goose 7990 4.5 3.8 118 5.2 5.3 98
Bone Springs Div 9350 5.8 8.1 72 5.8 7.8 74
Burgess Junction 7880 5.9 5.0 118 7.5 6.2 121
Dome Lake 8880 4.0 5.2 77 5.8 6.6 88
Little Goose 8870 4.8 4.6 104 5.8 6.0 97
Sucker Creek 8880 6.1 6.0 102 8.1 6.8 119
Tie Creek 6870 3.5 2.4 146 6.2 5.5 113
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Basin Index (%) 99 100
BELLE FOURCHE
Blind Park 6890 3.6 3.5 103 5.0 5.4 93
Cole Canyon 5910 3.2 2.8 114 4.3 4.4 98
North Rapid Creek 6130 3.7 3.6 103 4.4 4.2 105
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Basin Index (%) 106 98
CHEYENNE RIVER BASIN
Blind Park 6890 3.6 3.5 103 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 12.2 11.2 109 12.4 11.4 109
Blackhall Mtn 9839 16.2 13.1 124 17.0 15.4 110
Cinnabar Park 9707 -M 10.6 * 11.1 12.9 86
Columbine 9167 12.8 10.2 125 13.2 11.4 116
Divide Peak 8730 11.4 9.0 127 13.5 11.2 121
Joe Wright 10158 12.0 9.4 128 14.7 12.4 119
Laprele Creek 8390 4.6 4.3 107 4.9 5.8 84
Med Bow 10512 17.0 -M * 16.4 -M *
Never Summer 10323 13.0 9.6 135 9.3 8.8 106
North French Creek 10153 13.5 12.8 105 13.5 13.2 102
Old Battle 9860 17.0 14.6 116 18.7 16.8 111
Rawah 9069 8.3 5.4 154 9.5 8.4 113
Sage Creek Basin 7850 10.4 6.4 162 10.9 7.1 154
Sand Lake 10098 12.1 12.7 95 12.2 11.4 107
South Brush Creek 8495 7.8 5.5 142 7.2 7.0 103
Tower 10620 24.1 19.0 127 23.8 19.6 121
Webber Springs 9260 12.2 10.2 120 13.4 12.9 104
Whiskey Park 9020 17.9 11.3 158 17.5 14.4 122
Willow Creek Pass 9523 8.4 6.4 131 9.0 6.9 130
Zirkel 9338 13.1 12.8 102 15.6 15.7 99
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Basin Index (%) 123 111
SWEETWATER
Deer Park 9700 12.9 6.6 195 13.1 8.7 151
Larsen Creek 9000 4.6 3.2 144 7.1 6.0 118
South Pass 9040 10.1 6.6 153 9.9 7.6 130
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Basin Index (%) 168 135
LOWER N. PLATTE
Casper Mtn. 7920 5.5 5.8 95 5.6 6.9 81
Laprele Creek 8390 4.6 4.3 107 4.9 5.8 84
Reno Hill 8430 6.6 6.4 103 8.0 7.3 110
Windy Peak 7915 3.8 3.3 115 4.8 5.2 92
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Basin Index (%) 104 92
LARAMIE RIVER
Brooklyn Lake 10250 10.8 10.0 108 11.7 10.6 110
Cinnabar Park 9707 -M 10.6 * 11.1 12.9 86
Crow Creek 8335 2.3 4.0 58 4.4 5.9 75
Deadman Hill 10239 9.0 8.7 103 8.3 8.8 94
Rawah 9069 8.3 5.4 154 9.5 8.4 113
Roach 9740 8.9 7.6 117 10.3 9.5 108
Windy Peak 7915 3.8 3.3 115 4.8 5.2 92
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Basin Index (%) 111 98
S. PLATTE
Crow Creek 8335 2.3 4.0 58 4.4 5.9 75
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Basin Index (%) 58 75
LITTLE SNAKE RIVER
Battle Mountain 7498 9.4 5.2 181 12.5 7.8 160
Divide Peak 8730 11.4 9.0 127 13.5 11.2 121
Elk River 8739 13.6 8.0 170 12.9 9.6 134
Elkhead Divide 8800 15.0 -M * 15.5 -M *
Little Snake River 8928 16.5 11.9 139 20.4 16.8 121
Old Battle 9860 17.0 14.6 116 18.7 16.8 111
Sage Creek Basin 7850 10.4 6.4 162 10.9 7.1 154
Sandstone RS 8152 11.5 5.6 205 13.3 8.8 151
Whiskey Park 9020 17.9 11.3 158 17.5 14.4 122
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Basin Index (%) 150 129
UPPER GREEN RIVER
Big Sandy Opening 9080 7.3 6.6 111 7.2 6.6 109
Blind Bull Sum 8650 11.4 10.6 108 8.0 8.9 90
East Rim Divide 7930 5.4 5.0 108 5.5 5.8 95
Elkhart Park G.S. 9400 6.1 6.0 102 5.5 6.6 83
Gros Ventre Summit 8750 6.7 6.9 97 6.5 6.8 96
Gunsight Pass 9820 6.6 6.6 100 6.6 7.3 90
Indian Creek 9425 13.0 10.5 124 11.1 9.7 114
Kendall R.S. 7740 5.9 5.6 105 6.2 7.0 89
Larsen Creek 9000 4.6 3.2 144 7.1 6.0 118
Loomis Park 8240 7.6 7.0 109 7.8 8.4 93
New Fork Lake 8340 5.6 5.2 108 -M 5.6 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 6.2 5.8 107 7.4 6.8 109
Spring Creek Divide 9000 12.0 10.8 111 12.5 11.4 110
Triple Peak 8500 12.4 9.7 128 12.6 11.8 107
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Basin Index (%) 111 101
LOWER GREEN RIVER
Blacks Fork Jct 8869 7.4 3.8 195 7.5 6.1 123
Buck Pasture 9632 10.0 -M * 11.3 -M *
EF Blacks Fork GS 9360 8.8 4.2 210 6.5 5.4 120
Hams Fork 7840 6.6 5.1 129 6.4 5.8 110
Henrys Fork 10182 -M -M * 7.8 -M *
Hewinta 9500 6.2 4.3 144 8.3 7.0 119
Hickerson Park 9122 5.1 3.2 159 6.0 5.2 115
Hole-in-Rock 9168 4.5 3.2 141 5.8 5.5 105
Indian Creek 9425 13.0 10.5 124 11.1 9.7 114
Kelley R.S. 8180 9.2 6.6 139 9.5 8.8 108
Spirit Lk 10235 9.4 5.7 165 9.4 8.3 113
Steel Creek Park 10158 10.3 6.6 156 10.2 8.2 124
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Basin Index (%) 151 115
UPPER BEAR RIVER
Bear River RS 8777 6.8 4.0 170 8.1 6.0 135
Bug Lake 7987 12.2 7.0 174 10.4 9.0 116
Burts Miller Ranch 8000 5.6 2.9 193 8.5 4.2 202
Chalk Creek #1 9171 13.9 9.8 142 14.6 11.2 130
Giveout 6930 5.6 4.0 140 6.9 6.4 108
Hayden Fork 9130 9.2 6.2 148 12.8 10.0 128
Kelley R.S. 8180 9.2 6.6 139 9.5 8.8 108
Lily Lake 9133 8.8 5.6 157 8.8 8.0 110
Monte Cristo 8932 17.2 10.9 158 17.0 12.4 137
Salt River Summit 7640 8.0 5.4 148 8.1 7.6 107
Spring Creek Divide 9000 12.0 10.8 111 12.5 11.4 110
Trial Lake 9992 15.4 9.0 171 16.1 10.6 152
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Basin Index (%) 151 126
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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.