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 8 , 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 8.5 8.3 102 9.5 11.0 86
Blind Bull Sum 8650 11.2 10.3 109 7.9 8.8 90
Cottonwood Creek 7670 10.8 9.1 119 11.6 11.8 98
East Rim Divide 7930 5.4 4.9 110 5.5 5.6 98
Grand Targhee 9260 21.8 21.3 102 13.8 16.6 83
Granite Creek 6770 7.8 7.0 111 7.2 9.6 75
Grassy Lake 7265 14.9 13.6 110 18.3 17.4 105
Gros Ventre Summit 8750 6.6 6.7 99 6.3 6.6 95
Gunsight Pass 9820 6.5 6.5 100 6.4 7.2 89
Lewis Lake Divide 7850 18.0 14.1 128 20.2 17.0 119
Loomis Park 8240 7.5 7.0 107 7.7 8.0 96
Phillips Bench 8200 13.7 11.6 118 14.5 13.2 110
Salt River Summit 7640 8.1 5.2 156 8.2 7.6 108
Snake River Station 6920 9.7 7.6 128 11.7 11.8 99
Somsen Ranch 6800 8.3 5.4 154 9.8 8.6 114
Spring Creek Divide 9000 12.0 10.6 113 12.4 11.2 111
Thumb Divide 7980 11.1 7.0 159 10.6 8.8 120
Togwotee Pass 9580 11.5 11.8 97 11.5 12.2 94
Triple Peak 8500 12.2 9.5 128 12.3 11.6 106
Two Ocean Plateau 9240 16.7 14.4 116 13.4 14.0 96
Willow Creek 8080 15.9 12.1 131 16.2 15.7 103
Younts Peak 8350 8.2 7.2 114 7.3 7.6 96
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Basin Index (%) 117 100
MADISON HEADWATERS IN WYOMING
Black Bear 8170 21.7 18.1 120 22.0 19.4 113
Canyon 7870 7.7 -M * 9.5 -M *
Madison Plateau 7750 15.0 10.6 142 16.1 12.8 126
West Yellowstone 6700 8.4 5.2 162 10.9 7.8 140
Whiskey Creek 6800 10.5 6.8 154 14.1 10.2 138
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Basin Index (%) 137 126
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 9.4 11.4 82 8.5 10.4 82
Canyon 7870 7.7 -M * 9.5 -M *
Evening Star 9200 13.4 13.5 99 15.7 15.4 102
Fisher Creek 9100 18.2 16.5 110 19.2 17.4 110
Monument Peak 8850 10.8 9.8 110 13.0 11.7 111
Northeast Entrance 7350 5.0 4.7 106 7.3 7.0 104
Parker Peak 9400 12.0 11.2 107 12.4 10.8 115
Sylvan Lake 8420 9.6 10.0 96 12.4 12.6 98
Thumb Divide 7980 11.1 7.0 159 10.6 8.8 120
Two Ocean Plateau 9240 16.7 14.4 116 13.4 14.0 96
White Mill 8700 12.8 11.6 110 12.7 12.4 102
Wolverine 7650 6.1 6.0 102 6.8 6.9 99
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Basin Index (%) 108 104
WIND RIVER
Burroughs Creek 8750 5.6 -M * 6.3 -M *
Castle Creek 8400 3.2 3.6 89 3.9 4.8 81
Cold Springs 9630 4.6 4.0 115 5.8 5.2 112
Deer Park 9700 12.9 6.5 198 13.1 8.6 152
Hobbs Park 10100 8.9 6.9 129 8.3 6.4 130
Kirwin 9550 4.9 5.9 83 6.6 6.5 102
Little Warm 9370 5.4 5.0 108 6.3 6.4 98
South Pass 9040 10.0 6.6 152 9.8 7.6 129
St. Lawrence Alt 8620 3.9 -M * 5.7 -M *
Togwotee Pass 9580 11.5 11.8 97 11.5 12.2 94
Townsend Creek 8700 6.1 4.4 139 7.0 5.9 119
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Basin Index (%) 123 114
BIGHORN BASIN
Bald Mtn. 9380 8.6 9.6 90 7.3 8.2 89
Bear Trap Meadow 8200 4.4 3.2 138 5.2 4.6 113
Bone Springs Div 9350 5.6 8.0 70 5.7 7.7 74
Grave Springs 8550 5.3 3.7 143 5.7 4.7 121
Kirwin 9550 4.9 5.9 83 6.6 6.5 102
Marquette 8760 3.6 3.8 95 4.4 5.0 88
Middle Powder 7760 6.2 4.7 132 5.5 5.4 102
Owl Creek 8975 3.9 2.8 139 4.6 3.4 135
Powder River Pass 9480 5.0 5.8 86 6.4 7.0 91
Shell Creek 9580 5.9 7.6 78 6.7 7.2 93
Timber Creek 7950 2.6 2.5 104 3.0 4.2 71
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Basin Index (%) 97 96
SHOSHONE RIVER
Blackwater 9780 11.1 12.2 91 11.0 11.8 93
Evening Star 9200 13.4 13.5 99 15.7 15.4 102
Marquette 8760 3.6 3.8 95 4.4 5.0 88
Sylvan Lake 8420 9.6 10.0 96 12.4 12.6 98
Sylvan Road 7120 5.4 6.1 89 7.9 9.9 80
Younts Peak 8350 8.2 7.2 114 7.3 7.6 96
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Basin Index (%) 97 94
POWDER RIVER
Bear Trap Meadow 8200 4.4 3.2 138 5.2 4.6 113
Cloud Peak Reservoir 9860 6.8 7.0 97 6.9 6.6 105
Grave Springs 8550 5.3 3.7 143 5.7 4.7 121
Hansen Sawmill 8360 3.7 3.4 109 4.1 4.2 98
Middle Powder 7760 6.2 4.7 132 5.5 5.4 102
Powder River Pass 9480 5.0 5.8 86 6.4 7.0 91
Soldier Park 8720 2.1 2.8 75 3.5 4.7 74
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Basin Index (%) 109 100
TONGUE RIVER
Big Goose 7990 4.4 3.7 119 5.2 5.3 98
Bone Springs Div 9350 5.6 8.0 70 5.7 7.7 74
Burgess Junction 7880 5.9 5.0 118 7.3 6.2 118
Dome Lake 8880 3.9 5.2 75 5.8 6.4 91
Little Goose 8870 4.8 4.7 102 5.8 6.0 97
Sucker Creek 8880 6.0 5.9 102 8.1 6.7 121
Tie Creek 6870 3.5 2.4 146 6.2 5.5 113
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Basin Index (%) 98 101
BELLE FOURCHE
Blind Park 6890 3.7 3.4 109 5.0 5.2 96
Cole Canyon 5910 3.1 2.7 115 4.3 4.2 102
North Rapid Creek 6130 3.6 3.6 100 4.4 4.0 110
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Basin Index (%) 107 102
CHEYENNE RIVER BASIN
Blind Park 6890 3.7 3.4 109 5.0 5.2 96
North Rapid Creek 6130 3.6 3.6 100 4.4 4.0 110
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Basin Index (%) 104 102
UPPER N. PLATTE
Arapaho Ridge 10976 12.2 11.2 109 12.3 11.3 109
Blackhall Mtn 9839 16.0 13.1 122 16.9 15.1 112
Cinnabar Park 9707 -M 10.4 * 11.0 12.5 88
Columbine 9167 12.7 10.0 127 12.9 11.4 113
Divide Peak 8730 11.3 8.7 130 13.4 11.1 121
Joe Wright 10158 12.0 9.3 129 14.7 12.2 120
Laprele Creek 8390 4.6 4.2 110 4.9 5.7 86
Med Bow 10512 16.9 -M * 16.3 -M *
Never Summer 10323 13.1 9.6 136 9.1 8.8 103
North French Creek 10153 13.4 12.8 105 13.4 13.0 103
Old Battle 9860 16.9 14.5 117 18.6 16.7 111
Rawah 9069 8.2 5.4 152 9.5 8.3 114
Sage Creek Basin 7850 10.3 6.3 163 10.9 7.0 156
Sand Lake 10098 11.9 12.6 94 12.1 11.4 106
South Brush Creek 8495 7.7 5.4 143 7.1 6.7 106
Tower 10620 24.0 18.8 128 23.6 19.5 121
Webber Springs 9260 12.2 10.2 120 13.3 12.8 104
Whiskey Park 9020 17.8 11.2 159 17.4 14.4 121
Willow Creek Pass 9523 8.3 6.3 132 9.0 6.9 130
Zirkel 9338 13.0 12.6 103 15.5 15.6 99
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Basin Index (%) 124 111
SWEETWATER
Deer Park 9700 12.9 6.5 198 13.1 8.6 152
Larsen Creek 9000 4.5 3.2 141 7.0 6.0 117
South Pass 9040 10.0 6.6 152 9.8 7.6 129
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Basin Index (%) 168 135
LOWER N. PLATTE
Casper Mtn. 7920 5.5 5.6 98 5.6 6.8 82
Laprele Creek 8390 4.6 4.2 110 4.9 5.7 86
Reno Hill 8430 6.5 6.4 102 7.9 7.2 110
Windy Peak 7915 3.7 3.2 116 4.7 5.2 90
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Basin Index (%) 105 93
LARAMIE RIVER
Brooklyn Lake 10250 10.7 9.9 108 11.6 10.4 112
Cinnabar Park 9707 -M 10.4 * 11.0 12.5 88
Crow Creek 8335 2.2 4.1 54 4.3 5.9 73
Deadman Hill 10239 8.7 8.7 100 8.2 8.8 93
Rawah 9069 8.2 5.4 152 9.5 8.3 114
Roach 9740 8.9 7.5 119 10.2 9.4 109
Windy Peak 7915 3.7 3.2 116 4.7 5.2 90
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Basin Index (%) 109 98
S. PLATTE
Crow Creek 8335 2.2 4.1 54 4.3 5.9 73
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Basin Index (%) 54 73
LITTLE SNAKE RIVER
Battle Mountain 7498 9.3 5.2 179 12.4 7.7 161
Divide Peak 8730 11.3 8.7 130 13.4 11.1 121
Elk River 8739 13.5 7.9 171 12.8 9.6 133
Elkhead Divide 8800 14.9 -M * 15.4 -M *
Little Snake River 8928 16.3 11.6 141 20.2 16.7 121
Old Battle 9860 16.9 14.5 117 18.6 16.7 111
Sage Creek Basin 7850 10.3 6.3 163 10.9 7.0 156
Sandstone RS 8152 11.5 5.2 221 13.2 8.6 153
Whiskey Park 9020 17.8 11.2 159 17.4 14.4 121
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Basin Index (%) 151 130
UPPER GREEN RIVER
Big Sandy Opening 9080 7.1 6.6 108 7.0 6.6 106
Blind Bull Sum 8650 11.2 10.3 109 7.9 8.8 90
East Rim Divide 7930 5.4 4.9 110 5.5 5.6 98
Elkhart Park G.S. 9400 6.0 6.0 100 5.5 6.5 85
Gros Ventre Summit 8750 6.6 6.7 99 6.3 6.6 95
Gunsight Pass 9820 6.5 6.5 100 6.4 7.2 89
Indian Creek 9425 13.0 10.4 125 11.1 9.6 116
Kendall R.S. 7740 5.7 5.6 102 6.1 7.0 87
Larsen Creek 9000 4.5 3.2 141 7.0 6.0 117
Loomis Park 8240 7.5 7.0 107 7.7 8.0 96
New Fork Lake 8340 5.4 5.0 108 -M 5.6 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 6.1 5.7 107 7.3 6.8 107
Spring Creek Divide 9000 12.0 10.6 113 12.4 11.2 111
Triple Peak 8500 12.2 9.5 128 12.3 11.6 106
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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 10.1 -M * 11.4 -M *
EF Blacks Fork GS 9360 8.9 4.2 212 6.6 5.4 122
Hams Fork 7840 6.6 5.0 132 6.4 5.7 112
Henrys Fork 10182 -M -M * 7.7 -M *
Hewinta 9500 6.2 4.2 148 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 5.9 5.4 109
Indian Creek 9425 13.0 10.4 125 11.1 9.6 116
Kelley R.S. 8180 9.2 6.6 139 9.6 8.6 112
Spirit Lk 10235 9.5 5.6 170 9.5 8.3 114
Steel Creek Park 10158 10.3 6.5 158 10.2 8.0 128
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Basin Index (%) 153 117
UPPER BEAR RIVER
Bear River RS 8777 6.9 4.0 172 8.1 5.8 140
Bug Lake 7987 12.2 6.9 177 10.3 9.0 114
Burts Miller Ranch 8000 5.7 2.7 211 8.5 4.2 202
Chalk Creek #1 9171 13.9 9.7 143 14.6 11.2 130
Giveout 6930 5.7 3.9 146 7.0 6.3 111
Hayden Fork 9130 9.2 6.2 148 12.7 10.0 127
Kelley R.S. 8180 9.2 6.6 139 9.6 8.6 112
Lily Lake 9133 8.8 5.4 163 8.8 8.0 110
Monte Cristo 8932 17.2 10.8 159 17.0 12.4 137
Salt River Summit 7640 8.1 5.2 156 8.2 7.6 108
Spring Creek Divide 9000 12.0 10.6 113 12.4 11.2 111
Trial Lake 9992 15.5 9.0 172 16.1 10.6 152
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Basin Index (%) 154 127
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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.
