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 SATURDAY: JANUARY 7 , 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 8.6 8.3 104 9.5 11.0 86
Blind Bull Sum 8650 11.3 10.2 111 7.9 8.8 90
Cottonwood Creek 7670 10.8 9.0 120 11.6 11.6 100
East Rim Divide 7930 5.5 4.8 115 5.6 5.6 100
Grand Targhee 9260 21.8 20.8 105 13.8 16.4 84
Granite Creek 6770 7.8 7.0 111 7.3 9.4 78
Grassy Lake 7265 15.0 13.2 114 18.3 17.2 106
Gros Ventre Summit 8750 6.7 6.6 102 6.6 6.6 100
Gunsight Pass 9820 6.6 6.4 103 6.5 7.2 90
Lewis Lake Divide 7850 17.9 13.8 130 20.3 16.9 120
Loomis Park 8240 7.6 6.8 112 7.7 8.0 96
Phillips Bench 8200 13.8 11.4 121 14.6 13.0 112
Salt River Summit 7640 8.1 5.1 159 8.2 7.5 109
Snake River Station 6920 9.7 7.5 129 11.9 11.6 103
Somsen Ranch 6800 8.4 5.2 162 9.9 8.6 115
Spring Creek Divide 9000 12.1 10.6 114 12.5 11.0 114
Thumb Divide 7980 11.1 6.8 163 10.8 8.8 123
Togwotee Pass 9580 11.6 11.6 100 11.4 12.1 94
Triple Peak 8500 12.4 9.3 133 12.6 11.4 111
Two Ocean Plateau 9240 16.8 14.2 118 13.4 13.8 97
Willow Creek 8080 15.8 12.0 132 16.2 15.6 104
Younts Peak 8350 8.4 7.0 120 7.6 7.4 103
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Basin Index (%) 119 102
MADISON HEADWATERS IN WYOMING
Black Bear 8170 21.7 18.0 121 22.0 19.4 113
Canyon 7870 7.8 -M * 9.6 -M *
Madison Plateau 7750 15.0 10.5 143 16.1 12.6 128
West Yellowstone 6700 8.4 5.0 168 10.9 7.7 142
Whiskey Creek 6800 10.6 6.7 158 14.2 10.1 141
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Basin Index (%) 139 127
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 -M 11.1 * -M 10.1 *
Canyon 7870 7.8 -M * 9.6 -M *
Evening Star 9200 13.4 13.2 102 15.8 15.2 104
Fisher Creek 9100 18.2 16.4 111 19.3 17.2 112
Monument Peak 8850 10.8 9.8 110 13.1 11.6 113
Northeast Entrance 7350 5.1 4.7 109 7.3 7.0 104
Parker Peak 9400 12.2 11.0 111 12.6 10.6 119
Sylvan Lake 8420 9.7 9.6 101 12.4 12.5 99
Thumb Divide 7980 11.1 6.8 163 10.8 8.8 123
Two Ocean Plateau 9240 16.8 14.2 118 13.4 13.8 97
White Mill 8700 12.8 11.5 111 12.8 12.1 106
Wolverine 7650 6.2 5.9 105 6.8 6.8 100
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Basin Index (%) 113 108
WIND RIVER
Burroughs Creek 8750 5.5 -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 6.3 205 13.0 8.5 153
Hobbs Park 10100 8.8 6.9 128 8.2 6.4 128
Kirwin 9550 4.9 5.9 83 6.6 6.4 103
Little Warm 9370 5.4 4.9 110 6.3 6.2 102
South Pass 9040 10.0 6.6 152 9.8 7.6 129
St. Lawrence Alt 8620 3.8 -M * 5.6 -M *
Togwotee Pass 9580 11.6 11.6 100 11.4 12.1 94
Townsend Creek 8700 6.1 4.3 142 6.9 5.8 119
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Basin Index (%) 125 114
BIGHORN BASIN
Bald Mtn. 9380 8.6 9.6 90 7.3 8.1 90
Bear Trap Meadow 8200 4.4 3.1 142 5.2 4.6 113
Bone Springs Div 9350 5.8 7.8 74 5.8 7.6 76
Grave Springs 8550 5.3 3.7 143 5.7 4.6 124
Kirwin 9550 4.9 5.9 83 6.6 6.4 103
Marquette 8760 3.6 3.7 97 4.4 5.0 88
Middle Powder 7760 6.2 4.6 135 5.6 5.3 106
Owl Creek 8975 3.9 2.8 139 4.5 3.4 132
Powder River Pass 9480 5.0 5.6 89 6.5 6.6 98
Shell Creek 9580 6.0 7.5 80 6.7 7.1 94
Timber Creek 7950 2.6 2.5 104 3.1 4.2 74
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Basin Index (%) 99 98
SHOSHONE RIVER
Blackwater 9780 11.1 12.2 91 11.0 11.6 95
Evening Star 9200 13.4 13.2 102 15.8 15.2 104
Marquette 8760 3.6 3.7 97 4.4 5.0 88
Sylvan Lake 8420 9.7 9.6 101 12.4 12.5 99
Sylvan Road 7120 5.3 6.0 88 7.9 9.9 80
Younts Peak 8350 8.4 7.0 120 7.6 7.4 103
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Basin Index (%) 100 96
POWDER RIVER
Bear Trap Meadow 8200 4.4 3.1 142 5.2 4.6 113
Cloud Peak Reservoir 9860 6.8 6.8 100 6.9 6.6 105
Grave Springs 8550 5.3 3.7 143 5.7 4.6 124
Hansen Sawmill 8360 3.8 3.4 112 4.2 4.2 100
Middle Powder 7760 6.2 4.6 135 5.6 5.3 106
Powder River Pass 9480 5.0 5.6 89 6.5 6.6 98
Soldier Park 8720 2.1 2.8 75 3.5 4.7 74
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Basin Index (%) 112 103
TONGUE RIVER
Big Goose 7990 4.4 3.7 119 5.2 5.3 98
Bone Springs Div 9350 5.8 7.8 74 5.8 7.6 76
Burgess Junction 7880 5.9 5.0 118 7.4 6.1 121
Dome Lake 8880 4.0 5.2 77 5.8 6.4 91
Little Goose 8870 4.8 4.7 102 5.8 6.0 97
Sucker Creek 8880 6.1 5.8 105 8.1 6.7 121
Tie Creek 6870 3.5 2.2 159 6.2 5.5 113
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Basin Index (%) 100 102
BELLE FOURCHE
Blind Park 6890 3.6 3.4 106 5.0 5.2 96
Cole Canyon 5910 3.1 2.6 119 4.3 4.2 102
North Rapid Creek 6130 3.6 3.5 103 4.4 4.0 110
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Basin Index (%) 108 102
CHEYENNE RIVER BASIN
Blind Park 6890 3.6 3.4 106 5.0 5.2 96
North Rapid Creek 6130 3.6 3.5 103 4.4 4.0 110
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Basin Index (%) 104 102
UPPER N. PLATTE
Arapaho Ridge 10976 12.2 10.9 112 12.3 11.0 112
Blackhall Mtn 9839 16.0 12.9 124 16.9 15.1 112
Cinnabar Park 9707 -M 10.0 * 11.0 12.4 89
Columbine 9167 12.8 9.6 133 13.1 11.4 115
Divide Peak 8730 11.3 8.5 133 13.5 10.9 124
Joe Wright 10158 11.9 9.3 128 14.6 12.0 122
Laprele Creek 8390 4.6 4.0 115 4.9 5.6 88
Med Bow 10512 16.9 -M * 16.3 -M *
Never Summer 10323 13.0 9.3 140 9.3 8.7 107
North French Creek 10153 13.4 12.7 106 13.4 13.0 103
Old Battle 9860 16.8 14.0 120 18.6 16.6 112
Rawah 9069 8.3 5.2 160 9.5 8.3 114
Sage Creek Basin 7850 10.3 6.3 163 10.9 7.0 156
Sand Lake 10098 12.0 12.5 96 12.1 11.4 106
South Brush Creek 8495 7.7 5.2 148 7.2 6.6 109
Tower 10620 23.8 17.9 133 23.5 19.0 124
Webber Springs 9260 12.2 10.0 122 13.4 12.7 106
Whiskey Park 9020 17.6 10.8 163 17.4 14.0 124
Willow Creek Pass 9523 8.3 6.2 134 9.1 6.9 132
Zirkel 9338 13.0 12.0 108 15.5 15.4 101
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Basin Index (%) 127 113
SWEETWATER
Deer Park 9700 12.9 6.3 205 13.0 8.5 153
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 (%) 170 135
LOWER N. PLATTE
Casper Mtn. 7920 5.5 5.5 100 5.6 6.7 84
Laprele Creek 8390 4.6 4.0 115 4.9 5.6 88
Reno Hill 8430 6.6 6.2 106 8.0 7.0 114
Windy Peak 7915 3.8 3.2 119 4.7 5.0 94
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Basin Index (%) 108 95
LARAMIE RIVER
Brooklyn Lake 10250 10.7 9.8 109 11.6 10.3 113
Cinnabar Park 9707 -M 10.0 * 11.0 12.4 89
Crow Creek 8335 2.2 4.2 52 4.3 5.7 75
Deadman Hill 10239 8.9 8.4 106 8.3 8.8 94
Rawah 9069 8.3 5.2 160 9.5 8.3 114
Roach 9740 8.9 7.4 120 10.3 9.4 110
Windy Peak 7915 3.8 3.2 119 4.7 5.0 94
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Basin Index (%) 112 100
S. PLATTE
Crow Creek 8335 2.2 4.2 52 4.3 5.7 75
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Basin Index (%) 52 75
LITTLE SNAKE RIVER
Battle Mountain 7498 9.5 5.0 190 12.5 7.6 164
Divide Peak 8730 11.3 8.5 133 13.5 10.9 124
Elk River 8739 13.4 7.8 172 12.7 9.3 137
Elkhead Divide 8800 14.9 -M * 15.4 -M *
Little Snake River 8928 16.4 11.4 144 20.4 16.6 123
Old Battle 9860 16.8 14.0 120 18.6 16.6 112
Sage Creek Basin 7850 10.3 6.3 163 10.9 7.0 156
Sandstone RS 8152 11.5 5.2 221 13.2 8.4 157
Whiskey Park 9020 17.6 10.8 163 17.4 14.0 124
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Basin Index (%) 155 132
UPPER GREEN RIVER
Big Sandy Opening 9080 7.1 6.6 108 7.0 6.6 106
Blind Bull Sum 8650 11.3 10.2 111 7.9 8.8 90
East Rim Divide 7930 5.5 4.8 115 5.6 5.6 100
Elkhart Park G.S. 9400 6.1 6.0 102 5.5 6.4 86
Gros Ventre Summit 8750 6.7 6.6 102 6.6 6.6 100
Gunsight Pass 9820 6.6 6.4 103 6.5 7.2 90
Indian Creek 9425 13.0 10.4 125 11.1 9.5 117
Kendall R.S. 7740 5.8 5.6 104 6.2 6.9 90
Larsen Creek 9000 4.5 3.2 141 7.0 6.0 117
Loomis Park 8240 7.6 6.8 112 7.7 8.0 96
New Fork Lake 8340 5.5 5.0 110 -M 5.6 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 6.2 5.6 111 7.4 6.7 110
Spring Creek Divide 9000 12.1 10.6 114 12.5 11.0 114
Triple Peak 8500 12.4 9.3 133 12.6 11.4 111
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Basin Index (%) 114 103
LOWER GREEN RIVER
Blacks Fork Jct 8869 7.4 3.6 206 7.6 5.9 129
Buck Pasture 9632 10.2 -M * 11.3 -M *
EF Blacks Fork GS 9360 8.9 4.2 212 6.6 5.3 125
Hams Fork 7840 6.7 5.0 134 6.4 5.5 116
Henrys Fork 10182 -M -M * 7.7 -M *
Hewinta 9500 6.3 4.0 158 8.3 6.8 122
Hickerson Park 9122 5.1 3.1 165 6.1 5.0 122
Hole-in-Rock 9168 4.5 3.1 145 5.9 5.4 109
Indian Creek 9425 13.0 10.4 125 11.1 9.5 117
Kelley R.S. 8180 9.4 6.4 147 9.7 8.4 115
Spirit Lk 10235 9.5 5.5 173 9.5 8.2 116
Steel Creek Park 10158 10.4 6.5 160 10.3 7.9 130
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Basin Index (%) 157 120
UPPER BEAR RIVER
Bear River RS 8777 6.9 3.8 182 8.1 5.8 140
Bug Lake 7987 12.2 6.8 179 10.3 8.8 117
Burts Miller Ranch 8000 5.8 2.7 215 8.6 4.2 205
Chalk Creek #1 9171 13.9 9.5 146 14.6 11.1 132
Giveout 6930 5.8 3.9 149 7.0 6.2 113
Hayden Fork 9130 9.2 5.9 156 12.8 9.8 131
Kelley R.S. 8180 9.4 6.4 147 9.7 8.4 115
Lily Lake 9133 8.8 5.4 163 8.8 7.9 111
Monte Cristo 8932 17.2 10.6 162 17.0 12.2 139
Salt River Summit 7640 8.1 5.1 159 8.2 7.5 109
Spring Creek Divide 9000 12.1 10.6 114 12.5 11.0 114
Trial Lake 9992 15.5 8.6 180 15.5 10.4 149
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Basin Index (%) 158 129
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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.
