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 FRIDAY: JANUARY 6 , 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 8.2 104 9.5 10.8 88
Blind Bull Sum 8650 11.3 10.0 113 7.9 8.8 90
Cottonwood Creek 7670 10.7 8.8 122 11.4 11.4 100
East Rim Divide 7930 5.5 4.8 115 5.6 5.5 102
Grand Targhee 9260 21.6 20.6 105 13.6 16.4 83
Granite Creek 6770 7.9 6.9 114 7.3 9.4 78
Grassy Lake 7265 14.9 13.2 113 18.2 17.1 106
Gros Ventre Summit 8750 6.7 6.4 105 6.5 6.4 102
Gunsight Pass 9820 6.6 6.3 105 6.5 7.2 90
Lewis Lake Divide 7850 17.9 13.4 134 20.1 16.9 119
Loomis Park 8240 7.6 6.8 112 7.8 8.0 98
Phillips Bench 8200 13.7 11.4 120 14.1 13.0 108
Salt River Summit 7640 7.9 5.1 155 8.0 7.4 108
Snake River Station 6920 9.7 7.4 131 11.8 11.2 105
Somsen Ranch 6800 8.3 5.1 163 9.8 8.6 114
Spring Creek Divide 9000 11.9 10.3 116 12.2 11.0 111
Thumb Divide 7980 11.1 6.8 163 10.7 8.8 122
Togwotee Pass 9580 11.5 11.6 99 11.3 11.9 95
Triple Peak 8500 12.3 9.0 137 12.5 11.0 114
Two Ocean Plateau 9240 16.7 14.0 119 13.4 13.7 98
Willow Creek 8080 15.6 11.8 132 16.0 15.5 103
Younts Peak 8350 8.5 7.0 121 7.7 7.4 104
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Basin Index (%) 120 102
MADISON HEADWATERS IN WYOMING
Black Bear 8170 21.6 17.6 123 21.8 19.0 115
Canyon 7870 7.8 -M * 9.5 -M *
Madison Plateau 7750 15.0 10.4 144 16.1 12.3 131
West Yellowstone 6700 8.4 5.0 168 10.9 7.5 145
Whiskey Creek 6800 10.6 6.7 158 13.6 9.9 137
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Basin Index (%) 140 128
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 -M 10.8 * -M 10.0 *
Canyon 7870 7.8 -M * 9.5 -M *
Evening Star 9200 13.4 13.2 102 15.7 15.0 105
Fisher Creek 9100 18.1 16.4 110 19.2 17.2 112
Monument Peak 8850 10.8 9.8 110 13.1 11.4 115
Northeast Entrance 7350 5.0 4.6 109 7.2 6.9 104
Parker Peak 9400 12.1 10.9 111 12.5 10.6 118
Sylvan Lake 8420 9.6 9.6 100 12.4 12.4 100
Thumb Divide 7980 11.1 6.8 163 10.7 8.8 122
Two Ocean Plateau 9240 16.7 14.0 119 13.4 13.7 98
White Mill 8700 12.7 11.4 111 12.7 11.8 108
Wolverine 7650 6.3 5.6 112 6.9 6.6 105
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Basin Index (%) 113 108
WIND RIVER
Burroughs Creek 8750 5.7 -M * 6.3 -M *
Castle Creek 8400 3.3 3.6 92 4.0 4.7 85
Cold Springs 9630 4.6 4.0 115 5.8 5.1 114
Deer Park 9700 12.9 6.4 202 13.1 8.5 154
Hobbs Park 10100 8.9 6.8 131 8.3 6.4 130
Kirwin 9550 5.0 5.9 85 6.6 6.4 103
Little Warm 9370 5.4 4.8 112 6.3 6.2 102
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 11.6 99 11.3 11.9 95
Townsend Creek 8700 6.1 4.2 145 7.0 5.8 121
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Basin Index (%) 126 115
BIGHORN BASIN
Bald Mtn. 9380 8.6 9.4 91 7.3 8.1 90
Bear Trap Meadow 8200 4.4 3.0 147 5.2 4.6 113
Bone Springs Div 9350 5.7 7.9 72 5.8 7.4 78
Grave Springs 8550 5.3 3.7 143 5.7 4.6 124
Kirwin 9550 5.0 5.9 85 6.6 6.4 103
Marquette 8760 3.6 3.7 97 4.4 5.0 88
Middle Powder 7760 6.3 4.6 137 5.6 5.3 106
Owl Creek 8975 3.9 2.8 139 4.6 3.4 135
Powder River Pass 9480 5.0 5.4 93 6.4 6.6 97
Shell Creek 9580 5.9 7.4 80 6.7 7.1 94
Timber Creek 7950 2.6 2.4 108 3.0 4.2 71
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Basin Index (%) 100 98
SHOSHONE RIVER
Blackwater 9780 11.1 12.2 91 11.1 11.4 97
Evening Star 9200 13.4 13.2 102 15.7 15.0 105
Marquette 8760 3.6 3.7 97 4.4 5.0 88
Sylvan Lake 8420 9.6 9.6 100 12.4 12.4 100
Sylvan Road 7120 5.4 6.0 90 7.9 9.6 82
Younts Peak 8350 8.5 7.0 121 7.7 7.4 104
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Basin Index (%) 100 97
POWDER RIVER
Bear Trap Meadow 8200 4.4 3.0 147 5.2 4.6 113
Cloud Peak Reservoir 9860 6.8 6.7 101 6.9 6.6 105
Grave Springs 8550 5.3 3.7 143 5.7 4.6 124
Hansen Sawmill 8360 3.8 3.3 115 4.1 4.2 98
Middle Powder 7760 6.3 4.6 137 5.6 5.3 106
Powder River Pass 9480 5.0 5.4 93 6.4 6.6 97
Soldier Park 8720 2.1 2.8 75 3.6 4.7 77
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Basin Index (%) 114 102
TONGUE RIVER
Big Goose 7990 4.5 3.6 125 5.2 5.3 98
Bone Springs Div 9350 5.7 7.9 72 5.8 7.4 78
Burgess Junction 7880 5.9 5.0 118 7.4 5.9 125
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 6.6 123
Tie Creek 6870 3.5 2.2 159 6.2 5.5 113
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Basin Index (%) 100 103
BELLE FOURCHE
Blind Park 6890 3.6 3.3 109 5.0 5.2 96
Cole Canyon 5910 3.1 2.6 119 4.2 4.2 100
North Rapid Creek 6130 3.6 3.4 106 4.4 4.0 110
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Basin Index (%) 111 101
CHEYENNE RIVER BASIN
Blind Park 6890 3.6 3.3 109 5.0 5.2 96
North Rapid Creek 6130 3.6 3.4 106 4.4 4.0 110
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Basin Index (%) 107 102
UPPER N. PLATTE
Arapaho Ridge 10976 12.0 10.6 113 12.2 10.8 113
Blackhall Mtn 9839 15.5 12.8 121 16.5 14.7 112
Cinnabar Park 9707 -M 9.7 * 10.8 12.1 89
Columbine 9167 12.2 9.2 133 12.6 11.1 114
Divide Peak 8730 10.7 8.4 127 12.9 10.6 122
Joe Wright 10158 11.6 9.2 126 14.2 12.0 118
Laprele Creek 8390 4.5 3.8 118 4.8 5.5 87
Med Bow 10512 16.4 -M * 15.9 -M *
Never Summer 10323 12.6 9.0 140 8.9 8.6 103
North French Creek 10153 12.8 12.5 102 12.8 12.8 100
Old Battle 9860 16.3 13.3 123 18.2 16.1 113
Rawah 9069 8.1 5.2 156 9.3 8.0 116
Sage Creek Basin 7850 9.8 6.2 158 10.4 7.0 149
Sand Lake 10098 11.7 12.2 96 11.9 11.4 104
South Brush Creek 8495 7.3 5.1 143 6.7 6.4 105
Tower 10620 22.6 17.6 128 22.4 18.4 122
Webber Springs 9260 12.0 9.7 124 13.1 12.4 106
Whiskey Park 9020 17.0 10.1 168 16.7 13.7 122
Willow Creek Pass 9523 8.2 6.2 132 8.9 6.8 131
Zirkel 9338 12.8 11.3 113 15.2 14.8 103
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Basin Index (%) 126 112
SWEETWATER
Deer Park 9700 12.9 6.4 202 13.1 8.5 154
Larsen Creek 9000 4.6 3.0 153 7.1 5.8 122
South Pass 9040 10.0 6.6 152 9.8 7.6 129
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Basin Index (%) 172 137
LOWER N. PLATTE
Casper Mtn. 7920 5.6 5.4 104 5.6 6.6 85
Laprele Creek 8390 4.5 3.8 118 4.8 5.5 87
Reno Hill 8430 6.6 6.2 106 7.9 7.0 113
Windy Peak 7915 3.7 3.2 116 4.7 5.0 94
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Basin Index (%) 110 95
LARAMIE RIVER
Brooklyn Lake 10250 10.5 9.6 109 11.5 10.1 114
Cinnabar Park 9707 -M 9.7 * 10.8 12.1 89
Crow Creek 8335 2.1 4.0 52 4.2 5.7 74
Deadman Hill 10239 8.7 8.3 105 8.1 8.6 94
Rawah 9069 8.1 5.2 156 9.3 8.0 116
Roach 9740 8.7 7.3 119 10.0 9.2 109
Windy Peak 7915 3.7 3.2 116 4.7 5.0 94
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Basin Index (%) 111 100
S. PLATTE
Crow Creek 8335 2.1 4.0 52 4.2 5.7 74
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Basin Index (%) 52 74
LITTLE SNAKE RIVER
Battle Mountain 7498 8.7 5.0 174 11.8 7.6 155
Divide Peak 8730 10.7 8.4 127 12.9 10.6 122
Elk River 8739 13.0 7.5 173 12.5 9.0 139
Elkhead Divide 8800 14.3 -M * 14.8 -M *
Little Snake River 8928 15.6 11.2 139 19.6 16.3 120
Old Battle 9860 16.3 13.3 123 18.2 16.1 113
Sage Creek Basin 7850 9.8 6.2 158 10.4 7.0 149
Sandstone RS 8152 10.7 5.2 206 12.4 8.4 148
Whiskey Park 9020 17.0 10.1 168 16.7 13.7 122
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Basin Index (%) 152 129
UPPER GREEN RIVER
Big Sandy Opening 9080 7.3 6.4 114 7.2 6.6 109
Blind Bull Sum 8650 11.3 10.0 113 7.9 8.8 90
East Rim Divide 7930 5.5 4.8 115 5.6 5.5 102
Elkhart Park G.S. 9400 6.1 6.0 102 5.5 6.4 86
Gros Ventre Summit 8750 6.7 6.4 105 6.5 6.4 102
Gunsight Pass 9820 6.6 6.3 105 6.5 7.2 90
Indian Creek 9425 12.8 10.2 125 10.9 9.4 116
Kendall R.S. 7740 5.8 5.6 104 6.2 6.9 90
Larsen Creek 9000 4.6 3.0 153 7.1 5.8 122
Loomis Park 8240 7.6 6.8 112 7.8 8.0 98
New Fork Lake 8340 5.6 5.0 112 -M 5.6 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 6.2 5.5 113 7.4 6.7 110
Spring Creek Divide 9000 11.9 10.3 116 12.2 11.0 111
Triple Peak 8500 12.3 9.0 137 12.5 11.0 114
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Basin Index (%) 116 104
LOWER GREEN RIVER
Blacks Fork Jct 8869 7.2 3.5 206 7.3 5.9 124
Buck Pasture 9632 9.7 -M * 10.9 -M *
EF Blacks Fork GS 9360 8.6 4.0 215 6.3 5.2 121
Hams Fork 7840 6.6 4.8 138 6.3 5.4 117
Henrys Fork 10182 -M -M * 7.5 -M *
Hewinta 9500 6.1 4.0 152 8.1 6.7 121
Hickerson Park 9122 5.1 3.1 165 6.0 5.0 120
Hole-in-Rock 9168 4.4 3.1 142 5.9 5.4 109
Indian Creek 9425 12.8 10.2 125 10.9 9.4 116
Kelley R.S. 8180 9.2 6.3 146 9.4 8.2 115
Spirit Lk 10235 9.6 5.5 175 9.5 8.2 116
Steel Creek Park 10158 10.0 6.4 156 9.9 7.6 130
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Basin Index (%) 156 119
UPPER BEAR RIVER
Bear River RS 8777 6.7 3.8 176 7.8 5.7 137
Bug Lake 7987 11.9 6.6 180 10.1 8.4 120
Burts Miller Ranch 8000 5.7 2.7 211 8.4 4.2 200
Chalk Creek #1 9171 13.6 9.4 145 14.3 11.0 130
Giveout 6930 5.6 3.7 151 6.9 6.0 115
Hayden Fork 9130 8.9 5.7 156 12.4 9.6 129
Kelley R.S. 8180 9.2 6.3 146 9.4 8.2 115
Lily Lake 9133 8.5 5.3 160 8.5 7.8 109
Monte Cristo 8932 16.6 10.4 160 16.4 11.8 139
Salt River Summit 7640 7.9 5.1 155 8.0 7.4 108
Spring Creek Divide 9000 11.9 10.3 116 12.2 11.0 111
Trial Lake 9992 15.1 8.4 180 15.2 10.2 149
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Basin Index (%) 156 128
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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.
