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 TUESDAY: JANUARY 17 , 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 10.0 9.8 102 11.0 12.2 90
Blind Bull Sum 8650 12.6 12.6 100 9.1 10.6 86
Cottonwood Creek 7670 13.0 10.8 120 14.0 13.0 108
East Rim Divide 7930 6.2 5.6 111 6.2 6.6 94
Grand Targhee 9260 25.0 23.0 109 15.6 18.0 87
Granite Creek 6770 9.2 8.6 107 8.4 11.2 75
Grassy Lake 7265 16.6 16.2 102 20.1 19.4 104
Gros Ventre Summit 8750 7.3 7.2 101 6.7 6.9 97
Gunsight Pass 9820 7.4 7.2 103 7.3 7.7 95
Lewis Lake Divide 7850 20.1 15.9 126 22.1 19.2 115
Loomis Park 8240 8.4 8.1 104 8.6 9.4 91
Phillips Bench 8200 15.3 13.2 116 16.2 14.9 109
Salt River Summit 7640 9.8 6.4 153 9.9 8.5 116
Snake River Station 6920 10.9 9.0 121 12.9 13.5 96
Somsen Ranch 6800 9.7 6.8 143 11.2 9.4 119
Spring Creek Divide 9000 13.8 12.6 110 14.5 12.6 115
Thumb Divide 7980 12.2 7.8 156 11.6 9.5 122
Togwotee Pass 9580 12.4 12.9 96 12.1 13.4 90
Triple Peak 8500 13.6 11.6 117 13.7 13.2 104
Two Ocean Plateau 9240 17.9 16.6 108 14.5 15.3 95
Willow Creek 8080 19.0 14.6 130 19.0 17.6 108
Younts Peak 8350 8.8 8.2 107 7.9 8.2 96
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Basin Index (%) 114 101
MADISON HEADWATERS IN WYOMING
Black Bear 8170 24.6 20.8 118 24.6 21.0 117
Canyon 7870 8.4 -M * 10.2 -M *
Madison Plateau 7750 17.0 12.0 142 17.9 13.7 131
West Yellowstone 6700 9.6 6.0 160 12.2 8.2 149
Whiskey Creek 6800 12.1 8.0 151 15.6 11.2 139
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Basin Index (%) 135 130
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 9.9 12.8 77 8.9 11.8 75
Canyon 7870 8.4 -M * 10.2 -M *
Evening Star 9200 14.2 15.0 95 16.4 16.5 99
Fisher Creek 9100 19.7 18.4 107 20.5 18.4 111
Monument Peak 8850 11.5 11.7 98 13.7 12.8 107
Northeast Entrance 7350 5.2 5.2 100 7.6 7.4 103
Parker Peak 9400 12.9 11.8 109 13.3 11.8 113
Sylvan Lake 8420 10.6 10.8 98 13.4 13.3 101
Thumb Divide 7980 12.2 7.8 156 11.6 9.5 122
Two Ocean Plateau 9240 17.9 16.6 108 14.5 15.3 95
White Mill 8700 13.9 14.0 99 13.6 13.4 101
Wolverine 7650 6.0 6.6 91 6.8 7.5 91
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Basin Index (%) 103 102
WIND RIVER
Burroughs Creek 8750 5.7 -M * 6.6 -M *
Castle Creek 8400 3.6 3.9 92 4.2 5.1 82
Cold Springs 9630 4.9 4.2 117 6.1 5.5 111
Deer Park 9700 14.1 7.0 201 14.2 8.9 160
Hobbs Park 10100 9.7 7.1 137 8.9 6.7 133
Kirwin 9550 5.2 6.2 84 7.0 7.1 99
Little Warm 9370 5.8 5.6 104 6.7 7.3 92
South Pass 9040 11.0 6.8 162 10.8 8.2 132
St. Lawrence Alt 8620 4.2 -M * 6.0 -M *
Togwotee Pass 9580 12.4 12.9 96 12.1 13.4 90
Townsend Creek 8700 6.7 4.4 152 7.6 6.2 123
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Basin Index (%) 126 113
BIGHORN BASIN
Bald Mtn. 9380 8.6 10.2 84 7.3 8.9 82
Bear Trap Meadow 8200 4.6 3.4 135 5.4 4.8 112
Bone Springs Div 9350 5.8 9.0 64 5.8 8.4 69
Grave Springs 8550 5.9 4.0 148 6.3 5.0 126
Kirwin 9550 5.2 6.2 84 7.0 7.1 99
Marquette 8760 3.8 3.8 100 4.5 5.4 83
Middle Powder 7760 6.6 5.1 129 5.9 5.5 107
Owl Creek 8975 4.3 3.0 143 4.9 3.5 140
Powder River Pass 9480 5.0 6.2 81 6.5 7.4 88
Shell Creek 9580 6.0 8.4 71 6.8 7.8 87
Timber Creek 7950 2.8 2.6 108 3.2 4.4 73
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Basin Index (%) 95 93
SHOSHONE RIVER
Blackwater 9780 11.7 13.4 87 11.5 12.6 91
Evening Star 9200 14.2 15.0 95 16.4 16.5 99
Marquette 8760 3.8 3.8 100 4.5 5.4 83
Sylvan Lake 8420 10.6 10.8 98 13.4 13.3 101
Sylvan Road 7120 -M 6.9 * -M 10.6 *
Younts Peak 8350 8.8 8.2 107 7.9 8.2 96
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Basin Index (%) 96 96
POWDER RIVER
Bear Trap Meadow 8200 4.6 3.4 135 5.4 4.8 112
Cloud Peak Reservoir 9860 6.9 7.3 95 6.9 7.4 93
Grave Springs 8550 5.9 4.0 148 6.3 5.0 126
Hansen Sawmill 8360 3.7 3.8 97 4.1 4.8 85
Middle Powder 7760 6.6 5.1 129 5.9 5.5 107
Powder River Pass 9480 5.0 6.2 81 6.5 7.4 88
Soldier Park 8720 2.0 3.2 62 3.6 5.0 72
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Basin Index (%) 105 97
TONGUE RIVER
Big Goose 7990 4.5 4.0 112 5.3 5.5 96
Bone Springs Div 9350 5.8 9.0 64 5.8 8.4 69
Burgess Junction 7880 5.9 5.4 109 7.3 6.7 109
Dome Lake 8880 4.0 5.9 68 5.8 6.8 85
Little Goose 8870 4.9 4.8 102 5.9 6.4 92
Sucker Creek 8880 6.2 6.4 97 8.1 7.4 109
Tie Creek 6870 3.5 2.8 125 6.2 5.9 105
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Basin Index (%) 91 94
BELLE FOURCHE
Blind Park 6890 4.0 4.0 100 5.5 5.6 98
Cole Canyon 5910 3.6 2.8 129 4.8 5.0 96
North Rapid Creek 6130 3.9 3.7 105 4.6 4.4 105
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Basin Index (%) 110 99
CHEYENNE RIVER BASIN
Blind Park 6890 4.0 4.0 100 5.5 5.6 98
North Rapid Creek 6130 3.9 3.7 105 4.6 4.4 105
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Basin Index (%) 103 101
UPPER N. PLATTE
Arapaho Ridge 10976 14.3 11.6 123 14.3 12.4 115
Blackhall Mtn 9839 19.1 14.2 135 19.6 15.9 123
Cinnabar Park 9707 -M 11.6 * 12.0 13.3 90
Columbine 9167 15.6 12.1 129 15.5 13.0 119
Divide Peak 8730 13.5 9.8 138 15.6 12.1 129
Joe Wright 10158 13.2 10.0 132 15.9 13.4 119
Laprele Creek 8390 5.6 4.6 122 5.8 6.2 94
Med Bow 10512 19.1 -M * 18.0 -M *
Never Summer 10323 14.3 10.3 139 10.1 9.6 105
North French Creek 10153 15.3 14.7 104 15.3 14.9 103
Old Battle 9860 21.2 15.8 134 22.9 18.6 123
Rawah 9069 8.7 6.2 140 10.0 9.2 109
Sage Creek Basin 7850 11.8 6.8 174 12.3 7.7 160
Sand Lake 10098 13.7 14.0 98 13.7 12.6 109
South Brush Creek 8495 8.4 6.2 135 7.9 7.8 101
Tower 10620 29.4 21.0 140 28.2 21.6 131
Webber Springs 9260 14.9 11.2 133 16.4 14.3 115
Whiskey Park 9020 21.6 13.4 161 20.5 16.4 125
Willow Creek Pass 9523 9.5 6.8 140 10.1 7.1 142
Zirkel 9338 15.6 15.0 104 18.2 17.0 107
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Basin Index (%) 130 117
SWEETWATER
Deer Park 9700 14.1 7.0 201 14.2 8.9 160
Larsen Creek 9000 6.0 4.0 150 8.4 6.7 125
South Pass 9040 11.0 6.8 162 10.8 8.2 132
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Basin Index (%) 175 140
LOWER N. PLATTE
Casper Mtn. 7920 6.8 6.2 110 7.0 7.4 95
Laprele Creek 8390 5.6 4.6 122 5.8 6.2 94
Reno Hill 8430 7.4 6.7 110 8.8 7.7 114
Windy Peak 7915 4.6 3.8 121 5.6 5.5 102
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Basin Index (%) 115 101
LARAMIE RIVER
Brooklyn Lake 10250 12.1 11.1 109 13.0 11.3 115
Cinnabar Park 9707 -M 11.6 * 12.0 13.3 90
Crow Creek 8335 2.5 4.4 57 4.7 5.9 80
Deadman Hill 10239 9.8 9.2 107 9.1 9.3 98
Rawah 9069 8.7 6.2 140 10.0 9.2 109
Roach 9740 10.1 8.7 116 11.7 10.5 111
Windy Peak 7915 4.6 3.8 121 5.6 5.5 102
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Basin Index (%) 110 102
S. PLATTE
Crow Creek 8335 2.5 4.4 57 4.7 5.9 80
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Basin Index (%) 57 80
LITTLE SNAKE RIVER
Battle Mountain 7498 10.3 6.2 166 13.9 8.4 165
Divide Peak 8730 13.5 9.8 138 15.6 12.1 129
Elk River 8739 16.0 9.0 178 15.0 10.4 144
Elkhead Divide 8800 18.0 -M * 18.2 -M *
Little Snake River 8928 20.6 13.4 154 24.6 18.8 131
Old Battle 9860 21.2 15.8 134 22.9 18.6 123
Sage Creek Basin 7850 11.8 6.8 174 12.3 7.7 160
Sandstone RS 8152 13.8 7.0 197 15.3 9.9 155
Whiskey Park 9020 21.6 13.4 161 20.5 16.4 125
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Basin Index (%) 158 137
UPPER GREEN RIVER
Big Sandy Opening 9080 8.8 7.0 126 8.6 7.1 121
Blind Bull Sum 8650 12.6 12.6 100 9.1 10.6 86
East Rim Divide 7930 6.2 5.6 111 6.2 6.6 94
Elkhart Park G.S. 9400 7.2 6.6 109 6.6 6.9 96
Gros Ventre Summit 8750 7.3 7.2 101 6.7 6.9 97
Gunsight Pass 9820 7.4 7.2 103 7.3 7.7 95
Indian Creek 9425 15.6 11.8 132 13.2 10.6 125
Kendall R.S. 7740 6.5 6.6 98 7.0 7.6 92
Larsen Creek 9000 6.0 4.0 150 8.4 6.7 125
Loomis Park 8240 8.4 8.1 104 8.6 9.4 91
New Fork Lake 8340 6.3 5.7 111 -M 6.2 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 7.3 6.6 111 8.5 7.6 112
Spring Creek Divide 9000 13.8 12.6 110 14.5 12.6 115
Triple Peak 8500 13.6 11.6 117 13.7 13.2 104
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Basin Index (%) 112 104
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.0 3.8 211 8.2 6.6 124
Buck Pasture 9632 11.2 -M * 12.7 -M *
EF Blacks Fork GS 9360 9.3 4.4 211 7.1 5.7 125
Hams Fork 7840 8.6 5.6 154 8.3 6.0 138
Henrys Fork 10182 -M -M * 8.4 -M *
Hewinta 9500 6.8 4.8 142 8.9 7.6 117
Hickerson Park 9122 5.5 3.4 162 6.3 5.6 112
Hole-in-Rock 9168 5.2 3.6 144 6.2 5.6 111
Indian Creek 9425 15.6 11.8 132 13.2 10.6 125
Kelley R.S. 8180 11.4 7.2 158 11.8 9.3 127
Spirit Lk 10235 11.0 5.9 186 10.7 8.7 123
Steel Creek Park 10158 11.2 7.0 160 11.1 8.7 128
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Basin Index (%) 161 123
UPPER BEAR RIVER
Bear River RS 8777 7.4 4.2 176 8.8 6.6 133
Bug Lake 7987 14.4 8.0 180 12.1 9.5 127
Burts Miller Ranch 8000 6.2 3.2 194 8.9 4.6 193
Chalk Creek #1 9171 17.0 10.9 156 17.4 12.4 140
Giveout 6930 7.4 4.5 164 8.6 6.6 130
Hayden Fork 9130 11.2 6.8 165 14.8 10.5 141
Kelley R.S. 8180 11.4 7.2 158 11.8 9.3 127
Lily Lake 9133 9.6 6.4 150 9.7 8.5 114
Monte Cristo 8932 20.6 12.6 163 19.7 13.2 149
Salt River Summit 7640 9.8 6.4 153 9.9 8.5 116
Spring Creek Divide 9000 13.8 12.6 110 14.5 12.6 115
Trial Lake 9992 19.5 10.2 191 19.8 11.6 171
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Basin Index (%) 159 137
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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.