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 16 , 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 9.7 103 10.9 12.0 91
Blind Bull Sum 8650 12.7 12.4 102 9.1 10.6 86
Cottonwood Creek 7670 13.0 10.6 123 14.0 13.0 108
East Rim Divide 7930 6.2 5.5 113 6.4 6.4 100
Grand Targhee 9260 24.9 22.8 109 15.6 17.6 89
Granite Creek 6770 9.1 8.2 111 8.5 11.0 77
Grassy Lake 7265 16.7 16.0 104 20.1 19.0 106
Gros Ventre Summit 8750 7.4 7.2 103 6.9 6.8 101
Gunsight Pass 9820 7.5 7.0 107 7.4 7.6 97
Lewis Lake Divide 7850 20.1 15.6 129 22.2 18.8 118
Loomis Park 8240 8.5 7.9 108 8.7 9.4 93
Phillips Bench 8200 15.4 13.2 117 16.2 14.8 109
Salt River Summit 7640 9.8 6.2 158 10.0 8.4 119
Snake River Station 6920 10.9 9.0 121 13.0 13.5 96
Somsen Ranch 6800 9.8 6.8 144 11.3 9.2 123
Spring Creek Divide 9000 13.9 12.3 113 14.5 12.5 116
Thumb Divide 7980 12.2 7.8 156 11.8 9.5 124
Togwotee Pass 9580 12.4 12.9 96 12.1 13.4 90
Triple Peak 8500 13.7 11.4 120 13.8 13.0 106
Two Ocean Plateau 9240 18.0 16.4 110 14.6 15.1 97
Willow Creek 8080 18.9 14.2 133 19.0 17.6 108
Younts Peak 8350 9.0 8.0 112 8.1 8.1 100
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Basin Index (%) 116 103
MADISON HEADWATERS IN WYOMING
Black Bear 8170 24.5 20.7 118 24.5 20.8 118
Canyon 7870 8.5 -M * 10.4 -M *
Madison Plateau 7750 17.1 11.8 145 17.9 13.6 132
West Yellowstone 6700 9.6 5.8 166 12.2 8.0 152
Whiskey Creek 6800 12.2 8.0 152 15.9 11.2 142
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Basin Index (%) 137 132
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 9.9 12.7 78 8.9 11.6 77
Canyon 7870 8.5 -M * 10.4 -M *
Evening Star 9200 14.2 14.8 96 16.6 16.4 101
Fisher Creek 9100 19.6 18.3 107 20.6 18.2 113
Monument Peak 8850 11.6 11.6 100 13.8 12.7 109
Northeast Entrance 7350 5.3 5.2 102 7.6 7.4 103
Parker Peak 9400 13.0 11.7 111 13.4 11.7 115
Sylvan Lake 8420 10.5 10.6 99 13.2 13.2 100
Thumb Divide 7980 12.2 7.8 156 11.8 9.5 124
Two Ocean Plateau 9240 18.0 16.4 110 14.6 15.1 97
White Mill 8700 13.8 13.9 99 13.7 13.4 102
Wolverine 7650 6.2 6.5 95 7.0 7.4 95
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Basin Index (%) 104 103
WIND RIVER
Burroughs Creek 8750 5.9 -M * 6.6 -M *
Castle Creek 8400 3.6 3.8 95 4.3 5.0 86
Cold Springs 9630 5.0 4.2 119 6.1 5.4 113
Deer Park 9700 14.1 7.0 201 14.3 8.9 161
Hobbs Park 10100 9.7 7.1 137 9.0 6.7 134
Kirwin 9550 5.3 6.2 85 7.0 7.1 99
Little Warm 9370 5.9 5.4 109 6.8 7.2 94
South Pass 9040 11.0 6.8 162 10.8 8.2 132
St. Lawrence Alt 8620 4.3 -M * 6.1 -M *
Togwotee Pass 9580 12.4 12.9 96 12.1 13.4 90
Townsend Creek 8700 6.8 4.4 155 7.7 6.1 126
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Basin Index (%) 128 115
BIGHORN BASIN
Bald Mtn. 9380 8.7 10.2 85 7.4 8.8 84
Bear Trap Meadow 8200 4.7 3.4 138 5.5 4.7 117
Bone Springs Div 9350 6.0 9.0 67 5.9 8.4 70
Grave Springs 8550 5.9 4.0 148 6.4 5.0 128
Kirwin 9550 5.3 6.2 85 7.0 7.1 99
Marquette 8760 3.8 3.8 100 4.6 5.4 85
Middle Powder 7760 6.6 5.1 129 5.9 5.4 109
Owl Creek 8975 4.3 3.0 143 5.0 3.5 143
Powder River Pass 9480 5.0 6.2 81 6.6 7.3 90
Shell Creek 9580 6.0 8.3 72 6.8 7.7 88
Timber Creek 7950 2.8 2.6 108 3.4 4.4 77
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Basin Index (%) 96 95
SHOSHONE RIVER
Blackwater 9780 11.8 13.2 89 11.8 12.6 94
Evening Star 9200 14.2 14.8 96 16.6 16.4 101
Marquette 8760 3.8 3.8 100 4.6 5.4 85
Sylvan Lake 8420 10.5 10.6 99 13.2 13.2 100
Sylvan Road 7120 5.7 6.8 84 8.2 10.4 79
Younts Peak 8350 9.0 8.0 112 8.1 8.1 100
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Basin Index (%) 96 95
POWDER RIVER
Bear Trap Meadow 8200 4.7 3.4 138 5.5 4.7 117
Cloud Peak Reservoir 9860 6.9 7.3 95 7.0 7.4 95
Grave Springs 8550 5.9 4.0 148 6.4 5.0 128
Hansen Sawmill 8360 3.9 3.8 103 4.2 4.8 88
Middle Powder 7760 6.6 5.1 129 5.9 5.4 109
Powder River Pass 9480 5.0 6.2 81 6.6 7.3 90
Soldier Park 8720 2.2 3.2 69 3.7 5.0 74
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Basin Index (%) 107 99
TONGUE RIVER
Big Goose 7990 4.5 4.0 112 5.2 5.4 96
Bone Springs Div 9350 6.0 9.0 67 5.9 8.4 70
Burgess Junction 7880 6.0 5.4 111 7.4 6.6 112
Dome Lake 8880 4.1 5.9 69 5.8 6.8 85
Little Goose 8870 4.8 4.8 100 5.8 6.2 94
Sucker Creek 8880 6.2 6.4 97 8.2 7.3 112
Tie Creek 6870 3.5 2.8 125 6.2 5.8 107
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Basin Index (%) 92 96
BELLE FOURCHE
Blind Park 6890 3.8 3.8 100 5.3 5.5 96
Cole Canyon 5910 3.4 2.8 121 4.5 4.8 94
North Rapid Creek 6130 3.8 3.7 103 4.4 4.4 100
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Basin Index (%) 107 97
CHEYENNE RIVER BASIN
Blind Park 6890 3.8 3.8 100 5.3 5.5 96
North Rapid Creek 6130 3.8 3.7 103 4.4 4.4 100
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Basin Index (%) 101 98
UPPER N. PLATTE
Arapaho Ridge 10976 14.2 11.4 125 14.2 12.2 116
Blackhall Mtn 9839 18.9 13.9 136 19.5 15.9 123
Cinnabar Park 9707 -M 11.6 * 12.0 13.3 90
Columbine 9167 15.4 11.8 131 15.4 12.9 119
Divide Peak 8730 13.4 9.8 137 15.5 12.0 129
Joe Wright 10158 13.1 9.8 134 15.9 13.2 120
Laprele Creek 8390 5.6 4.5 124 5.8 6.2 94
Med Bow 10512 19.0 -M * 17.9 -M *
Never Summer 10323 14.2 10.2 139 10.1 9.5 106
North French Creek 10153 15.3 14.3 107 15.3 14.5 106
Old Battle 9860 21.1 15.6 135 22.8 18.2 125
Rawah 9069 8.8 6.1 144 9.9 9.0 110
Sage Creek Basin 7850 11.7 6.9 170 12.2 7.7 158
Sand Lake 10098 13.7 13.8 99 13.7 12.4 110
South Brush Creek 8495 8.4 6.1 138 7.9 7.7 103
Tower 10620 29.1 21.0 139 28.0 21.4 131
Webber Springs 9260 14.8 11.0 135 16.3 14.1 116
Whiskey Park 9020 21.4 12.8 167 20.4 15.6 131
Willow Creek Pass 9523 9.4 6.8 138 10.0 7.1 141
Zirkel 9338 15.5 14.8 105 18.1 16.8 108
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Basin Index (%) 132 118
SWEETWATER
Deer Park 9700 14.1 7.0 201 14.3 8.9 161
Larsen Creek 9000 6.0 4.0 150 8.5 6.6 129
South Pass 9040 11.0 6.8 162 10.8 8.2 132
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Basin Index (%) 175 142
LOWER N. PLATTE
Casper Mtn. 7920 6.8 6.0 113 7.0 7.4 95
Laprele Creek 8390 5.6 4.5 124 5.8 6.2 94
Reno Hill 8430 7.5 6.7 112 8.8 7.6 116
Windy Peak 7915 4.6 3.6 128 5.5 5.5 100
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Basin Index (%) 118 101
LARAMIE RIVER
Brooklyn Lake 10250 12.1 10.9 111 12.9 11.2 115
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 9.2 99
Rawah 9069 8.8 6.1 144 9.9 9.0 110
Roach 9740 10.0 8.3 120 11.6 10.3 113
Windy Peak 7915 4.6 3.6 128 5.5 5.5 100
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Basin Index (%) 112 102
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 10.4 5.6 186 13.8 8.2 168
Divide Peak 8730 13.4 9.8 137 15.5 12.0 129
Elk River 8739 15.9 8.6 185 14.9 10.2 146
Elkhead Divide 8800 17.9 -M * 18.2 -M *
Little Snake River 8928 20.4 13.4 152 24.4 18.6 131
Old Battle 9860 21.1 15.6 135 22.8 18.2 125
Sage Creek Basin 7850 11.7 6.9 170 12.2 7.7 158
Sandstone RS 8152 13.6 6.7 203 15.1 9.6 157
Whiskey Park 9020 21.4 12.8 167 20.4 15.6 131
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Basin Index (%) 161 139
UPPER GREEN RIVER
Big Sandy Opening 9080 8.9 7.0 127 8.8 7.0 126
Blind Bull Sum 8650 12.7 12.4 102 9.1 10.6 86
East Rim Divide 7930 6.2 5.5 113 6.4 6.4 100
Elkhart Park G.S. 9400 7.2 6.6 109 6.6 6.9 96
Gros Ventre Summit 8750 7.4 7.2 103 6.9 6.8 101
Gunsight Pass 9820 7.5 7.0 107 7.4 7.6 97
Indian Creek 9425 15.6 11.7 133 13.3 10.6 125
Kendall R.S. 7740 6.7 6.6 102 7.0 7.5 93
Larsen Creek 9000 6.0 4.0 150 8.5 6.6 129
Loomis Park 8240 8.5 7.9 108 8.7 9.4 93
New Fork Lake 8340 6.4 5.7 112 -M 6.1 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 7.4 6.4 116 8.6 7.4 116
Spring Creek Divide 9000 13.9 12.3 113 14.5 12.5 116
Triple Peak 8500 13.7 11.4 120 13.8 13.0 106
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Basin Index (%) 115 107
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.0 3.8 211 8.2 6.6 124
Buck Pasture 9632 11.0 -M * 12.6 -M *
EF Blacks Fork GS 9360 9.3 4.4 211 7.0 5.6 125
Hams Fork 7840 8.7 5.6 155 8.3 5.9 141
Henrys Fork 10182 -M -M * 8.5 -M *
Hewinta 9500 6.8 4.8 142 8.9 7.4 120
Hickerson Park 9122 5.4 3.3 164 6.2 5.4 115
Hole-in-Rock 9168 5.1 3.6 142 6.1 5.6 109
Indian Creek 9425 15.6 11.7 133 13.3 10.6 125
Kelley R.S. 8180 11.5 7.2 160 11.9 9.1 131
Spirit Lk 10235 10.8 5.8 186 10.6 8.6 123
Steel Creek Park 10158 11.2 7.0 160 11.1 8.7 128
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Basin Index (%) 162 125
UPPER BEAR RIVER
Bear River RS 8777 7.4 4.2 176 8.8 6.6 133
Bug Lake 7987 14.3 8.0 179 12.1 9.5 127
Burts Miller Ranch 8000 5.8 3.2 181 8.9 4.5 198
Chalk Creek #1 9171 16.9 10.9 155 17.3 12.1 143
Giveout 6930 7.4 4.4 168 8.6 6.6 130
Hayden Fork 9130 11.0 6.8 162 14.6 10.4 140
Kelley R.S. 8180 11.5 7.2 160 11.9 9.1 131
Lily Lake 9133 9.6 6.4 150 9.7 8.4 115
Monte Cristo 8932 20.3 12.4 164 19.6 13.2 148
Salt River Summit 7640 9.8 6.2 158 10.0 8.4 119
Spring Creek Divide 9000 13.9 12.3 113 14.5 12.5 116
Trial Lake 9992 19.2 10.0 192 19.6 11.4 172
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Basin Index (%) 160 138
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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.
