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 30 , 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 10.3 11.4 90 11.7 13.6 86
Blind Bull Sum 8650 13.6 14.7 93 9.9 11.6 85
Cottonwood Creek 7670 14.8 13.0 114 15.8 15.2 104
East Rim Divide 7930 7.3 6.8 107 6.8 7.2 94
Grand Targhee 9260 28.5 26.4 108 17.5 20.4 86
Granite Creek 6770 10.2 10.3 99 9.0 12.4 73
Grassy Lake 7265 18.3 19.6 93 22.0 23.0 96
Gros Ventre Summit 8750 7.1 8.0 89 7.0 7.8 90
Gunsight Pass 9820 8.2 8.1 101 7.8 8.8 89
Lewis Lake Divide 7850 21.1 19.0 111 22.9 21.6 106
Loomis Park 8240 9.3 9.6 97 9.6 10.6 91
Phillips Bench 8200 17.1 16.0 107 17.8 17.0 105
Salt River Summit 7640 11.0 7.6 145 10.8 9.6 112
Snake River Station 6920 11.5 11.1 104 13.5 15.0 90
Somsen Ranch 6800 11.3 8.1 140 12.8 10.8 119
Spring Creek Divide 9000 15.3 14.9 103 15.7 14.7 107
Thumb Divide 7980 12.5 9.8 128 11.8 11.5 103
Togwotee Pass 9580 14.0 14.4 97 13.5 15.4 88
Triple Peak 8500 14.3 13.8 104 -M 15.6 *
Two Ocean Plateau 9240 18.8 18.2 103 15.0 16.3 92
Willow Creek 8080 -M 16.8 * -M 20.4 *
Younts Peak 8350 9.4 8.8 107 8.4 9.2 91
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Basin Index (%) 105 95
MADISON HEADWATERS IN WYOMING
Black Bear 8170 26.0 22.4 116 25.6 23.0 111
Canyon 7870 8.6 -M * 10.4 -M *
Madison Plateau 7750 17.8 13.8 129 18.4 15.2 121
West Yellowstone 6700 10.0 6.9 145 12.7 9.2 138
Whiskey Creek 6800 12.4 9.1 136 14.6 12.2 120
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Basin Index (%) 127 120
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 10.6 14.2 75 9.2 12.6 73
Canyon 7870 8.6 -M * 10.4 -M *
Evening Star 9200 15.5 17.0 91 17.4 18.3 95
Fisher Creek 9100 20.8 21.0 99 21.5 20.4 105
Monument Peak 8850 12.4 13.1 95 14.7 14.1 104
Northeast Entrance 7350 5.8 6.3 92 8.3 8.3 100
Parker Peak 9400 14.1 13.3 106 14.2 12.8 111
Sylvan Lake 8420 12.1 12.2 99 14.6 14.8 99
Thumb Divide 7980 12.5 9.8 128 11.8 11.5 103
Two Ocean Plateau 9240 18.8 18.2 103 15.0 16.3 92
White Mill 8700 14.9 14.8 101 14.1 14.8 95
Wolverine 7650 7.4 8.0 92 7.7 8.4 92
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Basin Index (%) 98 98
WIND RIVER
Burroughs Creek 8750 6.6 -M * 7.4 -M *
Castle Creek 8400 4.2 4.4 95 4.5 5.9 76
Cold Springs 9630 5.4 4.8 112 6.6 5.8 114
Deer Park 9700 14.8 8.0 185 14.7 10.1 146
Hobbs Park 10100 10.0 7.8 128 9.2 7.2 128
Kirwin 9550 5.8 6.6 88 7.5 7.6 99
Little Warm 9370 6.4 6.2 103 7.1 7.8 91
South Pass 9040 11.7 8.0 146 10.8 9.2 117
St. Lawrence Alt 8620 4.7 -M * 6.2 -M *
Togwotee Pass 9580 14.0 14.4 97 13.5 15.4 88
Townsend Creek 8700 7.2 5.2 138 8.2 6.5 126
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Basin Index (%) 122 109
BIGHORN BASIN
Bald Mtn. 9380 11.4 11.0 104 9.3 9.6 97
Bear Trap Meadow 8200 5.3 3.8 139 5.5 5.2 106
Bone Springs Div 9350 -M 9.8 * 6.7 9.1 74
Grave Springs 8550 6.5 4.7 138 7.1 5.6 127
Kirwin 9550 5.8 6.6 88 7.5 7.6 99
Marquette 8760 4.8 4.2 114 4.9 5.6 88
Middle Powder 7760 7.1 6.0 118 6.1 6.0 102
Owl Creek 8975 4.6 3.3 139 4.8 3.8 126
Powder River Pass 9480 6.4 6.6 97 7.7 8.1 95
Shell Creek 9580 7.5 9.1 82 8.1 8.5 95
Timber Creek 7950 3.6 2.8 129 3.6 4.7 77
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Basin Index (%) 108 97
SHOSHONE RIVER
Blackwater 9780 12.1 14.4 84 11.8 14.0 84
Evening Star 9200 15.5 17.0 91 17.4 18.3 95
Marquette 8760 4.8 4.2 114 4.9 5.6 88
Sylvan Lake 8420 12.1 12.2 99 14.6 14.8 99
Sylvan Road 7120 6.3 7.9 80 9.4 11.4 82
Younts Peak 8350 9.4 8.8 107 8.4 9.2 91
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Basin Index (%) 93 91
POWDER RIVER
Bear Trap Meadow 8200 5.3 3.8 139 5.5 5.2 106
Cloud Peak Reservoir 9860 -M 8.4 * 8.6 8.1 106
Grave Springs 8550 6.5 4.7 138 7.1 5.6 127
Hansen Sawmill 8360 4.5 4.2 107 4.8 5.2 92
Middle Powder 7760 7.1 6.0 118 6.1 6.0 102
Powder River Pass 9480 6.4 6.6 97 7.7 8.1 95
Soldier Park 8720 2.4 3.6 67 3.8 5.6 68
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Basin Index (%) 111 100
TONGUE RIVER
Big Goose 7990 5.5 4.8 115 6.6 5.8 114
Bone Springs Div 9350 -M 9.8 * 6.7 9.1 74
Burgess Junction 7880 7.7 6.4 120 9.1 7.4 123
Dome Lake 8880 5.0 6.6 76 7.2 7.5 96
Little Goose 8870 6.4 5.7 112 7.5 6.9 109
Sucker Creek 8880 8.4 7.3 115 10.3 8.2 126
Tie Creek 6870 5.6 3.4 165 8.5 6.4 133
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Basin Index (%) 113 109
BELLE FOURCHE
Blind Park 6890 5.4 4.6 117 6.0 6.4 94
Cole Canyon 5910 4.2 3.2 131 4.5 5.4 83
North Rapid Creek 6130 4.2 4.4 95 4.1 5.0 82
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Basin Index (%) 113 87
CHEYENNE RIVER BASIN
Blind Park 6890 5.4 4.6 117 6.0 6.4 94
North Rapid Creek 6130 4.2 4.4 95 4.1 5.0 82
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Basin Index (%) 107 89
UPPER N. PLATTE
Arapaho Ridge 10976 16.6 13.8 120 16.4 13.8 119
Blackhall Mtn 9839 23.6 17.6 134 23.8 18.4 129
Cinnabar Park 9707 -M 12.8 * 15.3 15.2 101
Columbine 9167 18.8 13.8 136 17.8 14.8 120
Divide Peak 8730 16.8 11.9 141 18.4 13.6 135
Joe Wright 10158 15.9 11.5 138 18.2 15.0 121
Laprele Creek 8390 7.6 5.2 146 7.9 6.8 116
Med Bow 10512 24.9 -M * 22.2 -M *
Never Summer 10323 16.8 11.0 153 11.9 10.3 116
North French Creek 10153 19.6 16.4 120 19.4 16.2 120
Old Battle 9860 25.1 18.6 135 25.6 21.6 119
Rawah 9069 10.4 6.6 158 11.6 9.6 121
Sage Creek Basin 7850 14.7 9.0 163 14.1 8.5 166
Sand Lake 10098 17.4 16.0 109 17.4 15.0 116
South Brush Creek 8495 10.4 7.0 149 9.8 8.5 115
Tower 10620 35.6 25.4 140 30.6 25.3 121
Webber Springs 9260 17.8 12.8 139 19.4 16.0 121
Whiskey Park 9020 26.1 15.9 164 24.3 17.8 137
Willow Creek Pass 9523 11.2 7.7 145 11.6 8.3 140
Zirkel 9338 19.9 16.7 119 22.1 19.1 116
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Basin Index (%) 137 123
SWEETWATER
Deer Park 9700 14.8 8.0 185 14.7 10.1 146
Larsen Creek 9000 6.5 4.9 133 8.8 7.8 113
South Pass 9040 11.7 8.0 146 10.8 9.2 117
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Basin Index (%) 158 127
LOWER N. PLATTE
Casper Mtn. 7920 9.0 7.2 125 8.8 8.4 105
Laprele Creek 8390 7.6 5.2 146 7.9 6.8 116
Reno Hill 8430 9.5 8.0 119 11.0 8.4 131
Windy Peak 7915 -M 4.4 * -M 6.2 *
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Basin Index (%) 128 117
LARAMIE RIVER
Brooklyn Lake 10250 15.5 12.4 125 16.2 13.0 125
Cinnabar Park 9707 -M 12.8 * 15.3 15.2 101
Crow Creek 8335 3.8 5.0 76 5.6 6.5 86
Deadman Hill 10239 11.9 10.6 112 11.0 10.4 106
Rawah 9069 10.4 6.6 158 11.6 9.6 121
Roach 9740 12.4 9.6 129 13.9 11.5 121
Windy Peak 7915 -M 4.4 * -M 6.2 *
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Basin Index (%) 122 111
S. PLATTE
Crow Creek 8335 3.8 5.0 76 5.6 6.5 86
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Basin Index (%) 76 86
LITTLE SNAKE RIVER
Battle Mountain 7498 12.3 7.0 176 16.0 9.8 163
Divide Peak 8730 16.8 11.9 141 18.4 13.6 135
Elk River 8739 18.7 10.8 173 17.2 11.7 147
Elkhead Divide 8800 21.0 -M * 21.0 -M *
Little Snake River 8928 24.8 15.8 157 27.8 22.0 126
Old Battle 9860 25.1 18.6 135 25.6 21.6 119
Sage Creek Basin 7850 14.7 9.0 163 14.1 8.5 166
Sandstone RS 8152 16.1 8.0 201 17.5 11.3 155
Whiskey Park 9020 26.1 15.9 164 24.3 17.8 137
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Basin Index (%) 159 138
UPPER GREEN RIVER
Big Sandy Opening 9080 9.1 8.0 114 8.9 7.9 113
Blind Bull Sum 8650 13.6 14.7 93 9.9 11.6 85
East Rim Divide 7930 7.3 6.8 107 6.8 7.2 94
Elkhart Park G.S. 9400 7.7 7.5 103 6.7 7.8 86
Gros Ventre Summit 8750 7.1 8.0 89 7.0 7.8 90
Gunsight Pass 9820 8.2 8.1 101 7.8 8.8 89
Indian Creek 9425 17.1 13.6 126 14.5 12.6 115
Kendall R.S. 7740 7.1 7.5 95 7.6 8.8 86
Larsen Creek 9000 6.5 4.9 133 8.8 7.8 113
Loomis Park 8240 9.3 9.6 97 9.6 10.6 91
New Fork Lake 8340 6.9 6.8 101 -M 6.7 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 8.1 8.0 101 9.2 8.7 106
Spring Creek Divide 9000 15.3 14.9 103 15.7 14.7 107
Triple Peak 8500 14.3 13.8 104 -M 15.6 *
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Basin Index (%) 104 98
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.6 5.0 172 8.8 7.6 116
Buck Pasture 9632 12.1 -M * 13.8 -M *
EF Blacks Fork GS 9360 9.4 6.1 154 7.2 6.6 109
Hams Fork 7840 9.4 7.0 134 9.0 7.0 129
Henrys Fork 10182 -M -M * 9.5 -M *
Hewinta 9500 7.7 5.3 145 9.8 8.6 114
Hickerson Park 9122 6.3 4.0 158 7.0 6.4 109
Hole-in-Rock 9168 5.7 4.1 139 6.6 6.2 106
Indian Creek 9425 17.1 13.6 126 14.5 12.6 115
Kelley R.S. 8180 12.3 8.8 140 13.0 10.8 120
Spirit Lk 10235 12.0 6.5 185 11.8 9.7 122
Steel Creek Park 10158 12.3 8.6 143 12.2 9.6 127
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Basin Index (%) 146 117
UPPER BEAR RIVER
Bear River RS 8777 8.1 5.4 150 9.6 7.4 130
Bug Lake 7987 16.5 9.8 168 13.7 11.2 122
Burts Miller Ranch 8000 6.1 3.8 161 9.5 5.1 186
Chalk Creek #1 9171 18.4 12.0 153 17.7 14.3 124
Giveout 6930 7.9 5.8 136 9.2 7.5 123
Hayden Fork 9130 12.2 8.4 145 16.1 12.4 130
Kelley R.S. 8180 12.3 8.8 140 13.0 10.8 120
Lily Lake 9133 10.9 7.4 147 10.9 9.4 116
Monte Cristo 8932 23.0 14.4 160 21.4 15.8 135
Salt River Summit 7640 11.0 7.6 145 10.8 9.6 112
Spring Creek Divide 9000 15.3 14.9 103 15.7 14.7 107
Trial Lake 9992 21.2 12.2 174 21.0 13.9 151
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Basin Index (%) 147 128
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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.
