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 10 , 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 9.0 8.6 105 9.9 11.1 89
Blind Bull Sum 8650 11.7 11.0 106 8.1 9.3 87
Cottonwood Creek 7670 11.1 9.2 121 12.0 11.8 102
East Rim Divide 7930 5.7 5.0 114 5.8 5.8 100
Grand Targhee 9260 22.3 22.1 101 13.9 17.0 82
Granite Creek 6770 8.2 7.5 109 7.6 10.0 76
Grassy Lake 7265 15.6 14.2 110 19.0 17.8 107
Gros Ventre Summit 8750 6.8 6.9 99 6.6 6.8 97
Gunsight Pass 9820 6.7 6.7 100 6.7 7.3 92
Lewis Lake Divide 7850 18.9 14.6 129 21.1 17.4 121
Loomis Park 8240 7.9 7.0 113 8.1 8.6 94
Phillips Bench 8200 14.3 11.8 121 15.1 13.4 113
Salt River Summit 7640 8.4 5.6 150 8.5 7.6 112
Snake River Station 6920 10.1 7.7 131 12.2 11.9 103
Somsen Ranch 6800 8.6 5.6 154 10.2 8.8 116
Spring Creek Divide 9000 12.4 11.0 113 12.9 11.6 111
Thumb Divide 7980 11.5 7.2 160 11.0 9.0 122
Togwotee Pass 9580 11.7 12.0 98 11.5 12.4 93
Triple Peak 8500 12.7 9.8 130 12.8 12.0 107
Two Ocean Plateau 9240 17.1 15.1 113 13.7 14.3 96
Willow Creek 8080 16.4 12.8 128 16.6 16.2 102
Younts Peak 8350 8.6 7.2 119 7.8 7.7 101
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Basin Index (%) 117 101
MADISON HEADWATERS IN WYOMING
Black Bear 8170 22.7 18.9 120 22.8 20.0 114
Canyon 7870 8.0 -M * 9.8 -M *
Madison Plateau 7750 15.7 11.0 143 16.7 13.0 128
West Yellowstone 6700 8.7 5.4 161 11.3 7.8 145
Whiskey Creek 6800 11.0 7.0 157 14.7 10.8 136
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Basin Index (%) 137 127
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 9.6 11.5 83 8.7 10.8 81
Canyon 7870 8.0 -M * 9.8 -M *
Evening Star 9200 13.6 13.6 100 16.0 16.0 100
Fisher Creek 9100 18.9 16.9 112 20.0 17.4 115
Monument Peak 8850 11.2 10.4 108 13.4 12.0 112
Northeast Entrance 7350 5.2 4.8 108 7.4 7.0 106
Parker Peak 9400 12.4 11.2 111 12.9 11.0 117
Sylvan Lake 8420 9.8 10.0 98 12.5 12.9 97
Thumb Divide 7980 11.5 7.2 160 11.0 9.0 122
Two Ocean Plateau 9240 17.1 15.1 113 13.7 14.3 96
White Mill 8700 13.2 12.2 108 13.2 12.6 105
Wolverine 7650 6.2 6.0 103 6.9 7.0 99
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Basin Index (%) 108 104
WIND RIVER
Burroughs Creek 8750 5.7 -M * 6.3 -M *
Castle Creek 8400 3.4 3.6 94 4.0 4.8 83
Cold Springs 9630 4.7 4.0 118 5.9 5.2 113
Deer Park 9700 13.2 6.6 200 13.4 8.7 154
Hobbs Park 10100 9.1 6.9 132 8.5 6.5 131
Kirwin 9550 5.0 5.9 85 6.7 6.5 103
Little Warm 9370 5.5 5.1 108 6.5 6.4 102
South Pass 9040 10.2 6.6 155 10.0 7.6 132
St. Lawrence Alt 8620 4.0 -M * 5.9 -M *
Togwotee Pass 9580 11.7 12.0 98 11.5 12.4 93
Townsend Creek 8700 6.2 4.4 141 7.1 6.0 118
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Basin Index (%) 125 115
BIGHORN BASIN
Bald Mtn. 9380 8.6 9.6 90 7.3 8.2 89
Bear Trap Meadow 8200 4.5 3.3 136 5.3 4.7 113
Bone Springs Div 9350 5.8 8.1 72 5.8 7.9 73
Grave Springs 8550 5.3 3.8 139 5.7 4.8 119
Kirwin 9550 5.0 5.9 85 6.7 6.5 103
Marquette 8760 3.6 3.8 95 4.5 5.1 88
Middle Powder 7760 6.3 4.8 131 5.6 5.4 104
Owl Creek 8975 4.0 2.8 143 4.6 3.4 135
Powder River Pass 9480 5.0 5.8 86 6.5 7.0 93
Shell Creek 9580 6.0 7.8 77 6.7 7.3 92
Timber Creek 7950 2.6 2.5 104 3.1 4.2 74
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Basin Index (%) 97 96
SHOSHONE RIVER
Blackwater 9780 11.4 12.3 93 11.3 12.0 94
Evening Star 9200 13.6 13.6 100 16.0 16.0 100
Marquette 8760 3.6 3.8 95 4.5 5.1 88
Sylvan Lake 8420 9.8 10.0 98 12.5 12.9 97
Sylvan Road 7120 5.4 6.2 87 7.9 10.2 77
Younts Peak 8350 8.6 7.2 119 7.8 7.7 101
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Basin Index (%) 99 94
POWDER RIVER
Bear Trap Meadow 8200 4.5 3.3 136 5.3 4.7 113
Cloud Peak Reservoir 9860 6.9 7.0 99 7.0 6.8 103
Grave Springs 8550 5.3 3.8 139 5.7 4.8 119
Hansen Sawmill 8360 3.9 3.5 111 4.2 4.4 95
Middle Powder 7760 6.3 4.8 131 5.6 5.4 104
Powder River Pass 9480 5.0 5.8 86 6.5 7.0 93
Soldier Park 8720 2.3 2.9 79 3.6 4.8 75
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Basin Index (%) 110 100
TONGUE RIVER
Big Goose 7990 4.5 3.8 118 5.2 5.3 98
Bone Springs Div 9350 5.8 8.1 72 5.8 7.9 73
Burgess Junction 7880 6.0 5.1 118 7.5 6.3 119
Dome Lake 8880 4.1 5.4 76 5.8 6.6 88
Little Goose 8870 4.8 4.7 102 5.8 6.0 97
Sucker Creek 8880 6.1 6.0 102 8.2 6.8 121
Tie Creek 6870 3.5 2.4 146 6.2 5.6 111
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Basin Index (%) 98 100
BELLE FOURCHE
Blind Park 6890 3.6 3.6 100 5.1 5.4 94
Cole Canyon 5910 3.2 2.8 114 4.3 4.4 98
North Rapid Creek 6130 3.8 3.6 106 4.4 4.2 105
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Basin Index (%) 106 99
CHEYENNE RIVER BASIN
Blind Park 6890 3.6 3.6 100 5.1 5.4 94
North Rapid Creek 6130 3.8 3.6 106 4.4 4.2 105
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Basin Index (%) 103 99
UPPER N. PLATTE
Arapaho Ridge 10976 12.6 11.2 112 12.6 11.5 110
Blackhall Mtn 9839 16.7 13.2 127 17.5 15.6 112
Cinnabar Park 9707 -M 10.6 * 11.1 12.9 86
Columbine 9167 13.1 10.4 126 13.5 11.4 118
Divide Peak 8730 11.5 9.2 125 13.7 11.4 120
Joe Wright 10158 12.1 9.6 126 14.7 12.6 117
Laprele Creek 8390 4.7 4.3 109 5.0 5.8 86
Med Bow 10512 17.1 -M * 16.5 -M *
Never Summer 10323 13.0 9.6 135 9.3 9.0 103
North French Creek 10153 13.5 13.0 104 13.6 13.4 101
Old Battle 9860 17.4 14.8 118 19.2 17.0 113
Rawah 9069 8.3 5.6 148 9.5 8.4 113
Sage Creek Basin 7850 10.6 6.4 166 11.2 7.2 156
Sand Lake 10098 12.3 12.9 95 12.3 11.8 104
South Brush Creek 8495 7.8 5.5 142 7.3 7.0 104
Tower 10620 24.6 19.0 129 24.4 19.8 123
Webber Springs 9260 12.5 10.6 118 13.8 13.2 105
Whiskey Park 9020 18.6 11.4 163 18.1 14.6 124
Willow Creek Pass 9523 8.5 6.4 133 9.2 6.9 133
Zirkel 9338 13.4 13.1 102 15.9 15.8 101
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Basin Index (%) 124 112
SWEETWATER
Deer Park 9700 13.2 6.6 200 13.4 8.7 154
Larsen Creek 9000 5.1 3.7 138 7.5 6.4 117
South Pass 9040 10.2 6.6 155 10.0 7.6 132
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Basin Index (%) 169 136
LOWER N. PLATTE
Casper Mtn. 7920 5.5 5.8 95 5.6 7.0 80
Laprele Creek 8390 4.7 4.3 109 5.0 5.8 86
Reno Hill 8430 6.7 6.5 103 8.1 7.3 111
Windy Peak 7915 3.8 3.3 115 4.8 5.2 92
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Basin Index (%) 104 93
LARAMIE RIVER
Brooklyn Lake 10250 10.9 10.0 109 11.8 10.6 111
Cinnabar Park 9707 -M 10.6 * 11.1 12.9 86
Crow Creek 8335 2.3 4.1 56 4.4 5.9 75
Deadman Hill 10239 9.0 8.8 102 8.4 8.8 95
Rawah 9069 8.3 5.6 148 9.5 8.4 113
Roach 9740 9.0 7.8 115 10.4 9.6 108
Windy Peak 7915 3.8 3.3 115 4.8 5.2 92
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Basin Index (%) 109 98
S. PLATTE
Crow Creek 8335 2.3 4.1 56 4.4 5.9 75
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Basin Index (%) 56 75
LITTLE SNAKE RIVER
Battle Mountain 7498 9.6 5.2 185 12.7 7.8 163
Divide Peak 8730 11.5 9.2 125 13.7 11.4 120
Elk River 8739 14.0 8.0 175 13.0 9.8 133
Elkhead Divide 8800 15.7 -M * 16.2 -M *
Little Snake River 8928 17.1 12.3 139 21.0 17.3 121
Old Battle 9860 17.4 14.8 118 19.2 17.0 113
Sage Creek Basin 7850 10.6 6.4 166 11.2 7.2 156
Sandstone RS 8152 11.8 5.7 207 13.6 8.8 155
Whiskey Park 9020 18.6 11.4 163 18.1 14.6 124
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Basin Index (%) 152 130
UPPER GREEN RIVER
Big Sandy Opening 9080 7.8 6.8 115 7.7 6.8 113
Blind Bull Sum 8650 11.7 11.0 106 8.1 9.3 87
East Rim Divide 7930 5.7 5.0 114 5.8 5.8 100
Elkhart Park G.S. 9400 6.3 6.0 105 5.7 6.6 86
Gros Ventre Summit 8750 6.8 6.9 99 6.6 6.8 97
Gunsight Pass 9820 6.7 6.7 100 6.7 7.3 92
Indian Creek 9425 13.6 10.6 128 11.6 9.7 120
Kendall R.S. 7740 6.1 5.6 109 6.5 7.0 93
Larsen Creek 9000 5.1 3.7 138 7.5 6.4 117
Loomis Park 8240 7.9 7.0 113 8.1 8.6 94
New Fork Lake 8340 5.8 5.2 112 -M 5.8 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 6.5 6.0 108 7.7 6.8 113
Spring Creek Divide 9000 12.4 11.0 113 12.9 11.6 111
Triple Peak 8500 12.7 9.8 130 12.8 12.0 107
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Basin Index (%) 114 103
LOWER GREEN RIVER
Blacks Fork Jct 8869 7.5 3.8 197 7.6 6.2 123
Buck Pasture 9632 10.2 -M * 11.4 -M *
EF Blacks Fork GS 9360 8.9 4.2 212 6.6 5.4 122
Hams Fork 7840 7.1 5.2 137 6.8 5.8 117
Henrys Fork 10182 -M -M * 7.6 -M *
Hewinta 9500 6.3 4.4 143 8.4 7.0 120
Hickerson Park 9122 5.2 3.2 162 6.0 5.2 115
Hole-in-Rock 9168 4.6 3.3 139 6.0 5.5 109
Indian Creek 9425 13.6 10.6 128 11.6 9.7 120
Kelley R.S. 8180 9.8 6.6 148 10.2 8.8 116
Spirit Lk 10235 9.6 5.7 168 9.6 8.3 116
Steel Creek Park 10158 10.4 6.6 158 10.3 8.2 126
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Basin Index (%) 155 119
UPPER BEAR RIVER
Bear River RS 8777 6.9 4.0 172 8.2 6.0 137
Bug Lake 7987 12.7 7.2 176 10.7 9.0 119
Burts Miller Ranch 8000 5.8 3.1 187 8.6 4.2 205
Chalk Creek #1 9171 14.9 9.9 151 15.4 11.3 136
Giveout 6930 6.0 4.1 146 7.3 6.4 114
Hayden Fork 9130 9.4 6.2 152 13.0 10.0 130
Kelley R.S. 8180 9.8 6.6 148 10.2 8.8 116
Lily Lake 9133 8.8 5.6 157 8.9 8.0 111
Monte Cristo 8932 17.7 10.9 162 17.2 12.4 139
Salt River Summit 7640 8.4 5.6 150 8.5 7.6 112
Spring Creek Divide 9000 12.4 11.0 113 12.9 11.6 111
Trial Lake 9992 16.6 9.2 180 17.2 10.6 162
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Basin Index (%) 155 130
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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.
