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 SUNDAY: JANUARY 15 , 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 9.7 9.6 101 10.6 12.0 88
Blind Bull Sum 8650 12.4 12.4 100 8.9 10.5 85
Cottonwood Creek 7670 12.4 10.4 119 13.4 12.8 105
East Rim Divide 7930 6.0 5.4 111 6.2 6.4 97
Grand Targhee 9260 24.1 22.7 106 15.0 17.6 85
Granite Creek 6770 8.9 8.2 109 8.3 11.0 75
Grassy Lake 7265 16.5 15.8 104 19.9 19.0 105
Gros Ventre Summit 8750 7.4 7.2 103 6.9 6.8 101
Gunsight Pass 9820 7.3 7.0 104 7.2 7.5 96
Lewis Lake Divide 7850 20.0 15.6 128 22.1 18.6 119
Loomis Park 8240 8.3 7.8 106 8.5 9.2 92
Phillips Bench 8200 15.2 13.2 115 16.0 14.4 111
Salt River Summit 7640 9.5 6.2 153 9.7 8.4 115
Snake River Station 6920 10.8 9.0 120 12.8 12.9 99
Somsen Ranch 6800 9.2 6.7 137 10.9 9.2 118
Spring Creek Divide 9000 13.7 11.8 116 14.3 12.5 114
Thumb Divide 7980 12.0 7.8 154 11.6 9.5 122
Togwotee Pass 9580 12.3 12.9 95 12.0 13.4 90
Triple Peak 8500 13.5 11.4 118 13.7 12.8 107
Two Ocean Plateau 9240 17.7 16.4 108 14.5 15.0 97
Willow Creek 8080 18.2 13.8 132 18.2 17.2 106
Younts Peak 8350 8.9 7.9 113 8.1 8.1 100
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Basin Index (%) 115 102
MADISON HEADWATERS IN WYOMING
Black Bear 8170 23.9 20.6 116 24.0 20.7 116
Canyon 7870 8.3 -M * 10.1 -M *
Madison Plateau 7750 16.6 11.7 142 17.5 13.6 129
West Yellowstone 6700 9.3 5.8 160 11.8 8.0 148
Whiskey Creek 6800 11.9 7.8 153 15.5 11.2 138
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Basin Index (%) 134 129
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 9.9 12.6 79 8.9 11.5 77
Canyon 7870 8.3 -M * 10.1 -M *
Evening Star 9200 14.2 14.6 97 16.6 16.3 102
Fisher Creek 9100 19.6 18.1 108 20.6 18.0 114
Monument Peak 8850 11.5 11.4 101 13.6 12.6 108
Northeast Entrance 7350 5.3 5.2 102 7.5 7.4 101
Parker Peak 9400 12.9 11.6 111 13.4 11.6 116
Sylvan Lake 8420 10.4 10.6 98 13.1 13.2 99
Thumb Divide 7980 12.0 7.8 154 11.6 9.5 122
Two Ocean Plateau 9240 17.7 16.4 108 14.5 15.0 97
White Mill 8700 13.8 13.6 101 13.6 13.1 104
Wolverine 7650 6.2 6.4 97 7.0 7.4 95
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Basin Index (%) 104 104
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 4.9 4.2 117 6.0 5.4 111
Deer Park 9700 14.1 7.0 201 14.3 8.9 161
Hobbs Park 10100 9.6 7.0 137 8.9 6.7 133
Kirwin 9550 5.3 6.2 85 7.0 7.0 100
Little Warm 9370 5.9 5.4 109 6.8 7.0 97
South Pass 9040 10.9 6.8 160 10.8 8.2 132
St. Lawrence Alt 8620 4.2 -M * 6.1 -M *
Togwotee Pass 9580 12.3 12.9 95 12.0 13.4 90
Townsend Creek 8700 6.8 4.4 155 7.7 6.0 128
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Basin Index (%) 127 115
BIGHORN BASIN
Bald Mtn. 9380 8.6 10.2 84 7.3 8.7 84
Bear Trap Meadow 8200 4.7 3.4 138 5.5 4.7 117
Bone Springs Div 9350 5.7 8.7 66 5.7 8.3 69
Grave Springs 8550 5.9 4.0 148 6.3 5.0 126
Kirwin 9550 5.3 6.2 85 7.0 7.0 100
Marquette 8760 3.8 3.8 100 4.6 5.4 85
Middle Powder 7760 6.5 5.0 130 5.9 5.4 109
Owl Creek 8975 4.3 2.9 148 5.0 3.5 143
Powder River Pass 9480 5.0 6.2 81 6.5 7.3 89
Shell Creek 9580 6.0 8.3 72 6.7 7.6 88
Timber Creek 7950 2.8 2.6 108 3.3 4.4 75
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Basin Index (%) 96 95
SHOSHONE RIVER
Blackwater 9780 11.8 13.1 90 11.8 12.5 94
Evening Star 9200 14.2 14.6 97 16.6 16.3 102
Marquette 8760 3.8 3.8 100 4.6 5.4 85
Sylvan Lake 8420 10.4 10.6 98 13.1 13.2 99
Sylvan Road 7120 5.7 6.7 85 8.2 10.3 80
Younts Peak 8350 8.9 7.9 113 8.1 8.1 100
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Basin Index (%) 97 95
POWDER RIVER
Bear Trap Meadow 8200 4.7 3.4 138 5.5 4.7 117
Cloud Peak Reservoir 9860 6.9 7.2 96 6.9 7.4 93
Grave Springs 8550 5.9 4.0 148 6.3 5.0 126
Hansen Sawmill 8360 3.8 3.7 103 4.2 4.7 89
Middle Powder 7760 6.5 5.0 130 5.9 5.4 109
Powder River Pass 9480 5.0 6.2 81 6.5 7.3 89
Soldier Park 8720 2.2 3.2 69 3.6 5.0 72
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Basin Index (%) 107 98
TONGUE RIVER
Big Goose 7990 4.4 4.0 110 5.2 5.4 96
Bone Springs Div 9350 5.7 8.7 66 5.7 8.3 69
Burgess Junction 7880 6.0 5.4 111 7.3 6.6 111
Dome Lake 8880 4.0 5.9 68 5.8 6.8 85
Little Goose 8870 4.8 4.8 100 5.8 6.2 94
Sucker Creek 8880 6.1 6.3 97 8.1 7.2 112
Tie Creek 6870 3.5 2.6 135 6.2 5.8 107
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Basin Index (%) 92 95
BELLE FOURCHE
Blind Park 6890 3.6 3.8 95 5.0 5.5 91
Cole Canyon 5910 3.2 2.8 114 4.2 4.8 88
North Rapid Creek 6130 3.7 3.7 100 4.3 4.4 98
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Basin Index (%) 102 92
CHEYENNE RIVER BASIN
Blind Park 6890 3.6 3.8 95 5.0 5.5 91
North Rapid Creek 6130 3.7 3.7 100 4.3 4.4 98
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Basin Index (%) 97 94
UPPER N. PLATTE
Arapaho Ridge 10976 13.8 11.4 121 13.8 12.2 113
Blackhall Mtn 9839 18.6 13.9 134 19.2 15.9 121
Cinnabar Park 9707 -M 11.6 * 11.8 13.2 89
Columbine 9167 15.0 11.4 132 15.1 12.8 118
Divide Peak 8730 12.9 9.8 132 15.0 12.0 125
Joe Wright 10158 12.8 9.8 131 15.5 13.1 118
Laprele Creek 8390 5.4 4.4 123 5.7 6.2 92
Med Bow 10512 18.8 -M * 17.8 -M *
Never Summer 10323 13.9 10.1 138 9.9 9.5 104
North French Creek 10153 15.2 14.2 107 15.2 14.4 106
Old Battle 9860 20.5 15.5 132 22.3 18.0 124
Rawah 9069 8.7 6.0 145 9.8 9.0 109
Sage Creek Basin 7850 11.4 6.8 168 12.0 7.7 156
Sand Lake 10098 13.6 13.8 99 13.6 12.3 111
South Brush Creek 8495 8.4 6.0 140 7.8 7.5 104
Tower 10620 28.0 20.8 135 27.2 20.8 131
Webber Springs 9260 14.5 10.8 134 16.0 14.0 114
Whiskey Park 9020 21.1 12.5 169 20.0 15.4 130
Willow Creek Pass 9523 9.2 6.6 139 9.9 7.1 139
Zirkel 9338 15.2 14.7 103 17.7 16.8 105
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Basin Index (%) 130 117
SWEETWATER
Deer Park 9700 14.1 7.0 201 14.3 8.9 161
Larsen Creek 9000 6.0 4.0 150 8.4 6.6 127
South Pass 9040 10.9 6.8 160 10.8 8.2 132
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Basin Index (%) 174 141
LOWER N. PLATTE
Casper Mtn. 7920 6.8 6.0 113 6.9 7.4 93
Laprele Creek 8390 5.4 4.4 123 5.7 6.2 92
Reno Hill 8430 7.4 6.6 112 8.7 7.5 116
Windy Peak 7915 4.3 3.6 119 5.3 5.4 98
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Basin Index (%) 116 100
LARAMIE RIVER
Brooklyn Lake 10250 11.9 10.8 110 12.7 11.2 113
Cinnabar Park 9707 -M 11.6 * 11.8 13.2 89
Crow Creek 8335 2.5 4.4 57 4.7 5.9 80
Deadman Hill 10239 9.8 9.0 109 9.1 9.2 99
Rawah 9069 8.7 6.0 145 9.8 9.0 109
Roach 9740 9.9 8.2 121 11.4 10.2 112
Windy Peak 7915 4.3 3.6 119 5.3 5.4 98
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Basin Index (%) 112 101
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 5.6 184 13.7 8.2 167
Divide Peak 8730 12.9 9.8 132 15.0 12.0 125
Elk River 8739 15.7 8.5 185 14.7 10.2 144
Elkhead Divide 8800 17.8 -M * 18.0 -M *
Little Snake River 8928 20.2 13.2 153 24.2 18.4 132
Old Battle 9860 20.5 15.5 132 22.3 18.0 124
Sage Creek Basin 7850 11.4 6.8 168 12.0 7.7 156
Sandstone RS 8152 13.5 6.4 211 15.0 9.5 158
Whiskey Park 9020 21.1 12.5 169 20.0 15.4 130
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Basin Index (%) 160 138
UPPER GREEN RIVER
Big Sandy Opening 9080 8.8 6.8 129 8.6 7.0 123
Blind Bull Sum 8650 12.4 12.4 100 8.9 10.5 85
East Rim Divide 7930 6.0 5.4 111 6.2 6.4 97
Elkhart Park G.S. 9400 7.0 6.4 109 6.4 6.9 93
Gros Ventre Summit 8750 7.4 7.2 103 6.9 6.8 101
Gunsight Pass 9820 7.3 7.0 104 7.2 7.5 96
Indian Creek 9425 15.2 11.6 131 12.9 10.6 122
Kendall R.S. 7740 6.6 6.4 103 6.9 7.5 92
Larsen Creek 9000 6.0 4.0 150 8.4 6.6 127
Loomis Park 8240 8.3 7.8 106 8.5 9.2 92
New Fork Lake 8340 6.2 5.7 109 -M 6.0 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 7.3 6.3 116 8.5 7.4 115
Spring Creek Divide 9000 13.7 11.8 116 14.3 12.5 114
Triple Peak 8500 13.5 11.4 118 13.7 12.8 107
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Basin Index (%) 114 105
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.1 3.8 213 8.2 6.6 124
Buck Pasture 9632 11.0 -M * 12.5 -M *
EF Blacks Fork GS 9360 9.4 4.4 214 7.1 5.6 127
Hams Fork 7840 8.3 5.6 148 8.0 5.9 136
Henrys Fork 10182 -M -M * 8.2 -M *
Hewinta 9500 6.7 4.7 143 8.9 7.2 124
Hickerson Park 9122 5.5 3.3 167 6.2 5.4 115
Hole-in-Rock 9168 5.1 3.5 146 6.2 5.6 111
Indian Creek 9425 15.2 11.6 131 12.9 10.6 122
Kelley R.S. 8180 11.1 7.2 154 11.5 9.1 126
Spirit Lk 10235 10.6 5.6 189 10.4 8.5 122
Steel Creek Park 10158 11.2 7.0 160 11.0 8.7 126
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Basin Index (%) 161 123
UPPER BEAR RIVER
Bear River RS 8777 7.4 4.2 176 8.8 6.4 138
Bug Lake 7987 14.0 8.0 175 11.9 9.5 125
Burts Miller Ranch 8000 5.9 3.1 190 9.0 4.5 200
Chalk Creek #1 9171 16.6 10.8 154 17.1 11.9 144
Giveout 6930 7.1 4.2 169 8.3 6.6 126
Hayden Fork 9130 10.7 6.6 162 14.3 10.4 138
Kelley R.S. 8180 11.1 7.2 154 11.5 9.1 126
Lily Lake 9133 9.5 6.2 153 9.6 8.4 114
Monte Cristo 8932 19.8 12.4 160 19.2 13.0 148
Salt River Summit 7640 9.5 6.2 153 9.7 8.4 115
Spring Creek Divide 9000 13.7 11.8 116 14.3 12.5 114
Trial Lake 9992 19.0 9.8 194 19.4 11.4 170
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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.
