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 THURSDAY: FEBRUARY 9 , 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 11.0 12.6 87 12.4 14.7 84
Blind Bull Sum 8650 14.4 16.0 90 10.3 12.8 80
Cottonwood Creek 7670 15.7 14.2 111 16.7 16.6 101
East Rim Divide 7930 7.6 7.2 106 7.2 7.8 92
Grand Targhee 9260 29.9 29.6 101 18.6 22.2 84
Granite Creek 6770 10.5 11.8 89 9.4 13.1 72
Grassy Lake 7265 19.8 21.6 92 23.5 24.2 97
Gros Ventre Summit 8750 7.9 8.2 96 7.6 8.2 93
Gunsight Pass 9820 8.6 8.8 98 8.4 9.5 88
Lewis Lake Divide 7850 21.6 20.0 108 24.1 22.4 108
Loomis Park 8240 9.9 10.6 93 10.0 11.1 90
Phillips Bench 8200 18.2 16.8 108 18.8 18.4 102
Salt River Summit 7640 11.5 8.4 137 11.4 10.7 107
Snake River Station 6920 12.1 12.2 99 14.5 15.8 92
Somsen Ranch 6800 11.7 9.0 130 13.5 11.6 116
Spring Creek Divide 9000 16.4 15.8 104 15.9 15.8 101
Thumb Divide 7980 12.8 10.2 125 12.3 11.8 104
Togwotee Pass 9580 14.7 15.0 98 14.1 16.6 85
Triple Peak 8500 15.2 15.4 99 15.6 16.4 95
Two Ocean Plateau 9240 19.6 20.5 96 16.1 17.6 91
Willow Creek 8080 22.7 18.6 122 22.3 22.1 101
Younts Peak 8350 10.6 9.6 110 9.2 10.1 91
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Basin Index (%) 103 95
MADISON HEADWATERS IN WYOMING
Black Bear 8170 27.2 24.4 111 27.0 24.0 112
Canyon 7870 9.4 -M * 11.5 -M *
Madison Plateau 7750 18.3 14.4 127 19.2 15.8 122
West Yellowstone 6700 10.2 7.4 138 13.1 9.8 134
Whiskey Creek 6800 13.1 9.9 132 16.8 12.7 132
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Basin Index (%) 123 122
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 11.1 15.6 71 10.1 14.5 70
Canyon 7870 9.4 -M * 11.5 -M *
Evening Star 9200 16.4 18.3 90 18.9 19.8 95
Fisher Creek 9100 22.0 22.4 98 23.0 22.0 105
Monument Peak 8850 13.8 13.8 100 16.1 15.2 106
Northeast Entrance 7350 6.2 6.8 91 8.6 9.0 96
Parker Peak 9400 15.2 14.6 104 15.6 14.0 111
Sylvan Lake 8420 12.6 13.2 95 15.5 16.0 97
Thumb Divide 7980 12.8 10.2 125 12.3 11.8 104
Two Ocean Plateau 9240 19.6 20.5 96 16.1 17.6 91
White Mill 8700 15.6 16.6 94 15.2 15.6 97
Wolverine 7650 7.9 8.6 92 8.6 8.8 98
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Basin Index (%) 95 97
WIND RIVER
Burroughs Creek 8750 6.8 -M * 7.4 -M *
Castle Creek 8400 4.4 5.0 88 4.9 6.2 79
Cold Springs 9630 5.6 5.2 108 6.8 6.3 108
Deer Park 9700 15.1 9.0 168 15.2 10.7 142
Hobbs Park 10100 10.2 8.8 116 9.5 7.8 122
Kirwin 9550 6.0 7.1 85 7.7 8.0 96
Little Warm 9370 6.7 6.8 99 7.5 7.8 96
South Pass 9040 11.8 8.6 137 11.6 9.6 121
St. Lawrence Alt 8620 4.7 -M * 6.4 -M *
Togwotee Pass 9580 14.7 15.0 98 14.1 16.6 85
Townsend Creek 8700 7.4 5.8 128 8.4 7.2 117
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Basin Index (%) 115 107
BIGHORN BASIN
Bald Mtn. 9380 12.7 11.8 108 10.5 10.4 101
Bear Trap Meadow 8200 6.0 4.1 146 6.4 5.4 119
Bone Springs Div 9350 8.5 10.6 80 7.6 9.6 79
Grave Springs 8550 7.3 5.1 143 7.7 6.0 128
Kirwin 9550 6.0 7.1 85 7.7 8.0 96
Marquette 8760 4.6 4.5 102 5.1 6.2 82
Middle Powder 7760 8.1 6.2 131 7.0 6.2 113
Owl Creek 8975 5.0 3.7 135 5.4 4.0 135
Powder River Pass 9480 7.0 7.2 97 8.7 8.5 102
Shell Creek 9580 8.3 9.6 86 8.8 9.0 98
Timber Creek 7950 3.7 3.2 116 4.1 5.1 80
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Basin Index (%) 106 101
SHOSHONE RIVER
Blackwater 9780 12.9 15.6 83 12.8 15.0 85
Evening Star 9200 16.4 18.3 90 18.9 19.8 95
Marquette 8760 4.6 4.5 102 5.1 6.2 82
Sylvan Lake 8420 12.6 13.2 95 15.5 16.0 97
Sylvan Road 7120 6.9 8.6 80 9.9 12.4 80
Younts Peak 8350 10.6 9.6 110 9.2 10.1 91
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Basin Index (%) 92 90
POWDER RIVER
Bear Trap Meadow 8200 6.0 4.1 146 6.4 5.4 119
Cloud Peak Reservoir 9860 9.2 9.1 101 9.2 8.6 107
Grave Springs 8550 7.3 5.1 143 7.7 6.0 128
Hansen Sawmill 8360 5.0 4.4 114 5.3 5.4 98
Middle Powder 7760 8.1 6.2 131 7.0 6.2 113
Powder River Pass 9480 7.0 7.2 97 8.7 8.5 102
Soldier Park 8720 3.3 4.4 75 4.8 6.2 77
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Basin Index (%) 113 106
TONGUE RIVER
Big Goose 7990 6.4 5.2 123 7.0 6.6 106
Bone Springs Div 9350 8.5 10.6 80 7.6 9.6 79
Burgess Junction 7880 8.6 7.0 123 9.9 7.9 125
Dome Lake 8880 5.9 7.1 83 7.8 8.1 96
Little Goose 8870 7.0 6.6 106 7.9 7.7 103
Sucker Creek 8880 9.2 7.9 116 11.4 8.6 133
Tie Creek 6870 6.4 3.6 178 9.3 7.3 127
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Basin Index (%) 108 109
BELLE FOURCHE
Blind Park 6890 5.6 5.2 108 7.2 6.7 107
Cole Canyon 5910 5.2 3.7 141 6.4 5.6 114
North Rapid Creek 6130 5.1 4.9 104 5.7 5.5 104
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Basin Index (%) 115 108
CHEYENNE RIVER BASIN
Blind Park 6890 5.6 5.2 108 7.2 6.7 107
North Rapid Creek 6130 5.1 4.9 104 5.7 5.5 104
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Basin Index (%) 106 106
UPPER N. PLATTE
Arapaho Ridge 10976 17.2 15.2 113 17.0 15.3 111
Blackhall Mtn 9839 25.2 19.6 129 25.2 20.0 126
Cinnabar Park 9707 -M 13.8 * 16.0 16.4 98
Columbine 9167 20.0 15.5 129 18.9 16.4 115
Divide Peak 8730 17.8 13.2 135 19.3 14.6 132
Joe Wright 10158 17.1 12.9 133 19.4 16.8 115
Laprele Creek 8390 8.1 5.6 145 8.4 7.4 114
Med Bow 10512 26.0 -M * 23.7 -M *
Never Summer 10323 17.9 13.1 137 12.9 11.2 115
North French Creek 10153 20.7 18.0 115 20.6 17.6 117
Old Battle 9860 26.1 20.4 128 26.6 23.3 114
Rawah 9069 11.0 7.8 141 12.3 10.9 113
Sage Creek Basin 7850 15.2 9.5 160 14.7 9.2 160
Sand Lake 10098 18.5 17.2 108 18.5 16.0 116
South Brush Creek 8495 11.3 7.7 147 10.5 9.0 117
Tower 10620 37.5 27.4 137 32.7 26.6 123
Webber Springs 9260 18.3 13.9 132 20.2 17.2 117
Whiskey Park 9020 27.4 17.4 157 25.5 18.2 140
Willow Creek Pass 9523 11.8 8.6 137 12.1 8.8 138
Zirkel 9338 20.7 19.6 106 23.0 21.4 107
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Basin Index (%) 130 119
SWEETWATER
Deer Park 9700 15.1 9.0 168 15.2 10.7 142
Larsen Creek 9000 6.9 7.0 99 9.2 8.8 105
South Pass 9040 11.8 8.6 137 11.6 9.6 121
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Basin Index (%) 137 124
LOWER N. PLATTE
Casper Mtn. 7920 9.7 8.1 120 9.7 8.8 110
Laprele Creek 8390 8.1 5.6 145 8.4 7.4 114
Reno Hill 8430 10.7 8.4 127 12.0 8.8 136
Windy Peak 7915 6.9 4.8 144 7.8 6.6 118
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Basin Index (%) 132 120
LARAMIE RIVER
Brooklyn Lake 10250 16.0 14.2 113 16.8 14.1 119
Cinnabar Park 9707 -M 13.8 * 16.0 16.4 98
Crow Creek 8335 4.1 5.5 75 6.5 6.9 94
Deadman Hill 10239 12.8 11.4 112 11.9 11.6 103
Rawah 9069 11.0 7.8 141 12.3 10.9 113
Roach 9740 12.8 10.4 123 14.4 12.4 116
Windy Peak 7915 6.9 4.8 144 7.8 6.6 118
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Basin Index (%) 118 109
S. PLATTE
Crow Creek 8335 4.1 5.5 75 6.5 6.9 94
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Basin Index (%) 75 94
LITTLE SNAKE RIVER
Battle Mountain 7498 13.0 7.8 167 16.8 10.6 158
Divide Peak 8730 17.8 13.2 135 19.3 14.6 132
Elk River 8739 19.3 11.8 164 18.0 12.8 141
Elkhead Divide 8800 21.5 -M * 21.4 -M *
Little Snake River 8928 25.9 17.0 152 29.4 23.1 127
Old Battle 9860 26.1 20.4 128 26.6 23.3 114
Sage Creek Basin 7850 15.2 9.5 160 14.7 9.2 160
Sandstone RS 8152 16.6 9.0 184 18.2 12.0 152
Whiskey Park 9020 27.4 17.4 157 25.5 18.2 140
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Basin Index (%) 152 136
UPPER GREEN RIVER
Big Sandy Opening 9080 9.5 8.8 108 9.4 8.3 113
Blind Bull Sum 8650 14.4 16.0 90 10.3 12.8 80
East Rim Divide 7930 7.6 7.2 106 7.2 7.8 92
Elkhart Park G.S. 9400 8.1 8.2 99 7.3 8.8 83
Gros Ventre Summit 8750 7.9 8.2 96 7.6 8.2 93
Gunsight Pass 9820 8.6 8.8 98 8.4 9.5 88
Indian Creek 9425 17.7 15.2 116 15.1 13.8 109
Kendall R.S. 7740 7.6 8.1 94 8.0 9.0 89
Larsen Creek 9000 6.9 7.0 99 9.2 8.8 105
Loomis Park 8240 9.9 10.6 93 10.0 11.1 90
New Fork Lake 8340 7.2 7.0 103 -M 7.1 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 8.7 8.8 99 9.9 9.4 105
Spring Creek Divide 9000 16.4 15.8 104 15.9 15.8 101
Triple Peak 8500 15.2 15.4 99 15.6 16.4 95
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Basin Index (%) 100 96
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.9 5.4 165 9.2 8.4 110
Buck Pasture 9632 12.4 -M * 14.4 -M *
EF Blacks Fork GS 9360 9.7 7.2 135 7.5 7.0 107
Hams Fork 7840 9.9 7.8 127 9.3 7.6 122
Henrys Fork 10182 -M -M * 9.8 -M *
Hewinta 9500 8.2 5.9 139 10.2 9.0 113
Hickerson Park 9122 6.3 4.4 143 7.1 6.8 104
Hole-in-Rock 9168 5.9 4.5 131 6.9 6.7 103
Indian Creek 9425 17.7 15.2 116 15.1 13.8 109
Kelley R.S. 8180 13.0 9.7 134 13.7 11.6 118
Spirit Lk 10235 12.3 7.2 171 12.0 10.8 111
Steel Creek Park 10158 12.7 9.4 135 12.6 10.0 126
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Basin Index (%) 136 113
UPPER BEAR RIVER
Bear River RS 8777 8.3 6.2 134 10.0 7.8 128
Bug Lake 7987 17.1 12.6 136 14.3 12.8 112
Burts Miller Ranch 8000 6.7 4.5 149 9.7 5.2 187
Chalk Creek #1 9171 18.8 13.6 138 19.2 15.4 125
Giveout 6930 8.3 6.2 134 9.7 8.6 113
Hayden Fork 9130 12.5 9.1 137 16.7 13.0 128
Kelley R.S. 8180 13.0 9.7 134 13.7 11.6 118
Lily Lake 9133 11.4 8.1 141 11.2 10.4 108
Monte Cristo 8932 23.5 17.0 138 22.1 17.3 128
Salt River Summit 7640 11.5 8.4 137 11.4 10.7 107
Spring Creek Divide 9000 16.4 15.8 104 15.9 15.8 101
Trial Lake 9992 22.0 13.8 159 22.0 15.0 147
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Basin Index (%) 136 122
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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.
