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: JANUARY 26 , 2023
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Median Med
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7060 9.8 10.6 92 11.0 13.4 82
Blind Bull Sum 8650 12.4 14.2 87 9.2 11.3 81
Cottonwood Creek 7670 13.1 12.0 109 14.1 14.4 98
East Rim Divide 7930 6.2 6.6 94 6.3 7.0 90
Grand Targhee 9260 25.6 25.5 100 15.7 20.0 78
Granite Creek 6770 9.1 9.6 95 8.3 12.1 69
Grassy Lake 7265 16.8 18.5 91 20.4 22.6 90
Gros Ventre Summit 8750 7.2 7.8 92 7.0 7.6 92
Gunsight Pass 9820 7.4 7.8 95 7.3 8.4 87
Lewis Lake Divide 7850 20.2 17.9 113 22.2 21.3 104
Loomis Park 8240 8.3 9.2 90 8.6 10.0 86
Phillips Bench 8200 15.6 15.6 100 16.3 16.5 99
Salt River Summit 7640 9.8 7.2 136 9.9 9.1 109
Snake River Station 6920 10.7 10.2 105 13.0 14.4 90
Somsen Ranch 6800 9.5 7.8 122 11.4 10.4 110
Spring Creek Divide 9000 13.4 13.6 99 14.6 14.0 104
Thumb Divide 7980 12.2 9.2 133 11.7 11.2 104
Togwotee Pass 9580 12.6 13.8 91 12.3 14.6 84
Triple Peak 8500 13.5 13.1 103 13.6 15.1 90
Two Ocean Plateau 9240 18.0 17.7 102 14.7 15.8 93
Willow Creek 8080 19.0 16.2 117 19.1 19.2 99
Younts Peak 8350 9.0 8.8 102 8.2 9.2 89
----- -----
Basin Index (%) 102 92
MADISON HEADWATERS IN WYOMING
Black Bear 8170 24.9 22.0 113 24.9 22.5 111
Canyon 7870 8.5 -M * 10.5 -M *
Madison Plateau 7750 17.4 13.4 130 18.1 15.0 121
West Yellowstone 6700 9.7 6.6 147 12.4 8.9 139
Whiskey Creek 6800 12.2 9.0 136 16.1 11.9 135
----- -----
Basin Index (%) 126 123
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 10.2 13.8 74 9.2 12.2 75
Canyon 7870 8.5 -M * 10.5 -M *
Evening Star 9200 14.2 16.7 85 16.5 17.8 93
Fisher Creek 9100 20.2 20.3 100 21.1 19.8 107
Monument Peak 8850 11.8 12.8 92 14.1 13.8 102
Northeast Entrance 7350 5.5 6.1 90 7.8 8.1 96
Parker Peak 9400 13.2 13.2 100 13.7 12.4 110
Sylvan Lake 8420 10.8 11.8 92 13.6 14.2 96
Thumb Divide 7980 12.2 9.2 133 11.7 11.2 104
Two Ocean Plateau 9240 18.0 17.7 102 14.7 15.8 93
White Mill 8700 14.2 14.8 96 14.0 14.4 97
Wolverine 7650 6.4 7.5 85 7.0 8.1 86
----- -----
Basin Index (%) 95 97
WIND RIVER
Burroughs Creek 8750 5.8 -M * 6.7 -M *
Castle Creek 8400 3.6 4.4 82 4.1 5.7 72
Cold Springs 9630 5.2 4.8 108 6.4 5.8 110
Deer Park 9700 14.2 7.6 187 14.2 9.7 146
Hobbs Park 10100 9.8 7.5 131 9.0 7.0 129
Kirwin 9550 5.4 6.6 82 7.1 7.4 96
Little Warm 9370 5.9 6.0 98 6.7 7.6 88
South Pass 9040 11.2 7.8 144 10.8 9.1 119
St. Lawrence Alt 8620 4.4 -M * 6.1 -M *
Togwotee Pass 9580 12.6 13.8 91 12.3 14.6 84
Townsend Creek 8700 7.1 5.0 142 8.0 6.5 123
----- -----
Basin Index (%) 118 107
BIGHORN BASIN
Bald Mtn. 9380 9.4 10.8 87 7.8 9.6 81
Bear Trap Meadow 8200 5.0 3.8 132 5.6 5.1 110
Bone Springs Div 9350 6.5 9.6 68 6.2 8.7 71
Grave Springs 8550 6.3 4.5 140 6.7 5.5 122
Kirwin 9550 5.4 6.6 82 7.1 7.4 96
Marquette 8760 4.0 3.9 103 4.7 5.5 85
Middle Powder 7760 7.2 5.6 129 6.2 5.9 105
Owl Creek 8975 4.4 3.2 138 5.0 3.7 135
Powder River Pass 9480 5.6 6.4 88 7.0 7.8 90
Shell Creek 9580 6.4 8.8 73 7.1 8.3 86
Timber Creek 7950 3.0 2.8 107 3.4 4.5 76
----- -----
Basin Index (%) 96 93
SHOSHONE RIVER
Blackwater 9780 11.8 14.0 84 11.6 13.4 87
Evening Star 9200 14.2 16.7 85 16.5 17.8 93
Marquette 8760 4.0 3.9 103 4.7 5.5 85
Sylvan Lake 8420 10.8 11.8 92 13.6 14.2 96
Sylvan Road 7120 5.7 7.6 75 8.5 11.2 76
Younts Peak 8350 9.0 8.8 102 8.2 9.2 89
----- -----
Basin Index (%) 88 88
POWDER RIVER
Bear Trap Meadow 8200 5.0 3.8 132 5.6 5.1 110
Cloud Peak Reservoir 9860 7.6 8.2 93 7.7 7.8 99
Grave Springs 8550 6.3 4.5 140 6.7 5.5 122
Hansen Sawmill 8360 3.9 4.0 98 4.3 4.9 88
Middle Powder 7760 7.2 5.6 129 6.2 5.9 105
Powder River Pass 9480 5.6 6.4 88 7.0 7.8 90
Soldier Park 8720 2.4 3.6 67 3.9 5.5 71
----- -----
Basin Index (%) 105 97
TONGUE RIVER
Big Goose 7990 5.0 4.4 114 5.8 5.8 100
Bone Springs Div 9350 6.5 9.6 68 6.2 8.7 71
Burgess Junction 7880 6.9 6.3 110 8.3 7.4 112
Dome Lake 8880 4.5 6.4 70 6.3 7.2 88
Little Goose 8870 5.5 5.4 102 6.5 6.7 97
Sucker Creek 8880 7.2 7.0 103 9.3 8.0 116
Tie Creek 6870 4.2 3.2 131 7.1 6.4 111
----- -----
Basin Index (%) 94 99
BELLE FOURCHE
Blind Park 6890 4.6 4.4 105 6.0 6.2 97
Cole Canyon 5910 3.9 3.2 122 5.1 5.2 98
North Rapid Creek 6130 4.3 4.2 102 5.1 5.0 102
----- -----
Basin Index (%) 108 99
CHEYENNE RIVER BASIN
Blind Park 6890 4.6 4.4 105 6.0 6.2 97
North Rapid Creek 6130 4.3 4.2 102 5.1 5.0 102
----- -----
Basin Index (%) 103 99
UPPER N. PLATTE
Arapaho Ridge 10976 15.3 13.4 114 15.3 13.4 114
Blackhall Mtn 9839 20.7 17.0 122 21.0 18.0 117
Cinnabar Park 9707 -M 12.7 * 13.2 14.8 89
Columbine 9167 16.4 13.4 122 15.9 14.6 109
Divide Peak 8730 14.7 11.4 129 16.5 13.3 124
Joe Wright 10158 14.2 11.2 127 17.0 15.0 113
Laprele Creek 8390 6.3 5.2 121 6.6 6.6 100
Med Bow 10512 20.1 -M * 18.6 -M *
Never Summer 10323 15.4 10.9 141 10.9 10.0 109
North French Creek 10153 15.8 16.2 98 15.9 15.6 102
Old Battle 9860 22.3 17.9 125 23.3 20.4 114
Rawah 9069 9.5 6.7 142 10.8 9.6 112
Sage Creek Basin 7850 12.6 8.5 148 12.6 8.4 150
Sand Lake 10098 14.7 15.6 94 14.8 14.7 101
South Brush Creek 8495 8.7 7.0 124 8.2 8.2 100
Tower 10620 31.0 24.4 127 29.0 24.4 119
Webber Springs 9260 15.7 12.4 127 17.3 15.3 113
Whiskey Park 9020 22.4 15.4 145 21.3 17.4 122
Willow Creek Pass 9523 10.5 7.4 142 10.9 8.0 136
Zirkel 9338 16.6 16.4 101 18.9 18.8 101
----- -----
Basin Index (%) 123 112
SWEETWATER
Deer Park 9700 14.2 7.6 187 14.2 9.7 146
Larsen Creek 9000 5.7 4.8 119 8.2 7.7 106
South Pass 9040 11.2 7.8 144 10.8 9.1 119
----- -----
Basin Index (%) 154 125
LOWER N. PLATTE
Casper Mtn. 7920 7.8 7.3 107 7.9 7.9 100
Laprele Creek 8390 6.3 5.2 121 6.6 6.6 100
Reno Hill 8430 8.4 7.7 109 9.9 8.2 121
Windy Peak 7915 5.3 4.2 126 6.3 6.0 105
----- -----
Basin Index (%) 114 107
LARAMIE RIVER
Brooklyn Lake 10250 13.2 12.0 110 14.0 12.6 111
Cinnabar Park 9707 -M 12.7 * 13.2 14.8 89
Crow Creek 8335 3.4 4.8 71 5.5 6.5 85
Deadman Hill 10239 10.7 10.2 105 9.9 10.2 97
Rawah 9069 9.5 6.7 142 10.8 9.6 112
Roach 9740 11.0 9.4 117 12.3 11.4 108
Windy Peak 7915 5.3 4.2 126 6.3 6.0 105
----- -----
Basin Index (%) 112 101
S. PLATTE
Crow Creek 8335 3.4 4.8 71 5.5 6.5 85
----- -----
Basin Index (%) 71 85
LITTLE SNAKE RIVER
Battle Mountain 7498 10.3 6.8 151 14.1 9.6 147
Divide Peak 8730 14.7 11.4 129 16.5 13.3 124
Elk River 8739 16.4 10.4 158 15.1 11.6 130
Elkhead Divide 8800 18.2 -M * -M -M *
Little Snake River 8928 21.5 15.0 143 24.9 21.0 119
Old Battle 9860 22.3 17.9 125 23.3 20.4 114
Sage Creek Basin 7850 12.6 8.5 148 12.6 8.4 150
Sandstone RS 8152 13.9 7.6 183 15.6 11.2 139
Whiskey Park 9020 22.4 15.4 145 21.3 17.4 122
----- -----
Basin Index (%) 144 127
UPPER GREEN RIVER
Big Sandy Opening 9080 8.5 7.8 109 8.4 7.8 108
Blind Bull Sum 8650 12.4 14.2 87 9.2 11.3 81
East Rim Divide 7930 6.2 6.6 94 6.3 7.0 90
Elkhart Park G.S. 9400 7.1 7.3 97 6.4 7.6 84
Gros Ventre Summit 8750 7.2 7.8 92 7.0 7.6 92
Gunsight Pass 9820 7.4 7.8 95 7.3 8.4 87
Indian Creek 9425 15.5 13.1 118 13.3 12.2 109
Kendall R.S. 7740 6.5 7.3 89 7.0 8.5 82
Larsen Creek 9000 5.7 4.8 119 8.2 7.7 106
Loomis Park 8240 8.3 9.2 90 8.6 10.0 86
New Fork Lake 8340 6.3 6.5 97 -M 6.7 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 7.2 7.8 92 8.4 8.4 100
Spring Creek Divide 9000 13.4 13.6 99 14.6 14.0 104
Triple Peak 8500 13.5 13.1 103 13.6 15.1 90
----- -----
Basin Index (%) 99 94
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.2 5.0 164 8.5 7.4 115
Buck Pasture 9632 11.3 -M * 13.0 -M *
EF Blacks Fork GS 9360 9.0 6.0 150 6.9 6.4 108
Hams Fork 7840 8.4 6.7 125 8.3 6.8 122
Henrys Fork 10182 -M -M * 9.0 -M *
Hewinta 9500 7.2 5.2 138 9.3 8.2 113
Hickerson Park 9122 6.1 3.8 161 6.9 5.8 119
Hole-in-Rock 9168 5.4 3.9 138 6.5 6.1 107
Indian Creek 9425 15.5 13.1 118 13.3 12.2 109
Kelley R.S. 8180 11.3 8.4 135 12.0 10.5 114
Spirit Lk 10235 11.9 6.5 183 11.6 9.6 121
Steel Creek Park 10158 11.7 8.4 139 11.5 9.2 125
----- -----
Basin Index (%) 141 115
UPPER BEAR RIVER
Bear River RS 8777 7.6 5.5 138 9.3 7.1 131
Bug Lake 7987 14.9 9.6 155 12.4 10.8 115
Burts Miller Ranch 8000 5.9 3.4 174 9.3 4.9 190
Chalk Creek #1 9171 17.5 11.7 150 17.6 13.6 129
Giveout 6930 7.1 5.6 127 8.5 7.4 115
Hayden Fork 9130 11.3 7.9 143 15.2 11.9 128
Kelley R.S. 8180 11.3 8.4 135 12.0 10.5 114
Lily Lake 9133 10.0 7.0 143 10.3 9.4 110
Monte Cristo 8932 21.0 14.1 149 20.0 15.4 130
Salt River Summit 7640 9.8 7.2 136 9.9 9.1 109
Spring Creek Divide 9000 13.4 13.6 99 14.6 14.0 104
Trial Lake 9992 20.0 11.4 175 20.3 13.4 151
----- -----
Basin Index (%) 142 125
-----------------------------------------------------------------------------
-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.
----------------------------------------------------------------------------
-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.
