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 SATURDAY: JANUARY 28 , 2023
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Median Med
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7060 10.4 11.0 95 11.7 13.4 87
Blind Bull Sum 8650 13.2 14.3 92 9.5 11.4 83
Cottonwood Creek 7670 14.1 12.4 114 15.1 14.8 102
East Rim Divide 7930 7.0 6.8 103 6.7 7.2 93
Grand Targhee 9260 28.1 26.0 108 17.4 20.0 87
Granite Creek 6770 9.5 10.0 95 8.8 12.2 72
Grassy Lake 7265 18.2 18.8 97 21.7 23.0 94
Gros Ventre Summit 8750 7.4 7.8 95 7.0 7.7 91
Gunsight Pass 9820 7.9 8.0 99 7.8 8.6 91
Lewis Lake Divide 7850 21.0 18.8 112 23.0 21.6 106
Loomis Park 8240 8.9 9.2 97 9.1 10.2 89
Phillips Bench 8200 16.8 15.8 106 17.4 16.8 104
Salt River Summit 7640 10.6 7.4 143 10.6 9.3 114
Snake River Station 6920 11.3 10.7 106 13.6 14.7 93
Somsen Ranch 6800 10.6 7.9 134 12.3 10.6 116
Spring Creek Divide 9000 14.7 14.2 104 15.6 14.4 108
Thumb Divide 7980 12.6 9.7 130 12.1 11.4 106
Togwotee Pass 9580 13.3 14.2 94 12.8 14.6 88
Triple Peak 8500 14.1 13.2 107 14.4 15.2 95
Two Ocean Plateau 9240 18.8 18.0 104 15.3 16.2 94
Willow Creek 8080 20.4 16.4 124 20.2 19.6 103
Younts Peak 8350 9.2 8.8 105 8.4 9.2 91
----- -----
Basin Index (%) 107 96
MADISON HEADWATERS IN WYOMING
Black Bear 8170 26.0 22.3 117 26.1 22.7 115
Canyon 7870 8.9 -M * 11.0 -M *
Madison Plateau 7750 18.1 13.6 133 18.6 15.2 122
West Yellowstone 6700 10.1 6.8 149 12.8 9.0 142
Whiskey Creek 6800 12.8 9.0 142 16.4 12.0 137
----- -----
Basin Index (%) 130 125
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 10.7 13.9 77 9.5 12.4 77
Canyon 7870 8.9 -M * 11.0 -M *
Evening Star 9200 15.1 16.9 89 17.5 18.0 97
Fisher Creek 9100 20.8 20.5 101 21.9 20.1 109
Monument Peak 8850 12.7 13.1 97 14.9 14.1 106
Northeast Entrance 7350 6.0 6.2 97 8.2 8.2 100
Parker Peak 9400 14.3 13.2 108 14.6 12.6 116
Sylvan Lake 8420 11.7 12.2 96 13.9 14.4 97
Thumb Divide 7980 12.6 9.7 130 12.1 11.4 106
Two Ocean Plateau 9240 18.8 18.0 104 15.3 16.2 94
White Mill 8700 14.7 14.8 99 14.4 14.6 99
Wolverine 7650 7.3 7.6 96 7.9 8.2 96
----- -----
Basin Index (%) 99 100
WIND RIVER
Burroughs Creek 8750 6.1 -M * 6.8 -M *
Castle Creek 8400 3.7 4.4 84 4.2 5.8 72
Cold Springs 9630 5.2 4.8 108 6.4 5.8 110
Deer Park 9700 14.3 7.8 183 14.4 10.1 143
Hobbs Park 10100 9.9 7.7 129 9.2 7.0 131
Kirwin 9550 5.5 6.6 83 7.2 7.5 96
Little Warm 9370 6.2 6.0 103 7.0 7.6 92
South Pass 9040 11.2 7.9 142 11.0 9.2 120
St. Lawrence Alt 8620 4.5 -M * 6.2 -M *
Togwotee Pass 9580 13.3 14.2 94 12.8 14.6 88
Townsend Creek 8700 7.1 5.0 142 8.0 6.5 123
----- -----
Basin Index (%) 119 108
BIGHORN BASIN
Bald Mtn. 9380 11.1 10.9 102 9.2 9.6 96
Bear Trap Meadow 8200 5.4 3.8 142 6.0 5.2 115
Bone Springs Div 9350 7.5 9.6 78 6.9 8.8 78
Grave Springs 8550 6.6 4.7 140 7.0 5.6 125
Kirwin 9550 5.5 6.6 83 7.2 7.5 96
Marquette 8760 4.3 3.9 110 5.0 5.6 89
Middle Powder 7760 7.4 5.8 128 6.5 5.9 110
Owl Creek 8975 4.5 3.2 141 5.1 3.8 134
Powder River Pass 9480 6.3 6.6 95 7.9 8.0 99
Shell Creek 9580 7.4 9.0 82 8.0 8.4 95
Timber Creek 7950 3.2 2.8 114 3.7 4.6 80
----- -----
Basin Index (%) 103 99
SHOSHONE RIVER
Blackwater 9780 12.2 14.2 86 12.1 13.6 89
Evening Star 9200 15.1 16.9 89 17.5 18.0 97
Marquette 8760 4.3 3.9 110 5.0 5.6 89
Sylvan Lake 8420 11.7 12.2 96 13.9 14.4 97
Sylvan Road 7120 6.3 7.8 81 9.1 11.4 80
Younts Peak 8350 9.2 8.8 105 8.4 9.2 91
----- -----
Basin Index (%) 92 91
POWDER RIVER
Bear Trap Meadow 8200 5.4 3.8 142 6.0 5.2 115
Cloud Peak Reservoir 9860 8.4 8.2 102 8.4 8.0 105
Grave Springs 8550 6.6 4.7 140 7.0 5.6 125
Hansen Sawmill 8360 4.4 4.1 107 4.6 5.0 92
Middle Powder 7760 7.4 5.8 128 6.5 5.9 110
Powder River Pass 9480 6.3 6.6 95 7.9 8.0 99
Soldier Park 8720 2.9 3.5 83 4.3 5.5 78
----- -----
Basin Index (%) 113 103
TONGUE RIVER
Big Goose 7990 5.9 4.6 128 6.5 5.8 112
Bone Springs Div 9350 7.5 9.6 78 6.9 8.8 78
Burgess Junction 7880 7.7 6.3 122 9.0 7.4 122
Dome Lake 8880 5.3 6.5 82 7.1 7.4 96
Little Goose 8870 6.4 5.6 114 7.3 6.8 107
Sucker Creek 8880 8.4 7.2 117 10.6 8.2 129
Tie Creek 6870 5.5 3.2 172 8.2 6.4 128
----- -----
Basin Index (%) 109 109
BELLE FOURCHE
Blind Park 6890 5.1 4.5 113 6.6 6.3 105
Cole Canyon 5910 4.4 3.2 138 5.6 5.2 108
North Rapid Creek 6130 4.6 4.3 107 5.4 5.0 108
----- -----
Basin Index (%) 118 107
CHEYENNE RIVER BASIN
Blind Park 6890 5.1 4.5 113 6.6 6.3 105
North Rapid Creek 6130 4.6 4.3 107 5.4 5.0 108
----- -----
Basin Index (%) 110 106
UPPER N. PLATTE
Arapaho Ridge 10976 15.9 13.4 119 15.8 13.6 116
Blackhall Mtn 9839 22.0 17.2 128 22.2 18.1 123
Cinnabar Park 9707 -M 12.8 * 14.5 15.0 97
Columbine 9167 17.8 13.4 133 17.1 14.7 116
Divide Peak 8730 15.8 11.6 136 17.6 13.4 131
Joe Wright 10158 15.2 11.4 133 17.6 15.0 117
Laprele Creek 8390 7.3 5.2 140 7.5 6.6 114
Med Bow 10512 22.9 -M * 20.4 -M *
Never Summer 10323 15.9 11.0 145 11.4 10.2 112
North French Creek 10153 18.4 16.3 113 18.0 15.8 114
Old Battle 9860 23.5 18.4 128 24.2 20.4 119
Rawah 9069 9.9 6.8 146 11.1 9.6 116
Sage Creek Basin 7850 13.9 8.7 160 13.6 8.5 160
Sand Lake 10098 16.3 15.6 104 16.2 14.9 109
South Brush Creek 8495 10.0 7.0 143 9.4 8.2 115
Tower 10620 33.1 25.2 131 30.2 24.8 122
Webber Springs 9260 16.4 12.6 130 18.2 15.4 118
Whiskey Park 9020 24.4 15.8 154 22.9 17.7 129
Willow Creek Pass 9523 10.6 7.6 139 11.1 8.2 135
Zirkel 9338 18.0 16.6 108 20.3 18.9 107
----- -----
Basin Index (%) 130 119
SWEETWATER
Deer Park 9700 14.3 7.8 183 14.4 10.1 143
Larsen Creek 9000 6.2 4.8 129 8.6 7.8 110
South Pass 9040 11.2 7.9 142 11.0 9.2 120
----- -----
Basin Index (%) 155 125
LOWER N. PLATTE
Casper Mtn. 7920 8.7 7.2 121 8.7 8.2 106
Laprele Creek 8390 7.3 5.2 140 7.5 6.6 114
Reno Hill 8430 9.4 8.0 118 10.7 8.4 127
Windy Peak 7915 6.0 4.2 143 7.0 6.1 115
----- -----
Basin Index (%) 128 116
LARAMIE RIVER
Brooklyn Lake 10250 14.5 12.3 118 15.2 12.8 119
Cinnabar Park 9707 -M 12.8 * 14.5 15.0 97
Crow Creek 8335 3.7 4.9 76 5.6 6.5 86
Deadman Hill 10239 11.0 10.4 106 10.2 10.3 99
Rawah 9069 9.9 6.8 146 11.1 9.6 116
Roach 9740 11.6 9.5 122 12.9 11.4 113
Windy Peak 7915 6.0 4.2 143 7.0 6.1 115
----- -----
Basin Index (%) 118 107
S. PLATTE
Crow Creek 8335 3.7 4.9 76 5.6 6.5 86
----- -----
Basin Index (%) 76 86
LITTLE SNAKE RIVER
Battle Mountain 7498 11.8 6.8 174 15.3 9.7 158
Divide Peak 8730 15.8 11.6 136 17.6 13.4 131
Elk River 8739 17.6 10.6 166 16.2 11.6 140
Elkhead Divide 8800 19.6 -M * 18.4 -M *
Little Snake River 8928 23.1 15.0 154 25.4 21.2 120
Old Battle 9860 23.5 18.4 128 24.2 20.4 119
Sage Creek Basin 7850 13.9 8.7 160 13.6 8.5 160
Sandstone RS 8152 15.2 7.8 195 16.7 11.2 149
Whiskey Park 9020 24.4 15.8 154 22.9 17.7 129
----- -----
Basin Index (%) 153 134
UPPER GREEN RIVER
Big Sandy Opening 9080 9.1 8.0 114 9.0 7.8 115
Blind Bull Sum 8650 13.2 14.3 92 9.5 11.4 83
East Rim Divide 7930 7.0 6.8 103 6.7 7.2 93
Elkhart Park G.S. 9400 7.5 7.4 101 6.7 7.8 86
Gros Ventre Summit 8750 7.4 7.8 95 7.0 7.7 91
Gunsight Pass 9820 7.9 8.0 99 7.8 8.6 91
Indian Creek 9425 16.4 13.4 122 14.0 12.4 113
Kendall R.S. 7740 7.0 7.3 96 7.3 8.5 86
Larsen Creek 9000 6.2 4.8 129 8.6 7.8 110
Loomis Park 8240 8.9 9.2 97 9.1 10.2 89
New Fork Lake 8340 6.6 6.7 99 -M 6.7 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 7.9 7.8 101 9.1 8.6 106
Spring Creek Divide 9000 14.7 14.2 104 15.6 14.4 108
Triple Peak 8500 14.1 13.2 107 14.4 15.2 95
----- -----
Basin Index (%) 104 98
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.5 5.0 170 8.7 7.4 118
Buck Pasture 9632 11.7 -M * 13.4 -M *
EF Blacks Fork GS 9360 9.4 6.0 157 7.2 6.5 111
Hams Fork 7840 9.1 7.0 130 8.7 7.0 124
Henrys Fork 10182 -M -M * 9.1 -M *
Hewinta 9500 7.6 5.2 146 9.7 8.3 117
Hickerson Park 9122 6.2 3.9 159 6.9 6.0 115
Hole-in-Rock 9168 5.6 4.0 140 6.7 6.2 108
Indian Creek 9425 16.4 13.4 122 14.0 12.4 113
Kelley R.S. 8180 12.1 8.6 141 12.7 10.7 119
Spirit Lk 10235 12.0 6.5 185 11.7 9.6 122
Steel Creek Park 10158 12.0 8.4 143 11.9 9.3 128
----- -----
Basin Index (%) 145 118
UPPER BEAR RIVER
Bear River RS 8777 7.8 5.5 142 9.5 7.2 132
Bug Lake 7987 15.7 9.6 164 12.9 11.0 117
Burts Miller Ranch 8000 6.1 3.6 169 9.5 5.1 186
Chalk Creek #1 9171 17.8 11.8 151 17.7 14.0 126
Giveout 6930 7.7 5.6 138 9.0 7.4 122
Hayden Fork 9130 11.8 8.0 148 15.8 12.0 132
Kelley R.S. 8180 12.1 8.6 141 12.7 10.7 119
Lily Lake 9133 10.4 7.2 144 10.6 9.4 113
Monte Cristo 8932 22.2 14.2 156 20.8 15.6 133
Salt River Summit 7640 10.6 7.4 143 10.6 9.3 114
Spring Creek Divide 9000 14.7 14.2 104 15.6 14.4 108
Trial Lake 9992 20.7 11.8 175 20.7 13.6 152
----- -----
Basin Index (%) 147 128
-----------------------------------------------------------------------------
-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.