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 31 , 2023
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Median Med
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7060 10.2 11.8 86 11.7 13.6 86
Blind Bull Sum 8650 13.5 14.8 91 9.9 11.7 85
Cottonwood Creek 7670 14.6 13.4 109 15.8 15.4 103
East Rim Divide 7930 7.4 6.8 109 6.9 7.3 95
Grand Targhee 9260 28.5 27.0 106 17.4 20.4 85
Granite Creek 6770 10.1 10.4 97 8.5 12.6 67
Grassy Lake 7265 18.1 20.2 90 21.9 23.0 95
Gros Ventre Summit 8750 6.9 8.0 86 7.1 7.8 91
Gunsight Pass 9820 8.1 8.4 96 7.8 8.8 89
Lewis Lake Divide 7850 21.0 19.4 108 22.9 21.6 106
Loomis Park 8240 9.2 9.8 94 9.5 10.6 90
Phillips Bench 8200 17.0 16.0 106 17.7 17.1 104
Salt River Summit 7640 10.8 7.6 142 10.4 9.6 108
Snake River Station 6920 11.4 11.4 100 13.3 15.2 88
Somsen Ranch 6800 11.3 8.2 138 12.7 11.0 115
Spring Creek Divide 9000 14.8 15.1 98 15.6 14.8 105
Thumb Divide 7980 12.5 9.8 128 11.9 11.5 103
Togwotee Pass 9580 14.0 14.6 96 13.5 15.8 85
Triple Peak 8500 14.4 14.1 102 14.3 15.7 91
Two Ocean Plateau 9240 18.9 18.4 103 15.0 16.4 91
Willow Creek 8080 21.2 16.9 125 20.9 20.7 101
Younts Peak 8350 9.6 9.0 107 8.6 9.2 93
----- -----
Basin Index (%) 104 95
MADISON HEADWATERS IN WYOMING
Black Bear 8170 26.1 22.6 115 25.7 23.4 110
Canyon 7870 8.8 -M * 10.6 -M *
Madison Plateau 7750 17.9 13.8 130 18.6 15.4 121
West Yellowstone 6700 10.0 6.9 145 12.8 9.2 139
Whiskey Creek 6800 12.6 9.2 137 16.0 12.3 130
----- -----
Basin Index (%) 127 121
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 10.7 14.6 73 9.6 12.8 75
Canyon 7870 8.8 -M * 10.6 -M *
Evening Star 9200 15.5 17.0 91 17.5 18.5 95
Fisher Creek 9100 21.0 21.2 99 21.7 20.4 106
Monument Peak 8850 12.5 13.2 95 14.9 14.3 104
Northeast Entrance 7350 5.9 6.4 92 8.4 8.4 100
Parker Peak 9400 14.2 13.8 103 14.5 13.2 110
Sylvan Lake 8420 12.1 12.4 98 15.2 15.0 101
Thumb Divide 7980 12.5 9.8 128 11.9 11.5 103
Two Ocean Plateau 9240 18.9 18.4 103 15.0 16.4 91
White Mill 8700 14.9 14.9 100 14.4 15.2 95
Wolverine 7650 7.5 8.0 94 8.0 8.4 95
----- -----
Basin Index (%) 97 98
WIND RIVER
Burroughs Creek 8750 6.6 -M * 7.4 -M *
Castle Creek 8400 4.2 4.6 91 4.6 6.0 77
Cold Springs 9630 5.4 4.8 112 6.7 6.0 112
Deer Park 9700 14.9 8.0 186 14.6 10.1 145
Hobbs Park 10100 10.0 7.8 128 9.2 7.2 128
Kirwin 9550 5.8 6.7 87 7.5 7.8 96
Little Warm 9370 6.4 6.2 103 7.1 7.8 91
South Pass 9040 11.7 8.0 146 10.8 9.2 117
St. Lawrence Alt 8620 4.7 -M * 6.2 -M *
Togwotee Pass 9580 14.0 14.6 96 13.5 15.8 85
Townsend Creek 8700 7.2 5.2 138 8.2 6.6 124
----- -----
Basin Index (%) 121 107
BIGHORN BASIN
Bald Mtn. 9380 11.5 11.0 105 9.4 9.8 96
Bear Trap Meadow 8200 5.5 3.8 145 5.7 5.2 110
Bone Springs Div 9350 7.3 9.8 74 6.8 9.2 74
Grave Springs 8550 6.6 4.7 140 7.2 5.6 129
Kirwin 9550 5.8 6.7 87 7.5 7.8 96
Marquette 8760 4.8 4.2 114 5.1 5.7 89
Middle Powder 7760 7.3 6.0 122 6.3 6.0 105
Owl Creek 8975 4.7 3.2 147 5.0 3.8 132
Powder River Pass 9480 6.5 6.8 96 7.9 8.2 96
Shell Creek 9580 7.6 9.2 83 8.2 8.5 96
Timber Creek 7950 3.6 2.8 129 3.9 4.8 81
----- -----
Basin Index (%) 104 98
SHOSHONE RIVER
Blackwater 9780 12.2 14.6 84 12.0 14.0 86
Evening Star 9200 15.5 17.0 91 17.5 18.5 95
Marquette 8760 4.8 4.2 114 5.1 5.7 89
Sylvan Lake 8420 12.1 12.4 98 15.2 15.0 101
Sylvan Road 7120 6.5 8.0 81 9.5 11.6 82
Younts Peak 8350 9.6 9.0 107 8.6 9.2 93
----- -----
Basin Index (%) 93 92
POWDER RIVER
Bear Trap Meadow 8200 5.5 3.8 145 5.7 5.2 110
Cloud Peak Reservoir 9860 9.0 8.7 103 8.7 8.1 107
Grave Springs 8550 6.6 4.7 140 7.2 5.6 129
Hansen Sawmill 8360 4.6 4.2 110 5.0 5.2 96
Middle Powder 7760 7.3 6.0 122 6.3 6.0 105
Powder River Pass 9480 6.5 6.8 96 7.9 8.2 96
Soldier Park 8720 2.8 3.6 78 4.4 5.6 79
----- -----
Basin Index (%) 112 103
TONGUE RIVER
Big Goose 7990 6.0 4.8 125 6.9 6.0 115
Bone Springs Div 9350 7.3 9.8 74 6.8 9.2 74
Burgess Junction 7880 7.9 6.5 122 9.4 7.4 127
Dome Lake 8880 5.4 6.6 82 7.4 7.6 97
Little Goose 8870 6.7 5.8 116 7.6 7.0 109
Sucker Creek 8880 8.5 7.5 113 10.5 8.3 127
Tie Creek 6870 5.9 3.4 174 8.7 6.4 136
----- -----
Basin Index (%) 107 110
BELLE FOURCHE
Blind Park 6890 5.4 4.6 117 6.4 6.4 100
Cole Canyon 5910 4.3 3.2 134 -M 5.4 *
North Rapid Creek 6130 4.4 4.6 96 -M 5.0 *
----- -----
Basin Index (%) 114 100*
CHEYENNE RIVER BASIN
Blind Park 6890 5.4 4.6 117 6.4 6.4 100
North Rapid Creek 6130 4.4 4.6 96 -M 5.0 *
----- -----
Basin Index (%) 107 100
UPPER N. PLATTE
Arapaho Ridge 10976 16.8 14.0 120 16.5 13.8 120
Blackhall Mtn 9839 23.6 18.0 131 23.7 18.8 126
Cinnabar Park 9707 -M 13.0 * 15.5 15.2 102
Columbine 9167 18.9 14.0 135 17.8 15.0 119
Divide Peak 8730 16.8 12.2 138 18.3 13.8 133
Joe Wright 10158 16.1 11.6 139 18.6 15.2 122
Laprele Creek 8390 7.6 5.3 143 7.9 6.8 116
Med Bow 10512 24.8 -M * 22.6 -M *
Never Summer 10323 17.3 11.4 152 12.0 10.5 114
North French Creek 10153 19.5 16.6 117 19.4 16.5 118
Old Battle 9860 25.1 18.9 133 25.4 21.9 116
Rawah 9069 10.4 6.6 158 11.8 9.7 122
Sage Creek Basin 7850 14.7 9.2 160 14.2 8.7 163
Sand Lake 10098 17.2 16.4 105 17.1 15.0 114
South Brush Creek 8495 10.3 7.2 143 9.8 8.6 114
Tower 10620 35.9 25.8 139 31.6 25.3 125
Webber Springs 9260 17.9 13.1 137 19.2 16.1 119
Whiskey Park 9020 26.2 16.2 162 24.2 17.8 136
Willow Creek Pass 9523 11.5 7.8 147 11.7 8.4 139
Zirkel 9338 19.9 16.8 118 22.2 19.2 116
----- -----
Basin Index (%) 135 122
SWEETWATER
Deer Park 9700 14.9 8.0 186 14.6 10.1 145
Larsen Creek 9000 6.4 4.9 131 8.8 7.8 113
South Pass 9040 11.7 8.0 146 10.8 9.2 117
----- -----
Basin Index (%) 158 126
LOWER N. PLATTE
Casper Mtn. 7920 9.0 7.5 120 8.8 8.4 105
Laprele Creek 8390 7.6 5.3 143 7.9 6.8 116
Reno Hill 8430 9.5 8.1 117 11.0 8.4 131
Windy Peak 7915 -M 4.4 * -M 6.3 *
----- -----
Basin Index (%) 125 117
LARAMIE RIVER
Brooklyn Lake 10250 15.5 12.5 124 15.9 13.2 120
Cinnabar Park 9707 -M 13.0 * 15.5 15.2 102
Crow Creek 8335 3.9 5.1 76 5.7 6.5 88
Deadman Hill 10239 11.9 10.7 111 11.0 10.6 104
Rawah 9069 10.4 6.6 158 11.8 9.7 122
Roach 9740 12.4 9.6 129 13.9 11.6 120
Windy Peak 7915 -M 4.4 * -M 6.3 *
----- -----
Basin Index (%) 122 110
S. PLATTE
Crow Creek 8335 3.9 5.1 76 5.7 6.5 88
----- -----
Basin Index (%) 76 88
LITTLE SNAKE RIVER
Battle Mountain 7498 12.1 7.2 168 15.8 10.0 158
Divide Peak 8730 16.8 12.2 138 18.3 13.8 133
Elk River 8739 18.6 11.1 168 17.3 11.8 147
Elkhead Divide 8800 20.7 -M * -M -M *
Little Snake River 8928 24.6 16.2 152 28.4 22.2 128
Old Battle 9860 25.1 18.9 133 25.4 21.9 116
Sage Creek Basin 7850 14.7 9.2 160 14.2 8.7 163
Sandstone RS 8152 16.1 8.0 201 17.3 11.3 153
Whiskey Park 9020 26.2 16.2 162 24.2 17.8 136
----- -----
Basin Index (%) 156 137
UPPER GREEN RIVER
Big Sandy Opening 9080 9.0 8.0 112 8.8 8.0 110
Blind Bull Sum 8650 13.5 14.8 91 9.9 11.7 85
East Rim Divide 7930 7.4 6.8 109 6.9 7.3 95
Elkhart Park G.S. 9400 7.7 7.5 103 6.8 7.8 87
Gros Ventre Summit 8750 6.9 8.0 86 7.1 7.8 91
Gunsight Pass 9820 8.1 8.4 96 7.8 8.8 89
Indian Creek 9425 17.0 13.6 125 14.3 12.6 113
Kendall R.S. 7740 7.0 7.5 93 7.6 8.8 86
Larsen Creek 9000 6.4 4.9 131 8.8 7.8 113
Loomis Park 8240 9.2 9.8 94 9.5 10.6 90
New Fork Lake 8340 6.9 6.8 101 -M 6.7 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 8.1 8.1 100 9.2 8.8 105
Spring Creek Divide 9000 14.8 15.1 98 15.6 14.8 105
Triple Peak 8500 14.4 14.1 102 14.3 15.7 91
----- -----
Basin Index (%) 102 97
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.4 5.0 168 8.7 7.6 114
Buck Pasture 9632 11.7 -M * 13.7 -M *
EF Blacks Fork GS 9360 9.2 6.3 146 6.9 6.8 101
Hams Fork 7840 9.3 7.0 133 9.0 7.0 129
Henrys Fork 10182 -M -M * 9.2 -M *
Hewinta 9500 7.7 5.4 143 9.5 8.6 110
Hickerson Park 9122 6.2 4.2 148 7.0 6.4 109
Hole-in-Rock 9168 5.5 4.1 134 6.4 6.3 102
Indian Creek 9425 17.0 13.6 125 14.3 12.6 113
Kelley R.S. 8180 11.9 8.8 135 12.7 10.8 118
Spirit Lk 10235 11.6 6.5 178 11.5 9.8 117
Steel Creek Park 10158 12.2 8.6 142 12.0 9.6 125
----- -----
Basin Index (%) 142 115
UPPER BEAR RIVER
Bear River RS 8777 8.0 5.4 148 9.3 7.4 126
Bug Lake 7987 16.4 9.9 166 13.7 11.6 118
Burts Miller Ranch 8000 5.8 3.8 153 9.3 5.1 182
Chalk Creek #1 9171 18.1 12.1 150 17.4 14.8 118
Giveout 6930 7.6 5.9 129 8.8 7.6 116
Hayden Fork 9130 12.1 8.4 144 16.1 12.4 130
Kelley R.S. 8180 11.9 8.8 135 12.7 10.8 118
Lily Lake 9133 10.8 7.4 146 11.0 9.7 113
Monte Cristo 8932 22.8 14.4 158 21.4 15.8 135
Salt River Summit 7640 10.8 7.6 142 10.4 9.6 108
Spring Creek Divide 9000 14.8 15.1 98 15.6 14.8 105
Trial Lake 9992 21.1 12.3 172 21.0 14.0 150
----- -----
Basin Index (%) 144 125
-----------------------------------------------------------------------------
-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.
