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: MARCH 4 , 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 14.4 15.1 95 16.3 17.2 95
Blind Bull Sum 8650 19.4 19.7 98 13.0 15.4 84
Cottonwood Creek 7670 19.8 18.0 110 20.9 19.8 106
East Rim Divide 7930 9.2 9.1 101 8.7 9.4 93
Grand Targhee 9260 36.1 33.6 107 22.0 26.4 83
Granite Creek 6770 13.0 14.8 88 10.9 16.0 68
Grassy Lake 7265 27.8 26.6 105 31.4 28.7 109
Gros Ventre Summit 8750 9.0 9.9 91 8.2 9.6 85
Gunsight Pass 9820 10.1 10.6 95 9.7 11.2 87
Lewis Lake Divide 7850 28.5 24.9 114 30.6 26.8 114
Loomis Park 8240 12.1 13.1 92 12.3 13.9 88
Phillips Bench 8200 23.3 21.4 109 23.6 22.2 106
Salt River Summit 7640 15.2 10.9 139 14.5 12.8 113
Snake River Station 6920 16.5 14.8 111 18.8 17.8 106
Somsen Ranch 6800 15.5 10.9 142 16.6 13.7 121
Spring Creek Divide 9000 20.7 19.7 105 -M 19.3 *
Thumb Divide 7980 15.8 13.2 120 15.0 14.2 106
Togwotee Pass 9580 18.0 19.3 93 16.7 20.2 83
Triple Peak 8500 19.5 19.6 99 19.9 20.7 96
Two Ocean Plateau 9240 24.9 23.1 108 20.1 20.8 97
Willow Creek 8080 28.6 24.2 118 27.2 26.3 103
Younts Peak 8350 13.6 12.0 113 11.0 11.8 93
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Basin Index (%) 107 98
MADISON HEADWATERS IN WYOMING
Black Bear 8170 33.7 31.0 109 32.2 30.8 105
Canyon 7870 11.5 -M * 13.5 -M *
Madison Plateau 7750 22.2 18.2 122 22.6 20.2 112
West Yellowstone 6700 12.5 9.1 137 15.2 11.4 133
Whiskey Creek 6800 15.7 12.2 129 20.0 15.9 126
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Basin Index (%) 119 115
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 15.0 18.2 82 13.8 16.8 82
Canyon 7870 11.5 -M * 13.5 -M *
Evening Star 9200 21.7 22.2 98 23.5 24.0 98
Fisher Creek 9100 27.6 26.8 103 28.2 26.0 108
Monument Peak 8850 17.0 16.8 101 19.3 17.4 111
Northeast Entrance 7350 8.1 9.0 90 10.3 11.0 94
Parker Peak 9400 19.0 17.6 108 18.5 16.4 113
Sylvan Lake 8420 15.9 16.0 99 18.7 18.7 100
Thumb Divide 7980 15.8 13.2 120 15.0 14.2 106
Two Ocean Plateau 9240 24.9 23.1 108 20.1 20.8 97
White Mill 8700 19.9 19.8 101 18.9 18.8 101
Wolverine 7650 11.7 10.2 115 10.9 10.2 107
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Basin Index (%) 102 101
WIND RIVER
Burroughs Creek 8750 8.6 -M * 8.9 -M *
Castle Creek 8400 5.0 6.4 78 5.5 7.1 77
Cold Springs 9630 6.7 5.8 116 8.1 7.0 116
Deer Park 9700 18.1 10.5 172 18.5 13.1 141
Hobbs Park 10100 11.9 10.6 112 11.2 9.2 122
Kirwin 9550 7.8 8.7 90 9.8 9.2 107
Little Warm 9370 8.1 8.1 100 9.1 9.6 95
South Pass 9040 14.8 11.6 128 14.1 12.1 117
St. Lawrence Alt 8620 5.4 -M * 7.4 -M *
Togwotee Pass 9580 18.0 19.3 93 16.7 20.2 83
Townsend Creek 8700 9.1 6.9 132 10.0 8.2 122
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Basin Index (%) 113 108
BIGHORN BASIN
Bald Mtn. 9380 15.5 15.1 103 12.6 13.0 97
Bear Trap Meadow 8200 7.5 5.4 139 7.6 6.4 119
Bone Springs Div 9350 11.8 13.0 91 9.7 12.4 78
Grave Springs 8550 8.4 6.8 124 8.9 6.9 129
Kirwin 9550 7.8 8.7 90 9.8 9.2 107
Marquette 8760 6.1 5.4 113 6.7 7.0 96
Middle Powder 7760 9.6 7.9 122 8.3 7.4 112
Owl Creek 8975 5.7 4.4 130 6.2 4.8 129
Powder River Pass 9480 9.3 8.8 106 11.2 9.7 115
Shell Creek 9580 11.3 12.0 94 11.7 10.9 107
Timber Creek 7950 4.4 4.0 110 4.8 5.8 83
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Basin Index (%) 106 104
SHOSHONE RIVER
Blackwater 9780 16.5 17.8 93 16.7 17.4 96
Evening Star 9200 21.7 22.2 98 23.5 24.0 98
Marquette 8760 6.1 5.4 113 6.7 7.0 96
Sylvan Lake 8420 15.9 16.0 99 18.7 18.7 100
Sylvan Road 7120 9.4 10.2 92 12.6 14.2 89
Younts Peak 8350 13.6 12.0 113 11.0 11.8 93
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Basin Index (%) 100 96
POWDER RIVER
Bear Trap Meadow 8200 7.5 5.4 139 7.6 6.4 119
Cloud Peak Reservoir 9860 11.7 11.8 99 11.4 10.4 110
Grave Springs 8550 8.4 6.8 124 8.9 6.9 129
Hansen Sawmill 8360 6.8 5.4 126 7.0 6.2 113
Middle Powder 7760 9.6 7.9 122 8.3 7.4 112
Powder River Pass 9480 9.3 8.8 106 11.2 9.7 115
Soldier Park 8720 6.2 5.3 117 6.2 7.2 86
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Basin Index (%) 116 112
TONGUE RIVER
Big Goose 7990 8.3 6.2 134 8.9 8.0 111
Bone Springs Div 9350 11.8 13.0 91 9.7 12.4 78
Burgess Junction 7880 10.4 8.4 124 11.7 9.4 124
Dome Lake 8880 9.2 9.0 102 9.8 9.6 102
Little Goose 8870 9.0 7.6 118 9.9 9.4 105
Sucker Creek 8880 11.4 9.9 115 13.6 10.8 126
Tie Creek 6870 7.9 4.5 176 11.0 8.6 128
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Basin Index (%) 116 109
BELLE FOURCHE
Blind Park 6890 7.8 6.7 116 9.2 8.8 105
Cole Canyon 5910 7.4 4.7 157 8.5 7.4 115
North Rapid Creek 6130 6.8 6.0 113 7.3 7.2 101
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Basin Index (%) 126 107
CHEYENNE RIVER BASIN
Blind Park 6890 7.8 6.7 116 9.2 8.8 105
North Rapid Creek 6130 6.8 6.0 113 7.3 7.2 101
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Basin Index (%) 115 103
UPPER N. PLATTE
Arapaho Ridge 10976 19.9 17.6 113 19.3 17.6 110
Blackhall Mtn 9839 30.3 22.7 133 29.9 23.0 130
Cinnabar Park 9707 -M 17.2 * 19.8 19.8 100
Columbine 9167 23.1 19.4 119 21.4 19.4 110
Divide Peak 8730 23.0 15.4 149 22.8 17.2 133
Joe Wright 10158 19.1 16.9 113 21.4 20.9 102
Laprele Creek 8390 10.2 7.4 138 10.7 8.6 124
Med Bow 10512 32.4 -M * 28.6 -M *
Never Summer 10323 -M 16.4 * -M 14.0 *
North French Creek 10153 24.7 22.4 110 24.5 21.4 114
Old Battle 9860 32.6 24.8 131 -M 27.4 *
Rawah 9069 11.8 9.3 127 13.3 12.7 105
Sage Creek Basin 7850 21.5 11.5 187 17.9 10.8 166
Sand Lake 10098 23.0 21.6 106 22.2 18.6 119
South Brush Creek 8495 12.7 9.8 130 12.0 11.0 109
Tower 10620 41.8 35.6 117 38.3 32.8 117
Webber Springs 9260 23.5 17.0 138 25.4 20.6 123
Whiskey Park 9020 32.3 22.0 147 29.6 22.2 133
Willow Creek Pass 9523 13.4 10.6 126 13.5 10.7 126
Zirkel 9338 25.9 24.2 107 27.9 25.7 109
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Basin Index (%) 126 118
SWEETWATER
Deer Park 9700 18.1 10.5 172 18.5 13.1 141
Larsen Creek 9000 8.4 9.6 88 11.2 11.0 102
South Pass 9040 14.8 11.6 128 14.1 12.1 117
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Basin Index (%) 130 121
LOWER N. PLATTE
Casper Mtn. 7920 11.7 9.8 119 11.5 10.2 113
Laprele Creek 8390 10.2 7.4 138 10.7 8.6 124
Reno Hill 8430 12.8 10.6 121 14.2 10.8 131
Windy Peak 7915 9.2 6.2 148 9.9 7.5 132
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Basin Index (%) 129 125
LARAMIE RIVER
Brooklyn Lake 10250 21.0 17.2 122 21.1 17.3 122
Cinnabar Park 9707 -M 17.2 * 19.8 19.8 100
Crow Creek 8335 4.6 6.0 77 7.2 8.0 90
Deadman Hill 10239 15.4 13.6 113 14.2 13.8 103
Rawah 9069 11.8 9.3 127 13.3 12.7 105
Roach 9740 15.2 12.5 122 17.1 14.8 116
Windy Peak 7915 9.2 6.2 148 9.9 7.5 132
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Basin Index (%) 119 109
S. PLATTE
Crow Creek 8335 4.6 6.0 77 7.2 8.0 90
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Basin Index (%) 77 90
LITTLE SNAKE RIVER
Battle Mountain 7498 14.7 10.5 140 18.7 12.4 151
Divide Peak 8730 23.0 15.4 149 22.8 17.2 133
Elk River 8739 22.9 15.8 145 22.1 15.6 142
Elkhead Divide 8800 25.6 -M * 25.0 -M *
Little Snake River 8928 30.6 22.4 137 32.8 27.2 121
Old Battle 9860 32.6 24.8 131 -M 27.4 *
Sage Creek Basin 7850 21.5 11.5 187 17.9 10.8 166
Sandstone RS 8152 19.6 10.5 187 20.9 15.0 139
Whiskey Park 9020 32.3 22.0 147 29.6 22.2 133
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Basin Index (%) 148 137
UPPER GREEN RIVER
Big Sandy Opening 9080 11.5 10.3 112 11.6 10.2 114
Blind Bull Sum 8650 19.4 19.7 98 13.0 15.4 84
East Rim Divide 7930 9.2 9.1 101 8.7 9.4 93
Elkhart Park G.S. 9400 9.3 9.8 95 8.5 10.2 83
Gros Ventre Summit 8750 9.0 9.9 91 8.2 9.6 85
Gunsight Pass 9820 10.1 10.6 95 9.7 11.2 87
Indian Creek 9425 21.4 19.0 113 18.3 16.2 113
Kendall R.S. 7740 9.4 10.0 94 9.8 10.8 91
Larsen Creek 9000 8.4 9.6 88 11.2 11.0 102
Loomis Park 8240 12.1 13.1 92 12.3 13.9 88
New Fork Lake 8340 8.7 8.7 100 -M 8.4 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 11.0 10.8 102 12.2 11.4 107
Spring Creek Divide 9000 20.7 19.7 105 -M 19.3 *
Triple Peak 8500 19.5 19.6 99 19.9 20.7 96
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Basin Index (%) 100 96
LOWER GREEN RIVER
Blacks Fork Jct 8869 10.0 6.8 147 10.6 9.8 108
Buck Pasture 9632 14.5 -M * 16.4 -M *
EF Blacks Fork GS 9360 10.8 9.4 115 8.2 8.8 93
Hams Fork 7840 11.7 9.4 124 10.8 9.0 120
Henrys Fork 10182 -M -M * 11.5 -M *
Hewinta 9500 9.8 8.4 117 11.8 10.7 110
Hickerson Park 9122 7.6 6.4 119 8.6 8.2 105
Hole-in-Rock 9168 6.5 5.8 112 8.1 7.6 107
Indian Creek 9425 21.4 19.0 113 18.3 16.2 113
Kelley R.S. 8180 16.0 12.2 131 16.5 13.6 121
Spirit Lk 10235 14.7 9.3 158 14.5 12.8 113
Steel Creek Park 10158 15.0 11.9 126 14.7 12.9 114
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Basin Index (%) 125 111
UPPER BEAR RIVER
Bear River RS 8777 10.3 7.9 130 11.7 9.4 124
Bug Lake 7987 22.0 15.4 143 17.8 14.6 122
Burts Miller Ranch 8000 7.0 5.5 127 10.9 5.8 188
Chalk Creek #1 9171 23.2 18.2 127 22.4 18.1 124
Giveout 6930 11.5 8.3 139 12.0 10.0 120
Hayden Fork 9130 15.3 12.0 128 19.7 16.4 120
Kelley R.S. 8180 16.0 12.2 131 16.5 13.6 121
Lily Lake 9133 11.8 10.4 113 12.9 12.5 103
Monte Cristo 8932 28.6 21.0 136 26.8 20.4 131
Salt River Summit 7640 15.2 10.9 139 14.5 12.8 113
Spring Creek Divide 9000 20.7 19.7 105 -M 19.3 *
Trial Lake 9992 25.6 17.8 144 25.3 18.0 141
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Basin Index (%) 130 126
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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.
