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 FRIDAY: MARCH 10 , 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 14.9 15.5 96 16.7 17.4 96
Blind Bull Sum 8650 20.6 20.6 100 13.8 15.8 87
Cottonwood Creek 7670 20.5 19.0 108 21.6 21.4 101
East Rim Divide 7930 9.8 9.6 102 9.2 9.8 94
Grand Targhee 9260 37.0 34.6 107 22.3 26.6 84
Granite Creek 6770 13.8 15.2 91 11.8 16.3 72
Grassy Lake 7265 29.1 27.5 106 32.5 30.0 108
Gros Ventre Summit 8750 9.4 10.6 89 8.7 10.2 85
Gunsight Pass 9820 10.6 11.0 96 10.2 11.8 86
Lewis Lake Divide 7850 30.1 25.6 118 30.6 28.0 109
Loomis Park 8240 12.7 13.5 94 12.8 14.6 88
Phillips Bench 8200 24.4 22.2 110 24.8 23.0 108
Salt River Summit 7640 16.3 11.5 142 15.4 13.3 116
Snake River Station 6920 17.2 15.2 113 19.4 19.0 102
Somsen Ranch 6800 16.2 11.4 142 17.3 14.2 122
Spring Creek Divide 9000 -M 20.8 * -M 20.0 *
Thumb Divide 7980 16.5 13.5 122 15.4 14.8 104
Togwotee Pass 9580 18.6 20.4 91 17.3 21.6 80
Triple Peak 8500 20.4 20.8 98 20.8 22.0 95
Two Ocean Plateau 9240 25.6 24.3 105 20.3 22.5 90
Willow Creek 8080 30.2 25.8 117 28.6 28.1 102
Younts Peak 8350 14.0 13.0 108 11.3 12.4 91
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Basin Index (%) 107 97
MADISON HEADWATERS IN WYOMING
Black Bear 8170 35.8 32.2 111 32.8 32.0 102
Canyon 7870 12.4 -M * 14.4 -M *
Madison Plateau 7750 23.8 19.4 123 24.0 21.2 113
West Yellowstone 6700 13.6 9.7 140 16.1 12.4 130
Whiskey Creek 6800 17.0 13.8 123 21.0 17.0 124
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Basin Index (%) 120 114
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 15.6 19.0 82 14.5 17.5 83
Canyon 7870 12.4 -M * 14.4 -M *
Evening Star 9200 22.4 22.6 99 24.2 24.6 98
Fisher Creek 9100 28.7 27.8 103 29.4 27.5 107
Monument Peak 8850 17.9 17.6 102 20.0 18.0 111
Northeast Entrance 7350 8.7 9.3 94 10.9 11.4 96
Parker Peak 9400 19.7 18.4 107 18.8 17.3 109
Sylvan Lake 8420 16.5 16.9 98 19.4 19.3 101
Thumb Divide 7980 16.5 13.5 122 15.4 14.8 104
Two Ocean Plateau 9240 25.6 24.3 105 20.3 22.5 90
White Mill 8700 21.0 20.8 101 19.9 19.9 100
Wolverine 7650 12.0 10.5 114 11.1 10.7 104
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Basin Index (%) 102 100
WIND RIVER
Burroughs Creek 8750 9.1 -M * 9.1 -M *
Castle Creek 8400 5.2 6.9 75 5.8 7.4 78
Cold Springs 9630 6.9 6.3 110 8.3 7.4 112
Deer Park 9700 19.0 11.4 167 19.4 14.2 137
Hobbs Park 10100 12.4 11.2 111 11.7 10.0 117
Kirwin 9550 8.2 9.2 89 10.2 9.8 104
Little Warm 9370 8.5 8.6 99 9.6 10.2 94
South Pass 9040 15.4 12.3 125 15.0 12.6 119
St. Lawrence Alt 8620 5.7 -M * 7.7 -M *
Togwotee Pass 9580 18.6 20.4 91 17.3 21.6 80
Townsend Creek 8700 9.4 7.5 125 10.4 8.5 122
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Basin Index (%) 110 106
BIGHORN BASIN
Bald Mtn. 9380 16.0 16.0 100 13.0 13.4 97
Bear Trap Meadow 8200 7.8 5.6 139 7.9 6.6 120
Bone Springs Div 9350 12.3 13.6 90 10.1 12.7 80
Grave Springs 8550 8.7 7.2 121 9.2 7.6 121
Kirwin 9550 8.2 9.2 89 10.2 9.8 104
Marquette 8760 6.2 5.8 107 6.8 7.2 94
Middle Powder 7760 9.7 8.6 113 8.4 8.4 100
Owl Creek 8975 5.9 4.6 128 6.4 4.9 131
Powder River Pass 9480 9.7 9.2 105 11.7 10.2 115
Shell Creek 9580 11.7 12.4 94 12.0 11.3 106
Timber Creek 7950 4.5 4.2 107 5.0 6.0 83
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Basin Index (%) 104 103
SHOSHONE RIVER
Blackwater 9780 17.2 19.3 89 17.4 18.4 95
Evening Star 9200 22.4 22.6 99 24.2 24.6 98
Marquette 8760 6.2 5.8 107 6.8 7.2 94
Sylvan Lake 8420 16.5 16.9 98 19.4 19.3 101
Sylvan Road 7120 9.7 10.4 93 13.0 14.4 90
Younts Peak 8350 14.0 13.0 108 11.3 12.4 91
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Basin Index (%) 98 96
POWDER RIVER
Bear Trap Meadow 8200 7.8 5.6 139 7.9 6.6 120
Cloud Peak Reservoir 9860 12.1 12.2 99 11.8 11.0 107
Grave Springs 8550 8.7 7.2 121 9.2 7.6 121
Hansen Sawmill 8360 7.1 5.8 122 7.4 6.6 112
Middle Powder 7760 9.7 8.6 113 8.4 8.4 100
Powder River Pass 9480 9.7 9.2 105 11.7 10.2 115
Soldier Park 8720 6.7 5.8 116 6.6 7.6 87
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Basin Index (%) 114 109
TONGUE RIVER
Big Goose 7990 8.5 6.6 129 9.1 8.2 111
Bone Springs Div 9350 12.3 13.6 90 10.1 12.7 80
Burgess Junction 7880 10.7 9.0 119 12.2 9.6 127
Dome Lake 8880 9.4 9.5 99 10.0 9.9 101
Little Goose 8870 9.2 7.8 118 10.0 9.6 104
Sucker Creek 8880 11.7 10.4 112 13.9 11.5 121
Tie Creek 6870 8.1 5.0 162 11.2 8.8 127
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Basin Index (%) 113 109
BELLE FOURCHE
Blind Park 6890 8.4 6.8 124 9.7 9.0 108
Cole Canyon 5910 7.9 4.9 161 9.1 7.4 123
North Rapid Creek 6130 7.2 6.1 118 7.8 7.4 105
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Basin Index (%) 132 112
CHEYENNE RIVER BASIN
Blind Park 6890 8.4 6.8 124 9.7 9.0 108
North Rapid Creek 6130 7.2 6.1 118 7.8 7.4 105
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Basin Index (%) 121 107
UPPER N. PLATTE
Arapaho Ridge 10976 20.1 18.2 110 19.4 18.2 107
Blackhall Mtn 9839 32.0 23.7 135 31.5 23.5 134
Cinnabar Park 9707 -M 17.8 * 20.5 20.6 100
Columbine 9167 23.9 20.4 117 -M 20.4 *
Divide Peak 8730 24.2 16.6 146 23.2 18.0 129
Joe Wright 10158 19.8 18.0 110 21.9 21.8 100
Laprele Creek 8390 10.7 8.1 132 11.1 9.4 118
Med Bow 10512 34.4 -M * 30.0 -M *
Never Summer 10323 -M 16.8 * -M 14.3 *
North French Creek 10153 26.3 23.0 114 25.7 22.0 117
Old Battle 9860 33.9 25.7 132 30.4 28.4 107
Rawah 9069 12.1 9.6 126 13.6 13.0 105
Sage Creek Basin 7850 22.2 12.2 182 18.4 10.9 169
Sand Lake 10098 24.7 22.0 112 23.8 20.0 119
South Brush Creek 8495 13.5 10.3 131 12.6 11.2 112
Tower 10620 42.3 37.6 112 38.5 33.5 115
Webber Springs 9260 24.6 18.4 134 26.5 21.0 126
Whiskey Park 9020 34.0 23.2 147 30.7 23.4 131
Willow Creek Pass 9523 13.6 10.8 126 13.6 11.2 121
Zirkel 9338 27.6 25.2 110 29.3 26.4 111
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Basin Index (%) 126 118
SWEETWATER
Deer Park 9700 19.0 11.4 167 19.4 14.2 137
Larsen Creek 9000 9.5 10.1 94 12.0 11.1 108
South Pass 9040 15.4 12.3 125 15.0 12.6 119
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Basin Index (%) 130 122
LOWER N. PLATTE
Casper Mtn. 7920 11.9 10.8 110 11.8 10.8 109
Laprele Creek 8390 10.7 8.1 132 11.1 9.4 118
Reno Hill 8430 13.2 11.2 118 14.4 11.6 124
Windy Peak 7915 9.9 6.6 150 10.5 7.9 133
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Basin Index (%) 125 120
LARAMIE RIVER
Brooklyn Lake 10250 22.2 17.3 128 22.2 17.9 124
Cinnabar Park 9707 -M 17.8 * 20.5 20.6 100
Crow Creek 8335 4.8 6.4 75 7.5 8.2 91
Deadman Hill 10239 16.3 14.0 116 15.0 14.2 106
Rawah 9069 12.1 9.6 126 13.6 13.0 105
Roach 9740 15.8 12.8 123 17.6 15.4 114
Windy Peak 7915 9.9 6.6 150 10.5 7.9 133
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Basin Index (%) 122 110
S. PLATTE
Crow Creek 8335 4.8 6.4 75 7.5 8.2 91
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Basin Index (%) 75 91
LITTLE SNAKE RIVER
Battle Mountain 7498 15.5 10.8 144 19.5 12.8 152
Divide Peak 8730 24.2 16.6 146 23.2 18.0 129
Elk River 8739 24.3 16.8 145 23.1 16.0 144
Elkhead Divide 8800 26.8 -M * 25.9 -M *
Little Snake River 8928 31.8 23.0 138 34.5 27.4 126
Old Battle 9860 33.9 25.7 132 30.4 28.4 107
Sage Creek Basin 7850 22.2 12.2 182 18.4 10.9 169
Sandstone RS 8152 20.6 11.4 181 21.5 15.6 138
Whiskey Park 9020 34.0 23.2 147 30.7 23.4 131
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Basin Index (%) 148 132
UPPER GREEN RIVER
Big Sandy Opening 9080 12.6 11.0 115 12.6 10.6 119
Blind Bull Sum 8650 20.6 20.6 100 13.8 15.8 87
East Rim Divide 7930 9.8 9.6 102 9.2 9.8 94
Elkhart Park G.S. 9400 10.0 10.4 96 9.1 10.8 84
Gros Ventre Summit 8750 9.4 10.6 89 8.7 10.2 85
Gunsight Pass 9820 10.6 11.0 96 10.2 11.8 86
Indian Creek 9425 23.1 19.8 117 19.6 17.0 115
Kendall R.S. 7740 10.0 10.8 93 10.2 11.6 88
Larsen Creek 9000 9.5 10.1 94 12.0 11.1 108
Loomis Park 8240 12.7 13.5 94 12.8 14.6 88
New Fork Lake 8340 9.1 9.3 98 -M 9.2 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 12.0 11.5 104 13.0 12.0 108
Spring Creek Divide 9000 -M 20.8 * -M 20.0 *
Triple Peak 8500 20.4 20.8 98 20.8 22.0 95
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Basin Index (%) 100 97
LOWER GREEN RIVER
Blacks Fork Jct 8869 11.2 7.3 153 11.8 10.0 118
Buck Pasture 9632 16.4 -M * 17.7 -M *
EF Blacks Fork GS 9360 11.7 10.0 117 9.2 9.3 99
Hams Fork 7840 12.9 10.0 129 11.8 9.4 126
Henrys Fork 10182 -M -M * 12.2 -M *
Hewinta 9500 10.8 8.6 126 13.2 11.0 120
Hickerson Park 9122 8.8 6.6 133 9.5 8.6 110
Hole-in-Rock 9168 7.5 6.1 123 9.1 8.2 111
Indian Creek 9425 23.1 19.8 117 19.6 17.0 115
Kelley R.S. 8180 17.2 12.7 135 17.6 14.2 124
Spirit Lk 10235 16.4 9.9 166 15.7 13.6 115
Steel Creek Park 10158 16.3 12.4 131 16.0 13.0 123
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Basin Index (%) 131 117
UPPER BEAR RIVER
Bear River RS 8777 11.8 8.0 148 13.2 9.7 136
Bug Lake 7987 23.8 16.1 148 19.2 15.2 126
Burts Miller Ranch 8000 8.1 5.7 142 11.9 6.2 192
Chalk Creek #1 9171 25.4 19.2 132 24.0 19.0 126
Giveout 6930 12.3 8.5 145 12.7 10.2 125
Hayden Fork 9130 17.5 12.8 137 21.7 17.2 126
Kelley R.S. 8180 17.2 12.7 135 17.6 14.2 124
Lily Lake 9133 13.2 10.8 122 14.4 13.1 110
Monte Cristo 8932 31.4 22.8 138 28.8 21.6 133
Salt River Summit 7640 16.3 11.5 142 15.4 13.3 116
Spring Creek Divide 9000 -M 20.8 * -M 20.0 *
Trial Lake 9992 27.7 18.6 149 27.2 18.8 145
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Basin Index (%) 140 130
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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.
