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 MONDAY: FEBRUARY 24 , 2020
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
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WYOMING
SNAKE RIVER
Base Camp 7060 13.2 13.1 101 13.7 16.8 82
Black Bear 8170 26.2 28.5 92 24.5 29.9 82
Blind Bull Sum 8650 20.8 17.4 120 12.2 15.5 79
Cottonwood Creek 7670 22.2 16.1 138 23.2 18.9 123
East Rim Divide 7930 10.1 7.7 131 8.1 9.2 88
Grand Targhee 9260 33.2 28.6 116 23.1 24.1 96
Granite Creek 6770 13.7 13.2 104 13.4 16.0 84
Grassy Lake 7265 25.6 25.2 102 25.7 28.8 89
Gros Ventre Summit 8750 9.0 9.4 96 9.0 9.8 92
Gunsight Pass 9820 10.3 10.2 101 10.3 10.5 98
Lewis Lake Divide 7850 20.0 24.9 80 23.2 28.1 83
Phillips Bench 8200 22.6 19.1 118 21.9 22.1 99
Salt River Summit 7640 12.5 10.3 121 12.4 13.0 95
Snake River Station 6920 13.7 13.8 99 16.2 18.2 89
Spring Creek Divide 9000 21.5 17.6 122 20.4 18.7 109
Thumb Divide 7980 11.2 11.5 97 11.3 14.2 80
Togwotee Pass 9580 21.3 17.2 124 20.3 18.8 108
Two Ocean Plateau 9240 22.7 21.0 108 17.8 21.0 85
Willow Creek 8080 28.6 21.5 133 28.1 26.0 108
Younts Peak 8350 13.7 11.4 120 11.6 12.3 94
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Basin Index (%) 110 93
MADISON-GALLATIN
Black Bear 8170 26.2 28.5 92 24.5 29.9 82
Canyon 7870 10.8 10.2 106 11.0 12.7 87
Madison Plateau 7750 16.2 17.3 94 14.0 20.5 68
West Yellowstone 6700 8.8 8.5 104 7.4 11.3 65
Whiskey Creek 6800 11.6 11.6 100 13.4 15.8 85
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Basin Index (%) 97 78
YELLOWSTONE
Beartooth Lake 9360 17.7 16.0 111 16.2 15.2 107
Burnt Mtn 5880 4.9 3.9 126 10.2 9.1 112
Canyon 7870 10.8 10.2 106 11.0 12.7 87
Cole Creek 7850 13.7 9.2 149 10.5 8.8 119
Evening Star 9200 21.8 18.7 117 23.6 21.5 110
Fisher Creek 9100 24.6 25.0 98 25.3 24.8 102
Northeast Entrance 7350 8.7 7.7 113 9.8 9.6 102
Parker Peak 9400 20.3 15.4 132 18.6 13.6 137
Sylvan Lake 8420 16.4 15.4 106 18.2 17.4 105
Thumb Divide 7980 11.2 11.5 97 11.3 14.2 80
Two Ocean Plateau 9240 22.7 21.0 108 17.8 21.0 85
White Mill 8700 20.1 17.8 113 16.5 18.5 89
Wolverine 7650 11.3 8.4 135 10.8 9.7 111
Younts Peak 8350 13.7 11.4 120 11.6 12.3 94
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Basin Index (%) 114 101
WIND RIVER
Burroughs Creek 8750 9.6 -M * 10.8 -M *
Castle Creek 8400 4.3 -M * 5.1 -M *
Cold Springs 9630 6.2 5.4 115 5.9 7.2 82
Deer Park 9700 9.5 10.5 90 8.8 14.5 61
Hobbs Park 10100 9.9 9.2 108 8.5 9.1 93
Kirwin 9550 8.9 6.7 133 7.7 8.5 91
Little Warm 9370 9.0 7.7 117 7.3 9.5 77
Owl Creek 8975 4.9 3.7 132 5.3 4.2 126
South Pass 9040 8.6 10.9 79 7.9 13.0 61
St. Lawrence Alt 8620 4.0 5.0 80 5.3 6.2 85
Togwotee Pass 9580 21.3 17.2 124 20.3 18.8 108
Townsend Creek 8700 7.1 6.2 115 7.3 8.4 87
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Basin Index (%) 108 85
BIGHORN BASIN
Bald Mtn. 9380 17.5 14.1 124 13.9 12.6 110
Bear Trap Meadow 8200 7.8 4.1 190 8.1 5.9 137
Bone Springs Div 9350 13.6 11.4 119 11.5 11.3 102
Grave Springs 8550 8.7 6.3 138 9.2 7.5 123
Kirwin 9550 8.9 6.7 133 7.7 8.5 91
Marquette 8760 5.5 -M * 6.8 -M *
Middle Powder 7760 10.3 7.6 136 10.5 8.4 125
Owl Creek 8975 4.9 3.7 132 5.3 4.2 126
Powder River Pass 9480 10.1 7.6 133 10.2 9.2 111
Shell Creek 9580 11.9 10.9 109 11.5 10.2 113
Timber Creek 7950 4.8 3.1 155 5.4 5.0 108
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Basin Index (%) 130 113
SHOSHONE RIVER
Blackwater 9780 17.3 16.7 104 17.4 15.6 112
Evening Star 9200 21.8 18.7 117 23.6 21.5 110
Marquette 8760 5.5 -M * 6.8 -M *
Sylvan Lake 8420 16.4 15.4 106 18.2 17.4 105
Sylvan Road 7120 10.0 9.0 111 14.1 13.6 104
Younts Peak 8350 13.7 11.4 120 11.6 12.3 94
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Basin Index (%) 111 106
POWDER RIVER
Bear Trap Meadow 8200 7.8 4.1 190 8.1 5.9 137
Cloud Peak Reservoir 9860 10.8 10.1 107 10.6 9.2 115
Grave Springs 8550 8.7 6.3 138 9.2 7.5 123
Hansen Sawmill 8360 5.7 4.5 127 6.8 5.8 117
Middle Powder 7760 10.3 7.6 136 10.5 8.4 125
Powder River Pass 9480 10.1 7.6 133 10.2 9.2 111
Soldier Park 8720 4.3 -M * 6.9 -M *
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Basin Index (%) 133 120
TONGUE RIVER
Big Goose 7990 7.0 6.0 117 8.0 7.6 105
Bone Springs Div 9350 13.6 11.4 119 11.5 11.3 102
Burgess Junction 7880 9.0 7.9 114 10.2 8.7 117
Dome Lake 8880 9.7 8.3 117 7.8 9.7 80
Little Goose 8870 8.2 -M * 6.5 -M *
Sucker Creek 8880 11.0 8.5 129 10.2 10.1 101
Tie Creek 6870 7.2 4.2 171 10.8 8.0 135
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Basin Index (%) 124 106
BELLE FOURCHE
Blind Park 6890 6.3 6.1 103 6.7 9.0 74
Cole Canyon 5910 1.8 4.8 38 -M 6.9 *
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Basin Index (%) 74 74
CHEYENNE RIVER BASIN
Blind Park 6890 6.3 6.1 103 6.7 9.0 74
North Rapid Creek 6130 5.9 5.7 104 6.7 7.3 92
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Basin Index (%) 103 82
UPPER N. PLATTE
Arapaho Ridge 10960 18.2 15.8 115 17.5 17.0 103
Blackhall Mtn 9820 23.8 -M * 23.2 -M *
Columbine 9160 26.2 19.0 138 23.6 19.6 120
Divide Peak 8880 17.5 15.2 115 18.2 16.4 111
Joe Wright 10120 17.0 15.7 108 21.5 19.3 111
Laprele Creek 8375 9.7 7.4 131 10.0 9.0 111
Med Bow 10500 36.1 -M * 29.4 -M *
Never Summer 10280 16.1 15.4 105 11.8 -M *
North French Creek 10130 27.8 20.2 138 26.8 20.3 132
Old Battle 10000 25.1 23.3 108 23.4 27.1 86
Rawah 9020 10.6 8.2 129 12.0 10.3 117
Sage Creek Basin 7850 13.2 10.4 127 10.6 11.4 93
Sand Lake 10050 23.7 20.3 117 21.9 18.3 120
South Brush Creek 8440 11.2 9.7 115 11.3 11.3 100
Tower 10500 37.8 35.2 107 32.2 30.9 104
Webber Springs 9250 17.5 18.1 97 19.1 20.4 94
Whiskey Park 8950 28.1 20.5 137 26.7 21.7 123
Willow Creek Pass 9540 11.0 9.1 121 10.3 10.0 103
Zirkel 9340 23.9 22.4 107 25.9 22.6 115
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Basin Index (%) 117 109
SWEETWATER
Deer Park 9700 9.5 10.5 90 8.8 14.5 61
Larsen Creek 9000 -M 9.1 * 5.9 -M *
South Pass 9040 8.6 10.9 79 7.9 13.0 61
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Basin Index (%) 85 61
LOWER N. PLATTE
Casper Mtn. 7900 13.0 9.7 134 8.9 10.7 83
Laprele Creek 8375 9.7 7.4 131 10.0 9.0 111
Reno Hill 8400 13.3 9.5 140 13.7 10.7 128
Windy Peak 7900 7.9 5.6 141 6.7 7.5 89
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Basin Index (%) 136 104
LARAMIE RIVER
Brooklyn Lake 10240 22.5 14.6 154 21.7 15.5 140
Cinnabar Park 9574 20.4 16.5 124 21.8 19.1 114
Crow Creek 8330 7.1 6.6 108 9.0 7.6 118
Deadman Hill 10220 14.8 12.1 122 12.9 12.3 105
Rawah 9020 10.6 8.2 129 12.0 10.3 117
Roach 9700 11.9 12.1 98 11.7 14.2 82
Windy Peak 7900 7.9 5.6 141 6.7 7.5 89
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Basin Index (%) 126 111
S. PLATTE
Black Mountain 8920 8.9 -M * 10.6 -M *
Crow Creek 8330 7.1 6.6 108 9.0 7.6 118
Deadman Hill 10220 14.8 12.1 122 12.9 12.3 105
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Basin Index (%) 117 110
LITTLE SNAKE RIVER
Battle Mountain 7440 12.2 9.4 130 12.4 11.8 105
Divide Peak 8880 17.5 15.2 115 18.2 16.4 111
Elk River 8700 17.8 14.6 122 15.0 15.5 97
Little Snake River 8915 23.0 19.3 119 27.3 24.3 112
Old Battle 10000 25.1 23.3 108 23.4 27.1 86
Sage Creek Basin 7850 13.2 10.4 127 10.6 11.4 93
Sandstone RS 8150 14.2 10.3 138 13.4 14.6 92
Whiskey Park 8950 28.1 20.5 137 26.7 21.7 123
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Basin Index (%) 123 103
UPPER GREEN RIVER
Big Sandy Opening 9080 7.4 9.6 77 6.3 10.1 62
Blind Bull Sum 8650 20.8 17.4 120 12.2 15.5 79
East Rim Divide 7930 10.1 7.7 131 8.1 9.2 88
Elkhart Park G.S. 9400 8.7 9.1 96 8.2 10.1 81
Gros Ventre Summit 8750 9.0 9.4 96 9.0 9.8 92
Gunsight Pass 9820 10.3 10.2 101 10.3 10.5 98
Indian Creek 9425 18.6 18.0 103 13.2 17.2 77
Kendall R.S. 7740 8.8 9.6 92 8.9 11.3 79
Loomis Park 8240 12.0 11.4 105 14.9 13.6 110
New Fork Lake 8340 9.0 7.9 114 -M 8.5 *
Pocket Creek 9360 -M -M * 6.1 -M *
Snider Basin 8060 11.6 9.2 126 12.0 11.2 107
Spring Creek Divide 9000 21.5 17.6 122 20.4 18.7 109
Triple Peak 8500 21.9 16.3 134 21.5 19.6 110
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Basin Index (%) 111 92
LOWER GREEN RIVER
Blacks Fork Jct 8869 6.4 -M * 9.4 -M *
Buck Pasture 9632 14.4 -M * 14.0 -M *
EF Blacks Fork GS 9360 12.0 -M * 7.7 -M *
Hams Fork 7840 10.6 8.8 120 9.5 8.9 107
Hewinta 9500 8.5 7.5 113 11.8 10.4 113
Hickerson Park 9122 8.6 5.5 156 9.0 7.3 123
Hole-in-Rock 9168 8.7 5.3 164 8.7 6.8 128
Indian Creek 9425 18.6 18.0 103 13.2 17.2 77
Kelley R.S. 8180 12.8 11.4 112 13.5 14.2 95
Spirit Lk 10235 13.1 -M * 13.9 -M *
Steel Creek Park 10158 12.2 11.0 111 14.4 12.0 120
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Basin Index (%) 119 104
UPPER BEAR RIVER
Bear River RS 8777 7.3 -M * 8.6 -M *
Bug Lake 7987 16.2 14.2 114 14.7 15.0 98
Burts Miller Ranch 8000 5.2 -M * 5.7 -M *
Chalk Creek #1 9171 15.9 17.5 91 14.9 18.8 79
Hayden Fork 9130 13.1 11.5 114 16.2 15.8 103
Kelley R.S. 8180 12.8 11.4 112 13.5 14.2 95
Lily Lake 9133 9.3 9.8 95 10.3 12.8 80
Monte Cristo 8932 22.7 19.9 114 20.0 19.9 101
Salt River Summit 7640 12.5 10.3 121 12.4 13.0 95
Spring Creek Divide 9000 21.5 17.6 122 20.4 18.7 109
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Basin Index (%) 111 95
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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.
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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.