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 SUNDAY: FEBRUARY 24 , 2019
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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 14.0 13.1 107 16.0 16.8 95
Black Bear 8170 29.0 28.5 102 29.8 29.9 100
Blind Bull Sum 8650 16.2 17.4 93 13.3 15.5 86
Cottonwood Creek 7670 16.6 16.1 103 19.3 18.9 102
East Rim Divide 7930 8.1 7.7 105 8.4 9.2 91
Grand Targhee 9260 34.6 28.6 121 26.0 24.1 108
Granite Creek 6770 14.1 13.2 107 15.5 16.0 97
Grassy Lake 7265 23.8 25.2 94 27.3 28.8 95
Gros Ventre Summit 8750 7.0 9.4 74 8.4 9.8 86
Gunsight Pass 9820 9.9 10.2 97 12.1 10.5 115
Lewis Lake Divide 7850 23.0 24.9 92 26.0 28.1 93
Phillips Bench 8200 21.2 19.1 111 21.9 22.1 99
Salt River Summit 7640 -M 10.3 * -M 13.0 *
Snake River Station 6920 14.4 13.8 104 19.0 18.2 104
Spring Creek Divide 9000 17.6 17.6 100 18.5 18.7 99
Thumb Divide 7980 11.8 11.5 103 13.3 14.2 94
Togwotee Pass 9580 18.3 17.2 106 18.8 18.8 100
Two Ocean Plateau 9240 20.9 21.0 100 17.5 21.0 83
Willow Creek 8080 22.0 21.5 102 25.6 26.0 98
Younts Peak 8350 -M 11.4 * -M 12.3 *
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Basin Index (%) 102 97
MADISON-GALLATIN
Black Bear 8170 29.0 28.5 102 29.8 29.9 100
Canyon 7870 9.6 10.2 94 11.3 12.7 89
Madison Plateau 7750 17.9 17.3 103 18.3 20.5 89
West Yellowstone 6700 9.8 8.5 115 11.8 11.3 104
Whiskey Creek 6800 12.2 11.6 105 12.8 15.8 81
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Basin Index (%) 103 93
YELLOWSTONE
Beartooth Lake 9360 13.1 16.0 82 11.8 15.2 78
Burnt Mtn 5880 5.8 3.9 149 9.9 9.1 109
Canyon 7870 9.6 10.2 94 11.3 12.7 89
Cole Creek 7850 11.6 9.2 126 -M 8.8 *
Evening Star 9200 18.5 18.7 99 21.2 21.5 99
Fisher Creek 9100 20.8 25.0 83 24.2 24.8 98
Northeast Entrance 7350 8.0 7.7 104 10.3 9.6 107
Parker Peak 9400 16.7 15.4 108 17.2 13.6 126
Sylvan Lake 8420 15.2 15.4 99 20.3 17.4 117
Thumb Divide 7980 11.8 11.5 103 13.3 14.2 94
Two Ocean Plateau 9240 20.9 21.0 100 17.5 21.0 83
White Mill 8700 15.3 17.8 86 13.5 18.5 73
Wolverine 7650 8.4 8.4 100 9.0 9.7 93
Younts Peak 8350 -M 11.4 * -M 12.3 *
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Basin Index (%) 98 96
WIND RIVER
Burroughs Creek 8750 6.8 -M * 8.6 -M *
Castle Creek 8400 3.2 -M * 4.4 -M *
Cold Springs 9630 5.3 5.4 98 5.6 7.2 78
Deer Park 9700 12.9 10.5 123 13.8 14.5 95
Hobbs Park 10100 10.5 9.2 114 8.0 9.1 88
Kirwin 9550 6.9 6.7 103 7.2 8.5 85
Little Warm 9370 6.3 7.7 82 5.9 9.5 62
Owl Creek 8975 4.2 3.7 114 4.7 4.2 112
South Pass 9040 10.8 10.9 99 9.5 13.0 73
St. Lawrence Alt 8620 3.6 5.0 72 6.7 6.2 108
Togwotee Pass 9580 18.3 17.2 106 18.8 18.8 100
Townsend Creek 8700 7.2 6.2 116 8.0 8.4 95
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Basin Index (%) 104 89
BIGHORN BASIN
Bald Mtn. 9380 14.0 14.1 99 9.7 12.6 77
Bear Trap Meadow 8200 6.5 4.1 159 5.5 5.9 93
Bone Springs Div 9350 10.4 11.4 91 8.8 11.3 78
Grave Springs 8550 5.8 6.3 92 6.6 7.5 88
Kirwin 9550 6.9 6.7 103 7.2 8.5 85
Marquette 8760 5.8 -M * 7.2 -M *
Middle Powder 7760 7.1 7.6 93 3.9 8.4 46
Owl Creek 8975 4.2 3.7 114 4.7 4.2 112
Powder River Pass 9480 8.2 7.6 108 7.5 9.2 82
Shell Creek 9580 10.8 10.9 99 9.4 10.2 92
Timber Creek 7950 3.0 3.1 97 4.9 5.0 98
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Basin Index (%) 102 82
SHOSHONE RIVER
Blackwater 9780 16.2 16.7 97 17.0 15.6 109
Evening Star 9200 18.5 18.7 99 21.2 21.5 99
Marquette 8760 5.8 -M * 7.2 -M *
Sylvan Lake 8420 15.2 15.4 99 20.3 17.4 117
Sylvan Road 7120 8.9 9.0 99 12.1 13.6 89
Younts Peak 8350 -M 11.4 * -M 12.3 *
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Basin Index (%) 98 104
POWDER RIVER
Bear Trap Meadow 8200 6.5 4.1 159 5.5 5.9 93
Cloud Peak Reservoir 9860 9.1 10.1 90 8.0 9.2 87
Grave Springs 8550 5.8 6.3 92 6.6 7.5 88
Hansen Sawmill 8360 4.2 4.5 93 5.7 5.8 98
Middle Powder 7760 7.1 7.6 93 3.9 8.4 46
Powder River Pass 9480 8.2 7.6 108 7.5 9.2 82
Soldier Park 8720 3.2 -M * 5.3 -M *
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Basin Index (%) 102 81
TONGUE RIVER
Big Goose 7990 5.7 6.0 95 7.5 7.6 99
Bone Springs Div 9350 10.4 11.4 91 8.8 11.3 78
Burgess Junction 7880 6.3 7.9 80 6.7 8.7 77
Dome Lake 8880 6.2 8.3 75 6.0 9.7 62
Little Goose 8870 7.0 -M * 6.0 -M *
Sucker Creek 8880 8.3 8.5 98 7.6 10.1 75
Tie Creek 6870 3.4 4.2 81 7.5 8.0 94
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Basin Index (%) 87 80
BELLE FOURCHE
Blind Park 6890 6.9 6.1 113 6.1 9.0 68
Cole Canyon 5910 5.2 4.8 108 9.0 6.9 130
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Basin Index (%) 111 95
CHEYENNE RIVER BASIN
Blind Park 6890 6.9 6.1 113 6.1 9.0 68
North Rapid Creek 6130 5.6 5.7 98 5.6 7.3 77
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Basin Index (%) 106 72
UPPER N. PLATTE
Arapaho Ridge 10960 18.4 15.8 116 18.8 17.0 111
Blackhall Mtn 9820 23.1 -M * 24.7 -M *
Columbine 9160 21.0 19.0 111 21.5 19.6 110
Divide Peak 8880 15.0 15.2 99 17.7 16.4 108
Joe Wright 10120 14.7 15.7 94 22.3 19.3 116
Laprele Creek 8375 9.0 7.4 122 9.7 9.0 108
Med Bow 10500 27.5 -M * 25.7 -M *
Never Summer 10280 15.7 15.4 102 13.8 -M *
North French Creek 10130 21.7 20.2 107 22.6 20.3 111
Old Battle 10000 26.6 23.3 114 27.2 27.1 100
Rawah 9020 9.0 8.2 110 11.8 10.3 115
Sage Creek Basin 7850 13.8 10.4 133 13.7 11.4 120
Sand Lake 10050 20.4 20.3 100 17.0 18.3 93
South Brush Creek 8440 7.9 9.7 81 8.8 11.3 78
Tower 10500 38.6 35.2 110 34.0 30.9 110
Webber Springs 9250 18.8 18.1 104 22.7 20.4 111
Whiskey Park 8950 -M 20.5 * -M 21.7 *
Willow Creek Pass 9540 10.7 9.1 118 12.5 10.0 125
Zirkel 9340 23.7 22.4 106 27.0 22.6 119
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Basin Index (%) 107 109
SWEETWATER
Deer Park 9700 12.9 10.5 123 13.8 14.5 95
Larsen Creek 9000 8.9 9.1 98 11.8 -M *
South Pass 9040 10.8 10.9 99 9.5 13.0 73
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Basin Index (%) 107 85
LOWER N. PLATTE
Casper Mtn. 7900 10.7 9.7 110 8.9 10.7 83
Laprele Creek 8375 9.0 7.4 122 9.7 9.0 108
Reno Hill 8400 11.0 9.5 116 11.8 10.7 110
Windy Peak 7900 6.8 5.6 121 7.0 7.5 93
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Basin Index (%) 116 99
LARAMIE RIVER
Brooklyn Lake 10240 16.8 14.6 115 18.3 15.5 118
Cinnabar Park 9574 15.4 16.5 93 17.9 19.1 94
Crow Creek 8330 3.1 6.6 47 6.8 7.6 89
Deadman Hill 10220 13.7 12.1 113 12.8 12.3 104
Rawah 9020 9.0 8.2 110 11.8 10.3 115
Roach 9700 11.8 12.1 98 14.5 14.2 102
Windy Peak 7900 6.8 5.6 121 7.0 7.5 93
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Basin Index (%) 101 103
S. PLATTE
Black Mountain 8920 7.2 -M * 8.1 -M *
Crow Creek 8330 3.1 6.6 47 6.8 7.6 89
Deadman Hill 10220 13.7 12.1 113 12.8 12.3 104
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Basin Index (%) 90 98
LITTLE SNAKE RIVER
Battle Mountain 7440 10.4 9.4 111 12.6 11.8 107
Divide Peak 8880 15.0 15.2 99 17.7 16.4 108
Elk River 8700 14.7 14.6 101 14.1 15.5 91
Little Snake River 8915 21.0 19.3 109 29.2 24.3 120
Old Battle 10000 26.6 23.3 114 27.2 27.1 100
Sage Creek Basin 7850 13.8 10.4 133 13.7 11.4 120
Sandstone RS 8150 12.8 10.3 124 14.0 14.6 96
Whiskey Park 8950 -M 20.5 * -M 21.7 *
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Basin Index (%) 112 106
UPPER GREEN RIVER
Big Sandy Opening 9080 10.6 9.6 110 11.5 10.1 114
Blind Bull Sum 8650 16.2 17.4 93 13.3 15.5 86
East Rim Divide 7930 8.1 7.7 105 8.4 9.2 91
Elkhart Park G.S. 9400 8.9 9.1 98 10.2 10.1 101
Gros Ventre Summit 8750 7.0 9.4 74 8.4 9.8 86
Gunsight Pass 9820 9.9 10.2 97 12.1 10.5 115
Indian Creek 9425 16.5 18.0 92 13.4 17.2 78
Kendall R.S. 7740 8.6 9.6 90 9.1 11.3 81
Loomis Park 8240 11.8 11.4 104 12.9 13.6 95
New Fork Lake 8340 7.6 7.9 96 7.1 8.5 84
Pocket Creek 9360 11.1 -M * 12.0 -M *
Snyder Basin 8060 9.3 9.2 101 11.0 11.2 98
Spring Creek Divide 9000 17.6 17.6 100 18.5 18.7 99
Triple Peak 8500 17.3 16.3 106 19.3 19.6 98
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Basin Index (%) 97 94
LOWER GREEN RIVER
Blacks Fork Jct 8869 6.4 -M * 9.6 -M *
Buck Pasture 9632 11.8 -M * 14.6 -M *
EF Blacks Fork GS 9360 9.0 -M * 7.8 -M *
Hams Fork 7840 8.1 8.8 92 8.7 8.9 98
Hewinta 9500 7.7 7.5 103 10.6 10.4 102
Hickerson Park 9122 6.1 5.5 111 8.0 7.3 110
Hole-in-Rock 9168 4.7 5.3 89 7.6 6.8 112
Indian Creek 9425 16.5 18.0 92 13.4 17.2 78
Kelley R.S. 8180 10.9 11.4 96 11.5 14.2 81
Spirit Lk 10235 11.9 -M * 12.2 -M *
Steel Creek Park 10158 11.4 11.0 104 13.5 12.0 112
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Basin Index (%) 97 95
UPPER BEAR RIVER
Bear River RS 8777 8.2 -M * 11.2 -M *
Bug Lake 7987 17.0 14.2 120 17.8 15.0 119
Burts Miller Ranch 8000 5.2 -M * 6.5 -M *
Chalk Creek #1 9171 18.8 17.5 107 21.9 18.8 116
Hayden Fork 9130 13.3 11.5 116 18.4 15.8 116
Kelley R.S. 8180 10.9 11.4 96 11.5 14.2 81
Lily Lake 9133 9.4 9.8 96 12.5 12.8 98
Monte Cristo 8932 23.7 19.9 119 23.6 19.9 119
Salt River Summit 7640 -M 10.3 * -M 13.0 *
Spring Creek Divide 9000 17.6 17.6 100 18.5 18.7 99
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Basin Index (%) 109 108
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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.