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 17 , 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 13.7 12.8 107 15.7 15.7 100
Black Bear 8170 28.0 27.3 103 28.1 28.2 100
Blind Bull Sum 8650 15.7 16.3 96 13.1 14.6 90
Cottonwood Creek 7670 16.4 15.0 109 19.2 17.9 107
East Rim Divide 7930 7.9 7.4 107 8.2 8.6 95
Grand Targhee 9260 33.1 26.9 123 25.2 23.4 108
Granite Creek 6770 13.9 12.6 110 15.4 15.2 101
Grassy Lake 7265 22.9 24.3 94 26.4 27.2 97
Gros Ventre Summit 8750 6.8 9.0 76 8.0 9.2 87
Gunsight Pass 9820 9.5 9.6 99 11.6 10.1 115
Lewis Lake Divide 7850 22.3 23.5 95 25.6 26.4 97
Phillips Bench 8200 20.7 18.1 114 21.9 20.7 106
Salt River Summit 7640 9.8 9.5 103 11.7 12.2 96
Snake River Station 6920 13.8 13.3 104 18.5 17.3 107
Spring Creek Divide 9000 17.0 16.5 103 18.1 17.6 103
Thumb Divide 7980 11.7 10.9 107 12.8 13.5 95
Togwotee Pass 9580 17.6 16.6 106 18.3 17.8 103
Two Ocean Plateau 9240 20.4 19.7 104 17.3 19.7 88
Willow Creek 8080 21.2 19.8 107 25.2 24.4 103
Younts Peak 8350 -M 11.0 * -M 11.7 *
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Basin Index (%) 104 100
MADISON-GALLATIN
Black Bear 8170 28.0 27.3 103 28.1 28.2 100
Canyon 7870 9.1 9.5 96 10.8 12.0 90
Madison Plateau 7750 17.3 15.9 109 17.8 19.2 93
West Yellowstone 6700 9.6 7.8 123 11.5 10.8 106
Whiskey Creek 6800 12.0 10.9 110 12.5 14.9 84
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Basin Index (%) 106 95
YELLOWSTONE
Beartooth Lake 9360 12.8 15.5 83 11.6 14.5 80
Burnt Mtn 5880 5.5 3.6 153 9.8 8.8 111
Canyon 7870 9.1 9.5 96 10.8 12.0 90
Cole Creek 7850 11.4 8.9 128 -M 8.4 *
Evening Star 9200 18.2 17.8 102 20.8 20.4 102
Fisher Creek 9100 20.3 23.6 86 23.6 23.4 101
Northeast Entrance 7350 7.8 7.5 104 10.1 9.3 109
Parker Peak 9400 16.3 14.3 114 16.8 12.8 131
Sylvan Lake 8420 14.7 14.4 102 20.0 16.6 120
Thumb Divide 7980 11.7 10.9 107 12.8 13.5 95
Two Ocean Plateau 9240 20.4 19.7 104 17.3 19.7 88
White Mill 8700 15.0 16.4 91 13.2 17.5 75
Wolverine 7650 8.1 8.0 101 8.6 9.2 93
Younts Peak 8350 -M 11.0 * -M 11.7 *
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Basin Index (%) 101 99
WIND RIVER
Burroughs Creek 8750 6.6 -M * 8.2 -M *
Castle Creek 8400 2.9 -M * 4.2 -M *
Cold Springs 9630 5.0 5.2 96 5.2 6.8 76
Deer Park 9700 12.5 9.9 126 13.2 14.1 94
Hobbs Park 10100 10.2 8.7 117 7.4 8.7 85
Kirwin 9550 6.6 6.2 106 6.8 8.1 84
Little Warm 9370 5.9 7.4 80 5.8 9.0 64
Owl Creek 8975 4.0 3.4 118 4.5 3.9 115
South Pass 9040 10.5 10.3 102 9.2 12.3 75
St. Lawrence Alt 8620 3.2 4.6 70 6.4 5.9 108
Togwotee Pass 9580 17.6 16.6 106 18.3 17.8 103
Townsend Creek 8700 6.9 5.9 117 7.5 8.0 94
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Basin Index (%) 105 89
BIGHORN BASIN
Bald Mtn. 9380 13.6 13.2 103 9.3 11.9 78
Bear Trap Meadow 8200 6.3 3.8 166 5.5 5.7 96
Bone Springs Div 9350 10.1 10.9 93 8.7 10.7 81
Grave Springs 8550 5.7 5.7 100 6.4 7.2 89
Kirwin 9550 6.6 6.2 106 6.8 8.1 84
Marquette 8760 5.5 -M * 7.1 -M *
Middle Powder 7760 7.0 7.2 97 4.0 8.1 49
Owl Creek 8975 4.0 3.4 118 4.5 3.9 115
Powder River Pass 9480 8.1 7.3 111 7.2 8.8 82
Shell Creek 9580 10.7 10.2 105 9.2 9.7 95
Timber Creek 7950 2.9 3.1 94 4.7 4.9 96
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Basin Index (%) 106 84
SHOSHONE RIVER
Blackwater 9780 15.8 15.7 101 16.6 14.9 111
Evening Star 9200 18.2 17.8 102 20.8 20.4 102
Marquette 8760 5.5 -M * 7.1 -M *
Sylvan Lake 8420 14.7 14.4 102 20.0 16.6 120
Sylvan Road 7120 8.8 8.7 101 11.8 13.1 90
Younts Peak 8350 -M 11.0 * -M 11.7 *
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Basin Index (%) 102 106
POWDER RIVER
Bear Trap Meadow 8200 6.3 3.8 166 5.5 5.7 96
Cloud Peak Reservoir 9860 9.0 9.7 93 7.8 8.8 89
Grave Springs 8550 5.7 5.7 100 6.4 7.2 89
Hansen Sawmill 8360 3.9 4.3 91 5.5 5.5 100
Middle Powder 7760 7.0 7.2 97 4.0 8.1 49
Powder River Pass 9480 8.1 7.3 111 7.2 8.8 82
Soldier Park 8720 3.0 -M * 5.2 -M *
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Basin Index (%) 105 83
TONGUE RIVER
Big Goose 7990 5.6 5.7 98 7.4 7.3 101
Bone Springs Div 9350 10.1 10.9 93 8.7 10.7 81
Burgess Junction 7880 6.2 7.5 83 6.6 8.3 80
Dome Lake 8880 6.1 7.9 77 5.8 9.2 63
Little Goose 8870 6.8 -M * 5.9 -M *
Sucker Creek 8880 8.1 8.1 100 7.6 9.7 78
Tie Creek 6870 3.3 3.9 85 7.6 7.8 97
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Basin Index (%) 90 82
BELLE FOURCHE
Blind Park 6890 6.9 5.7 121 5.9 8.7 68
Cole Canyon 5910 5.3 4.5 118 8.6 6.6 130
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Basin Index (%) 120 95
CHEYENNE RIVER BASIN
Blind Park 6890 6.9 5.7 121 5.9 8.7 68
North Rapid Creek 6130 5.4 5.4 100 5.4 7.1 76
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Basin Index (%) 111 72
UPPER N. PLATTE
Arapaho Ridge 10960 17.8 14.9 119 18.3 16.2 113
Blackhall Mtn 9820 22.4 -M * 24.2 -M *
Columbine 9160 20.4 17.5 117 21.0 18.7 112
Divide Peak 8880 14.5 14.1 103 17.2 15.6 110
Joe Wright 10120 14.4 14.8 97 21.9 18.1 121
Laprele Creek 8375 9.0 6.7 134 9.6 8.5 113
Med Bow 10500 26.3 -M * 25.1 -M *
Never Summer 10280 15.3 14.2 108 13.4 -M *
North French Creek 10130 20.9 19.3 108 21.9 19.1 115
Old Battle 10000 25.5 22.2 115 26.5 25.7 103
Rawah 9020 8.8 7.5 117 11.6 9.9 117
Sage Creek Basin 7850 13.4 9.8 137 13.2 11.0 120
Sand Lake 10050 19.8 18.7 106 16.4 17.2 95
South Brush Creek 8440 7.9 8.6 92 8.6 10.6 81
Tower 10500 38.0 32.8 116 33.5 29.1 115
Webber Springs 9250 18.2 16.8 108 24.6 19.3 127
Whiskey Park 8950 20.9 19.3 108 24.2 20.6 117
Willow Creek Pass 9540 10.2 8.6 119 12.0 9.4 128
Zirkel 9340 23.0 21.0 110 27.1 21.6 125
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Basin Index (%) 112 114
SWEETWATER
Deer Park 9700 12.5 9.9 126 13.2 14.1 94
Larsen Creek 9000 8.6 8.6 100 11.6 -M *
South Pass 9040 10.5 10.3 102 9.2 12.3 75
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Basin Index (%) 110 85
LOWER N. PLATTE
Casper Mtn. 7900 10.6 9.0 118 8.7 10.2 85
Laprele Creek 8375 9.0 6.7 134 9.6 8.5 113
Reno Hill 8400 11.0 8.9 124 11.6 10.2 114
Windy Peak 7900 6.7 5.2 129 6.9 7.2 96
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Basin Index (%) 125 102
LARAMIE RIVER
Brooklyn Lake 10240 16.3 13.9 117 17.7 14.6 121
Cinnabar Park 9574 14.8 16.0 92 17.3 18.3 95
Crow Creek 8330 2.8 6.4 44 6.5 7.2 90
Deadman Hill 10220 13.4 11.5 117 12.6 11.6 109
Rawah 9020 8.8 7.5 117 11.6 9.9 117
Roach 9700 11.4 11.6 98 14.2 13.4 106
Windy Peak 7900 6.7 5.2 129 6.9 7.2 96
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Basin Index (%) 103 106
S. PLATTE
Black Mountain 8920 7.0 -M * 7.9 -M *
Crow Creek 8330 2.8 6.4 44 6.5 7.2 90
Deadman Hill 10220 13.4 11.5 117 12.6 11.6 109
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Basin Index (%) 91 102
LITTLE SNAKE RIVER
Battle Mountain 7440 10.0 8.7 115 15.3 11.1 138
Divide Peak 8880 14.5 14.1 103 17.2 15.6 110
Elk River 8700 14.3 13.8 104 13.5 14.6 92
Little Snake River 8915 20.0 18.4 109 28.5 23.3 122
Old Battle 10000 25.5 22.2 115 26.5 25.7 103
Sage Creek Basin 7850 13.4 9.8 137 13.2 11.0 120
Sandstone RS 8150 12.3 9.9 124 13.3 13.8 96
Whiskey Park 8950 20.9 19.3 108 24.2 20.6 117
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Basin Index (%) 113 112
UPPER GREEN RIVER
Big Sandy Opening 9080 10.4 9.0 116 11.2 9.4 119
Blind Bull Sum 8650 15.7 16.3 96 13.1 14.6 90
East Rim Divide 7930 7.9 7.4 107 8.2 8.6 95
Elkhart Park G.S. 9400 8.7 8.6 101 9.9 9.5 104
Gros Ventre Summit 8750 6.8 9.0 76 8.0 9.2 87
Gunsight Pass 9820 9.5 9.6 99 11.6 10.1 115
Indian Creek 9425 16.0 16.6 96 12.9 16.1 80
Kendall R.S. 7740 8.3 9.0 92 8.7 10.5 83
Loomis Park 8240 11.6 10.6 109 12.5 12.7 98
New Fork Lake 8340 7.3 7.5 97 6.9 7.9 87
Pocket Creek 9360 10.9 -M * 11.8 -M *
Snyder Basin 8060 8.8 9.0 98 10.6 10.5 101
Spring Creek Divide 9000 17.0 16.5 103 18.1 17.6 103
Triple Peak 8500 16.9 15.5 109 19.0 18.2 104
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Basin Index (%) 100 97
LOWER GREEN RIVER
Blacks Fork Jct 8869 6.3 -M * 9.4 -M *
Buck Pasture 9632 11.7 -M * 14.7 -M *
EF Blacks Fork GS 9360 8.9 -M * 7.8 -M *
Hams Fork 7840 8.0 8.4 95 8.5 8.3 102
Hewinta 9500 7.5 7.0 107 10.3 9.9 104
Hickerson Park 9122 5.6 5.1 110 7.8 6.9 113
Hole-in-Rock 9168 4.2 4.8 88 7.2 6.5 111
Indian Creek 9425 16.0 16.6 96 12.9 16.1 80
Kelley R.S. 8180 10.6 10.7 99 11.2 13.2 85
Spirit Lk 10235 11.4 -M * 11.8 -M *
Steel Creek Park 10158 11.2 10.3 109 13.2 11.2 118
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Basin Index (%) 100 99
UPPER BEAR RIVER
Bear River RS 8777 8.1 -M * 11.1 -M *
Bug Lake 7987 16.0 13.3 120 17.3 14.1 123
Burts Miller Ranch 8000 5.3 -M * 6.4 -M *
Chalk Creek #1 9171 18.5 16.1 115 21.8 17.8 122
Hayden Fork 9130 13.2 11.0 120 18.0 14.9 121
Kelley R.S. 8180 10.6 10.7 99 11.2 13.2 85
Lily Lake 9133 9.2 9.0 102 12.4 12.1 102
Monte Cristo 8932 22.9 18.9 121 23.0 18.6 124
Salt River Summit 7640 9.8 9.5 103 11.7 12.2 96
Spring Creek Divide 9000 17.0 16.5 103 18.1 17.6 103
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Basin Index (%) 112 111
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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.