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 1 , 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 17.2 13.5 127 19.1 17.2 111
Black Bear 8170 37.8 29.6 128 37.6 30.8 122
Blind Bull Sum 8650 19.4 17.9 108 15.8 16.0 99
Cottonwood Creek 7670 17.8 16.9 105 20.8 19.6 106
East Rim Divide 7930 9.5 8.1 117 9.8 9.6 102
Grand Targhee 9260 36.5 30.2 121 27.7 24.8 112
Granite Creek 6770 17.1 13.8 124 18.2 16.5 110
Grassy Lake 7265 28.9 26.2 110 31.7 29.4 108
Gros Ventre Summit 8750 8.5 9.7 88 10.1 10.1 100
Gunsight Pass 9820 11.4 10.6 108 13.3 10.9 122
Lewis Lake Divide 7850 30.4 25.2 121 30.3 28.7 106
Phillips Bench 8200 25.7 19.7 130 22.1 22.7 97
Salt River Summit 7640 11.1 10.6 105 13.0 13.4 97
Snake River Station 6920 18.0 14.2 127 22.6 18.7 121
Spring Creek Divide 9000 19.3 18.6 104 20.1 19.3 104
Thumb Divide 7980 16.1 12.3 131 15.9 14.6 109
Togwotee Pass 9580 21.1 17.7 119 20.9 19.4 108
Two Ocean Plateau 9240 26.3 21.6 122 21.2 21.6 98
Willow Creek 8080 24.9 22.2 112 28.6 26.8 107
Younts Peak 8350 -M 11.7 * -M 12.6 *
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Basin Index (%) 117 108
MADISON-GALLATIN
Black Bear 8170 37.8 29.6 128 37.6 30.8 122
Canyon 7870 12.0 10.5 114 13.8 13.0 106
Madison Plateau 7750 24.7 17.8 139 24.1 21.2 114
West Yellowstone 6700 13.1 9.0 146 15.2 11.7 130
Whiskey Creek 6800 17.2 12.0 143 17.6 16.3 108
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Basin Index (%) 133 116
YELLOWSTONE
Beartooth Lake 9360 17.4 16.7 104 16.0 15.7 102
Burnt Mtn 5880 7.6 4.0 190 11.6 9.5 122
Canyon 7870 12.0 10.5 114 13.8 13.0 106
Cole Creek 7850 13.3 9.9 134 -M 9.1 *
Evening Star 9200 22.5 19.1 118 24.6 22.1 111
Fisher Creek 9100 26.6 25.8 103 29.2 25.5 115
Northeast Entrance 7350 9.5 8.2 116 11.6 9.9 117
Parker Peak 9400 20.4 16.0 128 20.3 14.0 145
Sylvan Lake 8420 18.0 15.9 113 23.3 18.0 129
Thumb Divide 7980 16.1 12.3 131 15.9 14.6 109
Two Ocean Plateau 9240 26.3 21.6 122 21.2 21.6 98
White Mill 8700 18.6 18.3 102 16.3 18.9 86
Wolverine 7650 11.1 8.5 131 11.1 10.0 111
Younts Peak 8350 -M 11.7 * -M 12.6 *
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Basin Index (%) 117 111
WIND RIVER
Burroughs Creek 8750 9.5 -M * 11.2 -M *
Castle Creek 8400 3.7 -M * 5.0 -M *
Cold Springs 9630 5.8 5.5 105 6.0 7.5 80
Deer Park 9700 14.0 10.8 130 15.0 15.3 98
Hobbs Park 10100 11.8 9.7 122 8.6 9.5 91
Kirwin 9550 8.9 7.0 127 9.2 8.8 105
Little Warm 9370 7.4 7.9 94 7.4 9.8 76
Owl Creek 8975 4.3 3.9 110 4.9 4.3 114
South Pass 9040 11.8 11.4 104 9.8 13.5 73
St. Lawrence Alt 8620 3.7 5.2 71 7.1 6.5 109
Togwotee Pass 9580 21.1 17.7 119 20.9 19.4 108
Townsend Creek 8700 7.5 6.5 115 8.3 8.6 97
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Basin Index (%) 112 94
BIGHORN BASIN
Bald Mtn. 9380 14.5 14.7 99 10.3 13.1 79
Bear Trap Meadow 8200 6.7 4.4 152 6.0 6.1 98
Bone Springs Div 9350 10.8 12.0 90 9.3 11.7 79
Grave Springs 8550 5.9 6.9 86 7.0 7.9 89
Kirwin 9550 8.9 7.0 127 9.2 8.8 105
Marquette 8760 5.8 -M * 7.2 -M *
Middle Powder 7760 7.2 8.0 90 4.3 8.7 49
Owl Creek 8975 4.3 3.9 110 4.9 4.3 114
Powder River Pass 9480 8.3 8.0 104 7.9 9.6 82
Shell Creek 9580 11.4 11.6 98 9.9 10.7 93
Timber Creek 7950 3.0 3.7 81 4.9 5.3 92
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Basin Index (%) 101 85
SHOSHONE RIVER
Blackwater 9780 19.7 17.2 115 19.9 16.1 124
Evening Star 9200 22.5 19.1 118 24.6 22.1 111
Marquette 8760 5.8 -M * 7.2 -M *
Sylvan Lake 8420 18.0 15.9 113 23.3 18.0 129
Sylvan Road 7120 10.8 9.4 115 14.0 13.9 101
Younts Peak 8350 -M 11.7 * -M 12.6 *
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Basin Index (%) 115 117
POWDER RIVER
Bear Trap Meadow 8200 6.7 4.4 152 6.0 6.1 98
Cloud Peak Reservoir 9860 9.5 10.4 91 8.5 9.6 89
Grave Springs 8550 5.9 6.9 86 7.0 7.9 89
Hansen Sawmill 8360 4.4 4.7 94 5.9 6.1 97
Middle Powder 7760 7.2 8.0 90 4.3 8.7 49
Powder River Pass 9480 8.3 8.0 104 7.9 9.6 82
Soldier Park 8720 3.1 -M * 5.6 -M *
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Basin Index (%) 99 82
TONGUE RIVER
Big Goose 7990 6.0 6.2 97 7.7 7.9 97
Bone Springs Div 9350 10.8 12.0 90 9.3 11.7 79
Burgess Junction 7880 6.5 8.3 78 7.1 9.0 79
Dome Lake 8880 6.7 8.7 77 6.3 10.0 63
Little Goose 8870 7.1 -M * 6.1 -M *
Sucker Creek 8880 8.5 8.9 96 8.1 10.6 76
Tie Creek 6870 3.6 4.3 84 7.9 8.4 94
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Basin Index (%) 87 81
BELLE FOURCHE
Blind Park 6890 7.1 6.4 111 6.3 9.4 67
Cole Canyon 5910 5.4 5.0 108 9.4 7.1 132
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Basin Index (%) 110 95
CHEYENNE RIVER BASIN
Blind Park 6890 7.1 6.4 111 6.3 9.4 67
North Rapid Creek 6130 5.7 5.9 97 5.7 7.6 75
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Basin Index (%) 104 71
UPPER N. PLATTE
Arapaho Ridge 10960 18.9 16.7 113 19.5 17.7 110
Blackhall Mtn 9820 24.1 -M * 25.8 -M *
Columbine 9160 21.7 19.8 110 22.3 20.3 110
Divide Peak 8880 15.8 15.8 100 18.4 16.8 110
Joe Wright 10120 15.0 16.6 90 22.6 19.9 114
Laprele Creek 8375 9.2 7.8 118 9.9 9.3 106
Med Bow 10500 28.3 -M * 26.4 -M *
Never Summer 10280 16.0 16.2 99 14.0 -M *
North French Creek 10130 22.3 21.1 106 23.0 21.1 109
Old Battle 10000 27.9 23.9 117 28.7 27.9 103
Rawah 9020 9.0 8.8 102 12.1 10.9 111
Sage Creek Basin 7850 14.5 10.6 137 14.2 11.7 121
Sand Lake 10050 21.3 21.2 100 17.6 18.9 93
South Brush Creek 8440 8.2 10.3 80 9.1 11.7 78
Tower 10500 39.6 36.3 109 34.6 31.8 109
Webber Springs 9250 19.9 18.7 106 24.0 21.1 114
Whiskey Park 8950 22.8 21.5 106 25.5 22.4 114
Willow Creek Pass 9540 11.0 9.5 116 12.8 10.4 123
Zirkel 9340 24.8 23.0 108 28.9 23.4 124
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Basin Index (%) 107 109
SWEETWATER
Deer Park 9700 14.0 10.8 130 15.0 15.3 98
Larsen Creek 9000 10.0 9.5 105 12.8 -M *
South Pass 9040 11.8 11.4 104 9.8 13.5 73
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Basin Index (%) 113 86
LOWER N. PLATTE
Casper Mtn. 7900 10.7 10.2 105 9.2 11.1 83
Laprele Creek 8375 9.2 7.8 118 9.9 9.3 106
Reno Hill 8400 11.3 10.0 113 12.1 11.1 109
Windy Peak 7900 7.1 5.7 125 7.7 7.8 99
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Basin Index (%) 114 99
LARAMIE RIVER
Brooklyn Lake 10240 17.3 15.0 115 18.7 16.0 117
Cinnabar Park 9574 15.8 17.1 92 18.4 19.7 93
Crow Creek 8330 3.1 6.7 46 6.9 7.8 88
Deadman Hill 10220 14.2 12.4 115 13.1 12.7 103
Rawah 9020 9.0 8.8 102 12.1 10.9 111
Roach 9700 12.2 12.4 98 15.1 14.7 103
Windy Peak 7900 7.1 5.7 125 7.7 7.8 99
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Basin Index (%) 101 103
S. PLATTE
Black Mountain 8920 7.5 -M * 8.3 -M *
Crow Creek 8330 3.1 6.7 46 6.9 7.8 88
Deadman Hill 10220 14.2 12.4 115 13.1 12.7 103
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Basin Index (%) 91 98
LITTLE SNAKE RIVER
Battle Mountain 7440 10.6 9.9 107 13.0 12.1 107
Divide Peak 8880 15.8 15.8 100 18.4 16.8 110
Elk River 8700 15.0 15.5 97 14.4 15.9 91
Little Snake River 8915 22.2 19.7 113 30.0 24.9 120
Old Battle 10000 27.9 23.9 117 28.7 27.9 103
Sage Creek Basin 7850 14.5 10.6 137 14.2 11.7 121
Sandstone RS 8150 13.6 10.4 131 14.5 15.0 97
Whiskey Park 8950 22.8 21.5 106 25.5 22.4 114
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Basin Index (%) 112 108
UPPER GREEN RIVER
Big Sandy Opening 9080 11.7 10.1 116 12.7 10.5 121
Blind Bull Sum 8650 19.4 17.9 108 15.8 16.0 99
East Rim Divide 7930 9.5 8.1 117 9.8 9.6 102
Elkhart Park G.S. 9400 10.8 9.4 115 11.4 10.5 109
Gros Ventre Summit 8750 8.5 9.7 88 10.1 10.1 100
Gunsight Pass 9820 11.4 10.6 108 13.3 10.9 122
Indian Creek 9425 17.7 19.0 93 14.3 17.8 80
Kendall R.S. 7740 10.0 9.7 103 10.5 11.7 90
Loomis Park 8240 13.9 11.7 119 14.8 14.0 106
New Fork Lake 8340 8.5 8.2 104 7.7 8.8 88
Pocket Creek 9360 12.2 -M * 13.1 -M *
Snyder Basin 8060 10.0 9.6 104 11.6 11.5 101
Spring Creek Divide 9000 19.3 18.6 104 20.1 19.3 104
Triple Peak 8500 19.7 16.8 117 21.7 20.2 107
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Basin Index (%) 107 102
LOWER GREEN RIVER
Blacks Fork Jct 8869 6.9 -M * 9.8 -M *
Buck Pasture 9632 11.8 -M * 14.5 -M *
EF Blacks Fork GS 9360 9.3 -M * 8.0 -M *
Hams Fork 7840 8.5 9.2 92 8.9 9.1 98
Hewinta 9500 8.2 7.9 104 11.0 10.8 102
Hickerson Park 9122 6.1 5.9 103 8.5 7.6 112
Hole-in-Rock 9168 4.8 5.6 86 7.9 7.1 111
Indian Creek 9425 17.7 19.0 93 14.3 17.8 80
Kelley R.S. 8180 11.3 12.1 93 11.9 14.6 82
Spirit Lk 10235 12.2 -M * 12.6 -M *
Steel Creek Park 10158 11.5 11.5 100 13.6 12.4 110
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Basin Index (%) 96 96
UPPER BEAR RIVER
Bear River RS 8777 8.4 -M * 11.5 -M *
Bug Lake 7987 18.0 14.8 122 18.6 15.5 120
Burts Miller Ranch 8000 5.5 -M * 6.8 -M *
Chalk Creek #1 9171 19.1 18.3 104 23.2 19.4 120
Hayden Fork 9130 13.6 12.1 112 18.5 16.4 113
Kelley R.S. 8180 11.3 12.1 93 11.9 14.6 82
Lily Lake 9133 9.6 10.3 93 12.7 13.2 96
Monte Cristo 8932 24.4 21.0 116 24.0 20.5 117
Salt River Summit 7640 11.1 10.6 105 13.0 13.4 97
Spring Creek Divide 9000 19.3 18.6 104 20.1 19.3 104
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Basin Index (%) 107 107
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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.