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: MARCH 11 , 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 18.1 13.8 131 20.1 18.3 110
Black Bear 8170 40.4 31.5 128 39.6 33.1 120
Blind Bull Sum 8650 20.9 19.4 108 16.9 16.9 100
Cottonwood Creek 7670 19.1 18.5 103 22.1 20.7 107
East Rim Divide 7930 10.1 9.4 107 10.3 10.2 101
Grand Targhee 9260 38.5 31.9 121 28.9 25.7 112
Granite Creek 6770 18.6 14.6 127 19.2 17.5 110
Grassy Lake 7265 31.2 27.6 113 34.4 31.2 110
Gros Ventre Summit 8750 8.6 10.9 79 10.6 10.9 97
Gunsight Pass 9820 12.1 11.6 104 14.0 11.6 121
Lewis Lake Divide 7850 32.5 26.5 123 30.8 30.8 100
Phillips Bench 8200 27.1 21.2 128 -M 24.2 *
Salt River Summit 7640 12.1 11.2 108 13.8 14.2 97
Snake River Station 6920 19.7 15.2 130 24.0 19.6 122
Spring Creek Divide 9000 20.7 19.6 106 21.3 20.4 104
Thumb Divide 7980 17.3 13.2 131 16.2 15.8 103
Togwotee Pass 9580 22.0 19.5 113 22.5 20.7 109
Two Ocean Plateau 9240 27.6 23.1 119 21.8 23.3 94
Willow Creek 8080 27.2 24.1 113 30.5 28.5 107
Younts Peak 8350 -M 12.4 * -M 13.4 *
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Basin Index (%) 117 107
MADISON-GALLATIN
Black Bear 8170 40.4 31.5 128 39.6 33.1 120
Canyon 7870 12.5 11.5 109 14.2 14.0 101
Madison Plateau 7750 26.2 19.3 136 25.3 22.8 111
West Yellowstone 6700 14.0 9.7 144 15.9 12.4 128
Whiskey Creek 6800 18.3 13.2 139 18.7 17.4 107
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Basin Index (%) 131 114
YELLOWSTONE
Beartooth Lake 9360 18.4 18.4 100 17.0 16.8 101
Burnt Mtn 5880 7.8 4.3 181 11.9 10.2 117
Canyon 7870 12.5 11.5 109 14.2 14.0 101
Cole Creek 7850 13.7 11.2 122 -M 9.9 *
Evening Star 9200 23.6 20.9 113 25.5 23.4 109
Fisher Creek 9100 28.2 27.0 104 30.7 27.2 113
Northeast Entrance 7350 10.1 8.6 117 12.1 10.5 115
Parker Peak 9400 -M 16.7 * -M 15.0 *
Sylvan Lake 8420 19.3 17.0 114 24.5 19.0 129
Thumb Divide 7980 17.3 13.2 131 16.2 15.8 103
Two Ocean Plateau 9240 27.6 23.1 119 21.8 23.3 94
White Mill 8700 19.9 19.2 104 17.4 20.3 86
Wolverine 7650 11.7 9.0 130 11.5 10.5 110
Younts Peak 8350 -M 12.4 * -M 13.4 *
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Basin Index (%) 115 106
WIND RIVER
Burroughs Creek 8750 9.7 -M * 11.4 -M *
Castle Creek 8400 3.8 -M * 5.1 -M *
Cold Springs 9630 5.8 5.9 98 6.2 8.0 78
Deer Park 9700 14.6 12.1 121 15.7 16.3 96
Hobbs Park 10100 12.0 11.0 109 8.8 10.4 85
Kirwin 9550 9.0 7.8 115 9.3 9.4 99
Little Warm 9370 7.7 8.7 89 7.2 10.5 69
Owl Creek 8975 4.4 4.3 102 4.9 4.6 107
South Pass 9040 12.2 12.5 98 10.4 14.5 72
St. Lawrence Alt 8620 3.6 5.9 61 7.1 7.0 101
Togwotee Pass 9580 22.0 19.5 113 22.5 20.7 109
Townsend Creek 8700 7.5 7.4 101 8.3 9.4 88
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Basin Index (%) 104 91
BIGHORN BASIN
Bald Mtn. 9380 14.9 16.0 93 10.7 13.9 77
Bear Trap Meadow 8200 7.0 4.7 149 6.0 6.6 91
Bone Springs Div 9350 11.5 13.3 86 9.8 12.6 78
Grave Springs 8550 6.8 7.5 91 7.3 8.3 88
Kirwin 9550 9.0 7.8 115 9.3 9.4 99
Marquette 8760 6.1 -M * 7.6 -M *
Middle Powder 7760 8.1 8.8 92 4.2 9.3 45
Owl Creek 8975 4.4 4.3 102 4.9 4.6 107
Powder River Pass 9480 8.9 8.5 105 8.2 10.2 80
Shell Creek 9580 11.8 12.3 96 10.1 11.2 90
Timber Creek 7950 3.2 4.1 78 5.1 5.6 91
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Basin Index (%) 98 82
SHOSHONE RIVER
Blackwater 9780 21.3 19.1 112 21.5 17.2 125
Evening Star 9200 23.6 20.9 113 25.5 23.4 109
Marquette 8760 6.1 -M * 7.6 -M *
Sylvan Lake 8420 19.3 17.0 114 24.5 19.0 129
Sylvan Road 7120 11.7 10.0 117 14.9 14.6 102
Younts Peak 8350 -M 12.4 * -M 13.4 *
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Basin Index (%) 113 116
POWDER RIVER
Bear Trap Meadow 8200 7.0 4.7 149 6.0 6.6 91
Cloud Peak Reservoir 9860 9.7 11.8 82 8.5 10.3 83
Grave Springs 8550 6.8 7.5 91 7.3 8.3 88
Hansen Sawmill 8360 4.6 5.2 88 6.1 6.5 94
Middle Powder 7760 8.1 8.8 92 4.2 9.3 45
Powder River Pass 9480 8.9 8.5 105 8.2 10.2 80
Soldier Park 8720 3.3 -M * 5.8 -M *
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Basin Index (%) 97 79
TONGUE RIVER
Big Goose 7990 6.5 6.9 94 8.3 8.4 99
Bone Springs Div 9350 11.5 13.3 86 9.8 12.6 78
Burgess Junction 7880 6.9 9.3 74 7.3 9.7 75
Dome Lake 8880 7.2 9.4 77 6.6 10.6 62
Little Goose 8870 7.6 -M * 6.5 -M *
Sucker Creek 8880 8.9 10.1 88 8.1 11.4 71
Tie Creek 6870 3.9 4.7 83 8.4 9.0 93
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Basin Index (%) 84 79
BELLE FOURCHE
Blind Park 6890 7.1 6.8 104 6.2 10.0 62
Cole Canyon 5910 5.7 5.1 112 9.8 7.4 132
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Basin Index (%) 108 92
CHEYENNE RIVER BASIN
Blind Park 6890 7.1 6.8 104 6.2 10.0 62
North Rapid Creek 6130 5.9 6.3 94 5.8 8.1 72
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Basin Index (%) 99 66
UPPER N. PLATTE
Arapaho Ridge 10960 22.5 17.7 127 22.6 18.8 120
Blackhall Mtn 9820 28.8 -M * 29.9 -M *
Columbine 9160 26.9 21.1 127 26.1 21.8 120
Divide Peak 8880 18.0 17.0 106 20.3 18.0 113
Joe Wright 10120 19.3 18.4 105 26.9 21.4 126
Laprele Creek 8375 10.3 8.5 121 10.9 10.1 108
Med Bow 10500 33.3 -M * 30.2 -M *
Never Summer 10280 19.6 17.0 115 16.5 -M *
North French Creek 10130 26.4 23.0 115 26.4 22.5 117
Old Battle 10000 32.5 25.6 127 31.1 29.8 104
Rawah 9020 12.6 9.3 135 15.1 11.5 131
Sage Creek Basin 7850 15.9 11.6 137 15.6 12.4 126
Sand Lake 10050 24.8 22.6 110 21.0 20.4 103
South Brush Creek 8440 10.1 11.1 91 10.5 12.6 83
Tower 10500 48.1 38.2 126 35.8 33.9 106
Webber Springs 9250 23.4 20.2 116 27.4 22.6 121
Whiskey Park 8950 -M 23.3 * -M 23.9 *
Willow Creek Pass 9540 13.6 10.3 132 15.0 11.0 136
Zirkel 9340 31.3 25.2 124 31.3 24.6 127
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Basin Index (%) 120 115
SWEETWATER
Deer Park 9700 14.6 12.1 121 15.7 16.3 96
Larsen Creek 9000 10.5 10.4 101 13.4 -M *
South Pass 9040 12.2 12.5 98 10.4 14.5 72
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Basin Index (%) 107 85
LOWER N. PLATTE
Casper Mtn. 7900 11.5 11.5 100 9.5 11.9 80
Laprele Creek 8375 10.3 8.5 121 10.9 10.1 108
Reno Hill 8400 12.2 11.2 109 13.0 12.0 108
Windy Peak 7900 8.0 6.6 121 8.4 8.5 99
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Basin Index (%) 111 98
LARAMIE RIVER
Brooklyn Lake 10240 21.2 16.8 126 22.2 17.4 128
Cinnabar Park 9574 18.7 17.8 105 21.0 20.6 102
Crow Creek 8330 4.3 7.1 61 8.2 8.4 98
Deadman Hill 10220 17.7 13.0 136 16.5 14.0 118
Rawah 9020 12.6 9.3 135 15.1 11.5 131
Roach 9700 15.5 13.4 116 18.8 15.9 118
Windy Peak 7900 8.0 6.6 121 8.4 8.5 99
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Basin Index (%) 117 114
S. PLATTE
Black Mountain 8920 9.2 -M * 10.0 -M *
Crow Creek 8330 4.3 7.1 61 8.2 8.4 98
Deadman Hill 10220 17.7 13.0 136 16.5 14.0 118
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Basin Index (%) 109 110
LITTLE SNAKE RIVER
Battle Mountain 7440 12.7 10.6 120 15.1 12.9 117
Divide Peak 8880 18.0 17.0 106 20.3 18.0 113
Elk River 8700 19.1 16.9 113 17.6 17.1 103
Little Snake River 8915 27.2 20.3 134 33.6 25.8 130
Old Battle 10000 32.5 25.6 127 31.1 29.8 104
Sage Creek Basin 7850 15.9 11.6 137 15.6 12.4 126
Sandstone RS 8150 16.5 11.8 140 17.1 16.0 107
Whiskey Park 8950 -M 23.3 * -M 23.9 *
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Basin Index (%) 125 114
UPPER GREEN RIVER
Big Sandy Opening 9080 12.7 10.8 118 13.4 11.2 120
Blind Bull Sum 8650 20.9 19.4 108 16.9 16.9 100
East Rim Divide 7930 10.1 9.4 107 10.3 10.2 101
Elkhart Park G.S. 9400 11.5 10.1 114 12.2 11.1 110
Gros Ventre Summit 8750 8.6 10.9 79 10.6 10.9 97
Gunsight Pass 9820 12.1 11.6 104 14.0 11.6 121
Indian Creek 9425 19.5 20.3 96 15.6 19.0 82
Kendall R.S. 7740 10.7 10.5 102 11.0 12.5 88
Loomis Park 8240 14.9 12.7 117 15.7 14.9 105
New Fork Lake 8340 9.1 9.0 101 8.4 9.3 90
Pocket Creek 9360 13.1 -M * 13.9 -M *
Snyder Basin 8060 10.8 10.6 102 12.3 12.2 101
Spring Creek Divide 9000 20.7 19.6 106 21.3 20.4 104
Triple Peak 8500 21.0 18.6 113 22.9 21.6 106
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Basin Index (%) 105 102
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.0 -M * 11.0 -M *
Buck Pasture 9632 13.4 -M * 16.1 -M *
EF Blacks Fork GS 9360 10.6 -M * 8.9 -M *
Hams Fork 7840 9.7 10.0 97 10.1 9.6 105
Hewinta 9500 9.9 8.6 115 12.3 11.5 107
Hickerson Park 9122 7.0 6.4 109 9.2 8.1 114
Hole-in-Rock 9168 5.8 6.1 95 8.8 7.6 116
Indian Creek 9425 19.5 20.3 96 15.6 19.0 82
Kelley R.S. 8180 12.8 12.7 101 13.3 15.4 86
Spirit Lk 10235 13.4 -M * 13.8 -M *
Steel Creek Park 10158 12.9 12.6 102 15.3 13.3 115
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Basin Index (%) 101 100
UPPER BEAR RIVER
Bear River RS 8777 10.0 -M * 12.9 -M *
Bug Lake 7987 20.8 16.1 129 20.6 16.4 126
Burts Miller Ranch 8000 7.0 -M * 7.4 -M *
Chalk Creek #1 9171 22.1 20.0 110 24.4 20.8 117
Hayden Fork 9130 16.2 13.4 121 20.7 17.4 119
Kelley R.S. 8180 12.8 12.7 101 13.3 15.4 86
Lily Lake 9133 10.9 11.1 98 14.1 14.1 100
Monte Cristo 8932 28.5 22.9 124 27.2 21.8 125
Salt River Summit 7640 12.1 11.2 108 13.8 14.2 97
Spring Creek Divide 9000 20.7 19.6 106 21.3 20.4 104
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Basin Index (%) 113 111
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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.