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 TUESDAY: MARCH 26 , 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 18.2 14.6 125 20.7 19.5 106
Black Bear 8170 41.2 34.2 120 40.6 35.4 115
Blind Bull Sum 8650 21.8 21.2 103 17.7 18.2 97
Cottonwood Creek 7670 19.3 20.5 94 23.2 22.9 101
East Rim Divide 7930 10.5 9.7 108 10.5 11.0 95
Grand Targhee 9260 40.3 34.2 118 30.0 28.1 107
Granite Creek 6770 18.8 14.8 127 19.7 18.6 106
Grassy Lake 7265 32.3 30.5 106 35.1 33.6 104
Gros Ventre Summit 8750 -M 12.1 * -M 11.9 *
Gunsight Pass 9820 12.3 12.7 97 14.3 12.6 113
Lewis Lake Divide 7850 33.2 28.8 115 35.7 33.1 108
Phillips Bench 8200 27.7 23.3 119 30.2 26.1 116
Salt River Summit 7640 13.2 12.4 106 14.7 15.5 95
Snake River Station 6920 19.8 15.7 126 24.2 21.0 115
Spring Creek Divide 9000 21.5 22.1 97 22.2 22.2 100
Thumb Divide 7980 18.0 14.9 121 17.7 17.1 104
Togwotee Pass 9580 22.8 21.2 108 23.3 22.4 104
Two Ocean Plateau 9240 28.4 24.8 115 24.1 25.2 96
Willow Creek 8080 29.3 25.8 114 31.8 31.0 103
Younts Peak 8350 -M 13.7 * -M 14.6 *
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Basin Index (%) 112 105
MADISON-GALLATIN
Black Bear 8170 41.2 34.2 120 40.6 35.4 115
Canyon 7870 13.0 12.0 108 14.8 15.0 99
Madison Plateau 7750 26.4 20.7 128 25.8 24.4 106
West Yellowstone 6700 13.6 10.1 135 16.0 13.0 123
Whiskey Creek 6800 18.7 14.5 129 19.2 18.7 103
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Basin Index (%) 123 109
YELLOWSTONE
Beartooth Lake 9360 18.8 20.3 93 17.5 18.2 96
Burnt Mtn 5880 7.9 4.7 168 12.1 11.2 108
Canyon 7870 13.0 12.0 108 14.8 15.0 99
Cole Creek 7850 14.3 12.7 113 -M 11.3 *
Evening Star 9200 24.1 23.3 103 26.6 25.2 106
Fisher Creek 9100 28.8 28.7 100 31.5 29.4 107
Northeast Entrance 7350 9.7 9.6 101 12.4 11.3 110
Parker Peak 9400 22.1 18.2 121 22.3 16.2 138
Sylvan Lake 8420 20.1 18.7 107 25.6 20.6 124
Thumb Divide 7980 18.0 14.9 121 17.7 17.1 104
Two Ocean Plateau 9240 28.4 24.8 115 24.1 25.2 96
White Mill 8700 20.4 20.9 98 17.8 21.9 81
Wolverine 7650 11.2 8.9 126 11.9 11.3 105
Younts Peak 8350 -M 13.7 * -M 14.6 *
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Basin Index (%) 109 105
WIND RIVER
Burroughs Creek 8750 10.2 -M * 12.0 -M *
Castle Creek 8400 4.2 -M * 5.4 -M *
Cold Springs 9630 6.6 6.8 97 6.7 9.0 74
Deer Park 9700 14.8 14.1 105 16.4 17.7 93
Hobbs Park 10100 13.0 12.7 102 10.0 11.6 86
Kirwin 9550 10.0 8.8 114 10.3 10.4 99
Little Warm 9370 8.4 9.8 86 8.3 11.7 71
Owl Creek 8975 4.5 4.8 94 5.2 5.3 98
South Pass 9040 12.6 14.4 88 10.6 15.9 67
St. Lawrence Alt 8620 4.2 6.5 65 7.6 7.9 96
Togwotee Pass 9580 22.8 21.2 108 23.3 22.4 104
Townsend Creek 8700 8.2 8.7 94 9.3 10.5 89
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Basin Index (%) 97 88
BIGHORN BASIN
Bald Mtn. 9380 15.7 17.0 92 11.7 15.4 76
Bear Trap Meadow 8200 7.2 5.2 138 6.6 7.5 88
Bone Springs Div 9350 12.2 14.5 84 10.7 14.0 76
Grave Springs 8550 7.7 8.4 92 8.6 9.3 92
Kirwin 9550 10.0 8.8 114 10.3 10.4 99
Marquette 8760 6.9 -M * 8.3 -M *
Middle Powder 7760 8.7 10.5 83 4.7 10.5 45
Owl Creek 8975 4.5 4.8 94 5.2 5.3 98
Powder River Pass 9480 9.0 9.6 94 8.3 11.4 73
Shell Creek 9580 12.3 13.5 91 10.6 12.4 85
Timber Creek 7950 3.4 4.2 81 5.3 6.5 82
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Basin Index (%) 94 80
SHOSHONE RIVER
Blackwater 9780 22.2 21.2 105 22.5 18.8 120
Evening Star 9200 24.1 23.3 103 26.6 25.2 106
Marquette 8760 6.9 -M * 8.3 -M *
Sylvan Lake 8420 20.1 18.7 107 25.6 20.6 124
Sylvan Road 7120 11.3 10.8 105 15.2 15.5 98
Younts Peak 8350 -M 13.7 * -M 14.6 *
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Basin Index (%) 105 112
POWDER RIVER
Bear Trap Meadow 8200 7.2 5.2 138 6.6 7.5 88
Cloud Peak Reservoir 9860 11.2 13.4 84 9.9 11.8 84
Grave Springs 8550 7.7 8.4 92 8.6 9.3 92
Hansen Sawmill 8360 5.2 6.0 87 6.8 7.6 89
Middle Powder 7760 8.7 10.5 83 4.7 10.5 45
Powder River Pass 9480 9.0 9.6 94 8.3 11.4 73
Soldier Park 8720 3.9 -M * 6.3 -M *
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Basin Index (%) 92 77
TONGUE RIVER
Big Goose 7990 7.4 8.2 90 9.2 9.6 96
Bone Springs Div 9350 12.2 14.5 84 10.7 14.0 76
Burgess Junction 7880 7.9 10.3 77 8.1 10.9 74
Dome Lake 8880 8.3 10.8 77 7.4 12.0 62
Little Goose 8870 8.5 -M * 7.2 -M *
Sucker Creek 8880 10.1 11.1 91 9.4 12.7 74
Tie Creek 6870 4.5 5.3 85 9.1 10.1 90
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Basin Index (%) 84 78
BELLE FOURCHE
Blind Park 6890 7.8 7.1 110 7.3 10.7 68
Cole Canyon 5910 6.6 5.7 116 10.8 8.2 132
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Basin Index (%) 112 96
CHEYENNE RIVER BASIN
Blind Park 6890 7.8 7.1 110 7.3 10.7 68
North Rapid Creek 6130 6.7 6.7 100 6.6 8.9 74
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Basin Index (%) 105 71
UPPER N. PLATTE
Arapaho Ridge 10960 25.1 18.7 134 25.3 20.3 125
Blackhall Mtn 9820 31.7 -M * 31.9 -M *
Columbine 9160 29.2 22.0 133 28.0 23.7 118
Divide Peak 8880 20.6 18.5 111 22.5 19.7 114
Joe Wright 10120 21.7 19.6 111 29.0 23.7 122
Laprele Creek 8375 12.8 9.4 136 13.2 11.2 118
Med Bow 10500 36.6 -M * 32.8 -M *
Never Summer 10280 22.1 18.6 119 18.5 -M *
North French Creek 10130 29.2 26.8 109 29.0 24.6 118
Old Battle 10000 35.1 27.8 126 35.7 32.4 110
Rawah 9020 15.1 9.9 153 17.2 12.8 134
Sage Creek Basin 7850 18.3 12.0 152 16.1 13.3 121
Sand Lake 10050 28.3 25.9 109 24.0 22.5 107
South Brush Creek 8440 11.9 11.7 102 12.0 13.9 86
Tower 10500 49.7 41.6 119 -M 36.8 *
Webber Springs 9250 26.1 22.0 119 30.4 24.6 124
Whiskey Park 8950 30.8 24.7 125 31.7 25.8 123
Willow Creek Pass 9540 16.1 11.3 142 17.0 12.1 140
Zirkel 9340 33.2 25.7 129 36.3 26.2 139
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Basin Index (%) 123 120
SWEETWATER
Deer Park 9700 14.8 14.1 105 16.4 17.7 93
Larsen Creek 9000 10.7 11.7 91 13.6 -M *
South Pass 9040 12.6 14.4 88 10.6 15.9 67
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Basin Index (%) 95 80
LOWER N. PLATTE
Casper Mtn. 7900 14.6 12.8 114 11.3 13.3 85
Laprele Creek 8375 12.8 9.4 136 13.2 11.2 118
Reno Hill 8400 15.1 12.5 121 15.7 13.7 115
Windy Peak 7900 10.8 7.6 142 11.0 9.5 116
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Basin Index (%) 126 107
LARAMIE RIVER
Brooklyn Lake 10240 23.6 18.5 128 24.6 19.2 128
Cinnabar Park 9574 20.0 19.4 103 22.7 22.2 102
Crow Creek 8330 5.9 6.9 86 9.9 9.7 102
Deadman Hill 10220 20.6 14.6 141 19.3 15.6 124
Rawah 9020 15.1 9.9 153 17.2 12.8 134
Roach 9700 17.5 14.5 121 20.8 17.5 119
Windy Peak 7900 10.8 7.6 142 11.0 9.5 116
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Basin Index (%) 124 118
S. PLATTE
Black Mountain 8920 11.5 -M * 12.4 -M *
Crow Creek 8330 5.9 6.9 86 9.9 9.7 102
Deadman Hill 10220 20.6 14.6 141 19.3 15.6 124
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Basin Index (%) 123 115
LITTLE SNAKE RIVER
Battle Mountain 7440 13.2 11.1 119 15.8 14.0 113
Divide Peak 8880 20.6 18.5 111 22.5 19.7 114
Elk River 8700 20.5 17.7 116 18.9 18.5 102
Little Snake River 8915 29.0 21.7 134 36.3 27.3 133
Old Battle 10000 35.1 27.8 126 35.7 32.4 110
Sage Creek Basin 7850 18.3 12.0 152 16.1 13.3 121
Sandstone RS 8150 17.6 12.9 136 18.2 17.1 106
Whiskey Park 8950 30.8 24.7 125 31.7 25.8 123
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Basin Index (%) 126 116
UPPER GREEN RIVER
Big Sandy Opening 9080 12.9 12.0 108 13.7 12.2 112
Blind Bull Sum 8650 21.8 21.2 103 17.7 18.2 97
East Rim Divide 7930 10.5 9.7 108 10.5 11.0 95
Elkhart Park G.S. 9400 11.9 11.4 104 12.6 12.3 102
Gros Ventre Summit 8750 -M 12.1 * -M 11.9 *
Gunsight Pass 9820 12.3 12.7 97 14.3 12.6 113
Indian Creek 9425 20.9 22.4 93 16.7 20.9 80
Kendall R.S. 7740 10.6 11.3 94 11.1 13.4 83
Loomis Park 8240 15.4 14.1 109 16.0 16.1 99
New Fork Lake 8340 9.4 9.8 96 8.8 10.1 87
Pocket Creek 9360 13.8 -M * 14.4 -M *
Snider Basin 8060 11.2 11.4 98 12.8 13.1 98
Spring Creek Divide 9000 21.5 22.1 97 22.2 22.2 100
Triple Peak 8500 21.7 20.4 106 23.5 23.5 100
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Basin Index (%) 101 97
LOWER GREEN RIVER
Blacks Fork Jct 8869 9.2 -M * 11.9 -M *
Buck Pasture 9632 14.4 -M * 17.1 -M *
EF Blacks Fork GS 9360 11.5 -M * 9.8 -M *
Hams Fork 7840 10.6 10.6 100 10.7 10.5 102
Hewinta 9500 12.2 10.0 122 13.5 12.8 105
Hickerson Park 9122 8.5 6.9 123 10.5 9.2 114
Hole-in-Rock 9168 6.6 6.9 96 9.7 8.6 113
Indian Creek 9425 20.9 22.4 93 16.7 20.9 80
Kelley R.S. 8180 14.2 14.2 100 14.5 16.8 86
Spirit Lk 10235 15.2 -M * 15.6 -M *
Steel Creek Park 10158 14.3 14.0 102 16.8 14.8 114
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Basin Index (%) 103 99
UPPER BEAR RIVER
Bear River RS 8777 11.5 -M * 13.8 -M *
Bug Lake 7987 22.6 17.4 130 22.0 17.9 123
Burts Miller Ranch 8000 7.6 -M * 8.0 -M *
Chalk Creek #1 9171 24.0 22.3 108 27.4 23.1 119
Hayden Fork 9130 17.2 14.6 118 21.7 19.3 112
Kelley R.S. 8180 14.2 14.2 100 14.5 16.8 86
Lily Lake 9133 12.0 11.7 103 15.1 15.6 97
Monte Cristo 8932 30.8 25.2 122 29.1 24.0 121
Salt River Summit 7640 13.2 12.4 106 14.7 15.5 95
Spring Creek Divide 9000 21.5 22.1 97 22.2 22.2 100
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Basin Index (%) 111 108
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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.