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 4 , 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 17.1 13.6 126 19.0 17.5 109
Black Bear 8170 37.8 30.1 126 37.4 31.6 118
Blind Bull Sum 8650 19.3 18.3 105 15.7 16.3 96
Cottonwood Creek 7670 17.8 17.4 102 20.6 19.9 104
East Rim Divide 7930 9.3 8.5 109 9.5 9.7 98
Grand Targhee 9260 36.5 30.6 119 27.5 25.2 109
Granite Creek 6770 17.0 14.0 121 18.2 16.8 108
Grassy Lake 7265 28.9 26.6 109 32.2 30.0 107
Gros Ventre Summit 8750 8.3 10.1 82 9.9 10.3 96
Gunsight Pass 9820 11.3 10.8 105 13.2 11.0 120
Lewis Lake Divide 7850 30.2 25.4 119 30.2 29.4 103
Phillips Bench 8200 25.4 20.0 127 -M 23.2 *
Salt River Summit 7640 11.1 10.7 104 12.9 13.7 94
Snake River Station 6920 18.2 14.4 126 22.6 18.9 120
Spring Creek Divide 9000 19.2 19.0 101 19.8 19.6 101
Thumb Divide 7980 15.9 12.4 128 15.7 15.0 105
Togwotee Pass 9580 21.1 18.3 115 21.6 19.8 109
Two Ocean Plateau 9240 26.3 21.8 121 21.1 22.1 95
Willow Creek 8080 25.1 22.9 110 28.6 27.3 105
Younts Peak 8350 -M 11.8 * -M 12.9 *
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Basin Index (%) 115 106
MADISON-GALLATIN
Black Bear 8170 37.8 30.1 126 37.4 31.6 118
Canyon 7870 11.7 10.8 108 13.4 13.3 101
Madison Plateau 7750 24.6 18.1 136 23.7 21.7 109
West Yellowstone 6700 13.1 9.1 144 14.8 11.9 124
Whiskey Creek 6800 16.9 12.2 139 17.5 16.6 105
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Basin Index (%) 130 112
YELLOWSTONE
Beartooth Lake 9360 17.3 17.3 100 15.8 16.0 99
Burnt Mtn 5880 7.6 4.1 185 11.7 9.7 121
Canyon 7870 11.7 10.8 108 13.4 13.3 101
Cole Creek 7850 13.1 10.4 126 -M 9.3 *
Evening Star 9200 22.7 19.6 116 24.6 22.5 109
Fisher Creek 9100 26.6 26.1 102 29.1 26.0 112
Northeast Entrance 7350 9.6 8.4 114 11.4 10.0 114
Parker Peak 9400 20.3 16.2 125 20.2 14.3 141
Sylvan Lake 8420 18.2 16.1 113 23.3 18.3 127
Thumb Divide 7980 15.9 12.4 128 15.7 15.0 105
Two Ocean Plateau 9240 26.3 21.8 121 21.1 22.1 95
White Mill 8700 18.6 18.6 100 16.2 19.3 84
Wolverine 7650 11.1 8.6 129 10.7 10.1 106
Younts Peak 8350 -M 11.8 * -M 12.9 *
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Basin Index (%) 115 108
WIND RIVER
Burroughs Creek 8750 9.4 -M * 10.7 -M *
Castle Creek 8400 3.6 -M * 4.8 -M *
Cold Springs 9630 5.5 5.6 98 5.9 7.6 78
Deer Park 9700 14.0 10.9 128 14.9 15.5 96
Hobbs Park 10100 11.5 10.0 115 8.3 9.7 86
Kirwin 9550 8.6 7.2 119 8.7 8.9 98
Little Warm 9370 7.1 8.2 87 6.4 10.0 64
Owl Creek 8975 4.1 4.0 102 4.4 4.4 100
South Pass 9040 11.6 11.8 98 10.0 13.7 73
St. Lawrence Alt 8620 3.1 5.4 57 6.9 6.6 105
Togwotee Pass 9580 21.1 18.3 115 21.6 19.8 109
Townsend Creek 8700 7.2 6.8 106 8.0 8.8 91
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Basin Index (%) 106 91
BIGHORN BASIN
Bald Mtn. 9380 14.4 15.2 95 10.0 13.3 75
Bear Trap Meadow 8200 6.4 4.5 142 5.3 6.3 84
Bone Springs Div 9350 11.1 12.5 89 9.1 12.0 76
Grave Springs 8550 5.8 7.1 82 6.6 8.0 82
Kirwin 9550 8.6 7.2 119 8.7 8.9 98
Marquette 8760 5.7 -M * 7.1 -M *
Middle Powder 7760 7.0 8.3 84 3.5 8.9 39
Owl Creek 8975 4.1 4.0 102 4.4 4.4 100
Powder River Pass 9480 8.4 8.1 104 7.6 9.8 78
Shell Creek 9580 11.2 11.9 94 9.4 10.8 87
Timber Creek 7950 2.9 3.9 74 4.9 5.4 91
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Basin Index (%) 97 79
SHOSHONE RIVER
Blackwater 9780 19.9 17.7 112 20.1 16.4 123
Evening Star 9200 22.7 19.6 116 24.6 22.5 109
Marquette 8760 5.7 -M * 7.1 -M *
Sylvan Lake 8420 18.2 16.1 113 23.3 18.3 127
Sylvan Road 7120 10.9 9.7 112 14.2 14.1 101
Younts Peak 8350 -M 11.8 * -M 12.9 *
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Basin Index (%) 114 115
POWDER RIVER
Bear Trap Meadow 8200 6.4 4.5 142 5.3 6.3 84
Cloud Peak Reservoir 9860 9.3 10.6 88 7.7 9.8 79
Grave Springs 8550 5.8 7.1 82 6.6 8.0 82
Hansen Sawmill 8360 4.1 4.7 87 5.6 6.2 90
Middle Powder 7760 7.0 8.3 84 3.5 8.9 39
Powder River Pass 9480 8.4 8.1 104 7.6 9.8 78
Soldier Park 8720 2.2 -M * 5.2 -M *
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Basin Index (%) 95 74
TONGUE RIVER
Big Goose 7990 5.7 6.3 90 7.5 8.0 94
Bone Springs Div 9350 11.1 12.5 89 9.1 12.0 76
Burgess Junction 7880 6.5 8.6 76 6.6 9.2 72
Dome Lake 8880 6.4 8.8 73 6.0 10.1 59
Little Goose 8870 7.0 -M * 6.1 -M *
Sucker Creek 8880 8.3 9.2 90 7.2 10.8 67
Tie Creek 6870 3.3 4.4 75 7.5 8.6 87
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Basin Index (%) 83 75
BELLE FOURCHE
Blind Park 6890 7.0 6.4 109 5.8 9.6 60
Cole Canyon 5910 5.3 4.9 108 9.1 7.2 126
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Basin Index (%) 109 89
CHEYENNE RIVER BASIN
Blind Park 6890 7.0 6.4 109 5.8 9.6 60
North Rapid Creek 6130 5.5 6.0 92 5.5 7.7 71
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Basin Index (%) 101 65
UPPER N. PLATTE
Arapaho Ridge 10960 19.9 17.0 117 20.3 18.0 113
Blackhall Mtn 9820 25.5 -M * 27.0 -M *
Columbine 9160 23.3 20.2 115 23.3 20.6 113
Divide Peak 8880 16.0 16.3 98 18.9 17.0 111
Joe Wright 10120 16.9 17.1 99 24.5 20.2 121
Laprele Creek 8375 9.1 7.8 117 9.8 9.5 103
Med Bow 10500 29.4 -M * 27.5 -M *
Never Summer 10280 17.2 16.3 106 15.0 -M *
North French Creek 10130 23.4 21.3 110 24.1 21.3 113
Old Battle 10000 29.0 24.3 119 29.4 28.3 104
Rawah 9020 11.0 8.9 124 13.6 11.1 123
Sage Creek Basin 7850 14.4 10.7 135 14.2 11.9 119
Sand Lake 10050 22.3 21.4 104 18.6 19.1 97
South Brush Creek 8440 8.9 10.6 84 9.5 11.9 80
Tower 10500 42.6 36.9 115 35.2 32.4 109
Webber Springs 9250 20.7 19.0 109 24.6 21.4 115
Whiskey Park 8950 24.3 22.0 110 26.9 22.7 119
Willow Creek Pass 9540 12.1 9.7 125 13.7 10.5 130
Zirkel 9340 26.9 23.6 114 30.6 23.6 130
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Basin Index (%) 112 113
SWEETWATER
Deer Park 9700 14.0 10.9 128 14.9 15.5 96
Larsen Creek 9000 9.5 9.8 97 12.5 -M *
South Pass 9040 11.6 11.8 98 10.0 13.7 73
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Basin Index (%) 108 85
LOWER N. PLATTE
Casper Mtn. 7900 10.9 10.6 103 8.8 11.3 78
Laprele Creek 8375 9.1 7.8 117 9.8 9.5 103
Reno Hill 8400 10.9 10.5 104 11.5 11.3 102
Windy Peak 7900 6.6 5.9 112 7.3 7.9 92
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Basin Index (%) 108 94
LARAMIE RIVER
Brooklyn Lake 10240 18.4 15.5 119 19.8 16.3 121
Cinnabar Park 9574 16.7 17.4 96 19.2 19.8 97
Crow Creek 8330 3.8 6.8 56 7.6 7.9 96
Deadman Hill 10220 15.7 12.6 125 14.7 13.0 113
Rawah 9020 11.0 8.9 124 13.6 11.1 123
Roach 9700 13.2 12.6 105 16.2 14.9 109
Windy Peak 7900 6.6 5.9 112 7.3 7.9 92
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Basin Index (%) 107 108
S. PLATTE
Black Mountain 8920 8.4 -M * 9.3 -M *
Crow Creek 8330 3.8 6.8 56 7.6 7.9 96
Deadman Hill 10220 15.7 12.6 125 14.7 13.0 113
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Basin Index (%) 101 107
LITTLE SNAKE RIVER
Battle Mountain 7440 11.2 10.0 112 13.3 12.3 108
Divide Peak 8880 16.0 16.3 98 18.9 17.0 111
Elk River 8700 16.4 16.0 102 15.6 16.2 96
Little Snake River 8915 23.0 19.9 116 31.1 25.2 123
Old Battle 10000 29.0 24.3 119 29.4 28.3 104
Sage Creek Basin 7850 14.4 10.7 135 14.2 11.9 119
Sandstone RS 8150 14.1 10.9 129 15.1 15.3 99
Whiskey Park 8950 24.3 22.0 110 26.9 22.7 119
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Basin Index (%) 114 110
UPPER GREEN RIVER
Big Sandy Opening 9080 11.6 10.3 113 12.3 10.7 115
Blind Bull Sum 8650 19.3 18.3 105 15.7 16.3 96
East Rim Divide 7930 9.3 8.5 109 9.5 9.7 98
Elkhart Park G.S. 9400 10.6 9.6 110 11.4 10.7 107
Gros Ventre Summit 8750 8.3 10.1 82 9.9 10.3 96
Gunsight Pass 9820 11.3 10.8 105 13.2 11.0 120
Indian Creek 9425 17.7 19.2 92 14.2 18.2 78
Kendall R.S. 7740 9.8 9.9 99 10.2 11.9 86
Loomis Park 8240 13.9 12.0 116 14.7 14.3 103
New Fork Lake 8340 8.4 8.4 100 7.7 8.9 87
Pocket Creek 9360 12.0 -M * 12.9 -M *
Snyder Basin 8060 9.8 10.0 98 11.4 11.7 97
Spring Creek Divide 9000 19.2 19.0 101 19.8 19.6 101
Triple Peak 8500 19.7 17.4 113 21.7 20.6 105
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Basin Index (%) 103 99
LOWER GREEN RIVER
Blacks Fork Jct 8869 7.2 -M * 10.2 -M *
Buck Pasture 9632 12.3 -M * 15.1 -M *
EF Blacks Fork GS 9360 9.7 -M * 8.3 -M *
Hams Fork 7840 8.4 9.5 88 8.9 9.3 96
Hewinta 9500 8.7 8.1 107 11.4 11.0 104
Hickerson Park 9122 6.5 6.1 107 8.8 7.7 114
Hole-in-Rock 9168 5.3 5.7 93 8.2 7.2 114
Indian Creek 9425 17.7 19.2 92 14.2 18.2 78
Kelley R.S. 8180 11.2 12.2 92 11.8 14.8 80
Spirit Lk 10235 12.3 -M * 12.7 -M *
Steel Creek Park 10158 12.3 11.8 104 14.3 12.6 113
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Basin Index (%) 97 96
UPPER BEAR RIVER
Bear River RS 8777 9.0 -M * 11.9 -M *
Bug Lake 7987 18.4 15.2 121 18.7 15.8 118
Burts Miller Ranch 8000 6.1 -M * 7.0 -M *
Chalk Creek #1 9171 19.7 18.7 105 24.0 19.9 121
Hayden Fork 9130 14.5 12.4 117 19.3 16.7 116
Kelley R.S. 8180 11.2 12.2 92 11.8 14.8 80
Lily Lake 9133 10.1 10.6 95 13.3 13.5 99
Monte Cristo 8932 25.2 21.7 116 24.4 20.9 117
Salt River Summit 7640 11.1 10.7 104 12.9 13.7 94
Spring Creek Divide 9000 19.2 19.0 101 19.8 19.6 101
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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.