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 THURSDAY: MARCH 7 , 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 17.9 13.7 131 19.5 17.9 109
Black Bear 8170 38.7 30.7 126 38.3 32.3 119
Blind Bull Sum 8650 20.3 18.9 107 16.5 16.5 100
Cottonwood Creek 7670 18.4 18.1 102 21.6 20.3 106
East Rim Divide 7930 10.1 9.0 112 10.3 10.0 103
Grand Targhee 9260 37.5 31.2 120 28.2 25.3 111
Granite Creek 6770 18.2 14.3 127 19.1 17.2 111
Grassy Lake 7265 30.2 27.1 111 33.3 30.6 109
Gros Ventre Summit 8750 8.6 10.6 81 10.4 10.6 98
Gunsight Pass 9820 11.9 11.2 106 13.8 11.3 122
Lewis Lake Divide 7850 31.7 25.8 123 30.5 30.1 101
Phillips Bench 8200 26.6 20.6 129 -M 23.7 *
Salt River Summit 7640 11.7 10.9 107 13.6 14.0 97
Snake River Station 6920 19.4 14.8 131 23.6 19.4 122
Spring Creek Divide 9000 20.3 19.4 105 21.0 20.0 105
Thumb Divide 7980 16.8 12.7 132 16.2 15.4 105
Togwotee Pass 9580 21.7 19.0 114 22.2 20.2 110
Two Ocean Plateau 9240 27.0 22.3 121 21.5 22.7 95
Willow Creek 8080 26.3 23.6 111 29.7 27.8 107
Younts Peak 8350 -M 12.1 * -M 13.1 *
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Basin Index (%) 117 108
MADISON-GALLATIN
Black Bear 8170 38.7 30.7 126 38.3 32.3 119
Canyon 7870 12.3 11.2 110 14.1 13.6 104
Madison Plateau 7750 25.3 18.6 136 24.7 22.2 111
West Yellowstone 6700 13.6 9.3 146 15.6 12.1 129
Whiskey Creek 6800 17.7 12.6 140 18.0 17.0 106
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Basin Index (%) 131 114
YELLOWSTONE
Beartooth Lake 9360 17.9 17.8 101 16.5 16.4 101
Burnt Mtn 5880 7.6 4.3 177 11.8 9.8 120
Canyon 7870 12.3 11.2 110 14.1 13.6 104
Cole Creek 7850 13.6 10.8 126 -M 9.5 *
Evening Star 9200 23.1 20.3 114 25.1 22.9 110
Fisher Creek 9100 27.3 26.5 103 30.1 26.5 114
Northeast Entrance 7350 9.9 8.6 115 12.0 10.3 117
Parker Peak 9400 -M 16.4 * -M 14.6 *
Sylvan Lake 8420 18.6 16.6 112 24.0 18.6 129
Thumb Divide 7980 16.8 12.7 132 16.2 15.4 105
Two Ocean Plateau 9240 27.0 22.3 121 21.5 22.7 95
White Mill 8700 19.4 18.8 103 17.0 19.8 86
Wolverine 7650 11.6 8.9 130 11.5 10.3 112
Younts Peak 8350 -M 12.1 * -M 13.1 *
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Basin Index (%) 115 107
WIND RIVER
Burroughs Creek 8750 9.9 -M * 11.6 -M *
Castle Creek 8400 3.9 -M * 5.2 -M *
Cold Springs 9630 5.9 5.7 104 6.3 7.8 81
Deer Park 9700 14.6 11.4 128 15.6 15.9 98
Hobbs Park 10100 12.1 10.6 114 9.3 10.1 92
Kirwin 9550 9.1 7.5 121 9.4 9.1 103
Little Warm 9370 7.7 8.4 92 7.7 10.3 75
Owl Creek 8975 4.4 4.2 105 5.0 4.5 111
South Pass 9040 12.2 12.2 100 10.4 14.2 73
St. Lawrence Alt 8620 3.8 5.7 67 7.2 6.8 106
Togwotee Pass 9580 21.7 19.0 114 22.2 20.2 110
Townsend Creek 8700 7.7 7.2 107 8.4 9.1 92
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Basin Index (%) 108 94
BIGHORN BASIN
Bald Mtn. 9380 14.7 15.6 94 10.7 13.6 79
Bear Trap Meadow 8200 7.0 4.6 152 6.2 6.4 97
Bone Springs Div 9350 11.2 13.0 86 9.7 12.3 79
Grave Springs 8550 6.4 7.2 89 7.3 8.2 89
Kirwin 9550 9.1 7.5 121 9.4 9.1 103
Marquette 8760 6.2 -M * 7.7 -M *
Middle Powder 7760 7.5 8.5 88 4.3 9.1 47
Owl Creek 8975 4.4 4.2 105 5.0 4.5 111
Powder River Pass 9480 8.6 8.2 105 8.1 10.0 81
Shell Creek 9580 11.7 12.1 97 10.0 11.0 91
Timber Creek 7950 3.1 4.0 78 5.0 5.4 93
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Basin Index (%) 99 84
SHOSHONE RIVER
Blackwater 9780 20.8 18.4 113 21.2 16.7 127
Evening Star 9200 23.1 20.3 114 25.1 22.9 110
Marquette 8760 6.2 -M * 7.7 -M *
Sylvan Lake 8420 18.6 16.6 112 24.0 18.6 129
Sylvan Road 7120 11.5 9.9 116 14.6 14.4 101
Younts Peak 8350 -M 12.1 * -M 13.1 *
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Basin Index (%) 113 117
POWDER RIVER
Bear Trap Meadow 8200 7.0 4.6 152 6.2 6.4 97
Cloud Peak Reservoir 9860 9.7 11.2 87 8.7 10.0 87
Grave Springs 8550 6.4 7.2 89 7.3 8.2 89
Hansen Sawmill 8360 4.5 4.9 92 6.0 6.4 94
Middle Powder 7760 7.5 8.5 88 4.3 9.1 47
Powder River Pass 9480 8.6 8.2 105 8.1 10.0 81
Soldier Park 8720 3.2 -M * 5.7 -M *
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Basin Index (%) 98 81
TONGUE RIVER
Big Goose 7990 6.2 6.5 95 8.4 8.2 102
Bone Springs Div 9350 11.2 13.0 86 9.7 12.3 79
Burgess Junction 7880 6.6 8.9 74 7.5 9.5 79
Dome Lake 8880 6.9 9.1 76 6.8 10.4 65
Little Goose 8870 7.5 -M * 6.3 -M *
Sucker Creek 8880 8.7 9.7 90 8.4 11.1 76
Tie Creek 6870 3.7 4.6 80 8.0 8.8 91
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Basin Index (%) 84 81
BELLE FOURCHE
Blind Park 6890 7.3 6.6 111 6.3 9.8 64
Cole Canyon 5910 5.4 4.9 110 9.6 7.3 132
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Basin Index (%) 110 93
CHEYENNE RIVER BASIN
Blind Park 6890 7.3 6.6 111 6.3 9.8 64
North Rapid Creek 6130 5.8 6.1 95 5.8 7.9 73
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Basin Index (%) 103 68
UPPER N. PLATTE
Arapaho Ridge 10960 21.1 17.3 122 21.4 18.3 117
Blackhall Mtn 9820 27.2 -M * 28.5 -M *
Columbine 9160 25.0 20.7 121 24.9 21.1 118
Divide Peak 8880 17.0 16.6 102 19.4 17.5 111
Joe Wright 10120 17.9 17.8 101 25.6 20.9 122
Laprele Creek 8375 9.9 8.0 124 10.4 9.8 106
Med Bow 10500 31.7 -M * 29.2 -M *
Never Summer 10280 18.6 16.6 112 15.7 -M *
North French Creek 10130 24.8 21.8 114 25.3 21.8 116
Old Battle 10000 30.8 24.9 124 30.4 29.0 105
Rawah 9020 12.0 9.0 133 14.6 11.3 129
Sage Creek Basin 7850 15.4 11.0 140 15.0 12.1 124
Sand Lake 10050 23.7 21.8 109 20.0 19.8 101
South Brush Creek 8440 9.6 10.9 88 10.2 12.2 84
Tower 10500 45.1 37.6 120 35.6 33.1 108
Webber Springs 9250 22.3 19.6 114 26.4 22.0 120
Whiskey Park 8950 26.0 22.6 115 28.4 23.2 122
Willow Creek Pass 9540 12.9 10.0 129 14.3 10.8 132
Zirkel 9340 29.1 24.5 119 31.1 23.8 131
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Basin Index (%) 116 115
SWEETWATER
Deer Park 9700 14.6 11.4 128 15.6 15.9 98
Larsen Creek 9000 10.7 10.0 107 13.5 -M *
South Pass 9040 12.2 12.2 100 10.4 14.2 73
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Basin Index (%) 112 86
LOWER N. PLATTE
Casper Mtn. 7900 11.2 11.1 101 9.3 11.6 80
Laprele Creek 8375 9.9 8.0 124 10.4 9.8 106
Reno Hill 8400 12.0 10.9 110 12.6 11.7 108
Windy Peak 7900 7.8 6.2 126 8.2 8.2 100
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Basin Index (%) 113 98
LARAMIE RIVER
Brooklyn Lake 10240 20.1 16.1 125 21.0 16.9 124
Cinnabar Park 9574 17.8 17.6 101 20.3 20.1 101
Crow Creek 8330 4.3 7.0 61 8.1 8.2 99
Deadman Hill 10220 17.0 12.7 134 15.8 13.5 117
Rawah 9020 12.0 9.0 133 14.6 11.3 129
Roach 9700 14.6 12.9 113 17.8 15.5 115
Windy Peak 7900 7.8 6.2 126 8.2 8.2 100
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Basin Index (%) 115 113
S. PLATTE
Black Mountain 8920 9.0 -M * 9.9 -M *
Crow Creek 8330 4.3 7.0 61 8.1 8.2 99
Deadman Hill 10220 17.0 12.7 134 15.8 13.5 117
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Basin Index (%) 108 110
LITTLE SNAKE RIVER
Battle Mountain 7440 11.9 10.2 117 14.4 12.6 114
Divide Peak 8880 17.0 16.6 102 19.4 17.5 111
Elk River 8700 17.4 16.5 105 16.2 16.6 98
Little Snake River 8915 25.3 20.1 126 32.3 25.5 127
Old Battle 10000 30.8 24.9 124 30.4 29.0 105
Sage Creek Basin 7850 15.4 11.0 140 15.0 12.1 124
Sandstone RS 8150 15.5 11.5 135 16.2 15.6 104
Whiskey Park 8950 26.0 22.6 115 28.4 23.2 122
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Basin Index (%) 119 113
UPPER GREEN RIVER
Big Sandy Opening 9080 12.6 10.5 120 13.4 10.9 123
Blind Bull Sum 8650 20.3 18.9 107 16.5 16.5 100
East Rim Divide 7930 10.1 9.0 112 10.3 10.0 103
Elkhart Park G.S. 9400 11.5 9.8 117 12.1 10.9 111
Gros Ventre Summit 8750 8.6 10.6 81 10.4 10.6 98
Gunsight Pass 9820 11.9 11.2 106 13.8 11.3 122
Indian Creek 9425 18.8 19.7 95 15.2 18.6 82
Kendall R.S. 7740 10.5 10.3 102 11.0 12.2 90
Loomis Park 8240 14.7 12.4 119 15.6 14.6 107
New Fork Lake 8340 9.1 8.7 105 8.3 9.1 91
Pocket Creek 9360 13.1 -M * 13.7 -M *
Snyder Basin 8060 10.7 10.4 103 12.3 12.0 102
Spring Creek Divide 9000 20.3 19.4 105 21.0 20.0 105
Triple Peak 8500 20.6 18.0 114 22.6 21.1 107
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Basin Index (%) 106 103
LOWER GREEN RIVER
Blacks Fork Jct 8869 7.6 -M * 10.4 -M *
Buck Pasture 9632 12.8 -M * 15.2 -M *
EF Blacks Fork GS 9360 10.2 -M * 8.5 -M *
Hams Fork 7840 9.3 9.8 95 9.7 9.5 102
Hewinta 9500 9.1 8.4 108 11.8 11.3 104
Hickerson Park 9122 6.6 6.2 106 8.9 8.0 111
Hole-in-Rock 9168 5.6 5.9 95 8.6 7.4 116
Indian Creek 9425 18.8 19.7 95 15.2 18.6 82
Kelley R.S. 8180 12.2 12.4 98 12.8 15.1 85
Spirit Lk 10235 12.7 -M * 13.1 -M *
Steel Creek Park 10158 12.0 12.2 98 14.5 12.9 112
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Basin Index (%) 99 98
UPPER BEAR RIVER
Bear River RS 8777 9.2 -M * 12.2 -M *
Bug Lake 7987 19.4 15.6 124 19.5 16.1 121
Burts Miller Ranch 8000 6.2 -M * 7.2 -M *
Chalk Creek #1 9171 20.7 19.2 108 24.2 20.4 119
Hayden Fork 9130 15.0 12.6 119 19.7 17.1 115
Kelley R.S. 8180 12.2 12.4 98 12.8 15.1 85
Lily Lake 9133 10.3 10.7 96 13.5 13.8 98
Monte Cristo 8932 26.1 22.3 117 25.2 21.3 118
Salt River Summit 7640 11.7 10.9 107 13.6 14.0 97
Spring Creek Divide 9000 20.3 19.4 105 21.0 20.0 105
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Basin Index (%) 110 108
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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.