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 SATURDAY: MARCH 2 , 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 17.4 109
Black Bear 8170 37.8 29.7 127 37.5 31.0 121
Blind Bull Sum 8650 19.4 18.0 108 15.8 16.0 99
Cottonwood Creek 7670 17.9 17.1 105 20.8 19.7 106
East Rim Divide 7930 9.5 8.2 116 9.7 9.6 101
Grand Targhee 9260 36.6 30.3 121 27.7 25.0 111
Granite Creek 6770 17.1 13.8 124 18.2 16.6 110
Grassy Lake 7265 28.9 26.3 110 32.2 29.6 109
Gros Ventre Summit 8750 8.4 9.8 86 10.0 10.2 98
Gunsight Pass 9820 11.4 10.6 108 13.3 10.9 122
Lewis Lake Divide 7850 30.3 25.2 120 30.2 29.0 104
Phillips Bench 8200 25.6 19.8 129 -M 22.9 *
Salt River Summit 7640 11.3 10.7 106 13.0 13.5 96
Snake River Station 6920 18.0 14.3 126 22.5 18.7 120
Spring Creek Divide 9000 19.4 18.7 104 20.1 19.3 104
Thumb Divide 7980 16.0 12.3 130 15.8 14.7 107
Togwotee Pass 9580 21.1 17.9 118 21.5 19.5 110
Two Ocean Plateau 9240 26.2 21.6 121 21.1 21.8 97
Willow Creek 8080 25.0 22.4 112 28.6 27.0 106
Younts Peak 8350 -M 11.7 * -M 12.7 *
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Basin Index (%) 117 108
MADISON-GALLATIN
Black Bear 8170 37.8 29.7 127 37.5 31.0 121
Canyon 7870 11.8 10.6 111 13.6 13.1 104
Madison Plateau 7750 24.7 17.9 138 24.0 21.3 113
West Yellowstone 6700 13.1 9.0 146 15.0 11.7 128
Whiskey Creek 6800 17.2 12.1 142 17.6 16.3 108
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Basin Index (%) 132 115
YELLOWSTONE
Beartooth Lake 9360 17.4 16.9 103 16.0 15.8 101
Burnt Mtn 5880 7.6 4.0 190 11.6 9.6 121
Canyon 7870 11.8 10.6 111 13.6 13.1 104
Cole Creek 7850 13.1 10.1 130 -M 9.1 *
Evening Star 9200 22.7 19.2 118 24.5 22.2 110
Fisher Creek 9100 26.7 25.9 103 29.2 25.7 114
Northeast Entrance 7350 9.5 8.3 114 11.6 9.9 117
Parker Peak 9400 20.5 16.1 127 20.3 14.1 144
Sylvan Lake 8420 18.1 15.9 114 23.4 18.0 130
Thumb Divide 7980 16.0 12.3 130 15.8 14.7 107
Two Ocean Plateau 9240 26.2 21.6 121 21.1 21.8 97
White Mill 8700 18.7 18.4 102 16.3 19.1 85
Wolverine 7650 11.1 8.5 131 11.0 10.0 110
Younts Peak 8350 -M 11.7 * -M 12.7 *
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Basin Index (%) 117 111
WIND RIVER
Burroughs Creek 8750 9.4 -M * 11.0 -M *
Castle Creek 8400 3.6 -M * 4.8 -M *
Cold Springs 9630 5.7 5.5 104 6.1 7.5 81
Deer Park 9700 14.0 10.8 130 15.0 15.4 97
Hobbs Park 10100 11.8 9.8 120 8.6 9.5 91
Kirwin 9550 8.7 7.0 124 9.0 8.8 102
Little Warm 9370 7.3 8.0 91 7.0 9.9 71
Owl Creek 8975 4.2 3.9 108 4.7 4.3 109
South Pass 9040 11.8 11.5 103 9.8 13.5 73
St. Lawrence Alt 8620 3.6 5.2 69 7.0 6.6 106
Togwotee Pass 9580 21.1 17.9 118 21.5 19.5 110
Townsend Creek 8700 7.4 6.6 112 8.3 8.7 95
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Basin Index (%) 111 94
BIGHORN BASIN
Bald Mtn. 9380 14.5 14.8 98 10.3 13.2 78
Bear Trap Meadow 8200 6.5 4.4 148 5.7 6.2 92
Bone Springs Div 9350 10.9 12.2 89 9.3 11.8 79
Grave Springs 8550 5.8 6.9 84 6.6 8.0 82
Kirwin 9550 8.7 7.0 124 9.0 8.8 102
Marquette 8760 5.7 -M * 7.2 -M *
Middle Powder 7760 7.2 8.1 89 4.0 8.8 45
Owl Creek 8975 4.2 3.9 108 4.7 4.3 109
Powder River Pass 9480 8.4 8.0 105 7.8 9.6 81
Shell Creek 9580 11.3 11.7 97 9.7 10.7 91
Timber Creek 7950 3.0 3.8 79 5.0 5.3 94
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Basin Index (%) 100 83
SHOSHONE RIVER
Blackwater 9780 19.9 17.3 115 20.1 16.2 124
Evening Star 9200 22.7 19.2 118 24.5 22.2 110
Marquette 8760 5.7 -M * 7.2 -M *
Sylvan Lake 8420 18.1 15.9 114 23.4 18.0 130
Sylvan Road 7120 10.9 9.5 115 14.2 13.9 102
Younts Peak 8350 -M 11.7 * -M 12.7 *
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Basin Index (%) 116 117
POWDER RIVER
Bear Trap Meadow 8200 6.5 4.4 148 5.7 6.2 92
Cloud Peak Reservoir 9860 9.4 10.4 90 8.2 9.6 85
Grave Springs 8550 5.8 6.9 84 6.6 8.0 82
Hansen Sawmill 8360 4.2 4.7 89 5.8 6.1 95
Middle Powder 7760 7.2 8.1 89 4.0 8.8 45
Powder River Pass 9480 8.4 8.0 105 7.8 9.6 81
Soldier Park 8720 2.9 -M * 5.4 -M *
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Basin Index (%) 98 79
TONGUE RIVER
Big Goose 7990 5.9 6.2 95 7.5 7.9 95
Bone Springs Div 9350 10.9 12.2 89 9.3 11.8 79
Burgess Junction 7880 6.5 8.3 78 6.8 9.0 76
Dome Lake 8880 6.7 8.7 77 6.1 10.0 61
Little Goose 8870 7.1 -M * 6.1 -M *
Sucker Creek 8880 8.5 9.0 94 7.7 10.7 72
Tie Creek 6870 3.5 4.3 81 6.9 8.5 81
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Basin Index (%) 86 77
BELLE FOURCHE
Blind Park 6890 7.0 6.4 109 6.3 9.5 66
Cole Canyon 5910 5.4 4.9 110 9.4 7.1 132
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Basin Index (%) 110 95
CHEYENNE RIVER BASIN
Blind Park 6890 7.0 6.4 109 6.3 9.5 66
North Rapid Creek 6130 5.7 5.9 97 5.7 7.7 74
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Basin Index (%) 103 70
UPPER N. PLATTE
Arapaho Ridge 10960 19.4 16.8 115 19.9 17.8 112
Blackhall Mtn 9820 24.7 -M * 26.3 -M *
Columbine 9160 22.5 19.9 113 22.9 20.4 112
Divide Peak 8880 15.9 15.9 100 18.6 16.8 111
Joe Wright 10120 15.7 16.8 93 23.2 20.0 116
Laprele Creek 8375 9.2 7.8 118 9.9 9.3 106
Med Bow 10500 29.0 -M * 27.1 -M *
Never Summer 10280 16.4 16.3 101 14.3 -M *
North French Creek 10130 22.8 21.1 108 23.5 21.1 111
Old Battle 10000 28.4 24.1 118 29.0 28.0 104
Rawah 9020 9.3 8.8 106 12.4 11.0 113
Sage Creek Basin 7850 14.6 10.6 138 14.3 11.8 121
Sand Lake 10050 21.9 21.2 103 18.1 19.0 95
South Brush Creek 8440 8.4 10.3 82 9.2 11.8 78
Tower 10500 40.7 36.5 112 34.9 32.0 109
Webber Springs 9250 20.3 18.8 108 24.3 21.2 115
Whiskey Park 8950 23.6 21.7 109 26.1 22.4 117
Willow Creek Pass 9540 11.4 9.6 119 13.1 10.4 126
Zirkel 9340 25.7 23.1 111 29.3 23.6 124
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Basin Index (%) 109 111
SWEETWATER
Deer Park 9700 14.0 10.8 130 15.0 15.4 97
Larsen Creek 9000 9.9 9.6 103 12.8 -M *
South Pass 9040 11.8 11.5 103 9.8 13.5 73
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Basin Index (%) 112 86
LOWER N. PLATTE
Casper Mtn. 7900 10.8 10.3 105 9.1 11.2 81
Laprele Creek 8375 9.2 7.8 118 9.9 9.3 106
Reno Hill 8400 11.2 10.2 110 12.1 11.1 109
Windy Peak 7900 7.0 5.8 121 7.7 7.8 99
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Basin Index (%) 112 98
LARAMIE RIVER
Brooklyn Lake 10240 18.0 15.1 119 19.3 16.1 120
Cinnabar Park 9574 16.3 17.2 95 18.8 19.8 95
Crow Creek 8330 3.4 6.7 51 7.1 7.8 91
Deadman Hill 10220 14.6 12.5 117 13.5 12.8 105
Rawah 9020 9.3 8.8 106 12.4 11.0 113
Roach 9700 12.5 12.5 100 15.4 14.7 105
Windy Peak 7900 7.0 5.8 121 7.7 7.8 99
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Basin Index (%) 103 105
S. PLATTE
Black Mountain 8920 7.6 -M * 8.5 -M *
Crow Creek 8330 3.4 6.7 51 7.1 7.8 91
Deadman Hill 10220 14.6 12.5 117 13.5 12.8 105
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Basin Index (%) 94 100
LITTLE SNAKE RIVER
Battle Mountain 7440 10.7 9.9 108 13.1 12.1 108
Divide Peak 8880 15.9 15.9 100 18.6 16.8 111
Elk River 8700 15.5 15.7 99 14.6 16.0 91
Little Snake River 8915 22.6 19.8 114 30.5 25.1 122
Old Battle 10000 28.4 24.1 118 29.0 28.0 104
Sage Creek Basin 7850 14.6 10.6 138 14.3 11.8 121
Sandstone RS 8150 13.7 10.5 130 14.7 15.1 97
Whiskey Park 8950 23.6 21.7 109 26.1 22.4 117
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Basin Index (%) 113 109
UPPER GREEN RIVER
Big Sandy Opening 9080 11.8 10.2 116 12.5 10.6 118
Blind Bull Sum 8650 19.4 18.0 108 15.8 16.0 99
East Rim Divide 7930 9.5 8.2 116 9.7 9.6 101
Elkhart Park G.S. 9400 10.8 9.5 114 11.4 10.6 108
Gros Ventre Summit 8750 8.4 9.8 86 10.0 10.2 98
Gunsight Pass 9820 11.4 10.6 108 13.3 10.9 122
Indian Creek 9425 17.9 19.0 94 14.4 17.9 80
Kendall R.S. 7740 10.0 9.8 102 10.4 11.7 89
Loomis Park 8240 13.9 11.8 118 14.8 14.1 105
New Fork Lake 8340 8.5 8.3 102 7.8 8.8 89
Pocket Creek 9360 12.1 -M * 13.1 -M *
Snyder Basin 8060 10.1 9.7 104 11.7 11.6 101
Spring Creek Divide 9000 19.4 18.7 104 20.1 19.3 104
Triple Peak 8500 19.8 17.0 116 21.8 20.3 107
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Basin Index (%) 106 101
LOWER GREEN RIVER
Blacks Fork Jct 8869 7.1 -M * 9.9 -M *
Buck Pasture 9632 12.0 -M * 14.8 -M *
EF Blacks Fork GS 9360 9.5 -M * 8.0 -M *
Hams Fork 7840 8.7 9.3 94 9.0 9.2 98
Hewinta 9500 8.4 8.0 105 11.2 10.9 103
Hickerson Park 9122 6.3 6.0 105 8.7 7.6 114
Hole-in-Rock 9168 5.1 5.6 91 8.1 7.1 114
Indian Creek 9425 17.9 19.0 94 14.4 17.9 80
Kelley R.S. 8180 11.4 12.2 93 12.0 14.6 82
Spirit Lk 10235 12.3 -M * 12.6 -M *
Steel Creek Park 10158 11.6 11.6 100 13.8 12.5 110
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Basin Index (%) 97 97
UPPER BEAR RIVER
Bear River RS 8777 8.6 -M * 11.6 -M *
Bug Lake 7987 18.4 14.9 123 18.7 15.5 121
Burts Miller Ranch 8000 5.6 -M * 6.9 -M *
Chalk Creek #1 9171 19.3 18.5 104 23.6 19.5 121
Hayden Fork 9130 13.9 12.2 114 18.7 16.4 114
Kelley R.S. 8180 11.4 12.2 93 12.0 14.6 82
Lily Lake 9133 9.8 10.4 94 12.8 13.3 96
Monte Cristo 8932 25.0 21.2 118 24.2 20.6 117
Salt River Summit 7640 11.3 10.7 106 13.0 13.5 96
Spring Creek Divide 9000 19.4 18.7 104 20.1 19.3 104
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Basin Index (%) 108 108
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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.