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 9 , 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 13.8 132 20.2 18.1 112
Black Bear 8170 40.0 31.2 128 39.3 32.8 120
Blind Bull Sum 8650 20.9 19.1 109 16.9 16.8 101
Cottonwood Creek 7670 19.1 18.3 104 22.3 20.6 108
East Rim Divide 7930 10.2 9.3 110 10.3 10.1 102
Grand Targhee 9260 38.7 31.5 123 29.0 25.4 114
Granite Creek 6770 18.7 14.5 129 19.2 17.4 110
Grassy Lake 7265 31.2 27.3 114 34.0 31.0 110
Gros Ventre Summit 8750 8.8 10.7 82 10.7 10.8 99
Gunsight Pass 9820 12.1 11.5 105 14.0 11.5 122
Lewis Lake Divide 7850 32.5 26.1 125 30.8 30.5 101
Phillips Bench 8200 27.3 20.9 131 -M 24.0 *
Salt River Summit 7640 12.2 11.0 111 13.8 14.1 98
Snake River Station 6920 19.8 15.0 132 24.0 19.5 123
Spring Creek Divide 9000 20.7 19.5 106 21.3 20.3 105
Thumb Divide 7980 17.5 13.0 135 16.4 15.6 105
Togwotee Pass 9580 22.1 19.3 115 22.5 20.5 110
Two Ocean Plateau 9240 27.8 22.7 122 21.9 23.1 95
Willow Creek 8080 27.2 24.0 113 30.5 28.1 109
Younts Peak 8350 -M 12.2 * -M 13.3 *
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Basin Index (%) 118 108
MADISON-GALLATIN
Black Bear 8170 40.0 31.2 128 39.3 32.8 120
Canyon 7870 12.6 11.4 111 14.4 13.9 104
Madison Plateau 7750 26.0 19.0 137 25.2 22.6 112
West Yellowstone 6700 13.8 9.5 145 15.9 12.3 129
Whiskey Creek 6800 18.2 13.0 140 18.4 17.2 107
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Basin Index (%) 132 115
YELLOWSTONE
Beartooth Lake 9360 18.3 18.1 101 17.0 16.7 102
Burnt Mtn 5880 7.8 4.4 177 12.0 10.0 120
Canyon 7870 12.6 11.4 111 14.4 13.9 104
Cole Creek 7850 13.6 11.0 124 -M 9.8 *
Evening Star 9200 23.6 20.6 115 25.6 23.2 110
Fisher Creek 9100 28.0 26.7 105 30.8 26.9 114
Northeast Entrance 7350 10.0 8.6 116 12.2 10.4 117
Parker Peak 9400 -M 16.5 * -M 14.8 *
Sylvan Lake 8420 19.1 16.8 114 24.5 18.9 130
Thumb Divide 7980 17.5 13.0 135 16.4 15.6 105
Two Ocean Plateau 9240 27.8 22.7 122 21.9 23.1 95
White Mill 8700 19.8 19.0 104 17.4 20.1 87
Wolverine 7650 11.7 9.0 130 11.6 10.4 112
Younts Peak 8350 -M 12.2 * -M 13.3 *
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Basin Index (%) 116 108
WIND RIVER
Burroughs Creek 8750 9.9 -M * 11.7 -M *
Castle Creek 8400 3.9 -M * 5.2 -M *
Cold Springs 9630 6.0 5.8 103 6.3 7.9 80
Deer Park 9700 14.6 11.8 124 15.7 16.1 98
Hobbs Park 10100 12.2 10.8 113 9.2 10.2 90
Kirwin 9550 9.2 7.6 121 9.4 9.3 101
Little Warm 9370 7.9 8.6 92 7.7 10.4 74
Owl Creek 8975 4.4 4.3 102 5.0 4.5 111
South Pass 9040 12.3 12.4 99 10.4 14.4 72
St. Lawrence Alt 8620 3.8 5.8 66 7.2 6.9 104
Togwotee Pass 9580 22.1 19.3 115 22.5 20.5 110
Townsend Creek 8700 7.7 7.3 105 8.4 9.2 91
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Basin Index (%) 107 93
BIGHORN BASIN
Bald Mtn. 9380 14.9 15.9 94 10.7 13.8 78
Bear Trap Meadow 8200 7.1 4.6 154 6.2 6.5 95
Bone Springs Div 9350 11.5 13.2 87 9.8 12.4 79
Grave Springs 8550 6.8 7.3 93 7.5 8.2 91
Kirwin 9550 9.2 7.6 121 9.4 9.3 101
Marquette 8760 6.2 -M * 7.7 -M *
Middle Powder 7760 7.9 8.7 91 4.3 9.2 47
Owl Creek 8975 4.4 4.3 102 5.0 4.5 111
Powder River Pass 9480 8.9 8.3 107 8.2 10.1 81
Shell Creek 9580 12.0 12.2 98 10.1 11.1 91
Timber Creek 7950 3.2 4.0 80 5.1 5.5 93
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Basin Index (%) 100 84
SHOSHONE RIVER
Blackwater 9780 21.3 18.8 113 21.6 17.0 127
Evening Star 9200 23.6 20.6 115 25.6 23.2 110
Marquette 8760 6.2 -M * 7.7 -M *
Sylvan Lake 8420 19.1 16.8 114 24.5 18.9 130
Sylvan Road 7120 11.8 10.0 118 14.8 14.6 101
Younts Peak 8350 -M 12.2 * -M 13.3 *
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Basin Index (%) 115 117
POWDER RIVER
Bear Trap Meadow 8200 7.1 4.6 154 6.2 6.5 95
Cloud Peak Reservoir 9860 10.0 11.5 87 8.8 10.2 86
Grave Springs 8550 6.8 7.3 93 7.5 8.2 91
Hansen Sawmill 8360 4.6 5.1 90 6.2 6.5 95
Middle Powder 7760 7.9 8.7 91 4.3 9.2 47
Powder River Pass 9480 8.9 8.3 107 8.2 10.1 81
Soldier Park 8720 3.3 -M * 5.8 -M *
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Basin Index (%) 100 81
TONGUE RIVER
Big Goose 7990 6.5 6.7 97 8.2 8.3 99
Bone Springs Div 9350 11.5 13.2 87 9.8 12.4 79
Burgess Junction 7880 6.8 9.1 75 7.5 9.6 78
Dome Lake 8880 7.2 9.3 77 6.8 10.5 65
Little Goose 8870 7.7 -M * 6.5 -M *
Sucker Creek 8880 8.9 9.9 90 8.3 11.2 74
Tie Creek 6870 3.9 4.7 83 8.3 8.9 93
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Basin Index (%) 85 80
BELLE FOURCHE
Blind Park 6890 7.4 6.7 110 6.4 9.9 65
Cole Canyon 5910 5.7 5.0 114 9.8 7.3 134
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Basin Index (%) 112 94
CHEYENNE RIVER BASIN
Blind Park 6890 7.4 6.7 110 6.4 9.9 65
North Rapid Creek 6130 6.0 6.2 97 5.9 8.0 74
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Basin Index (%) 104 69
UPPER N. PLATTE
Arapaho Ridge 10960 22.2 17.5 127 22.3 18.5 121
Blackhall Mtn 9820 28.3 -M * 29.3 -M *
Columbine 9160 26.2 20.9 125 25.5 21.4 119
Divide Peak 8880 17.9 16.8 107 19.9 17.8 112
Joe Wright 10120 18.8 18.2 103 26.4 21.2 125
Laprele Creek 8375 10.3 8.3 124 10.8 9.9 109
Med Bow 10500 32.5 -M * 29.7 -M *
Never Summer 10280 19.4 16.8 115 16.4 -M *
North French Creek 10130 25.7 22.5 114 25.9 22.2 117
Old Battle 10000 32.1 25.3 127 30.8 29.4 105
Rawah 9020 12.6 9.2 137 15.1 11.4 132
Sage Creek Basin 7850 16.0 11.3 142 15.6 12.3 127
Sand Lake 10050 24.3 22.3 109 20.2 20.1 100
South Brush Creek 8440 9.9 11.1 89 10.4 12.4 84
Tower 10500 47.2 37.9 125 -M 33.6 *
Webber Springs 9250 23.2 20.0 116 27.3 22.3 122
Whiskey Park 8950 27.5 23.0 120 29.6 23.6 125
Willow Creek Pass 9540 13.4 10.2 131 14.9 10.9 137
Zirkel 9340 30.8 25.0 123 31.3 24.1 130
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Basin Index (%) 119 117
SWEETWATER
Deer Park 9700 14.6 11.8 124 15.7 16.1 98
Larsen Creek 9000 10.7 10.2 105 13.5 -M *
South Pass 9040 12.3 12.4 99 10.4 14.4 72
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Basin Index (%) 109 86
LOWER N. PLATTE
Casper Mtn. 7900 11.2 11.3 99 9.4 11.8 80
Laprele Creek 8375 10.3 8.3 124 10.8 9.9 109
Reno Hill 8400 12.1 11.1 109 12.7 11.9 107
Windy Peak 7900 8.1 6.4 127 8.4 8.4 100
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Basin Index (%) 112 98
LARAMIE RIVER
Brooklyn Lake 10240 20.9 16.5 127 21.7 17.2 126
Cinnabar Park 9574 18.5 17.7 105 20.7 20.6 100
Crow Creek 8330 4.4 7.0 63 8.3 8.4 99
Deadman Hill 10220 17.6 12.8 138 16.3 13.7 119
Rawah 9020 12.6 9.2 137 15.1 11.4 132
Roach 9700 15.3 13.2 116 18.7 15.7 119
Windy Peak 7900 8.1 6.4 127 8.4 8.4 100
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Basin Index (%) 118 114
S. PLATTE
Black Mountain 8920 9.2 -M * 10.0 -M *
Crow Creek 8330 4.4 7.0 63 8.3 8.4 99
Deadman Hill 10220 17.6 12.8 138 16.3 13.7 119
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Basin Index (%) 111 111
LITTLE SNAKE RIVER
Battle Mountain 7440 12.5 10.4 120 14.9 12.8 116
Divide Peak 8880 17.9 16.8 107 19.9 17.8 112
Elk River 8700 18.8 16.7 113 17.1 16.9 101
Little Snake River 8915 26.8 20.2 133 33.5 25.7 130
Old Battle 10000 32.1 25.3 127 30.8 29.4 105
Sage Creek Basin 7850 16.0 11.3 142 15.6 12.3 127
Sandstone RS 8150 16.2 11.8 137 16.8 15.8 106
Whiskey Park 8950 27.5 23.0 120 29.6 23.6 125
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Basin Index (%) 124 115
UPPER GREEN RIVER
Big Sandy Opening 9080 12.7 10.6 120 13.5 11.1 122
Blind Bull Sum 8650 20.9 19.1 109 16.9 16.8 101
East Rim Divide 7930 10.2 9.3 110 10.3 10.1 102
Elkhart Park G.S. 9400 11.6 10.0 116 12.3 11.1 111
Gros Ventre Summit 8750 8.8 10.7 82 10.7 10.8 99
Gunsight Pass 9820 12.1 11.5 105 14.0 11.5 122
Indian Creek 9425 19.5 20.0 98 15.6 18.8 83
Kendall R.S. 7740 10.8 10.4 104 11.2 12.4 90
Loomis Park 8240 15.0 12.5 120 15.8 14.8 107
New Fork Lake 8340 9.2 8.9 103 8.5 9.2 92
Pocket Creek 9360 13.2 -M * 14.0 -M *
Snyder Basin 8060 10.9 10.5 104 12.4 12.1 102
Spring Creek Divide 9000 20.7 19.5 106 21.3 20.3 105
Triple Peak 8500 21.0 18.3 115 23.0 21.4 107
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Basin Index (%) 107 103
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.0 -M * 10.8 -M *
Buck Pasture 9632 13.4 -M * 15.7 -M *
EF Blacks Fork GS 9360 10.6 -M * 8.9 -M *
Hams Fork 7840 9.8 9.9 99 10.1 9.6 105
Hewinta 9500 9.6 8.6 112 12.1 11.4 106
Hickerson Park 9122 6.8 6.3 108 9.1 8.0 114
Hole-in-Rock 9168 5.7 6.0 95 8.7 7.5 116
Indian Creek 9425 19.5 20.0 98 15.6 18.8 83
Kelley R.S. 8180 12.9 12.6 102 13.4 15.3 88
Spirit Lk 10235 13.2 -M * 13.6 -M *
Steel Creek Park 10158 12.7 12.4 102 15.0 13.1 115
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Basin Index (%) 102 100
UPPER BEAR RIVER
Bear River RS 8777 9.9 -M * 12.8 -M *
Bug Lake 7987 20.7 15.9 130 20.5 16.2 127
Burts Miller Ranch 8000 6.9 -M * 7.4 -M *
Chalk Creek #1 9171 21.8 19.6 111 24.4 20.6 118
Hayden Fork 9130 16.0 13.0 123 20.6 17.2 120
Kelley R.S. 8180 12.9 12.6 102 13.4 15.3 88
Lily Lake 9133 10.8 10.9 99 14.0 14.0 100
Monte Cristo 8932 28.3 22.7 125 25.7 21.5 120
Salt River Summit 7640 12.2 11.0 111 13.8 14.1 98
Spring Creek Divide 9000 20.7 19.5 106 21.3 20.3 105
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Basin Index (%) 115 110
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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.