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 14 , 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 18.1 14.0 129 20.3 18.5 110
Black Bear 8170 40.5 31.9 127 39.6 33.5 118
Blind Bull Sum 8650 21.1 19.8 107 17.0 17.1 99
Cottonwood Creek 7670 19.2 18.7 103 22.4 21.1 106
East Rim Divide 7930 10.2 9.5 107 10.4 10.3 101
Grand Targhee 9260 38.9 32.4 120 29.1 26.1 111
Granite Creek 6770 18.6 14.8 126 19.6 17.7 111
Grassy Lake 7265 31.2 28.2 111 34.5 31.7 109
Gros Ventre Summit 8750 8.9 11.0 81 11.0 11.0 100
Gunsight Pass 9820 12.1 11.7 103 14.0 11.8 119
Lewis Lake Divide 7850 32.5 27.0 120 30.9 31.1 99
Phillips Bench 8200 27.2 21.6 126 -M 24.5 *
Salt River Summit 7640 12.4 11.5 108 14.1 14.4 98
Snake River Station 6920 19.8 15.2 130 24.1 19.9 121
Spring Creek Divide 9000 21.0 19.9 106 21.4 20.7 103
Thumb Divide 7980 17.3 13.5 128 16.3 16.0 102
Togwotee Pass 9580 22.1 19.8 112 22.6 21.0 108
Two Ocean Plateau 9240 27.9 23.4 119 21.9 23.6 93
Willow Creek 8080 27.8 24.5 113 30.9 29.0 107
Younts Peak 8350 -M 12.7 * -M 13.6 *
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Basin Index (%) 116 107
MADISON-GALLATIN
Black Bear 8170 40.5 31.9 127 39.6 33.5 118
Canyon 7870 12.6 11.6 109 14.5 14.2 102
Madison Plateau 7750 26.2 19.7 133 25.5 23.1 110
West Yellowstone 6700 13.9 9.9 140 16.1 12.5 129
Whiskey Creek 6800 18.4 13.5 136 18.9 17.6 107
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Basin Index (%) 129 114
YELLOWSTONE
Beartooth Lake 9360 18.4 18.6 99 17.1 17.1 100
Burnt Mtn 5880 8.0 4.4 182 12.1 10.4 116
Canyon 7870 12.6 11.6 109 14.5 14.2 102
Cole Creek 7850 14.0 11.4 123 -M 10.2 *
Evening Star 9200 23.5 21.4 110 25.7 23.6 109
Fisher Creek 9100 28.2 27.5 103 30.9 27.6 112
Northeast Entrance 7350 10.0 8.7 115 12.2 10.6 115
Parker Peak 9400 -M 17.0 * -M 15.2 *
Sylvan Lake 8420 19.4 17.3 112 24.7 19.3 128
Thumb Divide 7980 17.3 13.5 128 16.3 16.0 102
Two Ocean Plateau 9240 27.9 23.4 119 21.9 23.6 93
White Mill 8700 19.9 19.4 103 17.5 20.5 85
Wolverine 7650 11.7 8.9 131 11.4 10.6 108
Younts Peak 8350 -M 12.7 * -M 13.6 *
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Basin Index (%) 113 106
WIND RIVER
Burroughs Creek 8750 9.8 -M * 11.6 -M *
Castle Creek 8400 3.9 -M * 5.1 -M *
Cold Springs 9630 6.1 6.1 100 6.3 8.2 77
Deer Park 9700 15.0 12.3 122 15.9 16.6 96
Hobbs Park 10100 12.7 11.1 114 9.4 10.6 89
Kirwin 9550 9.3 8.0 116 9.6 9.6 100
Little Warm 9370 7.7 8.9 87 7.3 10.7 68
Owl Creek 8975 4.5 4.4 102 5.0 4.7 106
South Pass 9040 12.6 12.8 98 10.4 14.7 71
St. Lawrence Alt 8620 4.1 5.9 69 7.5 7.2 104
Togwotee Pass 9580 22.1 19.8 112 22.6 21.0 108
Townsend Creek 8700 8.2 7.6 108 8.7 9.5 92
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Basin Index (%) 106 91
BIGHORN BASIN
Bald Mtn. 9380 15.5 16.1 96 11.0 14.2 77
Bear Trap Meadow 8200 7.4 4.8 154 6.2 6.7 93
Bone Springs Div 9350 11.7 13.5 87 10.0 12.8 78
Grave Springs 8550 7.4 7.7 96 8.1 8.5 95
Kirwin 9550 9.3 8.0 116 9.6 9.6 100
Marquette 8760 6.4 -M * 7.8 -M *
Middle Powder 7760 8.5 9.0 94 4.4 9.5 46
Owl Creek 8975 4.5 4.4 102 5.0 4.7 106
Powder River Pass 9480 9.0 8.7 103 8.4 10.4 81
Shell Creek 9580 11.9 12.4 96 10.2 11.3 90
Timber Creek 7950 3.2 4.1 78 5.1 5.8 88
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Basin Index (%) 100 83
SHOSHONE RIVER
Blackwater 9780 21.3 19.5 109 21.7 17.5 124
Evening Star 9200 23.5 21.4 110 25.7 23.6 109
Marquette 8760 6.4 -M * 7.8 -M *
Sylvan Lake 8420 19.4 17.3 112 24.7 19.3 128
Sylvan Road 7120 11.9 10.1 118 15.1 14.7 103
Younts Peak 8350 -M 12.7 * -M 13.6 *
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Basin Index (%) 111 116
POWDER RIVER
Bear Trap Meadow 8200 7.4 4.8 154 6.2 6.7 93
Cloud Peak Reservoir 9860 10.5 12.1 87 9.1 10.6 86
Grave Springs 8550 7.4 7.7 96 8.1 8.5 95
Hansen Sawmill 8360 4.8 5.3 91 6.3 6.7 94
Middle Powder 7760 8.5 9.0 94 4.4 9.5 46
Powder River Pass 9480 9.0 8.7 103 8.4 10.4 81
Soldier Park 8720 3.6 -M * 6.1 -M *
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Basin Index (%) 100 81
TONGUE RIVER
Big Goose 7990 7.2 7.3 99 9.0 8.6 105
Bone Springs Div 9350 11.7 13.5 87 10.0 12.8 78
Burgess Junction 7880 7.5 9.4 80 7.6 9.9 77
Dome Lake 8880 8.0 9.6 83 7.0 10.8 65
Little Goose 8870 8.5 -M * 7.1 -M *
Sucker Creek 8880 9.8 10.3 95 8.7 11.6 75
Tie Creek 6870 4.3 4.7 91 8.7 9.2 95
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Basin Index (%) 89 81
BELLE FOURCHE
Blind Park 6890 8.6 7.0 123 7.0 10.2 69
Cole Canyon 5910 -M 5.3 * 10.7 7.6 141
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Basin Index (%) 123 99
CHEYENNE RIVER BASIN
Blind Park 6890 8.6 7.0 123 7.0 10.2 69
North Rapid Creek 6130 7.4 6.4 116 6.5 8.2 79
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Basin Index (%) 119 73
UPPER N. PLATTE
Arapaho Ridge 10960 24.2 17.9 135 23.9 18.9 126
Blackhall Mtn 9820 30.5 -M * 30.4 -M *
Columbine 9160 28.2 21.4 132 26.9 22.1 122
Divide Peak 8880 20.1 17.2 117 21.8 18.3 119
Joe Wright 10120 20.6 18.7 110 28.2 21.8 129
Laprele Creek 8375 12.3 8.8 140 12.5 10.3 121
Med Bow 10500 35.8 -M * 32.3 -M *
Never Summer 10280 21.0 17.3 121 17.7 -M *
North French Creek 10130 28.3 23.7 119 28.1 22.8 123
Old Battle 10000 34.5 26.0 133 31.1 30.3 103
Rawah 9020 14.3 9.2 155 16.6 11.6 143
Sage Creek Basin 7850 17.3 11.8 147 15.9 12.6 126
Sand Lake 10050 27.3 23.2 118 23.3 20.7 113
South Brush Creek 8440 11.3 11.2 101 11.4 12.8 89
Tower 10500 49.0 38.7 127 -M 34.4 *
Webber Springs 9250 25.8 20.4 126 29.7 23.0 129
Whiskey Park 8950 -M 23.7 * -M 24.2 *
Willow Creek Pass 9540 15.1 10.4 145 16.1 11.2 144
Zirkel 9340 32.3 25.4 127 31.3 24.8 126
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Basin Index (%) 127 121
SWEETWATER
Deer Park 9700 15.0 12.3 122 15.9 16.6 96
Larsen Creek 9000 10.6 10.6 100 13.5 -M *
South Pass 9040 12.6 12.8 98 10.4 14.7 71
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Basin Index (%) 107 84
LOWER N. PLATTE
Casper Mtn. 7900 14.1 11.7 121 10.7 12.2 88
Laprele Creek 8375 12.3 8.8 140 12.5 10.3 121
Reno Hill 8400 14.6 11.4 128 15.0 12.3 122
Windy Peak 7900 10.2 6.7 152 9.4 8.7 108
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Basin Index (%) 133 109
LARAMIE RIVER
Brooklyn Lake 10240 22.9 17.2 133 23.9 17.7 135
Cinnabar Park 9574 19.9 17.8 112 22.1 20.8 106
Crow Creek 8330 5.5 7.1 77 9.4 8.5 111
Deadman Hill 10220 19.7 13.3 148 18.3 14.3 128
Rawah 9020 14.3 9.2 155 16.6 11.6 143
Roach 9700 17.1 13.5 127 20.3 16.2 125
Windy Peak 7900 10.2 6.7 152 9.4 8.7 108
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Basin Index (%) 129 123
S. PLATTE
Black Mountain 8920 -M -M * 12.0 -M *
Crow Creek 8330 5.5 7.1 77 9.4 8.5 111
Deadman Hill 10220 19.7 13.3 148 18.3 14.3 128
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Basin Index (%) 124 121
LITTLE SNAKE RIVER
Battle Mountain 7440 13.3 10.8 123 15.7 13.1 120
Divide Peak 8880 20.1 17.2 117 21.8 18.3 119
Elk River 8700 20.0 17.1 117 18.3 17.3 106
Little Snake River 8915 28.2 20.5 138 35.1 26.1 134
Old Battle 10000 34.5 26.0 133 31.1 30.3 103
Sage Creek Basin 7850 17.3 11.8 147 15.9 12.6 126
Sandstone RS 8150 17.5 11.6 151 17.9 16.2 110
Whiskey Park 8950 -M 23.7 * -M 24.2 *
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Basin Index (%) 131 116
UPPER GREEN RIVER
Big Sandy Opening 9080 12.7 11.0 115 13.5 11.4 118
Blind Bull Sum 8650 21.1 19.8 107 17.0 17.1 99
East Rim Divide 7930 10.2 9.5 107 10.4 10.3 101
Elkhart Park G.S. 9400 11.6 10.3 113 12.4 11.4 109
Gros Ventre Summit 8750 8.9 11.0 81 11.0 11.0 100
Gunsight Pass 9820 12.1 11.7 103 14.0 11.8 119
Indian Creek 9425 19.7 20.6 96 15.9 19.3 82
Kendall R.S. 7740 10.7 10.8 99 11.0 12.6 87
Loomis Park 8240 15.0 12.9 116 15.8 15.1 105
New Fork Lake 8340 9.2 9.1 101 8.6 9.4 91
Pocket Creek 9360 13.2 -M * 13.9 -M *
Snyder Basin 8060 10.9 10.7 102 12.6 12.4 102
Spring Creek Divide 9000 21.0 19.9 106 21.4 20.7 103
Triple Peak 8500 21.1 18.9 112 23.1 21.9 105
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Basin Index (%) 105 101
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.6 -M * 11.5 -M *
Buck Pasture 9632 13.9 -M * 16.5 -M *
EF Blacks Fork GS 9360 11.2 -M * 9.4 -M *
Hams Fork 7840 9.9 10.0 99 10.2 9.7 105
Hewinta 9500 10.8 8.9 121 13.0 11.8 110
Hickerson Park 9122 7.8 6.6 118 9.9 8.4 118
Hole-in-Rock 9168 6.3 6.2 102 9.3 7.8 119
Indian Creek 9425 19.7 20.6 96 15.9 19.3 82
Kelley R.S. 8180 13.1 12.9 102 13.6 15.6 87
Spirit Lk 10235 14.0 -M * 14.3 -M *
Steel Creek Park 10158 13.9 12.9 108 16.0 13.7 117
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Basin Index (%) 104 102
UPPER BEAR RIVER
Bear River RS 8777 11.0 -M * 13.6 -M *
Bug Lake 7987 21.6 16.4 132 21.1 16.8 126
Burts Miller Ranch 8000 7.6 -M * 7.8 -M *
Chalk Creek #1 9171 23.3 20.4 114 25.9 21.3 122
Hayden Fork 9130 16.7 13.9 120 21.2 17.8 119
Kelley R.S. 8180 13.1 12.9 102 13.6 15.6 87
Lily Lake 9133 11.6 11.3 103 14.7 14.5 101
Monte Cristo 8932 29.3 23.3 126 28.1 22.3 126
Salt River Summit 7640 12.4 11.5 108 14.1 14.4 98
Spring Creek Divide 9000 21.0 19.9 106 21.4 20.7 103
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Basin Index (%) 115 112
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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.