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 23 , 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 14.6 123 20.4 19.2 106
Black Bear 8170 40.6 33.1 123 40.2 34.9 115
Blind Bull Sum 8650 21.5 20.8 103 17.4 17.9 97
Cottonwood Creek 7670 19.1 20.3 94 22.7 22.3 102
East Rim Divide 7930 10.3 9.6 107 10.4 10.7 97
Grand Targhee 9260 39.3 33.4 118 29.4 27.4 107
Granite Creek 6770 18.8 14.7 128 19.6 18.3 107
Grassy Lake 7265 31.7 29.7 107 34.7 33.1 105
Gros Ventre Summit 8750 -M 11.8 * -M 11.6 *
Gunsight Pass 9820 12.0 12.3 98 14.1 12.2 116
Lewis Lake Divide 7850 32.7 28.2 116 35.7 32.5 110
Phillips Bench 8200 27.3 22.8 120 29.9 25.6 117
Salt River Summit 7640 12.7 12.2 104 14.4 15.2 95
Snake River Station 6920 19.4 15.5 125 24.3 20.6 118
Spring Creek Divide 9000 21.2 21.6 98 21.9 21.8 100
Thumb Divide 7980 17.8 14.4 124 17.6 16.7 105
Togwotee Pass 9580 22.1 20.9 106 22.7 22.0 103
Two Ocean Plateau 9240 28.1 24.4 115 23.8 24.8 96
Willow Creek 8080 28.3 25.3 112 31.2 30.4 103
Younts Peak 8350 -M 13.6 * -M 14.3 *
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Basin Index (%) 113 106
MADISON-GALLATIN
Black Bear 8170 40.6 33.1 123 40.2 34.9 115
Canyon 7870 12.7 11.8 108 14.7 14.7 100
Madison Plateau 7750 26.2 20.4 128 25.7 23.9 108
West Yellowstone 6700 13.7 10.0 137 16.1 12.8 126
Whiskey Creek 6800 18.6 14.4 129 19.1 18.3 104
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Basin Index (%) 125 111
YELLOWSTONE
Beartooth Lake 9360 18.6 19.8 94 17.5 18.0 97
Burnt Mtn 5880 7.9 4.7 168 12.1 11.0 110
Canyon 7870 12.7 11.8 108 14.7 14.7 100
Cole Creek 7850 14.1 12.3 115 -M 11.0 *
Evening Star 9200 23.7 22.7 104 26.3 24.8 106
Fisher Creek 9100 28.3 28.4 100 31.2 28.9 108
Northeast Entrance 7350 9.6 9.3 103 12.2 11.1 110
Parker Peak 9400 21.7 17.9 121 21.8 15.9 137
Sylvan Lake 8420 19.2 18.4 104 24.7 20.2 122
Thumb Divide 7980 17.8 14.4 124 17.6 16.7 105
Two Ocean Plateau 9240 28.1 24.4 115 23.8 24.8 96
White Mill 8700 19.9 20.4 98 17.7 21.5 82
Wolverine 7650 11.5 8.9 129 11.7 11.1 105
Younts Peak 8350 -M 13.6 * -M 14.3 *
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Basin Index (%) 109 106
WIND RIVER
Burroughs Creek 8750 10.0 -M * 11.8 -M *
Castle Creek 8400 3.9 -M * 5.2 -M *
Cold Springs 9630 6.4 6.6 97 6.7 8.7 77
Deer Park 9700 15.0 13.9 108 16.3 17.4 94
Hobbs Park 10100 13.0 12.2 107 9.9 11.3 88
Kirwin 9550 9.4 8.5 111 9.9 10.2 97
Little Warm 9370 8.0 9.4 85 8.0 11.3 71
Owl Creek 8975 4.4 4.7 94 5.1 5.1 100
South Pass 9040 12.7 14.3 89 10.7 15.5 69
St. Lawrence Alt 8620 4.2 6.4 66 7.5 7.7 97
Togwotee Pass 9580 22.1 20.9 106 22.7 22.0 103
Townsend Creek 8700 8.2 8.5 96 9.2 10.2 90
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Basin Index (%) 98 89
BIGHORN BASIN
Bald Mtn. 9380 15.5 16.6 93 11.7 15.1 77
Bear Trap Meadow 8200 7.5 5.2 144 6.7 7.3 92
Bone Springs Div 9350 12.0 14.2 85 10.7 13.6 79
Grave Springs 8550 7.6 8.3 92 8.6 9.2 93
Kirwin 9550 9.4 8.5 111 9.9 10.2 97
Marquette 8760 6.7 -M * 7.9 -M *
Middle Powder 7760 8.5 10.2 83 4.6 10.3 45
Owl Creek 8975 4.4 4.7 94 5.1 5.1 100
Powder River Pass 9480 9.0 9.4 96 8.8 11.1 79
Shell Creek 9580 12.3 13.1 94 10.6 12.1 88
Timber Creek 7950 3.2 4.1 78 5.1 6.3 81
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Basin Index (%) 95 82
SHOSHONE RIVER
Blackwater 9780 21.4 21.0 102 21.8 18.4 118
Evening Star 9200 23.7 22.7 104 26.3 24.8 106
Marquette 8760 6.7 -M * 7.9 -M *
Sylvan Lake 8420 19.2 18.4 104 24.7 20.2 122
Sylvan Road 7120 11.2 10.6 106 15.1 15.3 99
Younts Peak 8350 -M 13.6 * -M 14.3 *
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Basin Index (%) 104 112
POWDER RIVER
Bear Trap Meadow 8200 7.5 5.2 144 6.7 7.3 92
Cloud Peak Reservoir 9860 11.0 13.2 83 10.1 11.5 88
Grave Springs 8550 7.6 8.3 92 8.6 9.2 93
Hansen Sawmill 8360 4.9 5.8 84 6.5 7.4 88
Middle Powder 7760 8.5 10.2 83 4.6 10.3 45
Powder River Pass 9480 9.0 9.4 96 8.8 11.1 79
Soldier Park 8720 3.8 -M * 6.3 -M *
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Basin Index (%) 93 80
TONGUE RIVER
Big Goose 7990 7.5 8.0 94 9.1 9.4 97
Bone Springs Div 9350 12.0 14.2 85 10.7 13.6 79
Burgess Junction 7880 7.7 9.8 79 8.0 10.7 75
Dome Lake 8880 8.1 10.5 77 7.3 11.7 62
Little Goose 8870 8.6 -M * 7.1 -M *
Sucker Creek 8880 9.9 11.0 90 9.4 12.5 75
Tie Creek 6870 4.5 5.1 88 8.9 9.9 90
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Basin Index (%) 85 79
BELLE FOURCHE
Blind Park 6890 8.2 7.1 115 7.2 10.6 68
Cole Canyon 5910 6.7 5.6 120 10.7 8.0 134
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Basin Index (%) 117 96
CHEYENNE RIVER BASIN
Blind Park 6890 8.2 7.1 115 7.2 10.6 68
North Rapid Creek 6130 7.1 6.6 108 6.6 8.7 76
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Basin Index (%) 112 72
UPPER N. PLATTE
Arapaho Ridge 10960 24.7 18.2 136 24.9 19.9 125
Blackhall Mtn 9820 31.4 -M * 31.5 -M *
Columbine 9160 29.0 22.1 131 27.8 23.3 119
Divide Peak 8880 20.3 18.0 113 22.4 19.4 115
Joe Wright 10120 21.3 19.3 110 28.7 23.2 124
Laprele Creek 8375 12.7 9.3 137 13.1 11.0 119
Med Bow 10500 36.0 -M * 32.6 -M *
Never Summer 10280 21.8 18.2 120 18.2 -M *
North French Creek 10130 28.8 26.1 110 28.7 24.0 120
Old Battle 10000 34.8 27.1 128 35.3 31.9 111
Rawah 9020 14.9 9.7 154 17.1 12.4 138
Sage Creek Basin 7850 17.7 11.6 153 16.0 13.0 123
Sand Lake 10050 27.9 25.3 110 23.9 22.0 109
South Brush Creek 8440 11.5 11.3 102 11.9 13.6 88
Tower 10500 49.2 40.7 121 -M 36.2 *
Webber Springs 9250 25.8 21.5 120 30.2 24.2 125
Whiskey Park 8950 -M 24.5 * -M 25.3 *
Willow Creek Pass 9540 15.8 11.1 142 16.7 11.9 140
Zirkel 9340 32.8 25.5 129 36.0 25.6 141
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Basin Index (%) 123 121
SWEETWATER
Deer Park 9700 15.0 13.9 108 16.3 17.4 94
Larsen Creek 9000 10.3 11.4 90 13.5 -M *
South Pass 9040 12.7 14.3 89 10.7 15.5 69
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Basin Index (%) 96 82
LOWER N. PLATTE
Casper Mtn. 7900 14.3 12.6 113 11.1 13.0 85
Laprele Creek 8375 12.7 9.3 137 13.1 11.0 119
Reno Hill 8400 14.9 12.3 121 15.6 13.2 118
Windy Peak 7900 10.6 7.4 143 10.9 9.2 118
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Basin Index (%) 126 109
LARAMIE RIVER
Brooklyn Lake 10240 23.5 18.0 131 24.5 18.8 130
Cinnabar Park 9574 19.7 18.7 105 22.5 21.6 104
Crow Creek 8330 5.8 6.9 84 9.8 9.1 108
Deadman Hill 10220 20.5 14.2 144 19.2 15.2 126
Rawah 9020 14.9 9.7 154 17.1 12.4 138
Roach 9700 17.4 14.3 122 20.6 17.1 120
Windy Peak 7900 10.6 7.4 143 10.9 9.2 118
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Basin Index (%) 126 121
S. PLATTE
Black Mountain 8920 11.6 -M * 12.4 -M *
Crow Creek 8330 5.8 6.9 84 9.8 9.1 108
Deadman Hill 10220 20.5 14.2 144 19.2 15.2 126
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Basin Index (%) 125 119
LITTLE SNAKE RIVER
Battle Mountain 7440 13.3 11.3 118 15.8 13.7 115
Divide Peak 8880 20.3 18.0 113 22.4 19.4 115
Elk River 8700 20.2 17.5 115 18.9 18.2 104
Little Snake River 8915 28.3 21.4 132 36.1 26.8 135
Old Battle 10000 34.8 27.1 128 35.3 31.9 111
Sage Creek Basin 7850 17.7 11.6 153 16.0 13.0 123
Sandstone RS 8150 17.4 12.7 137 18.1 16.9 107
Whiskey Park 8950 -M 24.5 * -M 25.3 *
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Basin Index (%) 127 116
UPPER GREEN RIVER
Big Sandy Opening 9080 12.8 11.9 108 13.5 12.0 112
Blind Bull Sum 8650 21.5 20.8 103 17.4 17.9 97
East Rim Divide 7930 10.3 9.6 107 10.4 10.7 97
Elkhart Park G.S. 9400 11.8 11.0 107 12.5 12.0 104
Gros Ventre Summit 8750 -M 11.8 * -M 11.6 *
Gunsight Pass 9820 12.0 12.3 98 14.1 12.2 116
Indian Creek 9425 20.2 21.8 93 16.3 20.5 80
Kendall R.S. 7740 10.4 11.4 91 11.1 13.1 85
Loomis Park 8240 15.3 13.7 112 15.8 15.7 101
New Fork Lake 8340 9.2 9.5 97 8.7 9.8 89
Pocket Creek 9360 13.2 -M * 14.0 -M *
Snider Basin 8060 11.1 11.2 99 12.7 12.9 98
Spring Creek Divide 9000 21.2 21.6 98 21.9 21.8 100
Triple Peak 8500 21.3 20.0 106 23.3 23.1 101
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Basin Index (%) 101 98
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.8 -M * 11.8 -M *
Buck Pasture 9632 14.2 -M * 16.7 -M *
EF Blacks Fork GS 9360 11.5 -M * 9.8 -M *
Hams Fork 7840 10.2 10.5 97 10.4 10.3 101
Hewinta 9500 11.9 9.9 120 13.5 12.6 107
Hickerson Park 9122 8.1 6.8 119 10.4 9.1 114
Hole-in-Rock 9168 6.5 6.8 96 9.6 8.5 113
Indian Creek 9425 20.2 21.8 93 16.3 20.5 80
Kelley R.S. 8180 -M 13.8 * -M 16.5 *
Spirit Lk 10235 14.8 -M * 15.2 -M *
Steel Creek Park 10158 14.1 13.7 103 16.7 14.6 114
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Basin Index (%) 102 102
UPPER BEAR RIVER
Bear River RS 8777 11.2 -M * 13.8 -M *
Bug Lake 7987 22.4 17.0 132 21.7 17.7 123
Burts Miller Ranch 8000 7.7 -M * 7.9 -M *
Chalk Creek #1 9171 23.6 21.9 108 27.2 22.6 120
Hayden Fork 9130 16.4 14.5 113 21.5 18.9 114
Kelley R.S. 8180 -M 13.8 * -M 16.5 *
Lily Lake 9133 11.9 11.5 103 15.0 15.3 98
Monte Cristo 8932 29.9 24.9 120 28.5 23.5 121
Salt River Summit 7640 12.7 12.2 104 14.4 15.2 95
Spring Creek Divide 9000 21.2 21.6 98 21.9 21.8 100
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Basin Index (%) 112 111
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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.