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 MONDAY: APRIL 15 , 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 18.8 13.2 142 23.4 21.3 110
Black Bear 8170 45.7 36.6 125 47.2 39.0 121
Blind Bull Sum 8650 25.8 23.8 108 20.1 19.8 102
Cottonwood Creek 7670 22.7 19.8 115 27.6 25.2 110
East Rim Divide 7930 10.8 10.0 108 12.6 11.9 106
Grand Targhee 9260 46.6 41.0 114 33.0 32.0 103
Granite Creek 6770 17.8 12.3 145 21.8 19.9 110
Grassy Lake 7265 35.0 31.5 111 39.9 36.6 109
Gros Ventre Summit 8750 8.0 13.0 62 13.0 13.3 98
Gunsight Pass 9820 14.2 13.4 106 16.6 14.3 116
Lewis Lake Divide 7850 -M 30.2 * 40.8 36.1 113
Phillips Bench 8200 31.1 26.0 120 34.2 28.6 120
Salt River Summit 7640 15.0 11.2 134 17.8 17.0 105
Snake River Station 6920 19.0 12.8 148 27.1 22.9 118
Spring Creek Divide 9000 24.6 23.2 106 25.0 24.3 103
Thumb Divide 7980 20.5 14.4 142 20.7 19.0 109
Togwotee Pass 9580 25.6 23.0 111 26.6 24.9 107
Two Ocean Plateau 9240 33.7 27.2 124 28.1 27.9 101
Willow Creek 8080 33.8 26.7 127 37.6 34.4 109
Younts Peak 8350 -M 14.7 * -M 16.2 *
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Basin Index (%) 118 110
MADISON-GALLATIN
Black Bear 8170 45.7 36.6 125 47.2 39.0 121
Canyon 7870 14.7 12.4 119 17.6 16.6 106
Madison Plateau 7750 32.1 22.5 143 30.2 26.8 113
West Yellowstone 6700 11.0 8.2 134 18.5 14.4 128
Whiskey Creek 6800 19.6 14.8 132 22.9 20.6 111
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Basin Index (%) 130 116
YELLOWSTONE
Beartooth Lake 9360 22.9 22.4 102 20.9 20.3 103
Burnt Mtn 5880 6.8 .2 3400* 14.6 13.5 108
Canyon 7870 14.7 12.4 119 17.6 16.6 106
Cole Creek 7850 18.1 15.6 116 -M 14.0 *
Evening Star 9200 28.1 24.7 114 30.6 28.1 109
Fisher Creek 9100 35.7 31.9 112 38.0 32.6 117
Northeast Entrance 7350 9.5 8.0 119 15.6 12.6 124
Parker Peak 9400 25.7 20.5 125 25.5 18.2 140
Sylvan Lake 8420 22.8 20.0 114 29.3 22.9 128
Thumb Divide 7980 20.5 14.4 142 20.7 19.0 109
Two Ocean Plateau 9240 33.7 27.2 124 28.1 27.9 101
White Mill 8700 26.5 23.5 113 22.4 24.4 92
Wolverine 7650 10.2 8.6 119 13.4 12.6 106
Younts Peak 8350 -M 14.7 * -M 16.2 *
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Basin Index (%) 120 111
WIND RIVER
Burroughs Creek 8750 13.6 -M * 14.5 -M *
Castle Creek 8400 3.8 -M * 6.9 -M *
Cold Springs 9630 7.7 5.8 133 8.6 10.4 83
Deer Park 9700 17.7 16.0 111 19.4 20.7 94
Hobbs Park 10100 17.1 14.9 115 13.7 14.2 96
Kirwin 9550 11.2 9.9 113 11.9 12.0 99
Little Warm 9370 10.3 10.2 101 10.1 13.4 75
Owl Creek 8975 4.7 5.1 92 7.2 6.4 112
South Pass 9040 16.0 15.8 101 13.1 18.0 73
St. Lawrence Alt 8620 -M 6.4 * -M 9.4 *
Togwotee Pass 9580 25.6 23.0 111 26.6 24.9 107
Townsend Creek 8700 11.4 10.0 114 12.7 12.8 99
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Basin Index (%) 110 93
BIGHORN BASIN
Bald Mtn. 9380 17.0 19.4 88 12.9 17.7 73
Bear Trap Meadow 8200 5.5 4.4 125 7.4 9.1 81
Bone Springs Div 9350 12.6 16.8 75 11.8 16.2 73
Grave Springs 8550 8.4 9.6 88 9.9 11.2 88
Kirwin 9550 11.2 9.9 113 11.9 12.0 99
Marquette 8760 8.1 -M * 10.0 -M *
Middle Powder 7760 8.2 12.4 66 8.4 12.3 68
Owl Creek 8975 4.7 5.1 92 7.2 6.4 112
Powder River Pass 9480 9.9 10.2 97 -M 13.2 *
Shell Creek 9580 13.4 15.5 86 11.0 14.3 77
Timber Creek 7950 3.2 5.2 62 6.9 7.9 87
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Basin Index (%) 87 82
SHOSHONE RIVER
Blackwater 9780 26.6 23.7 112 26.7 21.3 125
Evening Star 9200 28.1 24.7 114 30.6 28.1 109
Marquette 8760 8.1 -M * 10.0 -M *
Sylvan Lake 8420 22.8 20.0 114 29.3 22.9 128
Sylvan Road 7120 9.3 10.3 90 16.9 17.1 99
Younts Peak 8350 -M 14.7 * -M 16.2 *
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Basin Index (%) 110 116
POWDER RIVER
Bear Trap Meadow 8200 5.5 4.4 125 7.4 9.1 81
Cloud Peak Reservoir 9860 12.1 15.4 79 11.5 14.2 81
Grave Springs 8550 8.4 9.6 88 9.9 11.2 88
Hansen Sawmill 8360 5.9 5.9 100 8.3 9.1 91
Middle Powder 7760 8.2 12.4 66 8.4 12.3 68
Powder River Pass 9480 9.9 10.2 97 -M 13.2 *
Soldier Park 8720 3.6 -M * 7.5 -M *
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Basin Index (%) 86 81
TONGUE RIVER
Big Goose 7990 8.3 9.7 86 10.4 12.1 86
Bone Springs Div 9350 12.6 16.8 75 11.8 16.2 73
Burgess Junction 7880 8.9 12.1 74 9.1 13.0 70
Dome Lake 8880 7.8 12.0 65 8.8 14.3 62
Little Goose 8870 9.6 -M * 8.3 -M *
Sucker Creek 8880 10.9 12.6 87 10.3 15.1 68
Tie Creek 6870 4.0 4.8 83 11.1 12.3 90
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Basin Index (%) 77 74
BELLE FOURCHE
Blind Park 6890 3.8 5.1 75 8.0 12.4 65
Cole Canyon 5910 5.5 3.2 172 12.9 10.0 129
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Basin Index (%) 112 93
CHEYENNE RIVER BASIN
Blind Park 6890 3.8 5.1 75 8.0 12.4 65
North Rapid Creek 6130 4.6 5.5 84 7.6 10.4 73
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Basin Index (%) 79 68
UPPER N. PLATTE
Arapaho Ridge 10960 26.5 21.6 123 27.1 23.7 114
Blackhall Mtn 9820 34.2 -M * 35.1 -M *
Columbine 9160 27.5 21.8 126 29.8 26.4 113
Divide Peak 8880 22.2 20.0 111 24.3 22.2 109
Joe Wright 10120 23.4 22.1 106 31.0 26.9 115
Laprele Creek 8375 13.2 9.0 147 15.0 13.2 114
Med Bow 10500 39.4 -M * 35.4 -M *
Never Summer 10280 23.0 20.5 112 19.8 -M *
North French Creek 10130 30.5 31.8 96 31.3 27.8 113
Old Battle 10000 37.9 32.2 118 37.6 36.1 104
Rawah 9020 12.7 9.6 132 18.1 15.0 121
Sage Creek Basin 7850 18.9 8.8 215 16.8 15.0 112
Sand Lake 10050 30.6 30.4 101 25.3 25.9 98
South Brush Creek 8440 9.5 10.9 87 12.7 15.9 80
Tower 10500 53.2 47.4 112 45.6 41.1 111
Webber Springs 9250 27.1 23.3 116 32.5 27.7 117
Whiskey Park 8950 31.9 27.0 118 33.7 28.8 117
Willow Creek Pass 9540 16.9 12.7 133 18.3 14.0 131
Zirkel 9340 34.1 23.9 143 39.2 29.2 134
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Basin Index (%) 118 113
SWEETWATER
Deer Park 9700 17.7 16.0 111 19.4 20.7 94
Larsen Creek 9000 10.1 10.8 94 15.2 -M *
South Pass 9040 16.0 15.8 101 13.1 18.0 73
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Basin Index (%) 103 84
LOWER N. PLATTE
Casper Mtn. 7900 16.2 14.4 112 13.3 16.0 83
Laprele Creek 8375 13.2 9.0 147 15.0 13.2 114
Reno Hill 8400 17.3 14.1 123 18.1 16.5 110
Windy Peak 7900 10.3 7.4 139 12.2 11.2 109
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Basin Index (%) 127 103
LARAMIE RIVER
Brooklyn Lake 10240 25.3 22.2 114 26.7 22.1 121
Cinnabar Park 9574 21.1 21.0 100 24.5 24.9 98
Crow Creek 8330 5.1 4.1 124 11.4 11.5 99
Deadman Hill 10220 22.4 16.5 136 20.9 18.2 115
Rawah 9020 12.7 9.6 132 18.1 15.0 121
Roach 9700 18.3 16.5 111 22.6 20.0 113
Windy Peak 7900 10.3 7.4 139 12.2 11.2 109
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Basin Index (%) 118 111
S. PLATTE
Black Mountain 8920 12.8 -M * 14.3 -M *
Crow Creek 8330 5.1 4.1 124 11.4 11.5 99
Deadman Hill 10220 22.4 16.5 136 20.9 18.2 115
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Basin Index (%) 133 109
LITTLE SNAKE RIVER
Battle Mountain 7440 9.9 6.7 148 17.1 15.6 110
Divide Peak 8880 22.2 20.0 111 24.3 22.2 109
Elk River 8700 18.8 17.2 109 20.5 20.7 99
Little Snake River 8915 29.3 25.8 114 39.0 30.7 127
Old Battle 10000 37.9 32.2 118 37.6 36.1 104
Sage Creek Basin 7850 18.9 8.8 215 16.8 15.0 112
Sandstone RS 8150 14.7 11.8 125 19.1 19.0 101
Whiskey Park 8950 31.9 27.0 118 33.7 28.8 117
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Basin Index (%) 123 111
UPPER GREEN RIVER
Big Sandy Opening 9080 14.3 12.9 111 15.2 13.7 111
Blind Bull Sum 8650 25.8 23.8 108 20.1 19.8 102
East Rim Divide 7930 10.8 10.0 108 12.6 11.9 106
Elkhart Park G.S. 9400 14.1 12.0 118 14.5 13.7 106
Gros Ventre Summit 8750 8.0 13.0 62 13.0 13.3 98
Gunsight Pass 9820 14.2 13.4 106 16.6 14.3 116
Indian Creek 9425 24.6 23.9 103 19.5 23.1 84
Kendall R.S. 7740 10.5 9.8 107 12.4 14.4 86
Loomis Park 8240 16.1 13.6 118 17.7 17.6 101
New Fork Lake 8340 10.4 9.6 108 10.1 11.0 92
Pocket Creek 9360 15.3 -M * 15.9 -M *
Snider Basin 8060 11.0 11.6 95 13.8 14.5 95
Spring Creek Divide 9000 24.6 23.2 106 25.0 24.3 103
Triple Peak 8500 25.6 19.7 130 26.9 25.7 105
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Basin Index (%) 107 100
LOWER GREEN RIVER
Blacks Fork Jct 8869 9.7 -M * 14.4 -M *
Buck Pasture 9632 16.6 -M * 21.1 -M *
EF Blacks Fork GS 9360 13.4 -M * 13.0 -M *
Hams Fork 7840 9.7 8.6 113 12.2 11.7 104
Hewinta 9500 13.0 9.7 134 16.7 14.5 115
Hickerson Park 9122 10.3 6.6 156 13.0 10.7 121
Hole-in-Rock 9168 7.6 6.8 112 11.9 10.2 117
Indian Creek 9425 24.6 23.9 103 19.5 23.1 84
Kelley R.S. 8180 15.6 13.7 114 16.9 18.5 91
Spirit Lk 10235 17.6 -M * 18.5 -M *
Steel Creek Park 10158 -M 16.1 * 20.6 17.2 120
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Basin Index (%) 117 105
UPPER BEAR RIVER
Bear River RS 8777 10.9 -M * 16.8 -M *
Bug Lake 7987 24.9 19.0 131 24.7 19.9 124
Burts Miller Ranch 8000 5.7 -M * 9.8 -M *
Chalk Creek #1 9171 28.3 24.9 114 31.8 26.1 122
Hayden Fork 9130 17.1 13.9 123 25.1 21.8 115
Kelley R.S. 8180 15.6 13.7 114 16.9 18.5 91
Lily Lake 9133 14.5 12.4 117 17.9 17.8 101
Monte Cristo 8932 35.7 27.8 128 33.0 26.8 123
Salt River Summit 7640 15.0 11.2 134 17.8 17.0 105
Spring Creek Divide 9000 24.6 23.2 106 25.0 24.3 103
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Basin Index (%) 120 112
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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.