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 TUESDAY: APRIL 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 17.3 14.9 116 20.7 20.3 102
Black Bear 8170 41.7 36.6 114 40.9 36.8 111
Blind Bull Sum 8650 22.7 22.6 100 18.0 18.9 95
Cottonwood Creek 7670 20.1 21.3 94 24.4 23.8 103
East Rim Divide 7930 10.9 10.0 109 11.2 11.4 98
Grand Targhee 9260 40.6 36.9 110 30.1 29.9 101
Granite Creek 6770 18.6 14.8 126 19.7 19.2 103
Grassy Lake 7265 32.8 31.6 104 35.3 34.8 101
Gros Ventre Summit 8750 8.5 13.0 65 11.6 12.5 93
Gunsight Pass 9820 12.4 13.4 93 14.6 13.3 110
Lewis Lake Divide 7850 34.0 29.5 115 35.9 34.3 105
Phillips Bench 8200 28.2 24.4 116 30.5 27.3 112
Salt River Summit 7640 13.8 12.9 107 15.4 16.1 96
Snake River Station 6920 19.4 15.3 127 24.2 21.7 112
Spring Creek Divide 9000 22.3 22.5 99 22.6 23.1 98
Thumb Divide 7980 18.3 14.8 124 17.9 17.9 100
Togwotee Pass 9580 22.8 21.7 105 23.5 23.4 100
Two Ocean Plateau 9240 28.7 25.6 112 24.2 26.3 92
Willow Creek 8080 30.3 28.0 108 33.1 32.4 102
Younts Peak 8350 -M 14.2 * -M 15.2 *
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Basin Index (%) 108 102
MADISON-GALLATIN
Black Bear 8170 41.7 36.6 114 40.9 36.8 111
Canyon 7870 13.1 12.4 106 15.0 15.7 96
Madison Plateau 7750 26.5 21.4 124 26.1 25.4 103
West Yellowstone 6700 13.3 10.2 130 16.2 13.6 119
Whiskey Creek 6800 18.9 15.0 126 19.4 19.4 100
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Basin Index (%) 119 106
YELLOWSTONE
Beartooth Lake 9360 18.9 21.1 90 17.6 19.0 93
Burnt Mtn 5880 8.2 4.4 186 12.7 12.3 103
Canyon 7870 13.1 12.4 106 15.0 15.7 96
Cole Creek 7850 15.5 13.7 113 -M 12.1 *
Evening Star 9200 24.1 23.9 101 26.8 26.3 102
Fisher Creek 9100 29.1 30.4 96 31.9 30.5 105
Northeast Entrance 7350 9.6 9.5 101 12.5 11.8 106
Parker Peak 9400 22.1 18.9 117 22.5 17.0 132
Sylvan Lake 8420 20.2 19.2 105 25.7 21.5 120
Thumb Divide 7980 18.3 14.8 124 17.9 17.9 100
Two Ocean Plateau 9240 28.7 25.6 112 24.2 26.3 92
White Mill 8700 20.7 21.7 95 17.9 22.8 79
Wolverine 7650 11.3 9.2 123 12.0 11.8 102
Younts Peak 8350 -M 14.2 * -M 15.2 *
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Basin Index (%) 107 102
WIND RIVER
Burroughs Creek 8750 10.2 -M * 12.0 -M *
Castle Creek 8400 4.1 -M * 5.4 -M *
Cold Springs 9630 6.8 7.1 96 7.3 9.6 76
Deer Park 9700 15.5 14.8 105 17.1 18.8 91
Hobbs Park 10100 14.2 13.5 105 10.8 12.7 85
Kirwin 9550 10.1 9.5 106 10.5 11.1 95
Little Warm 9370 8.7 10.2 85 8.6 12.3 70
Owl Creek 8975 4.6 5.6 82 5.6 5.7 98
South Pass 9040 13.4 14.9 90 10.9 16.7 65
St. Lawrence Alt 8620 -M 6.8 * -M 8.6 *
Togwotee Pass 9580 22.8 21.7 105 23.5 23.4 100
Townsend Creek 8700 9.5 9.1 104 10.4 11.4 91
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Basin Index (%) 99 86
BIGHORN BASIN
Bald Mtn. 9380 16.1 18.8 86 11.8 16.4 72
Bear Trap Meadow 8200 7.1 5.1 139 6.6 8.1 81
Bone Springs Div 9350 12.4 16.1 77 10.9 14.9 73
Grave Springs 8550 8.1 9.0 90 8.9 10.1 88
Kirwin 9550 10.1 9.5 106 10.5 11.1 95
Marquette 8760 7.2 -M * 8.6 -M *
Middle Powder 7760 9.0 11.5 78 -M 11.2 *
Owl Creek 8975 4.6 5.6 82 5.6 5.7 98
Powder River Pass 9480 9.3 10.0 93 8.9 12.0 74
Shell Creek 9580 12.5 14.7 85 10.7 13.2 81
Timber Creek 7950 3.8 4.8 79 5.8 7.1 82
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Basin Index (%) 88 81
SHOSHONE RIVER
Blackwater 9780 22.4 22.2 101 22.7 19.8 115
Evening Star 9200 24.1 23.9 101 26.8 26.3 102
Marquette 8760 7.2 -M * 8.6 -M *
Sylvan Lake 8420 20.2 19.2 105 25.7 21.5 120
Sylvan Road 7120 10.3 11.1 93 15.2 16.1 94
Younts Peak 8350 -M 14.2 * -M 15.2 *
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Basin Index (%) 101 108
POWDER RIVER
Bear Trap Meadow 8200 7.1 5.1 139 6.6 8.1 81
Cloud Peak Reservoir 9860 11.4 14.2 80 10.1 12.7 80
Grave Springs 8550 8.1 9.0 90 8.9 10.1 88
Hansen Sawmill 8360 5.3 6.3 84 6.9 8.2 84
Middle Powder 7760 9.0 11.5 78 -M 11.2 *
Powder River Pass 9480 9.3 10.0 93 8.9 12.0 74
Soldier Park 8720 3.8 -M * 6.4 -M *
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Basin Index (%) 89 81
TONGUE RIVER
Big Goose 7990 7.6 9.1 84 9.4 10.8 87
Bone Springs Div 9350 12.4 16.1 77 10.9 14.9 73
Burgess Junction 7880 8.3 11.4 73 8.1 11.8 69
Dome Lake 8880 8.4 11.6 72 7.6 13.0 58
Little Goose 8870 8.6 -M * 7.4 -M *
Sucker Creek 8880 10.3 11.5 90 9.4 13.8 68
Tie Creek 6870 4.5 5.5 82 9.5 11.0 86
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Basin Index (%) 79 73
BELLE FOURCHE
Blind Park 6890 6.8 7.2 94 7.3 11.3 65
Cole Canyon 5910 6.8 5.8 117 10.8 8.9 121
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Basin Index (%) 105 90
CHEYENNE RIVER BASIN
Blind Park 6890 6.8 7.2 94 7.3 11.3 65
North Rapid Creek 6130 6.4 6.8 94 6.7 9.3 72
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Basin Index (%) 94 68
UPPER N. PLATTE
Arapaho Ridge 10960 25.2 20.0 126 25.4 21.5 118
Blackhall Mtn 9820 32.2 -M * 32.5 -M *
Columbine 9160 29.1 23.0 127 28.3 24.6 115
Divide Peak 8880 21.2 19.6 108 23.2 20.7 112
Joe Wright 10120 21.2 20.4 104 29.4 24.8 119
Laprele Creek 8375 13.3 9.5 140 14.2 11.9 119
Med Bow 10500 37.1 -M * 33.3 -M *
Never Summer 10280 22.3 19.8 113 18.5 -M *
North French Creek 10130 29.3 28.2 104 29.2 25.8 113
Old Battle 10000 35.6 30.0 119 35.9 33.9 106
Rawah 9020 14.4 10.4 138 17.3 13.7 126
Sage Creek Basin 7850 18.7 12.6 148 16.2 14.0 116
Sand Lake 10050 28.6 27.8 103 24.0 23.8 101
South Brush Creek 8440 11.6 12.2 95 12.0 14.7 82
Tower 10500 50.2 44.4 113 45.2 38.3 118
Webber Springs 9250 26.3 23.0 114 30.9 25.8 120
Whiskey Park 8950 31.2 26.1 120 32.1 27.0 119
Willow Creek Pass 9540 16.2 11.8 137 17.1 12.9 133
Zirkel 9340 33.3 26.4 126 36.7 27.5 133
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Basin Index (%) 117 116
SWEETWATER
Deer Park 9700 15.5 14.8 105 17.1 18.8 91
Larsen Creek 9000 10.5 12.1 87 13.7 -M *
South Pass 9040 13.4 14.9 90 10.9 16.7 65
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Basin Index (%) 94 79
LOWER N. PLATTE
Casper Mtn. 7900 15.7 13.6 115 12.1 14.1 86
Laprele Creek 8375 13.3 9.5 140 14.2 11.9 119
Reno Hill 8400 16.6 13.4 124 16.8 14.6 115
Windy Peak 7900 11.2 7.8 144 11.5 10.1 114
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Basin Index (%) 128 108
LARAMIE RIVER
Brooklyn Lake 10240 23.7 20.3 117 24.8 20.3 122
Cinnabar Park 9574 20.2 20.2 100 23.1 23.2 100
Crow Creek 8330 5.9 6.9 86 10.3 10.3 100
Deadman Hill 10220 21.0 15.7 134 19.4 16.5 118
Rawah 9020 14.4 10.4 138 17.3 13.7 126
Roach 9700 17.7 15.8 112 21.2 18.4 115
Windy Peak 7900 11.2 7.8 144 11.5 10.1 114
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Basin Index (%) 118 113
S. PLATTE
Black Mountain 8920 11.8 -M * 12.7 -M *
Crow Creek 8330 5.9 6.9 86 10.3 10.3 100
Deadman Hill 10220 21.0 15.7 134 19.4 16.5 118
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Basin Index (%) 119 111
LITTLE SNAKE RIVER
Battle Mountain 7440 13.1 10.5 125 16.2 14.6 111
Divide Peak 8880 21.2 19.6 108 23.2 20.7 112
Elk River 8700 19.8 18.7 106 19.1 19.4 98
Little Snake River 8915 29.1 23.5 124 36.9 28.8 128
Old Battle 10000 35.6 30.0 119 35.9 33.9 106
Sage Creek Basin 7850 18.7 12.6 148 16.2 14.0 116
Sandstone RS 8150 17.1 13.0 132 18.3 17.8 103
Whiskey Park 8950 31.2 26.1 120 32.1 27.0 119
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Basin Index (%) 121 112
UPPER GREEN RIVER
Big Sandy Opening 9080 13.2 12.4 106 14.0 12.7 110
Blind Bull Sum 8650 22.7 22.6 100 18.0 18.9 95
East Rim Divide 7930 10.9 10.0 109 11.2 11.4 98
Elkhart Park G.S. 9400 12.7 12.1 105 13.3 12.8 104
Gros Ventre Summit 8750 8.5 13.0 65 11.6 12.5 93
Gunsight Pass 9820 12.4 13.4 93 14.6 13.3 110
Indian Creek 9425 21.9 24.1 91 17.5 21.8 80
Kendall R.S. 7740 10.3 11.4 90 11.1 13.8 80
Loomis Park 8240 15.5 14.2 109 16.3 16.8 97
New Fork Lake 8340 10.0 10.4 96 9.3 10.4 89
Pocket Creek 9360 14.1 -M * 14.7 -M *
Snider Basin 8060 11.4 12.3 93 13.2 13.8 96
Spring Creek Divide 9000 22.3 22.5 99 22.6 23.1 98
Triple Peak 8500 22.9 21.8 105 24.3 24.5 99
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Basin Index (%) 97 96
LOWER GREEN RIVER
Blacks Fork Jct 8869 9.2 -M * 12.3 -M *
Buck Pasture 9632 15.0 -M * 18.0 -M *
EF Blacks Fork GS 9360 11.9 -M * 10.3 -M *
Hams Fork 7840 10.7 10.9 98 11.0 11.0 100
Hewinta 9500 12.7 10.9 117 14.0 13.5 104
Hickerson Park 9122 8.8 7.6 116 11.0 9.8 112
Hole-in-Rock 9168 6.5 6.9 94 10.0 9.2 109
Indian Creek 9425 21.9 24.1 91 17.5 21.8 80
Kelley R.S. 8180 14.9 15.0 99 15.2 17.5 87
Spirit Lk 10235 15.5 -M * 16.0 -M *
Steel Creek Park 10158 14.2 15.4 92 17.3 15.8 109
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Basin Index (%) 99 97
UPPER BEAR RIVER
Bear River RS 8777 11.3 -M * 14.5 -M *
Bug Lake 7987 23.2 18.2 127 22.8 18.8 121
Burts Miller Ranch 8000 7.6 -M * 8.3 -M *
Chalk Creek #1 9171 25.0 23.6 106 28.6 24.3 118
Hayden Fork 9130 16.8 15.2 111 22.3 20.3 110
Kelley R.S. 8180 14.9 15.0 99 15.2 17.5 87
Lily Lake 9133 12.5 12.2 102 15.7 16.5 95
Monte Cristo 8932 32.5 26.6 122 30.5 25.1 122
Salt River Summit 7640 13.8 12.9 107 15.4 16.1 96
Spring Creek Divide 9000 22.3 22.5 99 22.6 23.1 98
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Basin Index (%) 110 107
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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.