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 11 , 2016
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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 7030 13.3 14.7 90 20.2 21.0 96
Black Bear 8170 30.4 36.7 83 34.4 38.4 90
Blind Bull Sum 8650 25.4 23.5 108 16.7 19.6 85
Cottonwood Creek 7670 19.5 20.7 94 25.9 24.8 104
East Rim Divide 7930 7.3 10.2 72 11.0 11.8 93
Grand Targhee 9260 42.1 39.6 106 32.1 31.2 103
Granite Creek 6770 11.5 13.6 85 17.1 19.7 87
Grassy Lake 7265 28.8 31.4 92 35.3 36.1 98
Gros Ventre Summit 8750 10.6 12.8 83 10.9 13.1 83
Gunsight Pass 9820 13.1 13.8 95 14.8 14.1 105
Lewis Lake Divide 7850 27.4 30.2 91 32.2 35.6 90
Phillips Bench 8200 21.6 25.8 84 26.2 28.3 93
Salt River Summit 7760 11.2 12.3 91 15.5 16.8 92
Snake River Station 6920 13.8 14.2 97 22.9 22.6 101
Spring Creek Divide 9000 25.5 22.7 112 23.5 23.9 98
Thumb Divide 7980 11.5 14.6 79 15.3 18.8 81
Togwotee Pass 9580 20.7 22.6 92 24.7 24.5 101
Two Ocean Plateau 9240 26.8 26.6 101 25.1 27.4 92
Willow Creek 8380 26.1 27.8 94 32.4 33.9 96
Younts Peak 8350 12.2 14.5 84 13.5 15.9 85
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Basin Index (%) 93 94
MADISON-GALLATIN
Black Bear 8170 30.4 36.7 83 34.4 38.4 90
Canyon 7870 9.8 12.3 80 13.3 16.3 82
Madison Plateau 7750 21.1 22.0 96 22.6 26.4 86
West Yellowstone 6700 7.2 8.8 82 13.3 14.2 94
Whiskey Creek 6800 12.7 14.7 86 16.6 20.3 82
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Basin Index (%) 86 87
YELLOWSTONE
Beartooth Lake 9360 17.1 21.7 79 17.9 19.9 90
Burnt Mtn 5880 .0 3.0 0 10.9 13.2 83
Canyon 7870 9.8 12.3 80 13.3 16.3 82
Cole Creek 7850 10.8 15.2 71 12.0 13.3 90
Evening Star 9200 24.7 24.1 102 28.2 27.6 102
Fisher Creek 9100 28.4 31.5 90 26.2 31.8 82
Northeast Entrance 7350 5.1 8.6 59 11.6 12.3 94
Parker Peak 9400 20.5 20.0 102 20.9 17.8 117
Sylvan Lake 8420 16.1 19.7 82 23.3 22.5 104
Thumb Divide 7980 11.5 14.6 79 15.3 18.8 81
Two Ocean Plateau 9240 26.8 26.6 101 25.1 27.4 92
White Mill 8700 21.9 22.9 96 21.8 23.9 91
Wolverine 7650 8.3 9.4 88 12.0 12.3 98
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Basin Index (%) 88 93
WIND RIVER
Burroughs Creek 8750 9.2 -M * 12.8 -M *
Castle Creek 8400 1.4 -M * 6.4 -M *
Cold Springs 9630 7.8 6.3 124 10.1 10.2 99
Deer Park 9700 15.6 16.1 97 17.5 20.4 86
Hobbs Park 10100 15.6 14.6 107 15.5 13.8 112
Kirwin 9550 10.0 9.7 103 12.6 11.7 108
Little Warm 9370 8.4 10.2 82 11.5 13.0 88
Owl Creek 8975 3.8 5.7 67 5.5 6.2 89
South Pass 9040 13.9 15.6 89 13.1 17.7 74
St. Lawrence Alt 8620 5.9 6.9 86 9.5 9.2 103
Togwotee Pass 9580 20.7 22.6 92 24.7 24.5 101
Townsend Creek 8700 10.3 9.9 104 12.7 12.4 102
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Basin Index (%) 95 95
BIGHORN BASIN
Bald Mtn. 9380 15.0 19.3 78 12.0 17.3 69
Bear Trap Meadow 8200 5.7 4.7 121 6.6 8.8 75
Bone Springs Div 9350 12.0 17.0 71 10.7 15.8 68
Grave Springs 8550 7.2 9.5 76 6.4 11.0 58
Kirwin 9550 10.0 9.7 103 12.6 11.7 108
Marquette 8760 6.8 -M * 11.0 -M *
Middle Powder 7760 10.1 12.3 82 7.8 12.0 65
Owl Creek 8975 3.8 5.7 67 5.5 6.2 89
Powder River Pass 9480 7.5 10.3 73 8.7 12.9 67
Shell Creek 9580 11.3 15.5 73 10.3 14.0 74
Timber Creek 7950 5.2 5.1 102 10.5 7.6 138
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Basin Index (%) 80 78
SHOSHONE RIVER
Blackwater 9780 22.3 23.1 97 24.7 20.8 119
Evening Star 9200 24.7 24.1 102 28.2 27.6 102
Marquette 8760 6.8 -M * 11.0 -M *
Sylvan Road 7120 -M 10.4 * 15.3 16.8 91
Younts Peak 8350 12.2 14.5 84 13.5 15.9 85
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Basin Index (%) 96 101
POWDER RIVER
Bear Trap Meadow 8200 5.7 4.7 121 6.6 8.8 75
Cloud Peak Reservoir 9860 10.8 15.2 71 12.4 13.7 91
Grave Springs 8550 7.2 9.5 76 6.4 11.0 58
Hansen Sawmill 8360 5.6 6.1 92 7.7 8.8 88
Middle Powder 7760 10.1 12.3 82 7.8 12.0 65
Powder River Pass 9480 7.5 10.3 73 8.7 12.9 67
Soldier Park 8720 3.1 -M * 7.5 -M *
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Basin Index (%) 81 74
TONGUE RIVER
Big Goose 7990 7.0 9.9 71 8.4 11.9 71
Bone Springs Div 9350 12.0 17.0 71 10.7 15.8 68
Burgess Junction 7880 8.6 12.2 70 9.3 12.7 73
Dome Lake 8880 8.5 11.9 71 9.2 14.0 66
Little Goose 8870 7.9 -M * 10.3 -M *
Sucker Creek 8880 8.8 12.5 70 10.2 14.8 69
Tie Creek 6870 .8 5.3 15 8.5 12.1 70
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Basin Index (%) 66 69
BELLE FOURCHE
Cole Canyon 5910 1.5 4.3 35 9.5 9.7 98
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Basin Index (%) 35 98
CHEYENNE RIVER BASIN
Blind Park 6890 .8 6.4 12 10.5 12.2 86
North Rapid Creek 6130 1.0 6.2 16 8.3 10.2 81
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Basin Index (%) 14 84
UPPER N. PLATTE
Arapaho Ridge 10960 24.1 21.3 113 24.6 23.2 106
Blackhall Mtn 9820 31.1 -M * 30.3 -M *
Columbine 9160 23.2 23.0 101 26.4 25.9 102
Divide Peak 8880 19.0 20.3 94 23.6 21.8 108
Joe Wright 10120 18.0 21.8 83 26.2 26.2 100
Laprele Creek 8375 9.0 9.4 96 11.5 12.8 90
Med Bow 10500 36.3 -M * 31.5 -M *
North French Creek 10130 26.7 30.7 87 26.3 27.2 97
Never Summer 10280 20.7 20.5 101 17.9 -M *
Old Battle 10000 30.6 31.9 96 28.7 35.5 81
Rawah 9020 12.5 10.4 120 18.7 14.8 126
Sage Creek Basin 7850 12.5 10.8 116 13.0 14.9 87
Sand Lake 10050 27.7 29.8 93 26.4 25.2 105
South Brush Creek 8440 10.0 11.6 86 14.6 15.6 94
Tower 10500 39.5 46.9 84 38.2 40.3 95
Webber Springs 9250 21.7 23.3 93 25.5 27.1 94
Willow Creek Pass 9540 16.3 12.5 130 16.3 13.7 119
Zirkel 9340 27.0 25.5 106 30.9 29.0 107
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Basin Index (%) 97 99
SWEETWATER
Deer Park 9700 15.6 16.1 97 17.5 20.4 86
Larsen Creek 9000 8.2 11.2 73 13.3 -M *
South Pass 9040 13.9 15.6 89 13.1 17.7 74
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Basin Index (%) 88 80
LOWER N. PLATTE
Casper Mtn. 7900 16.5 14.5 114 15.1 15.4 98
Laprele Creek 8375 9.0 9.4 96 11.5 12.8 90
Reno Hill 8400 15.4 14.2 108 18.6 15.9 117
Windy Peak 7900 8.6 7.6 113 10.9 10.8 101
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Basin Index (%) 108 102
LARAMIE RIVER
Brooklyn Lake 10240 23.9 22.3 107 23.4 21.5 109
Cinnabar Park 9574 19.0 21.4 89 22.9 24.6 93
Crow Creek 8330 7.8 6.3 124 14.7 11.2 131
Deadman Hill 10220 20.9 16.5 127 20.1 17.7 114
Rawah 9020 12.5 10.4 120 18.7 14.8 126
Roach 9700 17.3 16.6 104 20.4 19.6 104
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Basin Index (%) 108 110
S. PLATTE
Black Mountain 8920 12.9 -M * 17.3 -M *
Crow Creek 8330 7.8 6.3 124 14.7 11.2 131
Deadman Hill 10220 20.9 16.5 127 20.1 17.7 114
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Basin Index (%) 126 120
LITTLE SNAKE RIVER
Battle Mountain 7440 8.6 8.4 102 16.1 15.2 106
Divide Peak 8880 19.0 20.3 94 23.6 21.8 108
Elk River 8700 14.2 18.4 77 18.6 20.4 91
Little Snake River 8915 23.2 26.0 89 31.9 30.5 105
Old Battle 10000 30.6 31.9 96 28.7 35.5 81
Sage Creek Basin 7850 12.5 10.8 116 13.0 14.9 87
Sandstone RS 8150 9.5 12.6 75 12.2 18.6 66
Whiskey Park 8950 26.6 27.6 96 27.8 28.3 98
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Basin Index (%) 92 93
UPPER GREEN RIVER
Big Sandy Opening 9080 10.1 12.9 78 11.6 13.5 86
Blind Bull Sum 8650 25.4 23.5 108 16.7 19.6 85
East Rim Divide 7930 7.3 10.2 72 11.0 11.8 93
Elkhart Park G.S. 9400 8.7 12.3 71 11.3 13.4 84
Gros Ventre Summit 8750 10.6 12.8 83 10.9 13.1 83
Gunsight Pass 9820 13.1 13.8 95 14.8 14.1 105
Kendall R.S. 7740 -M 10.9 * 11.8 14.3 83
Loomis Park 8240 11.8 13.7 86 16.4 17.4 94
New Fork Lake 8340 7.1 10.1 70 11.2 10.9 103
Pocket Creek 9360 7.3 -M * 9.5 -M *
Snider Basin 8060 13.0 12.2 107 14.2 14.3 99
Spring Creek Divide 9000 25.5 22.7 112 23.5 23.9 98
Triple Peak 8500 24.0 21.0 114 27.2 25.5 107
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Basin Index (%) 95 94
LOWER GREEN RIVER
Blacks Fork Jct 8870 10.4 -M * 12.5 -M *
Buck Pasture 9700 12.6 -M * 17.3 -M *
EF Blacks Fork GS 9360 8.6 -M * 11.0 -M *
Hams Fork 7840 9.7 9.7 100 10.8 11.5 94
Hewinta 9519 9.1 10.6 86 14.0 14.4 97
Hickerson Park 9145 10.6 7.7 138 12.1 10.5 115
Hole-in-Rock 9150 7.9 7.1 111 12.3 10.0 123
Indian Creek 9425 22.1 24.8 89 18.8 22.7 83
Kelley R.S. 8180 12.5 14.3 87 15.6 18.2 86
Spirit Lk 10235 14.6 -M * 17.4 -M *
Steel Creek Park 10200 16.8 16.0 105 18.9 16.9 112
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Basin Index (%) 98 98
UPPER BEAR RIVER
Bear River RS 8777 3.7 -M * 12.0 -M *
Bug Lake 7950 16.6 19.0 87 19.3 19.6 98
Burts Miller Ranch 8000 .2 -M * 5.9 -M *
Chalk Creek #1 8993 18.7 24.7 76 22.3 25.6 87
Hayden Fork 9212 9.9 14.9 66 19.4 21.4 91
Kelley R.S. 8180 12.5 14.3 87 15.6 18.2 86
Lily Lake 9156 10.9 12.7 86 14.0 17.5 80
Monte Cristo 8960 25.8 27.9 92 27.8 26.3 106
Salt River Summit 7760 11.2 12.3 91 15.5 16.8 92
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Basin Index (%) 84 92
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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.