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: APRIL 7 , 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 15.5 15.2 102 20.1 20.6 98
Black Bear 8170 29.9 37.2 80 34.4 37.8 91
Blind Bull Sum 8650 25.5 23.2 110 16.5 19.3 85
Cottonwood Creek 7670 20.5 21.0 98 25.6 24.3 105
East Rim Divide 7930 9.9 10.2 97 10.9 11.6 94
Grand Targhee 9260 39.9 38.5 104 30.2 30.6 99
Granite Creek 6770 12.9 14.5 89 17.1 19.5 88
Grassy Lake 7265 30.2 31.5 96 35.3 35.5 99
Gros Ventre Summit 8750 11.0 12.9 85 10.9 12.8 85
Gunsight Pass 9820 13.8 13.8 100 14.5 13.7 106
Lewis Lake Divide 7850 29.3 29.9 98 32.1 34.9 92
Phillips Bench 8200 22.4 25.4 88 25.8 27.8 93
Salt River Summit 7760 12.8 12.8 100 15.4 16.5 93
Snake River Station 6920 16.5 14.9 111 23.0 22.2 104
Spring Creek Divide 9000 25.3 22.5 112 23.4 23.5 100
Thumb Divide 7980 13.7 14.7 93 15.3 18.4 83
Togwotee Pass 9580 21.3 22.1 96 24.4 24.0 102
Two Ocean Plateau 9240 26.7 26.0 103 25.1 26.8 94
Willow Creek 8380 27.8 28.4 98 32.0 33.2 96
Younts Peak 8350 13.5 14.3 94 13.5 15.6 87
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Basin Index (%) 98 95
MADISON-GALLATIN
Black Bear 8170 29.9 37.2 80 34.4 37.8 91
Canyon 7870 10.6 12.4 85 13.3 16.0 83
Madison Plateau 7750 21.6 21.5 100 22.6 26.0 87
West Yellowstone 6700 9.4 9.5 99 13.3 14.1 94
Whiskey Creek 6800 13.3 14.8 90 16.6 19.9 83
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Basin Index (%) 89 88
YELLOWSTONE
Beartooth Lake 9360 17.1 21.3 80 17.7 19.4 91
Burnt Mtn 5880 .8 4.5 18 10.9 12.8 85
Canyon 7870 10.6 12.4 85 13.3 16.0 83
Cole Creek 7850 10.9 14.6 75 11.9 12.8 93
Evening Star 9200 25.3 23.8 106 28.1 26.9 104
Fisher Creek 9100 28.9 31.2 93 26.1 31.2 84
Northeast Entrance 7350 7.2 9.0 80 11.6 12.0 97
Parker Peak 9400 20.8 19.4 107 20.9 17.4 120
Sylvan Lake 8420 17.5 19.4 90 23.3 21.9 106
Thumb Divide 7980 13.7 14.7 93 15.3 18.4 83
Two Ocean Plateau 9240 26.7 26.0 103 25.1 26.8 94
White Mill 8700 23.1 22.2 104 21.9 23.3 94
Wolverine 7650 10.4 9.6 108 12.1 12.0 101
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Basin Index (%) 93 95
WIND RIVER
Burroughs Creek 8750 10.2 -M * 13.0 -M *
Castle Creek 8400 3.4 -M * 6.3 -M *
Cold Springs 9630 8.7 6.7 130 10.1 9.9 102
Deer Park 9700 16.1 15.6 103 17.4 19.8 88
Hobbs Park 10100 16.0 14.1 113 15.5 13.4 116
Kirwin 9550 10.2 9.6 106 12.6 11.4 111
Little Warm 9370 9.2 10.2 90 11.4 12.7 90
Owl Creek 8975 4.5 5.8 78 5.4 6.0 90
South Pass 9040 14.3 15.2 94 13.0 17.3 75
St. Lawrence Alt 8620 6.9 6.9 100 9.4 8.9 106
Togwotee Pass 9580 21.3 22.1 96 24.4 24.0 102
Townsend Creek 8700 10.8 9.7 111 12.6 12.0 105
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Basin Index (%) 102 97
BIGHORN BASIN
Bald Mtn. 9380 15.4 19.1 81 12.4 16.8 74
Bear Trap Meadow 8200 6.7 4.9 137 6.6 8.5 78
Bone Springs Div 9350 12.4 16.9 73 10.8 15.4 70
Grave Springs 8550 7.7 9.4 82 6.6 10.6 62
Kirwin 9550 10.2 9.6 106 12.6 11.4 111
Marquette 8760 7.4 -M * 11.1 -M *
Middle Powder 7760 10.8 12.0 90 7.8 11.6 67
Owl Creek 8975 4.5 5.8 78 5.4 6.0 90
Powder River Pass 9480 7.8 10.2 76 8.4 12.5 67
Shell Creek 9580 11.4 15.1 75 10.1 13.6 74
Timber Creek 7950 5.8 4.9 118 10.5 7.3 144
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Basin Index (%) 86 80
SHOSHONE RIVER
Blackwater 9780 22.2 22.6 98 24.7 20.3 122
Evening Star 9200 25.3 23.8 106 28.1 26.9 104
Marquette 8760 7.4 -M * 11.1 -M *
Sylvan Road 7120 6.0 10.8 56 15.2 16.5 92
Younts Peak 8350 13.5 14.3 94 13.5 15.6 87
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Basin Index (%) 94 103
POWDER RIVER
Bear Trap Meadow 8200 6.7 4.9 137 6.6 8.5 78
Cloud Peak Reservoir 9860 11.3 14.8 76 12.5 13.2 95
Grave Springs 8550 7.7 9.4 82 6.6 10.6 62
Hansen Sawmill 8360 6.1 6.1 100 7.5 8.5 88
Middle Powder 7760 10.8 12.0 90 7.8 11.6 67
Powder River Pass 9480 7.8 10.2 76 8.4 12.5 67
Soldier Park 8720 4.1 -M * 7.5 -M *
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Basin Index (%) 88 76
TONGUE RIVER
Big Goose 7990 7.5 9.6 78 8.4 11.4 74
Bone Springs Div 9350 12.4 16.9 73 10.8 15.4 70
Burgess Junction 7880 8.8 11.9 74 9.3 12.3 76
Dome Lake 8880 9.0 11.8 76 9.3 13.5 69
Little Goose 8870 8.4 -M * 10.3 -M *
Sucker Creek 8880 9.4 12.1 78 10.2 14.3 71
Tie Creek 6870 2.3 5.6 41 8.6 11.7 74
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Basin Index (%) 73 72
BELLE FOURCHE
Cole Canyon 5910 3.2 5.1 63 9.5 9.5 100
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Basin Index (%) 63 100
CHEYENNE RIVER BASIN
Blind Park 6890 2.6 7.0 37 10.5 11.8 89
North Rapid Creek 6130 3.1 6.5 48 8.3 9.9 84
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Basin Index (%) 42 87
UPPER N. PLATTE
Arapaho Ridge 10960 24.7 20.9 118 24.4 22.3 109
Blackhall Mtn 9820 30.5 -M * 29.3 -M *
Columbine 9160 24.9 23.4 106 26.3 25.4 104
Divide Peak 8880 19.3 19.9 97 22.3 21.3 105
Joe Wright 10120 18.5 21.2 87 26.0 25.6 102
Laprele Creek 8375 9.6 9.4 102 11.6 12.5 93
Med Bow 10500 34.4 -M * 30.3 -M *
North French Creek 10130 26.1 29.4 89 24.9 26.6 94
Never Summer 10280 20.7 20.3 102 17.8 -M *
Old Battle 10000 29.0 31.3 93 27.5 34.7 79
Rawah 9020 13.9 10.6 131 18.7 14.2 132
Sage Creek Basin 7850 15.3 11.9 129 12.5 14.6 86
Sand Lake 10050 27.0 28.8 94 25.7 24.6 104
South Brush Creek 8440 11.8 11.9 99 13.9 15.1 92
Tower 10500 39.4 45.8 86 37.2 39.6 94
Webber Springs 9250 21.9 23.1 95 24.5 26.6 92
Willow Creek Pass 9540 16.1 12.2 132 16.2 13.3 122
Zirkel 9340 28.5 26.3 108 30.6 28.4 108
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Basin Index (%) 100 99
SWEETWATER
Deer Park 9700 16.1 15.6 103 17.4 19.8 88
Larsen Creek 9000 8.8 11.6 76 12.9 -M *
South Pass 9040 14.3 15.2 94 13.0 17.3 75
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Basin Index (%) 92 82
LOWER N. PLATTE
Casper Mtn. 7900 16.9 14.3 118 15.2 15.0 101
Laprele Creek 8375 9.6 9.4 102 11.6 12.5 93
Reno Hill 8400 16.1 14.0 115 18.6 15.5 120
Windy Peak 7900 9.3 7.7 121 11.0 10.5 105
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Basin Index (%) 114 105
LARAMIE RIVER
Brooklyn Lake 10240 24.2 21.8 111 23.0 21.0 110
Cinnabar Park 9574 19.3 21.2 91 22.3 24.0 93
Crow Creek 8330 9.3 7.0 133 14.4 10.8 133
Deadman Hill 10220 21.4 16.1 133 20.1 17.2 117
Rawah 9020 13.9 10.6 131 18.7 14.2 132
Roach 9700 17.9 16.6 108 20.0 19.1 105
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Basin Index (%) 114 111
S. PLATTE
Black Mountain 8920 13.8 -M * 17.1 -M *
Crow Creek 8330 9.3 7.0 133 14.4 10.8 133
Deadman Hill 10220 21.4 16.1 133 20.1 17.2 117
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Basin Index (%) 133 123
LITTLE SNAKE RIVER
Battle Mountain 7440 10.6 9.5 112 15.3 14.9 103
Divide Peak 8880 19.3 19.9 97 22.3 21.3 105
Elk River 8700 17.5 19.2 91 18.4 19.9 92
Little Snake River 8915 23.7 25.2 94 30.5 29.7 103
Old Battle 10000 29.0 31.3 93 27.5 34.7 79
Sage Creek Basin 7850 15.3 11.9 129 12.5 14.6 86
Sandstone RS 8150 10.4 12.8 81 11.6 18.2 64
Whiskey Park 8950 27.2 27.4 99 27.0 27.8 97
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Basin Index (%) 97 91
UPPER GREEN RIVER
Big Sandy Opening 9080 11.2 12.6 89 11.6 13.1 89
Blind Bull Sum 8650 25.5 23.2 110 16.5 19.3 85
East Rim Divide 7930 9.9 10.2 97 10.9 11.6 94
Elkhart Park G.S. 9400 9.1 12.3 74 11.2 13.2 85
Gros Ventre Summit 8750 11.0 12.9 85 10.9 12.8 85
Gunsight Pass 9820 13.8 13.8 100 14.5 13.7 106
Kendall R.S. 7740 8.3 11.4 73 11.7 14.1 83
Loomis Park 8240 13.8 13.8 100 16.3 17.1 95
New Fork Lake 8340 8.5 10.3 83 11.1 10.6 105
Pocket Creek 9360 8.2 -M * 9.4 -M *
Snider Basin 8060 14.1 12.3 115 14.1 14.0 101
Spring Creek Divide 9000 25.3 22.5 112 23.4 23.5 100
Triple Peak 8500 25.8 21.8 118 27.0 25.0 108
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Basin Index (%) 100 95
LOWER GREEN RIVER
Blacks Fork Jct 8870 11.8 -M * 12.4 -M *
Buck Pasture 9700 14.4 -M * 17.3 -M *
EF Blacks Fork GS 9360 9.9 -M * 10.7 -M *
Hams Fork 7840 -M 10.6 * -M 11.3 *
Hewinta 9519 12.6 10.9 116 13.7 14.0 98
Hickerson Park 9145 11.8 7.9 149 11.6 10.2 114
Hole-in-Rock 9150 8.5 7.0 121 11.6 9.7 120
Indian Creek 9425 23.1 24.7 94 18.7 22.3 84
Kelley R.S. 8180 13.7 14.7 93 15.4 17.9 86
Spirit Lk 10235 14.9 -M * 16.9 -M *
Steel Creek Park 10200 16.9 15.8 107 18.7 16.4 114
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Basin Index (%) 107 99
UPPER BEAR RIVER
Bear River RS 8777 7.1 -M * 12.0 -M *
Bug Lake 7950 18.0 18.4 98 19.1 19.2 99
Burts Miller Ranch 8000 3.3 -M * 5.9 -M *
Chalk Creek #1 8993 20.4 24.4 84 22.3 25.0 89
Hayden Fork 9212 13.5 15.4 88 19.3 21.0 92
Kelley R.S. 8180 13.7 14.7 93 15.4 17.9 86
Lily Lake 9156 13.2 12.6 105 12.1 17.0 71
Monte Cristo 8960 27.4 27.7 99 27.6 25.8 107
Salt River Summit 7760 12.8 12.8 100 15.4 16.5 93
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Basin Index (%) 94 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.