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 WEDNESDAY: MARCH 23 , 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 15.2 14.6 104 18.8 19.2 98
Black Bear 8170 -M 33.1 * -M 34.9 *
Blind Bull Sum 8650 23.5 20.8 113 15.0 17.9 84
Cottonwood Creek 7670 20.4 20.3 100 23.9 22.3 107
East Rim Divide 7930 10.4 9.6 108 10.2 10.7 95
Grand Targhee 9260 36.9 33.4 110 28.3 27.4 103
Granite Creek 6770 14.0 14.7 95 16.4 18.3 90
Grassy Lake 7265 28.7 29.7 97 33.1 33.1 100
Gros Ventre Summit 8750 10.1 11.8 86 9.8 11.6 84
Gunsight Pass 9820 12.6 12.3 102 13.3 12.2 109
Lewis Lake Divide 7850 28.6 28.2 101 30.7 32.5 94
Phillips Bench 8200 21.1 22.8 93 24.2 25.6 95
Salt River Summit 7760 12.4 12.2 102 14.2 15.2 93
Snake River Station 6920 15.7 15.5 101 21.9 20.6 106
Spring Creek Divide 9000 23.3 21.6 108 21.6 21.8 99
Thumb Divide 7980 13.1 14.4 91 14.1 16.7 84
Togwotee Pass 9580 19.5 20.9 93 22.5 22.0 102
Two Ocean Plateau 9240 24.3 24.4 100 22.8 24.8 92
Willow Creek 8380 26.2 25.3 104 29.9 30.4 98
Younts Peak 8350 13.0 13.6 96 11.9 14.3 83
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Basin Index (%) 101 96
MADISON-GALLATIN
Black Bear 8170 -M 33.1 * -M 34.9 *
Canyon 7870 10.0 11.8 85 12.4 14.7 84
Madison Plateau 7750 20.1 20.4 99 20.9 23.9 87
West Yellowstone 6700 -M 10.0 * -M 12.8 *
Whiskey Creek 6800 12.8 14.4 89 15.1 18.4 82
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Basin Index (%) 92 85
YELLOWSTONE
Beartooth Lake 9360 15.9 19.8 80 16.4 18.0 91
Burnt Mtn 5880 .8 4.7 17 8.3 11.0 75
Canyon 7870 10.0 11.8 85 12.4 14.7 84
Cole Creek 7850 6.1 12.3 50 8.1 11.0 74
Evening Star 9200 23.5 22.7 104 26.1 24.8 105
Fisher Creek 9100 26.7 28.4 94 24.0 29.0 83
Northeast Entrance 7350 7.1 9.3 76 10.8 11.1 97
Parker Peak 9400 18.2 17.9 102 18.9 15.9 119
Sylvan Lake 8420 16.2 18.4 88 21.2 20.2 105
Thumb Divide 7980 13.1 14.4 91 14.1 16.7 84
Two Ocean Plateau 9240 24.3 24.4 100 22.8 24.8 92
White Mill 8700 21.3 20.4 104 20.1 21.5 93
Wolverine 7650 8.3 8.9 93 11.0 11.1 99
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Basin Index (%) 90 93
WIND RIVER
Burroughs Creek 8750 9.8 -M * 11.8 -M *
Castle Creek 8400 4.1 -M * 5.8 -M *
Cold Springs 9630 6.3 6.6 95 7.2 8.7 83
Deer Park 9700 12.1 13.9 87 12.5 17.4 72
Hobbs Park 10100 10.9 12.2 89 9.9 11.3 88
Kirwin 9550 8.2 8.5 96 9.8 10.2 96
Little Warm 9370 7.9 9.4 84 9.9 11.3 88
Owl Creek 8975 3.6 4.7 77 4.3 5.1 84
South Pass 9040 10.5 14.3 73 8.4 15.5 54
St. Lawrence Alt 8620 3.8 6.4 59 5.8 7.7 75
Togwotee Pass 9580 19.5 20.9 93 22.5 22.0 102
Townsend Creek 8700 6.8 8.5 80 7.6 10.2 75
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Basin Index (%) 85 82
BIGHORN BASIN
Bald Mtn. 9380 11.9 16.6 72 10.3 15.1 68
Bear Trap Meadow 8200 5.6 5.2 108 5.2 7.3 71
Bone Springs Div 9350 10.5 14.2 74 9.0 13.6 66
Grave Springs 8550 5.2 8.3 63 4.2 9.2 46
Kirwin 9550 8.2 8.5 96 9.8 10.2 96
Marquette 8760 3.7 -M * 7.7 -M *
Middle Powder 7760 6.9 10.2 68 5.0 10.3 49
Owl Creek 8975 3.6 4.7 77 4.3 5.1 84
Powder River Pass 9480 7.0 9.4 74 6.9 11.1 62
Shell Creek 9580 9.6 13.1 73 8.3 12.1 69
Timber Creek 7950 3.3 4.1 80 7.6 6.3 121
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Basin Index (%) 76 70
SHOSHONE RIVER
Blackwater 9780 19.4 21.0 92 21.9 18.4 119
Evening Star 9200 23.5 22.7 104 26.1 24.8 105
Marquette 8760 3.7 -M * 7.7 -M *
Sylvan Road 7120 7.9 10.6 75 14.2 15.3 93
Younts Peak 8350 13.0 13.6 96 11.9 14.3 83
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Basin Index (%) 94 102
POWDER RIVER
Bear Trap Meadow 8200 5.6 5.2 108 5.2 7.3 71
Cloud Peak Reservoir 9860 8.7 13.2 66 9.0 11.5 78
Grave Springs 8550 5.2 8.3 63 4.2 9.2 46
Hansen Sawmill 8360 4.9 5.8 84 5.6 7.4 76
Middle Powder 7760 6.9 10.2 68 5.0 10.3 49
Powder River Pass 9480 7.0 9.4 74 6.9 11.1 62
Soldier Park 8720 3.1 -M * 5.3 -M *
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Basin Index (%) 74 63
TONGUE RIVER
Big Goose 7990 5.0 8.0 62 5.6 9.4 60
Bone Springs Div 9350 10.5 14.2 74 9.0 13.6 66
Burgess Junction 7880 5.9 9.8 60 6.9 10.7 64
Dome Lake 8880 6.6 10.5 63 6.5 11.7 56
Little Goose 8870 5.9 -M * 7.3 -M *
Sucker Creek 8880 7.0 11.0 64 7.4 12.5 59
Tie Creek 6870 .3 5.1 6 5.5 9.9 56
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Basin Index (%) 60 60
BELLE FOURCHE
Cole Canyon 5910 2.9 5.6 52 7.7 8.0 96
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Basin Index (%) 52 96
CHEYENNE RIVER BASIN
Blind Park 6890 3.7 7.1 52 8.7 10.6 82
North Rapid Creek 6130 4.5 6.6 68 6.9 8.7 79
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Basin Index (%) 60 81
UPPER N. PLATTE
Arapaho Ridge 10960 21.4 18.2 118 21.4 19.9 108
Blackhall Mtn 9820 27.3 -M * 26.5 -M *
Columbine 9160 22.8 22.1 103 23.5 23.3 101
Divide Peak 8880 17.6 18.0 98 19.7 19.4 102
Joe Wright 10120 14.5 19.3 75 22.1 23.2 95
Laprele Creek 8375 7.7 9.3 83 8.6 11.0 78
Med Bow 10500 30.4 -M * 26.9 -M *
North French Creek 10130 22.9 26.1 88 22.0 24.0 92
Never Summer 10280 17.2 18.2 95 14.8 -M *
Old Battle 10000 25.7 27.1 95 24.4 31.9 76
Rawah 9020 11.8 9.7 122 15.6 12.4 126
Sage Creek Basin 7850 13.8 11.6 119 11.1 13.0 85
Sand Lake 10050 22.6 25.3 89 21.6 22.0 98
South Brush Creek 8440 11.0 11.3 97 11.3 13.6 83
Tower 10500 34.6 40.7 85 33.2 36.2 92
Webber Springs 9250 19.8 21.5 92 22.0 24.2 91
Willow Creek Pass 9540 13.7 11.1 123 14.0 11.9 118
Zirkel 9340 26.4 25.5 104 28.1 25.6 110
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Basin Index (%) 96 96
SWEETWATER
Deer Park 9700 12.1 13.9 87 12.5 17.4 72
Larsen Creek 9000 7.9 11.4 69 10.7 -M *
South Pass 9040 10.5 14.3 73 8.4 15.5 54
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Basin Index (%) 77 64
LOWER N. PLATTE
Casper Mtn. 7900 9.8 12.6 78 10.7 13.0 82
Laprele Creek 8375 7.7 9.3 83 8.6 11.0 78
Reno Hill 8400 11.3 12.3 92 13.6 13.2 103
Windy Peak 7900 6.7 7.4 91 8.5 9.2 92
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Basin Index (%) 85 89
LARAMIE RIVER
Brooklyn Lake 10240 21.3 18.0 118 20.1 18.8 107
Cinnabar Park 9574 18.2 18.7 97 20.1 21.6 93
Crow Creek 8330 8.2 6.9 119 12.0 9.1 132
Deadman Hill 10220 16.9 14.2 119 16.0 15.2 105
Rawah 9020 11.8 9.7 122 15.6 12.4 126
Roach 9700 15.1 14.3 106 16.9 17.1 99
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Basin Index (%) 112 107
S. PLATTE
Black Mountain 8920 11.2 -M * 13.9 -M *
Crow Creek 8330 8.2 6.9 119 12.0 9.1 132
Deadman Hill 10220 16.9 14.2 119 16.0 15.2 105
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Basin Index (%) 119 115
LITTLE SNAKE RIVER
Battle Mountain 7440 12.5 11.3 111 14.1 13.7 103
Divide Peak 8880 17.6 18.0 98 19.7 19.4 102
Elk River 8700 17.1 17.5 98 17.0 18.2 93
Little Snake River 8915 21.4 21.4 100 28.0 26.8 104
Old Battle 10000 25.7 27.1 95 24.4 31.9 76
Sage Creek Basin 7850 13.8 11.6 119 11.1 13.0 85
Sandstone RS 8150 10.1 12.7 80 10.6 16.9 63
Whiskey Park 8950 24.8 24.5 101 24.6 25.3 97
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Basin Index (%) 99 90
UPPER GREEN RIVER
Big Sandy Opening 9080 9.9 11.9 83 10.2 12.0 85
Blind Bull Sum 8650 23.5 20.8 113 15.0 17.9 84
East Rim Divide 7930 10.4 9.6 108 10.2 10.7 95
Elkhart Park G.S. 9400 8.3 11.0 75 10.3 12.0 86
Gros Ventre Summit 8750 10.1 11.8 86 9.8 11.6 84
Gunsight Pass 9820 12.6 12.3 102 13.3 12.2 109
Kendall R.S. 7740 9.7 11.4 85 11.3 13.0 87
Loomis Park 8240 13.5 13.7 99 15.5 15.7 99
New Fork Lake 8340 8.8 9.5 93 10.5 9.8 107
Pocket Creek 9360 6.9 -M * 8.3 -M *
Snider Basin 8060 11.3 11.2 101 11.8 12.9 91
Spring Creek Divide 9000 23.3 21.6 108 21.6 21.8 99
Triple Peak 8500 23.4 20.0 117 24.4 23.1 106
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Basin Index (%) 100 95
LOWER GREEN RIVER
Blacks Fork Jct 8870 10.4 -M * 10.6 -M *
Buck Pasture 9700 -M -M * -M -M *
EF Blacks Fork GS 9360 8.6 -M * 8.7 -M *
Hams Fork 7840 -M 10.5 * -M 10.3 *
Hewinta 9519 10.4 9.9 105 11.8 12.6 94
Hickerson Park 9145 9.3 6.8 137 9.7 9.1 107
Hole-in-Rock 9150 8.2 6.8 121 10.1 8.5 119
Indian Creek 9425 19.9 21.8 91 15.7 20.5 77
Kelley R.S. 8180 12.7 13.8 92 14.1 16.5 85
Spirit Lk 10235 11.3 -M * 13.3 -M *
Steel Creek Park 10200 14.2 13.7 104 16.1 14.6 110
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Basin Index (%) 103 95
UPPER BEAR RIVER
Bear River RS 8777 7.4 -M * 10.9 -M *
Bug Lake 7950 17.2 17.0 101 17.3 17.7 98
Burts Miller Ranch 8000 4.6 -M * 5.4 -M *
Chalk Creek #1 8993 18.2 21.9 83 20.0 22.6 88
Hayden Fork 9212 12.7 14.5 88 17.6 18.9 93
Kelley R.S. 8180 12.7 13.8 92 14.1 16.5 85
Lily Lake 9156 12.2 11.5 106 12.1 15.3 79
Monte Cristo 8960 25.6 24.9 103 24.9 23.5 106
Salt River Summit 7760 12.4 12.2 102 14.2 15.2 93
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Basin Index (%) 96 93
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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.