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 30 , 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 16.2 14.7 110 19.8 20.0 99
Black Bear 8170 31.9 35.7 89 33.6 36.3 93
Blind Bull Sum 8650 25.1 22.0 114 16.2 18.6 87
Cottonwood Creek 7670 21.4 21.0 102 25.0 23.4 107
East Rim Divide 7930 11.1 9.9 112 10.8 11.2 96
Grand Targhee 9260 38.7 35.7 108 29.5 28.8 102
Granite Creek 6770 14.4 15.0 96 16.9 18.9 89
Grassy Lake 7265 30.2 31.5 96 34.8 34.4 101
Gros Ventre Summit 8750 11.1 12.7 87 10.5 12.2 86
Gunsight Pass 9820 13.5 13.2 102 14.1 13.0 108
Lewis Lake Divide 7850 29.7 29.4 101 31.8 33.8 94
Phillips Bench 8200 22.2 23.9 93 25.4 26.8 95
Salt River Summit 7760 13.3 12.7 105 15.1 15.8 96
Snake River Station 6920 17.5 15.8 111 22.9 21.5 107
Spring Creek Divide 9000 24.8 22.4 111 22.9 22.7 101
Thumb Divide 7980 14.3 15.0 95 14.9 17.6 85
Togwotee Pass 9580 21.2 21.5 99 24.0 23.0 104
Two Ocean Plateau 9240 26.1 25.4 103 24.4 25.9 94
Willow Creek 8380 27.6 27.3 101 31.1 31.8 98
Younts Peak 8350 14.1 14.0 101 13.0 15.0 87
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Basin Index (%) 101 97
MADISON-GALLATIN
Black Bear 8170 31.9 35.7 89 33.6 36.3 93
Canyon 7870 10.7 12.3 87 13.1 15.4 85
Madison Plateau 7750 21.5 21.2 101 22.2 25.0 89
West Yellowstone 6700 10.5 10.2 103 13.0 13.4 97
Whiskey Creek 6800 13.4 14.9 90 16.1 19.2 84
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Basin Index (%) 93 90
YELLOWSTONE
Beartooth Lake 9360 16.5 20.8 79 17.0 18.6 91
Burnt Mtn 5880 1.7 4.4 39 9.8 11.8 83
Canyon 7870 10.7 12.3 87 13.1 15.4 85
Cole Creek 7850 8.5 13.2 64 9.9 11.8 84
Evening Star 9200 24.8 23.9 104 27.3 25.8 106
Fisher Creek 9100 28.0 29.7 94 25.1 30.2 83
Northeast Entrance 7350 7.4 9.7 76 11.3 11.6 97
Parker Peak 9400 19.6 18.6 105 20.1 16.7 120
Sylvan Lake 8420 17.5 19.0 92 22.6 21.1 107
Thumb Divide 7980 14.3 15.0 95 14.9 17.6 85
Two Ocean Plateau 9240 26.1 25.4 103 24.4 25.9 94
White Mill 8700 22.2 21.4 104 21.0 22.5 93
Wolverine 7650 9.4 9.0 104 11.9 11.5 103
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Basin Index (%) 93 95
WIND RIVER
Burroughs Creek 8750 10.8 -M * 12.6 -M *
Castle Creek 8400 4.4 -M * 6.2 -M *
Cold Springs 9630 8.8 7.1 124 9.1 9.4 97
Deer Park 9700 15.5 14.5 107 15.9 18.5 86
Hobbs Park 10100 14.8 13.1 113 13.6 12.3 111
Kirwin 9550 9.9 9.2 108 11.4 10.9 105
Little Warm 9370 9.4 10.1 93 11.1 12.1 92
Owl Creek 8975 4.7 5.2 90 4.8 5.6 86
South Pass 9040 13.6 14.7 93 11.7 16.4 71
St. Lawrence Alt 8620 6.3 6.7 94 8.3 8.3 100
Togwotee Pass 9580 21.2 21.5 99 24.0 23.0 104
Townsend Creek 8700 10.1 8.8 115 10.9 11.1 98
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Basin Index (%) 103 95
BIGHORN BASIN
Bald Mtn. 9380 13.7 18.1 76 11.4 16.0 71
Bear Trap Meadow 8200 7.0 5.1 137 6.1 7.9 77
Bone Springs Div 9350 11.6 15.4 75 9.8 14.6 67
Grave Springs 8550 6.9 8.7 79 5.5 9.8 56
Kirwin 9550 9.9 9.2 108 11.4 10.9 105
Marquette 8760 6.4 -M * 10.1 -M *
Middle Powder 7760 10.0 11.0 91 -M 10.9 *
Owl Creek 8975 4.7 5.2 90 4.8 5.6 86
Powder River Pass 9480 7.8 9.9 79 7.6 11.8 64
Shell Creek 9580 10.8 14.2 76 9.1 13.0 70
Timber Creek 7950 5.7 4.6 124 9.8 6.9 142
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Basin Index (%) 87 78
SHOSHONE RIVER
Blackwater 9780 21.4 21.8 98 23.9 19.4 123
Evening Star 9200 24.8 23.9 104 27.3 25.8 106
Marquette 8760 6.4 -M * 10.1 -M *
Sylvan Road 7120 8.3 11.1 75 14.9 16.0 93
Younts Peak 8350 14.1 14.0 101 13.0 15.0 87
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Basin Index (%) 97 104
POWDER RIVER
Bear Trap Meadow 8200 7.0 5.1 137 6.1 7.9 77
Cloud Peak Reservoir 9860 10.7 13.9 77 11.0 12.4 89
Grave Springs 8550 6.9 8.7 79 5.5 9.8 56
Hansen Sawmill 8360 6.4 6.3 102 7.1 8.0 89
Middle Powder 7760 10.0 11.0 91 -M 10.9 *
Powder River Pass 9480 7.8 9.9 79 7.6 11.8 64
Soldier Park 8720 4.6 -M * 6.9 -M *
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Basin Index (%) 89 75
TONGUE RIVER
Big Goose 7990 6.7 8.6 78 7.2 10.4 69
Bone Springs Div 9350 11.6 15.4 75 9.8 14.6 67
Burgess Junction 7880 7.4 11.1 67 7.7 11.5 67
Dome Lake 8880 8.2 11.4 72 8.1 12.7 64
Little Goose 8870 7.9 -M * 9.4 -M *
Sucker Creek 8880 8.5 11.3 75 8.6 13.4 64
Tie Creek 6870 1.8 5.4 33 7.2 10.7 67
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Basin Index (%) 70 66
BELLE FOURCHE
Cole Canyon 5910 3.4 5.8 59 8.5 8.5 100
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Basin Index (%) 59 100
CHEYENNE RIVER BASIN
Blind Park 6890 3.7 7.2 51 9.0 11.1 81
North Rapid Creek 6130 4.2 6.7 63 7.3 9.1 80
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Basin Index (%) 57 81
UPPER N. PLATTE
Arapaho Ridge 10960 23.8 19.4 123 23.6 21.0 112
Blackhall Mtn 9820 29.2 -M * 28.1 -M *
Columbine 9160 24.1 22.4 108 25.0 24.1 104
Divide Peak 8880 18.6 19.3 96 21.2 20.2 105
Joe Wright 10120 17.0 20.0 85 24.5 24.3 101
Laprele Creek 8375 8.8 9.4 94 9.5 11.6 82
Med Bow 10500 33.1 -M * 29.1 -M *
North French Creek 10130 25.2 27.5 92 23.9 25.3 94
Never Summer 10280 19.8 19.2 103 17.0 -M *
Old Battle 10000 27.8 28.9 96 26.1 33.1 79
Rawah 9020 13.7 10.2 134 17.5 13.3 132
Sage Creek Basin 7850 15.3 12.6 121 12.1 13.6 89
Sand Lake 10050 25.2 27.0 93 23.9 23.2 103
South Brush Creek 8440 12.2 12.2 100 12.7 14.4 88
Tower 10500 37.5 43.2 87 35.0 37.7 93
Webber Springs 9250 21.3 22.7 94 23.6 25.3 93
Willow Creek Pass 9540 15.5 11.6 134 15.6 12.6 124
Zirkel 9340 27.5 26.3 105 29.2 26.9 109
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Basin Index (%) 100 99
SWEETWATER
Deer Park 9700 15.5 14.5 107 15.9 18.5 86
Larsen Creek 9000 8.7 12.0 72 11.7 -M *
South Pass 9040 13.6 14.7 93 11.7 16.4 71
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Basin Index (%) 92 79
LOWER N. PLATTE
Casper Mtn. 7900 13.5 13.0 104 12.8 13.8 93
Laprele Creek 8375 8.8 9.4 94 9.5 11.6 82
Reno Hill 8400 13.5 12.8 105 15.6 14.3 109
Windy Peak 7900 8.4 7.8 108 9.3 9.8 95
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Basin Index (%) 103 95
LARAMIE RIVER
Brooklyn Lake 10240 23.4 19.4 121 22.0 19.8 111
Cinnabar Park 9574 19.5 19.7 99 21.6 22.8 95
Crow Creek 8330 9.1 6.8 134 13.3 10.0 133
Deadman Hill 10220 19.4 15.2 128 18.3 16.2 113
Rawah 9020 13.7 10.2 134 17.5 13.3 132
Roach 9700 16.9 15.2 111 18.7 18.0 104
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Basin Index (%) 118 111
S. PLATTE
Black Mountain 8920 12.9 -M * 15.8 -M *
Crow Creek 8330 9.1 6.8 134 13.3 10.0 133
Deadman Hill 10220 19.4 15.2 128 18.3 16.2 113
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Basin Index (%) 130 121
LITTLE SNAKE RIVER
Battle Mountain 7440 12.8 10.8 119 14.4 14.3 101
Divide Peak 8880 18.6 19.3 96 21.2 20.2 105
Elk River 8700 18.0 18.1 99 17.8 19.0 94
Little Snake River 8915 23.2 22.6 103 29.8 27.9 107
Old Battle 10000 27.8 28.9 96 26.1 33.1 79
Sage Creek Basin 7850 15.3 12.6 121 12.1 13.6 89
Sandstone RS 8150 10.7 13.1 82 11.0 17.5 63
Whiskey Park 8950 26.6 25.2 106 26.1 26.5 98
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Basin Index (%) 102 92
UPPER GREEN RIVER
Big Sandy Opening 9080 10.8 12.2 89 11.0 12.5 88
Blind Bull Sum 8650 25.1 22.0 114 16.2 18.6 87
East Rim Divide 7930 11.1 9.9 112 10.8 11.2 96
Elkhart Park G.S. 9400 9.0 11.8 76 11.0 12.6 87
Gros Ventre Summit 8750 11.1 12.7 87 10.5 12.2 86
Gunsight Pass 9820 13.5 13.2 102 14.1 13.0 108
Kendall R.S. 7740 9.9 11.4 87 11.6 13.6 85
Loomis Park 8240 14.2 14.4 99 16.2 16.5 98
New Fork Lake 8340 9.3 10.2 91 11.0 10.3 107
Pocket Creek 9360 7.8 -M * 9.0 -M *
Snider Basin 8060 -M 12.0 * 13.6 13.5 101
Spring Creek Divide 9000 24.8 22.4 111 22.9 22.7 101
Triple Peak 8500 26.0 21.3 122 26.4 24.1 110
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Basin Index (%) 102 97
LOWER GREEN RIVER
Blacks Fork Jct 8870 11.4 -M * 11.8 -M *
Buck Pasture 9700 13.7 -M * 16.5 -M *
EF Blacks Fork GS 9360 9.6 -M * 9.9 -M *
Hams Fork 7840 -M 10.7 * -M 10.8 *
Hewinta 9519 11.8 10.6 111 13.0 13.2 98
Hickerson Park 9145 10.1 7.3 138 10.2 9.5 107
Hole-in-Rock 9150 9.7 7.0 139 10.9 9.0 121
Indian Creek 9425 22.9 23.5 97 18.1 21.4 85
Kelley R.S. 8180 13.8 14.7 94 15.1 17.3 87
Spirit Lk 10235 13.7 -M * 15.4 -M *
Steel Creek Park 10200 15.9 14.8 107 17.8 15.4 116
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Basin Index (%) 108 99
UPPER BEAR RIVER
Bear River RS 8777 8.3 -M * 11.5 -M *
Bug Lake 7950 18.8 18.0 104 19.0 18.4 103
Burts Miller Ranch 8000 5.2 -M * 5.7 -M *
Chalk Creek #1 8993 20.2 23.0 88 21.7 23.8 91
Hayden Fork 9212 14.8 14.9 99 18.6 19.9 93
Kelley R.S. 8180 13.8 14.7 94 15.1 17.3 87
Lily Lake 9156 12.9 11.9 108 12.1 16.1 75
Monte Cristo 8960 28.2 25.8 109 25.9 24.6 105
Salt River Summit 7760 13.3 12.7 105 15.1 15.8 96
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Basin Index (%) 101 94
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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.