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 5 , 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 15.4 15.2 101 20.0 20.5 98
Black Bear 8170 29.9 37.1 81 34.4 37.4 92
Blind Bull Sum 8650 25.6 23.1 111 16.5 19.2 86
Cottonwood Creek 7670 20.8 21.1 99 25.6 24.2 106
East Rim Divide 7930 10.4 10.2 102 10.8 11.5 94
Grand Targhee 9260 39.8 37.9 105 30.2 30.4 99
Granite Creek 6770 13.4 14.7 91 17.0 19.4 88
Grassy Lake 7265 30.5 31.6 97 35.3 35.3 100
Gros Ventre Summit 8750 10.9 13.0 84 10.8 12.7 85
Gunsight Pass 9820 13.8 13.6 101 14.5 13.5 107
Lewis Lake Divide 7850 29.4 29.7 99 32.2 34.7 93
Phillips Bench 8200 22.3 24.9 90 25.8 27.6 93
Salt River Summit 7760 12.9 12.9 100 15.4 16.4 94
Snake River Station 6920 16.7 15.0 111 23.0 22.0 105
Spring Creek Divide 9000 25.7 22.5 114 23.4 23.4 100
Thumb Divide 7980 13.7 14.7 93 15.4 18.2 85
Togwotee Pass 9580 21.3 21.9 97 24.3 23.8 102
Two Ocean Plateau 9240 26.7 25.8 103 25.1 26.6 94
Willow Creek 8380 28.0 28.3 99 32.0 33.0 97
Younts Peak 8350 13.5 14.3 94 13.4 15.4 87
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Basin Index (%) 98 96
MADISON-GALLATIN
Black Bear 8170 29.9 37.1 81 34.4 37.4 92
Canyon 7870 10.5 12.5 84 13.2 15.9 83
Madison Plateau 7750 22.0 21.4 103 22.6 25.8 88
West Yellowstone 6700 10.1 9.9 102 13.3 13.9 96
Whiskey Creek 6800 13.5 14.9 91 16.5 19.7 84
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Basin Index (%) 90 89
YELLOWSTONE
Beartooth Lake 9360 17.0 21.2 80 17.7 19.3 92
Burnt Mtn 5880 1.6 4.6 35 10.9 12.7 86
Canyon 7870 10.5 12.5 84 13.2 15.9 83
Cole Creek 7850 11.0 14.3 77 11.9 12.6 94
Evening Star 9200 25.1 23.8 105 27.9 26.7 104
Fisher Creek 9100 28.8 30.9 93 26.0 31.0 84
Northeast Entrance 7350 7.5 9.2 82 11.6 12.0 97
Parker Peak 9400 20.7 19.2 108 20.8 17.2 121
Sylvan Lake 8420 17.6 19.3 91 23.3 21.8 107
Thumb Divide 7980 13.7 14.7 93 15.4 18.2 85
Two Ocean Plateau 9240 26.7 25.8 103 25.1 26.6 94
White Mill 8700 23.4 22.0 106 21.7 23.2 94
Wolverine 7650 10.7 9.4 114 11.8 11.9 99
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Basin Index (%) 94 95
WIND RIVER
Burroughs Creek 8750 10.3 -M * 13.0 -M *
Castle Creek 8400 4.1 -M * 6.4 -M *
Cold Springs 9630 8.9 6.9 129 10.0 9.8 102
Deer Park 9700 16.3 15.2 107 17.3 19.4 89
Hobbs Park 10100 16.1 13.9 116 15.5 13.2 117
Kirwin 9550 10.4 9.6 108 12.7 11.3 112
Little Warm 9370 9.1 10.2 89 11.4 12.6 90
Owl Creek 8975 4.8 5.8 83 5.4 5.9 92
South Pass 9040 14.4 15.1 95 13.0 17.1 76
St. Lawrence Alt 8620 7.1 6.8 104 9.4 8.8 107
Togwotee Pass 9580 21.3 21.9 97 24.3 23.8 102
Townsend Creek 8700 11.0 9.4 117 12.6 11.8 107
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Basin Index (%) 104 98
BIGHORN BASIN
Bald Mtn. 9380 14.9 19.0 78 12.0 16.6 72
Bear Trap Meadow 8200 6.7 5.0 134 6.6 8.3 80
Bone Springs Div 9350 12.2 16.6 73 10.8 15.2 71
Grave Springs 8550 7.8 9.2 85 6.6 10.3 64
Kirwin 9550 10.4 9.6 108 12.7 11.3 112
Marquette 8760 7.5 -M * 11.1 -M *
Middle Powder 7760 11.0 11.8 93 7.9 11.4 69
Owl Creek 8975 4.8 5.8 83 5.4 5.9 92
Powder River Pass 9480 7.6 10.1 75 8.3 12.2 68
Shell Creek 9580 11.2 14.8 76 10.0 13.5 74
Timber Creek 7950 6.1 4.9 124 10.5 7.2 146
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Basin Index (%) 87 81
SHOSHONE RIVER
Blackwater 9780 22.1 22.4 99 24.5 20.1 122
Evening Star 9200 25.1 23.8 105 27.9 26.7 104
Marquette 8760 7.5 -M * 11.1 -M *
Sylvan Road 7120 6.6 10.9 61 15.2 16.4 93
Younts Peak 8350 13.5 14.3 94 13.4 15.4 87
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Basin Index (%) 94 103
POWDER RIVER
Bear Trap Meadow 8200 6.7 5.0 134 6.6 8.3 80
Cloud Peak Reservoir 9860 11.3 14.6 77 12.5 13.0 96
Grave Springs 8550 7.8 9.2 85 6.6 10.3 64
Hansen Sawmill 8360 6.4 6.2 103 7.4 8.4 88
Middle Powder 7760 11.0 11.8 93 7.9 11.4 69
Powder River Pass 9480 7.6 10.1 75 8.3 12.2 68
Soldier Park 8720 4.3 -M * 7.5 -M *
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Basin Index (%) 89 78
TONGUE RIVER
Big Goose 7990 7.6 9.4 81 8.4 11.2 75
Bone Springs Div 9350 12.2 16.6 73 10.8 15.2 71
Burgess Junction 7880 8.7 11.7 74 9.3 12.1 77
Dome Lake 8880 8.8 11.7 75 9.2 13.3 69
Little Goose 8870 8.5 -M * 10.3 -M *
Sucker Creek 8880 9.4 11.9 79 10.2 14.1 72
Tie Creek 6870 2.6 5.5 47 8.5 11.4 75
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Basin Index (%) 74 73
BELLE FOURCHE
Cole Canyon 5910 3.3 5.5 60 9.3 9.2 101
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Basin Index (%) 60 101
CHEYENNE RIVER BASIN
Blind Park 6890 2.8 7.1 39 9.9 11.6 85
North Rapid Creek 6130 3.5 6.7 52 8.0 9.6 83
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Basin Index (%) 46 84
UPPER N. PLATTE
Arapaho Ridge 10960 24.8 20.6 120 24.3 22.0 110
Blackhall Mtn 9820 30.4 -M * 29.5 -M *
Columbine 9160 24.8 23.3 106 25.8 25.1 103
Divide Peak 8880 19.7 19.8 99 22.3 21.1 106
Joe Wright 10120 18.1 20.8 87 25.4 25.4 100
Laprele Creek 8375 10.0 9.4 106 11.6 12.3 94
Med Bow 10500 34.5 -M * 30.3 -M *
North French Creek 10130 26.2 29.0 90 24.9 26.3 95
Never Summer 10280 20.7 20.2 102 17.6 -M *
Old Battle 10000 29.0 30.9 94 27.5 34.4 80
Rawah 9020 13.6 10.5 130 18.5 13.9 133
Sage Creek Basin 7850 15.7 12.4 127 12.5 14.2 88
Sand Lake 10050 27.1 28.5 95 25.6 24.3 105
South Brush Creek 8440 12.2 12.0 102 13.9 15.0 93
Tower 10500 38.8 45.3 86 36.8 39.2 94
Webber Springs 9250 21.7 23.0 94 24.5 26.2 94
Willow Creek Pass 9540 16.1 12.0 134 16.1 13.2 122
Zirkel 9340 27.9 26.3 106 29.9 27.9 107
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Basin Index (%) 101 100
SWEETWATER
Deer Park 9700 16.3 15.2 107 17.3 19.4 89
Larsen Creek 9000 9.1 11.8 77 12.9 -M *
South Pass 9040 14.4 15.1 95 13.0 17.1 76
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Basin Index (%) 95 83
LOWER N. PLATTE
Casper Mtn. 7900 17.2 14.2 121 15.2 14.6 104
Laprele Creek 8375 10.0 9.4 106 11.6 12.3 94
Reno Hill 8400 16.1 13.9 116 18.7 15.1 124
Windy Peak 7900 9.8 7.8 126 11.0 10.3 107
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Basin Index (%) 117 108
LARAMIE RIVER
Brooklyn Lake 10240 24.3 21.3 114 23.0 20.8 111
Cinnabar Park 9574 19.5 20.9 93 22.2 23.8 93
Crow Creek 8330 9.5 7.0 136 14.4 10.6 136
Deadman Hill 10220 21.0 15.9 132 19.6 17.0 115
Rawah 9020 13.6 10.5 130 18.5 13.9 133
Roach 9700 17.5 16.3 107 19.7 18.9 104
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Basin Index (%) 115 112
S. PLATTE
Black Mountain 8920 13.6 -M * 16.9 -M *
Crow Creek 8330 9.5 7.0 136 14.4 10.6 136
Deadman Hill 10220 21.0 15.9 132 19.6 17.0 115
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Basin Index (%) 133 123
LITTLE SNAKE RIVER
Battle Mountain 7440 11.2 10.1 111 15.4 14.8 104
Divide Peak 8880 19.7 19.8 99 22.3 21.1 106
Elk River 8700 18.0 19.1 94 18.3 19.7 93
Little Snake River 8915 23.3 24.6 95 30.4 29.1 104
Old Battle 10000 29.0 30.9 94 27.5 34.4 80
Sage Creek Basin 7850 15.7 12.4 127 12.5 14.2 88
Sandstone RS 8150 10.9 12.8 85 11.7 18.0 65
Whiskey Park 8950 27.2 27.1 100 26.9 27.4 98
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Basin Index (%) 99 92
UPPER GREEN RIVER
Big Sandy Opening 9080 11.2 12.5 90 11.7 13.0 90
Blind Bull Sum 8650 25.6 23.1 111 16.5 19.2 86
East Rim Divide 7930 10.4 10.2 102 10.8 11.5 94
Elkhart Park G.S. 9400 9.1 12.2 75 11.2 13.0 86
Gros Ventre Summit 8750 10.9 13.0 84 10.8 12.7 85
Gunsight Pass 9820 13.8 13.6 101 14.5 13.5 107
Kendall R.S. 7740 8.9 11.5 77 11.7 14.0 84
Loomis Park 8240 13.8 13.9 99 16.3 17.0 96
New Fork Lake 8340 8.9 10.3 86 11.1 10.6 105
Pocket Creek 9360 8.2 -M * 9.4 -M *
Snider Basin 8060 14.0 12.3 114 14.1 14.0 101
Spring Creek Divide 9000 25.7 22.5 114 23.4 23.4 100
Triple Peak 8500 26.3 21.9 120 27.0 24.9 108
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Basin Index (%) 101 96
LOWER GREEN RIVER
Blacks Fork Jct 8870 11.6 -M * 12.4 -M *
Buck Pasture 9700 14.4 -M * 17.3 -M *
EF Blacks Fork GS 9360 10.1 -M * 10.7 -M *
Hams Fork 7840 -M 10.9 * -M 11.2 *
Hewinta 9519 12.1 11.0 110 13.7 13.8 99
Hickerson Park 9145 12.1 7.8 155 11.8 10.1 117
Hole-in-Rock 9150 8.7 7.0 124 11.6 9.5 122
Indian Creek 9425 23.2 24.5 95 18.6 22.2 84
Kelley R.S. 8180 13.8 14.9 93 15.5 17.8 87
Spirit Lk 10235 15.0 -M * 16.9 -M *
Steel Creek Park 10200 16.9 15.6 108 18.7 16.2 115
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Basin Index (%) 107 100
UPPER BEAR RIVER
Bear River RS 8777 7.4 -M * 12.0 -M *
Bug Lake 7950 18.4 18.3 101 19.2 19.1 101
Burts Miller Ranch 8000 4.7 -M * 5.9 -M *
Chalk Creek #1 8993 20.6 24.1 85 22.4 24.8 90
Hayden Fork 9212 14.3 15.4 93 19.4 20.7 94
Kelley R.S. 8180 13.8 14.9 93 15.5 17.8 87
Lily Lake 9156 13.1 12.5 105 12.1 16.8 72
Monte Cristo 8960 27.6 27.4 101 27.5 25.5 108
Salt River Summit 7760 12.9 12.9 100 15.4 16.4 94
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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.