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 4 , 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 15.0 103 19.8 20.4 97
Black Bear 8170 28.4 37.0 77 33.7 37.3 90
Blind Bull Sum 8650 25.4 23.0 110 16.5 19.1 86
Cottonwood Creek 7670 20.7 21.2 98 25.5 24.1 106
East Rim Divide 7930 10.5 10.2 103 10.8 11.5 94
Grand Targhee 9260 39.3 37.6 105 30.0 30.2 99
Granite Creek 6770 13.5 14.7 92 17.0 19.3 88
Grassy Lake 7265 30.3 31.6 96 34.8 35.2 99
Gros Ventre Summit 8750 11.1 13.0 85 10.8 12.6 86
Gunsight Pass 9820 13.7 13.6 101 14.4 13.4 107
Lewis Lake Divide 7850 29.2 29.6 99 31.9 34.6 92
Phillips Bench 8200 22.3 24.7 90 25.6 27.5 93
Salt River Summit 7760 13.2 13.0 102 15.3 16.3 94
Snake River Station 6920 16.7 15.1 111 22.9 21.9 105
Spring Creek Divide 9000 25.1 22.5 112 23.3 23.3 100
Thumb Divide 7980 13.7 14.7 93 15.0 18.2 82
Togwotee Pass 9580 21.1 21.8 97 24.1 23.6 102
Two Ocean Plateau 9240 26.2 25.7 102 24.6 26.5 93
Willow Creek 8380 28.1 28.2 100 31.6 32.8 96
Younts Peak 8350 13.5 14.2 95 13.3 15.4 86
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Basin Index (%) 98 95
MADISON-GALLATIN
Black Bear 8170 28.4 37.0 77 33.7 37.3 90
Canyon 7870 10.5 12.4 85 13.2 15.8 84
Madison Plateau 7750 21.6 21.4 101 22.2 25.6 87
West Yellowstone 6700 10.1 10.0 101 13.0 13.8 94
Whiskey Creek 6800 13.4 15.0 89 16.2 19.6 83
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Basin Index (%) 88 88
YELLOWSTONE
Beartooth Lake 9360 16.9 21.2 80 17.6 19.2 92
Burnt Mtn 5880 2.1 4.6 46 10.9 12.6 87
Canyon 7870 10.5 12.4 85 13.2 15.8 84
Cole Creek 7850 11.0 14.1 78 11.9 12.4 96
Evening Star 9200 24.9 23.8 105 27.8 26.6 105
Fisher Creek 9100 28.4 30.8 92 25.9 30.8 84
Northeast Entrance 7350 7.7 9.2 84 11.5 11.9 97
Parker Peak 9400 20.2 19.1 106 20.5 17.1 120
Sylvan Lake 8420 17.2 19.3 89 22.7 21.7 105
Thumb Divide 7980 13.7 14.7 93 15.0 18.2 82
Two Ocean Plateau 9240 26.2 25.7 102 24.6 26.5 93
White Mill 8700 22.9 21.9 105 21.5 23.0 93
Wolverine 7650 11.0 9.4 117 11.7 11.9 98
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Basin Index (%) 94 95
WIND RIVER
Burroughs Creek 8750 10.6 -M * 12.9 -M *
Castle Creek 8400 4.4 -M * 6.3 -M *
Cold Springs 9630 9.0 7.0 129 10.0 9.7 103
Deer Park 9700 16.3 15.1 108 17.2 19.3 89
Hobbs Park 10100 16.3 13.8 118 15.5 13.0 119
Kirwin 9550 10.7 9.5 113 12.6 11.2 112
Little Warm 9370 9.2 10.2 90 11.3 12.5 90
Owl Creek 8975 4.8 5.7 84 5.4 5.9 92
South Pass 9040 14.4 15.1 95 12.9 17.0 76
St. Lawrence Alt 8620 7.0 6.8 103 9.2 8.7 106
Togwotee Pass 9580 21.1 21.8 97 24.1 23.6 102
Townsend Creek 8700 11.1 9.3 119 12.5 11.7 107
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Basin Index (%) 105 99
BIGHORN BASIN
Bald Mtn. 9380 14.9 18.9 79 12.0 16.6 72
Bear Trap Meadow 8200 7.1 5.1 139 6.5 8.2 79
Bone Springs Div 9350 12.3 16.4 75 10.6 15.1 70
Grave Springs 8550 8.0 9.1 88 6.6 10.2 65
Kirwin 9550 10.7 9.5 113 12.6 11.2 112
Marquette 8760 7.5 -M * 11.2 -M *
Middle Powder 7760 11.1 11.7 95 7.8 11.3 69
Owl Creek 8975 4.8 5.7 84 5.4 5.9 92
Powder River Pass 9480 8.0 10.1 79 8.3 12.2 68
Shell Creek 9580 11.3 14.8 76 9.9 13.4 74
Timber Creek 7950 6.1 4.9 124 10.5 7.2 146
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Basin Index (%) 89 81
SHOSHONE RIVER
Blackwater 9780 21.7 22.3 97 24.1 20.0 120
Evening Star 9200 24.9 23.8 105 27.8 26.6 105
Marquette 8760 7.5 -M * 11.2 -M *
Sylvan Road 7120 6.9 11.0 63 14.9 16.3 91
Younts Peak 8350 13.5 14.2 95 13.3 15.4 86
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Basin Index (%) 94 102
POWDER RIVER
Bear Trap Meadow 8200 7.1 5.1 139 6.5 8.2 79
Cloud Peak Reservoir 9860 11.5 14.4 80 12.4 12.9 96
Grave Springs 8550 8.0 9.1 88 6.6 10.2 65
Hansen Sawmill 8360 6.5 6.2 105 7.4 8.3 89
Middle Powder 7760 11.1 11.7 95 7.8 11.3 69
Powder River Pass 9480 8.0 10.1 79 8.3 12.2 68
Soldier Park 8720 4.7 -M * 7.5 -M *
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Basin Index (%) 92 78
TONGUE RIVER
Big Goose 7990 7.7 9.3 83 8.3 11.1 75
Bone Springs Div 9350 12.3 16.4 75 10.6 15.1 70
Burgess Junction 7880 8.7 11.6 75 9.3 12.0 78
Dome Lake 8880 9.0 11.6 78 9.2 13.2 70
Little Goose 8870 8.8 -M * 10.3 -M *
Sucker Creek 8880 9.6 11.8 81 10.2 14.0 73
Tie Creek 6870 3.0 5.5 55 8.5 11.3 75
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Basin Index (%) 76 73
BELLE FOURCHE
Cole Canyon 5910 3.6 5.6 64 9.2 9.1 101
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Basin Index (%) 64 101
CHEYENNE RIVER BASIN
Blind Park 6890 3.8 7.1 54 9.9 11.5 86
North Rapid Creek 6130 4.2 6.7 63 8.0 9.5 84
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Basin Index (%) 58 85
UPPER N. PLATTE
Arapaho Ridge 10960 24.5 20.4 120 24.3 21.8 111
Blackhall Mtn 9820 30.3 -M * 29.4 -M *
Columbine 9160 24.8 23.3 106 25.8 25.0 103
Divide Peak 8880 19.6 19.7 99 22.2 21.0 106
Joe Wright 10120 18.2 20.6 88 25.4 25.2 101
Laprele Creek 8375 10.3 9.4 110 11.6 12.2 95
Med Bow 10500 34.4 -M * 30.2 -M *
North French Creek 10130 26.2 28.7 91 24.9 26.1 95
Never Summer 10280 20.5 20.0 102 17.6 -M *
Old Battle 10000 28.9 30.7 94 27.4 34.2 80
Rawah 9020 13.9 10.4 134 18.4 13.8 133
Sage Creek Basin 7850 16.1 12.5 129 12.5 14.2 88
Sand Lake 10050 26.9 28.3 95 25.5 24.2 105
South Brush Creek 8440 12.5 12.1 103 13.9 14.9 93
Tower 10500 38.6 45.1 86 35.5 38.9 91
Webber Springs 9250 22.0 23.0 96 24.4 26.1 93
Willow Creek Pass 9540 16.1 12.0 134 16.1 13.1 123
Zirkel 9340 28.0 26.3 106 29.8 27.8 107
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Basin Index (%) 101 100
SWEETWATER
Deer Park 9700 16.3 15.1 108 17.2 19.3 89
Larsen Creek 9000 9.3 11.9 78 12.9 -M *
South Pass 9040 14.4 15.1 95 12.9 17.0 76
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Basin Index (%) 95 83
LOWER N. PLATTE
Casper Mtn. 7900 17.2 14.0 123 15.1 14.4 105
Laprele Creek 8375 10.3 9.4 110 11.6 12.2 95
Reno Hill 8400 16.3 13.7 119 18.6 14.9 125
Windy Peak 7900 9.9 7.8 127 11.0 10.2 108
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Basin Index (%) 120 109
LARAMIE RIVER
Brooklyn Lake 10240 24.3 21.0 116 22.9 20.6 111
Cinnabar Park 9574 19.7 20.6 96 22.2 23.6 94
Crow Creek 8330 9.7 7.0 139 14.4 10.5 137
Deadman Hill 10220 20.8 15.9 131 19.6 16.9 116
Rawah 9020 13.9 10.4 134 18.4 13.8 133
Roach 9700 17.7 16.1 110 19.7 18.8 105
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Basin Index (%) 117 112
S. PLATTE
Black Mountain 8920 13.8 -M * 16.8 -M *
Crow Creek 8330 9.7 7.0 139 14.4 10.5 137
Deadman Hill 10220 20.8 15.9 131 19.6 16.9 116
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Basin Index (%) 133 124
LITTLE SNAKE RIVER
Battle Mountain 7440 11.9 10.2 117 15.3 14.7 104
Divide Peak 8880 19.6 19.7 99 22.2 21.0 106
Elk River 8700 18.8 19.1 98 18.3 19.6 93
Little Snake River 8915 23.8 24.2 98 30.4 29.1 104
Old Battle 10000 28.9 30.7 94 27.4 34.2 80
Sage Creek Basin 7850 16.1 12.5 129 12.5 14.2 88
Sandstone RS 8150 11.0 12.9 85 11.7 18.0 65
Whiskey Park 8950 27.5 26.8 103 26.9 27.3 99
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Basin Index (%) 101 92
UPPER GREEN RIVER
Big Sandy Opening 9080 11.1 12.4 90 11.4 12.9 88
Blind Bull Sum 8650 25.4 23.0 110 16.5 19.1 86
East Rim Divide 7930 10.5 10.2 103 10.8 11.5 94
Elkhart Park G.S. 9400 9.1 12.2 75 11.2 13.0 86
Gros Ventre Summit 8750 11.1 13.0 85 10.8 12.6 86
Gunsight Pass 9820 13.7 13.6 101 14.4 13.4 107
Kendall R.S. 7740 9.0 11.5 78 11.7 13.9 84
Loomis Park 8240 14.0 14.0 100 16.2 16.9 96
New Fork Lake 8340 9.1 10.3 88 11.2 10.5 107
Pocket Creek 9360 8.3 -M * 9.5 -M *
Snider Basin 8060 13.9 12.3 113 14.0 13.9 101
Spring Creek Divide 9000 25.1 22.5 112 23.3 23.3 100
Triple Peak 8500 26.4 21.9 121 27.0 24.8 109
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Basin Index (%) 101 96
LOWER GREEN RIVER
Blacks Fork Jct 8870 11.7 -M * 12.3 -M *
Buck Pasture 9700 14.4 -M * 17.3 -M *
EF Blacks Fork GS 9360 10.3 -M * 10.7 -M *
Hams Fork 7840 -M 10.9 * -M 11.1 *
Hewinta 9519 12.3 11.0 112 13.6 13.7 99
Hickerson Park 9145 11.9 7.7 155 11.7 10.0 117
Hole-in-Rock 9150 10.3 6.9 149 11.6 9.4 123
Indian Creek 9425 23.2 24.3 95 18.6 22.1 84
Kelley R.S. 8180 13.9 15.0 93 15.5 17.7 88
Spirit Lk 10235 15.1 -M * 16.8 -M *
Steel Creek Park 10200 16.9 15.6 108 18.7 16.1 116
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Basin Index (%) 110 101
UPPER BEAR RIVER
Bear River RS 8777 8.2 -M * 12.0 -M *
Bug Lake 7950 18.7 18.2 103 19.2 19.0 101
Burts Miller Ranch 8000 4.9 -M * 5.9 -M *
Chalk Creek #1 8993 20.7 23.9 87 22.3 24.6 91
Hayden Fork 9212 15.4 15.3 101 19.4 20.6 94
Kelley R.S. 8180 13.9 15.0 93 15.5 17.7 88
Lily Lake 9156 13.6 12.4 110 12.1 16.7 72
Monte Cristo 8960 28.0 27.2 103 27.5 25.4 108
Salt River Summit 7760 13.2 13.0 102 15.3 16.3 94
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Basin Index (%) 99 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.