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 SUNDAY: MAY 8 , 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 .1 5.5 2 21.4 23.5 91
Black Bear 8170 26.4 36.9 72 37.3 42.8 87
Blind Bull Sum 8650 27.1 22.6 120 18.7 22.0 85
Cottonwood Creek 7670 13.0 13.3 98 30.7 28.6 107
East Rim Divide 7930 .0 6.6 0 13.5 13.4 101
Grand Targhee 9260 39.3 46.4 85 34.7 35.9 97
Granite Creek 6770 .0 6.3 0 20.1 21.9 92
Grassy Lake 7265 14.6 26.7 55 37.0 40.3 92
Gros Ventre Summit 8750 7.2 10.0 72 13.0 15.2 86
Gunsight Pass 9820 12.6 11.8 107 17.4 16.7 104
Lewis Lake Divide 7850 15.0 29.5 51 33.6 39.5 85
Phillips Bench 8200 14.5 23.4 62 28.3 31.6 90
Salt River Summit 7760 .2 5.7 4 18.6 18.9 98
Snake River Station 6920 .0 3.5 0 23.5 25.4 93
Spring Creek Divide 9000 24.1 24.0 100 27.5 26.9 102
Thumb Divide 7980 .0 9.4 0 16.0 21.6 74
Togwotee Pass 9580 21.1 25.2 84 27.8 28.3 98
Two Ocean Plateau 9240 22.7 29.7 76 26.2 30.9 85
Willow Creek 8380 16.3 21.5 76 37.7 38.9 97
Younts Peak 8350 .3 15.6 2 15.5 18.3 85
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Basin Index (%) 68 92
MADISON-GALLATIN
Black Bear 8170 26.4 36.9 72 37.3 42.8 87
Canyon 7870 .5 8.0 6 14.5 18.6 78
Madison Plateau 7750 12.2 20.6 59 24.4 29.8 82
West Yellowstone 6700 .0 .0 * 14.6 16.5 88
Whiskey Creek 6800 4.7 11.5 41 18.0 22.9 79
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Basin Index (%) 57 83
YELLOWSTONE
Beartooth Lake 9360 16.9 23.0 73 19.6 22.8 86
Burnt Mtn 5880 .0 .0 * 13.8 16.9 82
Canyon 7870 .5 8.0 6 14.5 18.6 78
Cole Creek 7850 10.2 17.0 60 -M 17.4 *
Evening Star 9200 21.9 25.2 87 30.9 31.5 98
Fisher Creek 9100 25.2 33.8 75 27.4 36.3 75
Northeast Entrance 7350 .0 1.0 0 12.3 14.4 85
Parker Peak 9400 16.2 21.7 75 23.0 20.9 110
Sylvan Lake 8420 8.1 18.2 45 25.3 26.0 97
Thumb Divide 7980 .0 9.4 0 16.0 21.6 74
Two Ocean Plateau 9240 22.7 29.7 76 26.2 30.9 85
White Mill 8700 17.6 24.5 72 22.7 27.2 83
Wolverine 7650 .0 .4 0* 13.2 14.4 92
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Basin Index (%) 66 87
WIND RIVER
Burroughs Creek 8750 4.5 -M * 16.5 -M *
Castle Creek 8400 .0 -M * 10.3 -M *
Cold Springs 9630 8.4 1.6 525 -M 13.2 *
Deer Park 9700 20.2 14.6 138 25.6 24.3 105
Hobbs Park 10100 23.3 15.9 147 25.4 17.6 144
Kirwin 9550 -M 10.8 * 18.4 14.6 126
Little Warm 9370 7.0 6.9 101 14.5 16.0 91
Owl Creek 8975 -M .5 * -M 8.4 *
South Pass 9040 17.2 12.6 137 20.3 21.1 96
St. Lawrence Alt 8620 -M 1.4 * 17.7 12.2 145
Togwotee Pass 9580 21.1 25.2 84 27.8 28.3 98
Townsend Creek 8700 13.2 4.8 275 -M 15.6 *
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Basin Index (%) 135 112
BIGHORN BASIN
Bald Mtn. 9380 14.6 20.4 72 15.1 20.7 73
Bear Trap Meadow 8200 .2 .2 100* 10.2 11.4 89
Bone Springs Div 9350 12.0 16.4 73 14.2 19.3 74
Grave Springs 8550 7.0 8.2 85 10.7 13.7 78
Kirwin 9550 -M 10.8 * 18.4 14.6 126
Marquette 8760 6.1 -M * 15.0 -M *
Middle Powder 7760 9.3 11.1 84 12.4 15.0 83
Owl Creek 8975 -M .5 * -M 8.4 *
Powder River Pass 9480 4.5 9.0 50 11.5 16.0 72
Shell Creek 9580 12.3 16.6 74 13.3 17.3 77
Timber Creek 7950 2.4 1.8 133 16.2 10.7 151
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Basin Index (%) 74 88
SHOSHONE RIVER
Blackwater 9780 22.1 25.2 88 27.5 24.3 113
Evening Star 9200 21.9 25.2 87 30.9 31.5 98
Marquette 8760 6.1 -M * 15.0 -M *
Sylvan Road 7120 .0 2.4 0 16.2 19.2 84
Younts Peak 8350 .3 15.6 2 15.5 18.3 85
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Basin Index (%) 65 97
POWDER RIVER
Bear Trap Meadow 8200 .2 .2 100* 10.2 11.4 89
Cloud Peak Reservoir 9860 12.7 16.6 77 17.8 17.8 100
Grave Springs 8550 7.0 8.2 85 10.7 13.7 78
Hansen Sawmill 8360 .2 1.5 13 11.6 11.6 100
Middle Powder 7760 9.3 11.1 84 12.4 15.0 83
Powder River Pass 9480 4.5 9.0 50 11.5 16.0 72
Soldier Park 8720 .1 -M * 11.5 -M *
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Basin Index (%) 73 87
TONGUE RIVER
Big Goose 7990 7.8 10.3 76 14.0 15.4 91
Bone Springs Div 9350 12.0 16.4 73 14.2 19.3 74
Burgess Junction 7880 9.5 11.4 83 13.4 15.7 85
Dome Lake 8880 9.1 11.2 81 15.1 17.5 86
Little Goose 8870 9.8 -M * 16.6 -M *
Sucker Creek 8880 9.2 12.3 75 15.5 18.6 83
Tie Creek 6870 .0 1.8 0 12.4 15.4 81
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Basin Index (%) 75 83
BELLE FOURCHE
Cole Canyon 5910 .1 .0 * 11.2 13.2 85
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Basin Index (%) * 85
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 12.1 15.1 80
North Rapid Creek 6130 .0 .0 * -M 13.0 *
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Basin Index (%) * 80
UPPER N. PLATTE
Arapaho Ridge 10960 27.4 22.3 123 29.9 27.0 111
Blackhall Mtn 9820 35.3 -M * 37.7 -M *
Columbine 9160 16.6 14.4 115 30.0 29.3 102
Divide Peak 8880 18.3 15.6 117 31.4 25.2 125
Joe Wright 10120 -M 22.9 * -M 31.0 *
Laprele Creek 8375 5.7 4.0 142 17.3 15.8 109
Med Bow 10500 38.9 -M * 39.5 -M *
North French Creek 10130 31.9 32.8 97 34.5 31.9 108
Never Summer 10280 22.5 22.1 102 21.3 -M *
Old Battle 10000 36.7 36.2 101 36.6 40.4 91
Rawah 9020 9.6 3.4 282 23.0 17.9 128
Sage Creek Basin 7850 7.1 .0 * 16.9 16.7 101
Sand Lake 10050 34.5 31.8 108 34.6 30.1 115
South Brush Creek 8440 6.1 6.2 98 19.9 18.7 106
Tower 10500 46.0 51.4 89 45.4 46.0 99
Webber Springs 9250 22.4 20.2 111 31.9 30.8 104
Willow Creek Pass 9540 17.2 14.0 123 19.4 16.3 119
Zirkel 9340 23.6 20.1 117 36.3 32.0 113
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Basin Index (%) 111 108
SWEETWATER
Deer Park 9700 20.2 14.6 138 25.6 24.3 105
Larsen Creek 9000 2.6 7.1 37 17.3 -M *
South Pass 9040 17.2 12.6 137 20.3 21.1 96
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Basin Index (%) 117 101
LOWER N. PLATTE
Casper Mtn. 7900 17.4 11.9 146 22.1 19.0 116
Laprele Creek 8375 5.7 4.0 142 17.3 15.8 109
Reno Hill 8400 16.5 11.4 145 25.1 19.9 126
Windy Peak 7900 6.9 1.6 431 17.7 13.6 130
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Basin Index (%) 161 120
LARAMIE RIVER
Brooklyn Lake 10240 25.1 21.9 115 29.6 25.7 115
Cinnabar Park 9574 22.3 18.0 124 29.3 28.0 105
Crow Creek 8330 -M .0 * -M 14.1 *
Deadman Hill 10220 23.5 18.7 126 25.4 21.5 118
Rawah 9020 9.6 3.4 282 23.0 17.9 128
Roach 9700 21.4 16.4 130 28.2 23.1 122
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Basin Index (%) 130 117
S. PLATTE
Black Mountain 8920 12.1 -M * 22.9 -M *
Crow Creek 8330 -M .0 * -M 14.1 *
Deadman Hill 10220 23.5 18.7 126 25.4 21.5 118
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Basin Index (%) 126* 118*
LITTLE SNAKE RIVER
Battle Mountain 7440 .3 .0 * 20.5 17.7 116
Divide Peak 8880 18.3 15.6 117 31.4 25.2 125
Elk River 8700 10.8 9.3 116 22.7 23.5 97
Little Snake River 8915 23.4 20.9 112 39.3 34.0 116
Old Battle 10000 36.7 36.2 101 36.6 40.4 91
Sage Creek Basin 7850 7.1 .0 * 16.9 16.7 101
Sandstone RS 8150 4.7 2.7 174 16.8 21.5 78
Whiskey Park 8950 29.5 27.0 109 35.9 32.6 110
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Basin Index (%) 117 104
UPPER GREEN RIVER
Big Sandy Opening 9080 10.1 8.7 116 16.2 15.9 102
Blind Bull Sum 8650 27.1 22.6 120 18.7 22.0 85
East Rim Divide 7930 .0 6.6 0 13.5 13.4 101
Elkhart Park G.S. 9400 7.5 9.8 77 14.9 15.6 96
Gros Ventre Summit 8750 7.2 10.0 72 13.0 15.2 86
Gunsight Pass 9820 12.6 11.8 107 17.4 16.7 104
Kendall R.S. 7740 -M .2 * 14.3 16.0 89
Loomis Park 8240 4.5 8.0 56 19.0 19.6 97
New Fork Lake 8340 .2 3.5 6 13.1 12.6 104
Pocket Creek 9360 8.5 -M * 13.5 -M *
Snider Basin 8060 .9 7.6 12 17.3 16.1 107
Spring Creek Divide 9000 24.1 24.0 100 27.5 26.9 102
Triple Peak 8500 15.2 15.3 99 30.5 28.8 106
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Basin Index (%) 86 98
LOWER GREEN RIVER
Blacks Fork Jct 8870 4.9 -M * 15.2 -M *
Buck Pasture 9700 10.0 -M * 21.0 -M *
EF Blacks Fork GS 9360 5.3 -M * 15.4 -M *
Hams Fork 7840 .0 .3 0* 14.0 13.6 103
Hewinta 9519 7.1 2.9 245 17.6 16.9 104
Hickerson Park 9145 7.8 1.2 650 16.8 12.6 133
Hole-in-Rock 9150 1.8 .7 257* 16.3 12.1 135
Indian Creek 9425 19.1 21.1 91 22.4 25.8 87
Kelley R.S. 8180 6.2 8.9 70 18.7 20.8 90
Spirit Lk 10235 18.9 -M * 23.9 -M *
Steel Creek Park 10200 19.7 17.7 111 23.8 19.9 120
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Basin Index (%) 117* 106
UPPER BEAR RIVER
Bear River RS 8777 .2 -M * 15.2 -M *
Bug Lake 7950 8.6 12.6 68 21.8 22.4 97
Burts Miller Ranch 8000 .0 -M * 7.7 -M *
Chalk Creek #1 8993 14.8 22.2 67 26.1 29.4 89
Hayden Fork 9212 3.3 6.6 50 23.5 24.6 96
Kelley R.S. 8180 6.2 8.9 70 18.7 20.8 90
Lily Lake 9156 7.4 7.0 106 17.7 20.3 87
Monte Cristo 8960 21.5 22.7 95 31.7 30.3 105
Salt River Summit 7760 .2 5.7 4 18.6 18.9 98
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Basin Index (%) 72 95
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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.