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: JUNE 2 , 2015
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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 .0 .0 * 21.8 25.7 85
Black Bear 8170 .8 23.4 3 33.5 46.5 72
Blind Bull Sum 8650 14.4 10.7 135 22.7 24.4 93
Cottonwood Creek 7670 .0 .0 * 31.8 31.5 101
East Rim Divide 7930 .0 .0 * 15.5 15.1 103
Grand Targhee 9260 24.5 39.6 62 37.6 38.8 97
Granite Creek 6770 .0 .0 * 22.5 24.2 93
Grassy Lake 7265 .0 3.6 0 33.7 43.9 77
Gros Ventre Summit 8750 .0 .0 * 13.7 17.1 80
Gunsight Pass 9820 .8 2.3 35 17.0 18.8 90
Lewis Lake Divide 7850 .0 10.6 0 31.8 42.8 74
Phillips Bench 8200 .0 8.8 0 30.1 34.3 88
Salt River Summit 7760 .0 .0 * 19.4 20.9 93
Snake River Station 6920 .0 .0 * 23.2 27.9 83
Spring Creek Divide 9000 14.3 10.7 134 29.7 29.2 102
Thumb Divide 7980 .1 .0 * 16.2 23.9 68
Togwotee Pass 9580 13.6 18.6 73 30.4 31.1 98
Two Ocean Plateau 9240 7.6 24.2 31 27.3 34.5 79
Willow Creek 8380 -M 3.0 * 35.7 42.7 84
Younts Peak 8350 -M 2.4 * -M 20.8 *
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Basin Index (%) 50 86
MADISON-GALLATIN
Black Bear 8170 .8 23.4 3 33.5 46.5 72
Canyon 7870 .0 .0 * 14.7 21.1 70
Madison Plateau 7750 .0 5.2 0 22.2 33.4 66
West Yellowstone 6700 .0 .0 * 15.2 18.7 81
Whiskey Creek 6800 .0 .0 * 16.8 25.8 65
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Basin Index (%) 3* 70
YELLOWSTONE
Beartooth Lake 9360 14.7 16.5 89 23.9 25.3 94
Burnt Mtn 5880 .0 .0 * 23.8 20.9 114
Canyon 7870 .0 .0 * 14.7 21.1 70
Cole Creek 7850 11.3 8.2 138 22.8 21.4 107
Evening Star 9200 3.7 17.1 22 30.6 35.0 87
Fisher Creek 9100 18.7 27.7 68 34.7 40.2 86
Northeast Entrance 7350 .0 .0 * 17.5 16.8 104
Parker Peak 9400 .0 13.1 0 25.6 23.9 107
Sylvan Lake 8420 .0 5.4 0 25.2 29.4 86
Thumb Divide 7980 .1 .0 * 16.2 23.9 68
Two Ocean Plateau 9240 7.6 24.2 31 27.3 34.5 79
White Mill 8700 10.9 16.2 67 29.1 30.6 95
Wolverine 7650 .0 .0 * 16.5 16.6 99
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Basin Index (%) 52 91
WIND RIVER
Burroughs Creek 8750 .0 -M * 24.5 -M *
Castle Creek 8400 .0 -M * 14.8 -M *
Cold Springs 9630 .0 .0 * 16.5 15.4 107
Deer Park 9700 6.7 2.3 291 23.5 27.1 87
Hobbs Park 10100 9.7 5.5 176 20.1 20.6 98
Kirwin 9550 .0 1.3 0 19.5 17.0 115
Little Warm 9370 .0 .0 * 15.1 18.5 82
Owl Creek 8975 .0 .0 * 14.6 10.8 135
South Pass 9040 1.8 .2 900* 20.8 23.7 88
St. Lawrence Alt 8620 .0 .0 * 15.4 14.6 105
Togwotee Pass 9580 13.6 18.6 73 30.4 31.1 98
Townsend Creek 8700 .0 .0 * 20.8 18.3 114
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Basin Index (%) 114* 100
BIGHORN BASIN
Bald Mtn. 9380 7.9 13.2 60 17.9 23.6 76
Bear Trap Meadow 8200 .0 .0 * 14.7 14.0 105
Bone Springs Div 9350 4.1 7.6 54 18.5 22.3 83
Grave Springs 8550 .0 .0 * 15.1 16.2 93
Kirwin 9550 .0 1.3 0 19.5 17.0 115
Marquette 8760 .0 -M * 22.7 -M *
Middle Powder 7760 .0 .0 * 17.3 17.4 99
Owl Creek 8975 .0 .0 * 14.6 10.8 135
Powder River Pass 9480 .0 .0 * 19.2 18.8 102
Shell Creek 9580 4.0 8.2 49 15.8 20.0 79
Timber Creek 7950 .0 .0 * 20.3 13.6 149
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Basin Index (%) 53* 100
SHOSHONE RIVER
Blackwater 9780 14.6 18.8 78 25.9 27.5 94
Evening Star 9200 3.7 17.1 22 30.6 35.0 87
Marquette 8760 .0 -M * 22.7 -M *
Sylvan Road 7120 .0 .0 * 19.9 21.4 93
Younts Peak 8350 -M 2.4 * -M 20.8 *
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Basin Index (%) 51* 91
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * 14.7 14.0 105
Cloud Peak Reservoir 9860 10.3 4.0 258 21.7 21.3 102
Grave Springs 8550 .0 .0 * 15.1 16.2 93
Hansen Sawmill 8360 .0 .0 * 17.3 14.2 122
Middle Powder 7760 .0 .0 * 17.3 17.4 99
Powder River Pass 9480 .0 .0 * 19.2 18.8 102
Soldier Park 8720 .0 -M * 16.2 -M *
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Basin Index (%) 258* 103
TONGUE RIVER
Big Goose 7990 .0 .0 * 21.0 18.2 115
Bone Springs Div 9350 4.1 7.6 54 18.5 22.3 83
Burgess Junction 7880 .0 .0 * 17.7 18.2 97
Dome Lake 8880 2.8 .0 * 20.7 20.4 101
Little Goose 8870 1.5 -M * 22.7 -M *
Sucker Creek 8880 .0 .0 * 20.4 21.6 94
Tie Creek 6870 .0 .0 * 19.0 18.8 101
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Basin Index (%) 91* 98
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * 15.4 17.0 91
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Basin Index (%) * 91
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 15.5 18.6 83
North Rapid Creek 6130 .0 .0 * 17.3 16.2 107
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Basin Index (%) * 94
UPPER N. PLATTE
Arapaho Ridge 10960 15.6 7.0 223 27.1 29.3 92
Blackhall Mtn 9820 13.7 -M * 33.0 -M *
Columbine 9160 .0 .0 * -M 31.6 *
Divide Peak 8880 .0 .0 * 22.2 27.5 81
Joe Wright 10120 13.6 13.4 101 34.1 34.4 99
Laprele Creek 8375 .0 .0 * 15.3 18.1 85
Med Bow 10500 29.5 -M * 36.5 -M *
North French Creek 10130 18.5 19.6 94 32.7 35.1 93
Never Summer 10280 17.5 15.2 115 23.7 -M *
Old Battle 10000 22.1 23.0 96 32.1 43.6 74
Rawah 9020 .0 .0 * 21.3 19.7 108
Sage Creek Basin 7850 -M .0 * 14.0 18.0 78
Sand Lake 10050 24.0 20.0 120 31.3 33.3 94
South Brush Creek 8440 .0 .0 * 17.4 21.1 82
Tower 10500 27.7 35.6 78 46.2 49.4 94
Webber Springs 9250 .0 .0 * 27.0 33.2 81
Willow Creek Pass 9540 .5 .0 * 18.1 18.6 97
Zirkel 9340 .0 .0 * 34.1 34.2 100
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Basin Index (%) 104* 90
SWEETWATER
Deer Park 9700 6.7 2.3 291 23.5 27.1 87
Larsen Creek 9000 .0 .0 * 14.7 -M *
South Pass 9040 1.8 .2 900* 20.8 23.7 88
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Basin Index (%) 340* 87
LOWER N. PLATTE
Casper Mtn. 7900 .0 .0 * 20.4 21.8 94
Laprele Creek 8375 .0 .0 * 15.3 18.1 85
Reno Hill 8400 .1 .0 * 23.8 22.8 104
Windy Peak 7900 .0 .0 * 15.0 16.2 93
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Basin Index (%) * 94
LARAMIE RIVER
Brooklyn Lake 10240 8.5 4.0 212 29.7 28.4 105
Cinnabar Park 9574 3.0 .0 * 27.3 30.5 90
Crow Creek 8330 -M .0 * 18.6 16.3 114
Deadman Hill 10220 12.9 6.8 190 26.1 24.1 108
Rawah 9020 .0 .0 * 21.3 19.7 108
Roach 9700 .0 1.4 0* 23.7 25.8 92
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Basin Index (%) 200* 101
S. PLATTE
Black Mountain 8920 -M -M * 21.0 -M *
Crow Creek 8330 -M .0 * 18.6 16.3 114
Deadman Hill 10220 12.9 6.8 190 26.1 24.1 108
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Basin Index (%) 190* 111
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 .0 * 17.0 19.3 88
Divide Peak 8880 .0 .0 * 22.2 27.5 81
Elk River 8700 .0 .0 * 21.8 25.5 85
Little Snake River 8915 .0 1.4 0* 33.2 36.3 91
Old Battle 10000 22.1 23.0 96 32.1 43.6 74
Sage Creek Basin 7850 -M .0 * 14.0 18.0 78
Sandstone RS 8150 .0 .0 * 16.1 23.3 69
Whiskey Park 8950 1.2 5.2 23 33.6 35.0 96
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Basin Index (%) 79* 83
UPPER GREEN RIVER
Big Sandy Opening 9080 .0 .0 * 15.2 17.9 85
Blind Bull Sum 8650 14.4 10.7 135 22.7 24.4 93
East Rim Divide 7930 .0 .0 * 15.5 15.1 103
Elkhart Park G.S. 9400 .0 .0 * 15.2 18.0 84
Gros Ventre Summit 8750 .0 .0 * 13.7 17.1 80
Gunsight Pass 9820 .8 2.3 35 17.0 18.8 90
Kendall R.S. 7740 .0 .0 * 15.4 17.7 87
Loomis Park 8240 .0 .0 * 21.5 21.6 100
New Fork Lake 8340 .1 .0 * 15.4 14.6 105
Pocket Creek 9360 -M -M * 13.2 -M *
Snider Basin 8060 .0 .0 * 19.6 17.6 111
Spring Creek Divide 9000 14.3 10.7 134 29.7 29.2 102
Triple Peak 8500 .1 .0 * 32.1 31.6 102
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Basin Index (%) 125* 96
LOWER GREEN RIVER
Blacks Fork Jct 8870 .3 -M * 14.6 -M *
Buck Pasture 9700 .0 -M * 19.3 -M *
EF Blacks Fork GS 9360 .0 -M * 16.1 -M *
Hams Fork 7840 .0 .0 * 14.3 15.3 93
Hewinta 9519 .0 .0 * 17.0 18.7 91
Hickerson Park 9145 .0 .0 * 15.7 14.4 109
Hole-in-Rock 9150 .0 .0 * 15.7 14.0 112
Indian Creek 9425 7.8 9.8 80 25.7 28.1 91
Kelley R.S. 8180 .0 .0 * 19.6 22.9 86
Spirit Lk 10235 .0 -M * 20.4 -M *
Steel Creek Park 10200 6.3 9.1 69 19.4 22.2 87
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Basin Index (%) 75* 94
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 12.1 -M *
Bug Lake 7950 .3 .0 * 19.9 24.5 81
Burts Miller Ranch 8000 .0 -M * 6.8 -M *
Chalk Creek #1 8993 .0 5.1 0 22.6 32.1 70
Hayden Fork 9212 .0 .0 * 19.9 26.8 74
Kelley R.S. 8180 .0 .0 * 19.6 22.9 86
Lily Lake 9156 .0 .0 * 14.5 22.4 65
Monte Cristo 8960 .4 3.4 12 26.1 32.9 79
Salt River Summit 7760 .0 .0 * 19.4 20.9 93
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Basin Index (%) 8* 78
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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.