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 5 , 2018
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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 7060 .0 .0 * 28.7 26.1 110
Black Bear 8170 27.7 20.2 137 51.8 47.0 110
Blind Bull Sum 8650 -M 8.2 * 27.1 24.7 110
Cottonwood Creek 7670 -M .0 * 34.8 31.9 109
East Rim Divide 7930 .0 .0 * 17.3 15.4 112
Grand Targhee 9260 -M 38.3 * 44.7 39.3 114
Granite Creek 6770 .0 .0 * 28.8 24.6 117
Grassy Lake 7265 .1 .3 33* 44.6 44.3 101
Gros Ventre Summit 8750 -M .0 * 21.6 17.3 125
Gunsight Pass 9820 1.0 .4 250* 23.4 19.0 123
Lewis Lake Divide 7850 6.4 7.3 88 49.2 43.2 114
Phillips Bench 8200 2.6 6.3 41 37.2 34.8 107
Salt River Summit 7640 .0 .0 * 16.6 21.2 78
Snake River Station 6920 .0 .0 * 30.2 28.2 107
Spring Creek Divide 9000 5.5 8.2 67 30.6 29.5 104
Thumb Divide 7980 .1 .0 * 24.6 24.2 102
Togwotee Pass 9580 18.9 18.0 105 42.0 31.4 134
Two Ocean Plateau 9240 21.6 22.5 96 38.2 34.8 110
Willow Creek 8080 .0 .4 0* 46.4 43.2 107
Younts Peak 8350 -M 1.1 * -M 21.1 *
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Basin Index (%) 100* 110
MADISON-GALLATIN
Black Bear 8170 27.7 20.2 137 51.8 47.0 110
Canyon 7870 .0 .0 * 24.7 21.3 116
Madison Plateau 7750 2.5 2.9 86 36.8 33.8 109
West Yellowstone 6700 .0 .0 * 23.1 19.2 120
Whiskey Creek 6800 .0 .0 * 28.6 26.3 109
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Basin Index (%) 131* 112
YELLOWSTONE
Beartooth Lake 9360 32.3 14.7 220 41.9 25.6 164
Burnt Mtn 5880 .0 .0 * 23.7 21.2 112
Canyon 7870 .0 .0 * 24.7 21.3 116
Cole Creek 7850 .0 5.3 0 23.1 21.8 106
Evening Star 9200 23.3 15.2 153 53.3 35.5 150
Fisher Creek 9100 36.4 25.9 141 55.5 40.7 136
Northeast Entrance 7350 .0 .0 * 23.4 17.1 137
Parker Peak 9400 13.2 11.0 120 37.0 24.2 153
Sylvan Lake 8420 .0 2.5 0 35.8 29.8 120
Thumb Divide 7980 .1 .0 * 24.6 24.2 102
Two Ocean Plateau 9240 21.6 22.5 96 38.2 34.8 110
White Mill 8700 21.9 14.2 154 37.9 31.0 122
Wolverine 7650 .0 .0 * 26.2 16.8 156
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Basin Index (%) 134 129
WIND RIVER
Burroughs Creek 8750 .0 -M * 26.2 -M *
Castle Creek 8400 .0 -M * 15.8 -M *
Cold Springs 9630 .0 .0 * 16.0 15.8 101
Deer Park 9700 .0 .1 0* 22.9 27.5 83
Hobbs Park 10100 .2 3.6 6 22.4 21.0 107
Kirwin 9550 .0 .5 0* 25.6 17.4 147
Little Warm 9370 .0 .0 * 23.2 18.8 123
Owl Creek 8975 .0 .0 * 13.0 11.1 117
South Pass 9040 .1 .0 * 14.9 24.0 62
St. Lawrence Alt 8620 .0 .0 * 13.9 15.0 93
Togwotee Pass 9580 18.9 18.0 105 42.0 31.4 134
Townsend Creek 8700 .0 .0 * 15.8 18.6 85
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Basin Index (%) 86* 105
BIGHORN BASIN
Bald Mtn. 9380 1.3 11.3 12 24.8 23.9 104
Bear Trap Meadow 8200 .0 .0 * 15.0 14.2 106
Bone Springs Div 9350 .0 4.9 0 23.1 22.7 102
Grave Springs 8550 .0 .0 * 11.5 16.4 70
Kirwin 9550 .0 .5 0* 25.6 17.4 147
Marquette 8760 .0 -M * 18.4 -M *
Middle Powder 7760 .0 .0 * 11.4 17.7 64
Owl Creek 8975 .0 .0 * 13.0 11.1 117
Powder River Pass 9480 .0 .0 * 24.3 19.2 127
Shell Creek 9580 2.3 6.3 37 23.0 20.3 113
Timber Creek 7950 .0 .0 * 7.9 14.0 56
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Basin Index (%) 16* 102
SHOSHONE RIVER
Blackwater 9780 23.2 16.8 138 39.7 27.8 143
Evening Star 9200 23.3 15.2 153 53.3 35.5 150
Marquette 8760 .0 -M * 18.4 -M *
Sylvan Road 7120 .0 .0 * 27.9 21.7 129
Younts Peak 8350 -M 1.1 * -M 21.1 *
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Basin Index (%) 145* 142
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * 15.0 14.2 106
Cloud Peak Reservoir 9860 -M 1.9 * 23.9 21.6 111
Grave Springs 8550 .0 .0 * 11.5 16.4 70
Hansen Sawmill 8360 .0 .0 * 17.7 14.6 121
Middle Powder 7760 .0 .0 * 11.4 17.7 64
Powder River Pass 9480 .0 .0 * 24.3 19.2 127
Soldier Park 8720 .0 -M * 17.0 -M *
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Basin Index (%) * 100
TONGUE RIVER
Big Goose 7990 .0 .0 * 15.9 18.5 86
Bone Springs Div 9350 .0 4.9 0 23.1 22.7 102
Burgess Junction 7880 .0 .0 * 18.2 18.4 99
Dome Lake 8880 .1 .0 * 22.3 20.6 108
Little Goose 8870 .0 -M * 19.6 -M *
Sucker Creek 8880 .0 .0 * 19.7 21.9 90
Tie Creek 6870 .0 .0 * 16.6 19.0 87
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Basin Index (%) 2* 96
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * 15.8 17.5 90
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Basin Index (%) * 90
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 16.8 19.0 88
North Rapid Creek 6130 .0 .0 * 15.2 16.6 92
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Basin Index (%) * 90
UPPER N. PLATTE
Arapaho Ridge 10960 .2 4.8 4 25.9 29.8 87
Blackhall Mtn 9820 .0 -M * 31.6 -M *
Columbine 9160 -M .0 * 30.1 31.8 95
Divide Peak 8880 .0 .0 * 21.9 27.7 79
Joe Wright 10120 .2 11.8 2 35.9 34.8 103
Laprele Creek 8375 .1 .0 * 13.1 18.4 71
Med Bow 10500 14.6 -M * 40.7 -M *
North French Creek 10130 4.5 17.6 26 33.9 35.5 95
Never Summer 10280 3.0 13.6 22 21.5 -M *
Old Battle 10000 3.4 19.4 18 28.7 44.0 65
Rawah 9020 .1 .0 * 19.0 20.3 94
Sage Creek Basin 7850 -M .0 * 12.5 18.1 69
Sand Lake 10050 8.7 18.5 47 29.6 33.7 88
South Brush Creek 8440 .0 .0 * 15.5 21.4 72
Tower 10500 11.9 33.6 35 43.3 49.8 87
Webber Springs 9250 .0 .0 * 24.9 33.4 75
Willow Creek Pass 9540 .1 .0 * 17.3 18.9 92
Zirkel 9340 .0 .0 * 36.1 34.6 104
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Basin Index (%) 27* 86
SWEETWATER
Deer Park 9700 .0 .1 0* 22.9 27.5 83
Larsen Creek 9000 .1 .0 * 16.5 -M *
South Pass 9040 .1 .0 * 14.9 24.0 62
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Basin Index (%) 200* 73
LOWER N. PLATTE
Casper Mtn. 7900 .0 .0 * 12.8 22.2 58
Laprele Creek 8375 .1 .0 * 13.1 18.4 71
Reno Hill 8400 .0 .0 * 18.1 23.1 78
Windy Peak 7900 .0 .0 * 14.6 16.6 88
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Basin Index (%) * 73
LARAMIE RIVER
Brooklyn Lake 10240 .0 1.8 0* 31.3 28.6 109
Cinnabar Park 9574 .0 .0 * 28.5 31.0 92
Crow Creek 8330 .0 .0 * 15.8 17.3 91
Deadman Hill 10220 .1 3.7 3 24.3 24.4 100
Rawah 9020 .1 .0 * 19.0 20.3 94
Roach 9700 .0 .2 0* 21.4 26.1 82
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Basin Index (%) 4* 95
S. PLATTE
Black Mountain 8920 -M -M * 17.3 -M *
Crow Creek 8330 .0 .0 * 15.8 17.3 91
Deadman Hill 10220 .1 3.7 3 24.3 24.4 100
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Basin Index (%) 3* 96
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 .0 * 14.2 19.5 73
Divide Peak 8880 .0 .0 * 21.9 27.7 79
Elk River 8700 .0 .0 * 20.0 25.8 78
Little Snake River 8915 .0 .5 0* 32.2 36.7 88
Old Battle 10000 3.4 19.4 18 28.7 44.0 65
Sage Creek Basin 7850 -M .0 * 12.5 18.1 69
Sandstone RS 8150 .0 .0 * 12.1 23.6 51
Whiskey Park 8950 .0 2.0 0* 29.8 35.3 84
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Basin Index (%) 16* 74
UPPER GREEN RIVER
Big Sandy Opening 9080 -M .0 * 18.0 18.3 98
Blind Bull Sum 8650 -M 8.2 * 27.1 24.7 110
East Rim Divide 7930 .0 .0 * 17.3 15.4 112
Elkhart Park G.S. 9400 .0 .0 * 17.0 18.3 93
Gros Ventre Summit 8750 -M .0 * 21.6 17.3 125
Gunsight Pass 9820 1.0 .4 250* 23.4 19.0 123
Kendall R.S. 7740 .0 .0 * 21.4 18.0 119
Loomis Park 8240 .3 .0 * -M 21.8 *
New Fork Lake 8340 .0 .0 * 17.1 15.0 114
Pocket Creek 9360 -M -M * 13.4 -M *
Snider Basin 8060 .0 .0 * 18.5 17.8 104
Spring Creek Divide 9000 5.5 8.2 67 30.6 29.5 104
Triple Peak 8500 -M .0 * 39.1 31.9 123
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Basin Index (%) 79* 112
LOWER GREEN RIVER
Blacks Fork Jct 8869 .0 -M * 12.5 -M *
Buck Pasture 9632 .0 -M * 18.8 -M *
EF Blacks Fork GS 9360 .0 -M * 13.6 -M *
Hams Fork 7840 .0 .0 * 14.7 15.6 94
Hewinta 9500 .0 .0 * 15.6 18.9 83
Hickerson Park 9122 .3 .0 * 13.1 14.6 90
Hole-in-Rock 9168 .0 .0 * 13.6 14.2 96
Indian Creek 9425 .0 7.3 0 21.7 28.4 76
Kelley R.S. 8180 .0 .0 * 19.6 23.2 84
Spirit Lk 10235 .1 -M * 16.6 -M *
Steel Creek Park 10158 .0 7.6 0 19.4 22.4 87
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Basin Index (%) 2* 86
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 14.0 -M *
Bug Lake 7987 .0 .0 * 20.5 24.8 83
Burts Miller Ranch 8000 .0 -M * 8.1 -M *
Chalk Creek #1 9171 .0 2.8 0 20.1 32.4 62
Hayden Fork 9130 .0 .0 * 20.7 27.1 76
Kelley R.S. 8180 .0 .0 * 19.6 23.2 84
Lily Lake 9133 .0 .0 * 15.1 22.7 67
Monte Cristo 8932 .4 .0 * 27.2 33.2 82
Salt River Summit 7640 .0 .0 * 16.6 21.2 78
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Basin Index (%) 14* 76
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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.
