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 FRIDAY: JUNE 21 , 2019
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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 * 26.9 27.5 98
Black Bear 8170 15.8 4.0 395 56.5 49.0 115
Blind Bull Sum 8650 1.4 .0 * 26.2 26.0 101
Cottonwood Creek 7670 .0 .0 * 36.2 33.6 108
East Rim Divide 7930 .0 .0 * 18.3 16.3 112
Grand Targhee 9260 28.0 29.4 95 44.6 43.0 104
Granite Creek 6770 .0 .0 * 28.6 25.6 112
Grassy Lake 7265 -M .0 * -M 46.5 *
Gros Ventre Summit 8750 -M .0 * 18.2 18.6 98
Gunsight Pass 9820 .0 .0 * 23.0 20.6 112
Lewis Lake Divide 7850 .0 .0 * 47.7 45.1 106
Phillips Bench 8200 .0 .0 * 40.7 36.4 112
Salt River Summit 7640 .0 .0 * 25.6 22.3 115
Snake River Station 6920 .0 .0 * 32.4 29.9 108
Spring Creek Divide 9000 .0 .0 * 31.6 30.8 103
Thumb Divide 7980 .0 .0 * 25.4 25.8 98
Togwotee Pass 9580 8.0 7.6 105 33.0 33.0 100
Two Ocean Plateau 9240 7.5 10.7 70 33.4 36.9 91
Willow Creek 8080 .0 .0 * 47.6 45.2 105
Younts Peak 8350 -M .0 * -M 22.7 *
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Basin Index (%) 117* 105
MADISON-GALLATIN
Black Bear 8170 15.8 4.0 395 56.5 49.0 115
Canyon 7870 .2 .0 * 22.9 22.9 100
Madison Plateau 7750 .1 .0 * 38.4 35.5 108
West Yellowstone 6700 .0 .0 * 23.9 20.4 117
Whiskey Creek 6800 .0 .0 * 30.2 28.0 108
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Basin Index (%) 402* 110
YELLOWSTONE
Beartooth Lake 9360 14.3 3.1 461 29.8 27.3 109
Burnt Mtn 5880 -M .0 * -M 23.7 *
Canyon 7870 .2 .0 * 22.9 22.9 100
Cole Creek 7850 2.4 .0 * 27.4 24.0 114
Evening Star 9200 10.0 3.6 278 41.5 38.0 109
Fisher Creek 9100 -M 10.4 * 48.1 43.4 111
Northeast Entrance 7350 .2 .0 * 21.8 18.9 115
Parker Peak 9400 7.9 .2 3950* 35.1 26.4 133
Sylvan Lake 8420 .4 .0 * 37.5 32.1 117
Thumb Divide 7980 .0 .0 * 25.4 25.8 98
Two Ocean Plateau 9240 7.5 10.7 70 33.4 36.9 91
White Mill 8700 2.9 2.8 104 28.8 33.3 86
Wolverine 7650 .0 .0 * 19.8 18.2 109
Younts Peak 8350 -M .0 * -M 22.7 *
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Basin Index (%) 225* 107
WIND RIVER
Burroughs Creek 8750 .0 -M * 22.5 -M *
Castle Creek 8400 .0 -M * 13.8 -M *
Cold Springs 9630 .0 .0 * 17.2 17.0 101
Deer Park 9700 .1 .0 * 27.5 29.4 94
Hobbs Park 10100 3.1 .0 * 24.1 22.4 108
Kirwin 9550 .0 .0 * 21.3 18.9 113
Little Warm 9370 .0 .0 * 13.8 20.2 68
Owl Creek 8975 .0 .0 * 19.0 12.4 153
South Pass 9040 .1 .0 * 21.9 25.2 87
St. Lawrence Alt 8620 -M .0 * -M 16.1 *
Togwotee Pass 9580 8.0 7.6 105 33.0 33.0 100
Townsend Creek 8700 .0 .0 * 22.7 19.8 115
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Basin Index (%) 149* 101
BIGHORN BASIN
Bald Mtn. 9380 7.9 .6 1317* 25.7 26.1 98
Bear Trap Meadow 8200 .0 .0 * 16.2 15.7 103
Bone Springs Div 9350 .0 .0 * 21.3 24.8 86
Grave Springs 8550 .0 .0 * 18.8 17.8 106
Kirwin 9550 .0 .0 * 21.3 18.9 113
Marquette 8760 .0 -M * 25.7 -M *
Middle Powder 7760 .0 .0 * 20.7 19.3 107
Owl Creek 8975 .0 .0 * 19.0 12.4 153
Powder River Pass 9480 .0 .0 * 17.1 21.2 81
Shell Creek 9580 .8 .0 * 19.7 22.4 88
Timber Creek 7950 .0 .0 * 20.5 15.6 131
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Basin Index (%) 1450* 103
SHOSHONE RIVER
Blackwater 9780 14.3 7.5 191 36.5 29.8 122
Evening Star 9200 10.0 3.6 278 41.5 38.0 109
Marquette 8760 .0 -M * 25.7 -M *
Sylvan Lake 8420 .4 .0 * 37.5 32.1 117
Sylvan Road 7120 .1 .0 * 22.0 23.5 94
Younts Peak 8350 -M .0 * -M 22.7 *
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Basin Index (%) 223* 111
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * 16.2 15.7 103
Cloud Peak Reservoir 9860 .0 .0 * 23.3 23.6 99
Grave Springs 8550 .0 .0 * 18.8 17.8 106
Hansen Sawmill 8360 .0 .0 * 19.1 16.2 118
Middle Powder 7760 .0 .0 * 20.7 19.3 107
Powder River Pass 9480 .0 .0 * 17.1 21.2 81
Soldier Park 8720 .0 -M * 17.1 -M *
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Basin Index (%) * 101
TONGUE RIVER
Big Goose 7990 .1 .0 * 24.9 19.9 125
Bone Springs Div 9350 .0 .0 * 21.3 24.8 86
Burgess Junction 7880 .0 .0 * 21.8 20.1 108
Dome Lake 8880 -M .0 * 24.5 22.5 109
Little Goose 8870 .0 -M * 18.0 -M *
Sucker Creek 8880 .0 .0 * 24.9 23.9 104
Tie Creek 6870 .0 .0 * -M 21.2 *
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Basin Index (%) * 106
BELLE FOURCHE
Blind Park 6890 .1 .0 * 14.3 21.2 67
Cole Canyon 5910 .0 .0 * 24.2 19.3 125
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Basin Index (%) * 95
CHEYENNE RIVER BASIN
Blind Park 6890 .1 .0 * 14.3 21.2 67
North Rapid Creek 6130 -M .0 * 14.9 19.1 78
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Basin Index (%) * 72
UPPER N. PLATTE
Arapaho Ridge 10960 11.1 .0 * 36.7 31.1 118
Blackhall Mtn 9820 5.3 -M * 44.4 -M *
Columbine 9160 .0 .0 * 37.7 32.7 115
Divide Peak 8880 .0 .0 * 32.1 28.7 112
Joe Wright 10120 4.5 .0 * 40.0 36.2 110
Laprele Creek 8375 .0 .0 * 21.6 19.6 110
Med Bow 10500 23.8 -M * 47.1 -M *
Never Summer 10280 7.4 .7 1057* 27.5 -M *
North French Creek 10130 11.3 2.0 565* 40.8 37.0 110
Old Battle 10000 25.2 .2 12600* 47.6 45.4 105
Rawah 9020 .2 .0 * 24.3 21.3 114
Sage Creek Basin 7850 -M .0 * 23.1 19.0 122
Sand Lake 10050 18.9 3.5 540 34.7 35.4 98
South Brush Creek 8440 .0 .0 * 18.5 22.5 82
Tower 10500 31.4 11.5 273 59.8 51.3 117
Webber Springs 9250 .0 .0 * 41.5 34.6 120
Whiskey Park 8950 .1 .0 * 42.6 36.6 116
Willow Creek Pass 9540 .2 .0 * 23.3 20.0 116
Zirkel 9340 .0 .0 * 43.4 36.5 119
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Basin Index (%) 616* 112
SWEETWATER
Deer Park 9700 .1 .0 * 27.5 29.4 94
Larsen Creek 9000 .0 .0 * 19.5 -M *
South Pass 9040 .1 .0 * 21.9 25.2 87
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Basin Index (%) * 90
LOWER N. PLATTE
Casper Mtn. 7900 .0 .0 * 24.2 23.7 102
Laprele Creek 8375 .0 .0 * 21.6 19.6 110
Reno Hill 8400 .1 .0 * 28.4 24.3 117
Windy Peak 7900 .1 .0 * 18.9 17.9 106
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Basin Index (%) * 109
LARAMIE RIVER
Brooklyn Lake 10240 .1 .0 * 35.5 30.0 118
Cinnabar Park 9574 -M .0 * 33.1 32.5 102
Crow Creek 8330 .1 .0 * 18.4 18.9 97
Deadman Hill 10220 .2 .0 * 26.8 25.4 106
Rawah 9020 .2 .0 * 24.3 21.3 114
Roach 9700 .2 .0 * 32.4 27.4 118
Windy Peak 7900 .1 .0 * 18.9 17.9 106
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Basin Index (%) * 109
S. PLATTE
Black Mountain 8920 .0 -M * 20.7 -M *
Crow Creek 8330 .1 .0 * 18.4 18.9 97
Deadman Hill 10220 .2 .0 * 26.8 25.4 106
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Basin Index (%) * 102
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 .0 * 22.8 20.4 112
Divide Peak 8880 .0 .0 * 32.1 28.7 112
Elk River 8700 .0 .0 * 27.5 26.8 103
Little Snake River 8915 .0 .0 * 48.7 38.2 127
Old Battle 10000 25.2 .2 12600* 47.6 45.4 105
Sage Creek Basin 7850 -M .0 * 23.1 19.0 122
Sandstone RS 8150 .0 .0 * 24.4 24.5 100
Whiskey Park 8950 .1 .0 * 42.6 36.6 116
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Basin Index (%) 12650* 112
UPPER GREEN RIVER
Big Sandy Opening 9080 .0 .0 * 20.0 19.5 103
Blind Bull Sum 8650 1.4 .0 * 26.2 26.0 101
East Rim Divide 7930 .0 .0 * 18.3 16.3 112
Elkhart Park G.S. 9400 .0 .0 * 21.6 19.5 111
Gros Ventre Summit 8750 -M .0 * 18.2 18.6 98
Gunsight Pass 9820 .0 .0 * 23.0 20.6 112
Indian Creek 9425 .0 .0 * 27.4 29.6 93
Kendall R.S. 7740 .0 .0 * 18.2 18.9 96
Loomis Park 8240 .6 .0 * 24.3 22.9 106
New Fork Lake 8340 .0 .0 * 17.1 16.1 106
Pocket Creek 9360 -M -M * 20.8 -M *
Snider Basin 8060 .0 .0 * 19.7 18.6 106
Spring Creek Divide 9000 .0 .0 * 31.6 30.8 103
Triple Peak 8500 -M .0 * -M 33.3 *
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Basin Index (%) * 103
LOWER GREEN RIVER
Blacks Fork Jct 8869 .0 -M * 20.1 -M *
Buck Pasture 9632 .0 -M * 29.1 -M *
EF Blacks Fork GS 9360 .0 -M * 20.2 -M *
Hams Fork 7840 .0 .0 * 20.6 16.5 125
Hewinta 9500 .0 .0 * 22.6 19.8 114
Hickerson Park 9122 .0 .0 * 18.3 15.5 118
Hole-in-Rock 9168 .0 .0 * 18.7 15.1 124
Indian Creek 9425 .0 .0 * 27.4 29.6 93
Kelley R.S. 8180 .0 .0 * 25.1 24.2 104
Spirit Lk 10235 .0 -M * 25.6 -M *
Steel Creek Park 10158 -M .0 * 27.9 23.3 120
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Basin Index (%) * 112
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 21.9 -M *
Bug Lake 7987 .0 .0 * 33.1 25.8 128
Burts Miller Ranch 8000 .0 -M * 11.9 -M *
Chalk Creek #1 9171 .0 .0 * 39.3 33.8 116
Hayden Fork 9130 .0 .0 * 31.8 28.3 112
Kelley R.S. 8180 .0 .0 * 25.1 24.2 104
Lily Lake 9133 .0 .0 * 23.4 23.8 98
Monte Cristo 8932 .4 .0 * 42.8 34.5 124
Salt River Summit 7640 .0 .0 * 25.6 22.3 115
Spring Creek Divide 9000 .0 .0 * 31.6 30.8 103
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Basin Index (%) * 113
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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.
