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 WEDNESDAY: JULY 19 , 2017
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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 -M .0 * 45.5 28.5 160
Black Bear 8170 .0 .0 * 65.8 50.5 130
Blind Bull Sum 8650 -M .0 * 42.3 27.0 157
Cottonwood Creek 7670 .0 .0 * 48.6 34.6 140
East Rim Divide 7930 .1 .0 * 26.0 17.0 153
Grand Targhee 9260 .0 .0 * 57.6 43.4 133
Granite Creek 6770 .0 .0 * 43.6 26.4 165
Grassy Lake 7265 .0 .0 * 66.9 47.8 140
Gros Ventre Summit 8750 .0 .0 * 29.8 19.7 151
Gunsight Pass 9820 .0 .0 * 32.9 21.5 153
Lewis Lake Divide 7850 .1 .0 * 67.3 46.5 145
Phillips Bench 8200 .0 .0 * 55.2 37.3 148
Salt River Summit 7760 .0 .0 * 33.2 23.3 142
Snake River Station 6920 -M .0 * 43.5 31.1 140
Spring Creek Divide 9000 .0 .0 * 47.7 31.9 150
Thumb Divide 7980 -M .0 * 33.8 26.7 127
Togwotee Pass 9580 .0 .0 * 49.0 34.1 144
Two Ocean Plateau 9240 -M .0 * -M 38.6 *
Willow Creek 8380 .0 .0 * 62.6 46.4 135
Younts Peak 8350 .0 .0 * 39.6 24.2 164
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Basin Index (%) * 144
MADISON-GALLATIN
Black Bear 8170 .0 .0 * 65.8 50.5 130
Canyon 7870 .0 .0 * 31.7 24.2 131
Madison Plateau 7750 .0 .0 * 44.1 36.8 120
West Yellowstone 6700 .0 .0 * 28.4 21.3 133
Whiskey Creek 6800 .0 .0 * 34.2 29.4 116
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Basin Index (%) * 126
YELLOWSTONE
Beartooth Lake 9360 .0 .0 * 36.4 29.0 126
Burnt Mtn 5880 .0 .0 * 27.1 25.3 107
Canyon 7870 .0 .0 * 31.7 24.2 131
Cole Creek 7850 .0 .0 * 22.0 25.9 85
Evening Star 9200 .0 .0 * 56.1 39.7 141
Fisher Creek 9100 .0 .0 * 58.7 45.9 128
Northeast Entrance 7350 .0 .0 * 26.9 20.8 129
Parker Peak 9400 .0 .0 * 45.4 27.9 163
Sylvan Lake 8420 .0 .0 * 47.1 33.7 140
Thumb Divide 7980 -M .0 * 33.8 26.7 127
Two Ocean Plateau 9240 -M .0 * -M 38.6 *
White Mill 8700 .0 .0 * 45.1 35.4 127
Wolverine 7650 .0 .0 * 27.8 19.5 143
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Basin Index (%) * 129
WIND RIVER
Burroughs Creek 8750 .0 -M * 33.9 -M *
Castle Creek 8400 .0 -M * 21.9 -M *
Cold Springs 9630 .0 .0 * 27.2 18.0 151
Deer Park 9700 .0 .0 * 48.9 30.3 161
Hobbs Park 10100 .0 .0 * 40.6 23.6 172
Kirwin 9550 .0 .0 * 33.8 20.8 162
Little Warm 9370 .0 .0 * 31.5 21.4 147
Owl Creek 8975 .0 .0 * 19.6 13.6 144
South Pass 9040 .0 .0 * 39.3 26.0 151
St. Lawrence Alt 8620 .0 .0 * 24.6 17.1 144
Togwotee Pass 9580 .0 .0 * 49.0 34.1 144
Townsend Creek 8700 .0 .0 * 33.2 20.7 160
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Basin Index (%) * 154
BIGHORN BASIN
Bald Mtn. 9380 .0 .0 * 26.5 27.7 96
Bear Trap Meadow 8200 .0 .0 * 20.1 17.0 118
Bone Springs Div 9350 .0 .0 * 27.8 26.4 105
Grave Springs 8550 .0 .0 * 16.5 19.2 86
Kirwin 9550 .0 .0 * 33.8 20.8 162
Marquette 8760 .0 -M * 29.4 -M *
Middle Powder 7760 .0 .0 * 18.3 20.8 88
Owl Creek 8975 .0 .0 * 19.6 13.6 144
Powder River Pass 9480 .0 .0 * 23.5 22.5 104
Shell Creek 9580 .0 .0 * 25.1 24.0 105
Timber Creek 7950 .0 .0 * 20.9 16.7 125
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Basin Index (%) * 111
SHOSHONE RIVER
Blackwater 9780 .0 .0 * 51.8 31.3 165
Evening Star 9200 .0 .0 * 56.1 39.7 141
Marquette 8760 .0 -M * 29.4 -M *
Sylvan Road 7120 .0 .0 * 36.2 24.7 147
Younts Peak 8350 .0 .0 * 39.6 24.2 164
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Basin Index (%) * 153
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * 20.1 17.0 118
Cloud Peak Reservoir 9860 .0 .0 * 32.4 25.4 128
Grave Springs 8550 .0 .0 * 16.5 19.2 86
Hansen Sawmill 8360 .0 .0 * 25.4 17.7 144
Middle Powder 7760 .0 .0 * 18.3 20.8 88
Powder River Pass 9480 .0 .0 * 23.5 22.5 104
Soldier Park 8720 .0 -M * 26.6 -M *
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Basin Index (%) * 111
TONGUE RIVER
Big Goose 7990 .0 .0 * 23.7 20.7 114
Bone Springs Div 9350 .0 .0 * 27.8 26.4 105
Burgess Junction 7880 .0 .0 * 25.0 21.6 116
Dome Lake 8880 .0 .0 * 28.8 23.8 121
Little Goose 8870 .0 -M * 28.6 -M *
Sucker Creek 8880 .0 .0 * 27.8 25.6 109
Tie Creek 6870 .0 .0 * 27.9 22.5 124
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Basin Index (%) * 115
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * 17.9 20.8 86
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Basin Index (%) * 86
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 19.0 23.2 82
North Rapid Creek 6130 .0 .0 * 18.7 21.5 87
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Basin Index (%) * 84
UPPER N. PLATTE
Arapaho Ridge 10960 .1 .0 * 33.6 32.8 102
Blackhall Mtn 9820 -M -M * 46.1 -M *
Columbine 9160 .3 .0 * 36.2 33.9 107
Divide Peak 8880 .0 .0 * 27.5 29.6 93
Joe Wright 10120 -M .0 * 38.5 37.9 102
Laprele Creek 8375 .0 .0 * 19.3 20.6 94
Med Bow 10500 .0 -M * 45.6 -M *
North French Creek 10130 -M .0 * 37.5 38.5 97
Never Summer 10280 .0 .0 * 26.8 -M *
Old Battle 10000 -M .0 * 47.1 46.6 101
Rawah 9020 .1 .0 * 23.6 22.3 106
Sage Creek Basin 7850 -M .0 * 19.5 19.7 99
Sand Lake 10050 .2 .0 * 39.1 36.7 107
South Brush Creek 8440 .0 .0 * 18.0 23.5 77
Tower 10500 .0 .0 * 60.0 52.8 114
Webber Springs 9250 .1 .0 * 40.5 35.7 113
Willow Creek Pass 9540 .1 .0 * 24.1 21.3 113
Zirkel 9340 .6 .0 * 51.7 37.6 138
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Basin Index (%) * 105
SWEETWATER
Deer Park 9700 .0 .0 * 48.9 30.3 161
Larsen Creek 9000 .0 .0 * 29.2 -M *
South Pass 9040 .0 .0 * 39.3 26.0 151
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Basin Index (%) * 157
LOWER N. PLATTE
Casper Mtn. 7900 .0 .0 * 24.2 24.6 98
Laprele Creek 8375 .0 .0 * 19.3 20.6 94
Reno Hill 8400 .0 .0 * 23.4 25.4 92
Windy Peak 7900 .1 .0 * 19.7 19.1 103
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Basin Index (%) * 97
LARAMIE RIVER
Brooklyn Lake 10240 -M .0 * 32.0 31.4 102
Cinnabar Park 9574 .0 .0 * 30.7 33.5 92
Crow Creek 8330 -M .0 * 17.0 20.4 83
Deadman Hill 10220 .0 .0 * 30.5 26.6 115
Rawah 9020 .1 .0 * 23.6 22.3 106
Roach 9700 .0 .0 * 29.4 28.7 102
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Basin Index (%) * 100
S. PLATTE
Black Mountain 8920 -M -M * 21.3 -M *
Crow Creek 8330 -M .0 * 17.0 20.4 83
Deadman Hill 10220 .0 .0 * 30.5 26.6 115
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Basin Index (%) * 101
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 .0 * 21.0 21.0 100
Divide Peak 8880 .0 .0 * 27.5 29.6 93
Elk River 8700 .0 .0 * 25.7 27.9 92
Little Snake River 8915 .2 .0 * 46.4 38.9 119
Old Battle 10000 -M .0 * 47.1 46.6 101
Sage Creek Basin 7850 -M .0 * 19.5 19.7 99
Sandstone RS 8150 .1 .0 * 20.1 25.3 79
Whiskey Park 8950 -M .0 * 38.0 37.6 101
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Basin Index (%) * 99
UPPER GREEN RIVER
Big Sandy Opening 9080 .0 .0 * 29.0 20.4 142
Blind Bull Sum 8650 -M .0 * 42.3 27.0 157
East Rim Divide 7930 .1 .0 * 26.0 17.0 153
Elkhart Park G.S. 9400 .0 .0 * 29.5 20.5 144
Gros Ventre Summit 8750 .0 .0 * 29.8 19.7 151
Gunsight Pass 9820 .0 .0 * 32.9 21.5 153
Kendall R.S. 7740 .0 .0 * 35.6 19.7 181
Loomis Park 8240 -M .0 * 38.4 23.8 161
New Fork Lake 8340 .0 .0 * 26.3 16.9 156
Pocket Creek 9360 .0 -M * -M -M *
Snider Basin 8060 .0 .0 * 30.8 19.3 160
Spring Creek Divide 9000 .0 .0 * 47.7 31.9 150
Triple Peak 8500 .0 .0 * 48.5 34.4 141
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Basin Index (%) * 153
LOWER GREEN RIVER
Blacks Fork Jct 8869 .0 -M * 20.2 -M *
Buck Pasture 9632 .0 -M * 29.5 -M *
EF Blacks Fork GS 9360 .0 -M * 24.8 -M *
Hams Fork 7840 .0 .0 * 26.6 17.2 155
Hewinta 9500 .0 .0 * 22.9 21.3 108
Hickerson Park 9122 .0 .0 * 18.5 16.9 109
Hole-in-Rock 9168 .0 .0 * 19.6 16.4 120
Indian Creek 9425 .1 .0 * 48.5 30.4 160
Kelley R.S. 8180 .0 .0 * 37.4 25.0 150
Spirit Lk 10235 .0 -M * 25.6 -M *
Steel Creek Park 10158 .0 .0 * 27.7 24.7 112
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Basin Index (%) * 132
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 23.0 -M *
Bug Lake 7987 .0 .0 * 40.2 26.4 152
Burts Miller Ranch 8000 .0 -M * 12.8 -M *
Chalk Creek #1 9171 .0 .0 * 43.4 34.9 124
Hayden Fork 9130 .0 .0 * 33.7 29.3 115
Kelley R.S. 8180 .0 .0 * 37.4 25.0 150
Lily Lake 9133 .0 .0 * 26.6 24.8 107
Monte Cristo 8932 .0 .0 * 48.8 35.2 139
Salt River Summit 7760 .0 .0 * 33.2 23.3 142
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Basin Index (%) * 132
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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.