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: OCTOBER 24 , 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 .2 .0 * 1.4 1.5 93
Black Bear 8170 1.3 2.0 65* 3.1 2.9 107
Blind Bull Sum 8650 .0 .8 0* 2.0 1.5 133
Cottonwood Creek 7670 .2 .2 100* 2.1 1.9 111
East Rim Divide 7930 .0 .0 * 1.5 1.0 150
Grand Targhee 9260 2.1 4.0 52* 3.2 4.7 68
Granite Creek 6770 .2 .0 * 2.0 1.4 143
Grassy Lake 7265 .3 .4 75* 2.9 2.5 116
Gros Ventre Summit 8750 .3 1.2 25* 1.2 1.3 92
Gunsight Pass 9820 .2 .7 29* 1.9 1.8 106
Lewis Lake Divide 7850 .0 .3 0* 2.0 2.4 83
Phillips Bench 8200 .0 .2 0* 2.2 1.8 122
Salt River Summit 7640 .0 .0 * 2.0 1.3 154
Snake River Station 6920 .1 .0 * 1.9 2.1 90
Spring Creek Divide 9000 .4 .7 57* 2.1 1.6 131
Thumb Divide 7980 .0 .0 * 1.4 1.7 82
Togwotee Pass 9580 .9 2.1 43* 1.4 2.1 67
Two Ocean Plateau 9240 2.1 2.5 84* 1.8 2.3 78
Willow Creek 8080 .1 .4 25* 3.5 2.7 130
Younts Peak 8350 -M 1.0 * -M 1.7 *
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Basin Index (%) 54* 103
MADISON-GALLATIN
Black Bear 8170 1.3 2.0 65* 3.1 2.9 107
Canyon 7870 .3 .3 100* 1.8 1.5 120
Madison Plateau 7750 .0 .8 0* 2.1 2.1 100
West Yellowstone 6700 .1 .0 * 1.5 1.5 100
Whiskey Creek 6800 .1 .2 50* 1.1 1.8 61
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Basin Index (%) 55* 98
YELLOWSTONE
Beartooth Lake 9360 1.0 1.9 53* 1.0 1.7 59
Burnt Mtn 5880 .5 .0 * 2.6 2.8 93
Canyon 7870 .3 .3 100* 1.8 1.5 120
Cole Creek 7850 2.8 1.7 165* 2.7 2.4 112
Evening Star 9200 1.5 1.6 94* 2.4 2.4 100
Fisher Creek 9100 1.2 1.8 67* 2.2 2.7 81
Northeast Entrance 7350 .1 .0 * 1.2 1.4 86
Parker Peak 9400 1.6 1.8 89* 2.5 2.1 119
Sylvan Lake 8420 1.1 1.1 100* 3.1 2.3 135
Thumb Divide 7980 .0 .0 * 1.4 1.7 82
Two Ocean Plateau 9240 2.1 2.5 84* 1.8 2.3 78
White Mill 8700 .6 1.5 40* 1.4 2.1 67
Wolverine 7650 .0 .0 * 1.1 1.5 73
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Basin Index (%) 90* 94
WIND RIVER
Burroughs Creek 8750 .0 -M * 1.3 -M *
Castle Creek 8400 .0 -M * .9 -M *
Cold Springs 9630 1.1 .3 367* 1.4 1.5 93
Deer Park 9700 1.3 1.4 93* 1.9 2.2 86
Hobbs Park 10100 1.5 1.3 115* 1.9 1.8 106
Kirwin 9550 .9 1.2 75 1.2 1.5 80
Little Warm 9370 .4 .8 50* 1.7 1.5 113
Owl Creek 8975 1.2 .4 300* 1.3 1.0 130
South Pass 9040 1.0 .7 143* 1.8 1.8 100
St. Lawrence Alt 8620 .0 .3 0* 1.9 1.4 136
Togwotee Pass 9580 .9 2.1 43* 1.4 2.1 67
Townsend Creek 8700 1.2 .3 400* 2.0 1.8 111
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Basin Index (%) 108* 99
BIGHORN BASIN
Bald Mtn. 9380 1.4 2.3 61 1.5 2.2 68
Bear Trap Meadow 8200 .8 .3 267* 1.5 1.4 107
Bone Springs Div 9350 1.5 1.9 79 1.8 2.2 82
Grave Springs 8550 .9 .6 150* 1.4 1.8 78
Kirwin 9550 .9 1.2 75 1.2 1.5 80
Marquette 8760 .2 -M * 1.0 -M *
Middle Powder 7760 .8 .6 133* 1.6 1.9 84
Owl Creek 8975 1.2 .4 300* 1.3 1.0 130
Powder River Pass 9480 .9 .9 100* 1.5 1.8 83
Shell Creek 9580 1.9 2.4 79 2.1 2.0 105
Timber Creek 7950 .3 .2 150* 1.2 1.6 75
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Basin Index (%) 98* 87
SHOSHONE RIVER
Blackwater 9780 1.7 2.0 85* 2.3 2.2 105
Evening Star 9200 1.5 1.6 94* 2.4 2.4 100
Marquette 8760 .2 -M * 1.0 -M *
Sylvan Road 7120 .0 .0 * 1.2 1.8 67
Younts Peak 8350 -M 1.0 * -M 1.7 *
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Basin Index (%) 89* 92
POWDER RIVER
Bear Trap Meadow 8200 .8 .3 267* 1.5 1.4 107
Cloud Peak Reservoir 9860 1.7 1.3 131* 2.0 2.3 87
Grave Springs 8550 .9 .6 150* 1.4 1.8 78
Hansen Sawmill 8360 .9 .1 900* 1.8 1.5 120
Middle Powder 7760 .8 .6 133* 1.6 1.9 84
Powder River Pass 9480 .9 .9 100* 1.5 1.8 83
Soldier Park 8720 .4 -M * 1.7 -M *
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Basin Index (%) 158* 92
TONGUE RIVER
Big Goose 7990 1.1 .7 157* 2.1 2.1 100
Bone Springs Div 9350 1.5 1.9 79 1.8 2.2 82
Burgess Junction 7880 1.0 .8 125* 1.8 1.9 95
Dome Lake 8880 1.3 1.2 108 2.2 2.2 100
Little Goose 8870 1.5 -M * 1.7 -M *
Sucker Creek 8880 1.5 1.1 136* 2.2 2.1 105
Tie Creek 6870 .2 .0 * 2.7 2.3 117
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Basin Index (%) 116* 100
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * 1.6 1.5 107
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Basin Index (%) * 107
CHEYENNE RIVER BASIN
Blind Park 6890 .1 .0 * 1.0 1.8 56
North Rapid Creek 6130 .0 .0 * .7 1.6 44
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Basin Index (%) * 50
UPPER N. PLATTE
Arapaho Ridge 10960 2.1 2.1 100* 3.7 2.5 148
Blackhall Mtn 9820 1.0 -M * 3.6 -M *
Columbine 9160 .2 .1 200* 3.3 2.0 165
Divide Peak 8880 .1 .8 12* 3.3 2.4 138
Joe Wright 10120 1.6 1.4 114* 4.3 2.6 165
Laprele Creek 8375 .1 .2 50* 1.5 1.5 100
Med Bow 10500 1.1 -M * 3.2 -M *
North French Creek 10130 .2 2.0 10* 2.6 2.5 104
Never Summer 10280 2.1 1.5 140* 3.4 -M *
Old Battle 10000 2.1 1.8 117* 4.6 3.1 148
Rawah 9020 .3 .1 300* 3.0 1.8 167
Sage Creek Basin 7850 .1 .0 * 2.5 1.8 139
Sand Lake 10050 1.1 1.8 61* 1.8 2.4 75
South Brush Creek 8440 .1 .3 33* 1.8 1.8 100
Tower 10500 2.7 2.3 117* 3.6 3.2 112
Webber Springs 9250 .8 .6 133* 4.0 2.4 167
Willow Creek Pass 9540 1.5 .6 250* 2.8 1.5 187
Zirkel 9340 .2 .4 50* 3.4 3.1 110
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Basin Index (%) 96* 134
SWEETWATER
Deer Park 9700 1.3 1.4 93* 1.9 2.2 86
Larsen Creek 9000 .0 .0 * 1.6 -M *
South Pass 9040 1.0 .7 143* 1.8 1.8 100
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Basin Index (%) 110* 92
LOWER N. PLATTE
Casper Mtn. 7900 .1 .4 25* 1.8 2.0 90
Laprele Creek 8375 .1 .2 50* 1.5 1.5 100
Reno Hill 8400 .6 .9 67* 1.7 2.0 85
Windy Peak 7900 .3 .0 * 1.2 1.3 92
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Basin Index (%) 73* 91
LARAMIE RIVER
Brooklyn Lake 10240 .3 .7 43* 2.3 1.8 128
Cinnabar Park 9574 1.5 .8 188* 2.8 2.2 127
Crow Creek 8330 .0 .0 * 1.6 1.5 107
Deadman Hill 10220 1.5 1.5 100* 2.3 1.9 121
Rawah 9020 .3 .1 300* 3.0 1.8 167
Roach 9700 1.2 .5 240* 2.6 1.8 144
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Basin Index (%) 133* 133
S. PLATTE
Black Mountain 8920 .5 -M * 1.5 -M *
Crow Creek 8330 .0 .0 * 1.6 1.5 107
Deadman Hill 10220 1.5 1.5 100* 2.3 1.9 121
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Basin Index (%) 100* 115
LITTLE SNAKE RIVER
Battle Mountain 7440 .1 .0 * 2.6 1.4 186
Divide Peak 8880 .1 .8 12* 3.3 2.4 138
Elk River 8700 .1 .0 * 2.4 1.9 126
Little Snake River 8915 .0 .7 0* 4.8 3.5 137
Old Battle 10000 2.1 1.8 117* 4.6 3.1 148
Sage Creek Basin 7850 .1 .0 * 2.5 1.8 139
Sandstone RS 8150 .0 .0 * 2.6 1.6 162
Whiskey Park 8950 .8 .4 200* 3.8 2.1 181
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Basin Index (%) 89* 149
UPPER GREEN RIVER
Big Sandy Opening 9080 .5 .8 62* 1.8 1.4 129
Blind Bull Sum 8650 .0 .8 0* 2.0 1.5 133
East Rim Divide 7930 .0 .0 * 1.5 1.0 150
Elkhart Park G.S. 9400 1.2 .6 200* 2.5 1.4 179
Gros Ventre Summit 8750 .3 1.2 25* 1.2 1.3 92
Gunsight Pass 9820 .2 .7 29* 1.9 1.8 106
Kendall R.S. 7740 .2 .0 * 1.6 1.1 145
Loomis Park 8240 .4 .2 200* -M 1.3 *
New Fork Lake 8340 .0 .0 * 1.6 1.0 160
Pocket Creek 9360 1.3 -M * 2.5 -M *
Snyder Basin 8060 .1 .0 * 1.8 1.1 164
Spring Creek Divide 9000 .4 .7 57* 2.1 1.6 131
Triple Peak 8500 .5 .5 100* 2.2 1.7 129
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Basin Index (%) 69* 136
LOWER GREEN RIVER
Blacks Fork Jct 8869 .0 -M * 2.1 -M *
Buck Pasture 9632 .2 -M * 3.3 -M *
EF Blacks Fork GS 9360 .1 -M * 2.3 -M *
Hams Fork 7840 .0 .0 * 1.8 1.1 164
Hewinta 9500 .0 .0 * 2.3 1.6 144
Hickerson Park 9122 .9 .0 * 3.3 1.4 236
Hole-in-Rock 9168 .0 .0 * 2.8 1.5 187
Indian Creek 9425 .1 1.1 9* 1.7 1.6 106
Kelley R.S. 8180 .7 .2 350* 1.8 1.4 129
Spirit Lk 10235 1.5 -M * 4.5 -M *
Steel Creek Park 10158 .7 .9 78* 2.6 1.8 144
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Basin Index (%) 109* 157
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 2.6 -M *
Bug Lake 7987 .1 .0 * 3.7 1.7 218
Burts Miller Ranch 8000 .1 -M * 1.6 -M *
Chalk Creek #1 9171 .2 .7 29* 5.3 2.3 230
Hayden Fork 9130 .0 .0 * 4.0 2.0 200
Kelley R.S. 8180 .7 .2 350* 1.8 1.4 129
Lily Lake 9133 .0 .5 0* 2.7 1.9 142
Monte Cristo 8932 .4 .0 * 3.1 2.1 148
Salt River Summit 7640 .0 .0 * 2.0 1.3 154
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Basin Index (%) 100* 178
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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.
