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: OCTOBER 22 , 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 1.0 .0 * 1.8 1.4 129
Black Bear 8170 3.5 1.8 194* 3.3 2.4 138
Blind Bull Sum 8650 2.7 .6 450* 1.0 1.3 77
Cottonwood Creek 7670 2.3 .0 * 2.5 1.7 147
East Rim Divide 7930 .3 .0 * .5 .9 56
Grand Targhee 9260 6.2 3.6 172* 2.9 4.4 66
Granite Creek 6770 .6 .0 * 1.0 1.3 77
Grassy Lake 7265 1.4 .0 * 4.0 2.2 182
Gros Ventre Summit 8750 .8 1.0 80* .8 1.2 67
Gunsight Pass 9820 1.0 .6 167* 1.2 1.6 75
Lewis Lake Divide 7850 1.4 .0 * 3.1 2.0 155
Phillips Bench 8200 2.4 .0 * 2.3 1.6 144
Salt River Summit 7640 .7 .0 * 1.1 1.1 100
Snake River Station 6920 1.1 .0 * 1.8 1.8 100
Spring Creek Divide 9000 1.9 .6 317* 2.1 1.4 150
Thumb Divide 7980 1.1 .0 * 1.9 1.5 127
Togwotee Pass 9580 3.5 1.9 184* 2.4 1.8 133
Two Ocean Plateau 9240 -M 2.2 * -M 2.0 *
Willow Creek 8080 2.2 .1 2200* 4.0 2.4 167
Younts Peak 8350 1.6 .8 200* 1.4 1.5 93
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Basin Index (%) 325* 117
MADISON-GALLATIN
Black Bear 8170 3.5 1.8 194* 3.3 2.4 138
Canyon 7870 1.8 .2 900* 1.9 1.3 146
Madison Plateau 7750 2.4 .7 343* 2.4 1.8 133
West Yellowstone 6700 .8 .0 * 1.0 1.4 71
Whiskey Creek 6800 1.6 .0 * 1.9 1.6 119
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Basin Index (%) 374* 124
YELLOWSTONE
Beartooth Lake 9360 2.8 1.7 165* 2.3 1.5 153
Burnt Mtn 5880 .0 .0 * 1.8 2.7 67
Canyon 7870 1.8 .2 900* 1.9 1.3 146
Cole Creek 7850 1.7 1.6 106* 1.6 2.3 70
Evening Star 9200 3.8 1.4 271* 3.5 2.2 159
Fisher Creek 9100 3.6 1.6 225* 3.2 2.4 133
Northeast Entrance 7350 .9 .0 * 1.7 1.2 142
Parker Peak 9400 3.5 1.6 219* 3.0 1.9 158
Sylvan Lake 8420 2.8 1.0 280* 3.4 2.1 162
Thumb Divide 7980 1.1 .0 * 1.9 1.5 127
Two Ocean Plateau 9240 -M 2.2 * -M 2.0 *
White Mill 8700 3.6 1.3 277* 2.2 1.9 116
Wolverine 7650 .2 .0 * 1.6 1.3 123
Younts Peak 8350 1.6 .8 200* 1.4 1.5 93
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Basin Index (%) 245* 124
WIND RIVER
Burroughs Creek 8750 .4 -M * 1.9 -M *
Castle Creek 8400 .1 -M * .8 -M *
Cold Springs 9630 .4 .2 200* .5 1.3 38
Deer Park 9700 .8 1.2 67* .7 2.0 35
Hobbs Park 10100 .7 1.1 64* .5 1.6 31
Kirwin 9550 2.5 1.0 250* 1.2 1.4 86
Little Warm 9370 2.1 .6 350* .9 1.3 69
Owl Creek 8975 .1 .4 25* .7 .9 78
South Pass 9040 .6 .4 150* .5 1.5 33
St. Lawrence Alt 8620 .1 .1 100* .3 1.3 23
Togwotee Pass 9580 3.5 1.9 184* 2.4 1.8 133
Townsend Creek 8700 .0 .0 * .2 1.6 12
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Basin Index (%) 157* 54
BIGHORN BASIN
Bald Mtn. 9380 3.4 2.2 155 1.7 2.0 85
Bear Trap Meadow 8200 .9 .2 450* 2.1 1.3 162
Bone Springs Div 9350 2.4 1.7 141 1.8 2.0 90
Grave Springs 8550 1.8 .5 360* 2.5 1.7 147
Kirwin 9550 2.5 1.0 250* 1.2 1.4 86
Marquette 8760 .2 -M * 1.8 -M *
Middle Powder 7760 1.5 .5 300* 2.6 1.8 144
Owl Creek 8975 .1 .4 25* .7 .9 78
Powder River Pass 9480 2.2 .7 314* 2.2 1.6 138
Shell Creek 9580 3.0 2.2 136 1.6 1.7 94
Timber Creek 7950 .5 .2 250* .7 1.5 47
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Basin Index (%) 191* 108
SHOSHONE RIVER
Blackwater 9780 4.2 1.8 233* 3.0 2.0 150
Evening Star 9200 3.8 1.4 271* 3.5 2.2 159
Marquette 8760 .2 -M * 1.8 -M *
Sylvan Lake 8420 2.8 1.0 280* 3.4 2.1 162
Sylvan Road 7120 1.2 .0 * 3.3 1.7 194
Younts Peak 8350 1.6 .8 200* 1.4 1.5 93
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Basin Index (%) 272* 154
POWDER RIVER
Bear Trap Meadow 8200 .9 .2 450* 2.1 1.3 162
Cloud Peak Reservoir 9860 1.5 1.2 125* 2.4 2.1 114
Grave Springs 8550 1.8 .5 360* 2.5 1.7 147
Hansen Sawmill 8360 .4 .0 * 1.4 1.4 100
Middle Powder 7760 1.5 .5 300* 2.6 1.8 144
Powder River Pass 9480 2.2 .7 314* 2.2 1.6 138
Soldier Park 8720 .5 -M * 1.6 -M *
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Basin Index (%) 268* 133
TONGUE RIVER
Big Goose 7990 .4 .6 67* 1.5 2.0 75
Bone Springs Div 9350 2.4 1.7 141 1.8 2.0 90
Burgess Junction 7880 1.3 .7 186* 2.8 1.8 156
Dome Lake 8880 1.2 1.1 109* 1.1 2.0 55
Little Goose 8870 .9 -M * 1.4 -M *
Sucker Creek 8880 1.5 .9 167* 1.5 2.0 75
Tie Creek 6870 .8 .0 * 1.6 2.1 76
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Basin Index (%) 152* 87
BELLE FOURCHE
Blind Park 6890 1.4 .0 * 1.7 1.7 100
Cole Canyon 5910 1.0 .0 * 2.3 1.4 164
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Basin Index (%) * 129
CHEYENNE RIVER BASIN
Blind Park 6890 1.4 .0 * 1.7 1.7 100
North Rapid Creek 6130 2.0 .0 * 2.1 1.5 140
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Basin Index (%) * 119
UPPER N. PLATTE
Arapaho Ridge 10960 1.2 1.8 67* 1.4 2.3 61
Blackhall Mtn 9820 2.4 -M * 3.0 -M *
Columbine 9160 2.5 .0 * 2.6 1.9 137
Divide Peak 8880 1.5 .6 250* -M 2.2 *
Joe Wright 10120 1.1 1.1 100* 2.4 2.4 100
Laprele Creek 8375 1.5 .0 * 1.7 1.3 131
Med Bow 10500 4.2 -M * 4.1 -M *
Never Summer 10280 1.6 1.3 123* 1.1 -M *
North French Creek 10130 3.4 1.6 212* 3.6 2.3 157
Old Battle 10000 3.0 1.5 200* 2.9 2.8 104
Rawah 9020 1.0 .0 * 1.9 1.7 112
Sage Creek Basin 7850 .8 .0 * 1.1 1.6 69
Sand Lake 10050 2.9 1.6 181* 3.1 2.2 141
South Brush Creek 8440 1.4 .0 * 1.7 1.7 100
Tower 10500 4.6 2.0 230* 4.2 2.9 145
Webber Springs 9250 1.9 .5 380* 2.4 2.2 109
Whiskey Park 8950 4.7 .2 2350* 3.8 1.9 200
Willow Creek Pass 9540 .9 .4 225* .8 1.4 57
Zirkel 9340 -M .2 * 3.2 3.0 107
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Basin Index (%) 270* 116
SWEETWATER
Deer Park 9700 .8 1.2 67* .7 2.0 35
Larsen Creek 9000 .2 .0 * .9 -M *
South Pass 9040 .6 .4 150* .5 1.5 33
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Basin Index (%) 100* 34
LOWER N. PLATTE
Casper Mtn. 7900 2.8 .3 933* 2.0 1.9 105
Laprele Creek 8375 1.5 .0 * 1.7 1.3 131
Reno Hill 8400 1.8 .8 225* 2.4 1.8 133
Windy Peak 7900 1.1 .0 * .6 1.2 50
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Basin Index (%) 655* 108
LARAMIE RIVER
Brooklyn Lake 10240 1.9 .5 380* 2.3 1.6 144
Cinnabar Park 9574 2.5 .7 357* 3.4 2.0 170
Crow Creek 8330 .4 .0 * .8 1.4 57
Deadman Hill 10220 2.1 1.2 175* 2.0 1.7 118
Rawah 9020 1.0 .0 * 1.9 1.7 112
Roach 9700 1.3 .4 325* .9 1.7 53
Windy Peak 7900 1.1 .0 * .6 1.2 50
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Basin Index (%) 368* 105
S. PLATTE
Black Mountain 8920 .5 -M * .8 -M *
Crow Creek 8330 .4 .0 * .8 1.4 57
Deadman Hill 10220 2.1 1.2 175* 2.0 1.7 118
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Basin Index (%) 208* 90
LITTLE SNAKE RIVER
Battle Mountain 7440 .8 .0 * .9 1.2 75
Divide Peak 8880 1.5 .6 250* -M 2.2 *
Elk River 8700 1.5 .0 * .8 1.8 44
Little Snake River 8915 2.1 .5 420* 3.5 3.3 106
Old Battle 10000 3.0 1.5 200* 2.9 2.8 104
Sage Creek Basin 7850 .8 .0 * 1.1 1.6 69
Sandstone RS 8150 1.4 .0 * 1.0 1.4 71
Whiskey Park 8950 4.7 .2 2350* 3.8 1.9 200
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Basin Index (%) 564* 100
UPPER GREEN RIVER
Big Sandy Opening 9080 1.1 .7 157* .8 1.2 67
Blind Bull Sum 8650 2.7 .6 450* 1.0 1.3 77
East Rim Divide 7930 .3 .0 * .5 .9 56
Elkhart Park G.S. 9400 .3 .5 60* .4 1.3 31
Gros Ventre Summit 8750 .8 1.0 80* .8 1.2 67
Gunsight Pass 9820 1.0 .6 167* 1.2 1.6 75
Indian Creek 9425 1.9 .9 211* 1.4 1.4 100
Kendall R.S. 7740 .4 .0 * .7 1.0 70
Loomis Park 8240 .6 .0 * -M 1.1 *
New Fork Lake 8340 .3 .0 * .6 .9 67
Pocket Creek 9360 -M -M * 1.1 -M *
Snider Basin 8060 .8 .0 * 1.4 .9 156
Spring Creek Divide 9000 1.9 .6 317* 2.1 1.4 150
Triple Peak 8500 2.6 .4 650* 2.4 1.5 160
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Basin Index (%) 277* 91
LOWER GREEN RIVER
Blacks Fork Jct 8869 .6 -M * 1.3 -M *
Buck Pasture 9632 1.2 -M * 1.3 -M *
EF Blacks Fork GS 9360 1.1 -M * 1.3 -M *
Hams Fork 7840 .6 .0 * .4 .9 44
Hewinta 9500 .7 .0 * 1.5 1.4 107
Hickerson Park 9122 .3 .0 * .7 1.2 58
Hole-in-Rock 9168 .2 .0 * .6 1.4 43
Indian Creek 9425 1.9 .9 211* 1.4 1.4 100
Kelley R.S. 8180 1.2 .0 * 1.6 1.2 133
Spirit Lk 10235 .4 -M * .7 -M *
Steel Creek Park 10158 1.5 .7 214* 1.5 1.7 88
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Basin Index (%) 400* 84
UPPER BEAR RIVER
Bear River RS 8777 .5 -M * .9 -M *
Bug Lake 7987 1.3 .0 * 1.5 1.5 100
Burts Miller Ranch 8000 1.2 -M * .6 -M *
Chalk Creek #1 9171 1.7 .4 425* 1.6 2.1 76
Hayden Fork 9130 .9 .0 * 1.9 1.8 106
Kelley R.S. 8180 1.2 .0 * 1.6 1.2 133
Lily Lake 9133 .8 .0 * 1.0 1.7 59
Monte Cristo 8932 2.2 .0 * 1.7 1.9 89
Salt River Summit 7640 .7 .0 * 1.1 1.1 100
Spring Creek Divide 9000 1.9 .6 317* 2.1 1.4 150
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Basin Index (%) 1070* 98
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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.
