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: OCTOBER 25 , 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 1.4 .0 * 2.2 1.6 138
Black Bear 8170 3.8 2.2 173* 3.7 3.0 123
Blind Bull Sum 8650 2.9 .8 362* 1.2 1.6 75
Cottonwood Creek 7670 2.8 .3 933* 3.0 2.0 150
East Rim Divide 7930 .3 .0 * .5 1.0 50
Grand Targhee 9260 6.8 4.0 170* 3.4 4.7 72
Granite Creek 6770 .4 .0 * 1.0 1.5 67
Grassy Lake 7265 1.8 .4 450* 4.6 2.6 177
Gros Ventre Summit 8750 .9 1.3 69* .9 1.4 64
Gunsight Pass 9820 1.2 .8 150* 1.5 1.8 83
Lewis Lake Divide 7850 1.8 .3 600* 3.5 2.5 140
Phillips Bench 8200 2.7 .4 675* 2.6 1.9 137
Salt River Summit 7640 .6 .0 * 1.2 1.3 92
Snake River Station 6920 1.3 .0 * 2.2 2.1 105
Spring Creek Divide 9000 2.2 .7 314* 2.4 1.7 141
Thumb Divide 7980 1.1 .2 550* 1.9 1.8 106
Togwotee Pass 9580 4.0 2.2 182* 2.9 2.1 138
Two Ocean Plateau 9240 -M 2.6 * -M 2.4 *
Willow Creek 8080 2.6 .4 650* 4.4 2.7 163
Younts Peak 8350 1.9 1.1 173* 2.0 1.8 111
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Basin Index (%) 268* 115
MADISON-GALLATIN
Black Bear 8170 3.8 2.2 173* 3.7 3.0 123
Canyon 7870 1.8 .3 600* 2.0 1.5 133
Madison Plateau 7750 2.5 .8 312* 2.6 2.2 118
West Yellowstone 6700 .8 .0 * 1.1 1.5 73
Whiskey Creek 6800 1.7 .2 850* 2.1 1.8 117
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Basin Index (%) 303* 115
YELLOWSTONE
Beartooth Lake 9360 3.4 1.9 179* 3.2 1.8 178
Burnt Mtn 5880 .3 .0 * 2.3 2.8 82
Canyon 7870 1.8 .3 600* 2.0 1.5 133
Cole Creek 7850 2.1 1.8 117 1.9 2.5 76
Evening Star 9200 4.7 1.8 261* 4.7 2.5 188
Fisher Creek 9100 4.4 1.9 232* 4.5 2.7 167
Northeast Entrance 7350 1.2 .0 * 2.3 1.4 164
Parker Peak 9400 4.2 2.0 210* 3.7 2.2 168
Sylvan Lake 8420 3.1 1.2 258* 3.8 2.4 158
Thumb Divide 7980 1.1 .2 550* 1.9 1.8 106
Two Ocean Plateau 9240 -M 2.6 * -M 2.4 *
White Mill 8700 4.4 1.6 275* 3.0 2.2 136
Wolverine 7650 .6 .0 * 2.1 1.5 140
Younts Peak 8350 1.9 1.1 173* 2.0 1.8 111
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Basin Index (%) 241* 138
WIND RIVER
Burroughs Creek 8750 1.0 -M * 2.5 -M *
Castle Creek 8400 .2 -M * .9 -M *
Cold Springs 9630 .8 .3 267* .9 1.5 60
Deer Park 9700 1.1 1.4 79* 1.2 2.4 50
Hobbs Park 10100 1.1 1.4 79* 1.3 1.9 68
Kirwin 9550 3.0 1.2 250 1.7 1.5 113
Little Warm 9370 2.5 .8 312* 1.3 1.5 87
Owl Creek 8975 .4 .4 100* 1.0 1.0 100
South Pass 9040 .9 .8 112* .8 1.8 44
St. Lawrence Alt 8620 .4 .3 133* .6 1.4 43
Togwotee Pass 9580 4.0 2.2 182* 2.9 2.1 138
Townsend Creek 8700 .4 .4 100* .7 1.9 37
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Basin Index (%) 159* 73
BIGHORN BASIN
Bald Mtn. 9380 4.4 2.4 183 3.0 2.2 136
Bear Trap Meadow 8200 1.5 .3 500* 2.6 1.4 186
Bone Springs Div 9350 3.1 2.0 155 2.4 2.2 109
Grave Springs 8550 2.7 .6 450* 3.4 1.8 189
Kirwin 9550 3.0 1.2 250 1.7 1.5 113
Marquette 8760 .6 -M * 1.2 -M *
Middle Powder 7760 2.5 .6 417* 3.1 2.0 155
Owl Creek 8975 .4 .4 100* 1.0 1.0 100
Powder River Pass 9480 2.7 .9 300* 2.8 1.8 156
Shell Creek 9580 3.5 2.4 146 2.1 2.0 105
Timber Creek 7950 .8 .2 400* 1.0 1.6 62
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Basin Index (%) 224* 132
SHOSHONE RIVER
Blackwater 9780 4.7 2.1 224* 3.7 2.2 168
Evening Star 9200 4.7 1.8 261* 4.7 2.5 188
Marquette 8760 .6 -M * 1.2 -M *
Sylvan Lake 8420 3.1 1.2 258* 3.8 2.4 158
Sylvan Road 7120 1.3 .0 * 3.6 1.9 189
Younts Peak 8350 1.9 1.1 173* 2.0 1.8 111
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Basin Index (%) 253* 165
POWDER RIVER
Bear Trap Meadow 8200 1.5 .3 500* 2.6 1.4 186
Cloud Peak Reservoir 9860 2.1 1.4 150* 3.0 2.3 130
Grave Springs 8550 2.7 .6 450* 3.4 1.8 189
Hansen Sawmill 8360 .7 .2 350* 1.6 1.5 107
Middle Powder 7760 2.5 .6 417* 3.1 2.0 155
Powder River Pass 9480 2.7 .9 300* 2.8 1.8 156
Soldier Park 8720 .7 -M * 1.8 -M *
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Basin Index (%) 305* 153
TONGUE RIVER
Big Goose 7990 .7 .7 100* 1.9 2.1 90
Bone Springs Div 9350 3.1 2.0 155 2.4 2.2 109
Burgess Junction 7880 1.8 .8 225* 3.7 2.0 185
Dome Lake 8880 1.5 1.2 125 1.6 2.3 70
Little Goose 8870 1.4 -M * 1.7 -M *
Sucker Creek 8880 2.2 1.1 200* 2.3 2.2 105
Tie Creek 6870 1.2 .0 * 2.1 2.3 91
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Basin Index (%) 181* 107
BELLE FOURCHE
Blind Park 6890 1.7 .0 * 2.1 1.8 117
Cole Canyon 5910 1.1 .0 * 2.7 1.6 169
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Basin Index (%) * 141
CHEYENNE RIVER BASIN
Blind Park 6890 1.7 .0 * 2.1 1.8 117
North Rapid Creek 6130 2.0 .0 * 2.3 1.6 144
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Basin Index (%) * 129
UPPER N. PLATTE
Arapaho Ridge 10960 1.7 2.2 77* 1.9 2.6 73
Blackhall Mtn 9820 3.0 -M * 3.7 -M *
Columbine 9160 2.6 .2 1300* -M 2.1 *
Divide Peak 8880 1.5 .8 188* -M 2.5 *
Joe Wright 10120 1.9 1.6 119* 3.4 2.8 121
Laprele Creek 8375 1.9 .2 950* 2.1 1.5 140
Med Bow 10500 5.0 -M * 4.9 -M *
Never Summer 10280 2.2 1.6 138* 1.4 -M *
North French Creek 10130 4.1 2.2 186* 4.3 2.6 165
Old Battle 10000 3.6 1.9 189* 3.4 3.2 106
Rawah 9020 1.2 .1 1200* 2.1 1.9 111
Sage Creek Basin 7850 .9 .0 * 1.2 1.9 63
Sand Lake 10050 3.3 1.9 174* 3.5 2.5 140
South Brush Creek 8440 1.5 .3 500* 1.8 1.9 95
Tower 10500 5.3 2.4 221* 4.8 3.4 141
Webber Springs 9250 2.3 .7 329* 2.6 2.5 104
Whiskey Park 8950 3.6 .5 720* 4.3 2.2 195
Willow Creek Pass 9540 1.4 .6 233* 1.1 1.6 69
Zirkel 9340 3.0 .4 750* -M 3.3 *
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Basin Index (%) 239* 119
SWEETWATER
Deer Park 9700 1.1 1.4 79* 1.2 2.4 50
Larsen Creek 9000 .2 .0 * 1.1 -M *
South Pass 9040 .9 .8 112* .8 1.8 44
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Basin Index (%) 100* 48
LOWER N. PLATTE
Casper Mtn. 7900 3.1 .6 517* 2.6 2.2 118
Laprele Creek 8375 1.9 .2 950* 2.1 1.5 140
Reno Hill 8400 2.7 1.0 270* 3.3 2.1 157
Windy Peak 7900 1.3 .0 * .8 1.3 62
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Basin Index (%) 500* 124
LARAMIE RIVER
Brooklyn Lake 10240 2.4 .8 300* 2.9 1.9 153
Cinnabar Park 9574 2.8 .9 311* 3.8 2.3 165
Crow Creek 8330 .8 .0 * 1.3 1.6 81
Deadman Hill 10220 2.5 1.6 156* 2.5 2.0 125
Rawah 9020 1.2 .1 1200* 2.1 1.9 111
Roach 9700 1.9 .6 317* 1.5 1.9 79
Windy Peak 7900 1.3 .0 * .8 1.3 62
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Basin Index (%) 322* 116
S. PLATTE
Black Mountain 8920 .7 -M * 1.1 -M *
Crow Creek 8330 .8 .0 * 1.3 1.6 81
Deadman Hill 10220 2.5 1.6 156* 2.5 2.0 125
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Basin Index (%) 206* 106
LITTLE SNAKE RIVER
Battle Mountain 7440 .6 .0 * .9 1.5 60
Divide Peak 8880 1.5 .8 188* -M 2.5 *
Elk River 8700 1.7 .0 * 1.2 2.0 60
Little Snake River 8915 2.4 .7 343* 3.9 3.8 103
Old Battle 10000 3.6 1.9 189* 3.4 3.2 106
Sage Creek Basin 7850 .9 .0 * 1.2 1.9 63
Sandstone RS 8150 1.2 .0 * 1.2 1.7 71
Whiskey Park 8950 3.6 .5 720* 4.3 2.2 195
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Basin Index (%) 397* 99
UPPER GREEN RIVER
Big Sandy Opening 9080 1.1 .9 122* .8 1.5 53
Blind Bull Sum 8650 2.9 .8 362* 1.2 1.6 75
East Rim Divide 7930 .3 .0 * .5 1.0 50
Elkhart Park G.S. 9400 .5 .6 83* .4 1.5 27
Gros Ventre Summit 8750 .9 1.3 69* .9 1.4 64
Gunsight Pass 9820 1.2 .8 150* 1.5 1.8 83
Indian Creek 9425 2.0 1.2 167* 1.5 1.7 88
Kendall R.S. 7740 .6 .0 * .9 1.2 75
Loomis Park 8240 .7 .2 350* 2.2 1.3 169
New Fork Lake 8340 .5 .0 * .7 1.0 70
Pocket Creek 9360 -M -M * 1.1 -M *
Snider Basin 8060 .7 .0 * 1.4 1.1 127
Spring Creek Divide 9000 2.2 .7 314* 2.4 1.7 141
Triple Peak 8500 2.9 .6 483* 2.8 1.8 156
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Basin Index (%) 232* 92
LOWER GREEN RIVER
Blacks Fork Jct 8869 .5 -M * 1.5 -M *
Buck Pasture 9632 1.2 -M * 1.7 -M *
EF Blacks Fork GS 9360 1.2 -M * 1.5 -M *
Hams Fork 7840 .4 .0 * .6 1.1 55
Hewinta 9500 .0 .0 * 1.6 1.7 94
Hickerson Park 9122 .3 .0 * 1.0 1.5 67
Hole-in-Rock 9168 .5 .0 * .9 1.6 56
Indian Creek 9425 2.0 1.2 167* 1.5 1.7 88
Kelley R.S. 8180 1.1 .2 550* 1.6 1.4 114
Spirit Lk 10235 .5 -M * 1.1 -M *
Steel Creek Park 10158 1.6 1.0 160* 1.9 1.8 106
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Basin Index (%) 246* 84
UPPER BEAR RIVER
Bear River RS 8777 .2 -M * 1.0 -M *
Bug Lake 7987 1.0 .0 * 1.5 1.7 88
Burts Miller Ranch 8000 .3 -M * .6 -M *
Chalk Creek #1 9171 1.7 .8 212* 2.9 2.4 121
Hayden Fork 9130 .9 .0 * 2.2 2.0 110
Kelley R.S. 8180 1.1 .2 550* 1.6 1.4 114
Lily Lake 9133 .4 .5 80* 1.1 1.9 58
Monte Cristo 8932 2.1 .0 * 1.9 2.2 86
Salt River Summit 7640 .6 .0 * 1.2 1.3 92
Spring Creek Divide 9000 2.2 .7 314* 2.4 1.7 141
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Basin Index (%) 455* 101
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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.
