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 SATURDAY: NOVEMBER 7 , 2020
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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 1.6 .6 267* 1.8 2.7 67
Blind Bull Sum 8650 .6 2.1 29* 1.2 2.6 46
Cottonwood Creek 7670 .8 1.4 57* 2.0 3.5 57
East Rim Divide 7930 .2 .6 33* 1.7 1.8 94
Grand Targhee 9260 1.7 5.6 30 2.8 6.4 44
Granite Creek 6770 1.2 .7 171* 2.2 2.5 88
Grassy Lake 7265 .8 1.8 44* 2.7 4.6 59
Gros Ventre Summit 8750 .4 2.0 20 1.5 2.2 68
Gunsight Pass 9820 .9 1.5 60 1.2 2.6 46
Lewis Lake Divide 7850 .0 1.9 0* 3.0 4.4 68
Loomis Park 8240 .1 1.1 9* 1.5 2.3 65
Phillips Bench 8200 1.6 1.9 84* 3.0 3.3 91
Salt River Summit 7640 .1 .5 20* 1.0 2.2 45
Snake River Station 6920 .3 .6 50* 2.5 3.3 76
Somsen Ranch 6800 .2 .3 67* .9 2.4 38
Spring Creek Divide 9000 .5 1.9 26* 1.5 3.0 50
Thumb Divide 7980 1.1 1.1 100* 2.2 2.9 76
Togwotee Pass 9580 3.2 3.3 97 4.2 3.7 114
Triple Peak 8500 1.0 1.9 53* 2.1 3.1 68
Two Ocean Plateau 9240 3.4 4.3 79 2.2 4.1 54
Willow Creek 8080 .1 1.8 6* 1.6 4.8 33
Younts Peak 8350 1.4 1.9 74 4.9 2.8 175
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Basin Index (%) 55* 67
MADISON HEADWATERS IN WYOMING
Black Bear 8170 .7 3.8 18 2.6 5.1 51
Canyon 7870 .7 1.2 58* 2.5 2.5 100
Madison Plateau 7750 1.0 1.9 53* 2.3 3.7 62
West Yellowstone 6700 .8 .3 267* 1.8 2.4 75
Whiskey Creek 6800 .9 1.0 90* 2.0 3.0 67
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Basin Index (%) 50* 67
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 6.5 3.6 181 6.8 2.9 234
Canyon 7870 .7 1.2 58* 2.5 2.5 100
Evening Star 9200 6.0 3.2 188 7.3 4.2 174
Fisher Creek 9100 7.9 3.8 208 10.5 4.7 223
Monument Peak 8850 4.7 2.8 168 6.0 3.5 171
Northeast Entrance 7350 .6 .3 200* 5.4 2.2 245
Parker Peak 9400 4.0 3.2 125 4.8 3.2 150
Sylvan Lake 8420 1.4 2.3 61 3.5 3.9 90
Thumb Divide 7980 1.1 1.1 100* 2.2 2.9 76
Two Ocean Plateau 9240 3.4 4.3 79 2.2 4.1 54
White Mill 8700 7.8 2.8 279 8.5 3.7 230
Wolverine 7650 .2 .4 50* 6.1 2.3 265
Younts Peak 8350 1.4 1.9 74 4.9 2.8 175
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Basin Index (%) 148 165
WIND RIVER
Burroughs Creek 8750 .9 -M * 3.9 -M *
Castle Creek 8400 1.3 -M * 2.7 -M *
Cold Springs 9630 .6 1.2 50 1.5 2.3 65
Deer Park 9700 .1 2.0 5 1.0 3.6 28
Grave Springs 8550 -M 1.1 * 1.0 2.6 38
Hobbs Park 10100 .2 2.3 9 .9 2.7 33
Kirwin 9550 2.7 2.0 135 3.9 2.5 156
Little Warm 9370 1.1 1.5 73 2.3 2.4 96
South Pass 9040 .2 1.7 12 1.0 3.0 33
St. Lawrence Alt 8620 .1 1.0 10 .7 2.1 33
Togwotee Pass 9580 3.2 3.3 97 4.2 3.7 114
Townsend Creek 8700 .2 1.2 17 1.0 2.7 37
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Basin Index (%) 52 63
BIGHORN BASIN
Bald Mtn. 9380 4.2 3.7 114 5.7 3.3 173
Bear Trap Meadow 8200 .9 .7 129 2.6 2.1 124
Bone Springs Div 9350 3.6 3.2 112 3.5 3.2 109
Grave Springs 8550 -M 1.1 * 1.0 2.6 38
Kirwin 9550 2.7 2.0 135 3.9 2.5 156
Marquette 8760 1.0 -M * 1.6 -M *
Middle Powder 7760 .2 1.3 15 1.7 2.9 59
Owl Creek 8975 1.0 1.0 100 1.1 1.5 73
Powder River Pass 9480 2.5 1.7 147 2.8 2.6 108
Shell Creek 9580 3.9 3.4 115 2.4 2.9 83
Timber Creek 7950 .3 .8 38 1.0 2.4 42
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Basin Index (%) 108 99
SHOSHONE RIVER
Blackwater 9780 4.4 3.4 129 4.9 3.6 136
Evening Star 9200 6.0 3.2 188 7.3 4.2 174
Marquette 8760 1.0 -M * 1.6 -M *
Sylvan Lake 8420 1.4 2.3 61 3.5 3.9 90
Sylvan Road 7120 .6 .6 100* -M 3.0 *
Younts Peak 8350 1.4 1.9 74 4.9 2.8 175
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Basin Index (%) 121 142
POWDER RIVER
Bear Trap Meadow 8200 .9 .7 129 2.6 2.1 124
Cloud Peak Reservoir 9860 2.3 2.3 100 3.5 3.3 106
Grave Springs 8550 -M 1.1 * 1.0 2.6 38
Hansen Sawmill 8360 1.9 .8 238 2.6 2.1 124
Middle Powder 7760 .2 1.3 15 1.7 2.9 59
Powder River Pass 9480 2.5 1.7 147 2.8 2.6 108
Soldier Park 8720 1.5 -M * 2.9 -M *
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Basin Index (%) 115 91
TONGUE RIVER
Big Goose 7990 1.6 1.2 133 3.6 2.8 129
Bone Springs Div 9350 3.6 3.2 112 3.5 3.2 109
Burgess Junction 7880 2.2 1.6 138 3.6 2.8 129
Dome Lake 8880 2.5 2.3 109 4.6 3.2 144
Little Goose 8870 1.9 -M * 3.9 -M *
Sucker Creek 8880 3.2 1.9 168 5.0 3.2 156
Tie Creek 6870 .0 .3 0* 3.0 3.0 100
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Basin Index (%) 125 128
BELLE FOURCHE
Blind Park 6890 .2 .9 22 2.4 3.1 77
Cole Canyon 5910 .0 .0 * 2.2 2.5 88
North Rapid Creek 6130 .2 .6 33* 2.6 2.8 93
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Basin Index (%) 27* 86
CHEYENNE RIVER BASIN
Blind Park 6890 .2 .9 22 2.4 3.1 77
North Rapid Creek 6130 .2 .6 33* 2.6 2.8 93
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Basin Index (%) 27 85
UPPER N. PLATTE
Arapaho Ridge 10960 1.2 3.3 36 1.5 4.0 38
Blackhall Mtn 9820 1.3 -M * 1.8 -M *
Cinnabar Park 9574 1.1 2.0 55* 1.7 3.7 46
Columbine 9160 .2 1.2 17* 1.4 3.4 41
Divide Peak 8880 .5 2.1 24 1.6 3.9 41
Joe Wright 10120 1.8 3.4 53 -M 4.4 *
Laprele Creek 8375 .2 .9 22* 1.2 2.5 48
Med Bow 10500 2.9 -M * 3.2 -M *
Never Summer 10280 2.1 2.7 78 1.7 -M *
North French Creek 10130 1.5 3.2 47* 2.4 4.2 57
Old Battle 10000 1.2 3.4 35* 1.7 5.2 33
Rawah 9020 1.1 .8 138* 1.9 2.9 66
Sage Creek Basin 7850 .1 .9 11* .5 2.8 18
Sand Lake 10050 2.5 3.5 71 2.8 3.9 72
South Brush Creek 8440 .9 .9 100* 1.8 2.9 62
Tower 10500 1.2 5.3 23 2.3 5.8 40
Webber Springs 9250 1.2 1.7 71* 1.5 4.0 38
Whiskey Park 8950 1.1 1.8 61* 1.6 3.8 42
Willow Creek Pass 9540 1.4 1.7 82 1.5 2.5 60
Zirkel 9340 .1 1.7 6* 1.9 4.8 40
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Basin Index (%) 48* 45
SWEETWATER
Deer Park 9700 .1 2.0 5 1.0 3.6 28
Larsen Creek 9000 .1 .5 20* .7 -M *
South Pass 9040 .2 1.7 12 1.0 3.0 33
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Basin Index (%) 10 30
LOWER N. PLATTE
Casper Mtn. 7900 .0 1.5 0 .7 3.5 20
Laprele Creek 8375 .2 .9 22* 1.2 2.5 48
Reno Hill 8400 .3 1.9 16 1.2 3.3 36
Windy Peak 7900 .5 .7 71* 1.6 2.2 73
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Basin Index (%) 20 41
LARAMIE RIVER
Brooklyn Lake 10240 .7 1.8 39* 2.1 3.0 70
Cinnabar Park 9574 1.1 2.0 55* 1.7 3.7 46
Crow Creek 8330 .1 .7 14* 1.9 2.3 83
Deadman Hill 10220 2.5 2.4 104 2.7 3.0 90
Rawah 9020 1.1 .8 138* 1.9 2.9 66
Roach 9700 1.3 1.8 72 1.5 3.1 48
Windy Peak 7900 .5 .7 71* 1.6 2.2 73
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Basin Index (%) 72* 66
S. PLATTE
Crow Creek 8330 .1 .7 14* 1.9 2.3 83
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Basin Index (%) 14* 83
LITTLE SNAKE RIVER
Battle Mountain 7440 .2 .0 * 1.4 2.6 54
Divide Peak 8880 .5 2.1 24 1.6 3.9 41
Elk River 8700 .3 .5 60* .6 3.1 19
Elkhead Divide 8780 .2 -M * 1.0 -M *
Little Snake River 8915 .1 1.3 8* -M 5.3 *
Old Battle 10000 1.2 3.4 35* 1.7 5.2 33
Sage Creek Basin 7850 .1 .9 11* .5 2.8 18
Sandstone RS 8150 .1 .5 20* 1.2 3.0 40
Whiskey Park 8950 1.1 1.8 61* 1.6 3.8 42
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Basin Index (%) 34* 35
UPPER GREEN RIVER
Big Sandy Opening 9080 .5 2.0 25 .7 2.2 32
Blind Bull Sum 8650 .6 2.1 29* 1.2 2.6 46
East Rim Divide 7930 .2 .6 33* 1.7 1.8 94
Elkhart Park G.S. 9400 .5 1.4 36 .5 2.3 22
Gros Ventre Summit 8750 .4 2.0 20 1.5 2.2 68
Gunsight Pass 9820 .9 1.5 60 1.2 2.6 46
Indian Creek 9425 .2 2.7 7 1.0 3.0 33
Kendall R.S. 7740 .2 .8 25* 1.5 2.1 71
Larsen Creek 9000 .1 .5 20* .7 -M *
Loomis Park 8240 .1 1.1 9* 1.5 2.3 65
New Fork Lake 8340 .2 1.0 20* 1.4 1.9 74
Pocket Creek 9360 -M -M * .6 -M *
Snider Basin 8060 .1 .5 20* 1.2 1.9 63
Spring Creek Divide 9000 .5 1.9 26* 1.5 3.0 50
Triple Peak 8500 1.0 1.9 53* 2.1 3.1 68
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Basin Index (%) 28* 55
LOWER GREEN RIVER
Blacks Fork Jct 8869 .0 -M * 1.0 -M *
Buck Pasture 9632 1.0 -M * 1.4 -M *
EF Blacks Fork GS 9360 .2 -M * 1.1 -M *
Hams Fork 7840 .2 .5 40* .7 1.8 39
Henrys Fork 10182 -M -M * .8 -M *
Hewinta 9500 .4 .4 100* -M 2.6 *
Hickerson Park 9122 .2 .6 33* .7 2.5 28
Hole-in-Rock 9168 .2 .5 40* 1.1 2.4 46
Indian Creek 9425 .2 2.7 7 1.0 3.0 33
Kelley R.S. 8180 .8 1.0 80* .9 2.5 36
Spirit Lk 10235 1.0 -M * .9 -M *
Steel Creek Park 10158 .6 2.0 30 1.5 3.0 50
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Basin Index (%) 34* 39
UPPER BEAR RIVER
Bear River RS 8777 .2 -M * 1.2 -M *
Bug Lake 7987 .0 1.0 0* 1.0 2.7 37
Burts Miller Ranch 8000 .1 -M * 1.3 -M *
Chalk Creek #1 9171 .4 2.2 18* 1.5 3.9 38
Dry Bread Pond 8302 .0 .7 0* .9 2.9 31
Giveout 6930 .0 .1 0* .8 2.0 40
Hayden Fork 9130 .0 .7 0* 1.1 3.3 33
Kelley R.S. 8180 .8 1.0 80* .9 2.5 36
Lily Lake 9133 .3 1.0 30* 1.2 3.0 40
Monte Cristo 8932 .5 1.2 42* 1.0 3.5 29
Salt River Summit 7640 .1 .5 20* 1.0 2.2 45
Spring Creek Divide 9000 .5 1.9 26* 1.5 3.0 50
Trial Lake 9992 .8 1.7 47* .5 3.6 14
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Basin Index (%) 28* 35
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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.
