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 SUNDAY: NOVEMBER 12 , 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 4.1 1.3 315* 5.4 3.5 154
Black Bear 8170 7.7 5.0 154 6.5 6.2 105
Blind Bull Sum 8650 6.1 2.7 226 3.6 3.2 112
Cottonwood Creek 7670 2.5 2.0 125* 3.6 4.2 86
East Rim Divide 7930 1.5 .9 167* 2.4 2.1 114
Grand Targhee 9260 13.6 6.4 212 7.8 7.4 105
Granite Creek 6770 2.4 1.0 240* 4.6 3.1 148
Grassy Lake 7265 3.7 2.9 128* 5.2 5.7 91
Gros Ventre Summit 8750 4.5 2.4 188 3.9 2.6 150
Gunsight Pass 9820 2.6 2.1 124 3.7 3.0 123
Lewis Lake Divide 7850 4.9 2.8 175* 6.6 5.5 120
Phillips Bench 8200 4.3 2.6 165 5.3 4.2 126
Salt River Summit 7760 1.0 .7 143* 2.1 2.6 81
Snake River Station 6920 2.1 1.1 191* 4.3 4.0 108
Spring Creek Divide 9000 3.6 2.7 133 4.1 3.8 108
Thumb Divide 7980 2.7 1.7 159 4.2 3.4 124
Togwotee Pass 9580 7.6 4.0 190 6.9 4.4 157
Two Ocean Plateau 9240 11.1 5.1 218 6.5 4.9 133
Willow Creek 8380 4.4 2.6 169* 6.6 5.8 114
Younts Peak 8350 4.8 2.5 192 4.2 3.3 127
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Basin Index (%) 181 118
MADISON-GALLATIN
Black Bear 8170 7.7 5.0 154 6.5 6.2 105
Canyon 7870 2.5 1.5 167 3.4 3.1 110
Madison Plateau 7750 4.6 2.5 184 5.1 4.4 116
West Yellowstone 6700 1.8 .8 225* 2.9 2.8 104
Whiskey Creek 6800 .2 1.4 14* 3.1 3.6 86
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Basin Index (%) 150 104
YELLOWSTONE
Beartooth Lake 9360 9.5 4.1 232 7.8 3.4 229
Burnt Mtn 5880 2.3 .0 * 4.4 4.0 110
Canyon 7870 2.5 1.5 167 3.4 3.1 110
Cole Creek 7850 4.4 3.3 133 3.0 3.9 77
Evening Star 9200 9.8 4.0 245 9.3 5.2 179
Fisher Creek 9100 12.0 4.9 245 9.7 5.7 170
Northeast Entrance 7350 2.4 .6 400* 3.9 2.7 144
Parker Peak 9400 9.1 3.8 239 6.5 3.8 171
Sylvan Lake 8420 6.5 2.9 224 6.0 4.6 130
Thumb Divide 7980 2.7 1.7 159 4.2 3.4 124
Two Ocean Plateau 9240 11.1 5.1 218 6.5 4.9 133
White Mill 8700 10.5 3.5 300 6.0 4.5 133
Wolverine 7650 -M .6 * -M 2.7 *
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Basin Index (%) 234 144
WIND RIVER
Burroughs Creek 8750 3.0 -M * 3.1 -M *
Castle Creek 8400 1.6 -M * 2.9 -M *
Cold Springs 9630 1.6 1.5 107 2.4 2.6 92
Deer Park 9700 2.3 2.7 85 2.7 4.2 64
Hobbs Park 10100 4.9 2.8 175 4.0 3.1 129
Kirwin 9550 5.5 2.4 229 4.0 2.8 143
Little Warm 9370 4.9 1.9 258 4.1 2.7 152
Owl Creek 8975 .9 1.2 75 2.5 1.7 147
South Pass 9040 1.6 2.2 73 1.3 3.5 37
St. Lawrence Alt 8620 .8 1.1 73 2.9 2.3 126
Togwotee Pass 9580 7.6 4.0 190 6.9 4.4 157
Townsend Creek 8700 1.3 1.5 87 2.3 2.9 79
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Basin Index (%) 147 110
BIGHORN BASIN
Bald Mtn. 9380 4.9 4.0 122 3.0 3.7 81
Bear Trap Meadow 8200 1.4 .8 175 2.8 2.3 122
Bone Springs Div 9350 3.2 3.6 89 2.8 3.6 78
Grave Springs 8550 1.2 1.3 92 1.7 2.8 61
Kirwin 9550 5.5 2.4 229 4.0 2.8 143
Marquette 8760 1.6 -M * 3.5 -M *
Middle Powder 7760 1.6 1.6 100 1.6 3.2 50
Owl Creek 8975 .9 1.2 75 2.5 1.7 147
Powder River Pass 9480 4.3 1.9 226 3.8 2.9 131
Shell Creek 9580 6.3 3.7 170 3.6 3.2 112
Timber Creek 7950 1.1 1.0 110 1.2 2.5 48
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Basin Index (%) 141 94
SHOSHONE RIVER
Blackwater 9780 10.3 4.1 251 7.4 4.2 176
Evening Star 9200 9.8 4.0 245 9.3 5.2 179
Marquette 8760 1.6 -M * 3.5 -M *
Sylvan Road 7120 2.9 1.1 264* 4.8 3.6 133
Younts Peak 8350 4.8 2.5 192 4.2 3.3 127
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Basin Index (%) 238 158
POWDER RIVER
Bear Trap Meadow 8200 1.4 .8 175 2.8 2.3 122
Cloud Peak Reservoir 9860 2.0 2.7 74 3.1 3.5 89
Grave Springs 8550 1.2 1.3 92 1.7 2.8 61
Hansen Sawmill 8360 1.3 .9 144 2.4 2.4 100
Middle Powder 7760 1.6 1.6 100 1.6 3.2 50
Powder River Pass 9480 4.3 1.9 226 3.8 2.9 131
Soldier Park 8720 .9 -M * 2.6 -M *
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Basin Index (%) 128 90
TONGUE RIVER
Big Goose 7990 .9 1.4 64 1.7 3.0 57
Bone Springs Div 9350 3.2 3.6 89 2.8 3.6 78
Burgess Junction 7880 1.2 1.9 63 1.9 3.1 61
Dome Lake 8880 2.2 2.5 88 2.7 3.6 75
Little Goose 8870 1.1 -M * 2.7 -M *
Sucker Creek 8880 1.2 2.3 52 .6 3.6 17
Tie Creek 6870 .6 .4 150* 1.9 3.2 59
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Basin Index (%) 77 58
BELLE FOURCHE
Cole Canyon 5910 .8 .2 400* 2.0 2.7 74
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Basin Index (%) 400* 74
CHEYENNE RIVER BASIN
Blind Park 6890 .9 1.1 82 2.7 3.4 79
North Rapid Creek 6130 .8 .9 89 1.6 3.0 53
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Basin Index (%) 85 67
UPPER N. PLATTE
Arapaho Ridge 10960 4.1 3.6 114 4.7 4.7 100
Blackhall Mtn 9820 4.9 -M * 5.4 -M *
Columbine 9160 1.8 1.9 95* 4.2 4.3 98
Divide Peak 8880 1.3 2.6 50 4.4 4.5 98
Joe Wright 10120 2.5 3.9 64 7.4 5.3 140
Laprele Creek 8375 .4 1.3 31 1.8 2.8 64
Med Bow 10500 6.3 -M * 5.5 -M *
North French Creek 10130 4.3 4.0 108 5.2 4.9 106
Never Summer 10280 4.5 3.2 141 4.8 -M *
Old Battle 10000 4.4 4.6 96 4.3 6.2 69
Rawah 9020 1.8 1.1 164 4.7 3.4 138
Sage Creek Basin 7850 .7 1.3 54 2.2 3.1 71
Sand Lake 10050 5.0 4.3 116 4.7 4.7 100
South Brush Creek 8440 1.7 1.2 142* 3.1 3.3 94
Tower 10500 4.8 6.7 72 7.4 7.1 104
Webber Springs 9250 2.0 2.5 80 3.7 4.8 77
Willow Creek Pass 9540 4.1 2.0 205 4.2 2.9 145
Zirkel 9340 2.2 2.0 110* 6.1 5.5 111
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Basin Index (%) 99 101
SWEETWATER
Deer Park 9700 2.3 2.7 85 2.7 4.2 64
Larsen Creek 9000 .6 .9 67* 1.9 -M *
South Pass 9040 1.6 2.2 73 1.3 3.5 37
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Basin Index (%) 78 52
LOWER N. PLATTE
Casper Mtn. 7900 .9 1.9 47 1.2 3.8 32
Laprele Creek 8375 .4 1.3 31 1.8 2.8 64
Reno Hill 8400 1.3 2.3 57 2.2 3.6 61
Windy Peak 7900 .6 1.0 60 1.8 2.5 72
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Basin Index (%) 49 55
LARAMIE RIVER
Brooklyn Lake 10240 2.0 2.3 87* 3.7 3.6 103
Cinnabar Park 9574 3.6 2.6 138 5.4 4.0 135
Crow Creek 8330 .6 .5 120* 3.1 2.4 129
Deadman Hill 10220 5.3 2.8 189 5.7 3.5 163
Rawah 9020 1.8 1.1 164 4.7 3.4 138
Roach 9700 3.3 2.2 150 5.0 3.6 139
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Basin Index (%) 144 135
S. PLATTE
Black Mountain 8920 1.9 -M * 3.9 -M *
Crow Creek 8330 .6 .5 120* 3.1 2.4 129
Deadman Hill 10220 5.3 2.8 189 5.7 3.5 163
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Basin Index (%) 179* 149
LITTLE SNAKE RIVER
Battle Mountain 7440 .3 .5 60* 1.2 3.0 40
Divide Peak 8880 1.3 2.6 50 4.4 4.5 98
Elk River 8700 1.2 .8 150* 3.7 3.6 103
Little Snake River 8915 1.6 1.9 84* 10.0 5.8 172
Old Battle 10000 4.4 4.6 96 4.3 6.2 69
Sage Creek Basin 7850 .7 1.3 54 2.2 3.1 71
Sandstone RS 8150 .9 .8 112* 2.2 3.5 63
Whiskey Park 8950 1.8 2.5 72* 4.4 4.5 98
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Basin Index (%) 81* 95
UPPER GREEN RIVER
Big Sandy Opening 9080 1.8 2.6 69 2.5 2.6 96
Blind Bull Sum 8650 6.1 2.7 226 3.6 3.2 112
East Rim Divide 7930 1.5 .9 167* 2.4 2.1 114
Elkhart Park G.S. 9400 2.1 1.9 111 2.4 2.8 86
Gros Ventre Summit 8750 4.5 2.4 188 3.9 2.6 150
Gunsight Pass 9820 2.6 2.1 124 3.7 3.0 123
Kendall R.S. 7740 1.8 1.2 150 2.6 2.5 104
Loomis Park 8240 2.6 1.7 153 3.0 2.9 103
New Fork Lake 8340 1.5 1.3 115 1.3 2.2 59
Pocket Creek 9360 2.7 -M * 2.6 -M *
Snider Basin 8060 .8 1.1 73* 1.8 2.3 78
Spring Creek Divide 9000 3.6 2.7 133 4.1 3.8 108
Triple Peak 8500 3.7 2.4 154 5.3 3.9 136
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Basin Index (%) 142 108
LOWER GREEN RIVER
Blacks Fork Jct 8869 .3 -M * 1.3 -M *
Buck Pasture 9632 .7 -M * 1.8 -M *
EF Blacks Fork GS 9360 .4 -M * .6 -M *
Hams Fork 7840 .1 .8 12* 1.1 2.2 50
Hewinta 9500 .0 .8 0* 1.4 3.1 45
Hickerson Park 9122 .8 .9 89 .8 2.7 30
Hole-in-Rock 9168 .6 .8 75 1.1 2.7 41
Indian Creek 9425 2.5 3.2 78 2.3 3.6 64
Kelley R.S. 8180 1.1 1.4 79* 1.7 3.0 57
Spirit Lk 10235 1.0 -M * 1.2 -M *
Steel Creek Park 10158 2.3 2.6 88 2.0 3.4 59
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Basin Index (%) 70* 50
UPPER BEAR RIVER
Bear River RS 8777 .5 -M * 1.3 -M *
Bug Lake 7987 1.1 1.4 79* 2.4 3.4 71
Burts Miller Ranch 8000 .3 -M * .7 -M *
Chalk Creek #1 9171 .9 2.9 31 1.9 4.7 40
Hayden Fork 9130 .7 1.2 58* 1.8 3.9 46
Kelley R.S. 8180 1.1 1.4 79* 1.7 3.0 57
Lily Lake 9133 .2 1.4 14 1.4 3.6 39
Monte Cristo 8932 2.3 1.9 121* 2.6 4.3 60
Salt River Summit 7760 1.0 .7 143* 2.1 2.6 81
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Basin Index (%) 67* 55
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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.