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: NOVEMBER 7 , 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 1.3 .6 217* 3.5 2.7 130
Black Bear 8170 2.9 3.8 76 5.8 5.1 114
Blind Bull Sum 8650 1.8 2.1 86* 3.0 2.6 115
Cottonwood Creek 7670 2.3 1.4 164* 4.7 3.5 134
East Rim Divide 7930 .4 .6 67* 2.1 1.8 117
Grand Targhee 9260 6.8 5.6 121 7.7 6.4 120
Granite Creek 6770 .9 .7 129* 3.4 2.5 136
Grassy Lake 7265 2.2 1.8 122* 5.6 4.6 122
Gros Ventre Summit 8750 .7 2.0 35 1.6 2.2 73
Gunsight Pass 9820 .9 1.5 60 3.2 2.6 123
Lewis Lake Divide 7850 2.1 1.9 111* 5.3 4.4 120
Phillips Bench 8200 1.6 1.9 84* 4.9 3.3 148
Salt River Summit 7640 .5 .5 100* 2.8 2.2 127
Snake River Station 6920 1.1 .6 183* 4.8 3.3 145
Spring Creek Divide 9000 2.6 1.9 137* 4.4 3.0 147
Thumb Divide 7980 .5 1.1 45* 2.9 2.9 100
Togwotee Pass 9580 4.3 3.3 130 5.2 3.7 141
Two Ocean Plateau 9240 4.8 4.3 112 4.4 4.1 107
Willow Creek 8080 2.8 1.8 156* 6.7 4.8 140
Younts Peak 8350 -M 1.9 * -M 2.8 *
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Basin Index (%) 108* 125
MADISON-GALLATIN
Black Bear 8170 2.9 3.8 76 5.8 5.1 114
Canyon 7870 -M 1.2 * -M 2.5 *
Madison Plateau 7750 1.7 1.9 89* 3.8 3.7 103
West Yellowstone 6700 -M .3 * -M 2.4 *
Whiskey Creek 6800 .5 1.0 50* 1.8 3.0 60
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Basin Index (%) 76* 97
YELLOWSTONE
Beartooth Lake 9360 3.7 3.6 103 3.0 2.9 103
Burnt Mtn 5880 .3 .0 * 2.9 3.7 78
Canyon 7870 -M 1.2 * -M 2.5 *
Cole Creek 7850 2.8 3.0 93 4.4 3.6 122
Evening Star 9200 4.9 3.2 153 7.0 4.2 167
Fisher Creek 9100 4.6 3.8 121 7.2 4.7 153
Northeast Entrance 7350 1.6 .3 533* 4.1 2.2 186
Parker Peak 9400 4.6 3.2 144 5.8 3.2 181
Sylvan Lake 8420 3.8 2.3 165 7.5 3.9 192
Thumb Divide 7980 .5 1.1 45* 2.9 2.9 100
Two Ocean Plateau 9240 4.8 4.3 112 4.4 4.1 107
White Mill 8700 3.4 2.8 121 3.8 3.7 103
Wolverine 7650 .9 .4 225* 3.0 2.3 130
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Basin Index (%) 128 135
WIND RIVER
Burroughs Creek 8750 .8 -M * 1.9 -M *
Castle Creek 8400 .0 -M * .9 -M *
Cold Springs 9630 .8 1.2 67 1.0 2.3 43
Deer Park 9700 1.1 2.0 55 1.6 3.6 44
Hobbs Park 10100 1.4 2.3 61 1.1 2.7 41
Kirwin 9550 .9 2.0 45 1.0 2.5 40
Little Warm 9370 .4 1.5 27 1.4 2.4 58
Owl Creek 8975 .8 1.0 80 1.4 1.5 93
South Pass 9040 .6 1.7 35 1.6 3.0 53
St. Lawrence Alt 8620 -M 1.0 * 1.9 2.1 90
Togwotee Pass 9580 4.3 3.3 130 5.2 3.7 141
Townsend Creek 8700 .8 1.2 67 1.8 2.7 67
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Basin Index (%) 69 68
BIGHORN BASIN
Bald Mtn. 9380 4.9 3.7 132 2.6 3.3 79
Bear Trap Meadow 8200 1.6 .7 229 1.9 2.1 90
Bone Springs Div 9350 3.5 3.2 109 3.2 3.2 100
Grave Springs 8550 1.5 1.1 136 1.9 2.6 73
Kirwin 9550 .9 2.0 45 1.0 2.5 40
Marquette 8760 .5 -M * 1.5 -M *
Middle Powder 7760 2.3 1.3 177 2.3 2.9 79
Owl Creek 8975 .8 1.0 80 1.4 1.5 93
Powder River Pass 9480 2.3 1.7 135 1.9 2.6 73
Shell Creek 9580 4.4 3.4 129 3.9 2.9 134
Timber Creek 7950 .0 .8 0 1.4 2.4 58
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Basin Index (%) 117 83
SHOSHONE RIVER
Blackwater 9780 5.2 3.4 153 5.7 3.6 158
Evening Star 9200 4.9 3.2 153 7.0 4.2 167
Marquette 8760 .5 -M * 1.5 -M *
Sylvan Road 7120 1.5 .6 250* 3.5 3.0 117
Younts Peak 8350 -M 1.9 * -M 2.8 *
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Basin Index (%) 161* 150
POWDER RIVER
Bear Trap Meadow 8200 1.6 .7 229 1.9 2.1 90
Cloud Peak Reservoir 9860 3.3 2.3 143 3.0 3.3 91
Grave Springs 8550 1.5 1.1 136 1.9 2.6 73
Hansen Sawmill 8360 .3 .8 38 2.0 2.1 95
Middle Powder 7760 2.3 1.3 177 2.3 2.9 79
Powder River Pass 9480 2.3 1.7 135 1.9 2.6 73
Soldier Park 8720 .3 -M * 2.0 -M *
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Basin Index (%) 143 83
TONGUE RIVER
Big Goose 7990 1.0 1.2 83 2.8 2.8 100
Bone Springs Div 9350 3.5 3.2 109 3.2 3.2 100
Burgess Junction 7880 1.4 1.6 88 2.3 2.8 82
Dome Lake 8880 2.0 2.3 87 2.5 3.2 78
Little Goose 8870 2.0 -M * 2.5 -M *
Sucker Creek 8880 2.8 1.9 147 2.6 3.2 81
Tie Creek 6870 .3 .3 100* 3.3 3.0 110
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Basin Index (%) 105 92
BELLE FOURCHE
Cole Canyon 5910 .5 .0 * 1.6 2.5 64
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Basin Index (%) * 64
CHEYENNE RIVER BASIN
Blind Park 6890 .8 .9 89 1.2 3.1 39
North Rapid Creek 6130 .2 .6 33* 1.3 2.8 46
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Basin Index (%) 67 42
UPPER N. PLATTE
Arapaho Ridge 10960 4.4 3.3 133 6.1 4.0 152
Blackhall Mtn 9820 3.6 -M * 7.0 -M *
Columbine 9160 2.9 1.2 242* 5.6 3.4 165
Divide Peak 8880 1.1 2.1 52 4.1 3.9 105
Joe Wright 10120 4.1 3.4 121 8.3 4.4 189
Laprele Creek 8375 1.6 .9 178* 2.6 2.5 104
Med Bow 10500 6.3 -M * 8.1 -M *
North French Creek 10130 6.0 3.2 188* 7.8 4.2 186
Never Summer 10280 4.4 2.7 163 5.9 -M *
Old Battle 10000 5.0 3.4 147* 7.3 5.2 140
Rawah 9020 1.7 .8 212* 4.5 2.9 155
Sage Creek Basin 7850 .7 .9 78* 3.4 2.8 121
Sand Lake 10050 4.3 3.5 123 4.1 3.9 105
South Brush Creek 8440 1.9 .9 211* 3.0 2.9 103
Tower 10500 7.3 5.3 138 7.1 5.8 122
Webber Springs 9250 2.4 1.7 141* 5.4 4.0 135
Willow Creek Pass 9540 2.9 1.7 171 4.2 2.5 168
Zirkel 9340 3.9 1.7 229* 7.3 4.8 152
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Basin Index (%) 149* 141
SWEETWATER
Deer Park 9700 1.1 2.0 55 1.6 3.6 44
Larsen Creek 9000 .0 .5 0* 2.1 -M *
South Pass 9040 .6 1.7 35 1.6 3.0 53
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Basin Index (%) 40 48
LOWER N. PLATTE
Casper Mtn. 7900 1.7 1.5 113 2.1 3.5 60
Laprele Creek 8375 1.6 .9 178* 2.6 2.5 104
Reno Hill 8400 1.6 1.9 84 2.8 3.3 85
Windy Peak 7900 1.1 .7 157* 1.3 2.2 59
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Basin Index (%) 120 77
LARAMIE RIVER
Brooklyn Lake 10240 2.8 1.8 156* 4.6 3.0 153
Cinnabar Park 9574 4.4 2.0 220* 6.2 3.7 168
Crow Creek 8330 .2 .7 29* 2.3 2.3 100
Deadman Hill 10220 3.4 2.4 142 3.9 3.0 130
Rawah 9020 1.7 .8 212* 4.5 2.9 155
Roach 9700 2.3 1.8 128 4.0 3.1 129
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Basin Index (%) 156* 142
S. PLATTE
Black Mountain 8920 1.0 -M * 2.3 -M *
Crow Creek 8330 .2 .7 29* 2.3 2.3 100
Deadman Hill 10220 3.4 2.4 142 3.9 3.0 130
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Basin Index (%) 116* 117
LITTLE SNAKE RIVER
Battle Mountain 7440 .9 .0 * 3.2 2.6 123
Divide Peak 8880 1.1 2.1 52 4.1 3.9 105
Elk River 8700 1.9 .5 380* 3.1 3.1 100
Little Snake River 8915 2.9 1.3 223* 8.5 5.3 160
Old Battle 10000 5.0 3.4 147* 7.3 5.2 140
Sage Creek Basin 7850 .7 .9 78* 3.4 2.8 121
Sandstone RS 8150 1.5 .5 300* 3.2 3.0 107
Whiskey Park 8950 3.8 1.8 211* 7.4 3.8 195
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Basin Index (%) 170* 135
UPPER GREEN RIVER
Big Sandy Opening 9080 .8 2.0 40 2.3 2.2 105
Blind Bull Sum 8650 1.8 2.1 86* 3.0 2.6 115
East Rim Divide 7930 .4 .6 67* 2.1 1.8 117
Elkhart Park G.S. 9400 1.4 1.4 100 2.7 2.3 117
Gros Ventre Summit 8750 .7 2.0 35 1.6 2.2 73
Gunsight Pass 9820 .9 1.5 60 3.2 2.6 123
Kendall R.S. 7740 .5 .8 62* 2.0 2.1 95
Loomis Park 8240 1.6 1.1 145* -M 2.3 *
New Fork Lake 8340 .5 1.0 50* 1.6 1.9 84
Pocket Creek 9360 2.0 -M * 3.3 -M *
Snyder Basin 8060 1.1 .5 220* 3.2 1.9 168
Spring Creek Divide 9000 2.6 1.9 137* 4.4 3.0 147
Triple Peak 8500 3.2 1.9 168* 5.2 3.1 168
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Basin Index (%) 92* 122
LOWER GREEN RIVER
Blacks Fork Jct 8869 .0 -M * 2.4 -M *
Buck Pasture 9632 .8 -M * 4.2 -M *
EF Blacks Fork GS 9360 .5 -M * 2.9 -M *
Hams Fork 7840 .5 .5 100* 2.6 1.8 144
Hewinta 9500 .2 .4 50* 2.7 2.6 104
Hickerson Park 9122 .5 .6 83* 3.4 2.5 136
Hole-in-Rock 9168 .0 .5 0* 2.9 2.4 121
Indian Creek 9425 1.5 2.7 56 2.8 3.0 93
Kelley R.S. 8180 -M 1.0 * -M 2.5 *
Spirit Lk 10235 1.7 -M * 4.7 -M *
Steel Creek Park 10158 1.2 2.0 60 3.3 3.0 110
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Basin Index (%) 58* 116
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 3.0 -M *
Bug Lake 7987 .2 1.0 20* 4.2 2.7 156
Burts Miller Ranch 8000 .3 -M * 1.6 -M *
Chalk Creek #1 9171 .7 2.2 32* 6.0 3.9 154
Hayden Fork 9130 .3 .7 43* 4.6 3.3 139
Kelley R.S. 8180 -M 1.0 * -M 2.5 *
Lily Lake 9133 .0 1.0 0* 3.3 3.0 110
Monte Cristo 8932 .8 1.2 67* 3.9 3.5 111
Salt River Summit 7640 .5 .5 100* 2.8 2.2 127
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Basin Index (%) 38* 133
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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.