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 THURSDAY: NOVEMBER 8 , 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 1.4 .7 200* 3.6 2.9 124
Black Bear 8170 3.1 4.0 78 5.9 5.3 111
Blind Bull Sum 8650 1.9 2.2 86* 3.0 2.8 107
Cottonwood Creek 7670 2.4 1.5 160* 4.8 3.6 133
East Rim Divide 7930 .3 .7 43* 2.0 1.9 105
Grand Targhee 9260 7.4 5.7 130 8.2 6.6 124
Granite Creek 6770 1.0 .8 125* 3.6 2.7 133
Grassy Lake 7265 2.1 2.0 105* 5.6 4.8 117
Gros Ventre Summit 8750 .7 2.1 33 1.7 2.3 74
Gunsight Pass 9820 .9 1.7 53 3.2 2.7 119
Lewis Lake Divide 7850 2.0 2.1 95* 5.3 4.6 115
Phillips Bench 8200 1.7 2.0 85* 5.2 3.5 149
Salt River Summit 7640 .4 .6 67* 2.8 2.3 122
Snake River Station 6920 1.2 .7 171* 4.9 3.4 144
Spring Creek Divide 9000 2.5 2.1 119* 4.3 3.2 134
Thumb Divide 7980 .6 1.3 46* 3.0 2.9 103
Togwotee Pass 9580 4.5 3.5 129 5.4 3.8 142
Two Ocean Plateau 9240 4.9 4.5 109 4.4 4.3 102
Willow Creek 8080 2.8 1.9 147* 6.9 5.1 135
Younts Peak 8350 -M 2.0 * -M 3.0 *
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Basin Index (%) 104* 122
MADISON-GALLATIN
Black Bear 8170 3.1 4.0 78 5.9 5.3 111
Canyon 7870 1.0 1.2 83* 2.8 2.7 104
Madison Plateau 7750 1.7 2.0 85* 3.8 3.9 97
West Yellowstone 6700 -M .4 * -M 2.4 *
Whiskey Creek 6800 .6 1.1 55* 1.8 3.1 58
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Basin Index (%) 77* 95
YELLOWSTONE
Beartooth Lake 9360 3.7 3.7 100 3.0 3.0 100
Burnt Mtn 5880 .4 .0 * 3.0 3.7 81
Canyon 7870 1.0 1.2 83* 2.8 2.7 104
Cole Creek 7850 2.6 3.1 84 4.5 3.6 125
Evening Star 9200 5.0 3.4 147 7.1 4.5 158
Fisher Creek 9100 4.6 4.0 115 7.4 4.9 151
Northeast Entrance 7350 1.6 .3 533* 4.1 2.4 171
Parker Peak 9400 4.8 3.3 145 5.9 3.4 174
Sylvan Lake 8420 4.0 2.4 167 7.8 4.0 195
Thumb Divide 7980 .6 1.3 46* 3.0 2.9 103
Two Ocean Plateau 9240 4.9 4.5 109 4.4 4.3 102
White Mill 8700 3.4 2.9 117 3.8 3.9 97
Wolverine 7650 .9 .4 225* 3.0 2.4 125
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Basin Index (%) 123 131
WIND RIVER
Burroughs Creek 8750 .8 -M * 1.8 -M *
Castle Creek 8400 .0 -M * .9 -M *
Cold Springs 9630 .9 1.3 69 1.1 2.4 46
Deer Park 9700 1.1 2.1 52 1.6 3.7 43
Hobbs Park 10100 1.4 2.4 58 1.1 2.9 38
Kirwin 9550 .9 2.1 43 .9 2.6 35
Little Warm 9370 .5 1.6 31 1.4 2.5 56
Owl Creek 8975 .8 1.0 80 1.4 1.5 93
South Pass 9040 .6 1.8 33 1.5 3.1 48
St. Lawrence Alt 8620 -M 1.0 * 1.9 2.2 86
Togwotee Pass 9580 4.5 3.5 129 5.4 3.8 142
Townsend Creek 8700 .8 1.3 62 1.9 2.8 68
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Basin Index (%) 67 66
BIGHORN BASIN
Bald Mtn. 9380 4.9 3.8 129 2.4 3.4 71
Bear Trap Meadow 8200 1.6 .7 229 1.9 2.1 90
Bone Springs Div 9350 3.6 3.2 112 3.1 3.3 94
Grave Springs 8550 1.5 1.1 136 2.0 2.6 77
Kirwin 9550 .9 2.1 43 .9 2.6 35
Marquette 8760 .6 -M * 1.5 -M *
Middle Powder 7760 2.3 1.3 177 2.3 3.0 77
Owl Creek 8975 .8 1.0 80 1.4 1.5 93
Powder River Pass 9480 2.4 1.7 141 2.0 2.7 74
Shell Creek 9580 4.4 3.4 129 4.0 3.0 133
Timber Creek 7950 .0 .8 0 1.4 2.4 58
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Basin Index (%) 117 80
SHOSHONE RIVER
Blackwater 9780 5.5 3.6 153 6.1 3.7 165
Evening Star 9200 5.0 3.4 147 7.1 4.5 158
Marquette 8760 .6 -M * 1.5 -M *
Sylvan Road 7120 1.5 .7 214* 3.7 3.1 119
Younts Peak 8350 -M 2.0 * -M 3.0 *
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Basin Index (%) 156* 150
POWDER RIVER
Bear Trap Meadow 8200 1.6 .7 229 1.9 2.1 90
Cloud Peak Reservoir 9860 3.3 2.4 138 3.1 3.3 94
Grave Springs 8550 1.5 1.1 136 2.0 2.6 77
Hansen Sawmill 8360 .2 .8 25 2.0 2.2 91
Middle Powder 7760 2.3 1.3 177 2.3 3.0 77
Powder River Pass 9480 2.4 1.7 141 2.0 2.7 74
Soldier Park 8720 .3 -M * 2.0 -M *
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Basin Index (%) 141 84
TONGUE RIVER
Big Goose 7990 1.0 1.2 83 2.7 2.9 93
Bone Springs Div 9350 3.6 3.2 112 3.1 3.3 94
Burgess Junction 7880 1.4 1.7 82 2.4 2.9 83
Dome Lake 8880 2.1 2.4 88 2.5 3.3 76
Little Goose 8870 2.0 -M * 2.5 -M *
Sucker Creek 8880 2.8 2.0 140 2.7 3.3 82
Tie Creek 6870 .3 .3 100* 2.9 3.1 94
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Basin Index (%) 104 87
BELLE FOURCHE
Cole Canyon 5910 .5 .0 * 2.4 2.6 92
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Basin Index (%) * 92
CHEYENNE RIVER BASIN
Blind Park 6890 .9 1.0 90 1.8 3.2 56
North Rapid Creek 6130 .3 .7 43 1.4 2.9 48
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Basin Index (%) 71 52
UPPER N. PLATTE
Arapaho Ridge 10960 4.5 3.3 136 6.1 4.1 149
Blackhall Mtn 9820 3.6 -M * 7.0 -M *
Columbine 9160 2.8 1.3 215* 5.6 3.6 156
Divide Peak 8880 1.1 2.2 50 4.2 4.0 105
Joe Wright 10120 4.1 3.5 117 8.3 4.5 184
Laprele Creek 8375 1.7 1.0 170 2.7 2.6 104
Med Bow 10500 6.4 -M * 8.2 -M *
North French Creek 10130 6.1 3.3 185 8.0 4.3 186
Never Summer 10280 4.4 2.7 163 5.9 -M *
Old Battle 10000 5.1 3.6 142* 7.4 5.4 137
Rawah 9020 1.7 .8 212* 4.4 3.0 147
Sage Creek Basin 7850 .7 1.0 70* 3.5 2.8 125
Sand Lake 10050 4.3 3.6 119 4.0 4.1 98
South Brush Creek 8440 1.9 .9 211* 3.0 3.0 100
Tower 10500 7.4 5.5 135 7.2 5.9 122
Webber Springs 9250 2.5 1.8 139* -M 4.1 *
Willow Creek Pass 9540 2.9 1.8 161 4.2 2.6 162
Zirkel 9340 3.8 1.7 224* 7.4 4.8 154
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Basin Index (%) 145 139
SWEETWATER
Deer Park 9700 1.1 2.1 52 1.6 3.7 43
Larsen Creek 9000 .0 .6 0* 2.0 -M *
South Pass 9040 .6 1.8 33 1.5 3.1 48
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Basin Index (%) 38 46
LOWER N. PLATTE
Casper Mtn. 7900 1.8 1.6 112 2.2 3.5 63
Laprele Creek 8375 1.7 1.0 170 2.7 2.6 104
Reno Hill 8400 1.6 2.0 80 2.9 3.3 88
Windy Peak 7900 1.0 .7 143* 1.2 2.3 52
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Basin Index (%) 115 77
LARAMIE RIVER
Brooklyn Lake 10240 2.8 1.9 147* 4.8 3.1 155
Cinnabar Park 9574 4.4 2.2 200 6.2 3.7 168
Crow Creek 8330 .2 .7 29* 2.3 2.4 96
Deadman Hill 10220 3.3 2.4 138 3.9 3.1 126
Rawah 9020 1.7 .8 212* 4.4 3.0 147
Roach 9700 2.2 1.9 116 3.9 3.2 122
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Basin Index (%) 147 138
S. PLATTE
Black Mountain 8920 1.0 -M * 2.4 -M *
Crow Creek 8330 .2 .7 29* 2.3 2.4 96
Deadman Hill 10220 3.3 2.4 138 3.9 3.1 126
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Basin Index (%) 113* 113
LITTLE SNAKE RIVER
Battle Mountain 7440 1.1 .1 1100* -M 2.7 *
Divide Peak 8880 1.1 2.2 50 4.2 4.0 105
Elk River 8700 1.9 .5 380* 3.2 3.2 100
Little Snake River 8915 2.8 1.3 215* 8.5 5.3 160
Old Battle 10000 5.1 3.6 142* 7.4 5.4 137
Sage Creek Basin 7850 .7 1.0 70* 3.5 2.8 125
Sandstone RS 8150 1.5 .6 250* 3.2 3.0 107
Whiskey Park 8950 3.7 1.9 195* 7.4 3.9 190
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Basin Index (%) 160* 136
UPPER GREEN RIVER
Big Sandy Opening 9080 .8 2.2 36 2.3 2.3 100
Blind Bull Sum 8650 1.9 2.2 86* 3.0 2.8 107
East Rim Divide 7930 .3 .7 43* 2.0 1.9 105
Elkhart Park G.S. 9400 1.4 1.5 93 2.8 2.4 117
Gros Ventre Summit 8750 .7 2.1 33 1.7 2.3 74
Gunsight Pass 9820 .9 1.7 53 3.2 2.7 119
Kendall R.S. 7740 .5 .9 56* 2.0 2.2 91
Loomis Park 8240 1.6 1.2 133* -M 2.5 *
New Fork Lake 8340 .5 1.0 50* 1.7 2.0 85
Pocket Creek 9360 2.1 -M * 3.3 -M *
Snyder Basin 8060 .9 .6 150* 3.0 2.0 150
Spring Creek Divide 9000 2.5 2.1 119* 4.3 3.2 134
Triple Peak 8500 3.3 2.0 165* 5.3 3.3 161
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Basin Index (%) 84* 115
LOWER GREEN RIVER
Blacks Fork Jct 8869 .0 -M * 2.5 -M *
Buck Pasture 9632 .8 -M * 4.2 -M *
EF Blacks Fork GS 9360 .6 -M * 3.0 -M *
Hams Fork 7840 .4 .6 67* 2.6 1.9 137
Hewinta 9500 .1 .5 20* 2.7 2.7 100
Hickerson Park 9122 .3 .7 43* 3.6 2.5 144
Hole-in-Rock 9168 .0 .6 0* 3.0 2.4 125
Indian Creek 9425 1.5 2.8 54 2.8 3.1 90
Kelley R.S. 8180 -M 1.0 * -M 2.6 *
Spirit Lk 10235 1.8 -M * 4.9 -M *
Steel Creek Park 10158 1.2 2.1 57 3.3 3.0 110
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Basin Index (%) 48* 115
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 3.0 -M *
Bug Lake 7987 .4 1.1 36* 4.2 2.9 145
Burts Miller Ranch 8000 .3 -M * 1.6 -M *
Chalk Creek #1 9171 .6 2.3 26* 6.0 4.0 150
Hayden Fork 9130 .3 .8 38* 4.6 3.4 135
Kelley R.S. 8180 -M 1.0 * -M 2.6 *
Lily Lake 9133 .0 1.0 0* 3.3 3.1 106
Monte Cristo 8932 .7 1.3 54* 3.9 3.7 105
Salt River Summit 7640 .4 .6 67* 2.8 2.3 122
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Basin Index (%) 34* 128
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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.