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 MONDAY: NOVEMBER 5 , 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 .9 .4 225* 3.1 2.4 129
Black Bear 8170 2.6 3.5 74* 5.5 4.6 120
Blind Bull Sum 8650 1.3 1.9 68* 2.7 2.4 112
Cottonwood Creek 7670 1.9 1.2 158* 4.3 3.2 134
East Rim Divide 7930 .3 .5 60* 2.0 1.6 125
Grand Targhee 9260 6.2 5.3 117 7.2 5.9 122
Granite Creek 6770 .6 .5 120* 3.1 2.3 135
Grassy Lake 7265 1.8 1.5 120* 5.1 4.1 124
Gros Ventre Summit 8750 .6 1.9 32 1.5 2.1 71
Gunsight Pass 9820 .9 1.3 69* 3.1 2.4 129
Lewis Lake Divide 7850 1.9 1.6 119* 4.9 3.9 126
Phillips Bench 8200 1.2 1.6 75* 4.4 2.9 152
Salt River Summit 7640 .4 .4 100* 2.7 2.1 129
Snake River Station 6920 1.0 .4 250* 4.5 3.0 150
Spring Creek Divide 9000 2.2 1.5 147* 4.1 2.8 146
Thumb Divide 7980 .5 .8 62* 2.8 2.6 108
Togwotee Pass 9580 3.7 3.1 119 4.5 3.3 136
Two Ocean Plateau 9240 4.6 3.8 121 4.1 3.7 111
Willow Creek 8080 2.0 1.5 133* 5.8 4.4 132
Younts Peak 8350 -M 1.7 * -M 2.6 *
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Basin Index (%) 106* 126
MADISON-GALLATIN
Black Bear 8170 2.6 3.5 74* 5.5 4.6 120
Canyon 7870 -M 1.0 * -M 2.3 *
Madison Plateau 7750 1.4 1.8 78* 3.4 3.4 100
West Yellowstone 6700 .4 .2 200* 2.2 2.2 100
Whiskey Creek 6800 .4 .8 50* 1.6 2.8 57
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Basin Index (%) 76* 98
YELLOWSTONE
Beartooth Lake 9360 3.1 3.3 94 2.6 2.7 96
Burnt Mtn 5880 .1 .0 * 2.8 3.6 78
Canyon 7870 -M 1.0 * -M 2.3 *
Cole Creek 7850 2.5 2.9 86 2.7 3.3 82
Evening Star 9200 4.0 2.9 138 6.0 3.8 158
Fisher Creek 9100 3.8 3.3 115* 6.4 4.2 152
Northeast Entrance 7350 1.1 .1 1100* 3.6 2.1 171
Parker Peak 9400 4.0 3.0 133 5.0 3.0 167
Sylvan Lake 8420 3.1 2.1 148 6.8 3.5 194
Thumb Divide 7980 .5 .8 62* 2.8 2.6 108
Two Ocean Plateau 9240 4.6 3.8 121 4.1 3.7 111
White Mill 8700 2.5 2.6 96 3.1 3.3 94
Wolverine 7650 .4 .2 200* 2.6 2.1 124
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Basin Index (%) 119 128
WIND RIVER
Burroughs Creek 8750 .7 -M * 1.9 -M *
Castle Creek 8400 .0 -M * 1.0 -M *
Cold Springs 9630 .9 1.1 82 1.1 2.1 52
Deer Park 9700 1.1 1.8 61 1.8 3.5 51
Hobbs Park 10100 1.5 2.2 68 1.4 2.6 54
Kirwin 9550 1.0 1.9 53 1.1 2.3 48
Little Warm 9370 -M 1.4 * -M 2.2 *
Owl Creek 8975 .9 .9 100 1.4 1.4 100
South Pass 9040 .7 1.5 47* 1.7 2.8 61
St. Lawrence Alt 8620 .0 1.0 0 1.9 2.0 95
Togwotee Pass 9580 3.7 3.1 119 4.5 3.3 136
Townsend Creek 8700 1.0 1.1 91 2.0 2.6 77
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Basin Index (%) 74 75
BIGHORN BASIN
Bald Mtn. 9380 4.3 3.5 123 2.2 3.1 71
Bear Trap Meadow 8200 1.1 .7 157 1.4 2.0 70
Bone Springs Div 9350 3.1 3.1 100 2.9 3.1 94
Grave Springs 8550 1.3 1.0 130 2.1 2.5 84
Kirwin 9550 1.0 1.9 53 1.1 2.3 48
Marquette 8760 .5 -M * 1.4 -M *
Middle Powder 7760 1.6 1.2 133* 1.2 2.8 43
Owl Creek 8975 .9 .9 100 1.4 1.4 100
Powder River Pass 9480 1.9 1.6 119 1.6 2.4 67
Shell Creek 9580 3.8 3.2 119 3.3 2.7 122
Timber Creek 7950 .0 .8 0 1.4 2.3 61
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Basin Index (%) 106 76
SHOSHONE RIVER
Blackwater 9780 4.3 3.2 134 4.9 3.3 148
Evening Star 9200 4.0 2.9 138 6.0 3.8 158
Marquette 8760 .5 -M * 1.4 -M *
Sylvan Road 7120 .8 .4 200* 2.8 2.7 104
Younts Peak 8350 -M 1.7 * -M 2.6 *
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Basin Index (%) 140* 140
POWDER RIVER
Bear Trap Meadow 8200 1.1 .7 157 1.4 2.0 70
Cloud Peak Reservoir 9860 3.0 2.2 136 2.9 3.0 97
Grave Springs 8550 1.3 1.0 130 2.1 2.5 84
Hansen Sawmill 8360 .3 .7 43 2.0 2.0 100
Middle Powder 7760 1.6 1.2 133* 1.2 2.8 43
Powder River Pass 9480 1.9 1.6 119 1.6 2.4 67
Soldier Park 8720 .3 -M * 2.0 -M *
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Basin Index (%) 124 76
TONGUE RIVER
Big Goose 7990 .8 1.1 73 2.8 2.8 100
Bone Springs Div 9350 3.1 3.1 100 2.9 3.1 94
Burgess Junction 7880 1.2 1.5 80 2.1 2.7 78
Dome Lake 8880 1.9 2.2 86 2.2 3.1 71
Little Goose 8870 1.8 -M * 2.3 -M *
Sucker Creek 8880 2.6 1.8 144 2.3 3.1 74
Tie Creek 6870 -M .3 * -M 3.0 *
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Basin Index (%) 99 83
BELLE FOURCHE
Cole Canyon 5910 .5 .0 * 2.6 2.4 108
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Basin Index (%) * 108
CHEYENNE RIVER BASIN
Blind Park 6890 .9 .8 112 1.8 2.9 62
North Rapid Creek 6130 -M .4 * -M 2.5 *
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Basin Index (%) 112 62
UPPER N. PLATTE
Arapaho Ridge 10960 4.1 3.2 128 5.7 3.8 150
Blackhall Mtn 9820 3.3 -M * 6.6 -M *
Columbine 9160 2.4 1.0 240* 5.2 3.2 162
Divide Peak 8880 1.2 1.9 63* 3.9 3.7 105
Joe Wright 10120 3.8 3.2 119 7.7 4.2 183
Laprele Creek 8375 -M .7 * -M 2.4 *
Med Bow 10500 5.3 -M * 7.1 -M *
North French Creek 10130 4.9 3.0 163* 6.6 3.9 169
Never Summer 10280 4.4 2.6 169 5.7 -M *
Old Battle 10000 4.8 3.1 155* 7.1 4.9 145
Rawah 9020 1.3 .8 162* 4.2 2.9 145
Sage Creek Basin 7850 .7 .8 88* 3.4 2.8 121
Sand Lake 10050 3.8 3.1 123* 3.4 3.7 92
South Brush Creek 8440 1.8 .8 225* 2.9 2.8 104
Tower 10500 6.2 4.8 129* 5.8 5.4 107
Webber Springs 9250 2.2 1.5 147* 5.6 3.8 147
Willow Creek Pass 9540 2.8 1.6 175 4.2 2.4 175
Zirkel 9340 2.9 1.6 181* 6.1 4.5 136
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Basin Index (%) 143* 138
SWEETWATER
Deer Park 9700 1.1 1.8 61 1.8 3.5 51
Larsen Creek 9000 .2 .3 67* 2.1 -M *
South Pass 9040 .7 1.5 47* 1.7 2.8 61
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Basin Index (%) 56* 56
LOWER N. PLATTE
Casper Mtn. 7900 1.2 1.4 86* 1.7 3.2 53
Laprele Creek 8375 -M .7 * -M 2.4 *
Reno Hill 8400 1.3 1.7 76 2.3 3.1 74
Windy Peak 7900 -M .6 * -M 2.1 *
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Basin Index (%) 81* 63
LARAMIE RIVER
Brooklyn Lake 10240 2.2 1.7 129* 3.8 2.8 136
Cinnabar Park 9574 3.9 1.7 229* 5.5 3.5 157
Crow Creek 8330 .2 .8 25 2.2 2.3 96
Deadman Hill 10220 3.1 2.4 129 3.6 2.9 124
Rawah 9020 1.3 .8 162* 4.2 2.9 145
Roach 9700 2.1 1.6 131* 3.7 3.0 123
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Basin Index (%) 142* 132
S. PLATTE
Black Mountain 8920 1.1 -M * 2.4 -M *
Crow Creek 8330 .2 .8 25 2.2 2.3 96
Deadman Hill 10220 3.1 2.4 129 3.6 2.9 124
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Basin Index (%) 103 112
LITTLE SNAKE RIVER
Battle Mountain 7440 .8 .0 * 2.9 2.4 121
Divide Peak 8880 1.2 1.9 63* 3.9 3.7 105
Elk River 8700 1.6 .3 533* 2.7 2.9 93
Little Snake River 8915 2.7 1.2 225* 8.0 5.1 157
Old Battle 10000 4.8 3.1 155* 7.1 4.9 145
Sage Creek Basin 7850 .7 .8 88* 3.4 2.8 121
Sandstone RS 8150 1.5 .3 500* 3.0 2.8 107
Whiskey Park 8950 3.3 1.5 220* 6.9 3.5 197
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Basin Index (%) 182* 135
UPPER GREEN RIVER
Big Sandy Opening 9080 .8 1.8 44 2.3 2.1 110
Blind Bull Sum 8650 1.3 1.9 68* 2.7 2.4 112
East Rim Divide 7930 .3 .5 60* 2.0 1.6 125
Elkhart Park G.S. 9400 1.4 1.2 117* 2.7 2.2 123
Gros Ventre Summit 8750 .6 1.9 32 1.5 2.1 71
Gunsight Pass 9820 .9 1.3 69* 3.1 2.4 129
Kendall R.S. 7740 .4 .6 67* 1.9 1.9 100
Loomis Park 8240 -M .9 * -M 2.1 *
New Fork Lake 8340 .5 .8 62* 1.5 1.7 88
Pocket Creek 9360 2.1 -M * 3.3 -M *
Snyder Basin 8060 .9 .4 225* 3.0 1.8 167
Spring Creek Divide 9000 2.2 1.5 147* 4.1 2.8 146
Triple Peak 8500 2.7 1.7 159* 4.6 2.8 164
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Basin Index (%) 88* 124
LOWER GREEN RIVER
Blacks Fork Jct 8869 .0 -M * 2.4 -M *
Buck Pasture 9632 .9 -M * 4.0 -M *
EF Blacks Fork GS 9360 .6 -M * 2.8 -M *
Hams Fork 7840 .5 .4 125* 2.6 1.7 153
Hewinta 9500 .0 .3 0* 2.7 2.5 108
Hickerson Park 9122 1.6 .5 320* 3.5 2.4 146
Hole-in-Rock 9168 .0 .4 0* 3.0 2.3 130
Indian Creek 9425 1.4 2.5 56 2.7 2.8 96
Kelley R.S. 8180 1.2 .8 150* 2.4 2.3 104
Spirit Lk 10235 1.8 -M * 4.8 -M *
Steel Creek Park 10158 1.3 1.8 72 3.2 2.8 114
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Basin Index (%) 90* 120
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 3.0 -M *
Bug Lake 7987 .5 .8 62* 4.2 2.6 162
Burts Miller Ranch 8000 .4 -M * 1.7 -M *
Chalk Creek #1 9171 .6 2.0 30* 5.9 3.7 159
Hayden Fork 9130 .2 .6 33* 4.6 3.1 148
Kelley R.S. 8180 1.2 .8 150* 2.4 2.3 104
Lily Lake 9133 .0 .9 0* 3.2 2.9 110
Monte Cristo 8932 .8 1.0 80* 3.8 3.4 112
Salt River Summit 7640 .4 .4 100* 2.7 2.1 129
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Basin Index (%) 57* 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.