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 26 , 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 3.0 3.2 94 5.0 5.3 94
Black Bear 8170 5.8 8.0 72 8.5 9.6 89
Blind Bull Sum 8650 4.0 4.4 91 4.5 5.0 90
Cottonwood Creek 7670 4.2 3.5 120 6.3 6.1 103
East Rim Divide 7930 1.8 1.7 106 3.1 3.0 103
Grand Targhee 9260 11.8 9.4 126 10.2 9.4 109
Granite Creek 6770 2.6 2.1 124 5.2 4.7 111
Grassy Lake 7265 4.4 5.8 76 7.8 8.8 89
Gros Ventre Summit 8750 2.1 3.3 64 2.9 3.8 76
Gunsight Pass 9820 2.4 2.9 83 4.8 3.8 126
Lewis Lake Divide 7850 4.5 6.4 70 8.3 8.8 94
Phillips Bench 8200 3.9 4.6 85 7.4 6.5 114
Salt River Summit 7640 -M 1.7 * -M 3.9 *
Snake River Station 6920 2.8 2.7 104 7.0 5.9 119
Spring Creek Divide 9000 4.3 4.5 96 6.0 5.7 105
Thumb Divide 7980 1.7 2.8 61 4.3 4.9 88
Togwotee Pass 9580 6.5 6.2 105 7.6 6.4 119
Two Ocean Plateau 9240 7.4 8.0 92 6.3 7.2 88
Willow Creek 8080 4.7 4.8 98 8.9 8.5 105
Younts Peak 8350 -M 3.8 * -M 4.6 *
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Basin Index (%) 92 101
MADISON-GALLATIN
Black Bear 8170 5.8 8.0 72 8.5 9.6 89
Canyon 7870 2.0 2.7 74 3.8 4.4 86
Madison Plateau 7750 3.1 4.5 69 5.2 6.5 80
West Yellowstone 6700 1.7 1.6 106 3.2 3.8 84
Whiskey Creek 6800 1.4 2.7 52 2.3 5.2 44
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Basin Index (%) 72 78
YELLOWSTONE
Beartooth Lake 9360 5.2 5.6 93 4.3 5.0 86
Burnt Mtn 5880 2.2 1.0 220 5.4 4.9 110
Canyon 7870 2.0 2.7 74 3.8 4.4 86
Cole Creek 7850 6.1 3.6 169 6.4 4.6 139
Evening Star 9200 7.4 6.6 112 9.9 7.5 132
Fisher Creek 9100 6.5 8.0 81 9.9 8.3 119
Northeast Entrance 7350 2.5 1.4 179 5.2 3.7 141
Parker Peak 9400 6.9 5.5 125 8.0 5.2 154
Sylvan Lake 8420 5.8 4.7 123 10.0 6.6 152
Thumb Divide 7980 1.7 2.8 61 4.3 4.9 88
Two Ocean Plateau 9240 7.4 8.0 92 6.3 7.2 88
White Mill 8700 5.1 5.5 93 5.0 6.5 77
Wolverine 7650 2.2 1.6 138 4.5 3.7 122
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Basin Index (%) 107 114
WIND RIVER
Burroughs Creek 8750 2.0 -M * 3.2 -M *
Castle Creek 8400 .8 -M * 2.0 -M *
Cold Springs 9630 2.0 2.1 95 2.3 3.4 68
Deer Park 9700 3.9 3.7 105 4.3 5.1 84
Hobbs Park 10100 3.6 4.2 86 3.1 4.1 76
Kirwin 9550 2.4 3.2 75 2.6 3.6 72
Little Warm 9370 1.7 2.5 68 2.7 3.8 71
Owl Creek 8975 2.2 1.5 147 2.7 2.1 129
South Pass 9040 3.0 3.5 86 3.8 4.8 79
St. Lawrence Alt 8620 1.1 1.9 58 3.2 3.0 107
Togwotee Pass 9580 6.5 6.2 105 7.6 6.4 119
Townsend Creek 8700 2.8 2.3 122 3.8 3.9 97
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Basin Index (%) 94 90
BIGHORN BASIN
Bald Mtn. 9380 6.9 5.4 128 4.3 4.8 90
Bear Trap Meadow 8200 2.8 1.3 215 3.0 2.9 103
Bone Springs Div 9350 5.2 4.8 108 4.4 4.5 98
Grave Springs 8550 2.6 1.6 162 3.2 3.4 94
Kirwin 9550 2.4 3.2 75 2.6 3.6 72
Marquette 8760 3.0 -M * 3.8 -M *
Middle Powder 7760 3.2 2.6 123 2.7 4.1 66
Owl Creek 8975 2.2 1.5 147 2.7 2.1 129
Powder River Pass 9480 3.6 2.6 138 3.2 3.7 86
Shell Creek 9580 5.8 4.7 123 5.3 4.3 123
Timber Creek 7950 1.2 1.5 80 2.8 3.1 90
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Basin Index (%) 123 94
SHOSHONE RIVER
Blackwater 9780 8.1 6.5 125 8.4 5.9 142
Evening Star 9200 7.4 6.6 112 9.9 7.5 132
Marquette 8760 3.0 -M * 3.8 -M *
Sylvan Road 7120 3.1 2.3 135 5.7 5.3 108
Younts Peak 8350 -M 3.8 * -M 4.6 *
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Basin Index (%) 121 128
POWDER RIVER
Bear Trap Meadow 8200 2.8 1.3 215 3.0 2.9 103
Cloud Peak Reservoir 9860 5.0 3.7 135 4.9 4.4 111
Grave Springs 8550 2.6 1.6 162 3.2 3.4 94
Hansen Sawmill 8360 1.6 1.4 114 3.3 2.9 114
Middle Powder 7760 3.2 2.6 123 2.7 4.1 66
Powder River Pass 9480 3.6 2.6 138 3.2 3.7 86
Soldier Park 8720 1.3 -M * 3.1 -M *
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Basin Index (%) 142 95
TONGUE RIVER
Big Goose 7990 2.3 2.1 110 3.8 3.8 100
Bone Springs Div 9350 5.2 4.8 108 4.4 4.5 98
Burgess Junction 7880 2.7 2.8 96 3.5 3.9 90
Dome Lake 8880 2.6 3.3 79 3.5 4.5 78
Little Goose 8870 3.7 -M * 3.5 -M *
Sucker Creek 8880 4.4 3.1 142 4.0 4.4 91
Tie Creek 6870 1.3 .6 217 4.5 3.9 115
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Basin Index (%) 111 95
BELLE FOURCHE
Cole Canyon 5910 .9 .7 129 3.3 3.3 100
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Basin Index (%) 129 100
CHEYENNE RIVER BASIN
Blind Park 6890 1.6 1.6 100 2.3 4.1 56
North Rapid Creek 6130 1.2 1.2 100 2.1 3.5 60
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Basin Index (%) 100 58
UPPER N. PLATTE
Arapaho Ridge 10960 6.9 5.3 130 8.3 6.2 134
Blackhall Mtn 9820 7.5 -M * 10.8 -M *
Columbine 9160 5.3 4.1 129 7.7 6.1 126
Divide Peak 8880 3.9 3.9 100 6.7 6.1 110
Joe Wright 10120 5.6 5.3 106 10.8 7.2 150
Laprele Creek 8375 3.7 2.2 168 4.9 3.7 132
Med Bow 10500 11.5 -M * 12.8 -M *
North French Creek 10130 9.1 5.9 154 11.0 6.8 162
Never Summer 10280 6.1 4.5 136 7.1 -M *
Old Battle 10000 9.1 6.6 138 11.5 8.9 129
Rawah 9020 2.6 2.1 124 5.3 4.4 120
Sage Creek Basin 7850 2.8 2.0 140 5.3 4.1 129
Sand Lake 10050 8.2 6.4 128 7.6 6.5 117
South Brush Creek 8440 3.0 2.3 130 4.0 4.4 91
Tower 10500 11.6 10.3 113 11.5 10.2 113
Webber Springs 9250 5.8 4.1 141 9.1 6.8 134
Willow Creek Pass 9540 4.6 3.3 139 6.1 4.0 152
Zirkel 9340 7.2 3.9 185 11.3 7.4 153
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Basin Index (%) 132 130
SWEETWATER
Deer Park 9700 3.9 3.7 105 4.3 5.1 84
Larsen Creek 9000 1.3 2.1 62 4.1 -M *
South Pass 9040 3.0 3.5 86 3.8 4.8 79
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Basin Index (%) 88 82
LOWER N. PLATTE
Casper Mtn. 7900 3.6 3.1 116 3.7 4.9 76
Laprele Creek 8375 3.7 2.2 168 4.9 3.7 132
Reno Hill 8400 4.1 3.1 132 4.4 4.5 98
Windy Peak 7900 3.3 1.6 206 3.1 3.3 94
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Basin Index (%) 147 98
LARAMIE RIVER
Brooklyn Lake 10240 6.8 4.1 166 8.5 5.1 167
Cinnabar Park 9574 6.9 4.6 150 9.1 5.8 157
Crow Creek 8330 .8 1.4 57 -M 3.3 *
Deadman Hill 10220 5.5 4.2 131 5.8 4.8 121
Rawah 9020 2.6 2.1 124 5.3 4.4 120
Roach 9700 4.1 3.5 117 6.0 5.1 118
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Basin Index (%) 134 138
S. PLATTE
Black Mountain 8920 2.5 -M * 3.8 -M *
Crow Creek 8330 .8 1.4 57 -M 3.3 *
Deadman Hill 10220 5.5 4.2 131 5.8 4.8 121
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Basin Index (%) 112 121*
LITTLE SNAKE RIVER
Battle Mountain 7440 2.4 1.2 200 2.7 4.1 66
Divide Peak 8880 3.9 3.9 100 6.7 6.1 110
Elk River 8700 3.6 2.5 144 4.4 5.1 86
Little Snake River 8915 5.9 3.4 174 12.5 7.5 167
Old Battle 10000 9.1 6.6 138 11.5 8.9 129
Sage Creek Basin 7850 2.8 2.0 140 5.3 4.1 129
Sandstone RS 8150 3.8 1.6 238 5.1 4.8 106
Whiskey Park 8950 6.1 4.2 145 9.8 6.5 151
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Basin Index (%) 148 123
UPPER GREEN RIVER
Big Sandy Opening 9080 -M 3.4 * 5.3 3.7 143
Blind Bull Sum 8650 4.0 4.4 91 4.5 5.0 90
East Rim Divide 7930 1.8 1.7 106 3.1 3.0 103
Elkhart Park G.S. 9400 2.7 2.8 96 4.0 3.8 105
Gros Ventre Summit 8750 2.1 3.3 64 2.9 3.8 76
Gunsight Pass 9820 2.4 2.9 83 4.8 3.8 126
Kendall R.S. 7740 1.8 2.3 78 3.2 3.6 89
Loomis Park 8240 3.3 2.6 127 4.8 4.3 112
New Fork Lake 8340 1.9 2.0 95 2.7 3.1 87
Pocket Creek 9360 4.3 -M * 5.1 -M *
Snyder Basin 8060 2.4 2.3 104 4.3 3.5 123
Spring Creek Divide 9000 4.3 4.5 96 6.0 5.7 105
Triple Peak 8500 5.4 4.6 117 7.4 6.0 123
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Basin Index (%) 96 108
LOWER GREEN RIVER
Blacks Fork Jct 8869 .6 -M * 3.9 -M *
Buck Pasture 9632 2.8 -M * 6.4 -M *
EF Blacks Fork GS 9360 2.1 -M * 3.6 -M *
Hams Fork 7840 1.6 1.9 84 3.4 3.0 113
Hewinta 9500 1.3 1.6 81 4.2 4.1 102
Hickerson Park 9122 1.6 1.3 123 4.1 3.5 117
Hole-in-Rock 9168 .9 1.5 60 3.9 3.3 118
Indian Creek 9425 3.6 5.1 71 3.8 5.3 72
Kelley R.S. 8180 2.5 2.6 96 3.6 4.4 82
Spirit Lk 10235 3.2 -M * 5.7 -M *
Steel Creek Park 10158 3.2 3.5 91 5.2 4.7 111
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Basin Index (%) 84 100
UPPER BEAR RIVER
Bear River RS 8777 1.3 -M * 4.4 -M *
Bug Lake 7987 2.3 3.1 74 6.2 4.9 127
Burts Miller Ranch 8000 2.6 -M * 2.4 -M *
Chalk Creek #1 9171 2.9 4.4 66 8.4 6.8 124
Hayden Fork 9130 2.2 2.7 81 6.5 5.6 116
Kelley R.S. 8180 2.5 2.6 96 3.6 4.4 82
Lily Lake 9133 2.0 2.5 80 5.1 4.9 104
Monte Cristo 8932 3.0 4.4 68 5.8 6.4 91
Salt River Summit 7640 -M 1.7 * -M 3.9 *
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Basin Index (%) 76 108
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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.
