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 SATURDAY: NOVEMBER 25 , 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 6.0 3.0 200 7.9 5.1 155
Black Bear 8170 11.8 7.8 151 10.9 9.3 117
Blind Bull Sum 8650 10.6 4.3 247 7.0 4.9 143
Cottonwood Creek 7670 -M 3.4 * -M 5.9 *
East Rim Divide 7930 3.1 1.6 194 4.0 2.9 138
Grand Targhee 9260 17.8 9.3 191 11.0 9.4 117
Granite Creek 6770 -M 2.0 * -M 4.5 *
Grassy Lake 7265 6.9 5.5 125 9.7 8.5 114
Gros Ventre Summit 8750 6.7 3.3 203 6.1 3.7 165
Gunsight Pass 9820 5.5 2.8 196 6.1 3.7 165
Lewis Lake Divide 7850 9.2 6.1 151 11.6 8.6 135
Phillips Bench 8200 7.5 4.4 170 8.6 6.3 137
Salt River Summit 7760 1.7 1.6 106 3.7 3.8 97
Snake River Station 6920 4.1 2.5 164 7.3 5.6 130
Spring Creek Divide 9000 6.8 4.4 155 7.3 5.5 133
Thumb Divide 7980 5.7 2.7 211 6.9 4.8 144
Togwotee Pass 9580 12.1 6.0 202 11.5 6.2 185
Two Ocean Plateau 9240 15.5 7.8 199 10.4 7.0 149
Willow Creek 8380 7.3 4.6 159 10.3 8.3 124
Younts Peak 8350 -M 3.7 * -M 4.5 *
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Basin Index (%) 178 135
MADISON-GALLATIN
Black Bear 8170 11.8 7.8 151 10.9 9.3 117
Canyon 7870 3.6 2.5 144 4.8 4.3 112
Madison Plateau 7750 6.8 4.4 155 7.4 6.3 117
West Yellowstone 6700 2.4 1.6 150 4.4 3.7 119
Whiskey Creek 6800 -M 2.6 * 4.9 5.1 96
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Basin Index (%) 151 113
YELLOWSTONE
Beartooth Lake 9360 12.0 5.5 218 10.2 4.9 208
Burnt Mtn 5880 .9 1.0 90 5.1 4.9 104
Canyon 7870 3.6 2.5 144 4.8 4.3 112
Cole Creek 7850 4.5 3.5 129 3.4 4.6 74
Evening Star 9200 13.1 6.4 205 13.3 7.3 182
Fisher Creek 9100 15.1 7.8 194 13.0 8.0 162
Northeast Entrance 7350 1.8 1.4 129 5.2 3.6 144
Parker Peak 9400 11.7 5.4 217 9.0 5.0 180
Sylvan Lake 8420 8.3 4.5 184 8.6 6.4 134
Thumb Divide 7980 5.7 2.7 211 6.9 4.8 144
Two Ocean Plateau 9240 15.5 7.8 199 10.4 7.0 149
White Mill 8700 12.2 5.3 230 8.1 6.3 129
Wolverine 7650 2.8 1.5 187 6.2 3.6 172
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Basin Index (%) 194 147
WIND RIVER
Burroughs Creek 8750 5.2 -M * 5.9 -M *
Castle Creek 8400 2.6 -M * 3.9 -M *
Cold Springs 9630 3.0 2.0 150 3.5 3.3 106
Deer Park 9700 5.4 3.6 150 5.9 5.1 116
Hobbs Park 10100 7.6 4.1 185 6.0 4.0 150
Kirwin 9550 7.8 3.1 252 6.3 3.6 175
Little Warm 9370 7.3 2.5 292 6.5 3.7 176
Owl Creek 8975 1.3 1.5 87 2.9 2.1 138
South Pass 9040 4.3 3.4 126 3.7 4.7 79
St. Lawrence Alt 8620 1.7 1.8 94 3.8 2.9 131
Togwotee Pass 9580 12.1 6.0 202 11.5 6.2 185
Townsend Creek 8700 2.7 2.2 123 4.0 3.8 105
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Basin Index (%) 176 137
BIGHORN BASIN
Bald Mtn. 9380 6.2 5.2 119 3.9 4.7 83
Bear Trap Meadow 8200 2.1 1.3 162 3.3 2.9 114
Bone Springs Div 9350 4.2 4.7 89 3.8 4.4 86
Grave Springs 8550 1.7 1.6 106 1.8 3.3 55
Kirwin 9550 7.8 3.1 252 6.3 3.6 175
Marquette 8760 2.0 -M * 4.7 -M *
Middle Powder 7760 2.1 2.4 88 1.8 4.0 45
Owl Creek 8975 1.3 1.5 87 2.9 2.1 138
Powder River Pass 9480 5.2 2.5 208 4.6 3.7 124
Shell Creek 9580 7.4 4.6 161 4.5 4.2 107
Timber Creek 7950 1.1 1.5 73 1.1 3.0 37
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Basin Index (%) 138 95
SHOSHONE RIVER
Blackwater 9780 13.5 6.3 214 10.6 5.8 183
Evening Star 9200 13.1 6.4 205 13.3 7.3 182
Marquette 8760 2.0 -M * 4.7 -M *
Sylvan Road 7120 3.9 2.1 186 6.9 5.1 135
Younts Peak 8350 -M 3.7 * -M 4.5 *
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Basin Index (%) 206 169
POWDER RIVER
Bear Trap Meadow 8200 2.1 1.3 162 3.3 2.9 114
Cloud Peak Reservoir 9860 3.4 3.6 94 4.5 4.3 105
Grave Springs 8550 1.7 1.6 106 1.8 3.3 55
Hansen Sawmill 8360 2.2 1.4 157 3.3 2.9 114
Middle Powder 7760 2.1 2.4 88 1.8 4.0 45
Powder River Pass 9480 5.2 2.5 208 4.6 3.7 124
Soldier Park 8720 1.3 -M * 3.3 -M *
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Basin Index (%) 130 91
TONGUE RIVER
Big Goose 7990 1.4 2.1 67 2.1 3.8 55
Bone Springs Div 9350 4.2 4.7 89 3.8 4.4 86
Burgess Junction 7880 1.7 2.7 63 2.3 3.8 61
Dome Lake 8880 2.7 3.3 82 2.9 4.4 66
Little Goose 8870 1.7 -M * 3.5 -M *
Sucker Creek 8880 2.1 3.0 70 -M 4.3 *
Tie Creek 6870 .1 .6 17 2.5 3.9 64
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Basin Index (%) 74 67
BELLE FOURCHE
Cole Canyon 5910 .1 .7 14 2.0 3.2 62
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Basin Index (%) 14 62
CHEYENNE RIVER BASIN
Blind Park 6890 1.2 1.5 80 3.1 4.0 78
North Rapid Creek 6130 1.1 1.2 92 2.1 3.5 60
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Basin Index (%) 85 69
UPPER N. PLATTE
Arapaho Ridge 10960 5.3 5.2 102 5.8 6.1 95
Blackhall Mtn 9820 6.6 -M * 7.1 -M *
Columbine 9160 2.8 4.0 70 7.1 6.0 118
Divide Peak 8880 2.8 3.9 72 5.9 5.9 100
Joe Wright 10120 4.3 5.2 83 9.4 7.1 132
Laprele Creek 8375 1.4 2.2 64 2.7 3.7 73
Med Bow 10500 9.2 -M * 8.2 -M *
North French Creek 10130 6.6 5.7 116 7.4 6.6 112
Never Summer 10280 5.8 4.4 132 5.8 -M *
Old Battle 10000 6.1 6.5 94 6.2 8.7 71
Rawah 9020 2.6 2.1 124 5.9 4.4 134
Sage Creek Basin 7850 1.6 1.9 84 3.2 3.9 82
Sand Lake 10050 7.8 6.2 126 6.8 6.4 106
South Brush Creek 8440 2.9 2.2 132 4.3 4.3 100
Tower 10500 7.2 10.0 72 9.4 9.9 95
Webber Springs 9250 3.6 4.0 90 5.8 6.7 87
Willow Creek Pass 9540 4.9 3.2 153 5.0 3.9 128
Zirkel 9340 4.1 3.7 111 8.5 7.3 116
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Basin Index (%) 99 103
SWEETWATER
Deer Park 9700 5.4 3.6 150 5.9 5.1 116
Larsen Creek 9000 1.9 2.0 95 3.8 -M *
South Pass 9040 4.3 3.4 126 3.7 4.7 79
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Basin Index (%) 129 98
LOWER N. PLATTE
Casper Mtn. 7900 1.7 3.1 55 2.1 4.8 44
Laprele Creek 8375 1.4 2.2 64 2.7 3.7 73
Reno Hill 8400 2.7 3.0 90 3.6 4.4 82
Windy Peak 7900 1.1 1.6 69 2.6 3.2 81
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Basin Index (%) 70 68
LARAMIE RIVER
Brooklyn Lake 10240 4.2 4.1 102 5.6 5.0 112
Cinnabar Park 9574 5.9 4.4 134 7.7 5.7 135
Crow Creek 8330 .1 1.4 7 4.0 3.3 121
Deadman Hill 10220 6.7 4.1 163 7.0 4.7 149
Rawah 9020 2.6 2.1 124 5.9 4.4 134
Roach 9700 4.5 3.5 129 6.4 4.9 131
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Basin Index (%) 122 131
S. PLATTE
Black Mountain 8920 3.1 -M * 5.2 -M *
Crow Creek 8330 .1 1.4 7 4.0 3.3 121
Deadman Hill 10220 6.7 4.1 163 7.0 4.7 149
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Basin Index (%) 124 138
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 1.1 0* 3.0 4.1 73
Divide Peak 8880 2.8 3.9 72 5.9 5.9 100
Elk River 8700 2.8 2.4 117 5.2 4.9 106
Little Snake River 8915 3.3 3.3 100 6.9 7.3 95
Old Battle 10000 6.1 6.5 94 6.2 8.7 71
Sage Creek Basin 7850 1.6 1.9 84 3.2 3.9 82
Sandstone RS 8150 1.0 1.5 67 2.8 4.7 60
Whiskey Park 8950 3.4 4.1 83 6.2 6.3 98
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Basin Index (%) 85 86
UPPER GREEN RIVER
Big Sandy Opening 9080 3.7 3.3 112 4.3 3.6 119
Blind Bull Sum 8650 10.6 4.3 247 7.0 4.9 143
East Rim Divide 7930 3.1 1.6 194 4.0 2.9 138
Elkhart Park G.S. 9400 3.5 2.8 125 3.7 3.7 100
Gros Ventre Summit 8750 6.7 3.3 203 6.1 3.7 165
Gunsight Pass 9820 5.5 2.8 196 6.1 3.7 165
Kendall R.S. 7740 4.0 2.2 182 5.2 3.5 149
Loomis Park 8240 4.9 2.5 196 5.7 4.2 136
New Fork Lake 8340 3.0 1.9 158 2.4 3.0 80
Pocket Creek 9360 4.3 -M * 4.1 -M *
Snider Basin 8060 2.5 2.2 114 4.3 3.4 126
Spring Creek Divide 9000 6.8 4.4 155 7.3 5.5 133
Triple Peak 8500 7.5 4.5 167 9.5 5.8 164
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Basin Index (%) 173 137
LOWER GREEN RIVER
Blacks Fork Jct 8869 1.8 -M * 2.6 -M *
Buck Pasture 9632 2.8 -M * 3.4 -M *
EF Blacks Fork GS 9360 1.9 -M * 2.9 -M *
Hams Fork 7840 1.3 1.8 72 2.9 2.9 100
Hewinta 9500 .7 1.6 44 2.9 4.1 71
Hickerson Park 9122 1.9 1.3 146 1.6 3.4 47
Hole-in-Rock 9168 1.6 1.4 114 2.0 3.3 61
Indian Creek 9425 5.9 5.0 118 4.9 5.1 96
Kelley R.S. 8180 3.1 2.6 119 3.9 4.3 91
Spirit Lk 10235 2.0 -M * 2.3 -M *
Steel Creek Park 10158 3.9 3.4 115 3.7 4.6 80
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Basin Index (%) 108 79
UPPER BEAR RIVER
Bear River RS 8777 1.6 -M * 2.8 -M *
Bug Lake 7987 3.1 3.0 103 5.2 4.8 108
Burts Miller Ranch 8000 .8 -M * 1.8 -M *
Chalk Creek #1 9171 3.6 4.3 84 4.5 6.6 68
Hayden Fork 9130 2.4 2.6 92 3.7 5.4 69
Kelley R.S. 8180 3.1 2.6 119 3.9 4.3 91
Lily Lake 9133 2.0 2.4 83 2.8 4.8 58
Monte Cristo 8932 5.2 4.1 127 5.3 6.3 84
Salt River Summit 7760 1.7 1.6 106 3.7 3.8 97
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Basin Index (%) 102 81
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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.