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 FRIDAY: NOVEMBER 24 , 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 2.8 214 7.6 5.0 152
Black Bear 8170 11.8 7.6 155 10.9 9.0 121
Blind Bull Sum 8650 10.3 4.1 251 6.8 4.7 145
Cottonwood Creek 7670 4.1 3.3 124 5.9 5.8 102
East Rim Divide 7930 3.1 1.5 207 3.8 2.9 131
Grand Targhee 9260 17.0 9.2 185 10.4 9.2 113
Granite Creek 6770 -M 1.8 * -M 4.4 *
Grassy Lake 7265 7.0 5.2 135 9.7 8.2 118
Gros Ventre Summit 8750 6.5 3.2 203 5.8 3.5 166
Gunsight Pass 9820 5.2 2.7 193 5.8 3.6 161
Lewis Lake Divide 7850 9.1 5.8 157 11.6 8.3 140
Phillips Bench 8200 7.3 4.2 174 8.2 6.1 134
Salt River Summit 7760 1.9 1.5 127 3.6 3.7 97
Snake River Station 6920 4.3 2.3 187 7.4 5.5 135
Spring Creek Divide 9000 6.6 4.2 157 7.1 5.4 131
Thumb Divide 7980 5.7 2.5 228 6.8 4.7 145
Togwotee Pass 9580 11.1 5.8 191 10.5 6.1 172
Two Ocean Plateau 9240 15.4 7.6 203 10.2 6.9 148
Willow Creek 8380 6.8 4.4 155 9.7 8.0 121
Younts Peak 8350 -M 3.5 * -M 4.4 *
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Basin Index (%) 179 133
MADISON-GALLATIN
Black Bear 8170 11.8 7.6 155 10.9 9.0 121
Canyon 7870 3.6 2.4 150 4.8 4.1 117
Madison Plateau 7750 6.7 4.2 160 7.3 6.1 120
West Yellowstone 6700 2.4 1.5 160 4.4 3.6 122
Whiskey Creek 6800 -M 2.5 * 4.8 4.9 98
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Basin Index (%) 156 116
YELLOWSTONE
Beartooth Lake 9360 11.9 5.4 220 10.2 4.7 217
Burnt Mtn 5880 -M .9 * 5.5 4.8 115
Canyon 7870 3.6 2.4 150 4.8 4.1 117
Cole Creek 7850 4.4 3.5 126 3.5 4.5 78
Evening Star 9200 12.8 6.2 206 13.1 7.1 185
Fisher Creek 9100 15.1 7.5 201 12.9 7.8 165
Northeast Entrance 7350 -M 1.3 * 5.1 3.6 142
Parker Peak 9400 11.6 5.2 223 9.1 4.9 186
Sylvan Lake 8420 8.3 4.4 189 8.5 6.2 137
Thumb Divide 7980 5.7 2.5 228 6.8 4.7 145
Two Ocean Plateau 9240 15.4 7.6 203 10.2 6.9 148
White Mill 8700 12.3 5.1 241 8.1 6.1 133
Wolverine 7650 3.3 1.4 236 6.1 3.5 174
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Basin Index (%) 204 151
WIND RIVER
Burroughs Creek 8750 4.7 -M * 5.7 -M *
Castle Creek 8400 2.3 -M * 3.8 -M *
Cold Springs 9630 2.8 2.0 140 3.6 3.2 112
Deer Park 9700 5.4 3.5 154 6.0 5.0 120
Hobbs Park 10100 7.6 4.0 190 6.2 3.9 159
Kirwin 9550 7.6 3.1 245 6.1 3.5 174
Little Warm 9370 7.1 2.4 296 6.4 3.7 173
Owl Creek 8975 1.2 1.5 80 2.8 2.0 140
South Pass 9040 4.4 3.3 133 3.7 4.6 80
St. Lawrence Alt 8620 1.8 1.8 100 3.7 2.9 128
Togwotee Pass 9580 11.1 5.8 191 10.5 6.1 172
Townsend Creek 8700 2.8 2.1 133 4.2 3.7 114
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Basin Index (%) 176 138
BIGHORN BASIN
Bald Mtn. 9380 6.0 5.1 118 4.0 4.6 87
Bear Trap Meadow 8200 2.1 1.2 175 3.3 2.8 118
Bone Springs Div 9350 4.2 4.6 91 3.9 4.4 89
Grave Springs 8550 1.7 1.5 113 1.9 3.3 58
Kirwin 9550 7.6 3.1 245 6.1 3.5 174
Marquette 8760 2.1 -M * 4.7 -M *
Middle Powder 7760 2.0 2.3 87 2.0 4.0 50
Owl Creek 8975 1.2 1.5 80 2.8 2.0 140
Powder River Pass 9480 5.2 2.4 217 4.7 3.6 131
Shell Creek 9580 7.5 4.4 170 4.6 4.1 112
Timber Creek 7950 1.3 1.4 93 1.1 3.0 37
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Basin Index (%) 141 97
SHOSHONE RIVER
Blackwater 9780 13.5 6.1 221 10.6 5.7 186
Evening Star 9200 12.8 6.2 206 13.1 7.1 185
Marquette 8760 2.1 -M * 4.7 -M *
Sylvan Road 7120 4.1 2.0 205 6.8 5.0 136
Younts Peak 8350 -M 3.5 * -M 4.4 *
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Basin Index (%) 213 171
POWDER RIVER
Bear Trap Meadow 8200 2.1 1.2 175 3.3 2.8 118
Cloud Peak Reservoir 9860 3.5 3.5 100 4.6 4.3 107
Grave Springs 8550 1.7 1.5 113 1.9 3.3 58
Hansen Sawmill 8360 2.3 1.4 164 3.4 2.8 121
Middle Powder 7760 2.0 2.3 87 2.0 4.0 50
Powder River Pass 9480 5.2 2.4 217 4.7 3.6 131
Soldier Park 8720 1.4 -M * 3.4 -M *
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Basin Index (%) 137 96
TONGUE RIVER
Big Goose 7990 1.5 2.0 75 2.3 3.7 62
Bone Springs Div 9350 4.2 4.6 91 3.9 4.4 89
Burgess Junction 7880 1.7 2.7 63 2.6 3.8 68
Dome Lake 8880 2.7 3.2 84 3.1 4.4 70
Little Goose 8870 1.8 -M * 3.5 -M *
Sucker Creek 8880 2.0 3.0 67 1.4 4.3 33
Tie Creek 6870 .3 .6 50 2.5 3.9 64
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Basin Index (%) 77 64
BELLE FOURCHE
Cole Canyon 5910 .2 .6 33 2.1 3.2 66
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Basin Index (%) 33 66
CHEYENNE RIVER BASIN
Blind Park 6890 1.2 1.5 80 3.0 4.0 75
North Rapid Creek 6130 1.2 1.2 100 2.1 3.4 62
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Basin Index (%) 89 69
UPPER N. PLATTE
Arapaho Ridge 10960 5.2 5.1 102 5.7 6.0 95
Blackhall Mtn 9820 6.5 -M * 7.1 -M *
Columbine 9160 3.1 3.8 82 7.3 5.8 126
Divide Peak 8880 2.9 3.8 76 5.8 5.8 100
Joe Wright 10120 4.3 5.1 84 9.3 7.0 133
Laprele Creek 8375 1.4 2.1 67 2.8 3.6 78
Med Bow 10500 9.2 -M * 8.2 -M *
North French Creek 10130 6.6 5.5 120 7.4 6.5 114
Never Summer 10280 5.8 4.4 132 5.8 -M *
Old Battle 10000 6.2 6.4 97 6.3 8.5 74
Rawah 9020 2.7 2.0 135 5.9 4.3 137
Sage Creek Basin 7850 1.6 1.9 84 3.3 3.9 85
Sand Lake 10050 7.9 6.0 132 6.7 6.2 108
South Brush Creek 8440 2.9 2.1 138 4.3 4.2 102
Tower 10500 7.1 9.7 73 9.5 9.7 98
Webber Springs 9250 3.6 4.0 90 5.8 6.5 89
Willow Creek Pass 9540 4.9 3.1 158 5.0 3.9 128
Zirkel 9340 4.2 3.6 117 8.6 7.2 119
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Basin Index (%) 103 105
SWEETWATER
Deer Park 9700 5.4 3.5 154 6.0 5.0 120
Larsen Creek 9000 2.0 1.9 105 3.7 -M *
South Pass 9040 4.4 3.3 133 3.7 4.6 80
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Basin Index (%) 136 101
LOWER N. PLATTE
Casper Mtn. 7900 1.7 3.0 57 2.1 4.7 45
Laprele Creek 8375 1.4 2.1 67 2.8 3.6 78
Reno Hill 8400 2.7 2.9 93 3.7 4.4 84
Windy Peak 7900 1.1 1.5 73 2.8 3.2 88
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Basin Index (%) 73 72
LARAMIE RIVER
Brooklyn Lake 10240 4.2 4.1 102 5.7 5.0 114
Cinnabar Park 9574 5.9 4.2 140 7.7 5.6 138
Crow Creek 8330 .4 1.3 31 4.0 3.2 125
Deadman Hill 10220 6.8 4.0 170 7.0 4.7 149
Rawah 9020 2.7 2.0 135 5.9 4.3 137
Roach 9700 4.5 3.4 132 6.4 4.8 133
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Basin Index (%) 129 133
S. PLATTE
Black Mountain 8920 3.1 -M * 5.2 -M *
Crow Creek 8330 .4 1.3 31 4.0 3.2 125
Deadman Hill 10220 6.8 4.0 170 7.0 4.7 149
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Basin Index (%) 136 139
LITTLE SNAKE RIVER
Battle Mountain 7440 .2 1.0 20* 3.2 4.0 80
Divide Peak 8880 2.9 3.8 76 5.8 5.8 100
Elk River 8700 2.7 2.4 112 5.1 4.9 104
Little Snake River 8915 3.3 3.2 103 6.9 7.3 95
Old Battle 10000 6.2 6.4 97 6.3 8.5 74
Sage Creek Basin 7850 1.6 1.9 84 3.3 3.9 85
Sandstone RS 8150 1.1 1.4 79 2.9 4.6 63
Whiskey Park 8950 3.3 4.0 82 6.1 6.2 98
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Basin Index (%) 88 88
UPPER GREEN RIVER
Big Sandy Opening 9080 3.6 3.2 112 4.2 3.5 120
Blind Bull Sum 8650 10.3 4.1 251 6.8 4.7 145
East Rim Divide 7930 3.1 1.5 207 3.8 2.9 131
Elkhart Park G.S. 9400 3.4 2.7 126 3.6 3.6 100
Gros Ventre Summit 8750 6.5 3.2 203 5.8 3.5 166
Gunsight Pass 9820 5.2 2.7 193 5.8 3.6 161
Kendall R.S. 7740 3.9 2.1 186 4.9 3.4 144
Loomis Park 8240 4.6 2.4 192 5.3 4.0 132
New Fork Lake 8340 2.8 1.9 147 2.4 2.9 83
Pocket Creek 9360 4.2 -M * 4.0 -M *
Snider Basin 8060 2.6 2.1 124 4.2 3.3 127
Spring Creek Divide 9000 6.6 4.2 157 7.1 5.4 131
Triple Peak 8500 7.1 4.3 165 9.2 5.6 164
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Basin Index (%) 174 136
LOWER GREEN RIVER
Blacks Fork Jct 8869 -M -M * -M -M *
Buck Pasture 9632 2.8 -M * 3.4 -M *
EF Blacks Fork GS 9360 2.0 -M * 2.7 -M *
Hams Fork 7840 1.4 1.8 78 2.9 2.9 100
Hewinta 9500 -M 1.5 * -M 4.0 *
Hickerson Park 9122 2.0 1.3 154 1.7 3.4 50
Hole-in-Rock 9168 1.7 1.4 121 2.1 3.2 66
Indian Creek 9425 5.7 4.9 116 4.8 5.0 96
Kelley R.S. 8180 3.1 2.5 124 3.8 4.2 90
Spirit Lk 10235 2.1 -M * 2.3 -M *
Steel Creek Park 10158 3.7 3.4 109 3.7 4.5 82
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Basin Index (%) 115 82
UPPER BEAR RIVER
Bear River RS 8777 1.5 -M * 2.8 -M *
Bug Lake 7987 3.1 2.8 111 5.1 4.6 111
Burts Miller Ranch 8000 1.2 -M * 1.8 -M *
Chalk Creek #1 9171 3.7 4.1 90 4.4 6.4 69
Hayden Fork 9130 2.3 2.4 96 3.7 5.3 70
Kelley R.S. 8180 3.1 2.5 124 3.8 4.2 90
Lily Lake 9133 1.9 2.4 79 2.8 4.7 60
Monte Cristo 8932 5.2 4.0 130 5.4 6.0 90
Salt River Summit 7760 1.9 1.5 127 3.6 3.7 97
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Basin Index (%) 108 83
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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.