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 27 , 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 5.8 3.3 176 7.9 5.5 144
Black Bear 8170 11.7 8.2 143 11.0 9.8 112
Blind Bull Sum 8650 10.9 4.5 242 7.0 5.2 135
Cottonwood Creek 7670 -M 3.6 * -M 6.3 *
East Rim Divide 7930 3.0 1.7 176 4.0 3.1 129
Grand Targhee 9260 -M 9.5 * -M 9.4 *
Granite Creek 6770 -M 2.2 * -M 4.9 *
Grassy Lake 7265 6.8 6.0 113 9.8 9.0 109
Gros Ventre Summit 8750 6.7 3.4 197 6.0 3.9 154
Gunsight Pass 9820 -M 3.0 * -M 3.9 *
Lewis Lake Divide 7850 9.3 6.6 141 11.8 9.0 131
Phillips Bench 8200 -M 4.8 * -M 6.8 *
Salt River Summit 7760 -M 1.8 * -M 4.0 *
Snake River Station 6920 3.9 2.9 134 7.3 6.1 120
Spring Creek Divide 9000 6.7 4.7 143 7.3 5.9 124
Thumb Divide 7980 5.8 2.9 200 6.9 5.0 138
Togwotee Pass 9580 12.2 6.4 191 11.5 6.6 174
Two Ocean Plateau 9240 15.6 8.2 190 10.4 7.5 139
Willow Creek 8380 7.3 5.0 146 10.3 8.8 117
Younts Peak 8350 -M 4.0 * -M 4.7 *
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Basin Index (%) 166 130
MADISON-GALLATIN
Black Bear 8170 11.7 8.2 143 11.0 9.8 112
Canyon 7870 3.5 2.8 125 4.9 4.5 109
Madison Plateau 7750 6.8 4.7 145 7.4 6.7 110
West Yellowstone 6700 2.4 1.6 150 4.4 3.9 113
Whiskey Creek 6800 2.9 2.8 104 4.9 5.4 91
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Basin Index (%) 136 108
YELLOWSTONE
Beartooth Lake 9360 11.9 5.7 209 10.3 5.1 202
Burnt Mtn 5880 .0 1.1 0 5.5 4.9 112
Canyon 7870 3.5 2.8 125 4.9 4.5 109
Cole Creek 7850 4.4 3.7 119 3.6 4.8 75
Evening Star 9200 13.0 6.7 194 13.4 7.7 174
Fisher Creek 9100 15.2 8.2 185 12.9 8.4 154
Northeast Entrance 7350 1.8 1.5 120 5.3 3.9 136
Parker Peak 9400 11.8 5.7 207 9.1 5.3 172
Sylvan Lake 8420 8.2 4.8 171 8.6 6.7 128
Thumb Divide 7980 5.8 2.9 200 6.9 5.0 138
Two Ocean Plateau 9240 15.6 8.2 190 10.4 7.5 139
White Mill 8700 12.2 5.6 218 8.2 6.6 124
Wolverine 7650 2.7 1.7 159 6.3 3.8 166
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Basin Index (%) 181 142
WIND RIVER
Burroughs Creek 8750 5.2 -M * 6.2 -M *
Castle Creek 8400 2.6 -M * 4.0 -M *
Cold Springs 9630 3.2 2.2 145 3.7 3.5 106
Deer Park 9700 5.4 3.8 142 6.0 5.2 115
Hobbs Park 10100 7.8 4.3 181 6.3 4.2 150
Kirwin 9550 8.0 3.3 242 6.5 3.7 176
Little Warm 9370 7.3 2.6 281 6.7 3.9 172
Owl Creek 8975 1.4 1.5 93 3.1 2.1 148
South Pass 9040 4.3 3.6 119 3.7 5.0 74
St. Lawrence Alt 8620 1.9 1.9 100 3.8 3.1 123
Togwotee Pass 9580 12.2 6.4 191 11.5 6.6 174
Townsend Creek 8700 2.8 2.3 122 4.3 4.0 108
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Basin Index (%) 170 135
BIGHORN BASIN
Bald Mtn. 9380 6.2 5.5 113 4.1 4.9 84
Bear Trap Meadow 8200 2.2 1.3 169 3.3 3.0 110
Bone Springs Div 9350 4.3 4.8 90 3.9 4.6 85
Grave Springs 8550 1.7 1.6 106 1.9 3.5 54
Kirwin 9550 8.0 3.3 242 6.5 3.7 176
Marquette 8760 2.1 -M * 4.5 -M *
Middle Powder 7760 1.9 2.7 70 2.0 4.2 48
Owl Creek 8975 1.4 1.5 93 3.1 2.1 148
Powder River Pass 9480 5.2 2.7 193 4.7 3.9 121
Shell Creek 9580 7.6 4.8 158 4.6 4.4 105
Timber Creek 7950 1.1 1.6 69 1.0 3.1 32
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Basin Index (%) 133 94
SHOSHONE RIVER
Blackwater 9780 13.3 6.7 199 10.8 6.1 177
Evening Star 9200 13.0 6.7 194 13.4 7.7 174
Marquette 8760 2.1 -M * 4.5 -M *
Sylvan Road 7120 3.7 2.4 154 6.9 5.5 125
Younts Peak 8350 -M 4.0 * -M 4.7 *
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Basin Index (%) 190 161
POWDER RIVER
Bear Trap Meadow 8200 2.2 1.3 169 3.3 3.0 110
Cloud Peak Reservoir 9860 3.5 3.7 95 4.7 4.5 104
Grave Springs 8550 1.7 1.6 106 1.9 3.5 54
Hansen Sawmill 8360 2.4 1.5 160 3.4 2.9 117
Middle Powder 7760 1.9 2.7 70 2.0 4.2 48
Powder River Pass 9480 5.2 2.7 193 4.7 3.9 121
Soldier Park 8720 1.3 -M * 3.5 -M *
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Basin Index (%) 125 91
TONGUE RIVER
Big Goose 7990 1.5 2.1 71 2.3 3.9 59
Bone Springs Div 9350 4.3 4.8 90 3.9 4.6 85
Burgess Junction 7880 1.8 2.8 64 2.6 4.0 65
Dome Lake 8880 2.8 3.4 82 3.2 4.7 68
Little Goose 8870 1.6 -M * 3.5 -M *
Sucker Creek 8880 2.1 3.2 66 1.5 4.4 34
Tie Creek 6870 .2 .7 29 2.6 4.0 65
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Basin Index (%) 75 63
BELLE FOURCHE
Cole Canyon 5910 .2 .7 29 2.2 3.3 67
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Basin Index (%) 29 67
CHEYENNE RIVER BASIN
Blind Park 6890 1.4 1.6 88 3.2 4.2 76
North Rapid Creek 6130 1.4 1.3 108 2.3 3.6 64
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Basin Index (%) 97 71
UPPER N. PLATTE
Arapaho Ridge 10960 5.3 5.4 98 5.8 6.2 94
Blackhall Mtn 9820 -M -M * -M -M *
Columbine 9160 2.5 4.2 60 7.1 6.3 113
Divide Peak 8880 2.8 4.0 70 5.9 6.2 95
Joe Wright 10120 4.3 5.4 80 9.4 7.5 125
Laprele Creek 8375 1.4 2.2 64 2.8 3.8 74
Med Bow 10500 9.2 -M * 8.3 -M *
North French Creek 10130 6.6 6.2 106 7.4 7.1 104
Never Summer 10280 5.8 4.6 126 5.8 -M *
Old Battle 10000 6.1 6.8 90 6.4 9.2 70
Rawah 9020 2.6 2.2 118 6.0 4.4 136
Sage Creek Basin 7850 1.7 2.0 85 3.3 4.2 79
Sand Lake 10050 7.9 6.6 120 6.8 6.7 101
South Brush Creek 8440 2.8 2.4 117 4.4 4.5 98
Tower 10500 7.2 10.6 68 9.5 10.5 90
Webber Springs 9250 3.6 4.3 84 5.8 7.0 83
Willow Creek Pass 9540 4.9 3.3 148 5.1 4.1 124
Zirkel 9340 4.1 4.1 100 8.6 7.5 115
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Basin Index (%) 94 99
SWEETWATER
Deer Park 9700 5.4 3.8 142 6.0 5.2 115
Larsen Creek 9000 2.0 2.2 91 3.8 -M *
South Pass 9040 4.3 3.6 119 3.7 5.0 74
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Basin Index (%) 122 95
LOWER N. PLATTE
Casper Mtn. 7900 1.6 3.2 50 2.2 5.0 44
Laprele Creek 8375 1.4 2.2 64 2.8 3.8 74
Reno Hill 8400 2.8 3.2 88 3.8 4.6 83
Windy Peak 7900 .9 1.6 56 2.9 3.4 85
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Basin Index (%) 66 70
LARAMIE RIVER
Brooklyn Lake 10240 4.3 4.1 105 5.8 5.3 109
Cinnabar Park 9574 6.0 4.7 128 7.6 6.0 127
Crow Creek 8330 .2 1.5 13 4.2 3.4 124
Deadman Hill 10220 6.8 4.4 155 7.0 5.0 140
Rawah 9020 2.6 2.2 118 6.0 4.4 136
Roach 9700 4.5 3.6 125 6.5 5.2 125
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Basin Index (%) 119 127
S. PLATTE
Black Mountain 8920 3.1 -M * 5.2 -M *
Crow Creek 8330 .2 1.5 13 4.2 3.4 124
Deadman Hill 10220 6.8 4.4 155 7.0 5.0 140
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Basin Index (%) 119 133
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 1.2 0 3.5 4.2 83
Divide Peak 8880 2.8 4.0 70 5.9 6.2 95
Elk River 8700 2.8 2.6 108 5.2 5.2 100
Little Snake River 8915 3.3 3.5 94 6.9 7.8 88
Old Battle 10000 6.1 6.8 90 6.4 9.2 70
Sage Creek Basin 7850 1.7 2.0 85 3.3 4.2 79
Sandstone RS 8150 .9 1.7 53 2.9 5.0 58
Whiskey Park 8950 3.4 4.3 79 6.2 6.7 93
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Basin Index (%) 80 83
UPPER GREEN RIVER
Big Sandy Opening 9080 3.7 3.4 109 4.3 3.8 113
Blind Bull Sum 8650 10.9 4.5 242 7.0 5.2 135
East Rim Divide 7930 3.0 1.7 176 4.0 3.1 129
Elkhart Park G.S. 9400 3.6 2.9 124 3.8 3.9 97
Gros Ventre Summit 8750 6.7 3.4 197 6.0 3.9 154
Gunsight Pass 9820 -M 3.0 * -M 3.9 *
Kendall R.S. 7740 4.0 2.3 174 5.2 3.7 141
Loomis Park 8240 -M 2.8 * -M 4.4 *
New Fork Lake 8340 3.0 2.0 150 2.4 3.1 77
Pocket Creek 9360 4.3 -M * 4.1 -M *
Snider Basin 8060 2.5 2.4 104 4.5 3.6 125
Spring Creek Divide 9000 6.7 4.7 143 7.3 5.9 124
Triple Peak 8500 7.5 4.7 160 9.6 6.2 155
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Basin Index (%) 161 128
LOWER GREEN RIVER
Blacks Fork Jct 8869 1.4 -M * 2.5 -M *
Buck Pasture 9632 2.8 -M * 3.5 -M *
EF Blacks Fork GS 9360 1.8 -M * 3.3 -M *
Hams Fork 7840 1.3 2.0 65 2.9 3.1 94
Hewinta 9500 1.1 1.7 65 2.9 4.2 69
Hickerson Park 9122 2.0 1.4 143 1.8 3.5 51
Hole-in-Rock 9168 1.7 1.5 113 2.1 3.4 62
Indian Creek 9425 6.0 5.2 115 5.0 5.4 93
Kelley R.S. 8180 3.1 2.7 115 3.9 4.5 87
Spirit Lk 10235 2.2 -M * 2.3 -M *
Steel Creek Park 10158 3.7 3.6 103 3.7 4.8 77
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Basin Index (%) 104 77
UPPER BEAR RIVER
Bear River RS 8777 1.3 -M * 2.8 -M *
Bug Lake 7987 3.0 3.2 94 5.0 5.0 100
Burts Miller Ranch 8000 .7 -M * 1.8 -M *
Chalk Creek #1 9171 3.5 4.6 76 4.4 7.0 63
Hayden Fork 9130 2.3 2.8 82 3.7 5.8 64
Kelley R.S. 8180 3.1 2.7 115 3.9 4.5 87
Lily Lake 9133 1.8 2.5 72 2.8 5.1 55
Monte Cristo 8932 5.1 4.6 111 5.4 6.6 82
Salt River Summit 7760 -M 1.8 * -M 4.0 *
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Basin Index (%) 92 74
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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.