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 THURSDAY: MARCH 2 , 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 24.4 13.6 179 31.7 17.4 182
Black Bear 8170 -M 29.7 * -M 31.0 *
Blind Bull Sum 8650 -M 18.0 * -M 16.0 *
Cottonwood Creek 7670 -M 17.1 * -M 19.7 *
East Rim Divide 7930 -M 8.2 * -M 9.6 *
Grand Targhee 9260 -M 30.3 * -M 25.0 *
Granite Creek 6770 -M 13.8 * -M 16.6 *
Grassy Lake 7265 -M 26.3 * -M 29.6 *
Gros Ventre Summit 8750 -M 9.8 * -M 10.2 *
Gunsight Pass 9820 17.8 10.6 168 20.5 10.9 188
Lewis Lake Divide 7850 -M 25.2 * -M 29.0 *
Phillips Bench 8200 -M 19.8 * -M 22.9 *
Salt River Summit 7760 -M 10.7 * -M 13.5 *
Snake River Station 6920 -M 14.3 * -M 18.7 *
Spring Creek Divide 9000 -M 18.7 * -M 19.3 *
Thumb Divide 7980 -M 12.3 * -M 14.7 *
Togwotee Pass 9580 -M 17.9 * -M 19.5 *
Two Ocean Plateau 9240 -M 21.6 * -M 21.8 *
Willow Creek 8380 -M 22.4 * -M 27.0 *
Younts Peak 8350 -M 11.7 * -M 12.7 *
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Basin Index (%) 174* 184*
MADISON-GALLATIN
Black Bear 8170 -M 29.7 * -M 31.0 *
Canyon 7870 -M 10.6 * -M 13.1 *
Madison Plateau 7750 -M 17.9 * -M 21.3 *
West Yellowstone 6700 11.5 9.0 128 19.9 11.7 170
Whiskey Creek 6800 -M 12.1 * -M 16.3 *
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Basin Index (%) 128* 170*
YELLOWSTONE
Beartooth Lake 9360 -M 16.9 * -M 15.8 *
Burnt Mtn 5880 5.2 4.0 130 11.3 9.6 118
Canyon 7870 -M 10.6 * -M 13.1 *
Cole Creek 7850 8.5 10.1 84 6.1 9.1 67
Evening Star 9200 -M 19.2 * -M 22.2 *
Fisher Creek 9100 32.9 25.9 127 37.0 25.7 144
Northeast Entrance 7350 -M 8.3 * -M 9.9 *
Parker Peak 9400 -M 16.1 * -M 14.1 *
Sylvan Lake 8420 -M 15.9 * -M 18.0 *
Thumb Divide 7980 -M 12.3 * -M 14.7 *
Two Ocean Plateau 9240 -M 21.6 * -M 21.8 *
White Mill 8700 -M 18.4 * -M 19.1 *
Wolverine 7650 -M 8.5 * -M 10.0 *
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Basin Index (%) 116* 123*
WIND RIVER
Burroughs Creek 8750 -M -M * -M -M *
Castle Creek 8400 11.3 -M * 13.4 -M *
Cold Springs 9630 -M 5.5 * -M 7.5 *
Deer Park 9700 27.8 10.8 257 28.5 15.4 185
Hobbs Park 10100 -M 9.8 * -M 9.5 *
Kirwin 9550 15.9 7.0 227 18.7 8.8 212
Little Warm 9370 -M 8.0 * -M 9.9 *
Owl Creek 8975 -M 3.9 * -M 4.3 *
South Pass 9040 -M 11.5 * -M 13.5 *
St. Lawrence Alt 8620 7.4 5.2 142 11.8 6.6 179
Togwotee Pass 9580 -M 17.9 * -M 19.5 *
Townsend Creek 8700 -M 6.6 * -M 8.7 *
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Basin Index (%) 222* 192*
BIGHORN BASIN
Bald Mtn. 9380 15.3 14.8 103 13.2 13.2 100
Bear Trap Meadow 8200 4.4 4.4 100 5.6 6.2 90
Bone Springs Div 9350 13.6 12.2 111 13.0 11.8 110
Grave Springs 8550 5.1 6.9 74 5.7 8.0 71
Kirwin 9550 15.9 7.0 227 18.7 8.8 212
Marquette 8760 7.2 -M * 11.0 -M *
Middle Powder 7760 6.0 8.1 74 6.1 8.8 69
Owl Creek 8975 -M 3.9 * -M 4.3 *
Powder River Pass 9480 6.2 8.0 78 8.9 9.6 93
Shell Creek 9580 12.9 11.7 110 10.0 10.7 93
Timber Creek 7950 5.2 3.8 137 6.6 5.3 125
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Basin Index (%) 110 107
SHOSHONE RIVER
Blackwater 9780 -M 17.3 * -M 16.2 *
Evening Star 9200 -M 19.2 * -M 22.2 *
Marquette 8760 7.2 -M * 11.0 -M *
Sylvan Road 7120 -M 9.5 * -M 13.9 *
Younts Peak 8350 -M 11.7 * -M 12.7 *
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Basin Index (%) * *
POWDER RIVER
Bear Trap Meadow 8200 4.4 4.4 100 5.6 6.2 90
Cloud Peak Reservoir 9860 9.9 10.4 95 11.3 9.6 118
Grave Springs 8550 5.1 6.9 74 5.7 8.0 71
Hansen Sawmill 8360 6.7 4.7 143 8.6 6.1 141
Middle Powder 7760 6.0 8.1 74 6.1 8.8 69
Powder River Pass 9480 6.2 8.0 78 8.9 9.6 93
Soldier Park 8720 -M -M * -M -M *
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Basin Index (%) 90 96
TONGUE RIVER
Big Goose 7990 7.1 6.2 115 8.1 7.9 103
Bone Springs Div 9350 13.6 12.2 111 13.0 11.8 110
Burgess Junction 7880 -M 8.3 * -M 9.0 *
Dome Lake 8880 9.4 8.7 108 10.6 10.0 106
Little Goose 8870 7.8 -M * 10.2 -M *
Sucker Creek 8880 8.8 9.0 98 8.6 10.7 80
Tie Creek 6870 4.9 4.3 114 9.1 8.5 107
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Basin Index (%) 108 101
BELLE FOURCHE
Cole Canyon 5910 3.0 4.9 61 5.7 7.1 80
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Basin Index (%) 61 80
CHEYENNE RIVER BASIN
Blind Park 6890 4.4 6.4 69 6.8 9.5 72
North Rapid Creek 6130 4.4 5.9 75 5.8 7.7 75
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Basin Index (%) 72 73
UPPER N. PLATTE
Arapaho Ridge 10960 22.6 16.8 135 22.8 17.8 128
Blackhall Mtn 9820 -M -M * -M -M *
Columbine 9160 22.7 19.9 114 24.4 20.4 120
Divide Peak 8880 -M 15.9 * -M 16.8 *
Joe Wright 10120 -M 16.8 * -M 20.0 *
Laprele Creek 8375 10.3 7.8 132 9.8 9.3 105
Med Bow 10500 -M -M * -M -M *
North French Creek 10130 22.3 21.1 106 23.4 21.1 111
Never Summer 10280 -M 16.3 * -M -M *
Old Battle 10000 33.4 24.1 139 -M 28.0 *
Rawah 9020 -M 8.8 * -M 11.0 *
Sage Creek Basin 7850 -M 10.6 * -M 11.8 *
Sand Lake 10050 25.8 21.2 122 23.8 19.0 125
South Brush Creek 8440 -M 10.3 * -M 11.8 *
Tower 10500 -M 36.5 * -M 32.0 *
Webber Springs 9250 -M 18.8 * -M 21.2 *
Willow Creek Pass 9540 -M 9.6 * -M 10.4 *
Zirkel 9340 -M 23.1 * -M 23.6 *
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Basin Index (%) 124* 119*
SWEETWATER
Deer Park 9700 27.8 10.8 257 28.5 15.4 185
Larsen Creek 9000 18.2 9.6 190 20.5 -M *
South Pass 9040 -M 11.5 * -M 13.5 *
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Basin Index (%) 225 185*
LOWER N. PLATTE
Casper Mtn. 7900 9.2 10.3 89 8.8 11.2 79
Laprele Creek 8375 10.3 7.8 132 9.8 9.3 105
Reno Hill 8400 9.8 10.2 96 9.9 11.1 89
Windy Peak 7900 9.0 5.8 155 9.4 7.8 121
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Basin Index (%) 112 96
LARAMIE RIVER
Brooklyn Lake 10240 21.9 15.1 145 19.6 16.1 122
Cinnabar Park 9574 17.2 17.2 100 19.6 19.8 99
Crow Creek 8330 4.7 6.7 70 7.4 7.8 95
Deadman Hill 10220 18.3 12.5 146 17.2 12.8 134
Rawah 9020 -M 8.8 * -M 11.0 *
Roach 9700 -M 12.5 * -M 14.7 *
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Basin Index (%) 121 113
S. PLATTE
Black Mountain 8920 9.1 -M * 10.2 -M *
Crow Creek 8330 4.7 6.7 70 7.4 7.8 95
Deadman Hill 10220 18.3 12.5 146 17.2 12.8 134
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Basin Index (%) 120 119
LITTLE SNAKE RIVER
Battle Mountain 7440 -M 9.9 * -M 12.1 *
Divide Peak 8880 -M 15.9 * -M 16.8 *
Elk River 8700 -M 15.7 * -M 16.0 *
Little Snake River 8915 -M 19.8 * -M 25.1 *
Old Battle 10000 33.4 24.1 139 -M 28.0 *
Sage Creek Basin 7850 -M 10.6 * -M 11.8 *
Sandstone RS 8150 12.2 10.5 116 14.6 15.1 97
Whiskey Park 8950 -M 21.7 * -M 22.4 *
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Basin Index (%) 132* 97*
UPPER GREEN RIVER
Big Sandy Opening 9080 -M 10.2 * -M 10.6 *
Blind Bull Sum 8650 -M 18.0 * -M 16.0 *
East Rim Divide 7930 -M 8.2 * -M 9.6 *
Elkhart Park G.S. 9400 -M 9.5 * -M 10.6 *
Gros Ventre Summit 8750 -M 9.8 * -M 10.2 *
Gunsight Pass 9820 17.8 10.6 168 20.5 10.9 188
Kendall R.S. 7740 -M 9.8 * -M 11.7 *
Loomis Park 8240 -M 11.8 * -M 14.1 *
New Fork Lake 8340 -M 8.3 * -M 8.8 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 -M 9.7 * -M 11.6 *
Spring Creek Divide 9000 -M 18.7 * -M 19.3 *
Triple Peak 8500 -M 17.0 * -M 20.3 *
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Basin Index (%) 168* 188*
LOWER GREEN RIVER
Blacks Fork Jct 8869 -M -M * -M -M *
Buck Pasture 9632 -M -M * -M -M *
EF Blacks Fork GS 9360 -M -M * -M -M *
Hams Fork 7840 16.0 9.3 172 17.7 9.2 192
Hewinta 9500 -M 8.0 * -M 10.9 *
Hickerson Park 9122 -M 6.0 * -M 7.6 *
Hole-in-Rock 9168 6.6 5.6 118 8.7 7.1 123
Indian Creek 9425 -M 19.0 * -M 17.9 *
Kelley R.S. 8180 -M 12.2 * -M 14.6 *
Spirit Lk 10235 13.6 -M * 14.4 -M *
Steel Creek Park 10158 14.7 11.6 127 15.9 12.5 127
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Basin Index (%) 141* 147*
UPPER BEAR RIVER
Bear River RS 8777 -M -M * -M -M *
Bug Lake 7987 -M 14.9 * -M 15.5 *
Burts Miller Ranch 8000 -M -M * -M -M *
Chalk Creek #1 9171 -M 18.5 * -M 19.5 *
Hayden Fork 9130 -M 12.2 * -M 16.4 *
Kelley R.S. 8180 -M 12.2 * -M 14.6 *
Lily Lake 9133 -M 10.4 * -M 13.3 *
Monte Cristo 8932 31.8 21.2 150 -M 20.6 *
Salt River Summit 7760 -M 10.7 * -M 13.5 *
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Basin Index (%) 150* *
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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.