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: JUNE 5 , 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 .0 .0 * 42.9 26.1 164
Black Bear 8170 30.4 20.2 150 62.0 47.0 132
Blind Bull Sum 8650 -M 8.2 * 40.5 24.7 164
Cottonwood Creek 7670 .4 .0 * 46.5 31.9 146
East Rim Divide 7930 .2 .0 * 24.0 15.4 156
Grand Targhee 9260 -M 38.3 * -M 39.3 *
Granite Creek 6770 .0 .0 * 41.0 24.6 167
Grassy Lake 7265 7.2 .3 2400* 63.2 44.3 143
Gros Ventre Summit 8750 -M .0 * -M 17.3 *
Gunsight Pass 9820 11.7 .4 2925* 30.1 19.0 158
Lewis Lake Divide 7850 17.1 7.3 234 60.6 43.2 140
Phillips Bench 8200 16.0 6.3 254 51.7 34.8 149
Salt River Summit 7760 .1 .0 * 32.8 21.2 155
Snake River Station 6920 .0 .0 * 39.9 28.2 141
Spring Creek Divide 9000 23.0 8.2 280 46.7 29.5 158
Thumb Divide 7980 .4 .0 * 31.5 24.2 130
Togwotee Pass 9580 24.3 18.0 135 45.0 31.4 143
Two Ocean Plateau 9240 -M 22.5 * -M 34.8 *
Willow Creek 8380 -M .4 * -M 43.2 *
Younts Peak 8350 .1 1.1 9* 36.1 21.1 171
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Basin Index (%) 212* 149
MADISON-GALLATIN
Black Bear 8170 30.4 20.2 150 62.0 47.0 132
Canyon 7870 .0 .0 * 30.6 21.3 144
Madison Plateau 7750 3.5 2.9 121 41.6 33.8 123
West Yellowstone 6700 .0 .0 * 26.8 19.2 140
Whiskey Creek 6800 .1 .0 * 32.2 26.3 122
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Basin Index (%) 147* 131
YELLOWSTONE
Beartooth Lake 9360 28.2 14.7 192 33.5 25.6 131
Burnt Mtn 5880 .0 .0 * 24.1 21.2 114
Canyon 7870 .0 .0 * 30.6 21.3 144
Cole Creek 7850 4.5 5.3 85 20.2 21.8 93
Evening Star 9200 25.2 15.2 166 51.4 35.5 145
Fisher Creek 9100 32.2 25.9 124 53.8 40.7 132
Northeast Entrance 7350 .0 .0 * 23.9 17.1 140
Parker Peak 9400 20.8 11.0 189 41.7 24.2 172
Sylvan Lake 8420 1.9 2.5 76 43.7 29.8 147
Thumb Divide 7980 .4 .0 * 31.5 24.2 130
Two Ocean Plateau 9240 -M 22.5 * -M 34.8 *
White Mill 8700 19.1 14.2 135 40.7 31.0 131
Wolverine 7650 -M .0 * 24.9 16.8 148
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Basin Index (%) 149 136
WIND RIVER
Burroughs Creek 8750 .0 -M * 31.8 -M *
Castle Creek 8400 .0 -M * 19.2 -M *
Cold Springs 9630 .0 .0 * 25.4 15.8 161
Deer Park 9700 25.8 .1 25800* 47.6 27.5 173
Hobbs Park 10100 24.5 3.6 681 38.9 21.0 185
Kirwin 9550 8.0 .5 1600* 31.4 17.4 180
Little Warm 9370 .0 .0 * 28.4 18.8 151
Owl Creek 8975 .0 .0 * 17.6 11.1 159
South Pass 9040 22.3 .0 * 38.2 24.0 159
St. Lawrence Alt 8620 .0 .0 * 23.5 15.0 157
Togwotee Pass 9580 24.3 18.0 135 45.0 31.4 143
Townsend Creek 8700 1.4 .0 * 33.0 18.6 177
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Basin Index (%) 479* 164
BIGHORN BASIN
Bald Mtn. 9380 14.2 11.3 126 23.9 23.9 100
Bear Trap Meadow 8200 .0 .0 * 17.8 14.2 125
Bone Springs Div 9350 8.9 4.9 182 24.2 22.7 107
Grave Springs 8550 .0 .0 * 16.4 16.4 100
Kirwin 9550 8.0 .5 1600* 31.4 17.4 180
Marquette 8760 4.4 -M * 27.3 -M *
Middle Powder 7760 .0 .0 * 17.0 17.7 96
Owl Creek 8975 .0 .0 * 17.6 11.1 159
Powder River Pass 9480 .0 .0 * 20.1 19.2 105
Shell Creek 9580 6.2 6.3 98 20.2 20.3 100
Timber Creek 7950 .0 .0 * 19.1 14.0 136
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Basin Index (%) 162* 117
SHOSHONE RIVER
Blackwater 9780 31.3 16.8 186 48.5 27.8 174
Evening Star 9200 25.2 15.2 166 51.4 35.5 145
Marquette 8760 4.4 -M * 27.3 -M *
Sylvan Road 7120 .0 .0 * 33.1 21.7 153
Younts Peak 8350 .1 1.1 9* 36.1 21.1 171
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Basin Index (%) 171* 159
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * 17.8 14.2 125
Cloud Peak Reservoir 9860 11.6 1.9 611 29.2 21.6 135
Grave Springs 8550 .0 .0 * 16.4 16.4 100
Hansen Sawmill 8360 .0 .0 * 21.4 14.6 147
Middle Powder 7760 .0 .0 * 17.0 17.7 96
Powder River Pass 9480 .0 .0 * 20.1 19.2 105
Soldier Park 8720 .0 -M * 23.1 -M *
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Basin Index (%) 611* 118
TONGUE RIVER
Big Goose 7990 .0 .0 * 22.3 18.5 121
Bone Springs Div 9350 8.9 4.9 182 24.2 22.7 107
Burgess Junction 7880 .0 .0 * 20.4 18.4 111
Dome Lake 8880 3.1 .0 * 25.6 20.6 124
Little Goose 8870 2.7 -M * 26.4 -M *
Sucker Creek 8880 .0 .0 * 22.9 21.9 105
Tie Creek 6870 .0 .0 * 24.7 19.0 130
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Basin Index (%) 245* 116
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * 14.2 17.5 81
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Basin Index (%) * 81
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 15.1 19.0 79
North Rapid Creek 6130 .0 .0 * 13.6 16.6 82
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Basin Index (%) * 81
UPPER N. PLATTE
Arapaho Ridge 10960 15.1 4.8 315 33.6 29.8 113
Blackhall Mtn 9820 20.3 -M * 45.3 -M *
Columbine 9160 -M .0 * 35.5 31.8 112
Divide Peak 8880 .0 .0 * 28.8 27.7 104
Joe Wright 10120 11.2 11.8 95 38.2 34.8 110
Laprele Creek 8375 .4 .0 * 19.0 18.4 103
Med Bow 10500 30.8 -M * 44.3 -M *
North French Creek 10130 15.1 17.6 86 37.1 35.5 105
Never Summer 10280 20.1 13.6 148 26.5 -M *
Old Battle 10000 31.5 19.4 162 47.1 44.0 107
Rawah 9020 .1 .0 * 23.3 20.3 115
Sage Creek Basin 7850 -M .0 * 19.5 18.1 108
Sand Lake 10050 28.2 18.5 152 35.8 33.7 106
South Brush Creek 8440 .0 .0 * 18.4 21.4 86
Tower 10500 34.1 33.6 101 56.5 49.8 113
Webber Springs 9250 1.0 .0 * 40.4 33.4 121
Willow Creek Pass 9540 2.2 .0 * 23.8 18.9 126
Zirkel 9340 .0 .0 * 50.7 34.6 147
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Basin Index (%) 133* 112
SWEETWATER
Deer Park 9700 25.8 .1 25800* 47.6 27.5 173
Larsen Creek 9000 .0 .0 * 28.4 -M *
South Pass 9040 22.3 .0 * 38.2 24.0 159
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Basin Index (%) 48100* 167
LOWER N. PLATTE
Casper Mtn. 7900 .5 .0 * 23.3 22.2 105
Laprele Creek 8375 .4 .0 * 19.0 18.4 103
Reno Hill 8400 .0 .0 * 23.5 23.1 102
Windy Peak 7900 .1 .0 * 19.1 16.6 115
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Basin Index (%) * 106
LARAMIE RIVER
Brooklyn Lake 10240 1.0 1.8 56* 30.5 28.6 107
Cinnabar Park 9574 .0 .0 * 29.3 31.0 95
Crow Creek 8330 .0 .0 * 16.2 17.3 94
Deadman Hill 10220 12.3 3.7 332 30.2 24.4 124
Rawah 9020 .1 .0 * 23.3 20.3 115
Roach 9700 .8 .2 400* 29.1 26.1 111
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Basin Index (%) 249* 107
S. PLATTE
Black Mountain 8920 -M -M * 21.2 -M *
Crow Creek 8330 .0 .0 * 16.2 17.3 94
Deadman Hill 10220 12.3 3.7 332 30.2 24.4 124
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Basin Index (%) 332* 111
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 .0 * 21.0 19.5 108
Divide Peak 8880 .0 .0 * 28.8 27.7 104
Elk River 8700 .0 .0 * 24.9 25.8 97
Little Snake River 8915 .1 .5 20* 46.0 36.7 125
Old Battle 10000 31.5 19.4 162 47.1 44.0 107
Sage Creek Basin 7850 -M .0 * 19.5 18.1 108
Sandstone RS 8150 .0 .0 * 20.4 23.6 86
Whiskey Park 8950 1.8 2.0 90* 37.7 35.3 107
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Basin Index (%) 153* 106
UPPER GREEN RIVER
Big Sandy Opening 9080 .0 .0 * 27.5 18.3 150
Blind Bull Sum 8650 -M 8.2 * 40.5 24.7 164
East Rim Divide 7930 .2 .0 * 24.0 15.4 156
Elkhart Park G.S. 9400 .0 .0 * 27.8 18.3 152
Gros Ventre Summit 8750 -M .0 * -M 17.3 *
Gunsight Pass 9820 11.7 .4 2925* 30.1 19.0 158
Kendall R.S. 7740 .0 .0 * 32.1 18.0 178
Loomis Park 8240 .4 .0 * 36.0 21.8 165
New Fork Lake 8340 .0 .0 * 23.2 15.0 155
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 .0 .0 * 30.3 17.8 170
Spring Creek Divide 9000 23.0 8.2 280 46.7 29.5 158
Triple Peak 8500 7.0 .0 * 46.4 31.9 145
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Basin Index (%) 492* 159
LOWER GREEN RIVER
Blacks Fork Jct 8869 .0 -M * 20.0 -M *
Buck Pasture 9632 .0 -M * 28.8 -M *
EF Blacks Fork GS 9360 .0 -M * 24.1 -M *
Hams Fork 7840 .2 .0 * 25.2 15.6 162
Hewinta 9500 .0 .0 * 22.4 18.9 119
Hickerson Park 9122 .0 .0 * 16.3 14.6 112
Hole-in-Rock 9168 .0 .0 * 17.3 14.2 122
Indian Creek 9425 21.2 7.3 290 47.5 28.4 167
Kelley R.S. 8180 .0 .0 * 35.8 23.2 154
Spirit Lk 10235 .0 -M * 22.6 -M *
Steel Creek Park 10158 5.9 7.6 78 26.9 22.4 120
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Basin Index (%) 183* 139
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 22.5 -M *
Bug Lake 7987 .0 .0 * 39.2 24.8 158
Burts Miller Ranch 8000 .0 -M * 12.6 -M *
Chalk Creek #1 9171 3.9 2.8 139 42.9 32.4 132
Hayden Fork 9130 .0 .0 * 33.3 27.1 123
Kelley R.S. 8180 .0 .0 * 35.8 23.2 154
Lily Lake 9133 .0 .0 * 24.2 22.7 107
Monte Cristo 8932 9.5 .0 * 46.5 33.2 140
Salt River Summit 7760 .1 .0 * 32.8 21.2 155
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Basin Index (%) 482* 138
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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.