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: JUNE 9 , 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 26.6 161
Black Bear 8170 23.5 16.9 139 62.0 47.8 130
Blind Bull Sum 8650 -M 5.2 * 40.5 25.1 161
Cottonwood Creek 7670 .0 .0 * 46.9 32.4 145
East Rim Divide 7930 .1 .0 * 24.3 15.6 156
Grand Targhee 9260 32.7 36.8 89 53.5 41.0 130
Granite Creek 6770 .0 .0 * 41.3 24.9 166
Grassy Lake 7265 .0 .0 * 63.0 45.2 139
Gros Ventre Summit 8750 -M .0 * 27.8 17.8 156
Gunsight Pass 9820 6.4 .0 * 30.1 19.4 155
Lewis Lake Divide 7850 9.8 2.2 445* 60.6 43.9 138
Phillips Bench 8200 10.1 2.8 361 51.6 35.3 146
Salt River Summit 7760 .0 .0 * 32.6 21.5 152
Snake River Station 6920 .0 .0 * 39.9 28.8 139
Spring Creek Divide 9000 17.3 3.9 444 46.7 29.9 156
Thumb Divide 7980 .4 .0 * 31.5 24.8 127
Togwotee Pass 9580 19.5 17.3 113 44.9 32.0 140
Two Ocean Plateau 9240 -M 20.7 * -M 35.5 *
Willow Creek 8380 -M .0 * 60.3 43.9 137
Younts Peak 8350 .1 .0 * 36.0 21.7 166
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Basin Index (%) 150* 145
MADISON-GALLATIN
Black Bear 8170 23.5 16.9 139 62.0 47.8 130
Canyon 7870 .0 .0 * 30.6 21.9 140
Madison Plateau 7750 .0 .2 0* 41.5 34.3 121
West Yellowstone 6700 .0 .0 * 26.8 19.6 137
Whiskey Creek 6800 .1 .0 * 32.1 26.9 119
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Basin Index (%) 138* 128
YELLOWSTONE
Beartooth Lake 9360 24.0 12.6 190 33.5 26.2 128
Burnt Mtn 5880 .0 .0 * 24.2 22.2 109
Canyon 7870 .0 .0 * 30.6 21.9 140
Cole Creek 7850 .2 2.2 9 20.4 22.7 90
Evening Star 9200 19.9 13.1 152 51.3 36.5 141
Fisher Creek 9100 26.1 23.1 113 53.8 41.7 129
Northeast Entrance 7350 .0 .0 * 23.9 17.7 135
Parker Peak 9400 14.8 9.1 163 41.9 25.0 168
Sylvan Lake 8420 .2 .6 33* 43.7 30.8 142
Thumb Divide 7980 .4 .0 * 31.5 24.8 127
Two Ocean Plateau 9240 -M 20.7 * -M 35.5 *
White Mill 8700 13.5 12.0 112 40.6 31.7 128
Wolverine 7650 -M .0 * 24.9 17.2 145
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Basin Index (%) 136* 132
WIND RIVER
Burroughs Creek 8750 .0 -M * 33.1 -M *
Castle Creek 8400 .0 -M * 19.3 -M *
Cold Springs 9630 .0 .0 * 25.4 16.2 157
Deer Park 9700 21.3 .0 * 47.9 28.1 170
Hobbs Park 10100 19.0 1.0 1900* 38.6 21.4 180
Kirwin 9550 1.1 .0 * 31.5 17.9 176
Little Warm 9370 .0 .0 * 28.5 19.3 148
Owl Creek 8975 .0 .0 * 18.0 11.5 157
South Pass 9040 10.8 .0 * 38.7 24.4 159
St. Lawrence Alt 8620 .1 .0 * 23.5 15.3 154
Togwotee Pass 9580 19.5 17.3 113 44.9 32.0 140
Townsend Creek 8700 -M .0 * 33.1 19.0 174
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Basin Index (%) 392* 161
BIGHORN BASIN
Bald Mtn. 9380 7.6 8.6 88 24.0 24.5 98
Bear Trap Meadow 8200 .0 .0 * 17.8 14.8 120
Bone Springs Div 9350 1.2 2.2 55 24.1 23.4 103
Grave Springs 8550 .0 .0 * 16.1 17.0 95
Kirwin 9550 1.1 .0 * 31.5 17.9 176
Marquette 8760 .0 -M * 27.1 -M *
Middle Powder 7760 .0 .0 * 17.1 18.2 94
Owl Creek 8975 .0 .0 * 18.0 11.5 157
Powder River Pass 9480 .0 .0 * 21.3 19.9 107
Shell Creek 9580 .4 3.6 11 21.2 21.0 101
Timber Creek 7950 .0 .0 * 19.1 14.6 131
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Basin Index (%) 72* 115
SHOSHONE RIVER
Blackwater 9780 27.8 15.2 183 48.7 28.5 171
Evening Star 9200 19.9 13.1 152 51.3 36.5 141
Marquette 8760 .0 -M * 27.1 -M *
Sylvan Road 7120 .0 .0 * 33.0 22.3 148
Younts Peak 8350 .1 .0 * 36.0 21.7 166
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Basin Index (%) 169* 155
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * 17.8 14.8 120
Cloud Peak Reservoir 9860 5.1 1.0 510* 29.5 22.4 132
Grave Springs 8550 .0 .0 * 16.1 17.0 95
Hansen Sawmill 8360 .0 .0 * -M 15.3 *
Middle Powder 7760 .0 .0 * 17.1 18.2 94
Powder River Pass 9480 .0 .0 * 21.3 19.9 107
Soldier Park 8720 .0 -M * 23.4 -M *
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Basin Index (%) 510* 110
TONGUE RIVER
Big Goose 7990 .0 .0 * 22.7 19.2 118
Bone Springs Div 9350 1.2 2.2 55 24.1 23.4 103
Burgess Junction 7880 .0 .0 * 20.8 19.0 109
Dome Lake 8880 -M .0 * 25.9 21.4 121
Little Goose 8870 .0 -M * 26.3 -M *
Sucker Creek 8880 .0 .0 * 23.8 22.6 105
Tie Creek 6870 .2 .0 * 25.2 19.8 127
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Basin Index (%) 64* 114
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * 14.3 18.3 78
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Basin Index (%) * 78
CHEYENNE RIVER BASIN
Blind Park 6890 .1 .0 * 15.3 19.6 78
North Rapid Creek 6130 .0 .0 * 15.2 17.2 88
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Basin Index (%) * 83
UPPER N. PLATTE
Arapaho Ridge 10960 11.4 2.4 475 33.6 30.2 111
Blackhall Mtn 9820 15.3 -M * 45.8 -M *
Columbine 9160 .8 .0 * -M 32.1 *
Divide Peak 8880 .0 .0 * 28.7 28.0 102
Joe Wright 10120 8.7 8.8 99 38.3 35.3 108
Laprele Creek 8375 .5 .0 * 19.1 18.7 102
Med Bow 10500 25.8 -M * 45.0 -M *
North French Creek 10130 10.9 14.9 73 37.3 36.0 104
Never Summer 10280 14.7 10.8 136 26.7 -M *
Old Battle 10000 30.1 13.0 232 47.2 44.5 106
Rawah 9020 .1 .0 * 23.5 20.6 114
Sage Creek Basin 7850 -M .0 * 19.5 18.4 106
Sand Lake 10050 26.5 15.4 172 35.8 34.3 104
South Brush Creek 8440 .0 .0 * 18.5 21.7 85
Tower 10500 28.5 29.4 97 56.6 50.4 112
Webber Springs 9250 .1 .0 * 40.6 33.8 120
Willow Creek Pass 9540 .2 .0 * 24.0 19.2 125
Zirkel 9340 .0 .0 * 51.0 35.2 145
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Basin Index (%) 140* 111
SWEETWATER
Deer Park 9700 21.3 .0 * 47.9 28.1 170
Larsen Creek 9000 .0 .0 * 28.3 -M *
South Pass 9040 10.8 .0 * 38.7 24.4 159
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Basin Index (%) * 165
LOWER N. PLATTE
Casper Mtn. 7900 .5 .0 * 23.7 22.7 104
Laprele Creek 8375 .5 .0 * 19.1 18.7 102
Reno Hill 8400 .0 .0 * 23.6 23.5 100
Windy Peak 7900 .2 .0 * 19.0 17.0 112
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Basin Index (%) * 104
LARAMIE RIVER
Brooklyn Lake 10240 .3 .6 50* 30.7 29.1 105
Cinnabar Park 9574 .0 .0 * 30.3 31.5 96
Crow Creek 8330 .0 .0 * 16.5 17.7 93
Deadman Hill 10220 7.9 .9 878* 30.4 24.7 123
Rawah 9020 .1 .0 * 23.5 20.6 114
Roach 9700 .0 .0 * 29.1 26.6 109
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Basin Index (%) 553* 107
S. PLATTE
Black Mountain 8920 -M -M * 21.3 -M *
Crow Creek 8330 .0 .0 * 16.5 17.7 93
Deadman Hill 10220 7.9 .9 878* 30.4 24.7 123
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Basin Index (%) 878* 111
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 .0 * 21.1 19.7 107
Divide Peak 8880 .0 .0 * 28.7 28.0 102
Elk River 8700 .0 .0 * 25.0 26.2 95
Little Snake River 8915 .1 .5 20* 46.1 37.3 124
Old Battle 10000 30.1 13.0 232 47.2 44.5 106
Sage Creek Basin 7850 -M .0 * 19.5 18.4 106
Sandstone RS 8150 .0 .0 * 20.6 23.9 86
Whiskey Park 8950 .5 .0 * 37.7 35.8 105
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Basin Index (%) 227* 105
UPPER GREEN RIVER
Big Sandy Opening 9080 .0 .0 * 27.6 18.7 148
Blind Bull Sum 8650 -M 5.2 * 40.5 25.1 161
East Rim Divide 7930 .1 .0 * 24.3 15.6 156
Elkhart Park G.S. 9400 .0 .0 * 27.7 18.7 148
Gros Ventre Summit 8750 -M .0 * 27.8 17.8 156
Gunsight Pass 9820 6.4 .0 * 30.1 19.4 155
Kendall R.S. 7740 .0 .0 * 32.1 18.2 176
Loomis Park 8240 .2 .0 * 35.7 22.2 161
New Fork Lake 8340 .0 .0 * 23.5 15.2 155
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 .0 .0 * 30.3 18.0 168
Spring Creek Divide 9000 17.3 3.9 444 46.7 29.9 156
Triple Peak 8500 .9 .0 * 46.6 32.3 144
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Basin Index (%) 638* 156
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 .1 .0 * 25.2 15.8 159
Hewinta 9500 .0 .0 * 22.4 19.1 117
Hickerson Park 9122 .0 .0 * 16.6 14.8 112
Hole-in-Rock 9168 .0 .0 * 17.5 14.4 122
Indian Creek 9425 15.4 3.9 395 47.6 28.8 165
Kelley R.S. 8180 .0 .0 * 35.7 23.5 152
Spirit Lk 10235 .0 -M * 22.6 -M *
Steel Creek Park 10158 .6 4.0 15 26.9 22.6 119
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Basin Index (%) 204* 138
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 22.5 -M *
Bug Lake 7987 .0 .0 * 39.2 25.2 156
Burts Miller Ranch 8000 .0 -M * 12.6 -M *
Chalk Creek #1 9171 .0 .5 0* 42.9 32.8 131
Hayden Fork 9130 .0 .0 * 33.3 27.4 122
Kelley R.S. 8180 .0 .0 * 35.7 23.5 152
Lily Lake 9133 .0 .0 * 24.2 23.0 105
Monte Cristo 8932 1.2 .0 * 46.5 33.7 138
Salt River Summit 7760 .0 .0 * 32.6 21.5 152
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Basin Index (%) 240* 136
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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.
