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 WEDNESDAY: JUNE 21 , 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 * 44.9 27.5 163
Black Bear 8170 12.7 4.0 318 64.8 49.0 132
Blind Bull Sum 8650 -M .0 * 41.8 26.0 161
Cottonwood Creek 7670 .0 .0 * 47.8 33.6 142
East Rim Divide 7930 .2 .0 * 25.4 16.3 156
Grand Targhee 9260 -M 29.4 * 56.2 43.0 131
Granite Creek 6770 .0 .0 * 42.0 25.6 164
Grassy Lake 7265 -M .0 * 65.7 46.5 141
Gros Ventre Summit 8750 .0 .0 * 29.2 18.6 157
Gunsight Pass 9820 .0 .0 * 31.6 20.6 153
Lewis Lake Divide 7850 .0 .0 * 63.2 45.1 140
Phillips Bench 8200 .0 .0 * 53.5 36.4 147
Salt River Summit 7760 .0 .0 * 33.2 22.3 149
Snake River Station 6920 .0 .0 * 41.8 29.9 140
Spring Creek Divide 9000 .9 .0 * 47.2 30.8 153
Thumb Divide 7980 .5 .0 * 32.6 25.8 126
Togwotee Pass 9580 11.3 7.6 149 47.8 33.0 145
Two Ocean Plateau 9240 -M 10.7 * -M 36.9 *
Willow Creek 8380 -M .0 * 62.0 45.2 137
Younts Peak 8350 .0 .0 * 38.6 22.7 170
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Basin Index (%) 221* 145
MADISON-GALLATIN
Black Bear 8170 12.7 4.0 318 64.8 49.0 132
Canyon 7870 .0 .0 * 31.3 22.9 137
Madison Plateau 7750 .0 .0 * 43.6 35.5 123
West Yellowstone 6700 .0 .0 * 28.1 20.4 138
Whiskey Creek 6800 .1 .0 * 34.2 28.0 122
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Basin Index (%) 320* 130
YELLOWSTONE
Beartooth Lake 9360 16.4 3.1 529 35.3 27.3 129
Burnt Mtn 5880 .0 .0 * 24.7 23.7 104
Canyon 7870 .0 .0 * 31.3 22.9 137
Cole Creek 7850 .0 .0 * 20.7 24.0 86
Evening Star 9200 10.0 3.6 278 54.6 38.0 144
Fisher Creek 9100 15.2 10.4 146 56.6 43.4 130
Northeast Entrance 7350 .0 .0 * 25.6 18.9 135
Parker Peak 9400 4.2 .2 2100* 44.0 26.4 167
Sylvan Lake 8420 .1 .0 * 45.6 32.1 142
Thumb Divide 7980 .5 .0 * 32.6 25.8 126
Two Ocean Plateau 9240 -M 10.7 * -M 36.9 *
White Mill 8700 2.7 2.8 96 42.8 33.3 129
Wolverine 7650 -M .0 * 26.8 18.2 147
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Basin Index (%) 244* 132
WIND RIVER
Burroughs Creek 8750 .0 -M * 33.1 -M *
Castle Creek 8400 .0 -M * 20.7 -M *
Cold Springs 9630 .0 .0 * 26.2 17.0 154
Deer Park 9700 3.1 .0 * 48.8 29.4 166
Hobbs Park 10100 3.4 .0 * 39.9 22.4 178
Kirwin 9550 .1 .0 * 33.1 18.9 175
Little Warm 9370 .0 .0 * 30.1 20.2 149
Owl Creek 8975 .0 .0 * 18.5 12.4 149
South Pass 9040 .1 .0 * 39.3 25.2 156
St. Lawrence Alt 8620 .1 .0 * 24.0 16.1 149
Togwotee Pass 9580 11.3 7.6 149 47.8 33.0 145
Townsend Creek 8700 .0 .0 * 33.4 19.8 169
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Basin Index (%) 238* 159
BIGHORN BASIN
Bald Mtn. 9380 .0 .6 0* 25.6 26.1 98
Bear Trap Meadow 8200 .0 .0 * 19.9 15.7 127
Bone Springs Div 9350 .0 .0 * 25.0 24.8 101
Grave Springs 8550 .0 .0 * 16.8 17.8 94
Kirwin 9550 .1 .0 * 33.1 18.9 175
Marquette 8760 .0 -M * 28.2 -M *
Middle Powder 7760 .0 .0 * 18.5 19.3 96
Owl Creek 8975 .0 .0 * 18.5 12.4 149
Powder River Pass 9480 .0 .0 * 22.7 21.2 107
Shell Creek 9580 .0 .0 * 23.4 22.4 104
Timber Creek 7950 .0 .0 * 20.0 15.6 128
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Basin Index (%) 17* 115
SHOSHONE RIVER
Blackwater 9780 18.7 7.5 249 51.3 29.8 172
Evening Star 9200 10.0 3.6 278 54.6 38.0 144
Marquette 8760 .0 -M * 28.2 -M *
Sylvan Road 7120 .0 .0 * 35.4 23.5 151
Younts Peak 8350 .0 .0 * 38.6 22.7 170
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Basin Index (%) 259* 158
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * 19.9 15.7 127
Cloud Peak Reservoir 9860 .0 .0 * 30.5 23.6 129
Grave Springs 8550 .0 .0 * 16.8 17.8 94
Hansen Sawmill 8360 .0 .0 * -M 16.2 *
Middle Powder 7760 .0 .0 * 18.5 19.3 96
Powder River Pass 9480 .0 .0 * 22.7 21.2 107
Soldier Park 8720 .0 -M * 25.4 -M *
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Basin Index (%) * 111
TONGUE RIVER
Big Goose 7990 .0 .0 * 22.9 19.9 115
Bone Springs Div 9350 .0 .0 * 25.0 24.8 101
Burgess Junction 7880 .0 .0 * 22.5 20.1 112
Dome Lake 8880 .0 .0 * 27.0 22.5 120
Little Goose 8870 .0 -M * 27.2 -M *
Sucker Creek 8880 .0 .0 * 25.3 23.9 106
Tie Creek 6870 .1 .0 * 26.2 21.2 124
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Basin Index (%) * 112
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * 16.0 19.3 83
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Basin Index (%) * 83
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 17.1 21.2 81
North Rapid Creek 6130 .0 .0 * 17.5 19.1 92
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Basin Index (%) * 86
UPPER N. PLATTE
Arapaho Ridge 10960 .2 .0 * 33.6 31.1 108
Blackhall Mtn 9820 .1 -M * 45.9 -M *
Columbine 9160 -M .0 * 35.5 32.7 109
Divide Peak 8880 .0 .0 * 28.4 28.7 99
Joe Wright 10120 .1 .0 * 38.3 36.2 106
Laprele Creek 8375 .0 .0 * 19.2 19.6 98
Med Bow 10500 5.7 -M * 45.4 -M *
North French Creek 10130 .2 2.0 10* 37.3 37.0 101
Never Summer 10280 .4 .7 57* 26.7 -M *
Old Battle 10000 6.3 .2 3150* 47.4 45.4 104
Rawah 9020 .1 .0 * 23.5 21.3 110
Sage Creek Basin 7850 -M .0 * 19.5 19.0 103
Sand Lake 10050 5.7 3.5 163 37.0 35.4 105
South Brush Creek 8440 .0 .0 * 18.3 22.5 81
Tower 10500 9.2 11.5 80 56.5 51.3 110
Webber Springs 9250 .1 .0 * 40.4 34.6 117
Willow Creek Pass 9540 .0 .0 * 23.7 20.0 118
Zirkel 9340 .0 .0 * 51.1 36.5 140
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Basin Index (%) 125* 108
SWEETWATER
Deer Park 9700 3.1 .0 * 48.8 29.4 166
Larsen Creek 9000 .0 .0 * 29.1 -M *
South Pass 9040 .1 .0 * 39.3 25.2 156
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Basin Index (%) * 161
LOWER N. PLATTE
Casper Mtn. 7900 .0 .0 * 24.2 23.7 102
Laprele Creek 8375 .0 .0 * 19.2 19.6 98
Reno Hill 8400 .0 .0 * 23.8 24.3 98
Windy Peak 7900 .2 .0 * 19.3 17.9 108
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Basin Index (%) * 101
LARAMIE RIVER
Brooklyn Lake 10240 .4 .0 * 32.1 30.0 107
Cinnabar Park 9574 .0 .0 * 30.2 32.5 93
Crow Creek 8330 .0 .0 * 16.5 18.9 87
Deadman Hill 10220 .2 .0 * 30.3 25.4 119
Rawah 9020 .1 .0 * 23.5 21.3 110
Roach 9700 .0 .0 * 29.0 27.4 106
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Basin Index (%) * 104
S. PLATTE
Black Mountain 8920 -M -M * 21.2 -M *
Crow Creek 8330 .0 .0 * 16.5 18.9 87
Deadman Hill 10220 .2 .0 * 30.3 25.4 119
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Basin Index (%) * 106
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 .0 * 21.1 20.4 103
Divide Peak 8880 .0 .0 * 28.4 28.7 99
Elk River 8700 .0 .0 * 24.9 26.8 93
Little Snake River 8915 .1 .0 * 46.3 38.2 121
Old Battle 10000 6.3 .2 3150* 47.4 45.4 104
Sage Creek Basin 7850 -M .0 * 19.5 19.0 103
Sandstone RS 8150 .0 .0 * 20.4 24.5 83
Whiskey Park 8950 .1 .0 * 37.7 36.6 103
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Basin Index (%) 3250* 103
UPPER GREEN RIVER
Big Sandy Opening 9080 .0 .0 * 28.6 19.5 147
Blind Bull Sum 8650 -M .0 * 41.8 26.0 161
East Rim Divide 7930 .2 .0 * 25.4 16.3 156
Elkhart Park G.S. 9400 -M .0 * 28.8 19.5 148
Gros Ventre Summit 8750 .0 .0 * 29.2 18.6 157
Gunsight Pass 9820 .0 .0 * 31.6 20.6 153
Kendall R.S. 7740 .0 .0 * 34.2 18.9 181
Loomis Park 8240 .2 .0 * 37.3 22.9 163
New Fork Lake 8340 .0 .0 * 24.5 16.1 152
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 .0 .0 * 30.7 18.6 165
Spring Creek Divide 9000 .9 .0 * 47.2 30.8 153
Triple Peak 8500 .0 .0 * 48.4 33.3 145
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Basin Index (%) * 156
LOWER GREEN RIVER
Blacks Fork Jct 8869 .1 -M * 20.0 -M *
Buck Pasture 9632 .0 -M * 28.9 -M *
EF Blacks Fork GS 9360 -M -M * 24.3 -M *
Hams Fork 7840 .2 .0 * 25.7 16.5 156
Hewinta 9500 .0 .0 * 22.6 19.8 114
Hickerson Park 9122 .2 .0 * -M 15.5 *
Hole-in-Rock 9168 .0 .0 * 17.6 15.1 117
Indian Creek 9425 .9 .0 * 48.1 29.6 162
Kelley R.S. 8180 .0 .0 * 36.8 24.2 152
Spirit Lk 10235 .0 -M * -M -M *
Steel Creek Park 10158 -M .0 * 27.0 23.3 116
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Basin Index (%) * 138
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 22.6 -M *
Bug Lake 7987 .8 .0 * 40.1 25.8 155
Burts Miller Ranch 8000 .0 -M * 12.7 -M *
Chalk Creek #1 9171 .0 .0 * 43.2 33.8 128
Hayden Fork 9130 .0 .0 * 33.2 28.3 117
Kelley R.S. 8180 .0 .0 * 36.8 24.2 152
Lily Lake 9133 .0 .0 * 24.4 23.8 103
Monte Cristo 8932 .3 .0 * 47.9 34.5 139
Salt River Summit 7760 .0 .0 * 33.2 22.3 149
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Basin Index (%) * 134
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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.