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 SATURDAY: JUNE 3 , 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 * 43.4 25.9 168
Black Bear 8170 33.7 22.3 151 61.9 46.6 133
Blind Bull Sum 8650 -M 9.9 * 40.4 24.5 165
Cottonwood Creek 7670 3.3 .0 * 46.3 31.7 146
East Rim Divide 7930 .1 .0 * 24.0 15.2 158
Grand Targhee 9260 46.2 39.1 118 53.5 38.8 138
Granite Creek 6770 .0 .0 * 40.7 24.3 167
Grassy Lake 7265 10.2 2.2 464* 63.0 44.0 143
Gros Ventre Summit 8750 -M .0 * -M 17.2 *
Gunsight Pass 9820 13.8 1.7 812 30.2 18.8 161
Lewis Lake Divide 7850 20.0 9.5 211 60.5 43.0 141
Phillips Bench 8200 18.8 7.9 238 51.7 34.4 150
Salt River Summit 7760 .0 .0 * 32.9 21.0 157
Snake River Station 6920 .0 .0 * 39.9 28.0 142
Spring Creek Divide 9000 25.8 10.1 255 46.7 29.3 159
Thumb Divide 7980 .3 .0 * 31.5 24.0 131
Togwotee Pass 9580 26.3 18.3 144 45.0 31.2 144
Two Ocean Plateau 9240 -M 23.6 * -M 34.6 *
Willow Creek 8380 -M 2.3 * 60.4 42.8 141
Younts Peak 8350 .0 1.8 0 35.7 20.9 171
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Basin Index (%) 176* 148
MADISON-GALLATIN
Black Bear 8170 33.7 22.3 151 61.9 46.6 133
Canyon 7870 .0 .0 * 30.4 21.1 144
Madison Plateau 7750 6.8 4.3 158 41.6 33.5 124
West Yellowstone 6700 .0 .0 * 26.8 18.8 143
Whiskey Creek 6800 .1 .0 * 32.0 26.0 123
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Basin Index (%) 153* 132
YELLOWSTONE
Beartooth Lake 9360 29.2 15.9 184 33.4 25.4 131
Burnt Mtn 5880 .0 .0 * 24.1 21.0 115
Canyon 7870 .0 .0 * 30.4 21.1 144
Cole Creek 7850 7.7 7.2 107 19.9 21.6 92
Evening Star 9200 27.7 16.4 169 51.3 35.2 146
Fisher Creek 9100 35.7 27.2 131 53.7 40.4 133
Northeast Entrance 7350 .0 .0 * 23.9 16.9 141
Parker Peak 9400 24.0 12.3 195 41.7 24.0 174
Sylvan Lake 8420 5.3 4.3 123 43.7 29.5 148
Thumb Divide 7980 .3 .0 * 31.5 24.0 131
Two Ocean Plateau 9240 -M 23.6 * -M 34.6 *
White Mill 8700 21.7 15.5 140 40.7 30.7 133
Wolverine 7650 -M .0 * 24.9 16.6 150
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Basin Index (%) 153 137
WIND RIVER
Burroughs Creek 8750 .0 -M * 31.6 -M *
Castle Creek 8400 .0 -M * 19.1 -M *
Cold Springs 9630 .0 .0 * 25.1 15.5 162
Deer Park 9700 27.2 1.5 1813* 47.6 27.2 175
Hobbs Park 10100 26.4 4.8 550 38.9 20.8 187
Kirwin 9550 10.8 .9 1200* 31.3 17.1 183
Little Warm 9370 3.0 .0 * 28.3 18.6 152
Owl Creek 8975 .0 .0 * 17.7 10.9 162
South Pass 9040 -M .2 * 38.2 23.8 161
St. Lawrence Alt 8620 .0 .0 * 23.5 14.7 160
Togwotee Pass 9580 26.3 18.3 144 45.0 31.2 144
Townsend Creek 8700 4.0 .0 * 32.6 18.4 177
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Basin Index (%) 383* 166
BIGHORN BASIN
Bald Mtn. 9380 16.3 12.6 129 23.8 23.7 100
Bear Trap Meadow 8200 .0 .0 * 17.5 14.1 124
Bone Springs Div 9350 11.4 6.6 173 24.1 22.4 108
Grave Springs 8550 .0 .0 * 16.0 16.3 98
Kirwin 9550 10.8 .9 1200* 31.3 17.1 183
Marquette 8760 7.5 -M * 27.4 -M *
Middle Powder 7760 .0 .0 * 16.6 17.5 95
Owl Creek 8975 .0 .0 * 17.7 10.9 162
Powder River Pass 9480 .0 .0 * 19.6 19.0 103
Shell Creek 9580 9.1 7.5 121 20.0 20.1 100
Timber Creek 7950 .0 .0 * 19.1 13.8 138
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Basin Index (%) 172* 118
SHOSHONE RIVER
Blackwater 9780 32.4 18.0 180 48.5 27.6 176
Evening Star 9200 27.7 16.4 169 51.3 35.2 146
Marquette 8760 7.5 -M * 27.4 -M *
Sylvan Road 7120 .0 .0 * 33.2 21.5 154
Younts Peak 8350 .0 1.8 0 35.7 20.9 171
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Basin Index (%) 166 160
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * 17.5 14.1 124
Cloud Peak Reservoir 9860 13.6 3.1 439 29.2 21.4 136
Grave Springs 8550 .0 .0 * 16.0 16.3 98
Hansen Sawmill 8360 .0 .0 * -M 14.3 *
Middle Powder 7760 .0 .0 * 16.6 17.5 95
Powder River Pass 9480 .0 .0 * 19.6 19.0 103
Soldier Park 8720 .1 -M * 23.0 -M *
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Basin Index (%) 439* 112
TONGUE RIVER
Big Goose 7990 .6 .0 * 21.9 18.3 120
Bone Springs Div 9350 11.4 6.6 173 24.1 22.4 108
Burgess Junction 7880 .0 .0 * 19.6 18.2 108
Dome Lake 8880 6.6 .0 * 25.4 20.4 125
Little Goose 8870 5.2 -M * 26.4 -M *
Sucker Creek 8880 2.9 .0 * 21.9 21.7 101
Tie Creek 6870 .1 .0 * 24.7 18.9 131
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Basin Index (%) 327* 115
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * 14.2 17.1 83
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Basin Index (%) * 83
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 15.1 18.8 80
North Rapid Creek 6130 .0 .0 * 13.6 16.4 83
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Basin Index (%) * 82
UPPER N. PLATTE
Arapaho Ridge 10960 16.9 6.2 273 33.6 29.5 114
Blackhall Mtn 9820 23.1 -M * 45.4 -M *
Columbine 9160 -M .0 * 35.4 31.6 112
Divide Peak 8880 .0 .0 * 28.6 27.6 104
Joe Wright 10120 13.0 13.0 100 38.2 34.6 110
Laprele Creek 8375 .3 .0 * 18.5 18.2 102
Med Bow 10500 32.5 -M * 44.4 -M *
North French Creek 10130 17.4 18.8 93 37.0 35.2 105
Never Summer 10280 22.7 14.7 154 26.4 -M *
Old Battle 10000 33.2 22.0 151 47.0 43.7 108
Rawah 9020 .1 .0 * 23.2 19.9 117
Sage Creek Basin 7850 -M .0 * 19.6 18.0 109
Sand Lake 10050 28.4 19.6 145 35.8 33.4 107
South Brush Creek 8440 .0 .0 * 17.9 21.2 84
Tower 10500 36.3 35.0 104 56.4 49.5 114
Webber Springs 9250 3.7 .0 * 40.5 33.2 122
Willow Creek Pass 9540 5.6 .0 * 23.8 18.7 127
Zirkel 9340 .0 .0 * 50.7 34.4 147
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Basin Index (%) 137* 113
SWEETWATER
Deer Park 9700 27.2 1.5 1813* 47.6 27.2 175
Larsen Creek 9000 .1 .0 * 28.4 -M *
South Pass 9040 -M .2 * 38.2 23.8 161
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Basin Index (%) 1820* 168
LOWER N. PLATTE
Casper Mtn. 7900 .4 .0 * 22.8 21.9 104
Laprele Creek 8375 .3 .0 * 18.5 18.2 102
Reno Hill 8400 .0 .0 * 23.0 22.9 100
Windy Peak 7900 .1 .0 * 19.0 16.3 117
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Basin Index (%) * 105
LARAMIE RIVER
Brooklyn Lake 10240 4.7 3.2 147 30.1 28.5 106
Cinnabar Park 9574 .0 .0 * 29.4 30.6 96
Crow Creek 8330 .0 .0 * 16.2 16.4 99
Deadman Hill 10220 14.9 5.7 261 30.2 24.2 125
Rawah 9020 .1 .0 * 23.2 19.9 117
Roach 9700 2.2 1.0 220* 29.1 25.9 112
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Basin Index (%) 221* 109
S. PLATTE
Black Mountain 8920 -M -M * 21.2 -M *
Crow Creek 8330 .0 .0 * 16.2 16.4 99
Deadman Hill 10220 14.9 5.7 261 30.2 24.2 125
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Basin Index (%) 261* 114
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 .0 * 21.1 19.3 109
Divide Peak 8880 .0 .0 * 28.6 27.6 104
Elk River 8700 .0 .0 * 25.1 25.6 98
Little Snake River 8915 1.1 1.0 110* 45.9 36.3 126
Old Battle 10000 33.2 22.0 151 47.0 43.7 108
Sage Creek Basin 7850 -M .0 * 19.6 18.0 109
Sandstone RS 8150 .0 .0 * 20.3 23.4 87
Whiskey Park 8950 4.7 4.1 115 37.8 35.1 108
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Basin Index (%) 144* 107
UPPER GREEN RIVER
Big Sandy Opening 9080 .9 .0 * 27.6 18.0 153
Blind Bull Sum 8650 -M 9.9 * 40.4 24.5 165
East Rim Divide 7930 .1 .0 * 24.0 15.2 158
Elkhart Park G.S. 9400 .6 .0 * 27.7 18.1 153
Gros Ventre Summit 8750 -M .0 * -M 17.2 *
Gunsight Pass 9820 13.8 1.7 812 30.2 18.8 161
Kendall R.S. 7740 .0 .0 * 32.0 17.8 180
Loomis Park 8240 2.3 .0 * 35.8 21.6 166
New Fork Lake 8340 .0 .0 * 23.0 14.7 156
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 .0 .0 * 30.2 17.6 172
Spring Creek Divide 9000 25.8 10.1 255 46.7 29.3 159
Triple Peak 8500 9.9 .0 * 46.3 31.7 146
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Basin Index (%) 453* 160
LOWER GREEN RIVER
Blacks Fork Jct 8869 .0 -M * 20.0 -M *
Buck Pasture 9632 .1 -M * 28.9 -M *
EF Blacks Fork GS 9360 -M -M * 24.1 -M *
Hams Fork 7840 .0 .0 * 25.2 15.4 164
Hewinta 9500 .0 .0 * 22.4 18.8 119
Hickerson Park 9122 .0 .0 * 16.3 14.5 112
Hole-in-Rock 9168 .0 .0 * 17.2 14.1 122
Indian Creek 9425 23.6 9.1 259 47.4 28.2 168
Kelley R.S. 8180 .0 .0 * 35.8 23.0 156
Spirit Lk 10235 .0 -M * 22.5 -M *
Steel Creek Park 10158 8.4 8.7 97 26.9 22.3 121
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Basin Index (%) 180* 140
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 22.5 -M *
Bug Lake 7987 .8 .0 * 39.3 24.6 160
Burts Miller Ranch 8000 .0 -M * 12.6 -M *
Chalk Creek #1 9171 7.6 4.3 177 43.0 32.2 134
Hayden Fork 9130 .1 .0 * 33.2 26.9 123
Kelley R.S. 8180 .0 .0 * 35.8 23.0 156
Lily Lake 9133 .0 .0 * 24.2 22.5 108
Monte Cristo 8932 13.0 2.6 500* 46.5 33.0 141
Salt River Summit 7760 .0 .0 * 32.9 21.0 157
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Basin Index (%) 312* 139
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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.