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: JUNE 1 , 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 25.7 169
Black Bear 8170 36.6 24.5 149 62.0 46.4 134
Blind Bull Sum 8650 -M 11.5 * 40.0 24.4 164
Cottonwood Creek 7670 6.3 .0 * 46.2 31.4 147
East Rim Divide 7930 .1 .0 * 23.7 15.0 158
Grand Targhee 9260 49.9 40.0 125 53.4 38.6 138
Granite Creek 6770 .0 .0 * 40.3 24.1 167
Grassy Lake 7265 13.2 4.8 275 63.0 43.7 144
Gros Ventre Summit 8750 -M .0 * -M 17.0 *
Gunsight Pass 9820 15.5 2.8 554 30.1 18.7 161
Lewis Lake Divide 7850 23.1 11.6 199 60.5 42.7 142
Phillips Bench 8200 21.6 9.6 225 51.7 34.2 151
Salt River Summit 7760 .0 .0 * 32.8 20.8 158
Snake River Station 6920 .0 .0 * 39.9 27.8 144
Spring Creek Divide 9000 28.4 11.5 247 46.5 29.2 159
Thumb Divide 7980 .4 .0 * 31.5 23.8 132
Togwotee Pass 9580 28.0 19.0 147 44.9 31.0 145
Two Ocean Plateau 9240 -M 24.9 * -M 34.4 *
Willow Creek 8380 -M 3.8 * 60.0 42.5 141
Younts Peak 8350 .0 3.2 0 35.0 20.7 169
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Basin Index (%) 176* 149
MADISON-GALLATIN
Black Bear 8170 36.6 24.5 149 62.0 46.4 134
Canyon 7870 .0 .0 * 30.2 21.0 144
Madison Plateau 7750 9.9 6.2 160 41.6 33.1 126
West Yellowstone 6700 .0 .0 * 26.9 18.5 145
Whiskey Creek 6800 .0 .0 * 32.0 25.7 125
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Basin Index (%) 151* 133
YELLOWSTONE
Beartooth Lake 9360 29.5 17.1 173 33.4 25.2 133
Burnt Mtn 5880 .0 .0 * 24.1 20.8 116
Canyon 7870 .0 .0 * 30.2 21.0 144
Cole Creek 7850 10.7 9.2 116 19.7 21.3 92
Evening Star 9200 30.3 17.8 170 51.3 34.9 147
Fisher Creek 9100 38.7 28.1 138 53.8 40.1 134
Northeast Entrance 7350 .0 .0 * 23.8 16.7 143
Parker Peak 9400 27.2 13.8 197 41.6 23.8 175
Sylvan Lake 8420 8.0 6.6 121 43.7 29.3 149
Thumb Divide 7980 .4 .0 * 31.5 23.8 132
Two Ocean Plateau 9240 -M 24.9 * -M 34.4 *
White Mill 8700 24.5 16.9 145 40.8 30.4 134
Wolverine 7650 .0 .0 * 24.9 16.5 151
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Basin Index (%) 155 138
WIND RIVER
Burroughs Creek 8750 .0 -M * 30.6 -M *
Castle Creek 8400 .0 -M * 19.3 -M *
Cold Springs 9630 .0 .0 * 25.1 15.4 163
Deer Park 9700 29.4 3.1 948 48.0 27.0 178
Hobbs Park 10100 28.6 6.1 469 38.9 20.5 190
Kirwin 9550 13.6 1.7 800 31.4 16.9 186
Little Warm 9370 5.7 .0 * 28.3 18.4 154
Owl Creek 8975 .0 .0 * 17.6 10.7 164
South Pass 9040 23.7 .2 11850* 38.2 23.6 162
St. Lawrence Alt 8620 .0 .0 * 23.5 14.5 162
Togwotee Pass 9580 28.0 19.0 147 44.9 31.0 145
Townsend Creek 8700 6.7 .0 * 32.2 18.2 177
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Basin Index (%) 451* 167
BIGHORN BASIN
Bald Mtn. 9380 17.6 13.7 128 23.8 23.5 101
Bear Trap Meadow 8200 .0 .0 * 17.6 13.8 128
Bone Springs Div 9350 13.6 8.6 158 24.0 22.2 108
Grave Springs 8550 .0 .0 * 16.1 16.2 99
Kirwin 9550 13.6 1.7 800 31.4 16.9 186
Marquette 8760 10.3 -M * 26.7 -M *
Middle Powder 7760 .0 .0 * 16.5 17.4 95
Owl Creek 8975 .0 .0 * 17.6 10.7 164
Powder River Pass 9480 .0 .0 * 19.6 18.7 105
Shell Creek 9580 11.2 8.9 126 19.9 19.9 100
Timber Creek 7950 .0 .0 * 19.1 13.6 140
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Basin Index (%) 170* 119
SHOSHONE RIVER
Blackwater 9780 34.1 19.6 174 48.5 27.4 177
Evening Star 9200 30.3 17.8 170 51.3 34.9 147
Marquette 8760 10.3 -M * 26.7 -M *
Sylvan Road 7120 .0 .0 * 33.3 21.3 156
Younts Peak 8350 .0 3.2 0 35.0 20.7 169
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Basin Index (%) 159 161
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * 17.6 13.8 128
Cloud Peak Reservoir 9860 15.3 5.1 300 29.2 21.2 138
Grave Springs 8550 .0 .0 * 16.1 16.2 99
Hansen Sawmill 8360 .0 .0 * 21.3 14.1 151
Middle Powder 7760 .0 .0 * 16.5 17.4 95
Powder River Pass 9480 .0 .0 * 19.6 18.7 105
Soldier Park 8720 1.5 -M * 23.1 -M *
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Basin Index (%) 300* 119
TONGUE RIVER
Big Goose 7990 2.6 .0 * 22.0 18.2 121
Bone Springs Div 9350 13.6 8.6 158 24.0 22.2 108
Burgess Junction 7880 .0 .0 * 19.1 18.1 106
Dome Lake 8880 9.3 .0 * 25.5 20.3 126
Little Goose 8870 7.4 -M * 26.4 -M *
Sucker Creek 8880 5.5 .2 2750* 21.8 21.6 101
Tie Creek 6870 .0 .0 * 24.8 18.7 133
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Basin Index (%) 352* 115
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * 14.3 16.8 85
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Basin Index (%) * 85
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 15.1 18.4 82
North Rapid Creek 6130 .0 .0 * 13.4 16.0 84
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Basin Index (%) * 83
UPPER N. PLATTE
Arapaho Ridge 10960 18.1 7.8 232 33.5 29.2 115
Blackhall Mtn 9820 25.2 -M * 45.1 -M *
Columbine 9160 -M .0 * 35.4 31.4 113
Divide Peak 8880 .0 .0 * 28.6 27.4 104
Joe Wright 10120 13.7 13.9 99 38.1 34.3 111
Laprele Creek 8375 .4 .0 * 18.7 17.9 104
Med Bow 10500 34.4 -M * 44.2 -M *
North French Creek 10130 18.9 20.3 93 36.9 35.0 105
Never Summer 10280 22.6 15.5 146 26.2 -M *
Old Battle 10000 35.1 23.9 147 47.1 43.5 108
Rawah 9020 .1 .0 * 23.1 19.6 118
Sage Creek Basin 7850 -M .0 * 19.5 17.9 109
Sand Lake 10050 29.2 20.4 143 35.7 33.2 108
South Brush Creek 8440 .1 .0 * 18.0 21.1 85
Tower 10500 37.9 36.3 104 56.4 49.3 114
Webber Springs 9250 5.8 .0 * 40.4 33.1 122
Willow Creek Pass 9540 7.5 .0 * 23.6 18.5 128
Zirkel 9340 1.4 .0 * 50.7 34.0 149
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Basin Index (%) 138* 114
SWEETWATER
Deer Park 9700 29.4 3.1 948 48.0 27.0 178
Larsen Creek 9000 .1 .0 * 28.4 -M *
South Pass 9040 23.7 .2 11850* 38.2 23.6 162
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Basin Index (%) 1612* 170
LOWER N. PLATTE
Casper Mtn. 7900 .5 .0 * 22.9 21.7 106
Laprele Creek 8375 .4 .0 * 18.7 17.9 104
Reno Hill 8400 .0 .0 * 23.2 22.7 102
Windy Peak 7900 .1 .0 * 19.0 16.1 118
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Basin Index (%) * 107
LARAMIE RIVER
Brooklyn Lake 10240 6.5 5.0 130 30.1 28.4 106
Cinnabar Park 9574 1.1 1.1 100* 29.4 30.2 97
Crow Creek 8330 .0 .0 * 16.2 16.1 101
Deadman Hill 10220 15.7 7.8 201 30.1 24.0 125
Rawah 9020 .1 .0 * 23.1 19.6 118
Roach 9700 3.9 1.8 217 29.0 25.7 113
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Basin Index (%) 174 110
S. PLATTE
Black Mountain 8920 -M -M * 21.2 -M *
Crow Creek 8330 .0 .0 * 16.2 16.1 101
Deadman Hill 10220 15.7 7.8 201 30.1 24.0 125
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Basin Index (%) 201* 115
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 .0 * 21.0 19.2 109
Divide Peak 8880 .0 .0 * 28.6 27.4 104
Elk River 8700 .0 .0 * 25.1 25.5 98
Little Snake River 8915 4.3 1.9 226* 45.8 36.1 127
Old Battle 10000 35.1 23.9 147 47.1 43.5 108
Sage Creek Basin 7850 -M .0 * 19.5 17.9 109
Sandstone RS 8150 .0 .0 * 20.4 23.3 88
Whiskey Park 8950 7.0 6.3 111 37.8 34.9 108
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Basin Index (%) 145* 108
UPPER GREEN RIVER
Big Sandy Opening 9080 4.0 .0 * 27.5 17.9 154
Blind Bull Sum 8650 -M 11.5 * 40.0 24.4 164
East Rim Divide 7930 .1 .0 * 23.7 15.0 158
Elkhart Park G.S. 9400 3.9 .0 * 27.6 17.9 154
Gros Ventre Summit 8750 -M .0 * -M 17.0 *
Gunsight Pass 9820 15.5 2.8 554 30.1 18.7 161
Kendall R.S. 7740 .0 .0 * 31.8 17.6 181
Loomis Park 8240 4.7 .0 * 35.6 21.5 166
New Fork Lake 8340 -M .0 * 22.7 14.6 155
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 .0 .0 * 30.2 17.5 173
Spring Creek Divide 9000 28.4 11.5 247 46.5 29.2 159
Triple Peak 8500 12.9 .0 * 46.3 31.5 147
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Basin Index (%) 486* 160
LOWER GREEN RIVER
Blacks Fork Jct 8869 .0 -M * 19.8 -M *
Buck Pasture 9632 .0 -M * 28.8 -M *
EF Blacks Fork GS 9360 .0 -M * 24.1 -M *
Hams Fork 7840 .1 .0 * 25.0 15.2 164
Hewinta 9500 .0 .0 * 22.4 18.6 120
Hickerson Park 9122 .0 .0 * 16.3 14.4 113
Hole-in-Rock 9168 .0 .0 * 17.3 14.0 124
Indian Creek 9425 25.8 10.4 248 47.2 28.1 168
Kelley R.S. 8180 -M .0 * 35.7 22.8 157
Spirit Lk 10235 .0 -M * 22.6 -M *
Steel Creek Park 10158 10.5 9.4 112 26.9 22.1 122
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Basin Index (%) 184* 141
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 22.3 -M *
Bug Lake 7987 4.7 .0 * 39.2 24.4 161
Burts Miller Ranch 8000 .0 -M * 12.4 -M *
Chalk Creek #1 9171 10.7 6.0 178 42.5 32.0 133
Hayden Fork 9130 .0 .0 * 33.3 26.8 124
Kelley R.S. 8180 -M .0 * 35.7 22.8 157
Lily Lake 9133 .0 .0 * 24.1 22.3 108
Monte Cristo 8932 15.8 4.2 376 46.5 32.8 142
Salt River Summit 7760 .0 .0 * 32.8 20.8 158
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Basin Index (%) 306* 140
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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.
