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 SUNDAY: JUNE 4 , 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 * 43.0 26.0 165
Black Bear 8170 32.1 21.2 151 62.0 46.8 132
Blind Bull Sum 8650 -M 9.0 * 40.4 24.6 164
Cottonwood Creek 7670 1.4 .0 * 46.4 31.8 146
East Rim Divide 7930 .1 .0 * 24.0 15.3 157
Grand Targhee 9260 44.2 38.6 115 53.5 39.0 137
Granite Creek 6770 .0 .0 * 40.8 24.5 167
Grassy Lake 7265 8.6 .9 956* 63.0 44.2 143
Gros Ventre Summit 8750 -M .0 * -M 17.3 *
Gunsight Pass 9820 12.5 1.0 1250* 30.2 18.9 160
Lewis Lake Divide 7850 18.5 8.4 220 60.5 43.1 140
Phillips Bench 8200 17.6 7.1 248 51.7 34.7 149
Salt River Summit 7760 .1 .0 * 32.9 21.1 156
Snake River Station 6920 .0 .0 * 39.9 28.1 142
Spring Creek Divide 9000 24.4 9.2 265 46.7 29.4 159
Thumb Divide 7980 .4 .0 * 31.5 24.1 131
Togwotee Pass 9580 25.2 18.1 139 45.0 31.3 144
Two Ocean Plateau 9240 -M 23.0 * -M 34.7 *
Willow Creek 8380 -M 1.5 * 60.3 43.0 140
Younts Peak 8350 .0 1.4 0* 36.0 21.0 171
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Basin Index (%) 175* 148
MADISON-GALLATIN
Black Bear 8170 32.1 21.2 151 62.0 46.8 132
Canyon 7870 .0 .0 * 30.5 21.2 144
Madison Plateau 7750 5.3 3.6 147 41.6 33.7 123
West Yellowstone 6700 .0 .0 * 26.8 19.0 141
Whiskey Creek 6800 .0 .0 * 32.1 26.1 123
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Basin Index (%) 151* 131
YELLOWSTONE
Beartooth Lake 9360 28.7 15.3 188 33.5 25.5 131
Burnt Mtn 5880 .0 .0 * 24.1 21.0 115
Canyon 7870 .0 .0 * 30.5 21.2 144
Cole Creek 7850 6.2 6.1 102 20.1 21.7 93
Evening Star 9200 26.6 15.8 168 51.4 35.3 146
Fisher Creek 9100 33.6 26.6 126 53.8 40.6 133
Northeast Entrance 7350 .0 .0 * 23.9 17.0 141
Parker Peak 9400 22.4 11.6 193 41.7 24.1 173
Sylvan Lake 8420 3.7 3.3 112 43.7 29.7 147
Thumb Divide 7980 .4 .0 * 31.5 24.1 131
Two Ocean Plateau 9240 -M 23.0 * -M 34.7 *
White Mill 8700 20.5 14.9 138 40.7 30.8 132
Wolverine 7650 -M .0 * 24.9 16.7 149
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Basin Index (%) 152 136
WIND RIVER
Burroughs Creek 8750 .0 -M * 32.2 -M *
Castle Creek 8400 .0 -M * 19.2 -M *
Cold Springs 9630 .0 .0 * 25.3 15.7 161
Deer Park 9700 26.4 .8 3300* 47.6 27.3 174
Hobbs Park 10100 25.5 4.2 607 38.9 20.9 186
Kirwin 9550 9.3 .6 1550* 31.3 17.3 181
Little Warm 9370 1.6 .0 * 28.4 18.7 152
Owl Creek 8975 .0 .0 * 17.6 11.0 160
South Pass 9040 24.8 .0 * 38.1 23.9 159
St. Lawrence Alt 8620 .0 .0 * 23.5 14.8 159
Togwotee Pass 9580 25.2 18.1 139 45.0 31.3 144
Townsend Creek 8700 2.5 .0 * 32.8 18.5 177
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Basin Index (%) 486* 165
BIGHORN BASIN
Bald Mtn. 9380 17.8 12.0 148 23.9 23.8 100
Bear Trap Meadow 8200 .0 .0 * 17.6 14.1 125
Bone Springs Div 9350 10.3 5.6 184 24.2 22.5 108
Grave Springs 8550 .0 .0 * 16.1 16.4 98
Kirwin 9550 9.3 .6 1550* 31.3 17.3 181
Marquette 8760 6.0 -M * 27.3 -M *
Middle Powder 7760 .0 .0 * 16.8 17.6 95
Owl Creek 8975 .0 .0 * 17.6 11.0 160
Powder River Pass 9480 .0 .0 * 19.8 19.1 104
Shell Creek 9580 7.8 6.9 113 20.1 20.1 100
Timber Creek 7950 .0 .0 * 19.1 13.9 137
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Basin Index (%) 180* 117
SHOSHONE RIVER
Blackwater 9780 31.9 17.4 183 48.5 27.7 175
Evening Star 9200 26.6 15.8 168 51.4 35.3 146
Marquette 8760 6.0 -M * 27.3 -M *
Sylvan Road 7120 .0 .0 * 33.2 21.6 154
Younts Peak 8350 .0 1.4 0* 36.0 21.0 171
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Basin Index (%) 169* 160
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * 17.6 14.1 125
Cloud Peak Reservoir 9860 12.8 2.3 557 29.2 21.5 136
Grave Springs 8550 .0 .0 * 16.1 16.4 98
Hansen Sawmill 8360 .0 .0 * 18.7 14.5 129
Middle Powder 7760 .0 .0 * 16.8 17.6 95
Powder River Pass 9480 .0 .0 * 19.8 19.1 104
Soldier Park 8720 .1 -M * 23.1 -M *
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Basin Index (%) 557* 115
TONGUE RIVER
Big Goose 7990 .2 .0 * 22.1 18.4 120
Bone Springs Div 9350 10.3 5.6 184 24.2 22.5 108
Burgess Junction 7880 .0 .0 * 20.3 18.3 111
Dome Lake 8880 5.1 .0 * 25.5 20.5 124
Little Goose 8870 3.9 -M * 26.4 -M *
Sucker Creek 8880 1.0 .0 * 22.4 21.8 103
Tie Creek 6870 .2 .0 * 24.7 18.9 131
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Basin Index (%) 300* 116
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * 14.2 17.3 82
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Basin Index (%) * 82
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 15.1 18.9 80
North Rapid Creek 6130 .0 .0 * 13.6 16.5 82
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Basin Index (%) * 81
UPPER N. PLATTE
Arapaho Ridge 10960 16.3 5.4 302 33.6 29.6 114
Blackhall Mtn 9820 21.8 -M * 45.4 -M *
Columbine 9160 -M .0 * 35.5 31.7 112
Divide Peak 8880 .0 .0 * 28.7 27.6 104
Joe Wright 10120 12.6 12.4 102 38.1 34.7 110
Laprele Creek 8375 .4 .0 * 18.8 18.3 103
Med Bow 10500 31.8 -M * 44.4 -M *
North French Creek 10130 16.5 18.1 91 37.1 35.3 105
Never Summer 10280 21.7 14.2 153 26.4 -M *
Old Battle 10000 32.4 20.8 156 47.1 43.8 108
Rawah 9020 .1 .0 * 23.2 20.1 115
Sage Creek Basin 7850 -M .0 * 19.5 18.0 108
Sand Lake 10050 28.5 19.1 149 35.8 33.6 107
South Brush Creek 8440 .1 .0 * 18.2 21.3 85
Tower 10500 35.4 34.3 103 56.4 49.6 114
Webber Springs 9250 2.3 .0 * 40.4 33.3 121
Willow Creek Pass 9540 4.1 .0 * 23.8 18.8 127
Zirkel 9340 .0 .0 * 50.7 34.5 147
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Basin Index (%) 137* 113
SWEETWATER
Deer Park 9700 26.4 .8 3300* 47.6 27.3 174
Larsen Creek 9000 .0 .0 * 28.4 -M *
South Pass 9040 24.8 .0 * 38.1 23.9 159
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Basin Index (%) 6400* 167
LOWER N. PLATTE
Casper Mtn. 7900 .5 .0 * 23.1 22.1 105
Laprele Creek 8375 .4 .0 * 18.8 18.3 103
Reno Hill 8400 .0 .0 * 23.1 23.0 100
Windy Peak 7900 .1 .0 * 19.0 16.4 116
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Basin Index (%) * 105
LARAMIE RIVER
Brooklyn Lake 10240 2.9 2.4 121 30.4 28.6 106
Cinnabar Park 9574 .0 .0 * 29.4 30.7 96
Crow Creek 8330 .0 .0 * 16.1 16.7 96
Deadman Hill 10220 13.8 4.7 294 30.2 24.3 124
Rawah 9020 .1 .0 * 23.2 20.1 115
Roach 9700 1.2 .5 240* 29.1 26.0 112
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Basin Index (%) 237* 108
S. PLATTE
Black Mountain 8920 -M -M * 21.3 -M *
Crow Creek 8330 .0 .0 * 16.1 16.7 96
Deadman Hill 10220 13.8 4.7 294 30.2 24.3 124
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Basin Index (%) 294* 113
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 .0 * 21.1 19.4 109
Divide Peak 8880 .0 .0 * 28.7 27.6 104
Elk River 8700 .0 .0 * 25.0 25.7 97
Little Snake River 8915 .1 .7 14* 45.9 36.5 126
Old Battle 10000 32.4 20.8 156 47.1 43.8 108
Sage Creek Basin 7850 -M .0 * 19.5 18.0 108
Sandstone RS 8150 .0 .0 * 20.3 23.5 86
Whiskey Park 8950 3.3 3.1 106 37.8 35.2 107
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Basin Index (%) 146* 107
UPPER GREEN RIVER
Big Sandy Opening 9080 .1 .0 * 27.6 18.2 152
Blind Bull Sum 8650 -M 9.0 * 40.4 24.6 164
East Rim Divide 7930 .1 .0 * 24.0 15.3 157
Elkhart Park G.S. 9400 .0 .0 * 27.7 18.2 152
Gros Ventre Summit 8750 -M .0 * -M 17.3 *
Gunsight Pass 9820 12.5 1.0 1250* 30.2 18.9 160
Kendall R.S. 7740 .0 .0 * 32.0 17.9 179
Loomis Park 8240 1.0 .0 * 35.8 21.8 164
New Fork Lake 8340 .0 .0 * 23.2 14.8 157
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 .0 .0 * 30.3 17.7 171
Spring Creek Divide 9000 24.4 9.2 265 46.7 29.4 159
Triple Peak 8500 8.4 .0 * 46.3 31.8 146
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Basin Index (%) 456* 159
LOWER GREEN RIVER
Blacks Fork Jct 8869 .1 -M * 19.9 -M *
Buck Pasture 9632 .2 -M * 28.8 -M *
EF Blacks Fork GS 9360 -M -M * 24.1 -M *
Hams Fork 7840 .1 .0 * 25.2 15.5 163
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 * 17.3 14.2 122
Indian Creek 9425 22.2 8.2 271 47.4 28.3 167
Kelley R.S. 8180 .0 .0 * 35.8 23.1 155
Spirit Lk 10235 .0 -M * 22.6 -M *
Steel Creek Park 10158 7.0 8.2 85 26.9 22.3 121
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Basin Index (%) 179* 140
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 22.4 -M *
Bug Lake 7987 .8 .0 * 39.2 24.7 159
Burts Miller Ranch 8000 .0 -M * 12.6 -M *
Chalk Creek #1 9171 5.8 3.6 161 43.0 32.3 133
Hayden Fork 9130 .0 .0 * 33.0 27.0 122
Kelley R.S. 8180 .0 .0 * 35.8 23.1 155
Lily Lake 9133 .0 .0 * 24.2 22.6 107
Monte Cristo 8932 11.5 1.8 639* 46.5 33.1 140
Salt River Summit 7760 .1 .0 * 32.9 21.1 156
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Basin Index (%) 337* 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.