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 TUESDAY: MAY 30 , 2017
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7030 .0 .0 * 43.4 25.5 170
Black Bear 8170 39.2 26.9 146 61.9 46.1 134
Blind Bull Sum 8650 -M 13.2 * 40.0 24.2 165
Cottonwood Creek 7670 8.8 .0 * 46.1 31.2 148
East Rim Divide 7930 .1 .0 * 23.7 14.9 159
Grand Targhee 9260 51.9 40.6 128 53.5 38.4 139
Granite Creek 6770 .0 .0 * 39.8 23.9 167
Grassy Lake 7265 16.1 7.1 227 62.9 43.4 145
Gros Ventre Summit 8750 8.1 .0 * 27.3 16.9 162
Gunsight Pass 9820 17.2 4.0 430 30.1 18.5 163
Lewis Lake Divide 7850 26.0 13.6 191 60.4 42.4 142
Phillips Bench 8200 24.4 11.3 216 51.7 34.0 152
Salt River Summit 7760 .0 .0 * 32.9 20.7 159
Snake River Station 6920 .0 .0 * 39.9 27.6 145
Spring Creek Divide 9000 31.2 13.0 240 46.6 29.0 161
Thumb Divide 7980 .3 .0 * 31.5 23.7 133
Togwotee Pass 9580 29.5 20.0 148 44.9 30.8 146
Two Ocean Plateau 9240 -M 26.0 * -M 34.2 *
Willow Creek 8380 -M 5.5 * 60.0 42.4 142
Younts Peak 8350 .0 5.2 0 35.0 20.5 171
----- -----
Basin Index (%) 178* 150
MADISON-GALLATIN
Black Bear 8170 39.2 26.9 146 61.9 46.1 134
Canyon 7870 .0 .0 * 30.1 20.8 145
Madison Plateau 7750 12.1 8.1 149 41.6 32.9 126
West Yellowstone 6700 .0 .0 * 26.9 18.4 146
Whiskey Creek 6800 -M .0 * 31.8 25.4 125
----- -----
Basin Index (%) 147* 134
YELLOWSTONE
Beartooth Lake 9360 30.3 18.4 165 33.3 25.1 133
Burnt Mtn 5880 .0 .0 * 23.7 20.6 115
Canyon 7870 .0 .0 * 30.1 20.8 145
Cole Creek 7850 12.5 10.8 116 19.6 21.1 93
Evening Star 9200 32.3 19.1 169 51.3 34.7 148
Fisher Creek 9100 41.9 28.9 145 53.8 39.8 135
Northeast Entrance 7350 .0 .0 * 23.8 16.5 144
Parker Peak 9400 29.6 15.1 196 41.6 23.6 176
Sylvan Lake 8420 10.3 8.6 120 43.6 29.1 150
Thumb Divide 7980 .3 .0 * 31.5 23.7 133
Two Ocean Plateau 9240 -M 26.0 * -M 34.2 *
White Mill 8700 26.9 18.3 147 40.7 30.2 135
Wolverine 7650 -M .0 * 24.8 16.4 151
----- -----
Basin Index (%) 154 139
WIND RIVER
Burroughs Creek 8750 .0 -M * 30.2 -M *
Castle Creek 8400 .0 -M * 19.3 -M *
Cold Springs 9630 1.3 .0 * 24.9 15.2 164
Deer Park 9700 30.7 4.6 667 48.1 26.9 179
Hobbs Park 10100 30.5 7.3 418 38.7 20.3 191
Kirwin 9550 16.0 2.8 571 31.5 16.8 188
Little Warm 9370 8.0 .0 * 28.3 18.2 155
Owl Creek 8975 .0 .0 * 17.5 10.5 167
South Pass 9040 27.8 .5 5560* 38.2 23.4 163
St. Lawrence Alt 8620 .0 .0 * 23.5 14.3 164
Togwotee Pass 9580 29.5 20.0 148 44.9 30.8 146
Townsend Creek 8700 9.7 .0 * 32.0 18.0 178
----- -----
Basin Index (%) 436* 169
BIGHORN BASIN
Bald Mtn. 9380 19.2 14.8 130 23.7 23.3 102
Bear Trap Meadow 8200 .0 .0 * 17.3 13.7 126
Bone Springs Div 9350 15.1 10.1 150 23.8 22.0 108
Grave Springs 8550 .0 .0 * 15.9 16.0 99
Kirwin 9550 16.0 2.8 571 31.5 16.8 188
Marquette 8760 12.7 -M * 26.7 -M *
Middle Powder 7760 .0 .0 * 16.1 17.2 94
Owl Creek 8975 .0 .0 * 17.5 10.5 167
Powder River Pass 9480 .0 .0 * 19.5 18.5 105
Shell Creek 9580 12.5 10.4 120 19.8 19.7 101
Timber Creek 7950 .0 .0 * 19.1 13.3 144
----- -----
Basin Index (%) 165* 119
SHOSHONE RIVER
Blackwater 9780 35.7 21.0 170 48.5 27.2 178
Evening Star 9200 32.3 19.1 169 51.3 34.7 148
Marquette 8760 12.7 -M * 26.7 -M *
Sylvan Road 7120 .0 .0 * 33.3 21.2 157
Younts Peak 8350 .0 5.2 0 35.0 20.5 171
----- -----
Basin Index (%) 150 162
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * 17.3 13.7 126
Cloud Peak Reservoir 9860 16.5 7.4 223 29.0 21.0 138
Grave Springs 8550 .0 .0 * 15.9 16.0 99
Hansen Sawmill 8360 1.4 .0 * 21.2 14.0 151
Middle Powder 7760 .0 .0 * 16.1 17.2 94
Powder River Pass 9480 .0 .0 * 19.5 18.5 105
Soldier Park 8720 3.3 -M * 23.0 -M *
----- -----
Basin Index (%) 242* 119
TONGUE RIVER
Big Goose 7990 4.5 .0 * 21.8 18.1 120
Bone Springs Div 9350 15.1 10.1 150 23.8 22.0 108
Burgess Junction 7880 2.0 .4 500* 18.6 17.9 104
Dome Lake 8880 11.2 .0 * 25.3 20.1 126
Little Goose 8870 8.9 -M * 26.3 -M *
Sucker Creek 8880 7.8 1.5 520 21.4 21.3 100
Tie Creek 6870 .0 .0 * 24.8 18.5 134
----- -----
Basin Index (%) 338* 115
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * 14.3 16.2 88
----- -----
Basin Index (%) * 88
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 15.1 18.1 83
North Rapid Creek 6130 .0 .0 * 13.2 15.7 84
----- -----
Basin Index (%) * 84
UPPER N. PLATTE
Arapaho Ridge 10960 20.2 9.3 217 33.5 29.1 115
Blackhall Mtn 9820 28.0 -M * 45.2 -M *
Columbine 9160 .0 .0 * 35.4 31.4 113
Divide Peak 8880 .0 .0 * 28.5 27.3 104
Joe Wright 10120 14.7 15.1 97 38.1 34.1 112
Laprele Creek 8375 .2 .0 * 18.3 17.8 103
Med Bow 10500 35.7 -M * 44.2 -M *
North French Creek 10130 22.3 22.2 100 36.8 34.9 105
Never Summer 10280 22.8 16.2 141 26.2 -M *
Old Battle 10000 37.2 25.6 145 46.7 43.3 108
Rawah 9020 .2 .0 * 23.1 19.4 119
Sage Creek Basin 7850 -M .0 * 19.6 17.8 110
Sand Lake 10050 30.8 21.5 143 35.8 32.9 109
South Brush Creek 8440 .0 .0 * 17.6 20.9 84
Tower 10500 40.6 38.7 105 56.3 49.0 115
Webber Springs 9250 8.5 .4 2125* 40.5 32.9 123
Willow Creek Pass 9540 9.8 .9 1089* 23.7 18.3 130
Zirkel 9340 4.1 .0 * 50.6 33.9 149
----- -----
Basin Index (%) 141* 114
SWEETWATER
Deer Park 9700 30.7 4.6 667 48.1 26.9 179
Larsen Creek 9000 .2 .6 33* 28.4 -M *
South Pass 9040 27.8 .5 5560* 38.2 23.4 163
----- -----
Basin Index (%) 1030* 172
LOWER N. PLATTE
Casper Mtn. 7900 .3 .0 * 22.4 21.5 104
Laprele Creek 8375 .2 .0 * 18.3 17.8 103
Reno Hill 8400 .1 .0 * 22.7 22.5 101
Windy Peak 7900 .0 .0 * 18.8 15.9 118
----- -----
Basin Index (%) * 106
LARAMIE RIVER
Brooklyn Lake 10240 9.5 6.9 138 29.9 28.2 106
Cinnabar Park 9574 2.9 2.8 104 29.5 30.1 98
Crow Creek 8330 .0 .0 * 16.1 15.9 101
Deadman Hill 10220 16.8 9.5 177 30.1 23.8 126
Rawah 9020 .2 .0 * 23.1 19.4 119
Roach 9700 6.1 3.1 197 29.0 25.5 114
----- -----
Basin Index (%) 159 110
S. PLATTE
Black Mountain 8920 -M -M * 21.2 -M *
Crow Creek 8330 .0 .0 * 16.1 15.9 101
Deadman Hill 10220 16.8 9.5 177 30.1 23.8 126
----- -----
Basin Index (%) 177* 116
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 .0 * 20.9 19.1 109
Divide Peak 8880 .0 .0 * 28.5 27.3 104
Elk River 8700 .1 .0 * 25.2 25.3 100
Little Snake River 8915 7.7 3.3 233 45.7 36.0 127
Old Battle 10000 37.2 25.6 145 46.7 43.3 108
Sage Creek Basin 7850 -M .0 * 19.6 17.8 110
Sandstone RS 8150 .0 .0 * 20.1 23.1 87
Whiskey Park 8950 11.8 8.8 134 37.8 34.7 109
----- -----
Basin Index (%) 151* 108
UPPER GREEN RIVER
Big Sandy Opening 9080 7.0 .0 * 27.5 17.7 155
Blind Bull Sum 8650 -M 13.2 * 40.0 24.2 165
East Rim Divide 7930 .1 .0 * 23.7 14.9 159
Elkhart Park G.S. 9400 6.4 .5 1280* 27.7 17.7 156
Gros Ventre Summit 8750 8.1 .0 * 27.3 16.9 162
Gunsight Pass 9820 17.2 4.0 430 30.1 18.5 163
Kendall R.S. 7740 .0 .0 * 31.8 17.5 182
Loomis Park 8240 6.8 .0 * 35.6 21.3 167
New Fork Lake 8340 -M .0 * 22.5 14.4 156
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 .0 .0 * 30.2 17.4 174
Spring Creek Divide 9000 31.2 13.0 240 46.6 29.0 161
Triple Peak 8500 15.7 .0 * 46.4 31.4 148
----- -----
Basin Index (%) 529* 162
LOWER GREEN RIVER
Blacks Fork Jct 8869 .0 -M * 19.8 -M *
Buck Pasture 9632 .0 -M * 28.9 -M *
EF Blacks Fork GS 9360 .0 -M * 24.1 -M *
Hams Fork 7840 .1 .0 * 25.0 15.1 166
Hewinta 9500 .0 .0 * 22.4 18.4 122
Hickerson Park 9122 .0 .0 * 16.3 14.2 115
Hole-in-Rock 9168 .0 .0 * 17.2 13.8 125
Indian Creek 9425 28.4 11.9 239 47.1 27.9 169
Kelley R.S. 8180 -M .0 * 35.7 22.7 157
Spirit Lk 10235 .0 -M * 22.6 -M *
Steel Creek Park 10158 12.8 10.1 127 26.9 21.9 123
----- -----
Basin Index (%) 188* 142
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 22.3 -M *
Bug Lake 7987 9.0 .0 * 39.2 24.3 161
Burts Miller Ranch 8000 .0 -M * 12.4 -M *
Chalk Creek #1 9171 14.1 7.4 191 42.6 31.8 134
Hayden Fork 9130 .0 .0 * 33.3 26.6 125
Kelley R.S. 8180 -M .0 * 35.7 22.7 157
Lily Lake 9133 .0 .0 * 24.1 22.2 109
Monte Cristo 8932 18.8 5.6 336 46.5 32.6 143
Salt River Summit 7760 .0 .0 * 32.9 20.7 159
----- -----
Basin Index (%) 322* 141
-----------------------------------------------------------------------------
-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.
----------------------------------------------------------------------------
-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.