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: APRIL 29 , 2017
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7030 21.1 10.0 211 42.1 22.6 186
Black Bear 8170 51.9 37.3 139 59.7 41.4 144
Blind Bull Sum 8650 -M 23.7 * 38.7 21.1 183
Cottonwood Creek 7670 30.0 16.0 188 43.5 27.1 161
East Rim Divide 7930 11.1 8.4 132 22.4 12.7 176
Grand Targhee 9260 57.6 44.1 131 50.9 34.1 149
Granite Creek 6770 22.3 8.6 259 38.1 21.1 181
Grassy Lake 7265 39.5 29.7 133 61.1 38.9 157
Gros Ventre Summit 8750 21.7 11.8 184 26.4 14.4 183
Gunsight Pass 9820 -M 13.0 * 28.1 15.9 177
Lewis Lake Divide 7850 48.3 30.4 159 59.4 38.2 155
Phillips Bench 8200 41.7 25.6 163 50.5 30.3 167
Salt River Summit 7760 18.0 8.1 222 -M 18.2 *
Snake River Station 6920 14.4 8.4 171 39.0 24.5 159
Spring Creek Divide 9000 44.4 24.3 183 43.8 25.9 169
Thumb Divide 7980 20.4 13.3 153 30.5 20.7 147
Togwotee Pass 9580 36.9 24.7 149 42.7 27.0 158
Two Ocean Plateau 9240 -M 29.6 * -M 29.8 *
Willow Creek 8380 29.4 24.1 122 57.2 37.1 154
Younts Peak 8350 24.1 15.3 158 33.0 17.4 190
----- -----
Basin Index (%) 157 163
MADISON-GALLATIN
Black Bear 8170 51.9 37.3 139 59.7 41.4 144
Canyon 7870 18.8 11.0 171 28.6 17.8 161
Madison Plateau 7750 29.8 21.9 136 40.0 28.7 139
West Yellowstone 6700 .7 3.1 23 26.0 15.8 165
Whiskey Creek 6800 12.7 15.1 84 29.6 22.1 134
----- -----
Basin Index (%) 129 146
YELLOWSTONE
Beartooth Lake 9360 35.8 23.1 155 30.8 21.7 142
Burnt Mtn 5880 1.1 .0 * 18.4 15.4 119
Canyon 7870 18.8 11.0 171 28.6 17.8 161
Cole Creek 7850 17.1 16.4 104 14.0 16.0 88
Evening Star 9200 41.2 24.8 166 48.6 30.1 161
Fisher Creek 9100 47.5 33.0 144 51.7 34.8 149
Northeast Entrance 7350 3.2 4.0 80 22.7 13.6 167
Parker Peak 9400 42.3 21.5 197 39.4 19.8 199
Sylvan Lake 8420 27.0 20.2 134 41.8 24.7 169
Thumb Divide 7980 20.4 13.3 153 30.5 20.7 147
Two Ocean Plateau 9240 -M 29.6 * -M 29.8 *
White Mill 8700 40.4 23.8 170 39.2 26.0 151
Wolverine 7650 3.1 3.6 86 23.4 13.6 172
----- -----
Basin Index (%) 153 153
WIND RIVER
Burroughs Creek 8750 20.5 -M * 28.8 -M *
Castle Creek 8400 8.0 -M * 17.3 -M *
Cold Springs 9630 16.2 1.7 953 21.9 12.1 181
Deer Park 9700 37.2 16.2 230 41.9 23.1 181
Hobbs Park 10100 34.8 15.9 219 31.6 16.4 193
Kirwin 9550 26.0 10.3 252 28.7 13.5 213
Little Warm 9370 19.3 9.0 214 26.7 15.1 177
Owl Creek 8975 9.2 1.4 657 15.2 7.7 197
South Pass 9040 34.3 15.1 227 33.2 20.1 165
St. Lawrence Alt 8620 -M 3.4 * 20.6 11.3 182
Togwotee Pass 9580 36.9 24.7 149 42.7 27.0 158
Townsend Creek 8700 20.0 8.0 250 27.4 14.7 186
----- -----
Basin Index (%) 229 180
BIGHORN BASIN
Bald Mtn. 9380 24.0 20.5 117 20.4 19.4 105
Bear Trap Meadow 8200 7.2 1.3 554 14.5 10.3 141
Bone Springs Div 9350 23.3 16.5 141 20.6 17.9 115
Grave Springs 8550 11.2 9.3 120 13.3 12.5 106
Kirwin 9550 26.0 10.3 252 28.7 13.5 213
Marquette 8760 -M -M * 23.5 -M *
Middle Powder 7760 13.1 11.9 110 13.5 13.9 97
Owl Creek 8975 9.2 1.4 657 15.2 7.7 197
Powder River Pass 9480 11.9 9.7 123 17.7 14.8 120
Shell Creek 9580 20.1 16.0 126 17.7 16.0 111
Timber Creek 7950 8.4 3.4 247 15.0 9.7 155
----- -----
Basin Index (%) 154 130
SHOSHONE RIVER
Blackwater 9780 41.9 25.0 168 46.2 23.1 200
Evening Star 9200 41.2 24.8 166 48.6 30.1 161
Marquette 8760 -M -M * 23.5 -M *
Sylvan Road 7120 .0 6.7 0 32.5 18.4 177
Younts Peak 8350 24.1 15.3 158 33.0 17.4 190
----- -----
Basin Index (%) 149 180
POWDER RIVER
Bear Trap Meadow 8200 7.2 1.3 554 14.5 10.3 141
Cloud Peak Reservoir 9860 21.6 16.5 131 25.6 16.2 158
Grave Springs 8550 11.2 9.3 120 13.3 12.5 106
Hansen Sawmill 8360 16.0 3.3 485 19.0 10.6 179
Middle Powder 7760 13.1 11.9 110 13.5 13.9 97
Powder River Pass 9480 11.9 9.7 123 17.7 14.8 120
Soldier Park 8720 18.3 -M * 20.2 -M *
----- -----
Basin Index (%) 156 132
TONGUE RIVER
Big Goose 7990 15.0 9.2 163 19.2 13.7 140
Bone Springs Div 9350 23.3 16.5 141 20.6 17.9 115
Burgess Junction 7880 13.1 12.1 108 15.3 14.5 106
Dome Lake 8880 19.3 11.6 166 21.3 16.1 132
Little Goose 8870 18.9 -M * 23.6 -M *
Sucker Creek 8880 16.2 12.4 131 18.3 17.0 108
Tie Creek 6870 4.3 2.8 154 19.2 13.9 138
----- -----
Basin Index (%) 141 122
BELLE FOURCHE
Cole Canyon 5910 1.7 .3 567* 11.7 11.5 102
----- -----
Basin Index (%) 567* 102
CHEYENNE RIVER BASIN
Blind Park 6890 .0 1.8 0 10.8 14.0 77
North Rapid Creek 6130 .0 1.8 0 9.6 11.9 81
----- -----
Basin Index (%) 0 79
UPPER N. PLATTE
Arapaho Ridge 10960 26.1 22.3 117 29.2 25.9 113
Blackhall Mtn 9820 36.7 -M * 41.6 -M *
Columbine 9160 12.7 19.1 66 30.9 28.2 110
Divide Peak 8880 12.1 18.0 67 25.6 24.0 107
Joe Wright 10120 18.5 23.5 79 32.4 29.5 110
Laprele Creek 8375 6.4 6.7 96 14.5 14.8 98
Med Bow 10500 39.4 -M * 39.9 -M *
North French Creek 10130 27.6 33.0 84 32.6 30.4 107
Never Summer 10280 24.7 21.6 114 22.3 -M *
Old Battle 10000 40.0 34.6 116 42.3 38.8 109
Rawah 9020 5.8 7.0 83 20.0 17.0 118
Sage Creek Basin 7850 -M 1.2 * 17.9 16.0 112
Sand Lake 10050 32.3 31.3 103 31.1 28.7 108
South Brush Creek 8440 .5 9.8 5 14.8 17.6 84
Tower 10500 44.1 49.8 89 49.5 44.3 112
Webber Springs 9250 23.0 22.0 105 36.7 29.7 124
Willow Creek Pass 9540 19.0 13.9 137 20.3 15.5 131
Zirkel 9340 24.3 21.4 114 46.1 30.7 150
----- -----
Basin Index (%) 95 114
SWEETWATER
Deer Park 9700 37.2 16.2 230 41.9 23.1 181
Larsen Creek 9000 13.4 9.4 143 25.9 -M *
South Pass 9040 34.3 15.1 227 33.2 20.1 165
----- -----
Basin Index (%) 209 174
LOWER N. PLATTE
Casper Mtn. 7900 12.7 14.0 91 18.1 17.7 102
Laprele Creek 8375 6.4 6.7 96 14.5 14.8 98
Reno Hill 8400 13.0 13.1 99 17.8 18.6 96
Windy Peak 7900 4.1 4.7 87 13.6 12.8 106
----- -----
Basin Index (%) 94 100
LARAMIE RIVER
Brooklyn Lake 10240 20.7 23.2 89 25.5 24.4 105
Cinnabar Park 9574 14.1 19.9 71 25.9 26.8 97
Crow Creek 8330 .2 .0 * 11.9 13.3 89
Deadman Hill 10220 21.8 18.8 116 23.9 20.4 117
Rawah 9020 5.8 7.0 83 20.0 17.0 118
Roach 9700 16.1 17.3 93 24.5 22.0 111
----- -----
Basin Index (%) 91 106
S. PLATTE
Black Mountain 8920 8.4 -M * 15.8 -M *
Crow Creek 8330 .2 .0 * 11.9 13.3 89
Deadman Hill 10220 21.8 18.8 116 23.9 20.4 117
----- -----
Basin Index (%) 117* 106
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 .0 * 19.4 17.0 114
Divide Peak 8880 12.1 18.0 67 25.6 24.0 107
Elk River 8700 6.0 13.8 43 23.2 22.4 104
Little Snake River 8915 23.3 22.7 103 42.8 32.4 132
Old Battle 10000 40.0 34.6 116 42.3 38.8 109
Sage Creek Basin 7850 -M 1.2 * 17.9 16.0 112
Sandstone RS 8150 .0 6.7 0 18.3 20.6 89
Whiskey Park 8950 24.3 26.1 93 34.7 31.1 112
----- -----
Basin Index (%) 87 111
UPPER GREEN RIVER
Big Sandy Opening 9080 23.0 11.3 204 25.6 15.0 171
Blind Bull Sum 8650 -M 23.7 * 38.7 21.1 183
East Rim Divide 7930 11.1 8.4 132 22.4 12.7 176
Elkhart Park G.S. 9400 20.9 11.6 180 26.2 14.8 177
Gros Ventre Summit 8750 21.7 11.8 184 26.4 14.4 183
Gunsight Pass 9820 -M 13.0 * 28.1 15.9 177
Kendall R.S. 7740 15.5 5.2 298 30.6 15.4 199
Loomis Park 8240 24.7 11.3 219 34.2 18.7 183
New Fork Lake 8340 13.0 6.8 191 19.3 11.9 162
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 15.8 9.7 163 28.8 15.4 187
Spring Creek Divide 9000 44.4 24.3 183 43.8 25.9 169
Triple Peak 8500 36.6 18.2 201 44.3 27.6 161
----- -----
Basin Index (%) 191 176
LOWER GREEN RIVER
Blacks Fork Jct 8869 5.6 -M * 18.8 -M *
Buck Pasture 9632 16.8 -M * 27.2 -M *
EF Blacks Fork GS 9360 13.2 -M * 21.3 -M *
Hams Fork 7840 10.1 3.7 273 23.7 12.9 184
Hewinta 9500 8.0 5.3 151 20.8 15.9 131
Hickerson Park 9122 4.7 4.7 100 14.8 11.8 125
Hole-in-Rock 9168 5.3 3.3 161 15.5 11.3 137
Indian Creek 9425 43.8 23.5 186 44.7 24.7 181
Kelley R.S. 8180 24.5 11.8 208 33.6 19.9 169
Spirit Lk 10235 15.3 -M * 20.5 -M *
Steel Creek Park 10158 22.6 16.9 134 25.1 18.8 134
----- -----
Basin Index (%) 172 155
UPPER BEAR RIVER
Bear River RS 8777 2.0 -M * 21.4 -M *
Bug Lake 7987 33.6 15.7 214 37.6 21.4 176
Burts Miller Ranch 8000 .5 -M * 11.8 -M *
Chalk Creek #1 9171 34.5 24.6 140 40.9 28.1 146
Hayden Fork 9130 15.3 9.7 158 33.7 23.5 143
Kelley R.S. 8180 24.5 11.8 208 33.6 19.9 169
Lily Lake 9133 13.1 9.8 134 23.0 19.3 119
Monte Cristo 8932 38.7 27.1 143 44.0 28.9 152
Salt River Summit 7760 18.0 8.1 222 -M 18.2 *
----- -----
Basin Index (%) 166 151
-----------------------------------------------------------------------------
-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.