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: MARCH 12 , 2017
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7030 26.5 13.8 192 36.8 18.3 201
Black Bear 8170 42.5 31.6 134 48.6 33.3 146
Blind Bull Sum 8650 40.4 19.6 206 -M 17.0 *
Cottonwood Creek 7670 26.7 18.6 144 34.2 20.9 164
East Rim Divide 7930 18.6 9.5 196 19.7 10.2 193
Grand Targhee 9260 39.9 32.1 124 34.8 25.7 135
Granite Creek 6770 30.1 14.7 205 34.2 17.6 194
Grassy Lake 7265 35.6 27.7 129 49.3 31.4 157
Gros Ventre Summit 8750 -M 10.9 * -M 11.0 *
Gunsight Pass 9820 19.5 11.6 168 22.0 11.7 188
Lewis Lake Divide 7850 38.2 26.7 143 -M 30.9 *
Phillips Bench 8200 34.7 21.4 162 -M 24.3 *
Salt River Summit 7760 20.4 11.3 181 -M 14.3 *
Snake River Station 6920 21.3 15.2 140 32.5 19.7 165
Spring Creek Divide 9000 36.3 19.7 184 -M 20.5 *
Thumb Divide 7980 21.9 13.3 165 22.9 15.8 145
Togwotee Pass 9580 30.2 19.6 154 34.2 20.8 164
Two Ocean Plateau 9240 -M 23.2 * -M 23.4 *
Willow Creek 8380 30.1 24.2 124 44.7 28.7 156
Younts Peak 8350 26.4 12.4 213 28.4 13.5 210
----- -----
Basin Index (%) 157 165
MADISON-GALLATIN
Black Bear 8170 42.5 31.6 134 48.6 33.3 146
Canyon 7870 16.9 11.5 147 23.2 14.0 166
Madison Plateau 7750 25.1 19.4 129 32.5 22.9 142
West Yellowstone 6700 12.4 9.8 127 20.9 12.4 169
Whiskey Creek 6800 15.0 13.3 113 24.0 17.5 137
----- -----
Basin Index (%) 131 149
YELLOWSTONE
Beartooth Lake 9360 29.1 18.4 158 24.5 16.9 145
Burnt Mtn 5880 5.9 4.3 137 12.0 10.2 118
Canyon 7870 16.9 11.5 147 23.2 14.0 166
Cole Creek 7850 9.3 11.3 82 6.6 10.0 66
Evening Star 9200 34.8 21.1 165 34.9 23.5 149
Fisher Creek 9100 38.3 27.2 141 41.5 27.4 151
Northeast Entrance 7350 11.8 8.7 136 17.8 10.5 170
Parker Peak 9400 29.7 16.8 177 -M 15.0 *
Sylvan Lake 8420 22.3 17.1 130 33.7 19.1 176
Thumb Divide 7980 21.9 13.3 165 22.9 15.8 145
Two Ocean Plateau 9240 -M 23.2 * -M 23.4 *
White Mill 8700 30.6 19.3 159 31.5 20.3 155
Wolverine 7650 14.0 9.0 156 19.2 10.5 183
----- -----
Basin Index (%) 149 150
WIND RIVER
Burroughs Creek 8750 23.6 -M * 24.9 -M *
Castle Creek 8400 12.0 -M * 14.3 -M *
Cold Springs 9630 12.3 6.0 205 14.9 8.1 184
Deer Park 9700 28.3 12.2 232 32.1 16.3 197
Hobbs Park 10100 22.4 11.0 204 20.4 10.4 196
Kirwin 9550 17.8 7.9 225 20.5 9.4 218
Little Warm 9370 15.5 8.8 176 21.1 10.6 199
Owl Creek 8975 7.0 4.4 159 8.8 4.6 191
South Pass 9040 26.2 12.6 208 23.6 14.6 162
St. Lawrence Alt 8620 6.9 5.9 117 12.0 7.1 169
Togwotee Pass 9580 30.2 19.6 154 34.2 20.8 164
Townsend Creek 8700 12.4 7.4 168 15.8 9.4 168
----- -----
Basin Index (%) 187 183
BIGHORN BASIN
Bald Mtn. 9380 16.4 16.0 102 14.3 14.0 102
Bear Trap Meadow 8200 5.0 4.7 106 6.1 6.6 92
Bone Springs Div 9350 14.9 13.3 112 14.3 12.6 113
Grave Springs 8550 5.8 7.5 77 6.2 8.4 74
Kirwin 9550 17.8 7.9 225 20.5 9.4 218
Marquette 8760 7.6 -M * 11.8 -M *
Middle Powder 7760 6.6 8.9 74 6.2 9.4 66
Owl Creek 8975 7.0 4.4 159 8.8 4.6 191
Powder River Pass 9480 6.8 8.6 79 10.0 10.2 98
Shell Creek 9580 14.0 12.3 114 11.0 11.2 98
Timber Creek 7950 5.4 4.1 132 6.8 5.6 121
----- -----
Basin Index (%) 114 113
SHOSHONE RIVER
Blackwater 9780 34.2 19.2 178 37.5 17.3 217
Evening Star 9200 34.8 21.1 165 34.9 23.5 149
Marquette 8760 7.6 -M * 11.8 -M *
Sylvan Road 7120 15.1 10.0 151 27.8 14.6 190
Younts Peak 8350 26.4 12.4 213 28.4 13.5 210
----- -----
Basin Index (%) 176 187
POWDER RIVER
Bear Trap Meadow 8200 5.0 4.7 106 6.1 6.6 92
Cloud Peak Reservoir 9860 11.2 11.9 94 12.5 10.4 120
Grave Springs 8550 5.8 7.5 77 6.2 8.4 74
Hansen Sawmill 8360 7.3 5.2 140 9.2 6.6 139
Middle Powder 7760 6.6 8.9 74 6.2 9.4 66
Powder River Pass 9480 6.8 8.6 79 10.0 10.2 98
Soldier Park 8720 11.2 -M * 9.0 -M *
----- -----
Basin Index (%) 91 97
TONGUE RIVER
Big Goose 7990 8.3 7.0 119 9.2 8.5 108
Bone Springs Div 9350 14.9 13.3 112 14.3 12.6 113
Burgess Junction 7880 8.2 9.3 88 8.9 9.8 91
Dome Lake 8880 12.1 9.4 129 11.8 10.7 110
Little Goose 8870 9.0 -M * 11.5 -M *
Sucker Creek 8880 9.8 10.2 96 9.5 11.4 83
Tie Creek 6870 5.6 4.7 119 9.7 9.0 108
----- -----
Basin Index (%) 109 102
BELLE FOURCHE
Cole Canyon 5910 2.8 5.1 55 6.0 7.4 81
----- -----
Basin Index (%) 55 81
CHEYENNE RIVER BASIN
Blind Park 6890 4.3 6.9 62 7.1 10.1 70
North Rapid Creek 6130 4.9 6.3 78 6.0 8.1 74
----- -----
Basin Index (%) 70 72
UPPER N. PLATTE
Arapaho Ridge 10960 23.5 17.8 132 23.5 18.9 124
Blackhall Mtn 9820 34.8 -M * 33.7 -M *
Columbine 9160 24.0 21.2 113 25.8 21.9 118
Divide Peak 8880 18.9 17.0 111 20.9 18.1 115
Joe Wright 10120 18.0 18.5 97 25.6 21.6 119
Laprele Creek 8375 11.3 8.6 131 10.3 10.2 101
Med Bow 10500 36.2 -M * 31.1 -M *
North French Creek 10130 24.2 23.3 104 24.8 22.6 110
Never Summer 10280 21.3 17.1 125 17.2 -M *
Old Battle 10000 35.3 25.7 137 36.1 30.0 120
Rawah 9020 11.6 9.3 125 15.0 11.6 129
Sage Creek Basin 7850 15.2 11.7 130 15.2 12.5 122
Sand Lake 10050 27.9 22.8 122 25.4 20.5 124
South Brush Creek 8440 10.8 11.2 96 11.3 12.6 90
Tower 10500 39.7 38.4 103 41.6 34.1 122
Webber Springs 9250 28.3 20.2 140 31.5 22.8 138
Willow Creek Pass 9540 16.3 10.3 158 17.1 11.1 154
Zirkel 9340 40.1 25.3 158 39.9 24.7 162
----- -----
Basin Index (%) 123 124
SWEETWATER
Deer Park 9700 28.3 12.2 232 32.1 16.3 197
Larsen Creek 9000 19.7 10.5 188 21.0 -M *
South Pass 9040 26.2 12.6 208 23.6 14.6 162
----- -----
Basin Index (%) 210 180
LOWER N. PLATTE
Casper Mtn. 7900 11.0 11.6 95 10.3 12.1 85
Laprele Creek 8375 11.3 8.6 131 10.3 10.2 101
Reno Hill 8400 11.0 11.3 97 11.5 12.2 94
Windy Peak 7900 9.9 6.6 150 9.9 8.6 115
----- -----
Basin Index (%) 113 97
LARAMIE RIVER
Brooklyn Lake 10240 23.7 17.0 139 21.2 17.5 121
Cinnabar Park 9574 18.2 17.8 102 20.5 20.7 99
Crow Creek 8330 5.1 7.1 72 7.9 8.5 93
Deadman Hill 10220 19.2 13.1 147 18.1 14.1 128
Rawah 9020 11.6 9.3 125 15.0 11.6 129
Roach 9700 15.5 13.5 115 18.3 16.0 114
----- -----
Basin Index (%) 120 114
S. PLATTE
Black Mountain 8920 9.4 -M * 10.5 -M *
Crow Creek 8330 5.1 7.1 72 7.9 8.5 93
Deadman Hill 10220 19.2 13.1 147 18.1 14.1 128
----- -----
Basin Index (%) 120 115
LITTLE SNAKE RIVER
Battle Mountain 7440 10.2 10.7 95 15.6 13.0 120
Divide Peak 8880 18.9 17.0 111 20.9 18.1 115
Elk River 8700 20.4 17.0 120 19.1 17.2 111
Little Snake River 8915 31.4 20.3 155 36.6 26.0 141
Old Battle 10000 35.3 25.7 137 36.1 30.0 120
Sage Creek Basin 7850 15.2 11.7 130 15.2 12.5 122
Sandstone RS 8150 12.7 11.8 108 15.2 16.0 95
Whiskey Park 8950 27.5 23.5 117 28.3 24.0 118
----- -----
Basin Index (%) 125 119
UPPER GREEN RIVER
Big Sandy Opening 9080 19.9 10.8 184 21.7 11.3 192
Blind Bull Sum 8650 40.4 19.6 206 -M 17.0 *
East Rim Divide 7930 18.6 9.5 196 19.7 10.2 193
Elkhart Park G.S. 9400 17.8 10.2 175 22.0 11.3 195
Gros Ventre Summit 8750 -M 10.9 * -M 11.0 *
Gunsight Pass 9820 19.5 11.6 168 22.0 11.7 188
Kendall R.S. 7740 23.3 10.6 220 27.2 12.5 218
Loomis Park 8240 26.9 12.8 210 30.3 15.0 202
New Fork Lake 8340 16.4 9.1 180 16.2 9.4 172
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 19.5 10.7 182 25.3 12.2 207
Spring Creek Divide 9000 36.3 19.7 184 -M 20.5 *
Triple Peak 8500 35.2 18.7 188 37.4 21.6 173
----- -----
Basin Index (%) 191 193
LOWER GREEN RIVER
Blacks Fork Jct 8869 10.3 -M * 13.6 -M *
Buck Pasture 9632 18.7 -M * 20.6 -M *
EF Blacks Fork GS 9360 15.4 -M * 11.8 -M *
Hams Fork 7840 17.2 10.0 172 18.3 9.7 189
Hewinta 9500 11.9 8.7 137 14.2 11.6 122
Hickerson Park 9122 8.1 6.5 125 8.4 8.2 102
Hole-in-Rock 9168 6.4 6.2 103 9.1 7.7 118
Indian Creek 9425 36.8 20.4 180 -M 19.1 *
Kelley R.S. 8180 24.1 12.8 188 28.3 15.5 183
Spirit Lk 10235 13.8 -M * 14.7 -M *
Steel Creek Park 10158 15.2 12.7 120 17.2 13.4 128
----- -----
Basin Index (%) 155 144
UPPER BEAR RIVER
Bear River RS 8777 12.4 -M * 15.4 -M *
Bug Lake 7987 30.4 16.3 187 30.0 16.6 181
Burts Miller Ranch 8000 7.0 -M * 8.3 -M *
Chalk Creek #1 9171 31.5 20.2 156 32.1 21.0 153
Hayden Fork 9130 22.9 13.6 168 -M 17.6 *
Kelley R.S. 8180 24.1 12.8 188 28.3 15.5 183
Lily Lake 9133 14.6 11.2 130 16.9 14.3 118
Monte Cristo 8932 33.5 23.0 146 34.6 22.0 157
Salt River Summit 7760 20.4 11.3 181 -M 14.3 *
----- -----
Basin Index (%) 164 159
-----------------------------------------------------------------------------
-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.