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 WEDNESDAY: MAY 24 , 2017
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7030 4.6 .0 * 43.2 24.9 173
Black Bear 8170 44.0 31.8 138 61.7 45.2 137
Blind Bull Sum 8650 -M 17.6 * 39.7 23.7 168
Cottonwood Creek 7670 14.9 2.4 621 45.2 30.5 148
East Rim Divide 7930 .1 .0 * 23.5 14.5 162
Grand Targhee 9260 55.4 41.3 134 53.0 37.6 141
Granite Creek 6770 2.2 .0 * 38.7 23.3 166
Grassy Lake 7265 21.6 13.2 164 62.5 42.5 147
Gros Ventre Summit 8750 -M 2.8 * -M 16.4 *
Gunsight Pass 9820 19.5 8.0 244 29.6 18.0 164
Lewis Lake Divide 7850 32.4 19.4 167 60.2 41.5 145
Phillips Bench 8200 28.9 16.0 181 51.4 33.3 154
Salt River Summit 7760 .1 .0 * 32.6 20.2 161
Snake River Station 6920 .0 .0 * 39.6 27.0 147
Spring Creek Divide 9000 37.0 17.5 211 45.8 28.5 161
Thumb Divide 7980 1.0 .0 * 31.2 23.1 135
Togwotee Pass 9580 31.8 22.6 141 44.5 30.1 148
Two Ocean Plateau 9240 -M 27.7 * -M 33.4 *
Willow Creek 8380 -M 12.4 * 59.4 41.5 143
Younts Peak 8350 .0 10.2 0 34.0 20.0 170
----- -----
Basin Index (%) 161 151
MADISON-GALLATIN
Black Bear 8170 44.0 31.8 138 61.7 45.2 137
Canyon 7870 5.4 .4 1350* 29.8 20.2 148
Madison Plateau 7750 16.9 12.4 136 41.4 32.1 129
West Yellowstone 6700 .0 .0 * 26.8 17.9 150
Whiskey Creek 6800 1.3 3.1 42 31.1 24.7 126
----- -----
Basin Index (%) 142 136
YELLOWSTONE
Beartooth Lake 9360 33.0 20.6 160 33.1 24.5 135
Burnt Mtn 5880 .0 .0 * 23.6 19.8 119
Canyon 7870 5.4 .4 1350* 29.8 20.2 148
Cole Creek 7850 15.3 14.2 108 19.3 20.1 96
Evening Star 9200 34.8 22.2 157 50.9 33.9 150
Fisher Creek 9100 46.4 31.6 147 53.6 38.9 138
Northeast Entrance 7350 .0 .0 * 23.9 15.9 150
Parker Peak 9400 33.9 18.9 179 41.5 22.9 181
Sylvan Lake 8420 14.7 13.2 111 43.5 28.2 154
Thumb Divide 7980 1.0 .0 * 31.2 23.1 135
Two Ocean Plateau 9240 -M 27.7 * -M 33.4 *
White Mill 8700 30.8 21.2 145 40.7 29.4 138
Wolverine 7650 -M .0 * 24.9 15.8 158
----- -----
Basin Index (%) 151 142
WIND RIVER
Burroughs Creek 8750 5.8 -M * 29.9 -M *
Castle Creek 8400 .0 -M * 18.6 -M *
Cold Springs 9630 5.9 .0 * 24.5 14.7 167
Deer Park 9700 31.5 8.6 366 46.5 26.4 176
Hobbs Park 10100 32.2 11.3 285 37.7 19.7 191
Kirwin 9550 19.1 6.5 294 30.8 16.3 189
Little Warm 9370 10.4 .6 1733* 28.1 17.8 158
Owl Creek 8975 .0 .0 * 17.1 10.0 171
South Pass 9040 28.1 3.3 852 36.6 22.8 161
St. Lawrence Alt 8620 .5 .0 * 22.8 13.8 165
Togwotee Pass 9580 31.8 22.6 141 44.5 30.1 148
Townsend Creek 8700 12.9 .0 * 31.2 17.5 178
----- -----
Basin Index (%) 326* 169
BIGHORN BASIN
Bald Mtn. 9380 20.6 17.6 117 23.2 22.6 103
Bear Trap Meadow 8200 .0 .0 * 17.0 13.1 130
Bone Springs Div 9350 17.8 13.0 137 23.3 21.4 109
Grave Springs 8550 4.1 .1 4100* 15.8 15.4 103
Kirwin 9550 19.1 6.5 294 30.8 16.3 189
Marquette 8760 15.7 -M * 26.7 -M *
Middle Powder 7760 2.0 1.6 125 15.6 16.6 94
Owl Creek 8975 .0 .0 * 17.1 10.0 171
Powder River Pass 9480 2.7 2.5 108 19.1 17.9 107
Shell Creek 9580 14.2 14.1 101 19.4 19.1 102
Timber Creek 7950 1.1 .0 * 18.2 12.7 143
----- -----
Basin Index (%) 147 121
SHOSHONE RIVER
Blackwater 9780 38.1 23.4 163 48.2 26.5 182
Evening Star 9200 34.8 22.2 157 50.9 33.9 150
Marquette 8760 15.7 -M * 26.7 -M *
Sylvan Road 7120 .0 .0 * 33.3 20.6 162
Younts Peak 8350 .0 10.2 0 34.0 20.0 170
----- -----
Basin Index (%) 131 165
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * 17.0 13.1 130
Cloud Peak Reservoir 9860 18.4 12.6 146 28.6 20.3 141
Grave Springs 8550 4.1 .1 4100* 15.8 15.4 103
Hansen Sawmill 8360 5.7 .0 * 18.9 13.4 141
Middle Powder 7760 2.0 1.6 125 15.6 16.6 94
Powder River Pass 9480 2.7 2.5 108 19.1 17.9 107
Soldier Park 8720 7.4 -M * 22.5 -M *
----- -----
Basin Index (%) 196* 119
TONGUE RIVER
Big Goose 7990 8.0 1.3 615 21.5 17.6 122
Bone Springs Div 9350 17.8 13.0 137 23.3 21.4 109
Burgess Junction 7880 5.7 5.4 106 17.7 17.5 101
Dome Lake 8880 13.9 3.2 434 24.7 19.6 126
Little Goose 8870 11.4 -M * 25.8 -M *
Sucker Creek 8880 10.5 6.3 167 21.2 20.8 102
Tie Creek 6870 .6 .0 * 24.5 17.9 137
----- -----
Basin Index (%) 193 116
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * 14.0 15.3 92
----- -----
Basin Index (%) * 92
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * -M 17.4 *
North Rapid Creek 6130 .0 .0 * -M 15.0 *
----- -----
Basin Index (%) * *
UPPER N. PLATTE
Arapaho Ridge 10960 21.9 14.7 149 32.7 28.8 114
Blackhall Mtn 9820 30.0 -M * 44.6 -M *
Columbine 9160 .0 .0 * 34.7 30.9 112
Divide Peak 8880 .0 2.2 0 28.0 26.7 105
Joe Wright 10120 15.9 19.1 83 36.9 33.2 111
Laprele Creek 8375 .2 .0 * 17.5 17.2 102
Med Bow 10500 36.6 -M * 43.2 -M *
North French Creek 10130 22.6 26.9 84 36.1 34.2 106
Never Summer 10280 22.2 18.4 121 25.1 -M *
Old Battle 10000 38.1 30.7 124 45.7 42.5 108
Rawah 9020 .2 .0 * 22.2 19.1 116
Sage Creek Basin 7850 -M .0 * 19.1 17.6 109
Sand Lake 10050 31.4 25.8 122 34.7 32.3 107
South Brush Creek 8440 .0 .0 * 16.6 20.4 81
Tower 10500 41.8 45.6 92 54.8 48.3 113
Webber Springs 9250 12.0 7.7 156 39.6 32.4 122
Willow Creek Pass 9540 12.5 6.8 184 22.8 17.7 129
Zirkel 9340 10.4 3.3 315 49.7 33.6 148
----- -----
Basin Index (%) 114 113
SWEETWATER
Deer Park 9700 31.5 8.6 366 46.5 26.4 176
Larsen Creek 9000 .3 2.4 12 27.6 -M *
South Pass 9040 28.1 3.3 852 36.6 22.8 161
----- -----
Basin Index (%) 419 169
LOWER N. PLATTE
Casper Mtn. 7900 1.4 1.6 88 21.3 20.9 102
Laprele Creek 8375 .2 .0 * 17.5 17.2 102
Reno Hill 8400 2.1 .2 1050* 21.7 21.8 100
Windy Peak 7900 1.0 .0 * 18.0 15.3 118
----- -----
Basin Index (%) 261* 104
LARAMIE RIVER
Brooklyn Lake 10240 13.2 12.8 103 29.2 27.6 106
Cinnabar Park 9574 6.4 8.5 75 29.2 29.8 98
Crow Creek 8330 -M .0 * 15.8 15.6 101
Deadman Hill 10220 17.0 14.0 121 28.8 23.4 123
Rawah 9020 .2 .0 * 22.2 19.1 116
Roach 9700 9.5 8.3 114 28.4 25.0 114
----- -----
Basin Index (%) 106 109
S. PLATTE
Black Mountain 8920 2.1 -M * 20.6 -M *
Crow Creek 8330 -M .0 * 15.8 15.6 101
Deadman Hill 10220 17.0 14.0 121 28.8 23.4 123
----- -----
Basin Index (%) 121* 114
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 .0 * 20.5 18.8 109
Divide Peak 8880 .0 2.2 0 28.0 26.7 105
Elk River 8700 .1 .0 * 24.6 24.8 99
Little Snake River 8915 11.9 8.8 135 45.3 35.6 127
Old Battle 10000 38.1 30.7 124 45.7 42.5 108
Sage Creek Basin 7850 -M .0 * 19.1 17.6 109
Sandstone RS 8150 .0 .0 * 19.4 22.7 85
Whiskey Park 8950 15.3 17.5 87 37.3 34.1 109
----- -----
Basin Index (%) 110 108
UPPER GREEN RIVER
Big Sandy Opening 9080 11.6 .2 5800* 27.0 17.2 157
Blind Bull Sum 8650 -M 17.6 * 39.7 23.7 168
East Rim Divide 7930 .1 .0 * 23.5 14.5 162
Elkhart Park G.S. 9400 10.7 3.7 289 27.6 17.1 161
Gros Ventre Summit 8750 -M 2.8 * -M 16.4 *
Gunsight Pass 9820 19.5 8.0 244 29.6 18.0 164
Kendall R.S. 7740 .0 .0 * 31.7 17.1 185
Loomis Park 8240 11.1 .1 11100* 35.4 20.9 169
New Fork Lake 8340 -M .0 * 22.1 13.8 160
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 .0 .0 * 29.8 17.1 174
Spring Creek Divide 9000 37.0 17.5 211 45.8 28.5 161
Triple Peak 8500 20.6 4.5 458 45.6 30.7 149
----- -----
Basin Index (%) 325* 164
LOWER GREEN RIVER
Blacks Fork Jct 8869 .0 -M * 19.7 -M *
Buck Pasture 9632 2.3 -M * 28.4 -M *
EF Blacks Fork GS 9360 -M -M * 23.9 -M *
Hams Fork 7840 .0 .0 * 24.9 14.7 169
Hewinta 9500 .0 .0 * 22.2 18.0 123
Hickerson Park 9122 .0 .0 * 16.3 13.8 118
Hole-in-Rock 9168 .0 .0 * 17.1 13.4 128
Indian Creek 9425 35.0 15.6 224 46.9 27.4 171
Kelley R.S. 8180 4.7 .3 1567* 35.4 22.2 159
Spirit Lk 10235 3.1 -M * 22.5 -M *
Steel Creek Park 10158 15.7 12.8 123 26.6 21.4 124
----- -----
Basin Index (%) 193* 145
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 22.2 -M *
Bug Lake 7987 16.8 .3 5600* 38.9 23.8 163
Burts Miller Ranch 8000 .0 -M * 12.4 -M *
Chalk Creek #1 9171 21.0 11.9 176 42.4 31.2 136
Hayden Fork 9130 .1 .0 * 33.2 26.2 127
Kelley R.S. 8180 4.7 .3 1567* 35.4 22.2 159
Lily Lake 9133 .0 .0 * 23.9 21.7 110
Monte Cristo 8932 26.7 10.8 247 46.4 32.0 145
Salt River Summit 7760 .1 .0 * 32.6 20.2 161
----- -----
Basin Index (%) 298* 143
-----------------------------------------------------------------------------
-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.