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 MONDAY: APRIL 3 , 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 24.2 15.0 161 39.0 20.4 191
Black Bear 8170 44.7 36.8 121 52.4 37.0 142
Blind Bull Sum 8650 42.3 22.8 186 -M 19.0 *
Cottonwood Creek 7670 26.9 21.3 126 36.8 24.0 153
East Rim Divide 7930 16.3 10.1 161 20.7 11.4 182
Grand Targhee 9260 44.2 37.2 119 39.2 30.0 131
Granite Creek 6770 26.5 14.8 179 35.5 19.2 185
Grassy Lake 7265 36.3 31.6 115 53.7 35.0 153
Gros Ventre Summit 8750 19.7 13.0 152 23.6 12.5 189
Gunsight Pass 9820 22.3 13.5 165 24.3 13.4 181
Lewis Lake Divide 7850 44.7 29.6 151 54.4 34.5 158
Phillips Bench 8200 36.6 24.6 149 45.5 27.4 166
Salt River Summit 7760 19.4 13.0 149 28.2 16.2 174
Snake River Station 6920 18.6 15.2 122 35.3 21.8 162
Spring Creek Divide 9000 39.9 22.5 177 39.5 23.2 170
Thumb Divide 7980 22.6 14.8 153 27.5 18.0 153
Togwotee Pass 9580 33.0 21.7 152 37.8 23.6 160
Two Ocean Plateau 9240 -M 25.7 * -M 26.4 *
Willow Creek 8380 28.3 28.1 101 47.8 32.7 146
Younts Peak 8350 25.7 14.2 181 30.6 15.3 200
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Basin Index (%) 143 162
MADISON-GALLATIN
Black Bear 8170 44.7 36.8 121 52.4 37.0 142
Canyon 7870 17.5 12.4 141 25.3 15.7 161
Madison Plateau 7750 26.5 21.4 124 35.3 25.5 138
West Yellowstone 6700 7.2 10.2 71 22.5 13.8 163
Whiskey Creek 6800 13.4 15.0 89 26.2 19.5 134
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Basin Index (%) 114 145
YELLOWSTONE
Beartooth Lake 9360 32.2 21.2 152 27.2 19.1 142
Burnt Mtn 5880 .6 4.5 13 14.7 12.4 119
Canyon 7870 17.5 12.4 141 25.3 15.7 161
Cole Creek 7850 12.2 13.9 88 8.6 12.2 70
Evening Star 9200 37.9 23.8 159 44.1 26.4 167
Fisher Creek 9100 42.8 30.6 140 46.1 30.7 150
Northeast Entrance 7350 8.7 9.4 93 20.1 11.8 170
Parker Peak 9400 34.1 18.9 180 33.7 17.0 198
Sylvan Lake 8420 23.6 19.2 123 36.9 21.6 171
Thumb Divide 7980 22.6 14.8 153 27.5 18.0 153
Two Ocean Plateau 9240 -M 25.7 * -M 26.4 *
White Mill 8700 35.2 21.8 161 35.3 22.9 154
Wolverine 7650 6.5 9.3 70 20.8 11.8 176
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Basin Index (%) 137 155
WIND RIVER
Burroughs Creek 8750 23.4 -M * 27.1 -M *
Castle Creek 8400 11.0 -M * 15.6 -M *
Cold Springs 9630 17.3 7.1 244 19.5 9.7 201
Deer Park 9700 32.6 14.9 219 37.6 19.1 197
Hobbs Park 10100 29.3 13.6 215 27.4 12.8 214
Kirwin 9550 23.0 9.5 242 24.7 11.2 221
Little Warm 9370 18.5 10.2 181 24.0 12.4 194
Owl Creek 8975 10.0 5.7 175 12.2 5.8 210
South Pass 9040 31.2 15.0 208 28.3 16.9 167
St. Lawrence Alt 8620 10.4 6.8 153 16.9 8.7 194
Togwotee Pass 9580 33.0 21.7 152 37.8 23.6 160
Townsend Creek 8700 18.5 9.2 201 22.5 11.5 196
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Basin Index (%) 197 191
BIGHORN BASIN
Bald Mtn. 9380 19.2 18.9 102 16.4 16.5 99
Bear Trap Meadow 8200 5.2 5.1 102 8.4 8.2 102
Bone Springs Div 9350 19.6 16.3 120 17.4 15.0 116
Grave Springs 8550 6.9 9.0 77 7.6 10.1 75
Kirwin 9550 23.0 9.5 242 24.7 11.2 221
Marquette 8760 13.6 -M * 17.2 -M *
Middle Powder 7760 7.3 11.6 63 7.0 11.3 62
Owl Creek 8975 10.0 5.7 175 12.2 5.8 210
Powder River Pass 9480 8.9 10.0 89 12.9 12.1 107
Shell Creek 9580 17.1 14.7 116 14.0 13.3 105
Timber Creek 7950 8.0 4.8 167 11.2 7.1 158
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Basin Index (%) 119 119
SHOSHONE RIVER
Blackwater 9780 37.6 22.3 169 41.7 19.9 210
Evening Star 9200 37.9 23.8 159 44.1 26.4 167
Marquette 8760 13.6 -M * 17.2 -M *
Sylvan Road 7120 8.3 11.0 75 30.3 16.3 186
Younts Peak 8350 25.7 14.2 181 30.6 15.3 200
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Basin Index (%) 154 188
POWDER RIVER
Bear Trap Meadow 8200 5.2 5.1 102 8.4 8.2 102
Cloud Peak Reservoir 9860 16.2 14.3 113 17.6 12.8 138
Grave Springs 8550 6.9 9.0 77 7.6 10.1 75
Hansen Sawmill 8360 11.4 6.3 181 13.9 8.2 170
Middle Powder 7760 7.3 11.6 63 7.0 11.3 62
Powder River Pass 9480 8.9 10.0 89 12.9 12.1 107
Soldier Park 8720 15.2 -M * 13.8 -M *
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Basin Index (%) 99 107
TONGUE RIVER
Big Goose 7990 11.9 9.2 129 13.6 10.9 125
Bone Springs Div 9350 19.6 16.3 120 17.4 15.0 116
Burgess Junction 7880 10.6 11.5 92 11.5 11.9 97
Dome Lake 8880 16.2 11.6 140 16.2 13.1 124
Little Goose 8870 13.7 -M * 16.8 -M *
Sucker Creek 8880 13.4 11.6 116 13.3 13.9 96
Tie Creek 6870 4.6 5.5 84 13.7 11.1 123
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Basin Index (%) 116 113
BELLE FOURCHE
Cole Canyon 5910 .1 5.7 2 6.9 9.0 77
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Basin Index (%) 2 77
CHEYENNE RIVER BASIN
Blind Park 6890 .1 7.2 1 8.8 11.4 77
North Rapid Creek 6130 .3 6.7 4 7.3 9.4 78
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Basin Index (%) 3 77
UPPER N. PLATTE
Arapaho Ridge 10960 24.6 20.2 122 25.3 21.5 118
Blackhall Mtn 9820 35.5 -M * 36.8 -M *
Columbine 9160 18.6 23.2 80 26.8 24.8 108
Divide Peak 8880 15.3 19.6 78 21.9 20.8 105
Joe Wright 10120 17.8 20.5 87 27.5 25.0 110
Laprele Creek 8375 10.7 9.4 114 12.0 12.1 99
Med Bow 10500 37.6 -M * 34.5 -M *
North French Creek 10130 24.0 28.5 84 26.8 26.0 103
Never Summer 10280 21.2 19.9 107 18.4 -M *
Old Battle 10000 35.9 30.3 118 37.5 34.1 110
Rawah 9020 9.2 10.4 88 16.5 13.7 120
Sage Creek Basin 7850 6.6 12.6 52 16.1 14.1 114
Sand Lake 10050 30.1 28.1 107 26.8 24.0 112
South Brush Creek 8440 4.7 12.2 39 12.1 14.8 82
Tower 10500 39.2 44.8 88 42.6 38.6 110
Webber Springs 9250 25.5 23.0 111 32.8 26.0 126
Willow Creek Pass 9540 17.1 11.9 144 17.9 13.0 138
Zirkel 9340 32.0 26.3 122 41.2 27.6 149
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Basin Index (%) 98 114
SWEETWATER
Deer Park 9700 32.6 14.9 219 37.6 19.1 197
Larsen Creek 9000 17.5 12.0 146 23.1 -M *
South Pass 9040 31.2 15.0 208 28.3 16.9 167
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Basin Index (%) 194 183
LOWER N. PLATTE
Casper Mtn. 7900 10.9 13.8 79 12.3 14.3 86
Laprele Creek 8375 10.7 9.4 114 12.0 12.1 99
Reno Hill 8400 12.4 13.6 91 13.6 14.8 92
Windy Peak 7900 8.5 7.8 109 11.3 10.2 111
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Basin Index (%) 95 96
LARAMIE RIVER
Brooklyn Lake 10240 22.6 20.7 109 22.6 20.4 111
Cinnabar Park 9574 17.2 20.4 84 21.9 23.3 94
Crow Creek 8330 .3 7.0 4 9.2 10.4 88
Deadman Hill 10220 20.4 15.8 129 19.8 16.7 119
Rawah 9020 9.2 10.4 88 16.5 13.7 120
Roach 9700 16.2 16.0 101 20.4 18.6 110
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Basin Index (%) 95 107
S. PLATTE
Black Mountain 8920 10.7 -M * 12.4 -M *
Crow Creek 8330 .3 7.0 4 9.2 10.4 88
Deadman Hill 10220 20.4 15.8 129 19.8 16.7 119
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Basin Index (%) 91 107
LITTLE SNAKE RIVER
Battle Mountain 7440 -M 10.4 * 16.5 14.6 113
Divide Peak 8880 15.3 19.6 78 21.9 20.8 105
Elk River 8700 12.5 18.9 66 19.8 19.5 102
Little Snake River 8915 26.6 23.8 112 38.1 28.9 132
Old Battle 10000 35.9 30.3 118 37.5 34.1 110
Sage Creek Basin 7850 6.6 12.6 52 16.1 14.1 114
Sandstone RS 8150 7.3 13.0 56 15.8 17.9 88
Whiskey Park 8950 25.4 26.5 96 29.6 27.2 109
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Basin Index (%) 90 110
UPPER GREEN RIVER
Big Sandy Opening 9080 20.9 12.4 169 23.0 12.8 180
Blind Bull Sum 8650 42.3 22.8 186 -M 19.0 *
East Rim Divide 7930 16.3 10.1 161 20.7 11.4 182
Elkhart Park G.S. 9400 18.9 12.2 155 23.9 12.9 185
Gros Ventre Summit 8750 19.7 13.0 152 23.6 12.5 189
Gunsight Pass 9820 22.3 13.5 165 24.3 13.4 181
Kendall R.S. 7740 20.6 11.5 179 28.8 13.8 209
Loomis Park 8240 26.3 14.1 187 31.8 16.8 189
New Fork Lake 8340 15.6 10.3 151 17.6 10.5 168
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 18.6 12.3 151 26.9 13.9 194
Spring Creek Divide 9000 39.9 22.5 177 39.5 23.2 170
Triple Peak 8500 35.4 21.9 162 40.0 24.7 162
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Basin Index (%) 168 181
LOWER GREEN RIVER
Blacks Fork Jct 8869 9.4 -M * 16.0 -M *
Buck Pasture 9632 17.8 -M * 23.6 -M *
EF Blacks Fork GS 9360 15.6 -M * 17.3 -M *
Hams Fork 7840 14.4 10.9 132 21.2 11.1 191
Hewinta 9500 9.3 10.9 85 17.4 13.6 128
Hickerson Park 9122 9.9 7.7 129 13.1 9.9 132
Hole-in-Rock 9168 8.0 7.0 114 13.7 9.4 146
Indian Creek 9425 39.5 24.2 163 -M 22.0 *
Kelley R.S. 8180 25.1 15.0 167 30.0 17.6 170
Spirit Lk 10235 16.6 -M * 18.8 -M *
Steel Creek Park 10158 19.1 15.5 123 21.1 16.0 132
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Basin Index (%) 137 150
UPPER BEAR RIVER
Bear River RS 8777 9.7 -M * 18.6 -M *
Bug Lake 7987 31.8 18.2 175 33.7 18.9 178
Burts Miller Ranch 8000 3.5 -M * 10.1 -M *
Chalk Creek #1 9171 33.6 23.8 141 35.3 24.5 144
Hayden Fork 9130 20.4 15.3 133 29.7 20.5 145
Kelley R.S. 8180 25.1 15.0 167 30.0 17.6 170
Lily Lake 9133 14.2 12.3 115 20.0 16.6 120
Monte Cristo 8932 35.9 26.9 133 38.7 25.3 153
Salt River Summit 7760 19.4 13.0 149 28.2 16.2 174
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Basin Index (%) 145 154
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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.