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: APRIL 9 , 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 23.9 15.1 158 39.6 20.8 190
Black Bear 8170 46.1 36.9 125 53.7 38.0 141
Blind Bull Sum 8650 43.8 23.4 187 -M 19.4 *
Cottonwood Creek 7670 28.2 20.9 135 38.7 24.5 158
East Rim Divide 7930 15.6 10.2 153 21.2 11.7 181
Grand Targhee 9260 46.3 39.0 119 39.5 30.8 128
Granite Creek 6770 25.7 14.1 182 36.1 19.6 184
Grassy Lake 7265 37.1 31.4 118 55.0 35.8 154
Gros Ventre Summit 8750 -M 12.8 * -M 12.9 *
Gunsight Pass 9820 23.7 13.9 171 25.4 13.9 183
Lewis Lake Divide 7850 46.2 30.1 153 55.4 35.2 157
Phillips Bench 8200 38.3 25.6 150 46.8 28.0 167
Salt River Summit 7760 20.0 12.6 159 -M 16.6 *
Snake River Station 6920 18.3 14.6 125 35.9 22.4 160
Spring Creek Divide 9000 41.6 22.6 184 40.9 23.7 173
Thumb Divide 7980 22.5 14.7 153 28.0 18.5 151
Togwotee Pass 9580 33.8 22.3 152 38.8 24.2 160
Two Ocean Plateau 9240 -M 26.3 * -M 27.1 *
Willow Creek 8380 29.4 28.3 104 50.1 33.5 150
Younts Peak 8350 25.8 14.5 178 31.2 15.7 199
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Basin Index (%) 145 161
MADISON-GALLATIN
Black Bear 8170 46.1 36.9 125 53.7 38.0 141
Canyon 7870 17.8 12.4 144 25.8 16.1 160
Madison Plateau 7750 27.3 21.7 126 36.2 26.2 138
West Yellowstone 6700 6.1 9.1 67 23.3 14.1 165
Whiskey Creek 6800 13.4 14.8 91 26.8 20.0 134
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Basin Index (%) 117 145
YELLOWSTONE
Beartooth Lake 9360 32.6 21.5 152 27.8 19.6 142
Burnt Mtn 5880 .1 4.0 2 14.7 13.1 112
Canyon 7870 17.8 12.4 144 25.8 16.1 160
Cole Creek 7850 11.7 14.9 79 8.9 13.1 68
Evening Star 9200 38.3 23.9 160 44.7 27.2 164
Fisher Creek 9100 43.0 31.3 137 46.7 31.4 149
Northeast Entrance 7350 7.5 8.8 85 20.5 12.2 168
Parker Peak 9400 35.4 19.7 180 34.4 17.6 195
Sylvan Lake 8420 24.1 19.5 124 37.4 22.2 168
Thumb Divide 7980 22.5 14.7 153 28.0 18.5 151
Two Ocean Plateau 9240 -M 26.3 * -M 27.1 *
White Mill 8700 36.3 22.5 161 35.8 23.6 152
Wolverine 7650 5.4 9.6 56 21.0 12.2 172
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Basin Index (%) 135 152
WIND RIVER
Burroughs Creek 8750 23.2 -M * 27.6 -M *
Castle Creek 8400 10.8 -M * 15.8 -M *
Cold Springs 9630 17.8 6.5 274 20.2 10.0 202
Deer Park 9700 33.5 16.0 209 38.4 20.0 192
Hobbs Park 10100 30.3 14.3 212 28.1 13.6 207
Kirwin 9550 22.9 9.6 239 25.4 11.6 219
Little Warm 9370 -M 10.3 * 25.1 12.9 195
Owl Creek 8975 10.1 5.8 174 12.8 6.1 210
South Pass 9040 -M 15.5 * 28.8 17.5 165
St. Lawrence Alt 8620 10.4 6.9 151 17.4 9.0 193
Togwotee Pass 9580 33.8 22.3 152 38.8 24.2 160
Townsend Creek 8700 18.7 9.8 191 23.2 12.2 190
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Basin Index (%) 195 188
BIGHORN BASIN
Bald Mtn. 9380 20.0 19.2 104 17.0 17.0 100
Bear Trap Meadow 8200 5.1 4.8 106 9.0 8.7 103
Bone Springs Div 9350 20.1 17.0 118 18.1 15.6 116
Grave Springs 8550 7.0 9.5 74 7.9 10.7 74
Kirwin 9550 22.9 9.6 239 25.4 11.6 219
Marquette 8760 14.2 -M * 17.7 -M *
Middle Powder 7760 7.5 12.2 61 7.7 11.8 65
Owl Creek 8975 10.1 5.8 174 12.8 6.1 210
Powder River Pass 9480 9.2 10.3 89 13.6 12.7 107
Shell Creek 9580 17.7 15.3 116 14.7 13.8 107
Timber Creek 7950 8.0 5.1 157 11.7 7.4 158
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Basin Index (%) 117 119
SHOSHONE RIVER
Blackwater 9780 38.2 22.8 168 42.2 20.5 206
Evening Star 9200 38.3 23.9 160 44.7 27.2 164
Marquette 8760 14.2 -M * 17.7 -M *
Sylvan Road 7120 6.2 10.6 58 30.6 16.6 184
Younts Peak 8350 25.8 14.5 178 31.2 15.7 199
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Basin Index (%) 151 186
POWDER RIVER
Bear Trap Meadow 8200 5.1 4.8 106 9.0 8.7 103
Cloud Peak Reservoir 9860 16.4 15.0 109 18.4 13.5 136
Grave Springs 8550 7.0 9.5 74 7.9 10.7 74
Hansen Sawmill 8360 11.4 6.1 187 14.4 8.7 166
Middle Powder 7760 7.5 12.2 61 7.7 11.8 65
Powder River Pass 9480 9.2 10.3 89 13.6 12.7 107
Soldier Park 8720 14.9 -M * 14.3 -M *
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Basin Index (%) 98 107
TONGUE RIVER
Big Goose 7990 11.8 9.8 120 14.2 11.7 121
Bone Springs Div 9350 20.1 17.0 118 18.1 15.6 116
Burgess Junction 7880 10.7 12.0 89 12.0 12.4 97
Dome Lake 8880 16.6 11.8 141 16.8 13.8 122
Little Goose 8870 13.8 -M * 17.3 -M *
Sucker Creek 8880 13.5 12.4 109 14.0 14.5 97
Tie Creek 6870 3.4 5.5 62 13.9 11.9 117
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Basin Index (%) 111 111
BELLE FOURCHE
Cole Canyon 5910 .0 4.6 0 7.3 9.6 76
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Basin Index (%) 0 76
CHEYENNE RIVER BASIN
Blind Park 6890 .0 6.8 0 9.1 12.0 76
North Rapid Creek 6130 .0 6.4 0 7.7 10.0 77
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Basin Index (%) 0 76
UPPER N. PLATTE
Arapaho Ridge 10960 25.1 21.1 119 26.2 22.8 115
Blackhall Mtn 9820 35.9 -M * 37.6 -M *
Columbine 9160 17.0 23.3 73 27.3 25.6 107
Divide Peak 8880 15.4 20.1 77 22.6 21.5 105
Joe Wright 10120 18.5 21.5 86 28.7 25.9 111
Laprele Creek 8375 9.9 9.4 105 12.5 12.6 99
Med Bow 10500 38.8 -M * 35.0 -M *
North French Creek 10130 24.7 30.0 82 27.3 26.9 101
Never Summer 10280 21.0 20.4 103 19.5 -M *
Old Battle 10000 36.1 31.6 114 38.1 35.2 108
Rawah 9020 8.8 10.6 83 17.3 14.6 118
Sage Creek Basin 7850 5.3 11.4 46 16.5 14.7 112
Sand Lake 10050 30.7 29.3 105 27.5 25.0 110
South Brush Creek 8440 2.6 11.8 22 12.6 15.3 82
Tower 10500 38.8 46.3 84 43.3 40.0 108
Webber Springs 9250 25.5 23.2 110 33.4 26.8 125
Willow Creek Pass 9540 18.0 12.3 146 18.6 13.5 138
Zirkel 9340 30.9 26.1 118 41.9 28.6 147
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Basin Index (%) 94 113
SWEETWATER
Deer Park 9700 33.5 16.0 209 38.4 20.0 192
Larsen Creek 9000 16.5 11.4 145 23.5 -M *
South Pass 9040 -M 15.5 * 28.8 17.5 165
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Basin Index (%) 182 179
LOWER N. PLATTE
Casper Mtn. 7900 10.9 14.4 76 13.0 15.2 86
Laprele Creek 8375 9.9 9.4 105 12.5 12.6 99
Reno Hill 8400 12.1 14.1 86 14.2 15.7 90
Windy Peak 7900 7.8 7.6 103 11.8 10.6 111
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Basin Index (%) 89 95
LARAMIE RIVER
Brooklyn Lake 10240 22.9 22.1 104 23.1 21.2 109
Cinnabar Park 9574 16.8 21.4 79 22.3 24.3 92
Crow Creek 8330 .0 6.8 0 9.3 11.0 85
Deadman Hill 10220 21.4 16.3 131 20.7 17.4 119
Rawah 9020 8.8 10.6 83 17.3 14.6 118
Roach 9700 16.6 16.6 100 21.4 19.3 111
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Basin Index (%) 92 106
S. PLATTE
Black Mountain 8920 10.8 -M * 13.2 -M *
Crow Creek 8330 .0 6.8 0 9.3 11.0 85
Deadman Hill 10220 21.4 16.3 131 20.7 17.4 119
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Basin Index (%) 93 106
LITTLE SNAKE RIVER
Battle Mountain 7440 -M 9.0 * 16.7 15.1 111
Divide Peak 8880 15.4 20.1 77 22.6 21.5 105
Elk River 8700 11.7 18.9 62 20.2 20.1 100
Little Snake River 8915 25.7 25.8 100 38.6 30.1 128
Old Battle 10000 36.1 31.6 114 38.1 35.2 108
Sage Creek Basin 7850 5.3 11.4 46 16.5 14.7 112
Sandstone RS 8150 5.4 12.7 43 16.2 18.4 88
Whiskey Park 8950 25.1 27.6 91 29.9 28.1 106
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Basin Index (%) 84 109
UPPER GREEN RIVER
Big Sandy Opening 9080 21.4 12.8 167 23.3 13.3 175
Blind Bull Sum 8650 43.8 23.4 187 -M 19.4 *
East Rim Divide 7930 15.6 10.2 153 21.2 11.7 181
Elkhart Park G.S. 9400 19.9 12.3 162 24.6 13.3 185
Gros Ventre Summit 8750 -M 12.8 * -M 12.9 *
Gunsight Pass 9820 23.7 13.9 171 25.4 13.9 183
Kendall R.S. 7740 20.0 11.2 179 29.4 14.1 209
Loomis Park 8240 26.8 13.8 194 32.2 17.3 186
New Fork Lake 8340 15.6 10.2 153 17.9 10.8 166
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 18.8 12.3 153 27.6 14.1 196
Spring Creek Divide 9000 41.6 22.6 184 40.9 23.7 173
Triple Peak 8500 36.5 21.6 169 41.2 25.2 163
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Basin Index (%) 173 180
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.7 -M * 16.3 -M *
Buck Pasture 9632 17.7 -M * 23.9 -M *
EF Blacks Fork GS 9360 14.8 -M * 17.7 -M *
Hams Fork 7840 14.0 10.3 136 21.8 11.4 191
Hewinta 9500 8.9 10.8 82 17.8 14.1 126
Hickerson Park 9122 9.3 7.9 118 13.3 10.3 129
Hole-in-Rock 9168 7.6 7.1 107 13.9 9.8 142
Indian Creek 9425 41.1 24.8 166 41.5 22.5 184
Kelley R.S. 8180 25.6 14.5 177 30.9 18.1 171
Spirit Lk 10235 17.0 -M * 19.2 -M *
Steel Creek Park 10158 19.5 15.9 123 21.5 16.6 130
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Basin Index (%) 138 156
UPPER BEAR RIVER
Bear River RS 8777 8.6 -M * 19.0 -M *
Bug Lake 7987 32.9 18.7 176 34.7 19.4 179
Burts Miller Ranch 8000 2.3 -M * 10.5 -M *
Chalk Creek #1 9171 34.1 24.5 139 36.7 25.3 145
Hayden Fork 9130 19.4 15.2 128 30.2 21.2 142
Kelley R.S. 8180 25.6 14.5 177 30.9 18.1 171
Lily Lake 9133 13.9 12.8 109 20.4 17.3 118
Monte Cristo 8932 37.3 27.8 134 40.3 26.0 155
Salt River Summit 7760 20.0 12.6 159 -M 16.6 *
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Basin Index (%) 145 152
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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.