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: APRIL 5 , 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 25.1 15.2 165 39.2 20.5 191
Black Bear 8170 45.0 37.1 121 52.5 37.4 140
Blind Bull Sum 8650 42.2 23.1 183 -M 19.2 *
Cottonwood Creek 7670 27.3 21.1 129 37.0 24.2 153
East Rim Divide 7930 15.9 10.2 156 20.6 11.5 179
Grand Targhee 9260 44.3 37.9 117 39.2 30.4 129
Granite Creek 6770 26.7 14.7 182 35.6 19.4 184
Grassy Lake 7265 36.2 31.6 115 53.6 35.3 152
Gros Ventre Summit 8750 19.7 13.0 152 23.8 12.7 187
Gunsight Pass 9820 22.4 13.6 165 24.3 13.5 180
Lewis Lake Divide 7850 44.8 29.7 151 54.6 34.7 157
Phillips Bench 8200 36.7 24.9 147 45.9 27.6 166
Salt River Summit 7760 19.5 12.9 151 28.2 16.4 172
Snake River Station 6920 19.3 15.0 129 35.2 22.0 160
Spring Creek Divide 9000 39.8 22.5 177 39.6 23.4 169
Thumb Divide 7980 22.6 14.7 154 27.6 18.2 152
Togwotee Pass 9580 33.1 21.9 151 38.0 23.8 160
Two Ocean Plateau 9240 -M 25.8 * -M 26.6 *
Willow Creek 8380 27.9 28.3 99 48.0 33.0 145
Younts Peak 8350 25.3 14.3 177 30.9 15.4 201
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Basin Index (%) 143 161
MADISON-GALLATIN
Black Bear 8170 45.0 37.1 121 52.5 37.4 140
Canyon 7870 17.7 12.5 142 25.4 15.9 160
Madison Plateau 7750 26.6 21.4 124 35.4 25.8 137
West Yellowstone 6700 7.5 9.9 76 22.6 13.9 163
Whiskey Creek 6800 13.3 14.9 89 26.4 19.7 134
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Basin Index (%) 115 144
YELLOWSTONE
Beartooth Lake 9360 32.3 21.2 152 27.5 19.3 142
Burnt Mtn 5880 .0 4.6 0 14.7 12.7 116
Canyon 7870 17.7 12.5 142 25.4 15.9 160
Cole Creek 7850 12.3 14.3 86 8.9 12.6 71
Evening Star 9200 37.9 23.8 159 44.4 26.7 166
Fisher Creek 9100 42.6 30.9 138 46.3 31.0 149
Northeast Entrance 7350 8.9 9.2 97 20.2 11.9 170
Parker Peak 9400 34.2 19.2 178 33.7 17.2 196
Sylvan Lake 8420 23.7 19.3 123 36.9 21.8 169
Thumb Divide 7980 22.6 14.7 154 27.6 18.2 152
Two Ocean Plateau 9240 -M 25.8 * -M 26.6 *
White Mill 8700 35.3 22.0 160 35.5 23.2 153
Wolverine 7650 6.1 9.4 65 20.8 11.9 175
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Basin Index (%) 136 154
WIND RIVER
Burroughs Creek 8750 23.2 -M * 27.2 -M *
Castle Creek 8400 11.2 -M * 15.5 -M *
Cold Springs 9630 17.3 6.9 251 19.7 9.8 201
Deer Park 9700 32.6 15.2 214 38.2 19.4 197
Hobbs Park 10100 29.4 13.9 212 27.4 13.2 208
Kirwin 9550 23.1 9.6 241 25.1 11.3 222
Little Warm 9370 18.5 10.2 181 24.1 12.6 191
Owl Creek 8975 10.4 5.8 179 12.5 5.9 212
South Pass 9040 31.3 15.1 207 28.5 17.1 167
St. Lawrence Alt 8620 10.5 6.8 154 17.0 8.8 193
Togwotee Pass 9580 33.1 21.9 151 38.0 23.8 160
Townsend Creek 8700 18.6 9.4 198 22.7 11.8 192
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Basin Index (%) 196 189
BIGHORN BASIN
Bald Mtn. 9380 19.5 19.0 103 16.7 16.6 101
Bear Trap Meadow 8200 5.2 5.0 104 8.6 8.3 104
Bone Springs Div 9350 20.0 16.6 120 17.7 15.2 116
Grave Springs 8550 7.0 9.2 76 7.8 10.3 76
Kirwin 9550 23.1 9.6 241 25.1 11.3 222
Marquette 8760 14.0 -M * 17.7 -M *
Middle Powder 7760 7.4 11.8 63 7.4 11.4 65
Owl Creek 8975 10.4 5.8 179 12.5 5.9 212
Powder River Pass 9480 9.2 10.1 91 13.2 12.3 107
Shell Creek 9580 17.3 14.8 117 14.3 13.5 106
Timber Creek 7950 8.4 4.9 171 11.7 7.2 162
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Basin Index (%) 119 121
SHOSHONE RIVER
Blackwater 9780 37.6 22.4 168 41.7 20.1 207
Evening Star 9200 37.9 23.8 159 44.4 26.7 166
Marquette 8760 14.0 -M * 17.7 -M *
Sylvan Road 7120 8.8 10.9 81 30.4 16.4 185
Younts Peak 8350 25.3 14.3 177 30.9 15.4 201
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Basin Index (%) 154 188
POWDER RIVER
Bear Trap Meadow 8200 5.2 5.0 104 8.6 8.3 104
Cloud Peak Reservoir 9860 16.5 14.6 113 18.0 13.0 138
Grave Springs 8550 7.0 9.2 76 7.8 10.3 76
Hansen Sawmill 8360 11.6 6.2 187 14.3 8.4 170
Middle Powder 7760 7.4 11.8 63 7.4 11.4 65
Powder River Pass 9480 9.2 10.1 91 13.2 12.3 107
Soldier Park 8720 15.3 -M * 14.0 -M *
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Basin Index (%) 100 109
TONGUE RIVER
Big Goose 7990 12.1 9.4 129 14.0 11.2 125
Bone Springs Div 9350 20.0 16.6 120 17.7 15.2 116
Burgess Junction 7880 10.8 11.7 92 11.8 12.1 98
Dome Lake 8880 16.6 11.7 142 16.6 13.3 125
Little Goose 8870 14.1 -M * 17.2 -M *
Sucker Creek 8880 13.7 11.9 115 13.8 14.1 98
Tie Creek 6870 4.6 5.5 84 13.7 11.4 120
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Basin Index (%) 116 113
BELLE FOURCHE
Cole Canyon 5910 .0 5.5 0 7.0 9.2 76
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Basin Index (%) 0 76
CHEYENNE RIVER BASIN
Blind Park 6890 .3 7.1 4 9.0 11.6 78
North Rapid Creek 6130 .2 6.7 3 7.5 9.6 78
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Basin Index (%) 4 78
UPPER N. PLATTE
Arapaho Ridge 10960 25.3 20.6 123 26.0 22.0 118
Blackhall Mtn 9820 35.8 -M * 37.3 -M *
Columbine 9160 18.5 23.3 79 26.7 25.1 106
Divide Peak 8880 15.7 19.8 79 22.0 21.1 104
Joe Wright 10120 18.6 20.8 89 28.4 25.4 112
Laprele Creek 8375 11.1 9.4 118 12.2 12.3 99
Med Bow 10500 37.8 -M * 34.6 -M *
North French Creek 10130 24.0 29.0 83 27.0 26.3 103
Never Summer 10280 21.8 20.2 108 19.2 -M *
Old Battle 10000 35.9 30.9 116 37.5 34.4 109
Rawah 9020 9.7 10.5 92 16.7 13.9 120
Sage Creek Basin 7850 6.4 12.4 52 16.5 14.2 116
Sand Lake 10050 30.1 28.5 106 27.0 24.3 111
South Brush Creek 8440 4.4 12.0 37 12.0 15.0 80
Tower 10500 38.9 45.3 86 42.8 39.2 109
Webber Springs 9250 25.4 23.0 110 33.0 26.3 125
Willow Creek Pass 9540 17.9 12.0 149 18.5 13.2 140
Zirkel 9340 31.8 26.3 121 41.6 27.9 149
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Basin Index (%) 98 114
SWEETWATER
Deer Park 9700 32.6 15.2 214 38.2 19.4 197
Larsen Creek 9000 17.3 11.8 147 23.0 -M *
South Pass 9040 31.3 15.1 207 28.5 17.1 167
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Basin Index (%) 193 183
LOWER N. PLATTE
Casper Mtn. 7900 11.2 14.2 79 12.6 14.6 86
Laprele Creek 8375 11.1 9.4 118 12.2 12.3 99
Reno Hill 8400 12.6 13.9 91 13.7 15.1 91
Windy Peak 7900 8.7 7.8 112 11.4 10.3 111
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Basin Index (%) 96 95
LARAMIE RIVER
Brooklyn Lake 10240 22.5 21.3 106 22.6 20.8 109
Cinnabar Park 9574 17.5 20.9 84 22.2 23.8 93
Crow Creek 8330 .3 7.0 4 9.2 10.6 87
Deadman Hill 10220 20.7 15.9 130 20.3 17.0 119
Rawah 9020 9.7 10.5 92 16.7 13.9 120
Roach 9700 16.7 16.3 102 21.0 18.9 111
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Basin Index (%) 95 107
S. PLATTE
Black Mountain 8920 11.2 -M * 13.0 -M *
Crow Creek 8330 .3 7.0 4 9.2 10.6 87
Deadman Hill 10220 20.7 15.9 130 20.3 17.0 119
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Basin Index (%) 92 107
LITTLE SNAKE RIVER
Battle Mountain 7440 -M 10.1 * 16.6 14.8 112
Divide Peak 8880 15.7 19.8 79 22.0 21.1 104
Elk River 8700 12.8 19.1 67 20.2 19.7 103
Little Snake River 8915 26.8 24.6 109 38.1 29.1 131
Old Battle 10000 35.9 30.9 116 37.5 34.4 109
Sage Creek Basin 7850 6.4 12.4 52 16.5 14.2 116
Sandstone RS 8150 6.9 12.8 54 15.7 18.0 87
Whiskey Park 8950 25.0 27.1 92 29.7 27.4 108
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Basin Index (%) 88 110
UPPER GREEN RIVER
Big Sandy Opening 9080 20.6 12.5 165 23.0 13.0 177
Blind Bull Sum 8650 42.2 23.1 183 -M 19.2 *
East Rim Divide 7930 15.9 10.2 156 20.6 11.5 179
Elkhart Park G.S. 9400 18.8 12.2 154 24.1 13.0 185
Gros Ventre Summit 8750 19.7 13.0 152 23.8 12.7 187
Gunsight Pass 9820 22.4 13.6 165 24.3 13.5 180
Kendall R.S. 7740 20.5 11.5 178 28.7 14.0 205
Loomis Park 8240 26.6 13.9 191 31.9 17.0 188
New Fork Lake 8340 15.9 10.3 154 17.5 10.6 165
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 18.3 12.3 149 26.8 14.0 191
Spring Creek Divide 9000 39.8 22.5 177 39.6 23.4 169
Triple Peak 8500 35.3 21.9 161 40.1 24.9 161
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Basin Index (%) 167 179
LOWER GREEN RIVER
Blacks Fork Jct 8869 9.6 -M * 16.0 -M *
Buck Pasture 9632 17.8 -M * 23.9 -M *
EF Blacks Fork GS 9360 15.4 -M * 17.3 -M *
Hams Fork 7840 14.7 10.9 135 21.1 11.2 188
Hewinta 9500 9.5 11.0 86 17.1 13.8 124
Hickerson Park 9122 9.7 7.8 124 12.9 10.1 128
Hole-in-Rock 9168 7.8 7.0 111 13.5 9.5 142
Indian Creek 9425 39.5 24.5 161 -M 22.2 *
Kelley R.S. 8180 25.2 14.9 169 30.0 17.8 169
Spirit Lk 10235 16.6 -M * 18.8 -M *
Steel Creek Park 10158 19.1 15.6 122 21.3 16.2 131
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Basin Index (%) 137 147
UPPER BEAR RIVER
Bear River RS 8777 10.7 -M * 18.5 -M *
Bug Lake 7987 31.8 18.3 174 33.6 19.1 176
Burts Miller Ranch 8000 3.8 -M * 10.0 -M *
Chalk Creek #1 9171 33.4 24.1 139 36.2 24.8 146
Hayden Fork 9130 21.9 15.4 142 29.8 20.7 144
Kelley R.S. 8180 25.2 14.9 169 30.0 17.8 169
Lily Lake 9133 14.1 12.5 113 20.0 16.8 119
Monte Cristo 8932 35.8 27.4 131 38.8 25.5 152
Salt River Summit 7760 19.5 12.9 151 28.2 16.4 172
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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.