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 TUESDAY: MARCH 14 , 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 26.8 14.0 191 36.9 18.5 199
Black Bear 8170 42.6 31.9 134 48.6 33.5 145
Blind Bull Sum 8650 40.3 19.8 204 -M 17.1 *
Cottonwood Creek 7670 26.8 18.7 143 34.4 21.1 163
East Rim Divide 7930 18.8 9.5 198 19.8 10.3 192
Grand Targhee 9260 39.9 32.4 123 -M 26.1 *
Granite Creek 6770 30.1 14.8 203 34.2 17.7 193
Grassy Lake 7265 35.4 28.2 126 49.4 31.7 156
Gros Ventre Summit 8750 -M 11.0 * -M 11.0 *
Gunsight Pass 9820 19.5 11.7 167 22.1 11.8 187
Lewis Lake Divide 7850 38.2 27.0 141 49.9 31.1 160
Phillips Bench 8200 34.7 21.6 161 43.8 24.5 179
Salt River Summit 7760 20.4 11.5 177 -M 14.4 *
Snake River Station 6920 21.4 15.2 141 32.6 19.9 164
Spring Creek Divide 9000 36.5 19.9 183 36.9 20.7 178
Thumb Divide 7980 21.9 13.5 162 -M 16.0 *
Togwotee Pass 9580 30.4 19.8 154 34.7 21.0 165
Two Ocean Plateau 9240 -M 23.4 * -M 23.6 *
Willow Creek 8380 29.7 24.5 121 44.8 29.0 154
Younts Peak 8350 26.8 12.7 211 28.7 13.6 211
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Basin Index (%) 156 170
MADISON-GALLATIN
Black Bear 8170 42.6 31.9 134 48.6 33.5 145
Canyon 7870 16.9 11.6 146 23.4 14.2 165
Madison Plateau 7750 25.1 19.7 127 32.6 23.1 141
West Yellowstone 6700 12.3 9.9 124 20.9 12.5 167
Whiskey Creek 6800 14.9 13.5 110 24.1 17.6 137
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Basin Index (%) 129 148
YELLOWSTONE
Beartooth Lake 9360 29.2 18.6 157 24.7 17.1 144
Burnt Mtn 5880 5.8 4.4 132 12.0 10.4 115
Canyon 7870 16.9 11.6 146 23.4 14.2 165
Cole Creek 7850 9.4 11.4 82 6.7 10.2 66
Evening Star 9200 34.7 21.4 162 -M 23.6 *
Fisher Creek 9100 38.5 27.5 140 41.7 27.6 151
Northeast Entrance 7350 11.9 8.7 137 18.0 10.6 170
Parker Peak 9400 29.9 17.0 176 -M 15.2 *
Sylvan Lake 8420 22.3 17.3 129 33.6 19.3 174
Thumb Divide 7980 21.9 13.5 162 -M 16.0 *
Two Ocean Plateau 9240 -M 23.4 * -M 23.6 *
White Mill 8700 30.7 19.4 158 31.7 20.5 155
Wolverine 7650 14.4 8.9 162 19.4 10.6 183
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Basin Index (%) 148 150
WIND RIVER
Burroughs Creek 8750 23.7 -M * 25.2 -M *
Castle Creek 8400 12.0 -M * 14.4 -M *
Cold Springs 9630 12.4 6.1 203 14.9 8.2 182
Deer Park 9700 28.1 12.3 228 32.2 16.6 194
Hobbs Park 10100 22.3 11.1 201 20.4 10.6 192
Kirwin 9550 18.1 8.0 226 20.8 9.6 217
Little Warm 9370 15.6 8.9 175 21.2 10.7 198
Owl Creek 8975 7.0 4.4 159 8.8 4.7 187
South Pass 9040 26.3 12.8 205 23.7 14.7 161
St. Lawrence Alt 8620 6.9 5.9 117 12.0 7.2 167
Togwotee Pass 9580 30.4 19.8 154 34.7 21.0 165
Townsend Creek 8700 12.4 7.6 163 15.8 9.5 166
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Basin Index (%) 185 181
BIGHORN BASIN
Bald Mtn. 9380 16.8 16.1 104 14.5 14.2 102
Bear Trap Meadow 8200 5.1 4.8 106 6.1 6.7 91
Bone Springs Div 9350 15.3 13.5 113 14.6 12.8 114
Grave Springs 8550 6.0 7.7 78 6.2 8.5 73
Kirwin 9550 18.1 8.0 226 20.8 9.6 217
Marquette 8760 7.6 -M * 11.8 -M *
Middle Powder 7760 6.6 9.0 73 6.2 9.5 65
Owl Creek 8975 7.0 4.4 159 8.8 4.7 187
Powder River Pass 9480 7.0 8.7 80 10.1 10.4 97
Shell Creek 9580 14.3 12.4 115 11.4 11.3 101
Timber Creek 7950 5.4 4.1 132 6.9 5.8 119
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Basin Index (%) 115 113
SHOSHONE RIVER
Blackwater 9780 34.4 19.5 176 37.7 17.5 215
Evening Star 9200 34.7 21.4 162 -M 23.6 *
Marquette 8760 7.6 -M * 11.8 -M *
Sylvan Road 7120 15.2 10.1 150 27.9 14.7 190
Younts Peak 8350 26.8 12.7 211 28.7 13.6 211
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Basin Index (%) 174 206
POWDER RIVER
Bear Trap Meadow 8200 5.1 4.8 106 6.1 6.7 91
Cloud Peak Reservoir 9860 11.5 12.1 95 12.7 10.6 120
Grave Springs 8550 6.0 7.7 78 6.2 8.5 73
Hansen Sawmill 8360 7.3 5.3 138 9.2 6.7 137
Middle Powder 7760 6.6 9.0 73 6.2 9.5 65
Powder River Pass 9480 7.0 8.7 80 10.1 10.4 97
Soldier Park 8720 11.4 -M * 9.1 -M *
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Basin Index (%) 91 96
TONGUE RIVER
Big Goose 7990 8.4 7.3 115 9.3 8.6 108
Bone Springs Div 9350 15.3 13.5 113 14.6 12.8 114
Burgess Junction 7880 8.3 9.4 88 9.0 9.9 91
Dome Lake 8880 12.3 9.6 128 11.9 10.8 110
Little Goose 8870 9.2 -M * 11.7 -M *
Sucker Creek 8880 9.9 10.3 96 9.6 11.6 83
Tie Creek 6870 5.7 4.7 121 9.7 9.2 105
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Basin Index (%) 109 102
BELLE FOURCHE
Cole Canyon 5910 2.7 5.3 51 6.4 7.6 84
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Basin Index (%) 51 84
CHEYENNE RIVER BASIN
Blind Park 6890 4.8 7.0 69 7.7 10.2 75
North Rapid Creek 6130 5.2 6.4 81 6.3 8.2 77
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Basin Index (%) 75 76
UPPER N. PLATTE
Arapaho Ridge 10960 23.5 17.9 131 23.6 18.9 125
Blackhall Mtn 9820 34.7 -M * 34.0 -M *
Columbine 9160 23.7 21.4 111 25.8 22.1 117
Divide Peak 8880 18.7 17.2 109 20.9 18.3 114
Joe Wright 10120 17.8 18.7 95 25.7 21.8 118
Laprele Creek 8375 11.2 8.8 127 10.4 10.3 101
Med Bow 10500 36.6 -M * 31.8 -M *
North French Creek 10130 24.1 23.7 102 24.9 22.8 109
Never Summer 10280 21.2 17.3 123 17.3 -M *
Old Battle 10000 35.3 26.0 136 36.1 30.3 119
Rawah 9020 11.6 9.2 126 15.1 11.6 130
Sage Creek Basin 7850 14.5 11.8 123 15.2 12.6 121
Sand Lake 10050 28.0 23.2 121 25.5 20.7 123
South Brush Creek 8440 10.7 11.2 96 11.3 12.8 88
Tower 10500 39.3 38.7 102 41.5 34.4 121
Webber Springs 9250 28.1 20.4 138 31.6 23.0 137
Willow Creek Pass 9540 16.2 10.4 156 17.1 11.2 153
Zirkel 9340 39.8 25.4 157 40.2 24.8 162
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Basin Index (%) 121 123
SWEETWATER
Deer Park 9700 28.1 12.3 228 32.2 16.6 194
Larsen Creek 9000 19.3 10.6 182 21.0 -M *
South Pass 9040 26.3 12.8 205 23.7 14.7 161
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Basin Index (%) 206 179
LOWER N. PLATTE
Casper Mtn. 7900 11.1 11.7 95 10.3 12.2 84
Laprele Creek 8375 11.2 8.8 127 10.4 10.3 101
Reno Hill 8400 11.1 11.4 97 11.6 12.3 94
Windy Peak 7900 9.8 6.7 146 10.0 8.7 115
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Basin Index (%) 112 97
LARAMIE RIVER
Brooklyn Lake 10240 24.0 17.2 140 21.5 17.7 121
Cinnabar Park 9574 18.4 17.8 103 20.9 20.8 100
Crow Creek 8330 5.3 7.1 75 8.2 8.5 96
Deadman Hill 10220 19.2 13.3 144 18.2 14.3 127
Rawah 9020 11.6 9.2 126 15.1 11.6 130
Roach 9700 15.4 13.5 114 18.4 16.2 114
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Basin Index (%) 120 115
S. PLATTE
Black Mountain 8920 9.4 -M * 10.5 -M *
Crow Creek 8330 5.3 7.1 75 8.2 8.5 96
Deadman Hill 10220 19.2 13.3 144 18.2 14.3 127
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Basin Index (%) 120 116
LITTLE SNAKE RIVER
Battle Mountain 7440 9.8 10.8 91 15.7 13.1 120
Divide Peak 8880 18.7 17.2 109 20.9 18.3 114
Elk River 8700 19.6 17.1 115 19.1 17.3 110
Little Snake River 8915 31.2 20.5 152 36.7 26.1 141
Old Battle 10000 35.3 26.0 136 36.1 30.3 119
Sage Creek Basin 7850 14.5 11.8 123 15.2 12.6 121
Sandstone RS 8150 12.5 11.6 108 15.3 16.2 94
Whiskey Park 8950 26.8 23.7 113 28.4 24.2 117
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Basin Index (%) 121 119
UPPER GREEN RIVER
Big Sandy Opening 9080 19.8 11.0 180 21.7 11.4 190
Blind Bull Sum 8650 40.3 19.8 204 -M 17.1 *
East Rim Divide 7930 18.8 9.5 198 19.8 10.3 192
Elkhart Park G.S. 9400 17.9 10.3 174 22.1 11.4 194
Gros Ventre Summit 8750 -M 11.0 * -M 11.0 *
Gunsight Pass 9820 19.5 11.7 167 22.1 11.8 187
Kendall R.S. 7740 23.3 10.8 216 27.5 12.6 218
Loomis Park 8240 27.0 12.9 209 30.4 15.1 201
New Fork Lake 8340 16.4 9.1 180 16.3 9.4 173
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 19.8 10.7 185 25.5 12.4 206
Spring Creek Divide 9000 36.5 19.9 183 36.9 20.7 178
Triple Peak 8500 35.1 18.9 186 37.4 21.9 171
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Basin Index (%) 190 190
LOWER GREEN RIVER
Blacks Fork Jct 8869 10.1 -M * 13.6 -M *
Buck Pasture 9632 18.7 -M * 20.7 -M *
EF Blacks Fork GS 9360 15.4 -M * -M -M *
Hams Fork 7840 17.1 10.0 171 18.3 9.7 189
Hewinta 9500 11.1 8.9 125 14.2 11.8 120
Hickerson Park 9122 7.9 6.6 120 8.5 8.4 101
Hole-in-Rock 9168 6.4 6.2 103 9.2 7.8 118
Indian Creek 9425 36.8 20.6 179 -M 19.3 *
Kelley R.S. 8180 24.2 12.9 188 28.4 15.6 182
Spirit Lk 10235 13.7 -M * 14.7 -M *
Steel Creek Park 10158 15.4 12.9 119 17.1 13.7 125
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Basin Index (%) 152 143
UPPER BEAR RIVER
Bear River RS 8777 12.3 -M * 15.4 -M *
Bug Lake 7987 30.3 16.4 185 30.0 16.8 179
Burts Miller Ranch 8000 6.8 -M * 8.3 -M *
Chalk Creek #1 9171 31.6 20.4 155 37.7 21.3 177
Hayden Fork 9130 22.4 13.9 161 26.7 17.8 150
Kelley R.S. 8180 24.2 12.9 188 28.4 15.6 182
Lily Lake 9133 14.4 11.3 127 17.0 14.5 117
Monte Cristo 8932 33.6 23.3 144 34.7 22.3 156
Salt River Summit 7760 20.4 11.5 177 -M 14.4 *
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Basin Index (%) 161 161
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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.