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 FRIDAY: MARCH 17 , 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 26.4 14.4 183 36.8 18.8 196
Black Bear 8170 42.9 32.2 133 48.7 33.9 144
Blind Bull Sum 8650 40.4 20.2 200 -M 17.4 *
Cottonwood Creek 7670 26.6 19.3 138 34.4 21.5 160
East Rim Divide 7930 18.4 9.5 194 19.8 10.4 190
Grand Targhee 9260 39.9 32.7 122 -M 26.7 *
Granite Creek 6770 29.7 14.9 199 34.2 17.9 191
Grassy Lake 7265 35.9 28.9 124 49.6 32.2 154
Gros Ventre Summit 8750 17.3 11.3 153 22.0 11.2 196
Gunsight Pass 9820 19.9 11.9 167 22.1 12.0 184
Lewis Lake Divide 7850 38.4 27.4 140 50.2 31.6 159
Phillips Bench 8200 35.1 22.0 160 43.8 24.9 176
Salt River Summit 7760 20.3 11.8 172 -M 14.7 *
Snake River Station 6920 20.8 15.2 137 32.7 20.1 163
Spring Creek Divide 9000 36.6 20.5 179 37.1 21.1 176
Thumb Divide 7980 22.0 13.8 159 25.5 16.2 157
Togwotee Pass 9580 30.7 20.3 151 34.9 21.4 163
Two Ocean Plateau 9240 -M 23.7 * -M 24.0 *
Willow Creek 8380 29.9 25.2 119 45.0 29.4 153
Younts Peak 8350 27.1 13.1 207 28.9 13.9 208
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Basin Index (%) 153 168
MADISON-GALLATIN
Black Bear 8170 42.9 32.2 133 48.7 33.9 144
Canyon 7870 17.3 11.7 148 23.8 14.3 166
Madison Plateau 7750 25.4 19.9 128 32.6 23.3 140
West Yellowstone 6700 11.6 9.9 117 21.2 12.6 168
Whiskey Creek 6800 14.9 13.8 108 24.2 17.9 135
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Basin Index (%) 128 148
YELLOWSTONE
Beartooth Lake 9360 29.8 18.8 159 25.2 17.4 145
Burnt Mtn 5880 4.6 4.4 105 12.0 10.6 113
Canyon 7870 17.3 11.7 148 23.8 14.3 166
Cole Creek 7850 9.4 11.7 80 6.6 10.3 64
Evening Star 9200 35.4 21.8 162 41.1 24.0 171
Fisher Creek 9100 39.8 28.0 142 42.8 28.1 152
Northeast Entrance 7350 11.6 8.8 132 18.5 10.8 171
Parker Peak 9400 30.5 17.3 176 -M 15.4 *
Sylvan Lake 8420 22.5 17.8 126 34.0 19.6 173
Thumb Divide 7980 22.0 13.8 159 25.5 16.2 157
Two Ocean Plateau 9240 -M 23.7 * -M 24.0 *
White Mill 8700 31.7 19.6 162 32.5 20.9 156
Wolverine 7650 14.3 8.8 162 19.6 10.8 181
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Basin Index (%) 147 154
WIND RIVER
Burroughs Creek 8750 24.8 -M * 25.3 -M *
Castle Creek 8400 12.0 -M * 14.2 -M *
Cold Springs 9630 12.0 6.2 194 14.9 8.3 180
Deer Park 9700 27.6 12.6 219 32.1 16.8 191
Hobbs Park 10100 22.4 11.4 196 20.4 10.8 189
Kirwin 9550 18.2 8.3 219 20.9 9.7 215
Little Warm 9370 15.6 9.1 171 21.3 10.9 195
Owl Creek 8975 6.8 4.5 151 8.7 4.8 181
South Pass 9040 26.0 13.2 197 23.7 15.0 158
St. Lawrence Alt 8620 6.6 5.9 112 12.0 7.3 164
Togwotee Pass 9580 30.7 20.3 151 34.9 21.4 163
Townsend Creek 8700 12.2 7.9 154 15.9 9.8 162
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Basin Index (%) 179 178
BIGHORN BASIN
Bald Mtn. 9380 16.8 16.3 103 14.5 14.5 100
Bear Trap Meadow 8200 5.1 4.9 104 6.1 6.8 90
Bone Springs Div 9350 15.4 13.8 112 14.6 13.1 111
Grave Springs 8550 5.9 7.9 75 6.1 8.7 70
Kirwin 9550 18.2 8.3 219 20.9 9.7 215
Marquette 8760 7.3 -M * 11.6 -M *
Middle Powder 7760 6.3 9.3 68 6.2 9.7 64
Owl Creek 8975 6.8 4.5 151 8.7 4.8 181
Powder River Pass 9480 7.0 8.9 79 10.3 10.6 97
Shell Creek 9580 14.3 12.6 113 11.6 11.6 100
Timber Creek 7950 5.3 4.2 126 6.9 5.9 117
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Basin Index (%) 111 111
SHOSHONE RIVER
Blackwater 9780 34.7 20.2 172 38.5 17.8 216
Evening Star 9200 35.4 21.8 162 41.1 24.0 171
Marquette 8760 7.3 -M * 11.6 -M *
Sylvan Road 7120 15.1 10.3 147 28.4 14.9 191
Younts Peak 8350 27.1 13.1 207 28.9 13.9 208
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Basin Index (%) 172 194
POWDER RIVER
Bear Trap Meadow 8200 5.1 4.9 104 6.1 6.8 90
Cloud Peak Reservoir 9860 11.7 12.5 94 12.8 10.8 119
Grave Springs 8550 5.9 7.9 75 6.1 8.7 70
Hansen Sawmill 8360 7.2 5.5 131 9.2 6.9 133
Middle Powder 7760 6.3 9.3 68 6.2 9.7 64
Powder River Pass 9480 7.0 8.9 79 10.3 10.6 97
Soldier Park 8720 11.7 -M * 9.1 -M *
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Basin Index (%) 88 95
TONGUE RIVER
Big Goose 7990 8.2 7.5 109 9.3 8.8 106
Bone Springs Div 9350 15.4 13.8 112 14.6 13.1 111
Burgess Junction 7880 8.3 9.4 88 9.0 10.1 89
Dome Lake 8880 12.4 9.9 125 12.0 11.1 108
Little Goose 8870 9.1 -M * 11.5 -M *
Sucker Creek 8880 10.0 10.6 94 9.8 11.8 83
Tie Creek 6870 4.3 4.8 90 9.7 9.5 102
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Basin Index (%) 105 100
BELLE FOURCHE
Cole Canyon 5910 2.7 5.4 50 6.3 7.8 81
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Basin Index (%) 50 81
CHEYENNE RIVER BASIN
Blind Park 6890 4.0 7.2 56 7.8 10.3 76
North Rapid Creek 6130 4.6 6.4 72 6.4 8.4 76
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Basin Index (%) 63 76
UPPER N. PLATTE
Arapaho Ridge 10960 23.6 18.0 131 23.6 19.1 124
Blackhall Mtn 9820 34.6 -M * 34.8 -M *
Columbine 9160 24.0 21.7 111 25.8 22.5 115
Divide Peak 8880 18.1 17.4 104 21.0 18.6 113
Joe Wright 10120 17.9 18.8 95 25.7 22.3 115
Laprele Creek 8375 11.1 9.0 123 10.4 10.5 99
Med Bow 10500 36.6 -M * 32.4 -M *
North French Creek 10130 24.1 24.3 99 25.1 23.2 108
Never Summer 10280 21.3 17.5 122 17.3 -M *
Old Battle 10000 35.3 26.1 135 36.3 30.8 118
Rawah 9020 11.4 9.2 124 15.1 11.7 129
Sage Creek Basin 7850 12.9 11.7 110 15.2 12.8 119
Sand Lake 10050 28.1 23.9 118 25.5 21.1 121
South Brush Creek 8440 9.2 11.1 83 11.6 13.0 89
Tower 10500 39.2 39.3 100 41.6 35.1 119
Webber Springs 9250 27.8 20.8 134 31.5 23.3 135
Willow Creek Pass 9540 16.3 10.7 152 17.1 11.5 149
Zirkel 9340 39.1 25.7 152 40.2 25.0 161
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Basin Index (%) 118 122
SWEETWATER
Deer Park 9700 27.6 12.6 219 32.1 16.8 191
Larsen Creek 9000 -M 10.9 * 21.0 -M *
South Pass 9040 26.0 13.2 197 23.7 15.0 158
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Basin Index (%) 208 175
LOWER N. PLATTE
Casper Mtn. 7900 10.7 11.9 90 10.4 12.4 84
Laprele Creek 8375 11.1 9.0 123 10.4 10.5 99
Reno Hill 8400 11.0 11.7 94 11.7 12.5 94
Windy Peak 7900 9.5 6.8 140 10.0 8.8 114
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Basin Index (%) 107 96
LARAMIE RIVER
Brooklyn Lake 10240 24.1 17.5 138 21.7 18.0 121
Cinnabar Park 9574 18.1 17.8 102 20.8 21.1 99
Crow Creek 8330 4.7 7.1 66 8.1 8.7 93
Deadman Hill 10220 19.3 13.6 142 18.2 14.5 126
Rawah 9020 11.4 9.2 124 15.1 11.7 129
Roach 9700 15.3 13.7 112 18.4 16.5 112
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Basin Index (%) 118 113
S. PLATTE
Black Mountain 8920 9.3 -M * 10.5 -M *
Crow Creek 8330 4.7 7.1 66 8.1 8.7 93
Deadman Hill 10220 19.3 13.6 142 18.2 14.5 126
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Basin Index (%) 116 113
LITTLE SNAKE RIVER
Battle Mountain 7440 8.5 11.1 77 15.6 13.3 117
Divide Peak 8880 18.1 17.4 104 21.0 18.6 113
Elk River 8700 18.5 17.3 107 19.1 17.6 109
Little Snake River 8915 29.8 20.7 144 36.7 26.2 140
Old Battle 10000 35.3 26.1 135 36.3 30.8 118
Sage Creek Basin 7850 12.9 11.7 110 15.2 12.8 119
Sandstone RS 8150 11.7 11.7 100 15.3 16.4 93
Whiskey Park 8950 26.7 24.0 111 28.3 24.5 116
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Basin Index (%) 115 117
UPPER GREEN RIVER
Big Sandy Opening 9080 19.9 11.3 176 21.7 11.6 187
Blind Bull Sum 8650 40.4 20.2 200 -M 17.4 *
East Rim Divide 7930 18.4 9.5 194 19.8 10.4 190
Elkhart Park G.S. 9400 17.8 10.5 170 22.1 11.6 191
Gros Ventre Summit 8750 17.3 11.3 153 22.0 11.2 196
Gunsight Pass 9820 19.9 11.9 167 22.1 12.0 184
Kendall R.S. 7740 22.9 11.0 208 27.6 12.8 216
Loomis Park 8240 26.6 13.1 203 30.5 15.3 199
New Fork Lake 8340 16.0 9.2 174 16.5 9.6 172
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 18.9 10.9 173 25.5 12.6 202
Spring Creek Divide 9000 36.6 20.5 179 37.1 21.1 176
Triple Peak 8500 34.8 19.2 181 37.6 22.3 169
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Basin Index (%) 183 188
LOWER GREEN RIVER
Blacks Fork Jct 8869 9.5 -M * 13.6 -M *
Buck Pasture 9632 17.8 -M * 20.7 -M *
EF Blacks Fork GS 9360 15.3 -M * 14.2 -M *
Hams Fork 7840 16.1 10.2 158 18.3 10.0 183
Hewinta 9500 9.3 9.4 99 14.3 12.0 119
Hickerson Park 9122 7.1 6.6 108 8.4 8.6 98
Hole-in-Rock 9168 5.8 6.4 91 9.1 8.1 112
Indian Creek 9425 36.9 20.9 177 -M 19.7 *
Kelley R.S. 8180 24.9 13.1 190 28.4 15.9 179
Spirit Lk 10235 13.4 -M * 14.7 -M *
Steel Creek Park 10158 15.3 13.2 116 17.1 14.0 122
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Basin Index (%) 145 139
UPPER BEAR RIVER
Bear River RS 8777 10.5 -M * 15.4 -M *
Bug Lake 7987 29.9 16.5 181 30.0 17.1 175
Burts Miller Ranch 8000 5.9 -M * 8.5 -M *
Chalk Creek #1 9171 31.0 20.6 150 32.0 21.7 147
Hayden Fork 9130 21.2 14.1 150 26.7 18.2 147
Kelley R.S. 8180 24.9 13.1 190 28.4 15.9 179
Lily Lake 9133 13.6 11.4 119 17.0 14.7 116
Monte Cristo 8932 33.5 23.9 140 32.4 22.7 143
Salt River Summit 7760 20.3 11.8 172 -M 14.7 *
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Basin Index (%) 157 151
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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.