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 28 , 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 14.7 165 38.1 19.8 192
Black Bear 8170 43.3 35.0 124 51.0 35.9 142
Blind Bull Sum 8650 41.8 21.5 194 -M 18.4 *
Cottonwood Creek 7670 26.5 20.8 127 35.9 23.1 155
East Rim Divide 7930 17.6 9.8 180 20.6 11.1 186
Grand Targhee 9260 42.4 35.0 121 38.4 28.5 135
Granite Creek 6770 28.1 14.9 189 35.0 18.8 186
Grassy Lake 7265 35.0 31.0 113 52.0 34.0 153
Gros Ventre Summit 8750 -M 12.4 * -M 12.0 *
Gunsight Pass 9820 20.8 13.0 160 23.1 12.8 180
Lewis Lake Divide 7850 42.0 29.2 144 53.1 33.4 159
Phillips Bench 8200 35.7 23.6 151 45.0 26.5 170
Salt River Summit 7760 19.6 12.6 156 -M 15.7 *
Snake River Station 6920 19.1 15.9 120 34.2 21.3 161
Spring Creek Divide 9000 38.6 22.3 173 38.6 22.5 172
Thumb Divide 7980 22.8 15.1 151 26.9 17.4 155
Togwotee Pass 9580 31.9 21.4 149 36.5 22.8 160
Two Ocean Plateau 9240 -M 25.2 * -M 25.6 *
Willow Creek 8380 28.3 26.6 106 46.7 31.4 149
Younts Peak 8350 25.2 13.9 181 30.2 14.8 204
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Basin Index (%) 144 162
MADISON-GALLATIN
Black Bear 8170 43.3 35.0 124 51.0 35.9 142
Canyon 7870 16.9 12.2 139 24.5 15.1 162
Madison Plateau 7750 25.8 21.0 123 34.4 24.7 139
West Yellowstone 6700 8.8 10.1 87 22.1 13.1 169
Whiskey Creek 6800 13.5 14.7 92 25.5 19.0 134
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Basin Index (%) 116 146
YELLOWSTONE
Beartooth Lake 9360 31.0 20.5 151 26.5 18.4 144
Burnt Mtn 5880 1.1 4.6 24 12.7 11.5 110
Canyon 7870 16.9 12.2 139 24.5 15.1 162
Cole Creek 7850 9.9 12.9 77 6.9 11.6 59
Evening Star 9200 36.7 23.6 156 43.1 25.5 169
Fisher Creek 9100 42.3 29.2 145 45.2 29.8 152
Northeast Entrance 7350 9.6 9.7 99 19.8 11.4 174
Parker Peak 9400 32.1 18.4 174 32.6 16.4 199
Sylvan Lake 8420 22.5 18.8 120 35.5 20.8 171
Thumb Divide 7980 22.8 15.1 151 26.9 17.4 155
Two Ocean Plateau 9240 -M 25.2 * -M 25.6 *
White Mill 8700 34.1 21.2 161 34.5 22.2 155
Wolverine 7650 7.6 8.9 85 20.2 11.4 177
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Basin Index (%) 137 155
WIND RIVER
Burroughs Creek 8750 23.1 -M * 26.3 -M *
Castle Creek 8400 10.8 -M * 14.6 -M *
Cold Springs 9630 12.8 7.0 183 15.8 9.1 174
Deer Park 9700 29.0 14.3 203 34.1 18.0 189
Hobbs Park 10100 23.9 12.9 185 22.2 12.0 185
Kirwin 9550 20.1 9.0 223 22.2 10.6 209
Little Warm 9370 16.6 10.0 166 22.2 11.9 187
Owl Creek 8975 7.3 5.0 146 9.8 5.4 181
South Pass 9040 27.5 14.5 190 24.6 16.1 153
St. Lawrence Alt 8620 6.0 6.6 91 13.2 8.1 163
Togwotee Pass 9580 31.9 21.4 149 36.5 22.8 160
Townsend Creek 8700 13.3 8.8 151 17.2 10.8 159
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Basin Index (%) 172 175
BIGHORN BASIN
Bald Mtn. 9380 18.1 17.5 103 15.6 15.7 99
Bear Trap Meadow 8200 4.1 5.1 80 7.0 7.6 92
Bone Springs Div 9350 17.4 14.9 117 16.2 14.2 114
Grave Springs 8550 6.2 8.5 73 6.7 9.5 71
Kirwin 9550 20.1 9.0 223 22.2 10.6 209
Marquette 8760 8.5 -M * 12.8 -M *
Middle Powder 7760 6.3 10.7 59 6.3 10.6 59
Owl Creek 8975 7.3 5.0 146 9.8 5.4 181
Powder River Pass 9480 7.4 9.7 76 11.2 11.5 97
Shell Creek 9580 15.9 13.9 114 13.0 12.6 103
Timber Creek 7950 5.0 4.4 114 8.2 6.6 124
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Basin Index (%) 109 111
SHOSHONE RIVER
Blackwater 9780 36.3 21.5 169 40.1 19.1 210
Evening Star 9200 36.7 23.6 156 43.1 25.5 169
Marquette 8760 8.5 -M * 12.8 -M *
Sylvan Road 7120 10.6 11.0 96 29.6 15.7 189
Younts Peak 8350 25.2 13.9 181 30.2 14.8 204
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Basin Index (%) 155 190
POWDER RIVER
Bear Trap Meadow 8200 4.1 5.1 80 7.0 7.6 92
Cloud Peak Reservoir 9860 13.1 13.6 96 14.5 12.0 121
Grave Springs 8550 6.2 8.5 73 6.7 9.5 71
Hansen Sawmill 8360 8.5 6.1 139 11.0 7.8 141
Middle Powder 7760 6.3 10.7 59 6.3 10.6 59
Powder River Pass 9480 7.4 9.7 76 11.2 11.5 97
Soldier Park 8720 12.3 -M * 10.9 -M *
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Basin Index (%) 85 96
TONGUE RIVER
Big Goose 7990 9.5 8.4 113 11.2 9.8 114
Bone Springs Div 9350 17.4 14.9 117 16.2 14.2 114
Burgess Junction 7880 9.3 10.7 87 10.3 11.2 92
Dome Lake 8880 13.9 11.1 125 13.9 12.3 113
Little Goose 8870 10.6 -M * 13.8 -M *
Sucker Creek 8880 11.0 11.2 98 11.1 13.0 85
Tie Creek 6870 2.9 5.4 54 11.2 10.3 109
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Basin Index (%) 104 104
BELLE FOURCHE
Cole Canyon 5910 .0 5.7 0 6.8 8.4 81
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Basin Index (%) 0 81
CHEYENNE RIVER BASIN
Blind Park 6890 .0 7.1 0 8.2 10.9 75
North Rapid Creek 6130 1.7 6.7 25 6.9 9.0 77
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Basin Index (%) 12 76
UPPER N. PLATTE
Arapaho Ridge 10960 23.2 19.1 121 24.2 20.6 117
Blackhall Mtn 9820 34.7 -M * 35.9 -M *
Columbine 9160 19.4 22.1 88 26.3 23.8 111
Divide Peak 8880 15.0 18.9 79 21.1 19.9 106
Joe Wright 10120 17.1 19.8 86 26.5 24.0 110
Laprele Creek 8375 10.0 9.4 106 10.9 11.4 96
Med Bow 10500 36.8 -M * 33.4 -M *
North French Creek 10130 23.4 27.1 86 26.0 25.0 104
Never Summer 10280 21.1 18.9 112 18.0 -M *
Old Battle 10000 35.4 28.4 125 36.5 32.7 112
Rawah 9020 9.3 10.1 92 15.8 13.0 122
Sage Creek Basin 7850 7.3 12.3 59 15.4 13.4 115
Sand Lake 10050 29.0 26.4 110 25.9 22.9 113
South Brush Creek 8440 5.9 12.0 49 11.8 14.1 84
Tower 10500 39.1 42.3 92 41.9 37.3 112
Webber Springs 9250 25.3 22.5 112 31.8 24.9 128
Willow Creek Pass 9540 16.7 11.5 145 17.5 12.3 142
Zirkel 9340 33.1 26.0 127 40.4 26.7 151
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Basin Index (%) 101 116
SWEETWATER
Deer Park 9700 29.0 14.3 203 34.1 18.0 189
Larsen Creek 9000 16.7 11.9 140 22.0 -M *
South Pass 9040 27.5 14.5 190 24.6 16.1 153
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Basin Index (%) 180 172
LOWER N. PLATTE
Casper Mtn. 7900 9.2 12.8 72 10.6 13.5 79
Laprele Creek 8375 10.0 9.4 106 10.9 11.4 96
Reno Hill 8400 11.0 12.7 87 12.5 14.0 89
Windy Peak 7900 8.0 7.7 104 10.6 9.7 109
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Basin Index (%) 90 92
LARAMIE RIVER
Brooklyn Lake 10240 22.5 18.9 119 21.8 19.5 112
Cinnabar Park 9574 16.8 19.5 86 21.2 22.6 94
Crow Creek 8330 .3 6.9 4 8.4 9.8 86
Deadman Hill 10220 19.7 14.9 132 18.9 15.9 119
Rawah 9020 9.3 10.1 92 15.8 13.0 122
Roach 9700 15.1 14.9 101 19.1 17.8 107
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Basin Index (%) 98 107
S. PLATTE
Black Mountain 8920 9.5 -M * 11.2 -M *
Crow Creek 8330 .3 6.9 4 8.4 9.8 86
Deadman Hill 10220 19.7 14.9 132 18.9 15.9 119
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Basin Index (%) 92 106
LITTLE SNAKE RIVER
Battle Mountain 7440 3.3 10.9 30 16.0 14.1 113
Divide Peak 8880 15.0 18.9 79 21.1 19.9 106
Elk River 8700 13.4 17.9 75 19.2 18.7 103
Little Snake River 8915 26.2 22.1 119 37.4 27.6 136
Old Battle 10000 35.4 28.4 125 36.5 32.7 112
Sage Creek Basin 7850 7.3 12.3 59 15.4 13.4 115
Sandstone RS 8150 8.4 13.1 64 15.7 17.3 91
Whiskey Park 8950 25.3 24.9 102 28.9 26.2 110
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Basin Index (%) 90 112
UPPER GREEN RIVER
Big Sandy Opening 9080 20.4 12.1 169 22.6 12.4 182
Blind Bull Sum 8650 41.8 21.5 194 -M 18.4 *
East Rim Divide 7930 17.6 9.8 180 20.6 11.1 186
Elkhart Park G.S. 9400 18.7 11.6 161 23.5 12.4 190
Gros Ventre Summit 8750 -M 12.4 * -M 12.0 *
Gunsight Pass 9820 20.8 13.0 160 23.1 12.8 180
Kendall R.S. 7740 21.1 11.3 187 28.3 13.5 210
Loomis Park 8240 26.7 14.4 185 31.5 16.3 193
New Fork Lake 8340 16.2 10.0 162 17.2 10.2 169
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 18.4 11.7 157 26.1 13.3 196
Spring Creek Divide 9000 38.6 22.3 173 38.6 22.5 172
Triple Peak 8500 35.2 20.9 168 39.0 23.8 164
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Basin Index (%) 174 182
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.6 -M * 14.9 -M *
Buck Pasture 9632 17.0 -M * 22.3 -M *
EF Blacks Fork GS 9360 14.4 -M * 15.9 -M *
Hams Fork 7840 13.6 10.6 128 19.7 10.7 184
Hewinta 9500 7.7 10.2 75 15.9 13.0 122
Hickerson Park 9122 7.6 7.1 107 10.8 9.3 116
Hole-in-Rock 9168 6.2 7.0 89 11.8 8.8 134
Indian Creek 9425 38.8 23.0 169 -M 21.1 *
Kelley R.S. 8180 24.5 14.5 169 29.4 17.0 173
Spirit Lk 10235 14.6 -M * 17.0 -M *
Steel Creek Park 10158 17.3 14.4 120 19.3 15.1 128
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Basin Index (%) 133 145
UPPER BEAR RIVER
Bear River RS 8777 9.2 -M * 17.4 -M *
Bug Lake 7987 30.4 17.7 172 32.1 18.2 176
Burts Miller Ranch 8000 2.8 -M * 9.4 -M *
Chalk Creek #1 9171 32.0 22.6 142 34.4 23.5 146
Hayden Fork 9130 19.0 14.7 129 28.5 19.6 145
Kelley R.S. 8180 24.5 14.5 169 29.4 17.0 173
Lily Lake 9133 13.1 11.8 111 18.9 15.9 119
Monte Cristo 8932 34.0 25.4 134 36.7 24.3 151
Salt River Summit 7760 19.6 12.6 156 -M 15.7 *
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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.