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 THURSDAY: APRIL 6 , 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 24.6 15.2 162 39.2 20.5 191
Black Bear 8170 45.1 37.2 121 52.6 37.6 140
Blind Bull Sum 8650 42.4 23.1 184 -M 19.2 *
Cottonwood Creek 7670 27.3 21.0 130 37.1 24.3 153
East Rim Divide 7930 15.9 10.2 156 20.8 11.6 179
Grand Targhee 9260 44.3 38.2 116 39.4 30.4 130
Granite Creek 6770 26.5 14.6 182 35.7 19.4 184
Grassy Lake 7265 36.3 31.5 115 53.8 35.3 152
Gros Ventre Summit 8750 19.6 12.9 152 23.9 12.7 188
Gunsight Pass 9820 22.3 13.7 163 24.3 13.6 179
Lewis Lake Divide 7850 45.0 29.8 151 54.6 34.8 157
Phillips Bench 8200 37.1 25.2 147 45.8 27.7 165
Salt River Summit 7760 19.3 12.9 150 28.3 16.4 173
Snake River Station 6920 18.9 14.9 127 35.2 22.1 159
Spring Creek Divide 9000 40.0 22.5 178 39.6 23.5 169
Thumb Divide 7980 22.6 14.7 154 27.6 18.3 151
Togwotee Pass 9580 33.1 22.0 150 38.0 23.9 159
Two Ocean Plateau 9240 -M 25.9 * -M 26.6 *
Willow Creek 8380 27.6 28.4 97 48.0 33.0 145
Younts Peak 8350 25.3 14.3 177 30.9 15.5 199
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Basin Index (%) 142 160
MADISON-GALLATIN
Black Bear 8170 45.1 37.2 121 52.6 37.6 140
Canyon 7870 17.6 12.5 141 25.5 16.0 159
Madison Plateau 7750 26.4 21.4 123 35.4 25.9 137
West Yellowstone 6700 7.2 9.7 74 22.6 14.0 161
Whiskey Creek 6800 13.3 14.9 89 26.4 19.8 133
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Basin Index (%) 115 143
YELLOWSTONE
Beartooth Lake 9360 32.5 21.2 153 27.6 19.4 142
Burnt Mtn 5880 .4 4.6 9 14.8 12.8 116
Canyon 7870 17.6 12.5 141 25.5 16.0 159
Cole Creek 7850 12.2 14.4 85 9.0 12.7 71
Evening Star 9200 37.8 23.7 159 44.4 26.8 166
Fisher Creek 9100 42.6 31.1 137 46.2 31.1 149
Northeast Entrance 7350 8.6 9.1 95 20.2 12.0 168
Parker Peak 9400 34.5 19.3 179 33.9 17.3 196
Sylvan Lake 8420 23.7 19.3 123 36.9 21.8 169
Thumb Divide 7980 22.6 14.7 154 27.6 18.3 151
Two Ocean Plateau 9240 -M 25.9 * -M 26.6 *
White Mill 8700 35.4 22.1 160 35.5 23.2 153
Wolverine 7650 6.0 9.5 63 20.8 12.0 173
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Basin Index (%) 136 153
WIND RIVER
Burroughs Creek 8750 23.5 -M * 27.4 -M *
Castle Creek 8400 11.2 -M * 15.4 -M *
Cold Springs 9630 17.3 6.8 254 19.8 9.8 202
Deer Park 9700 32.6 15.4 212 37.7 19.6 192
Hobbs Park 10100 29.6 14.0 211 27.7 13.2 210
Kirwin 9550 23.3 9.6 243 25.3 11.4 222
Little Warm 9370 18.6 10.2 182 24.3 12.6 193
Owl Creek 8975 10.4 5.8 179 12.6 5.9 214
South Pass 9040 31.3 15.1 207 28.5 17.1 167
St. Lawrence Alt 8620 10.6 6.8 156 17.1 8.9 192
Togwotee Pass 9580 33.1 22.0 150 38.0 23.9 159
Townsend Creek 8700 18.7 9.5 197 22.9 11.9 192
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Basin Index (%) 196 189
BIGHORN BASIN
Bald Mtn. 9380 19.5 19.0 103 16.9 16.7 101
Bear Trap Meadow 8200 5.3 5.0 106 8.7 8.4 104
Bone Springs Div 9350 20.1 16.7 120 17.9 15.3 117
Grave Springs 8550 6.9 9.3 74 7.9 10.4 76
Kirwin 9550 23.3 9.6 243 25.3 11.4 222
Marquette 8760 14.1 -M * 17.7 -M *
Middle Powder 7760 7.4 11.9 62 7.6 11.5 66
Owl Creek 8975 10.4 5.8 179 12.6 5.9 214
Powder River Pass 9480 9.2 10.1 91 13.4 12.4 108
Shell Creek 9580 17.4 15.0 116 14.5 13.6 107
Timber Creek 7950 8.4 4.9 171 11.6 7.2 161
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Basin Index (%) 119 121
SHOSHONE RIVER
Blackwater 9780 37.7 22.4 168 41.9 20.2 207
Evening Star 9200 37.8 23.7 159 44.4 26.8 166
Marquette 8760 14.1 -M * 17.7 -M *
Sylvan Road 7120 8.0 10.8 74 30.3 16.5 184
Younts Peak 8350 25.3 14.3 177 30.9 15.5 199
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Basin Index (%) 153 187
POWDER RIVER
Bear Trap Meadow 8200 5.3 5.0 106 8.7 8.4 104
Cloud Peak Reservoir 9860 16.6 14.7 113 18.2 13.1 139
Grave Springs 8550 6.9 9.3 74 7.9 10.4 76
Hansen Sawmill 8360 11.8 6.2 190 14.2 8.4 169
Middle Powder 7760 7.4 11.9 62 7.6 11.5 66
Powder River Pass 9480 9.2 10.1 91 13.4 12.4 108
Soldier Park 8720 15.4 -M * 14.1 -M *
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Basin Index (%) 100 109
TONGUE RIVER
Big Goose 7990 12.2 9.5 128 14.1 11.2 126
Bone Springs Div 9350 20.1 16.7 120 17.9 15.3 117
Burgess Junction 7880 10.8 11.8 92 12.0 12.2 98
Dome Lake 8880 16.7 11.7 143 16.7 13.4 125
Little Goose 8870 14.2 -M * 17.3 -M *
Sucker Creek 8880 13.8 12.0 115 14.0 14.2 99
Tie Creek 6870 4.7 5.5 85 13.8 11.5 120
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Basin Index (%) 117 114
BELLE FOURCHE
Cole Canyon 5910 .0 5.3 0 7.1 9.3 76
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Basin Index (%) 0 76
CHEYENNE RIVER BASIN
Blind Park 6890 .2 7.1 3 9.1 11.8 77
North Rapid Creek 6130 .0 6.6 0 7.6 9.8 78
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Basin Index (%) 1 77
UPPER N. PLATTE
Arapaho Ridge 10960 25.3 20.7 122 26.0 22.2 117
Blackhall Mtn 9820 36.0 -M * 37.4 -M *
Columbine 9160 18.5 23.4 79 27.1 25.2 108
Divide Peak 8880 16.1 19.8 81 22.5 21.2 106
Joe Wright 10120 18.9 21.0 90 28.5 25.5 112
Laprele Creek 8375 11.1 9.4 118 12.5 12.3 102
Med Bow 10500 38.0 -M * 34.8 -M *
North French Creek 10130 23.9 29.2 82 27.1 26.4 103
Never Summer 10280 21.9 20.3 108 19.3 -M *
Old Battle 10000 36.0 31.1 116 37.8 34.6 109
Rawah 9020 9.7 10.6 92 16.9 14.0 121
Sage Creek Basin 7850 6.8 12.2 56 16.5 14.3 115
Sand Lake 10050 30.4 28.6 106 27.4 24.5 112
South Brush Creek 8440 4.6 12.0 38 12.4 15.0 83
Tower 10500 38.9 45.6 85 43.1 39.4 109
Webber Springs 9250 26.0 23.1 113 33.1 26.4 125
Willow Creek Pass 9540 17.9 12.1 148 18.5 13.3 139
Zirkel 9340 31.9 26.3 121 41.7 28.1 148
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Basin Index (%) 98 114
SWEETWATER
Deer Park 9700 32.6 15.4 212 37.7 19.6 192
Larsen Creek 9000 17.1 11.7 146 23.0 -M *
South Pass 9040 31.3 15.1 207 28.5 17.1 167
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Basin Index (%) 192 180
LOWER N. PLATTE
Casper Mtn. 7900 11.4 14.3 80 12.8 14.7 87
Laprele Creek 8375 11.1 9.4 118 12.5 12.3 102
Reno Hill 8400 12.7 14.0 91 14.1 15.2 93
Windy Peak 7900 8.7 7.8 112 11.7 10.4 112
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Basin Index (%) 96 97
LARAMIE RIVER
Brooklyn Lake 10240 22.6 21.5 105 22.9 20.9 110
Cinnabar Park 9574 17.7 21.0 84 22.2 24.0 92
Crow Creek 8330 .3 7.0 4 9.3 10.7 87
Deadman Hill 10220 20.7 16.0 129 20.3 17.1 119
Rawah 9020 9.7 10.6 92 16.9 14.0 121
Roach 9700 16.7 16.4 102 21.1 19.0 111
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Basin Index (%) 95 107
S. PLATTE
Black Mountain 8920 11.4 -M * 13.0 -M *
Crow Creek 8330 .3 7.0 4 9.3 10.7 87
Deadman Hill 10220 20.7 16.0 129 20.3 17.1 119
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Basin Index (%) 91 106
LITTLE SNAKE RIVER
Battle Mountain 7440 -M 9.8 * 16.6 14.8 112
Divide Peak 8880 16.1 19.8 81 22.5 21.2 106
Elk River 8700 12.7 19.2 66 20.3 19.8 103
Little Snake River 8915 27.0 24.9 108 38.3 29.2 131
Old Battle 10000 36.0 31.1 116 37.8 34.6 109
Sage Creek Basin 7850 6.8 12.2 56 16.5 14.3 115
Sandstone RS 8150 7.0 12.8 55 16.2 18.1 90
Whiskey Park 8950 25.4 27.2 93 29.7 27.6 108
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Basin Index (%) 89 110
UPPER GREEN RIVER
Big Sandy Opening 9080 20.8 12.5 166 23.1 13.0 178
Blind Bull Sum 8650 42.4 23.1 184 -M 19.2 *
East Rim Divide 7930 15.9 10.2 156 20.8 11.6 179
Elkhart Park G.S. 9400 19.0 12.2 156 24.1 13.1 184
Gros Ventre Summit 8750 19.6 12.9 152 23.9 12.7 188
Gunsight Pass 9820 22.3 13.7 163 24.3 13.6 179
Kendall R.S. 7740 20.4 11.5 177 28.8 14.0 206
Loomis Park 8240 26.7 13.8 193 31.9 17.0 188
New Fork Lake 8340 15.6 10.3 151 17.6 10.6 166
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 18.3 12.3 149 27.0 14.0 193
Spring Creek Divide 9000 40.0 22.5 178 39.6 23.5 169
Triple Peak 8500 35.5 21.9 162 40.1 25.0 160
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Basin Index (%) 168 179
LOWER GREEN RIVER
Blacks Fork Jct 8869 9.7 -M * 16.0 -M *
Buck Pasture 9632 18.0 -M * 23.8 -M *
EF Blacks Fork GS 9360 15.7 -M * 17.4 -M *
Hams Fork 7840 14.3 10.7 134 21.2 11.2 189
Hewinta 9500 9.8 10.9 90 17.3 13.9 124
Hickerson Park 9122 9.7 7.9 123 13.1 10.1 130
Hole-in-Rock 9168 7.9 7.0 113 13.6 9.7 140
Indian Creek 9425 39.8 24.6 162 -M 22.3 *
Kelley R.S. 8180 25.1 14.8 170 30.0 17.8 169
Spirit Lk 10235 16.7 -M * 18.9 -M *
Steel Creek Park 10158 19.2 15.7 122 21.3 16.3 131
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Basin Index (%) 137 147
UPPER BEAR RIVER
Bear River RS 8777 10.1 -M * 18.6 -M *
Bug Lake 7987 31.8 18.3 174 33.7 19.2 176
Burts Miller Ranch 8000 3.5 -M * 10.0 -M *
Chalk Creek #1 9171 33.4 24.3 137 36.1 24.9 145
Hayden Fork 9130 21.8 15.4 142 29.7 20.9 142
Kelley R.S. 8180 25.1 14.8 170 30.0 17.8 169
Lily Lake 9133 14.2 12.6 113 20.0 17.0 118
Monte Cristo 8932 35.7 27.6 129 38.8 25.6 152
Salt River Summit 7760 19.3 12.9 150 28.3 16.4 173
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Basin Index (%) 144 153
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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.