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: MARCH 29 , 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 19.9 191
Black Bear 8170 43.5 35.4 123 51.0 36.1 141
Blind Bull Sum 8650 41.7 21.8 191 -M 18.5 *
Cottonwood Creek 7670 26.5 20.9 127 35.8 23.3 154
East Rim Divide 7930 17.4 9.8 178 20.5 11.2 183
Grand Targhee 9260 42.4 35.4 120 38.4 28.7 134
Granite Creek 6770 27.9 14.9 187 34.9 18.9 185
Grassy Lake 7265 35.0 31.3 112 51.9 34.2 152
Gros Ventre Summit 8750 -M 12.6 * -M 12.2 *
Gunsight Pass 9820 21.2 13.1 162 23.1 12.9 179
Lewis Lake Divide 7850 42.2 29.3 144 53.0 33.6 158
Phillips Bench 8200 35.7 23.8 150 45.0 26.7 169
Salt River Summit 7760 19.6 12.7 154 27.8 15.8 176
Snake River Station 6920 19.0 15.8 120 34.2 21.4 160
Spring Creek Divide 9000 38.6 22.4 172 38.5 22.6 170
Thumb Divide 7980 22.8 15.1 151 26.9 17.5 154
Togwotee Pass 9580 32.0 21.5 149 36.5 22.9 159
Two Ocean Plateau 9240 -M 25.3 * -M 25.8 *
Willow Creek 8380 28.2 27.0 104 46.7 31.6 148
Younts Peak 8350 24.8 13.9 178 30.2 14.9 203
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Basin Index (%) 143 161
MADISON-GALLATIN
Black Bear 8170 43.5 35.4 123 51.0 36.1 141
Canyon 7870 17.2 12.2 141 24.6 15.2 162
Madison Plateau 7750 25.9 21.1 123 34.5 24.9 139
West Yellowstone 6700 8.7 10.2 85 22.1 13.3 166
Whiskey Creek 6800 13.5 14.8 91 25.7 19.1 135
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Basin Index (%) 116 145
YELLOWSTONE
Beartooth Lake 9360 31.1 20.7 150 26.6 18.5 144
Burnt Mtn 5880 .7 4.5 16 12.7 11.6 109
Canyon 7870 17.2 12.2 141 24.6 15.2 162
Cole Creek 7850 10.1 13.0 78 7.1 11.7 61
Evening Star 9200 36.8 23.8 155 43.2 25.7 168
Fisher Creek 9100 42.2 29.4 144 45.5 30.0 152
Northeast Entrance 7350 9.6 9.8 98 19.8 11.5 172
Parker Peak 9400 32.3 18.5 175 32.6 16.5 198
Sylvan Lake 8420 22.6 18.9 120 35.5 21.0 169
Thumb Divide 7980 22.8 15.1 151 26.9 17.5 154
Two Ocean Plateau 9240 -M 25.3 * -M 25.8 *
White Mill 8700 34.1 21.3 160 34.8 22.3 156
Wolverine 7650 7.4 8.9 83 20.2 11.4 177
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Basin Index (%) 136 155
WIND RIVER
Burroughs Creek 8750 23.4 -M * 26.4 -M *
Castle Creek 8400 10.9 -M * 14.6 -M *
Cold Springs 9630 13.5 7.1 190 16.0 9.2 174
Deer Park 9700 29.4 14.3 206 34.5 18.3 189
Hobbs Park 10100 24.6 13.0 189 22.9 12.1 189
Kirwin 9550 20.4 9.1 224 22.7 10.7 212
Little Warm 9370 16.7 10.1 165 22.3 12.0 186
Owl Creek 8975 7.8 5.1 153 10.2 5.5 185
South Pass 9040 28.0 14.6 192 25.2 16.3 155
St. Lawrence Alt 8620 6.3 6.7 94 13.5 8.2 165
Togwotee Pass 9580 32.0 21.5 149 36.5 22.9 159
Townsend Creek 8700 14.1 8.8 160 18.1 11.0 165
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Basin Index (%) 175 176
BIGHORN BASIN
Bald Mtn. 9380 18.2 17.8 102 15.7 15.9 99
Bear Trap Meadow 8200 4.4 5.1 86 7.3 7.7 95
Bone Springs Div 9350 18.0 15.1 119 16.6 14.4 115
Grave Springs 8550 6.3 8.6 73 6.8 9.7 70
Kirwin 9550 20.4 9.1 224 22.7 10.7 212
Marquette 8760 8.8 -M * 13.2 -M *
Middle Powder 7760 6.8 10.8 63 6.7 10.8 62
Owl Creek 8975 7.8 5.1 153 10.2 5.5 185
Powder River Pass 9480 7.9 9.8 81 11.6 11.6 100
Shell Creek 9580 16.2 14.0 116 13.2 12.8 103
Timber Creek 7950 5.3 4.5 118 8.5 6.8 125
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Basin Index (%) 111 113
SHOSHONE RIVER
Blackwater 9780 36.3 21.7 167 40.2 19.2 209
Evening Star 9200 36.8 23.8 155 43.2 25.7 168
Marquette 8760 8.8 -M * 13.2 -M *
Sylvan Road 7120 10.2 11.0 93 29.7 15.8 188
Younts Peak 8350 24.8 13.9 178 30.2 14.9 203
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Basin Index (%) 154 190
POWDER RIVER
Bear Trap Meadow 8200 4.4 5.1 86 7.3 7.7 95
Cloud Peak Reservoir 9860 14.0 13.7 102 15.5 12.2 127
Grave Springs 8550 6.3 8.6 73 6.8 9.7 70
Hansen Sawmill 8360 9.5 6.2 153 11.9 7.9 151
Middle Powder 7760 6.8 10.8 63 6.7 10.8 62
Powder River Pass 9480 7.9 9.8 81 11.6 11.6 100
Soldier Park 8720 13.2 -M * 11.8 -M *
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Basin Index (%) 90 100
TONGUE RIVER
Big Goose 7990 10.1 8.4 120 11.8 10.1 117
Bone Springs Div 9350 18.0 15.1 119 16.6 14.4 115
Burgess Junction 7880 9.5 10.9 87 10.5 11.4 92
Dome Lake 8880 14.5 11.2 129 14.5 12.5 116
Little Goose 8870 11.2 -M * 14.4 -M *
Sucker Creek 8880 11.4 11.2 102 11.4 13.2 86
Tie Creek 6870 3.0 5.4 56 11.5 10.5 110
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Basin Index (%) 107 106
BELLE FOURCHE
Cole Canyon 5910 .0 5.7 0 6.9 8.4 82
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Basin Index (%) 0 82
CHEYENNE RIVER BASIN
Blind Park 6890 .0 7.2 0 8.3 11.0 75
North Rapid Creek 6130 1.5 6.7 22 6.9 9.0 77
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Basin Index (%) 11 76
UPPER N. PLATTE
Arapaho Ridge 10960 24.0 19.3 124 25.0 20.8 120
Blackhall Mtn 9820 35.3 -M * 36.4 -M *
Columbine 9160 19.5 22.3 87 26.5 24.0 110
Divide Peak 8880 15.4 19.1 81 21.4 20.1 106
Joe Wright 10120 17.7 19.9 89 27.0 24.2 112
Laprele Creek 8375 10.2 9.4 109 11.1 11.5 97
Med Bow 10500 36.8 -M * 33.6 -M *
North French Creek 10130 23.4 27.3 86 26.1 25.2 104
Never Summer 10280 21.1 19.1 110 18.1 -M *
Old Battle 10000 35.7 28.6 125 36.8 32.9 112
Rawah 9020 9.6 10.1 95 16.1 13.1 123
Sage Creek Basin 7850 7.5 12.5 60 15.5 13.6 114
Sand Lake 10050 29.5 26.7 110 26.4 23.1 114
South Brush Creek 8440 5.8 12.1 48 11.8 14.2 83
Tower 10500 39.2 42.7 92 42.1 37.5 112
Webber Springs 9250 25.7 22.6 114 32.3 25.1 129
Willow Creek Pass 9540 17.0 11.6 147 17.8 12.5 142
Zirkel 9340 33.3 26.2 127 40.9 26.8 153
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Basin Index (%) 102 116
SWEETWATER
Deer Park 9700 29.4 14.3 206 34.5 18.3 189
Larsen Creek 9000 16.8 11.9 141 22.1 -M *
South Pass 9040 28.0 14.6 192 25.2 16.3 155
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Basin Index (%) 182 173
LOWER N. PLATTE
Casper Mtn. 7900 9.6 12.9 74 10.9 13.7 80
Laprele Creek 8375 10.2 9.4 109 11.1 11.5 97
Reno Hill 8400 11.3 12.8 88 12.7 14.1 90
Windy Peak 7900 8.1 7.7 105 10.7 9.7 110
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Basin Index (%) 92 93
LARAMIE RIVER
Brooklyn Lake 10240 22.5 19.1 118 22.0 19.6 112
Cinnabar Park 9574 17.0 19.6 87 21.4 22.7 94
Crow Creek 8330 .5 6.8 7 8.8 9.9 89
Deadman Hill 10220 20.1 15.1 133 19.4 16.0 121
Rawah 9020 9.6 10.1 95 16.1 13.1 123
Roach 9700 16.2 15.0 108 20.2 17.9 113
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Basin Index (%) 100 109
S. PLATTE
Black Mountain 8920 10.4 -M * 12.1 -M *
Crow Creek 8330 .5 6.8 7 8.8 9.9 89
Deadman Hill 10220 20.1 15.1 133 19.4 16.0 121
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Basin Index (%) 94 109
LITTLE SNAKE RIVER
Battle Mountain 7440 3.2 10.9 29 16.1 14.2 113
Divide Peak 8880 15.4 19.1 81 21.4 20.1 106
Elk River 8700 13.3 18.0 74 19.4 18.9 103
Little Snake River 8915 26.6 22.3 119 37.5 27.8 135
Old Battle 10000 35.7 28.6 125 36.8 32.9 112
Sage Creek Basin 7850 7.5 12.5 60 15.5 13.6 114
Sandstone RS 8150 8.1 13.1 62 15.7 17.4 90
Whiskey Park 8950 25.3 25.0 101 29.0 26.4 110
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Basin Index (%) 90 112
UPPER GREEN RIVER
Big Sandy Opening 9080 20.3 12.2 166 22.6 12.5 181
Blind Bull Sum 8650 41.7 21.8 191 -M 18.5 *
East Rim Divide 7930 17.4 9.8 178 20.5 11.2 183
Elkhart Park G.S. 9400 18.7 11.7 160 23.5 12.5 188
Gros Ventre Summit 8750 -M 12.6 * -M 12.2 *
Gunsight Pass 9820 21.2 13.1 162 23.1 12.9 179
Kendall R.S. 7740 20.6 11.3 182 28.2 13.6 207
Loomis Park 8240 26.9 14.4 187 31.5 16.4 192
New Fork Lake 8340 16.1 10.2 158 17.2 10.2 169
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 18.2 11.8 154 26.1 13.4 195
Spring Creek Divide 9000 38.6 22.4 172 38.5 22.6 170
Triple Peak 8500 35.1 21.1 166 39.2 24.0 163
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Basin Index (%) 172 181
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.7 -M * 15.1 -M *
Buck Pasture 9632 17.0 -M * 22.5 -M *
EF Blacks Fork GS 9360 14.6 -M * 16.1 -M *
Hams Fork 7840 13.9 10.6 131 19.6 10.8 181
Hewinta 9500 7.9 10.4 76 16.0 13.1 122
Hickerson Park 9122 8.5 7.2 118 11.5 9.4 122
Hole-in-Rock 9168 6.4 7.0 91 12.1 8.9 136
Indian Creek 9425 38.8 23.2 167 -M 21.3 *
Kelley R.S. 8180 24.5 14.7 167 29.3 17.2 170
Spirit Lk 10235 15.0 -M * 17.4 -M *
Steel Creek Park 10158 17.5 14.6 120 19.6 15.3 128
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Basin Index (%) 134 145
UPPER BEAR RIVER
Bear River RS 8777 9.6 -M * 17.7 -M *
Bug Lake 7987 30.3 17.9 169 32.1 18.3 175
Burts Miller Ranch 8000 3.1 -M * 9.3 -M *
Chalk Creek #1 9171 32.2 22.7 142 34.6 23.6 147
Hayden Fork 9130 19.5 14.8 132 28.6 19.7 145
Kelley R.S. 8180 24.5 14.7 167 29.3 17.2 170
Lily Lake 9133 13.3 11.9 112 19.2 16.0 120
Monte Cristo 8932 34.0 25.6 133 37.0 24.5 151
Salt River Summit 7760 19.6 12.7 154 27.8 15.8 176
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Basin Index (%) 144 154
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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.