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: NOVEMBER 4 , 2009
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 .3 .8 37 2.5 2.3 109
COTTONWOOD CREEK 7670 .3 1.1 27 4.4 3.4 129
GRAND TARGHEE 9260 6.2 -M * 5.6 -M *
GRANITE CREEK 6770 .0 .7 0 2.5 2.0 125
GRASSY LAKE 7265 .9 1.8 50 3.7 3.8 97
GROS VENTRE SUMMIT 8750 2.1 1.6 131 2.3 2.0 115
GUNSIGHT PASS 9820 1.7 -M * 3.0 -M *
LEWIS LAKE DIVIDE 7850 -M 1.6 * -M 3.6 *
PHILLIPS BENCH 8200 1.3 1.7 76 3.3 2.7 122
SALT RIVER SUMMIT 7760 .1 .5 20 2.5 2.2 114
SNAKE RIVER STATION 6920 .0 .8 0 3.0 2.5 120
SPRING CREEK DIVIDE 9000 3.4 1.8 189 4.1 2.9 141
THUMB DIVIDE 7980 .8 1.0 80 4.0 2.3 174
TOGWOTEE PASS 9580 4.2 2.9 145 4.2 3.2 131
TWO OCEAN PLATEAU 9240 4.6 3.4 135 3.6 3.4 106
WILLOW CREEK 8380 1.9 2.2 86 5.5 4.1 134
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Basin wide percent of average 98 124
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 3.7 3.0 123 3.1 2.4 129
BLACK BEAR 8170 4.7 3.1 152 6.0 4.0 150
CANYON 7870 1.5 .8 188 2.9 2.1 138
FISHER CREEK 9100 4.9 3.1 158 5.5 3.7 149
MADISON PLATEAU 7750 2.1 1.8 117 5.1 2.8 182
NORTHEAST ENTRANCE 7350 .0 .4 0 2.7 1.7 159
PARKER PEAK 9400 4.6 2.9 159 3.9 2.6 150
SYLVAN LAKE 8420 1.3 2.3 57 3.1 2.9 107
THUMB DIVIDE 7980 .8 1.0 80 4.0 2.3 174
TWO OCEAN PLATEAU 9240 4.6 3.4 135 3.6 3.4 106
WHISKEY CREEK 6800 .0 .9 0 3.3 2.5 132
WHITE MILL 8700 3.9 2.2 177 3.8 3.0 127
WOLVERINE 7650 .0 .6 0 2.1 2.0 105
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Basin wide percent of average 126 139
WIND RIVER
BURROUGHS CREEK 8750 2.9 1.1 264 2.9 1.9 153
COLD SPRINGS 9630 2.4 1.2 200 3.0 2.2 136
DEER PARK 9700 4.6 2.8 164 5.7 2.9 197
HOBBS PARK 10100 5.0 2.5 200 4.9 2.4 204
LITTLE WARM 9370 1.8 1.2 150 2.4 2.0 120
SOUTH PASS 9040 4.0 1.7 235 4.9 2.4 204
ST. LAWRENCE ALT 8620 1.8 1.1 164 3.8 1.9 200
TOGWOTEE PASS 9580 4.2 2.9 145 4.2 3.2 131
TOWNSEND CREEK 8700 3.2 1.2 267 4.9 2.4 204
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Basin wide percent of average 190 172
BIGHORN BASIN
BALD MTN. 9380 3.9 3.1 126 3.3 2.7 122
BEAR TRAP MEADOW 8200 1.3 .7 186 2.2 1.9 116
BLACKWATER 9780 4.3 3.4 126 3.8 3.0 127
BONE SPRINGS DIV 9350 3.2 2.8 114 3.1 2.8 111
EVENING STAR 9200 4.8 3.1 155 5.7 3.2 178
GRAVE SPRINGS 8550 2.4 1.4 171 3.6 2.3 157
KIRWIN 9550 2.9 2.1 138 2.5 2.0 125
MARQUETTE 8760 2.8 2.1 133 3.0 2.5 120
MIDDLE POWDER 7760 2.6 1.5 173 3.2 2.9 110
OWL CREEK 8975 2.4 1.0 240 2.0 1.3 154
POWDER RIVER PASS 9480 2.1 1.4 150 2.5 2.1 119
SHELL CREEK 9580 3.4 2.9 117 3.0 2.2 136
SYLVAN LAKE 8420 1.3 2.3 57 3.1 2.9 107
SYLVAN ROAD 7120 .0 .6 0 2.6 2.4 108
TIMBER CREEK 7950 1.1 1.3 85 2.5 1.8 139
YOUNTS PEAK 8350 2.1 1.7 124 2.2 2.1 105
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Basin wide percent of average 129 127
SHOSHONE RIVER
BLACKWATER 9780 4.3 3.4 126 3.8 3.0 127
EVENING STAR 9200 4.8 3.1 155 5.7 3.2 178
KIRWIN 9550 2.9 2.1 138 2.5 2.0 125
MARQUETTE 8760 2.8 2.1 133 3.0 2.5 120
SYLVAN LAKE 8420 1.3 2.3 57 3.1 2.9 107
SYLVAN ROAD 7120 .0 .6 0 2.6 2.4 108
YOUNTS PEAK 8350 2.1 1.7 124 2.2 2.1 105
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Basin wide percent of average 119 127
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.3 .7 186 2.2 1.9 116
BIG GOOSE 7990 1.6 1.0 160 3.2 2.3 139
BONE SPRINGS DIV 9350 3.2 2.8 114 3.1 2.8 111
BURGESS JUNCTION 7880 2.9 1.8 161 3.7 2.4 154
CLOUD PEAK RESERVOIR 9860 3.3 1.9 174 3.3 2.9 114
DOME LAKE 8880 2.2 2.1 105 3.2 2.8 114
GRAVE SPRINGS 8550 2.4 1.4 171 3.6 2.3 157
HANSEN SAWMILL 8360 1.2 1.0 120 2.1 2.0 105
MIDDLE POWDER 7760 2.6 1.5 173 3.2 2.9 110
POWDER RIVER PASS 9480 2.1 1.4 150 2.5 2.1 119
SUCKER CREEK 8880 3.4 1.6 212 4.2 2.6 162
TIE CREEK 6870 1.1 .9 122 4.0 2.7 148
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Basin wide percent of average 151 129
BELLE FOURCHE
BLIND PARK 6890 1.1 .8 138 4.1 2.8 146
COLE CANYON 5910 .3 1.1 27 4.0 2.0 200
NORTH RAPID CREEK 6130 1.1 .6 183 4.0 2.7 148
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Basin wide percent of average 100 161
UPPER N. PLATTE RIVER
COLUMBINE 9160 1.2 1.1 109 4.0 2.7 148
DIVIDE PEAK 8880 2.6 2.0 130 5.3 3.0 177
ELK RIVER 8700 .0 .8 0 3.2 2.4 133
JOE WRIGHT 10120 3.6 2.9 124 5.0 3.8 132
NORTH FRENCH CREEK 10130 6.9 3.5 197 7.2 3.7 195
OLD BATTLE 10000 7.3 3.5 209 7.7 4.0 192
SAGE CREEK BASIN 7850 1.2 1.2 100 2.8 1.8 156
SOUTH BRUSH CREEK 8440 .8 .9 89 4.2 2.9 145
TOWER 10500 7.3 4.2 174 7.4 4.5 164
WEBBER SPRINGS 9250 3.4 2.2 155 6.2 3.5 177
WILLOW CREEK PASS 9540 .5 1.4 36 3.0 2.2 136
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Basin wide percent of average 147 162
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.8 2.5 192 5.6 2.8 200
CASPER MTN. 7900 3.1 2.0 155 3.9 2.8 139
DEADMAN HILL 10220 1.2 2.5 48 4.7 2.7 174
DEER PARK 9700 4.6 2.8 164 5.7 2.9 197
LAPRELE CREEK 8375 1.6 1.2 133 3.5 2.1 167
RENO HILL 8400 3.7 1.9 195 4.8 2.8 171
ROACH 9700 3.6 1.4 257 5.1 2.6 196
SAND LAKE 10050 7.6 3.8 200 7.8 3.4 229
SOUTH PASS 9040 4.0 1.7 235 4.9 2.4 204
WINDY PEAK 7900 1.5 .7 214 3.7 1.9 195
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Basin wide percent of average 174 188
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 .6 17 2.1 2.1 100
DIVIDE PEAK 8880 2.6 2.0 130 5.3 3.0 177
OLD BATTLE 10000 7.3 3.5 209 7.7 4.0 192
SANDSTONE RS 8150 .0 .6 0 2.4 2.6 92
WHISKEY PARK 8950 2.3 2.1 110 5.8 3.3 176
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Basin wide percent of average 140 155
UPPER GREEN RIVER
BIG SANDY OPENING 9080 3.0 1.4 214 3.2 2.0 160
BLIND BULL SUM 8650 2.7 2.0 135 2.4 2.5 96
EAST RIM DIVIDE 7930 .2 .8 25 2.0 1.5 133
ELKHART PARK G.S. 9400 2.3 1.0 230 2.9 2.2 132
GROS VENTRE SUMMIT 8750 2.1 1.6 131 2.3 2.0 115
GUNSIGHT PASS 9820 1.7 -M * 3.0 -M *
KENDALL R.S. 7740 .2 .9 22 2.0 1.8 111
LOOMIS PARK 8240 .4 1.1 36 2.4 2.1 114
NEW FORK LAKE 8340 .3 .7 43 1.9 1.8 106
SNIDER BASIN 8060 1.1 .9 122 2.7 1.8 150
SPRING CREEK DIVIDE 9000 3.4 1.8 189 4.1 2.9 141
TRIPLE PEAK 8500 3.0 1.5 200 4.4 2.5 176
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Basin wide percent of average 136 131
LOWER GREEN RIVER
HAMS FORK 7840 .2 .5 40 3.1 1.6 194
HEWINTA 9519 -M 1.0 * 2.3 2.6 88
HICKERSON PARK 9145 2.0 .6 333 3.1 1.9 163
HOLE-IN-ROCK 9150 1.2 .6 200 3.7 1.8 206
INDIAN CREEK 9425 4.5 1.9 237 4.9 2.9 169
KELLEY R.S. 8180 1.2 1.2 100 3.6 2.4 150
STEEL CREEK PARK 10200 1.5 1.8 83 3.0 2.6 115
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Basin wide percent of average 161 150
UPPER BEAR RIVER
BUG LAKE 7950 .4 1.5 27 3.3 2.6 127
HAYDEN FORK 9212 .2 1.0 20 2.9 2.7 107
KELLEY R.S. 8180 1.2 1.2 100 3.6 2.4 150
LILY LAKE 9156 .7 1.1 64 2.3 2.7 85
MONTE CRISTO 8960 2.3 1.8 128 4.0 3.1 129
SALT RIVER SUMMIT 7760 .1 .5 20 2.5 2.2 114
TRIAL LAKE 9992 2.4 2.2 109 2.9 3.1 94
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Basin wide percent of average 78 114
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
If the Basin wide percent of average 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 Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average 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.
Reference period for average conditions is 1961-90.
Provisional data, subject to revision.
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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.