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: OCTOBER 29 , 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 .1 .5 20 2.6 1.8 144
COTTONWOOD CREEK 7670 -M .7 * -M 2.6 *
GRAND TARGHEE 9260 5.8 -M * 4.9 -M *
GRANITE CREEK 6770 .1 .4 25 2.5 1.5 167
GRASSY LAKE 7265 .7 1.1 64 3.3 2.9 114
GROS VENTRE SUMMIT 8750 1.9 1.2 158 2.1 1.6 131
GUNSIGHT PASS 9820 1.5 -M * 2.9 -M *
LEWIS LAKE DIVIDE 7850 .5 .9 56 3.3 2.7 122
PHILLIPS BENCH 8200 1.0 1.1 91 3.1 2.0 155
SALT RIVER SUMMIT 7760 .0 .3 0 2.3 1.7 135
SNAKE RIVER STATION 6920 .1 .4 25 2.9 2.0 145
SPRING CREEK DIVIDE 9000 3.1 1.2 258 3.8 2.2 173
THUMB DIVIDE 7980 .6 .6 100 3.7 1.8 206
TOGWOTEE PASS 9580 3.9 2.2 177 4.0 2.5 160
TWO OCEAN PLATEAU 9240 4.3 2.6 165 3.2 2.7 119
WILLOW CREEK 8380 2.0 1.5 133 5.4 3.3 164
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Basin wide percent of average 131 147
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 3.2 2.4 133 2.6 1.9 137
BLACK BEAR 8170 4.2 2.3 183 5.5 3.0 183
CANYON 7870 1.2 .5 240 2.5 1.6 156
FISHER CREEK 9100 4.2 2.2 191 4.5 2.9 155
MADISON PLATEAU 7750 1.9 1.4 136 4.8 2.2 218
NORTHEAST ENTRANCE 7350 .1 .2 50 2.4 1.4 171
PARKER PEAK 9400 3.8 2.3 165 3.0 2.1 143
SYLVAN LAKE 8420 1.0 1.6 62 2.8 2.3 122
THUMB DIVIDE 7980 .6 .6 100 3.7 1.8 206
TWO OCEAN PLATEAU 9240 4.3 2.6 165 3.2 2.7 119
WHISKEY CREEK 6800 .1 .6 17 3.0 1.9 158
WHITE MILL 8700 3.5 1.6 219 3.3 2.4 138
WOLVERINE 7650 .6 .3 200 1.8 1.6 112
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Basin wide percent of average 154 155
WIND RIVER
BURROUGHS CREEK 8750 2.8 .8 350 2.8 1.4 200
COLD SPRINGS 9630 2.6 .9 289 2.8 1.7 165
DEER PARK 9700 4.6 1.8 256 5.5 2.2 250
HOBBS PARK 10100 5.0 2.1 238 4.6 1.9 242
LITTLE WARM 9370 1.5 .9 167 2.3 1.5 153
SOUTH PASS 9040 3.9 1.3 300 4.7 1.8 261
ST. LAWRENCE ALT 8620 1.9 .8 237 3.6 1.5 240
TOGWOTEE PASS 9580 3.9 2.2 177 4.0 2.5 160
TOWNSEND CREEK 8700 3.3 1.0 330 4.7 1.9 247
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Basin wide percent of average 250 213
BIGHORN BASIN
BALD MTN. 9380 3.6 2.4 150 3.1 2.2 141
BEAR TRAP MEADOW 8200 1.0 .5 200 2.0 1.6 125
BLACKWATER 9780 4.1 2.8 146 3.4 2.4 142
BONE SPRINGS DIV 9350 3.0 2.3 130 2.8 2.3 122
EVENING STAR 9200 4.4 2.2 200 5.0 2.4 208
GRAVE SPRINGS 8550 2.3 1.1 209 3.4 1.9 179
KIRWIN 9550 2.8 1.7 165 2.4 1.6 150
MARQUETTE 8760 2.6 1.8 144 2.8 2.1 133
MIDDLE POWDER 7760 2.5 1.2 208 2.9 2.3 126
OWL CREEK 8975 2.2 .8 275 1.9 1.0 190
POWDER RIVER PASS 9480 2.0 1.1 182 2.2 1.8 122
SHELL CREEK 9580 3.2 2.5 128 2.8 1.8 156
SYLVAN LAKE 8420 1.0 1.6 62 2.8 2.3 122
SYLVAN ROAD 7120 .4 .4 100 2.5 1.8 139
TIMBER CREEK 7950 1.1 1.0 110 2.4 1.4 171
YOUNTS PEAK 8350 1.6 1.2 133 2.0 1.6 125
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Basin wide percent of average 154 146
SHOSHONE RIVER
BLACKWATER 9780 4.1 2.8 146 3.4 2.4 142
EVENING STAR 9200 4.4 2.2 200 5.0 2.4 208
KIRWIN 9550 2.8 1.7 165 2.4 1.6 150
MARQUETTE 8760 2.6 1.8 144 2.8 2.1 133
SYLVAN LAKE 8420 1.0 1.6 62 2.8 2.3 122
SYLVAN ROAD 7120 .4 .4 100 2.5 1.8 139
YOUNTS PEAK 8350 1.6 1.2 133 2.0 1.6 125
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Basin wide percent of average 144 147
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.0 .5 200 2.0 1.6 125
BIG GOOSE 7990 1.4 .7 200 2.8 2.0 140
BONE SPRINGS DIV 9350 3.0 2.3 130 2.8 2.3 122
BURGESS JUNCTION 7880 2.9 1.3 223 3.3 2.0 165
CLOUD PEAK RESERVOIR 9860 2.9 1.4 207 3.2 2.4 133
DOME LAKE 8880 2.0 1.6 125 2.9 2.2 132
GRAVE SPRINGS 8550 2.3 1.1 209 3.4 1.9 179
HANSEN SAWMILL 8360 1.1 .8 138 2.0 1.7 118
MIDDLE POWDER 7760 2.5 1.2 208 2.9 2.3 126
POWDER RIVER PASS 9480 2.0 1.1 182 2.2 1.8 122
SUCKER CREEK 8880 3.2 1.2 267 3.7 2.2 168
TIE CREEK 6870 1.1 .8 138 3.7 2.3 161
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Basin wide percent of average 181 141
BELLE FOURCHE
BLIND PARK 6890 .7 .4 175 3.4 2.3 148
COLE CANYON 5910 .5 .8 62 3.8 1.7 224
NORTH RAPID CREEK 6130 .8 .4 200 3.4 2.3 148
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Basin wide percent of average 125 168
UPPER N. PLATTE RIVER
COLUMBINE 9160 .8 .6 133 3.4 2.1 162
DIVIDE PEAK 8880 2.2 1.5 147 4.8 2.4 200
ELK RIVER 8700 .3 .5 60 2.8 2.0 140
JOE WRIGHT 10120 3.6 2.2 164 4.2 3.0 140
NORTH FRENCH CREEK 10130 6.7 2.8 239 7.0 2.9 241
OLD BATTLE 10000 6.7 2.6 258 6.9 3.1 223
SAGE CREEK BASIN 7850 1.0 .9 111 2.6 1.4 186
SOUTH BRUSH CREEK 8440 .8 .6 133 3.8 2.4 158
TOWER 10500 6.7 2.9 231 6.8 3.4 200
WEBBER SPRINGS 9250 3.1 1.5 207 5.8 2.7 215
WILLOW CREEK PASS 9540 .6 1.0 60 2.3 1.8 128
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Basin wide percent of average 190 185
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.5 1.9 237 5.4 2.1 257
CASPER MTN. 7900 2.6 1.5 173 3.7 2.2 168
DEADMAN HILL 10220 1.0 1.9 53 4.3 2.2 195
DEER PARK 9700 4.6 1.8 256 5.5 2.2 250
LAPRELE CREEK 8375 1.4 .8 175 3.3 1.7 194
RENO HILL 8400 3.2 1.5 213 4.2 2.3 183
ROACH 9700 3.0 .9 333 4.5 2.1 214
SAND LAKE 10050 7.0 2.8 250 7.2 2.7 267
SOUTH PASS 9040 3.9 1.3 300 4.7 1.8 261
WINDY PEAK 7900 1.5 .5 300 3.5 1.5 233
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Basin wide percent of average 219 223
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .4 0 1.8 1.7 106
DIVIDE PEAK 8880 2.2 1.5 147 4.8 2.4 200
OLD BATTLE 10000 6.7 2.6 258 6.9 3.1 223
SANDSTONE RS 8150 .0 .4 0 2.1 2.1 100
WHISKEY PARK 8950 2.0 1.4 143 5.6 2.6 215
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Basin wide percent of average 173 178
UPPER GREEN RIVER
BIG SANDY OPENING 9080 2.9 1.0 290 3.1 1.6 194
BLIND BULL SUM 8650 2.5 1.3 192 2.4 1.9 126
EAST RIM DIVIDE 7930 .1 .5 20 1.8 1.2 150
ELKHART PARK G.S. 9400 2.1 .7 300 2.7 1.8 150
GROS VENTRE SUMMIT 8750 1.9 1.2 158 2.1 1.6 131
GUNSIGHT PASS 9820 1.5 -M * 2.9 -M *
KENDALL R.S. 7740 .2 .5 40 2.0 1.4 143
LOOMIS PARK 8240 .3 .7 43 2.4 1.6 150
NEW FORK LAKE 8340 .1 .4 25 1.4 1.4 100
SNIDER BASIN 8060 .9 .6 150 2.5 1.4 179
SPRING CREEK DIVIDE 9000 3.1 1.2 258 3.8 2.2 173
TRIPLE PEAK 8500 2.6 .9 289 4.1 1.9 216
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Basin wide percent of average 186 157
LOWER GREEN RIVER
HAMS FORK 7840 .4 .3 133 3.0 1.2 250
HEWINTA 9519 .7 .8 87 2.2 2.1 105
HICKERSON PARK 9145 2.0 .4 500 2.8 1.5 187
HOLE-IN-ROCK 9150 1.8 .4 450 3.2 1.5 213
INDIAN CREEK 9425 4.2 1.2 350 4.4 2.2 200
KELLEY R.S. 8180 -M .8 * -M 1.9 *
STEEL CREEK PARK 10200 .5 1.4 36 2.8 2.1 133
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Basin wide percent of average 213 174
UPPER BEAR RIVER
BUG LAKE 7950 .3 1.1 27 3.2 2.1 152
HAYDEN FORK 9212 .6 .8 75 2.6 2.1 124
KELLEY R.S. 8180 -M .8 * -M 1.9 *
LILY LAKE 9156 .5 .9 56 2.1 2.1 100
MONTE CRISTO 8960 1.8 1.4 129 3.8 2.5 152
SALT RIVER SUMMIT 7760 .0 .3 0 2.3 1.7 135
TRIAL LAKE 9992 2.3 1.7 135 2.8 2.4 117
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Basin wide percent of average 89 130
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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.