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 SUNDAY: OCTOBER 25 , 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 .0 .3 0 2.2 1.5 147
COTTONWOOD CREEK 7670 .0 .5 0 3.6 2.2 164
GRAND TARGHEE 9260 4.8 -M * 4.2 -M *
GRANITE CREEK 6770 .2 .3 67 2.3 1.2 192
GRASSY LAKE 7265 .1 .8 12 3.0 2.4 125
GROS VENTRE SUMMIT 8750 1.7 1.0 170 2.0 1.4 143
GUNSIGHT PASS 9820 1.5 -M * 2.7 -M *
LEWIS LAKE DIVIDE 7850 .6 .6 100 3.0 2.2 136
PHILLIPS BENCH 8200 .6 .8 75 2.8 1.7 165
SALT RIVER SUMMIT 7760 .0 .1 0 2.3 1.4 164
SNAKE RIVER STATION 6920 .0 .3 0 2.6 1.6 162
SPRING CREEK DIVIDE 9000 2.9 .9 322 3.6 1.7 212
THUMB DIVIDE 7980 .2 .4 50 3.4 1.5 227
TOGWOTEE PASS 9580 3.5 1.8 194 3.5 2.0 175
TWO OCEAN PLATEAU 9240 3.6 2.1 171 2.9 2.2 132
WILLOW CREEK 8380 1.6 1.1 145 4.9 2.7 181
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Basin wide percent of average 136 164
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 2.8 2.1 133 2.2 1.5 147
BLACK BEAR 8170 3.7 1.6 231 5.1 2.4 212
CANYON 7870 .9 .4 225 2.2 1.3 169
FISHER CREEK 9100 3.4 1.8 189 3.6 2.3 157
MADISON PLATEAU 7750 1.7 .9 189 4.4 1.9 232
NORTHEAST ENTRANCE 7350 .0 .1 0 2.1 1.1 191
PARKER PEAK 9400 3.4 2.1 162 2.7 1.8 150
SYLVAN LAKE 8420 .5 1.3 38 2.3 1.9 121
THUMB DIVIDE 7980 .2 .4 50 3.4 1.5 227
TWO OCEAN PLATEAU 9240 3.6 2.1 171 2.9 2.2 132
WHISKEY CREEK 6800 .1 .3 33 2.8 1.6 175
WHITE MILL 8700 2.9 1.3 223 2.7 2.0 135
WOLVERINE 7650 .2 .3 67 1.5 1.4 107
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Basin wide percent of average 159 166
WIND RIVER
BURROUGHS CREEK 8750 2.8 .6 467 2.5 1.2 208
COLD SPRINGS 9630 2.5 .8 312 2.7 1.4 193
DEER PARK 9700 2.7 1.2 225 3.7 1.9 195
HOBBS PARK 10100 3.3 1.7 194 -M 1.6 *
LITTLE WARM 9370 1.5 .8 188 2.1 1.3 162
SOUTH PASS 9040 2.4 1.1 218 3.3 1.5 220
ST. LAWRENCE ALT 8620 1.0 .6 167 2.8 1.3 215
TOGWOTEE PASS 9580 3.5 1.8 194 3.5 2.0 175
TOWNSEND CREEK 8700 2.0 .7 286 3.1 1.6 194
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Basin wide percent of average 233 194
BIGHORN BASIN
BALD MTN. 9380 3.0 2.1 143 2.5 1.8 139
BEAR TRAP MEADOW 8200 .8 .5 160 1.7 1.4 121
BLACKWATER 9780 3.6 2.4 150 3.0 2.0 150
BONE SPRINGS DIV 9350 2.0 2.0 100 2.2 1.9 116
EVENING STAR 9200 3.9 1.9 205 4.4 2.0 220
GRAVE SPRINGS 8550 1.7 .8 212 2.7 1.7 159
KIRWIN 9550 2.3 1.4 164 1.9 1.3 146
MARQUETTE 8760 2.2 1.4 157 2.2 1.8 122
MIDDLE POWDER 7760 1.8 1.0 180 2.3 2.0 115
OWL CREEK 8975 2.2 .7 314 1.7 .9 189
POWDER RIVER PASS 9480 1.8 .9 200 2.0 1.5 133
SHELL CREEK 9580 2.8 2.2 127 2.4 1.5 160
SYLVAN LAKE 8420 .5 1.3 38 2.3 1.9 121
SYLVAN ROAD 7120 .0 .3 0 2.1 1.4 150
TIMBER CREEK 7950 .9 .8 112 2.0 1.2 167
YOUNTS PEAK 8350 1.3 1.0 130 1.9 1.4 136
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Basin wide percent of average 149 145
SHOSHONE RIVER
BLACKWATER 9780 3.6 2.4 150 3.0 2.0 150
EVENING STAR 9200 3.9 1.9 205 4.4 2.0 220
KIRWIN 9550 2.3 1.4 164 1.9 1.3 146
MARQUETTE 8760 2.2 1.4 157 2.2 1.8 122
SYLVAN LAKE 8420 .5 1.3 38 2.3 1.9 121
SYLVAN ROAD 7120 .0 .3 0 2.1 1.4 150
YOUNTS PEAK 8350 1.3 1.0 130 1.9 1.4 136
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Basin wide percent of average 142 151
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .8 .5 160 1.7 1.4 121
BIG GOOSE 7990 .7 .6 117 2.1 1.7 124
BONE SPRINGS DIV 9350 2.0 2.0 100 2.2 1.9 116
BURGESS JUNCTION 7880 1.9 1.1 173 2.3 1.7 135
CLOUD PEAK RESERVOIR 9860 2.2 1.1 200 2.1 2.1 100
DOME LAKE 8880 1.5 1.3 115 2.2 1.9 116
GRAVE SPRINGS 8550 1.7 .8 212 2.7 1.7 159
HANSEN SAWMILL 8360 1.2 .5 240 1.8 1.4 129
MIDDLE POWDER 7760 1.8 1.0 180 2.3 2.0 115
POWDER RIVER PASS 9480 1.8 .9 200 2.0 1.5 133
SUCKER CREEK 8880 2.2 .9 244 2.6 1.9 137
TIE CREEK 6870 .3 .5 60 2.7 2.0 135
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Basin wide percent of average 162 126
BELLE FOURCHE
BLIND PARK 6890 .3 .2 150 3.0 2.0 150
COLE CANYON 5910 .1 .6 17 3.1 1.4 221
NORTH RAPID CREEK 6130 .5 .3 167 2.9 2.0 145
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Basin wide percent of average 82 167
UPPER N. PLATTE RIVER
COLUMBINE 9160 .2 .3 67 3.0 1.7 176
DIVIDE PEAK 8880 .6 1.2 50 3.5 2.0 175
ELK RIVER 8700 .0 .3 0 2.6 1.6 162
JOE WRIGHT 10120 2.7 1.7 159 3.0 2.6 115
NORTH FRENCH CREEK 10130 6.1 2.3 265 6.3 2.4 262
OLD BATTLE 10000 5.7 2.0 285 6.1 2.6 235
SAGE CREEK BASIN 7850 .0 .7 0 2.3 1.2 192
SOUTH BRUSH CREEK 8440 .4 .4 100 3.6 2.0 180
TOWER 10500 6.2 2.1 295 6.2 2.8 221
WEBBER SPRINGS 9250 1.8 1.1 164 4.5 2.2 205
WILLOW CREEK PASS 9540 .3 .7 43 1.7 1.5 113
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Basin wide percent of average 188 189
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.0 1.5 267 4.6 1.8 256
CASPER MTN. 7900 .0 1.2 0 2.4 1.9 126
DEADMAN HILL 10220 .1 1.6 6 2.9 1.9 153
DEER PARK 9700 2.7 1.2 225 3.7 1.9 195
LAPRELE CREEK 8375 .2 .6 33 2.2 1.4 157
RENO HILL 8400 .8 1.3 62 2.2 1.9 116
ROACH 9700 1.6 .7 229 3.1 1.7 182
SAND LAKE 10050 5.4 2.3 235 5.5 2.2 250
SOUTH PASS 9040 2.4 1.1 218 3.3 1.5 220
WINDY PEAK 7900 .5 .3 167 2.3 1.3 177
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Basin wide percent of average 150 184
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .3 0 1.7 1.4 121
DIVIDE PEAK 8880 .6 1.2 50 3.5 2.0 175
OLD BATTLE 10000 5.7 2.0 285 6.1 2.6 235
SANDSTONE RS 8150 -M .3 * 2.0 1.7 118
WHISKEY PARK 8950 1.6 1.1 145 4.9 2.2 223
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Basin wide percent of average 172 184
UPPER GREEN RIVER
BIG SANDY OPENING 9080 2.8 .8 350 3.1 1.3 238
BLIND BULL SUM 8650 2.3 1.0 230 2.2 1.6 138
EAST RIM DIVIDE 7930 .1 .3 33 1.8 1.0 180
ELKHART PARK G.S. 9400 2.2 .5 440 2.7 1.5 180
GROS VENTRE SUMMIT 8750 1.7 1.0 170 2.0 1.4 143
GUNSIGHT PASS 9820 1.5 -M * 2.7 -M *
KENDALL R.S. 7740 .1 .3 33 2.0 1.1 182
LOOMIS PARK 8240 .3 .5 60 2.3 1.3 177
NEW FORK LAKE 8340 .0 .3 0 1.4 1.1 127
SNIDER BASIN 8060 .7 .4 175 2.4 1.1 218
SPRING CREEK DIVIDE 9000 2.9 .9 322 3.6 1.7 212
TRIPLE PEAK 8500 2.4 .7 343 3.9 1.6 244
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Basin wide percent of average 231 186
LOWER GREEN RIVER
HAMS FORK 7840 .2 .2 100 2.9 1.0 290
HEWINTA 9519 -M .6 * 1.3 1.8 72
HICKERSON PARK 9145 .0 .3 0 1.0 1.3 77
HOLE-IN-ROCK 9150 .0 .3 0 1.5 1.3 115
INDIAN CREEK 9425 4.1 .9 456 4.3 1.8 239
KELLEY R.S. 8180 1.0 .6 167 3.3 1.5 220
STEEL CREEK PARK 10200 1.4 1.2 117 1.5 1.7 88
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Basin wide percent of average 191 152
UPPER BEAR RIVER
BUG LAKE 7950 .1 .9 11 2.7 1.7 159
HAYDEN FORK 9212 .1 .6 17 2.1 1.8 117
KELLEY R.S. 8180 1.0 .6 167 3.3 1.5 220
LILY LAKE 9156 -M .7 * 1.4 1.8 78
MONTE CRISTO 8960 1.5 1.1 136 3.3 2.1 157
SALT RIVER SUMMIT 7760 .0 .1 0 2.3 1.4 164
TRIAL LAKE 9992 2.1 1.4 150 2.6 2.0 130
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Basin wide percent of average 102 144
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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.