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 MONDAY: OCTOBER 26 , 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 -M .6 * -M 2.3 *
GRAND TARGHEE 9260 4.8 -M * 4.3 -M *
GRANITE CREEK 6770 .2 .3 67 2.4 1.3 185
GRASSY LAKE 7265 .3 .9 33 2.9 2.5 116
GROS VENTRE SUMMIT 8750 1.8 1.0 180 2.0 1.4 143
GUNSIGHT PASS 9820 1.4 -M * 2.8 -M *
LEWIS LAKE DIVIDE 7850 -M .7 * -M 2.3 *
PHILLIPS BENCH 8200 .6 .9 67 2.8 1.7 165
SALT RIVER SUMMIT 7760 .0 .2 0 2.3 1.5 153
SNAKE RIVER STATION 6920 .0 .3 0 2.6 1.7 153
SPRING CREEK DIVIDE 9000 2.8 1.0 280 3.5 1.8 194
THUMB DIVIDE 7980 .2 .5 40 3.4 1.6 212
TOGWOTEE PASS 9580 3.4 1.9 179 3.5 2.1 167
TWO OCEAN PLATEAU 9240 3.8 2.3 165 2.9 2.3 126
WILLOW CREEK 8380 1.5 1.2 125 4.9 2.9 169
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Basin wide percent of average 135 159
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 2.7 2.1 129 2.0 1.6 125
BLACK BEAR 8170 3.8 1.8 211 5.1 2.5 204
CANYON 7870 .9 .4 225 2.3 1.4 164
FISHER CREEK 9100 3.5 1.9 184 3.7 2.5 148
MADISON PLATEAU 7750 1.8 1.0 180 4.5 2.0 225
NORTHEAST ENTRANCE 7350 .0 .2 0 2.1 1.2 175
PARKER PEAK 9400 3.4 2.2 155 2.6 1.9 137
SYLVAN LAKE 8420 .5 1.4 36 2.3 2.0 115
THUMB DIVIDE 7980 .2 .5 40 3.4 1.6 212
TWO OCEAN PLATEAU 9240 3.8 2.3 165 2.9 2.3 126
WHISKEY CREEK 6800 .2 .4 50 2.9 1.7 171
WHITE MILL 8700 3.0 1.3 231 2.5 2.0 125
WOLVERINE 7650 .3 .3 100 1.5 1.5 100
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Basin wide percent of average 153 156
WIND RIVER
BURROUGHS CREEK 8750 2.7 .6 450 2.5 1.3 192
COLD SPRINGS 9630 2.5 .8 312 2.7 1.5 180
DEER PARK 9700 3.0 1.7 176 3.9 2.0 195
HOBBS PARK 10100 3.3 1.9 174 3.1 1.7 182
LITTLE WARM 9370 1.4 .8 175 2.1 1.4 150
SOUTH PASS 9040 2.6 1.2 217 3.4 1.6 212
ST. LAWRENCE ALT 8620 .8 .7 114 2.8 1.4 200
TOGWOTEE PASS 9580 3.4 1.9 179 3.5 2.1 167
TOWNSEND CREEK 8700 1.8 .8 225 3.2 1.7 188
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Basin wide percent of average 207 185
BIGHORN BASIN
BALD MTN. 9380 -M 2.2 * -M 1.9 *
BEAR TRAP MEADOW 8200 .8 .5 160 1.7 1.4 121
BLACKWATER 9780 3.6 2.5 144 2.9 2.1 138
BONE SPRINGS DIV 9350 2.1 2.0 105 2.2 2.0 110
EVENING STAR 9200 3.9 2.0 195 4.5 2.1 214
GRAVE SPRINGS 8550 2.0 .9 222 3.0 1.7 176
KIRWIN 9550 2.4 1.5 160 1.9 1.4 136
MARQUETTE 8760 2.3 1.5 153 2.3 1.9 121
MIDDLE POWDER 7760 2.0 1.0 200 2.4 2.1 114
OWL CREEK 8975 2.1 .7 300 1.7 .9 189
POWDER RIVER PASS 9480 1.9 .9 211 2.0 1.5 133
SHELL CREEK 9580 2.8 2.2 127 2.5 1.6 156
SYLVAN LAKE 8420 .5 1.4 36 2.3 2.0 115
SYLVAN ROAD 7120 .0 .3 0 2.0 1.5 133
TIMBER CREEK 7950 .8 .8 100 2.0 1.3 154
YOUNTS PEAK 8350 1.3 1.1 118 1.8 1.5 120
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Basin wide percent of average 148 141
SHOSHONE RIVER
BLACKWATER 9780 3.6 2.5 144 2.9 2.1 138
EVENING STAR 9200 3.9 2.0 195 4.5 2.1 214
KIRWIN 9550 2.4 1.5 160 1.9 1.4 136
MARQUETTE 8760 2.3 1.5 153 2.3 1.9 121
SYLVAN LAKE 8420 .5 1.4 36 2.3 2.0 115
SYLVAN ROAD 7120 .0 .3 0 2.0 1.5 133
YOUNTS PEAK 8350 1.3 1.1 118 1.8 1.5 120
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Basin wide percent of average 136 142
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .8 .5 160 1.7 1.4 121
BIG GOOSE 7990 .7 .6 117 2.1 1.8 117
BONE SPRINGS DIV 9350 2.1 2.0 105 2.2 2.0 110
BURGESS JUNCTION 7880 2.2 1.2 183 2.7 1.8 150
CLOUD PEAK RESERVOIR 9860 2.4 1.3 185 2.2 2.1 105
DOME LAKE 8880 -M 1.4 * -M 2.0 *
GRAVE SPRINGS 8550 2.0 .9 222 3.0 1.7 176
HANSEN SAWMILL 8360 1.2 .6 200 1.9 1.5 127
MIDDLE POWDER 7760 2.0 1.0 200 2.4 2.1 114
POWDER RIVER PASS 9480 1.9 .9 211 2.0 1.5 133
SUCKER CREEK 8880 2.4 1.0 240 2.8 2.0 140
TIE CREEK 6870 .5 .6 83 2.9 2.1 138
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Basin wide percent of average 172 130
BELLE FOURCHE
BLIND PARK 6890 .3 .2 150 3.0 2.0 150
COLE CANYON 5910 .1 .6 17 3.3 1.5 220
NORTH RAPID CREEK 6130 .4 .3 133 2.9 2.0 145
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Basin wide percent of average 73 167
UPPER N. PLATTE RIVER
COLUMBINE 9160 .2 .4 50 3.0 1.8 167
DIVIDE PEAK 8880 .6 1.3 46 3.6 2.1 171
ELK RIVER 8700 .0 .4 0 2.6 1.7 153
JOE WRIGHT 10120 2.7 1.8 150 3.3 2.7 122
NORTH FRENCH CREEK 10130 6.2 2.4 258 6.5 2.5 260
OLD BATTLE 10000 5.7 2.2 259 6.1 2.7 226
SAGE CREEK BASIN 7850 .0 .8 0 2.4 1.2 200
SOUTH BRUSH CREEK 8440 .4 .4 100 3.5 2.1 167
TOWER 10500 6.2 2.3 270 6.0 2.9 207
WEBBER SPRINGS 9250 1.8 1.2 150 4.6 2.3 200
WILLOW CREEK PASS 9540 .6 .8 75 1.9 1.6 119
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Basin wide percent of average 174 184
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.0 1.6 250 4.8 1.8 267
CASPER MTN. 7900 .4 1.3 31 2.6 2.0 130
DEADMAN HILL 10220 .1 1.7 6 3.1 2.0 155
DEER PARK 9700 3.0 1.7 176 3.9 2.0 195
LAPRELE CREEK 8375 .2 .7 29 2.3 1.5 153
RENO HILL 8400 1.3 1.3 100 2.6 2.0 130
ROACH 9700 1.7 .7 243 3.2 1.8 178
SAND LAKE 10050 5.5 2.4 229 5.6 2.3 243
SOUTH PASS 9040 2.6 1.2 217 3.4 1.6 212
WINDY PEAK 7900 .6 .3 200 2.5 1.3 192
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Basin wide percent of average 150 186
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .3 0 1.6 1.5 107
DIVIDE PEAK 8880 .6 1.3 46 3.6 2.1 171
OLD BATTLE 10000 5.7 2.2 259 6.1 2.7 226
SANDSTONE RS 8150 -M .3 * 2.0 1.8 111
WHISKEY PARK 8950 1.7 1.2 142 5.0 2.3 217
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Basin wide percent of average 160 176
UPPER GREEN RIVER
BIG SANDY OPENING 9080 2.7 .9 300 2.9 1.4 207
BLIND BULL SUM 8650 2.2 1.1 200 2.2 1.6 138
EAST RIM DIVIDE 7930 .1 .3 33 1.8 1.0 180
ELKHART PARK G.S. 9400 2.1 .6 350 2.6 1.5 173
GROS VENTRE SUMMIT 8750 1.8 1.0 180 2.0 1.4 143
GUNSIGHT PASS 9820 1.4 -M * 2.8 -M *
KENDALL R.S. 7740 .0 .4 0 2.0 1.2 167
LOOMIS PARK 8240 .2 .6 33 2.3 1.4 164
NEW FORK LAKE 8340 .0 .3 0 1.4 1.2 117
SNIDER BASIN 8060 .7 .5 140 2.4 1.2 200
SPRING CREEK DIVIDE 9000 2.8 1.0 280 3.5 1.8 194
TRIPLE PEAK 8500 2.4 .7 343 3.7 1.7 218
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Basin wide percent of average 203 174
LOWER GREEN RIVER
HAMS FORK 7840 -M .2 * -M 1.1 *
HEWINTA 9519 -M .7 * 1.2 1.9 63
HICKERSON PARK 9145 .0 .3 0 1.0 1.3 77
HOLE-IN-ROCK 9150 .0 .3 0 1.6 1.3 123
INDIAN CREEK 9425 -M 1.0 * -M 1.9 *
KELLEY R.S. 8180 .8 .6 133 3.1 1.6 194
STEEL CREEK PARK 10200 -M 1.3 * 1.5 1.8 83
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Basin wide percent of average 67* 106
UPPER BEAR RIVER
BUG LAKE 7950 -M .9 * -M 1.8 *
HAYDEN FORK 9212 .2 .6 33 2.1 1.9 111
KELLEY R.S. 8180 .8 .6 133 3.1 1.6 194
LILY LAKE 9156 .0 .8 0 1.5 1.9 79
MONTE CRISTO 8960 -M 1.2 * -M 2.2 *
SALT RIVER SUMMIT 7760 .0 .2 0 2.3 1.5 153
TRIAL LAKE 9992 1.7 1.4 121 2.6 2.1 124
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Basin wide percent of average 75 129
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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.