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: NOVEMBER 1 , 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 .5 .6 83 2.5 2.0 125
COTTONWOOD CREEK 7670 .6 .9 67 4.4 3.0 147
GRAND TARGHEE 9260 6.2 -M * 5.6 -M *
GRANITE CREEK 6770 .1 .5 20 2.6 1.8 144
GRASSY LAKE 7265 1.2 1.4 86 3.9 3.3 118
GROS VENTRE SUMMIT 8750 2.2 1.4 157 2.4 1.8 133
GUNSIGHT PASS 9820 1.8 -M * 3.1 -M *
LEWIS LAKE DIVIDE 7850 .9 1.2 75 3.9 3.1 126
PHILLIPS BENCH 8200 1.3 1.4 93 3.5 2.4 146
SALT RIVER SUMMIT 7760 .3 .4 75 2.6 1.9 137
SNAKE RIVER STATION 6920 .5 .6 83 3.1 2.3 135
SPRING CREEK DIVIDE 9000 3.5 1.5 233 4.2 2.5 168
THUMB DIVIDE 7980 1.0 .8 125 4.1 2.1 195
TOGWOTEE PASS 9580 4.3 2.6 165 4.3 2.8 154
TWO OCEAN PLATEAU 9240 4.8 3.0 160 3.8 3.1 123
WILLOW CREEK 8380 2.1 1.8 117 5.5 3.7 149
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Basin wide percent of average 129 142
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 3.6 2.7 133 3.0 2.1 143
BLACK BEAR 8170 4.7 2.8 168 6.0 3.4 176
CANYON 7870 1.4 .6 233 3.0 1.8 167
FISHER CREEK 9100 5.0 2.7 185 5.5 3.3 167
MADISON PLATEAU 7750 2.3 1.6 144 5.2 2.5 208
NORTHEAST ENTRANCE 7350 .5 .3 167 2.7 1.5 180
PARKER PEAK 9400 4.7 2.6 181 3.8 2.3 165
SYLVAN LAKE 8420 1.6 1.9 84 3.1 2.6 119
THUMB DIVIDE 7980 1.0 .8 125 4.1 2.1 195
TWO OCEAN PLATEAU 9240 4.8 3.0 160 3.8 3.1 123
WHISKEY CREEK 6800 .3 .8 37 3.3 2.2 150
WHITE MILL 8700 4.0 2.0 200 3.8 2.7 141
WOLVERINE 7650 .7 .5 140 2.3 1.8 128
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Basin wide percent of average 155 158
WIND RIVER
BURROUGHS CREEK 8750 3.0 1.0 300 3.0 1.6 188
COLD SPRINGS 9630 2.8 1.0 280 3.0 1.9 158
DEER PARK 9700 4.8 2.3 209 5.9 2.5 236
HOBBS PARK 10100 5.1 2.3 222 4.9 2.1 233
LITTLE WARM 9370 2.1 1.0 210 2.5 1.7 147
SOUTH PASS 9040 4.1 1.5 273 5.0 2.1 238
ST. LAWRENCE ALT 8620 2.2 .9 244 3.8 1.7 224
TOGWOTEE PASS 9580 4.3 2.6 165 4.3 2.8 154
TOWNSEND CREEK 8700 3.5 1.1 318 4.9 2.1 233
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Basin wide percent of average 233 202
BIGHORN BASIN
BALD MTN. 9380 3.9 2.8 139 3.4 2.4 142
BEAR TRAP MEADOW 8200 1.3 .6 217 2.1 1.7 124
BLACKWATER 9780 4.5 3.1 145 3.9 2.7 144
BONE SPRINGS DIV 9350 3.3 2.6 127 3.2 2.5 128
EVENING STAR 9200 4.8 2.7 178 5.7 2.8 204
GRAVE SPRINGS 8550 2.6 1.2 217 3.6 2.1 171
KIRWIN 9550 3.0 1.9 158 2.6 1.8 144
MARQUETTE 8760 3.0 2.0 150 -M 2.3 *
MIDDLE POWDER 7760 2.8 1.3 215 3.2 2.6 123
OWL CREEK 8975 2.4 .9 267 2.0 1.2 167
POWDER RIVER PASS 9480 2.1 1.3 162 2.5 1.9 132
SHELL CREEK 9580 3.5 2.7 130 2.9 2.0 145
SYLVAN LAKE 8420 1.6 1.9 84 3.1 2.6 119
SYLVAN ROAD 7120 .5 .5 100 2.6 2.1 124
TIMBER CREEK 7950 1.4 1.1 127 2.5 1.6 156
YOUNTS PEAK 8350 2.2 1.4 157 2.2 1.8 122
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Basin wide percent of average 153 143
SHOSHONE RIVER
BLACKWATER 9780 4.5 3.1 145 3.9 2.7 144
EVENING STAR 9200 4.8 2.7 178 5.7 2.8 204
KIRWIN 9550 3.0 1.9 158 2.6 1.8 144
MARQUETTE 8760 3.0 2.0 150 -M 2.3 *
SYLVAN LAKE 8420 1.6 1.9 84 3.1 2.6 119
SYLVAN ROAD 7120 .5 .5 100 2.6 2.1 124
YOUNTS PEAK 8350 2.2 1.4 157 2.2 1.8 122
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Basin wide percent of average 145 146
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.3 .6 217 2.1 1.7 124
BIG GOOSE 7990 1.7 .8 212 3.2 2.1 152
BONE SPRINGS DIV 9350 3.3 2.6 127 3.2 2.5 128
BURGESS JUNCTION 7880 3.1 1.5 207 3.8 2.2 173
CLOUD PEAK RESERVOIR 9860 3.2 1.6 200 3.3 2.6 127
DOME LAKE 8880 2.3 1.9 121 3.3 2.5 132
GRAVE SPRINGS 8550 2.6 1.2 217 3.6 2.1 171
HANSEN SAWMILL 8360 1.3 .9 144 2.1 1.8 117
MIDDLE POWDER 7760 2.8 1.3 215 3.2 2.6 123
POWDER RIVER PASS 9480 2.1 1.3 162 2.5 1.9 132
SUCKER CREEK 8880 3.5 1.4 250 4.3 2.4 179
TIE CREEK 6870 1.2 .9 133 3.9 2.5 156
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Basin wide percent of average 178 143
BELLE FOURCHE
BLIND PARK 6890 1.2 .5 240 4.0 2.6 154
COLE CANYON 5910 .8 1.0 80 4.0 1.9 211
NORTH RAPID CREEK 6130 1.2 .5 240 4.0 2.5 160
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Basin wide percent of average 160 171
UPPER N. PLATTE RIVER
COLUMBINE 9160 1.2 .8 150 3.9 2.4 162
DIVIDE PEAK 8880 2.6 1.8 144 5.3 2.7 196
ELK RIVER 8700 .2 .6 33 3.1 2.2 141
JOE WRIGHT 10120 4.2 2.5 168 5.0 3.4 147
NORTH FRENCH CREEK 10130 6.9 3.1 223 7.2 3.3 218
OLD BATTLE 10000 7.3 3.0 243 7.6 3.6 211
SAGE CREEK BASIN 7850 1.2 1.0 120 2.8 1.6 175
SOUTH BRUSH CREEK 8440 1.0 .7 143 4.2 2.6 162
TOWER 10500 7.3 3.5 209 7.4 4.0 185
WEBBER SPRINGS 9250 3.4 1.9 179 6.2 3.1 200
WILLOW CREEK PASS 9540 .7 1.2 58 3.1 2.0 155
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Basin wide percent of average 179 181
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.9 2.2 223 5.6 2.5 224
CASPER MTN. 7900 3.3 1.7 194 3.9 2.5 156
DEADMAN HILL 10220 1.4 2.2 64 4.7 2.5 188
DEER PARK 9700 4.8 2.3 209 5.9 2.5 236
LAPRELE CREEK 8375 1.6 1.0 160 3.6 1.9 189
RENO HILL 8400 3.7 1.7 218 4.9 2.5 196
ROACH 9700 3.6 1.2 300 5.2 2.3 226
SAND LAKE 10050 7.6 3.3 230 7.9 3.0 263
SOUTH PASS 9040 4.1 1.5 273 5.0 2.1 238
WINDY PEAK 7900 1.6 .6 267 3.8 1.7 224
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Basin wide percent of average 207 215
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .5 0 2.1 1.9 111
DIVIDE PEAK 8880 2.6 1.8 144 5.3 2.7 196
OLD BATTLE 10000 7.3 3.0 243 7.6 3.6 211
SANDSTONE RS 8150 .0 .5 0 2.4 2.3 104
WHISKEY PARK 8950 2.2 1.7 129 5.8 2.9 200
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Basin wide percent of average 161 173
UPPER GREEN RIVER
BIG SANDY OPENING 9080 3.2 1.2 267 3.4 1.8 189
BLIND BULL SUM 8650 2.7 1.6 169 2.4 2.2 109
EAST RIM DIVIDE 7930 .3 .6 50 2.0 1.4 143
ELKHART PARK G.S. 9400 2.5 .9 278 2.9 2.0 145
GROS VENTRE SUMMIT 8750 2.2 1.4 157 2.4 1.8 133
GUNSIGHT PASS 9820 1.8 -M * 3.1 -M *
KENDALL R.S. 7740 .4 .7 57 2.1 1.6 131
LOOMIS PARK 8240 .5 .9 56 2.5 1.8 139
NEW FORK LAKE 8340 .4 .6 67 2.4 1.6 150
SNIDER BASIN 8060 1.2 .7 171 2.9 1.6 181
SPRING CREEK DIVIDE 9000 3.5 1.5 233 4.2 2.5 168
TRIPLE PEAK 8500 2.7 1.2 225 4.6 2.2 209
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Basin wide percent of average 173 155
LOWER GREEN RIVER
HAMS FORK 7840 .4 .4 100 3.1 1.4 221
HEWINTA 9519 .9 .9 100 2.4 2.4 100
HICKERSON PARK 9145 2.3 .5 460 3.2 1.7 188
HOLE-IN-ROCK 9150 1.7 .5 340 3.6 1.7 212
INDIAN CREEK 9425 4.6 1.5 307 5.1 2.6 196
KELLEY R.S. 8180 1.3 1.0 130 3.8 2.1 181
STEEL CREEK PARK 10200 1.3 1.6 81 3.1 2.3 135
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Basin wide percent of average 195 171
UPPER BEAR RIVER
BUG LAKE 7950 .5 1.3 38 3.3 2.4 138
HAYDEN FORK 9212 .6 .9 67 2.8 2.4 117
KELLEY R.S. 8180 1.3 1.0 130 3.8 2.1 181
LILY LAKE 9156 .7 1.0 70 2.2 2.4 92
MONTE CRISTO 8960 2.0 1.6 125 4.1 2.8 146
SALT RIVER SUMMIT 7760 .3 .4 75 2.6 1.9 137
TRIAL LAKE 9992 2.5 1.9 132 3.0 2.8 107
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Basin wide percent of average 98 130
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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.