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: NOVEMBER 2 , 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 .7 43 2.5 2.1 119
COTTONWOOD CREEK 7670 -M 1.0 * -M 3.1 *
GRAND TARGHEE 9260 6.2 -M * 5.5 -M *
GRANITE CREEK 6770 .0 .6 0 2.6 1.8 144
GRASSY LAKE 7265 1.1 1.5 73 3.9 3.5 111
GROS VENTRE SUMMIT 8750 2.1 1.4 150 2.2 1.9 116
GUNSIGHT PASS 9820 1.8 -M * 3.0 -M *
LEWIS LAKE DIVIDE 7850 .9 1.3 69 3.8 3.3 115
PHILLIPS BENCH 8200 1.2 1.5 80 3.4 2.5 136
SALT RIVER SUMMIT 7760 .1 .4 25 2.5 2.0 125
SNAKE RIVER STATION 6920 .2 .6 33 3.1 2.3 135
SPRING CREEK DIVIDE 9000 3.5 1.6 219 4.1 2.7 152
THUMB DIVIDE 7980 1.0 .9 111 4.1 2.1 195
TOGWOTEE PASS 9580 4.2 2.7 156 4.3 2.9 148
TWO OCEAN PLATEAU 9240 4.7 3.2 147 3.7 3.2 116
WILLOW CREEK 8380 2.1 1.9 111 5.5 3.8 145
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Basin wide percent of average 117 134
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 3.7 2.7 137 3.1 2.2 141
BLACK BEAR 8170 4.8 2.9 166 6.0 3.6 167
CANYON 7870 1.4 .7 200 2.9 1.9 153
FISHER CREEK 9100 4.9 2.8 175 5.4 3.4 159
MADISON PLATEAU 7750 2.2 1.7 129 5.1 2.6 196
NORTHEAST ENTRANCE 7350 .3 .3 100 2.7 1.6 169
PARKER PEAK 9400 4.8 2.6 185 3.9 2.4 162
SYLVAN LAKE 8420 1.5 2.0 75 3.1 2.7 115
THUMB DIVIDE 7980 1.0 .9 111 4.1 2.1 195
TWO OCEAN PLATEAU 9240 4.7 3.2 147 3.7 3.2 116
WHISKEY CREEK 6800 .2 .8 25 3.2 2.3 139
WHITE MILL 8700 4.0 2.1 190 3.8 2.8 136
WOLVERINE 7650 .2 .5 40 2.1 1.9 111
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Basin wide percent of average 145 150
WIND RIVER
BURROUGHS CREEK 8750 3.0 1.0 300 2.9 1.7 171
COLD SPRINGS 9630 2.5 1.1 227 3.0 2.0 150
DEER PARK 9700 4.7 2.7 174 5.7 2.6 219
HOBBS PARK 10100 5.0 2.3 217 4.8 2.2 218
LITTLE WARM 9370 1.9 1.1 173 2.4 1.8 133
SOUTH PASS 9040 3.9 1.6 244 4.8 2.2 218
ST. LAWRENCE ALT 8620 1.9 .9 211 3.7 1.8 206
TOGWOTEE PASS 9580 4.2 2.7 156 4.3 2.9 148
TOWNSEND CREEK 8700 3.3 1.1 300 4.8 2.2 218
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Basin wide percent of average 210 188
BIGHORN BASIN
BALD MTN. 9380 3.9 2.8 139 3.3 2.5 132
BEAR TRAP MEADOW 8200 1.3 .6 217 2.2 1.8 122
BLACKWATER 9780 4.5 3.2 141 3.9 2.8 139
BONE SPRINGS DIV 9350 3.3 2.7 122 3.1 2.6 119
EVENING STAR 9200 4.8 2.8 171 5.8 2.9 200
GRAVE SPRINGS 8550 2.5 1.2 208 3.6 2.2 164
KIRWIN 9550 2.9 1.9 153 2.5 1.9 132
MARQUETTE 8760 2.8 2.0 140 3.0 2.4 125
MIDDLE POWDER 7760 2.7 1.3 208 3.0 2.7 111
OWL CREEK 8975 2.4 .9 267 2.0 1.2 167
POWDER RIVER PASS 9480 2.1 1.3 162 2.4 2.0 120
SHELL CREEK 9580 3.5 2.7 130 3.0 2.1 143
SYLVAN LAKE 8420 1.5 2.0 75 3.1 2.7 115
SYLVAN ROAD 7120 .3 .5 60 2.6 2.2 118
TIMBER CREEK 7950 1.2 1.1 109 2.4 1.7 141
YOUNTS PEAK 8350 2.0 1.4 143 2.2 1.9 116
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Basin wide percent of average 147 135
SHOSHONE RIVER
BLACKWATER 9780 4.5 3.2 141 3.9 2.8 139
EVENING STAR 9200 4.8 2.8 171 5.8 2.9 200
KIRWIN 9550 2.9 1.9 153 2.5 1.9 132
MARQUETTE 8760 2.8 2.0 140 3.0 2.4 125
SYLVAN LAKE 8420 1.5 2.0 75 3.1 2.7 115
SYLVAN ROAD 7120 .3 .5 60 2.6 2.2 118
YOUNTS PEAK 8350 2.0 1.4 143 2.2 1.9 116
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Basin wide percent of average 136 138
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.3 .6 217 2.2 1.8 122
BIG GOOSE 7990 1.7 .9 189 3.2 2.2 145
BONE SPRINGS DIV 9350 3.3 2.7 122 3.1 2.6 119
BURGESS JUNCTION 7880 3.0 1.6 188 3.7 2.3 161
CLOUD PEAK RESERVOIR 9860 3.3 1.6 206 3.2 2.7 119
DOME LAKE 8880 2.3 1.9 121 3.2 2.6 123
GRAVE SPRINGS 8550 2.5 1.2 208 3.6 2.2 164
HANSEN SAWMILL 8360 1.3 .9 144 2.1 1.9 111
MIDDLE POWDER 7760 2.7 1.3 208 3.0 2.7 111
POWDER RIVER PASS 9480 2.1 1.3 162 2.4 2.0 120
SUCKER CREEK 8880 3.5 1.4 250 4.2 2.5 168
TIE CREEK 6870 1.1 .9 122 3.9 2.6 150
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Basin wide percent of average 172 135
BELLE FOURCHE
BLIND PARK 6890 1.3 .6 217 4.1 2.7 152
COLE CANYON 5910 .5 1.0 50 4.0 1.9 211
NORTH RAPID CREEK 6130 1.2 .5 240 4.0 2.6 154
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Basin wide percent of average 143 168
UPPER N. PLATTE RIVER
COLUMBINE 9160 1.2 .9 133 4.0 2.5 160
DIVIDE PEAK 8880 2.6 1.8 144 5.3 2.8 189
ELK RIVER 8700 .0 .7 0 3.2 2.3 139
JOE WRIGHT 10120 4.0 2.7 148 5.0 3.5 143
NORTH FRENCH CREEK 10130 7.0 3.3 212 7.2 3.5 206
OLD BATTLE 10000 7.3 3.2 228 7.7 3.7 208
SAGE CREEK BASIN 7850 1.3 1.0 130 2.8 1.6 175
SOUTH BRUSH CREEK 8440 1.0 .8 125 4.2 2.7 156
TOWER 10500 7.4 3.7 200 7.4 4.1 180
WEBBER SPRINGS 9250 3.4 2.0 170 6.2 3.2 194
WILLOW CREEK PASS 9540 .6 1.2 50 3.1 2.1 148
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Basin wide percent of average 168 175
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.9 2.3 213 5.6 2.6 215
CASPER MTN. 7900 3.3 1.8 183 3.9 2.6 150
DEADMAN HILL 10220 1.3 2.3 57 4.7 2.6 181
DEER PARK 9700 4.7 2.7 174 5.7 2.6 219
LAPRELE CREEK 8375 1.6 1.1 145 3.5 2.0 175
RENO HILL 8400 3.7 1.8 206 4.8 2.6 185
ROACH 9700 3.6 1.3 277 5.2 2.4 217
SAND LAKE 10050 7.7 3.4 226 7.9 3.2 247
SOUTH PASS 9040 3.9 1.6 244 4.8 2.2 218
WINDY PEAK 7900 1.6 .6 267 3.7 1.8 206
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Basin wide percent of average 192 202
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .6 0 2.1 2.0 105
DIVIDE PEAK 8880 2.6 1.8 144 5.3 2.8 189
OLD BATTLE 10000 7.3 3.2 228 7.7 3.7 208
SANDSTONE RS 8150 .0 .6 0 2.4 2.4 100
WHISKEY PARK 8950 2.2 1.8 122 5.8 3.0 193
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Basin wide percent of average 151 168
UPPER GREEN RIVER
BIG SANDY OPENING 9080 3.0 1.3 231 3.2 1.9 168
BLIND BULL SUM 8650 2.7 1.8 150 2.4 2.3 104
EAST RIM DIVIDE 7930 .2 .7 29 2.0 1.4 143
ELKHART PARK G.S. 9400 2.4 .9 267 2.9 2.0 145
GROS VENTRE SUMMIT 8750 2.1 1.4 150 2.2 1.9 116
GUNSIGHT PASS 9820 1.8 -M * 3.0 -M *
KENDALL R.S. 7740 .2 .7 29 2.1 1.6 131
LOOMIS PARK 8240 .5 1.0 50 2.4 1.9 126
NEW FORK LAKE 8340 .3 .6 50 2.1 1.6 131
SNIDER BASIN 8060 1.1 .8 138 2.8 1.7 165
SPRING CREEK DIVIDE 9000 3.5 1.6 219 4.1 2.7 152
TRIPLE PEAK 8500 2.9 1.3 223 4.5 2.3 196
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Basin wide percent of average 156 144
LOWER GREEN RIVER
HAMS FORK 7840 .3 .5 60 3.0 1.5 200
HEWINTA 9519 .4 .9 44 2.4 2.5 96
HICKERSON PARK 9145 2.1 .5 420 3.1 1.8 172
HOLE-IN-ROCK 9150 1.5 .5 300 3.7 1.7 218
INDIAN CREEK 9425 4.7 1.6 294 5.0 2.7 185
KELLEY R.S. 8180 1.3 1.0 130 3.7 2.2 168
STEEL CREEK PARK 10200 1.4 1.7 82 3.1 2.4 129
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Basin wide percent of average 175 162
UPPER BEAR RIVER
BUG LAKE 7950 .5 1.3 38 3.3 2.4 138
HAYDEN FORK 9212 .4 .9 44 2.9 2.5 116
KELLEY R.S. 8180 1.3 1.0 130 3.7 2.2 168
LILY LAKE 9156 .7 1.0 70 2.3 2.5 92
MONTE CRISTO 8960 2.0 1.7 118 4.0 2.9 138
SALT RIVER SUMMIT 7760 .1 .4 25 2.5 2.0 125
TRIAL LAKE 9992 2.5 2.0 125 2.9 2.9 100
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Basin wide percent of average 90 124
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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.