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 TUESDAY: NOVEMBER 3 , 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 .8 37 2.6 2.2 118
COTTONWOOD CREEK 7670 .4 1.1 36 4.4 3.3 133
GRAND TARGHEE 9260 6.2 -M * 5.6 -M *
GRANITE CREEK 6770 .0 .6 0 2.6 1.9 137
GRASSY LAKE 7265 1.0 1.7 59 3.8 3.6 106
GROS VENTRE SUMMIT 8750 2.1 1.5 140 2.2 2.0 110
GUNSIGHT PASS 9820 1.7 -M * 3.0 -M *
LEWIS LAKE DIVIDE 7850 .9 1.5 60 3.8 3.4 112
PHILLIPS BENCH 8200 1.3 1.6 81 3.4 2.6 131
SALT RIVER SUMMIT 7760 .1 .4 25 2.5 2.1 119
SNAKE RIVER STATION 6920 .1 .7 14 3.0 2.4 125
SPRING CREEK DIVIDE 9000 3.4 1.7 200 4.1 2.8 146
THUMB DIVIDE 7980 .9 .9 100 4.1 2.2 186
TOGWOTEE PASS 9580 4.2 2.8 150 4.3 3.0 143
TWO OCEAN PLATEAU 9240 4.7 3.3 142 3.7 3.3 112
WILLOW CREEK 8380 2.1 2.1 100 5.5 4.0 138
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Basin wide percent of average 104 129
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 3.8 2.9 131 3.2 2.3 139
BLACK BEAR 8170 4.8 3.0 160 6.0 3.8 158
CANYON 7870 1.4 .7 200 3.0 2.0 150
FISHER CREEK 9100 5.0 2.9 172 5.5 3.6 153
MADISON PLATEAU 7750 2.2 1.8 122 5.1 2.7 189
NORTHEAST ENTRANCE 7350 .2 .3 67 2.7 1.7 159
PARKER PEAK 9400 4.8 2.8 171 3.9 2.5 156
SYLVAN LAKE 8420 1.5 2.1 71 3.1 2.8 111
THUMB DIVIDE 7980 .9 .9 100 4.1 2.2 186
TWO OCEAN PLATEAU 9240 4.7 3.3 142 3.7 3.3 112
WHISKEY CREEK 6800 .0 .9 0 3.3 2.4 138
WHITE MILL 8700 4.0 2.1 190 3.8 2.9 131
WOLVERINE 7650 .0 .6 0 2.2 2.0 110
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Basin wide percent of average 137 145
WIND RIVER
BURROUGHS CREEK 8750 2.9 1.1 264 2.9 1.8 161
COLD SPRINGS 9630 2.5 1.2 208 3.0 2.1 143
DEER PARK 9700 4.7 2.7 174 5.8 2.7 215
HOBBS PARK 10100 5.1 2.4 212 4.9 2.3 213
LITTLE WARM 9370 1.9 1.1 173 2.5 1.9 132
SOUTH PASS 9040 3.9 1.6 244 4.9 2.3 213
ST. LAWRENCE ALT 8620 2.0 1.0 200 3.8 1.9 200
TOGWOTEE PASS 9580 4.2 2.8 150 4.3 3.0 143
TOWNSEND CREEK 8700 3.4 1.2 283 4.9 2.3 213
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Basin wide percent of average 203 182
BIGHORN BASIN
BALD MTN. 9380 4.0 2.9 138 3.3 2.6 127
BEAR TRAP MEADOW 8200 1.3 .6 217 2.2 1.9 116
BLACKWATER 9780 4.5 3.3 136 3.9 2.9 134
BONE SPRINGS DIV 9350 3.3 2.7 122 3.2 2.7 119
EVENING STAR 9200 4.8 3.0 160 5.8 3.0 193
GRAVE SPRINGS 8550 2.5 1.3 192 3.6 2.2 164
KIRWIN 9550 2.9 2.0 145 2.5 2.0 125
MARQUETTE 8760 2.9 2.0 145 3.2 2.5 128
MIDDLE POWDER 7760 2.7 1.4 193 3.2 2.8 114
OWL CREEK 8975 2.5 .9 278 2.0 1.2 167
POWDER RIVER PASS 9480 2.1 1.4 150 2.5 2.1 119
SHELL CREEK 9580 3.5 2.8 125 3.0 2.2 136
SYLVAN LAKE 8420 1.5 2.1 71 3.1 2.8 111
SYLVAN ROAD 7120 .0 .6 0 2.6 2.3 113
TIMBER CREEK 7950 1.2 1.2 100 2.5 1.7 147
YOUNTS PEAK 8350 2.0 1.6 125 2.2 2.0 110
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Basin wide percent of average 140 132
SHOSHONE RIVER
BLACKWATER 9780 4.5 3.3 136 3.9 2.9 134
EVENING STAR 9200 4.8 3.0 160 5.8 3.0 193
KIRWIN 9550 2.9 2.0 145 2.5 2.0 125
MARQUETTE 8760 2.9 2.0 145 3.2 2.5 128
SYLVAN LAKE 8420 1.5 2.1 71 3.1 2.8 111
SYLVAN ROAD 7120 .0 .6 0 2.6 2.3 113
YOUNTS PEAK 8350 2.0 1.6 125 2.2 2.0 110
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Basin wide percent of average 127 133
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.3 .6 217 2.2 1.9 116
BIG GOOSE 7990 1.7 .9 189 3.2 2.2 145
BONE SPRINGS DIV 9350 3.3 2.7 122 3.2 2.7 119
BURGESS JUNCTION 7880 3.0 1.6 188 3.7 2.4 154
CLOUD PEAK RESERVOIR 9860 3.3 1.7 194 3.3 2.8 118
DOME LAKE 8880 2.3 2.0 115 3.3 2.7 122
GRAVE SPRINGS 8550 2.5 1.3 192 3.6 2.2 164
HANSEN SAWMILL 8360 1.4 .9 156 2.2 2.0 110
MIDDLE POWDER 7760 2.7 1.4 193 3.2 2.8 114
POWDER RIVER PASS 9480 2.1 1.4 150 2.5 2.1 119
SUCKER CREEK 8880 3.5 1.5 233 4.2 2.6 162
TIE CREEK 6870 1.2 .9 133 4.0 2.7 148
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Basin wide percent of average 167 133
BELLE FOURCHE
BLIND PARK 6890 1.3 .7 186 4.1 2.8 146
COLE CANYON 5910 .5 1.1 45 4.0 2.0 200
NORTH RAPID CREEK 6130 1.1 .6 183 4.0 2.7 148
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Basin wide percent of average 121 161
UPPER N. PLATTE RIVER
COLUMBINE 9160 1.2 1.0 120 3.9 2.6 150
DIVIDE PEAK 8880 2.6 1.9 137 5.3 2.9 183
ELK RIVER 8700 .0 .7 0 3.2 2.4 133
JOE WRIGHT 10120 3.8 2.8 136 5.0 3.7 135
NORTH FRENCH CREEK 10130 6.9 3.4 203 7.2 3.6 200
OLD BATTLE 10000 7.3 3.3 221 7.7 3.9 197
SAGE CREEK BASIN 7850 1.2 1.1 109 2.8 1.7 165
SOUTH BRUSH CREEK 8440 .9 .8 112 4.1 2.8 146
TOWER 10500 7.3 4.0 182 7.3 4.3 170
WEBBER SPRINGS 9250 3.3 2.1 157 6.2 3.3 188
WILLOW CREEK PASS 9540 .5 1.3 38 3.1 2.2 141
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Basin wide percent of average 156 167
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.8 2.4 200 5.6 2.7 207
CASPER MTN. 7900 3.3 1.9 174 3.9 2.7 144
DEADMAN HILL 10220 1.3 2.4 54 4.7 2.6 181
DEER PARK 9700 4.7 2.7 174 5.8 2.7 215
LAPRELE CREEK 8375 1.7 1.1 155 3.6 2.0 180
RENO HILL 8400 3.9 1.9 205 4.9 2.7 181
ROACH 9700 3.6 1.3 277 5.2 2.5 208
SAND LAKE 10050 7.6 3.6 211 7.8 3.3 236
SOUTH PASS 9040 3.9 1.6 244 4.9 2.3 213
WINDY PEAK 7900 1.6 .7 229 3.8 1.8 211
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Basin wide percent of average 186 198
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .6 0 2.1 2.0 105
DIVIDE PEAK 8880 2.6 1.9 137 5.3 2.9 183
OLD BATTLE 10000 7.3 3.3 221 7.7 3.9 197
SANDSTONE RS 8150 .1 .6 17 2.4 2.5 96
WHISKEY PARK 8950 2.3 1.9 121 5.8 3.2 181
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Basin wide percent of average 148 161
UPPER GREEN RIVER
BIG SANDY OPENING 9080 2.9 1.4 207 3.2 2.0 160
BLIND BULL SUM 8650 2.7 1.9 142 2.4 2.4 100
EAST RIM DIVIDE 7930 .2 .7 29 2.0 1.5 133
ELKHART PARK G.S. 9400 2.3 1.0 230 2.9 2.1 138
GROS VENTRE SUMMIT 8750 2.1 1.5 140 2.2 2.0 110
GUNSIGHT PASS 9820 1.7 -M * 3.0 -M *
KENDALL R.S. 7740 .3 .8 37 2.1 1.7 124
LOOMIS PARK 8240 .4 1.1 36 2.4 2.0 120
NEW FORK LAKE 8340 .3 .7 43 2.1 1.7 124
SNIDER BASIN 8060 1.1 .9 122 2.7 1.8 150
SPRING CREEK DIVIDE 9000 3.4 1.7 200 4.1 2.8 146
TRIPLE PEAK 8500 2.8 1.4 200 4.5 2.4 188
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Basin wide percent of average 141 137
LOWER GREEN RIVER
HAMS FORK 7840 .2 .5 40 3.1 1.5 207
HEWINTA 9519 -M .9 * 2.3 2.5 92
HICKERSON PARK 9145 2.0 .5 400 3.1 1.8 172
HOLE-IN-ROCK 9150 1.3 .5 260 3.6 1.8 200
INDIAN CREEK 9425 4.4 1.8 244 4.9 2.8 175
KELLEY R.S. 8180 1.2 1.1 109 3.6 2.3 157
STEEL CREEK PARK 10200 1.4 1.8 78 3.1 2.5 124
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Basin wide percent of average 169 156
UPPER BEAR RIVER
BUG LAKE 7950 .4 1.4 29 3.3 2.5 132
HAYDEN FORK 9212 .2 1.0 20 2.9 2.6 112
KELLEY R.S. 8180 1.2 1.1 109 3.6 2.3 157
LILY LAKE 9156 .7 1.1 64 2.2 2.6 85
MONTE CRISTO 8960 2.2 1.7 129 4.0 3.0 133
SALT RIVER SUMMIT 7760 .1 .4 25 2.5 2.1 119
TRIAL LAKE 9992 2.5 2.1 119 2.9 3.0 97
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Basin wide percent of average 83 118
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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.