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 22 , 2007
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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 1.2 .3 400* -M 1.4 *
COTTONWOOD CREEK 7600 2.1 .5 420* 4.9 2.1 233
GRANITE CREEK 6770 1.4 .3 467* 4.0 1.2 333
GRASSY LAKE 7265 1.5 .8 188* 5.9 2.4 246
GROS VENTRE SUMMIT 8750 1.8 .9 200* 3.9 1.3 300
LEWIS LAKE DIVIDE 7850 1.5 .6 250* 5.7 2.2 259
PHILLIPS BENCH 8200 1.7 .7 243* 4.8 1.7 282
SALT RIVER SUMMIT 7600 .2 .2 100* 2.3 1.4 164
SNAKE RIVER STATION 6920 .6 .2 300* 4.6 1.6 287
SPRING CREEK DIVIDE 9000 1.9 .8 237* 3.2 1.8 178
THUMB DIVIDE 7980 1.1 .4 275* 4.2 1.4 300
TOGWOTEE PASS 9580 4.6 1.7 271* 5.4 2.0 270
TWO OCEAN PLATEAU 9240 5.8 2.0 290* 6.0 2.2 273
WILLOW CREEK 8450 3.0 1.0 300* 6.3 2.6 242
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Basin wide percent of average 273* 256
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 4.4 1.9 232* 4.3 1.5 287
BLACK BEAR 8170 3.8 1.7 224* 5.9 2.4 246
CANYON 8090 1.3 .4 325* 3.9 1.3 300
FISHER CREEK 9100 -M 1.7 * 6.6 2.3 287
MADISON PLATEAU 7750 1.7 .9 189* 4.6 1.8 256
NORTHEAST ENTRANCE 7350 .3 .2 150* 3.2 1.1 291
PARKER PEAK 9400 -M 1.8 * 5.2 1.6 325
SYLVAN LAKE 8420 2.1 1.4 150* 5.6 1.8 311
THUMB DIVIDE 7980 1.1 .4 275* 4.2 1.4 300
TWO OCEAN PLATEAU 9240 5.8 2.0 290* 6.0 2.2 273
WHISKEY CREEK 6800 1.0 .4 250* 4.3 1.6 269
WHITE MILL 8700 -M 1.3 * 4.7 1.9 247
WOLVERINE 7650 .9 .3 300* 3.1 1.3 238
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Basin wide percent of average 233* 277
WIND RIVER
BURROUGHS CREEK 8750 1.9 .6 317* 3.7 1.2 308
COLD SPRINGS 9630 .3 .6 50* 2.3 1.4 164
DEER PARK 9700 1.3 1.6 81* 3.1 1.8 172
HOBBS PARK 10100 1.4 1.4 100* 2.8 1.5 187
LITTLE WARM 9370 1.1 .7 157* 3.0 1.2 250
SOUTH PASS 9040 .2 .9 22* 2.4 1.5 160
ST. LAWRENCE ALT 8620 .0 .4 0* 1.3 1.2 108
TOGWOTEE PASS 9580 4.6 1.7 271* 5.4 2.0 270
TOWNSEND CREEK 8700 .1 .6 17* 2.6 1.5 173
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Basin wide percent of average 128* 200
BIGHORN BASIN
BALD MTN. 9380 2.9 2.0 145* 3.1 1.7 182
BEAR TRAP MEADOW 8200 .6 .4 150* 1.8 1.2 150
BLACKWATER 9780 4.9 2.2 223* 4.6 1.9 242
BONE SPRINGS DIV 9350 2.1 1.9 111 3.8 1.8 211
EVENING STAR 9200 4.2 1.9 221* -M 2.0 *
GRAVE SPRINGS 8550 1.2 .6 200* 2.5 1.5 167
KIRWIN 9550 3.3 1.3 254* 4.7 1.3 362
MARQUETTE 8760 .8 1.4 57 2.8 1.6 175
MIDDLE POWDER 7760 2.4 .9 267* 2.4 1.8 133
OWL CREEK 8975 .6 .5 120* 2.4 .8 300
POWDER RIVER PASS 9480 1.2 .8 150* 2.9 1.4 207
SHELL CREEK 9580 3.6 2.1 171 -M 1.4 *
SYLVAN LAKE 8420 2.1 1.4 150* 5.6 1.8 311
SYLVAN ROAD 7120 .6 .3 200* -M 1.5 *
TIMBER CREEK 7950 .4 .5 80* 3.1 1.2 258
YOUNTS PEAK 8350 2.0 .9 222* -M 1.3 *
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Basin wide percent of average 172* 221
SHOSHONE RIVER
BLACKWATER 9780 4.9 2.2 223* 4.6 1.9 242
EVENING STAR 9200 4.2 1.9 221* -M 2.0 *
KIRWIN 9550 3.3 1.3 254* 4.7 1.3 362
MARQUETTE 8760 .8 1.4 57 2.8 1.6 175
SYLVAN LAKE 8420 2.1 1.4 150* 5.6 1.8 311
SYLVAN ROAD 7120 .6 .3 200* -M 1.5 *
YOUNTS PEAK 8350 2.0 .9 222* -M 1.3 *
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Basin wide percent of average 190* 268
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .6 .4 150* 1.8 1.2 150
BIG GOOSE 7990 1.8 .5 360* 3.8 1.5 253
BONE SPRINGS DIV 9350 2.1 1.9 111 3.8 1.8 211
BURGESS JUNCTION 7880 1.5 1.0 150* 3.2 1.6 200
CLOUD PEAK RESERVOIR 9860 3.0 .9 333* 4.6 1.8 256
DOME LAKE 8880 1.9 1.2 158* 4.3 1.8 239
GRAVE SPRINGS 8550 1.2 .6 200* 2.5 1.5 167
HANSEN SAWMILL 8360 1.2 .5 240* 2.6 1.3 200
MIDDLE POWDER 7760 2.4 .9 267* 2.4 1.8 133
POWDER RIVER PASS 9480 1.2 .8 150* 2.9 1.4 207
SUCKER CREEK 8880 1.8 .9 200* 3.2 1.7 188
TIE CREEK 6870 .4 .4 100* 2.8 1.8 156
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Basin wide percent of average 191* 197
BELLE FOURCHE
BLIND PARK 6890 .2 .2 100* 1.4 1.8 78
COLE CANYON 5910 .0 .4 0* .8 -M *
NORTH RAPID CREEK 6130 .0 .3 0* 1.0 1.8 56
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Basin wide percent of average 22* 67
UPPER N. PLATTE RIVER
COLUMBINE 9160 .4 .4 100* 3.3 1.7 194
DIVIDE PEAK 8860 1.4 1.2 117* -M 1.9 *
ELK RIVER 8700 .0 .3 0* 2.9 1.6 181
JOE WRIGHT 10120 2.1 1.6 131* 4.7 2.4 196
NORTH FRENCH CREEK 10130 2.3 2.2 105* 3.7 2.4 154
OLD BATTLE 9920 2.5 2.0 125* 3.8 2.5 152
SAGE CREEK BASIN 7850 .4 .6 67* 2.2 1.1 200
SOUTH BRUSH CREEK 8440 1.2 .4 300* 3.0 1.8 167
TOWER 10500 2.8 2.1 133* 4.6 2.8 164
WEBBER SPRINGS 9250 1.4 1.1 127* 3.4 2.2 155
WILLOW CREEK PASS 9540 2.0 .7 286* 2.9 1.4 207
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Basin wide percent of average 131* 173
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 1.0 1.5 67* 2.5 1.8 139
CASPER MTN. 7850 1.5 1.1 136* 3.2 1.8 178
DEADMAN HILL 10220 2.1 1.5 140* 3.2 1.8 178
DEER PARK 9700 1.3 1.6 81* 3.1 1.8 172
LAPRELE CREEK 8375 .6 .6 100* 2.0 1.4 143
RENO HILL 8500 2.0 1.2 167* 3.4 1.8 189
ROACH 9700 1.9 .7 271* 3.0 1.6 188
SAND LAKE 10050 3.5 2.2 159* 4.0 2.2 182
SOUTH PASS 9040 .2 .9 22* 2.4 1.5 160
WINDY PEAK 7900 .6 .3 200* 1.6 1.2 133
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Basin wide percent of average 127* 168
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .4 .2 200* 1.8 1.4 129
DIVIDE PEAK 8860 1.4 1.2 117* -M 1.9 *
OLD BATTLE 9920 2.5 2.0 125* 3.8 2.5 152
SANDSTONE RS 8150 .3 .3 100* 2.2 1.6 138
WHISKEY PARK 8950 1.3 1.0 130* 3.7 2.0 185
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Basin wide percent of average 126* 153
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .6 .8 75* 1.8 1.3 138
BLIND BULL SUM 8900 1.8 1.0 180* 3.1 1.6 194
EAST RIM DIVIDE 7930 .3 .3 100* 1.9 .9 211
ELKHART PARK G.S. 9400 .8 .5 160* 2.0 1.4 143
GROS VENTRE SUMMIT 8750 1.8 .9 200* 3.9 1.3 300
KENDALL R.S. 7740 .6 .3 200* 2.3 1.1 209
LOOMIS PARK 8240 .9 .5 180* 2.3 1.3 177
NEW FORK LAKE 8340 .6 .2 300* 1.9 1.1 173
SNIDER BASIN 8060 .3 .4 75* 1.7 1.2 142
SPRING CREEK DIVIDE 9000 1.9 .8 237* 3.2 1.8 178
TRIPLE PEAK 8500 1.4 .7 200* 4.3 1.6 269
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Basin wide percent of average 172* 195
LOWER GREEN RIVER
HAMS FORK 7840 .1 .2 50* 1.5 1.0 150
HEWINTA 9500 .0 .6 0* 4.2 1.7 247
HICKERSON PARK 9100 .2 .2 100* 2.6 1.2 217
HOLE-IN-ROCK 9150 .1 .2 50* 3.3 1.2 275
INDIAN CREEK 9425 1.5 .9 167* 2.5 1.8 139
KELLEY R.S. 8180 .6 .5 120* 2.7 1.5 180
STEEL CREEK PARK 10100 3.7 1.2 308* 4.6 1.6 287
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Basin wide percent of average 163* 214
UPPER BEAR RIVER
BUG LAKE 7950 .2 .8 25* 1.1 1.6 69
HAYDEN FORK 9100 .6 .6 100* 3.3 1.7 194
KELLEY R.S. 8180 .6 .5 120* 2.7 1.5 180
LILY LAKE 9050 .5 .6 83* 3.4 1.7 200
MONTE CRISTO 8960 .8 1.1 73* 3.1 2.0 155
SALT RIVER SUMMIT 7600 .2 .2 100* 2.3 1.4 164
TRIAL LAKE 9960 1.3 1.3 100* 2.6 2.0 130
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Basin wide percent of average 82* 155
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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 1971-2000.
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.