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 17 , 2011
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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 .1 100* 3.0 1.0 300
COTTONWOOD CREEK 7670 .1 .2 50* 4.2 1.4 300
GRAND TARGHEE 9260 2.6 -M * 4.6 -M *
GRANITE CREEK 6770 .1 .1 100* 2.2 .8 275
GRASSY LAKE 7265 .1 .4 25* 5.1 1.6 319
GROS VENTRE SUMMIT 8750 .2 .7 29* 1.8 1.0 180
GUNSIGHT PASS 9820 .9 -M * 2.3 -M *
LEWIS LAKE DIVIDE 7850 .4 .2 200* 4.0 1.4 286
PHILLIPS BENCH 8200 .0 .3 0* 2.4 1.1 218
SALT RIVER SUMMIT 7760 .1 .0 * 2.1 .9 233
SNAKE RIVER STATION 6920 .1 .0 * 3.3 1.1 300
SPRING CREEK DIVIDE 9000 1.4 .4 350* 3.1 1.1 282
THUMB DIVIDE 7980 .1 .2 50* 2.2 1.1 200
TOGWOTEE PASS 9580 1.4 1.2 117* 2.7 1.4 193
TWO OCEAN PLATEAU 9240 3.1 1.4 221* 3.3 1.5 220
WILLOW CREEK 8380 .7 .6 117* 4.7 1.8 261
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Basin wide percent of average 136* 256
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 1.2 1.5 80* 2.0 1.0 200
BLACK BEAR 8170 1.9 .9 211* 4.8 1.6 300
CANYON 7870 .0 .3 0* 1.5 .8 188
FISHER CREEK 9100 1.5 1.1 136* 3.4 1.5 227
MADISON PLATEAU 7750 .0 .5 0* 3.6 1.3 277
NORTHEAST ENTRANCE 7350 .0 .1 0* 1.6 .8 200
PARKER PEAK 9400 .8 1.5 53* 2.0 1.3 154
SYLVAN LAKE 8420 .4 1.0 40* 3.5 1.3 269
THUMB DIVIDE 7980 .1 .2 50* 2.2 1.1 200
TWO OCEAN PLATEAU 9240 3.1 1.4 221* 3.3 1.5 220
WHISKEY CREEK 6800 .1 .1 100* 3.2 1.0 320
WHITE MILL 8700 .8 .8 100* 2.7 1.3 208
WOLVERINE 7650 .0 .2 0* 1.6 1.0 160
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Basin wide percent of average 103* 228
WIND RIVER
BURROUGHS CREEK 8750 .0 .3 0* 1.2 .8 150
CASTLE CREEK 8400 .0 -M * 1.1 -M *
COLD SPRINGS 9630 .3 .4 75* 1.5 .9 167
DEER PARK 9700 .7 1.1 64* 2.3 1.1 209
HOBBS PARK 10100 1.7 1.1 155* 2.3 1.1 209
LITTLE WARM 9370 .0 .5 0* 1.3 .9 144
SOUTH PASS 9040 .7 .6 117* 2.1 1.0 210
ST. LAWRENCE ALT 8620 .0 .3 0* 1.0 .9 111
TOGWOTEE PASS 9580 1.4 1.2 117* 2.7 1.4 193
TOWNSEND CREEK 8700 .2 .5 40* 2.4 1.1 218
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Basin wide percent of average 83* 183
BIGHORN BASIN
BALD MTN. 9380 2.9 1.7 171* 3.1 1.3 238
BEAR TRAP MEADOW 8200 .5 .3 167* 1.1 .9 122
BLACKWATER 9780 2.8 1.8 156* 2.9 1.4 207
BONE SPRINGS DIV 9350 3.0 1.5 200* 3.5 1.4 250
EVENING STAR 9200 .4 1.4 29* 2.7 1.4 193
GRAVE SPRINGS 8550 .4 .4 100* 1.6 1.2 133
KIRWIN 9550 1.5 1.0 150* 2.7 .9 300
MARQUETTE 8760 .3 -M * 3.0 1.2 250
MIDDLE POWDER 7760 .5 .8 63* 3.2 1.4 229
OWL CREEK 8975 .9 .5 180* 1.3 .6 217
POWDER RIVER PASS 9480 1.6 .6 267* 2.5 1.1 227
SHELL CREEK 9580 3.5 1.7 206 3.1 1.1 282
SYLVAN LAKE 8420 .4 1.0 40* 3.5 1.3 269
SYLVAN ROAD 7120 .0 .2 0* 1.6 .9 178
TIMBER CREEK 7950 .1 .6 17 3.3 .8 413
YOUNTS PEAK 8350 .0 .6 0* 2.2 1.0 220
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Basin wide percent of average 131* 231
SHOSHONE RIVER
BLACKWATER 9780 2.8 1.8 156* 2.9 1.4 207
EVENING STAR 9200 .4 1.4 29* 2.7 1.4 193
KIRWIN 9550 1.5 1.0 150* 2.7 .9 300
MARQUETTE 8760 .3 -M * 3.0 1.2 250
SYLVAN LAKE 8420 .4 1.0 40* 3.5 1.3 269
SYLVAN ROAD 7120 .0 .2 0* 1.6 .9 178
YOUNTS PEAK 8350 .0 .6 0* 2.2 1.0 220
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Basin wide percent of average 85* 230
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .5 .3 167* 1.1 .9 122
BIG GOOSE 7990 1.5 .4 375* 3.6 1.2 300
BONE SPRINGS DIV 9350 3.0 1.5 200* 3.5 1.4 250
BURGESS JUNCTION 7880 1.4 .8 175* 3.4 1.2 283
CLOUD PEAK RESERVOIR 9860 1.4 .7 200* 3.0 1.4 214
DOME LAKE 8880 2.1 1.0 210* 3.9 1.4 279
GRAVE SPRINGS 8550 .4 .4 100* 1.6 1.2 133
HANSEN SAWMILL 8360 .0 .4 0* 1.5 1.0 150
LITTLE GOOSE 8870 1.5 -M * 4.0 -M *
MIDDLE POWDER 7760 .5 .8 63* 3.2 1.4 229
POWDER RIVER PASS 9480 1.6 .6 267* 2.5 1.1 227
SOLDIER PARK 8720 .0 -M * 2.2 -M *
SUCKER CREEK 8880 2.4 .7 343* 3.4 1.3 262
TIE CREEK 6870 .1 .3 33* 4.0 1.5 267
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Basin wide percent of average 189* 231
BELLE FOURCHE
BLIND PARK 6890 .1 .1 100* .9 1.3 69
COLE CANYON 5910 .0 .4 0* 1.2 1.0 120
NORTH RAPID CREEK 6130 .0 .2 0* .5 1.4 36
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Basin wide percent of average 14* 70
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 1.4 -M * 2.6 -M *
CINNABAR PARK 9574 .3 .4 75* 1.9 1.1 173
COLUMBINE 9160 .1 .1 100* 1.4 1.1 127
DIVIDE PEAK 8880 .1 .8 13* 1.9 1.4 136
ELK RIVER 8700 .0 .2 0* 1.4 1.1 127
JOE WRIGHT 10120 .0 1.0 0* 1.6 1.7 94
NORTH FRENCH CREEK 10130 1.2 1.5 80* 2.3 1.5 153
OLD BATTLE 10000 1.4 1.3 108* 2.4 1.7 141
SAGE CREEK BASIN 7850 .0 .4 0* 1.4 .8 175
SOUTH BRUSH CREEK 8440 .1 .2 50* 1.6 1.3 123
TOWER 10500 .0 1.2 0* 2.2 1.7 129
WEBBER SPRINGS 9250 .1 .6 17* 2.2 1.5 147
WILLOW CREEK PASS 9540 .0 .4 0* 4.9 1.0 490
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Basin wide percent of average 41* 158
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .2 1.0 20* 2.1 1.2 175
CASPER MTN. 7900 1.2 .7 171* 3.4 1.2 283
DEADMAN HILL 10220 .7 1.1 64* 1.5 1.3 115
DEER PARK 9700 .7 1.1 64* 2.3 1.1 209
LAPRELE CREEK 8375 .0 .3 0* 1.8 .9 200
RENO HILL 8400 1.1 .8 138* 2.4 1.2 200
ROACH 9700 .7 .3 233* 2.0 1.2 167
SAND LAKE 10050 1.8 1.5 120* 2.0 1.5 133
SOUTH PASS 9040 .7 .6 117* 2.1 1.0 210
WINDY PEAK 7900 .1 .1 100* 1.1 .9 122
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Basin wide percent of average 96* 180
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 .0 * 1.0 .9 111
DIVIDE PEAK 8880 .1 .8 13* 1.9 1.4 136
OLD BATTLE 10000 1.4 1.3 108* 2.4 1.7 141
SANDSTONE RS 8150 .0 .1 0* .9 1.1 82
WHISKEY PARK 8950 .1 .6 17* 1.9 1.5 127
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Basin wide percent of average 61* 123
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .8 .5 160* 1.9 .9 211
BLIND BULL SUM 8650 .7 .5 140* 2.0 1.0 200
EAST RIM DIVIDE 7930 .3 .1 300* 1.9 .7 271
ELKHART PARK G.S. 9400 .8 .3 267* 2.5 1.0 250
GROS VENTRE SUMMIT 8750 .2 .7 29* 1.8 1.0 180
GUNSIGHT PASS 9820 .9 -M * 2.3 -M *
KENDALL R.S. 7740 .1 .0 * 2.1 .8 263
LOOMIS PARK 8240 .2 .3 67* 2.3 .9 256
NEW FORK LAKE 8340 .4 .1 400* 2.4 .8 300
POCKET CREEK 9360 1.2 -M * 2.5 -M *
SNIDER BASIN 8060 .1 .2 50* 1.6 .7 229
SPRING CREEK DIVIDE 9000 1.4 .4 350* 3.1 1.1 282
TRIPLE PEAK 8500 .2 .3 67* 2.8 1.1 255
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Basin wide percent of average 153* 244
LOWER GREEN RIVER
HAMS FORK 7840 .2 .0 * 2.4 .7 343
HEWINTA 9519 .2 .4 50* 2.6 1.2 217
HICKERSON PARK 9145 -M .1 * -M .9 *
HOLE-IN-ROCK 9150 .4 .1 400* 2.8 .9 311
INDIAN CREEK 9425 1.9 .5 380* 2.9 1.2 242
KELLEY R.S. 8180 .5 .3 167* 2.8 1.0 280
STEEL CREEK PARK 10200 -M .8 * -M 1.2 *
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Basin wide percent of average 246* 270
UPPER BEAR RIVER
BUG LAKE 7950 -M .6 * -M 1.2 *
HAYDEN FORK 9212 .2 .4 50* 3.6 1.2 300
KELLEY R.S. 8180 .5 .3 167* 2.8 1.0 280
LILY LAKE 9156 .3 .5 60* 2.5 1.2 208
MONTE CRISTO 8960 -M .8 * -M 1.4 *
SALT RIVER SUMMIT 7760 .1 .0 * 2.1 .9 233
TRIAL LAKE 9992 .7 .9 78* 2.3 1.4 164
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Basin wide percent of average 86* 233
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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.