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 SATURDAY: OCTOBER 15 , 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* 2.3 .8 288
COTTONWOOD CREEK 7670 .0 .1 0* 3.6 1.2 300
GRAND TARGHEE 9260 2.3 -M * 3.8 -M *
GRANITE CREEK 6770 .0 .1 0* 1.7 .7 243
GRASSY LAKE 7265 .1 .3 33* 4.0 1.4 286
GROS VENTRE SUMMIT 8750 .1 .6 17* 1.4 .8 175
GUNSIGHT PASS 9820 .7 -M * 1.9 -M *
LEWIS LAKE DIVIDE 7850 .2 .1 200* 3.1 1.2 258
PHILLIPS BENCH 8200 .0 .2 0* 1.7 1.0 170
SALT RIVER SUMMIT 7760 .1 .0 * 1.8 .8 225
SNAKE RIVER STATION 6920 .0 .0 100* 2.5 1.0 250
SPRING CREEK DIVIDE 9000 1.6 .3 533* 3.0 .9 333
THUMB DIVIDE 7980 .0 .1 0* 1.5 .9 167
TOGWOTEE PASS 9580 1.2 1.0 120* 2.1 1.2 175
TWO OCEAN PLATEAU 9240 2.5 1.2 208* 2.6 1.3 200
WILLOW CREEK 8380 .1 .4 25* 3.4 1.6 213
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Basin wide percent of average 133* 234
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 1.1 1.3 85* 1.6 .9 178
BLACK BEAR 8170 2.1 .8 263* 4.3 1.3 331
CANYON 7870 .0 .2 0* 1.5 .7 214
FISHER CREEK 9100 1.6 1.0 160* 2.8 1.3 215
MADISON PLATEAU 7750 .0 .4 0* 3.3 1.1 300
NORTHEAST ENTRANCE 7350 .0 .1 0* 1.1 .7 157
PARKER PEAK 9400 1.2 1.2 100* 1.7 1.1 155
SYLVAN LAKE 8420 .4 .9 44* 2.5 1.1 227
THUMB DIVIDE 7980 .0 .1 0* 1.5 .9 167
TWO OCEAN PLATEAU 9240 2.5 1.2 208* 2.6 1.3 200
WHISKEY CREEK 6800 .2 .1 200* 3.2 .9 356
WHITE MILL 8700 1.4 .7 200* 2.1 1.2 175
WOLVERINE 7650 .0 .1 0* .8 .9 89
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Basin wide percent of average 130* 216
WIND RIVER
BURROUGHS CREEK 8750 .2 .3 67* 1.2 .7 171
CASTLE CREEK 8400 .2 -M * 1.0 -M *
COLD SPRINGS 9630 .2 .2 100* 1.5 .8 188
DEER PARK 9700 1.0 .8 125* 2.3 1.0 230
HOBBS PARK 10100 1.9 .7 271* 2.3 .9 256
LITTLE WARM 9370 .0 .4 0* 1.2 .8 150
SOUTH PASS 9040 1.1 .4 275* 2.1 .8 263
ST. LAWRENCE ALT 8620 .1 .1 100* 1.0 .8 125
TOGWOTEE PASS 9580 1.2 1.0 120* 2.1 1.2 175
TOWNSEND CREEK 8700 .9 .3 300* 2.2 1.0 220
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Basin wide percent of average 157* 199
BIGHORN BASIN
BALD MTN. 9380 2.5 1.5 167* 2.7 1.1 245
BEAR TRAP MEADOW 8200 .9 .2 450* 1.1 .8 138
BLACKWATER 9780 2.1 1.5 140* 2.2 1.2 183
BONE SPRINGS DIV 9350 2.6 1.3 200* 3.2 1.2 267
EVENING STAR 9200 1.0 1.2 83* 2.1 1.2 175
GRAVE SPRINGS 8550 .8 .2 400* 1.5 1.1 136
KIRWIN 9550 1.5 .8 188* 2.3 .8 288
MARQUETTE 8760 .3 -M * 2.5 1.1 227
MIDDLE POWDER 7760 1.4 .6 233* 3.1 1.2 258
OWL CREEK 8975 1.3 .3 433* 1.3 .5 260
POWDER RIVER PASS 9480 1.5 .5 300* 2.2 .9 244
SHELL CREEK 9580 3.1 1.6 194* 2.8 1.0 280
SYLVAN LAKE 8420 .4 .9 44* 2.5 1.1 227
SYLVAN ROAD 7120 .0 .1 0* 1.0 .7 143
TIMBER CREEK 7950 .0 .1 0* 2.8 .7 400
YOUNTS PEAK 8350 .0 .6 0* 1.4 .9 156
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Basin wide percent of average 168* 224
SHOSHONE RIVER
BLACKWATER 9780 2.1 1.5 140* 2.2 1.2 183
EVENING STAR 9200 1.0 1.2 83* 2.1 1.2 175
KIRWIN 9550 1.5 .8 188* 2.3 .8 288
MARQUETTE 8760 .3 -M * 2.5 1.1 227
SYLVAN LAKE 8420 .4 .9 44* 2.5 1.1 227
SYLVAN ROAD 7120 .0 .1 0* 1.0 .7 143
YOUNTS PEAK 8350 .0 .6 0* 1.4 .9 156
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Basin wide percent of average 98* 200
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .9 .2 450* 1.1 .8 138
BIG GOOSE 7990 1.4 .3 467* 3.2 1.1 291
BONE SPRINGS DIV 9350 2.6 1.3 200* 3.2 1.2 267
BURGESS JUNCTION 7880 1.5 .6 250* 3.2 1.1 291
CLOUD PEAK RESERVOIR 9860 1.6 .4 400* 2.9 1.3 223
DOME LAKE 8880 2.0 .7 286* 3.4 1.2 283
GRAVE SPRINGS 8550 .8 .2 400* 1.5 1.1 136
HANSEN SAWMILL 8360 .1 .2 50* 1.4 .8 175
LITTLE GOOSE 8870 1.7 -M * 3.5 -M *
MIDDLE POWDER 7760 1.4 .6 233* 3.1 1.2 258
POWDER RIVER PASS 9480 1.5 .5 300* 2.2 .9 244
SOLDIER PARK 8720 .6 -M * 2.1 -M *
SUCKER CREEK 8880 2.4 .5 480* 3.2 1.2 267
TIE CREEK 6870 .1 .0 * 3.8 1.3 292
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Basin wide percent of average 296* 244
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* .7 1.1 64
COLE CANYON 5910 .0 .2 0* 1.2 .9 133
NORTH RAPID CREEK 6130 .0 .1 0* .4 1.2 33
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Basin wide percent of average 0* 72
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 1.5 -M * 2.5 -M *
CINNABAR PARK 9574 1.0 .3 333* 1.9 .9 211
COLUMBINE 9160 .0 .0 100* 1.2 .9 133
DIVIDE PEAK 8880 .2 .7 29* 2.0 1.2 167
ELK RIVER 8700 .0 .1 0* 1.4 .9 156
JOE WRIGHT 10120 .0 .8 0* 1.5 1.5 100
NORTH FRENCH CREEK 10130 1.4 1.4 100* 2.0 1.3 154
OLD BATTLE 10000 1.7 1.1 155* 2.4 1.4 171
SAGE CREEK BASIN 7850 .0 .3 0* 1.3 .7 186
SOUTH BRUSH CREEK 8440 .1 .2 50* 1.6 1.1 145
TOWER 10500 .8 1.0 80* 2.1 1.5 140
WEBBER SPRINGS 9250 .5 .5 100* 2.1 1.3 162
WILLOW CREEK PASS 9540 .0 .3 0* 4.9 .9 544
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Basin wide percent of average 85* 179
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .9 .9 100* 2.0 1.0 200
CASPER MTN. 7900 1.9 .6 317* 3.4 1.1 309
DEADMAN HILL 10220 .8 .9 89* 1.5 1.1 136
DEER PARK 9700 1.0 .8 125* 2.3 1.0 230
LAPRELE CREEK 8375 .1 .3 33* 1.8 .8 225
RENO HILL 8400 1.7 .7 243* 2.4 1.1 218
ROACH 9700 1.2 .3 400* 1.9 1.0 190
SAND LAKE 10050 1.9 1.3 146* 2.0 1.3 154
SOUTH PASS 9040 1.1 .4 275* 2.1 .8 263
WINDY PEAK 7900 .1 .1 100* 1.1 .8 138
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Basin wide percent of average 170* 205
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 1.0 .7 143
DIVIDE PEAK 8880 .2 .7 29* 2.0 1.2 167
OLD BATTLE 10000 1.7 1.1 155* 2.4 1.4 171
SANDSTONE RS 8150 .0 .1 0* .9 .9 100
WHISKEY PARK 8950 .0 .5 0* 1.8 1.3 138
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Basin wide percent of average 79* 147
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .9 .4 225* 1.8 .8 225
BLIND BULL SUM 8650 1.0 .4 250* 1.3 .9 144
EAST RIM DIVIDE 7930 .2 .0 * 1.4 .6 233
ELKHART PARK G.S. 9400 .9 .2 450* 2.2 .9 244
GROS VENTRE SUMMIT 8750 .1 .6 17* 1.4 .8 175
GUNSIGHT PASS 9820 .7 -M * 1.9 -M *
KENDALL R.S. 7740 .1 .0 * 1.8 .7 257
LOOMIS PARK 8240 .1 .2 50* 1.6 .8 200
NEW FORK LAKE 8340 .1 .0 * 1.8 .7 257
POCKET CREEK 9360 1.3 -M * 2.4 -M *
SNIDER BASIN 8060 .1 .1 100* 1.5 .6 250
SPRING CREEK DIVIDE 9000 1.6 .3 533* 3.0 .9 333
TRIPLE PEAK 8500 .1 .2 50* 2.2 .9 244
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Basin wide percent of average 217* 233
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 * 2.1 .6 350
HEWINTA 9519 .0 .4 0* 2.4 1.0 240
HICKERSON PARK 9145 -M .0 * -M .8 *
HOLE-IN-ROCK 9150 .5 .0 * 2.7 .8 338
INDIAN CREEK 9425 2.0 .4 500* 2.8 1.0 280
KELLEY R.S. 8180 .3 .2 150* 2.5 .8 313
STEEL CREEK PARK 10200 -M .8 * -M 1.0 *
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Basin wide percent of average 290* 298
UPPER BEAR RIVER
BUG LAKE 7950 .1 .5 20* 1.2 1.0 120
HAYDEN FORK 9212 .1 .4 25* 3.5 1.0 350
KELLEY R.S. 8180 .3 .2 150* 2.5 .8 313
LILY LAKE 9156 .0 .4 0* 2.3 1.0 230
MONTE CRISTO 8960 -M .7 * -M 1.2 *
SALT RIVER SUMMIT 7760 .1 .0 * 1.8 .8 225
TRIAL LAKE 9992 1.0 .8 125* 2.2 1.2 183
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Basin wide percent of average 70* 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.