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 WEDNESDAY: OCTOBER 14 , 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 .4 .1 400 1.1 .7 157
COTTONWOOD CREEK 7670 1.2 .0 2.1 1.0 210
GRAND TARGHEE 9260 3.4 -M * 2.7 -M *
GRANITE CREEK 6770 .8 .0 1.4 .6 233
GRASSY LAKE 7265 .9 .2 450 1.3 1.2 108
GROS VENTRE SUMMIT 8750 1.9 .5 380 1.7 .7 243
GUNSIGHT PASS 9820 1.7 -M * 2.3 -M *
LEWIS LAKE DIVIDE 7850 1.0 .0 1.5 1.0 150
PHILLIPS BENCH 8200 1.0 .1 1000 1.5 .8 188
SALT RIVER SUMMIT 7760 .4 .0 1.5 .7 214
SNAKE RIVER STATION 6920 .1 .0 1.1 .8 138
SPRING CREEK DIVIDE 9000 2.2 .2 1100 2.4 .8 300
THUMB DIVIDE 7980 1.3 .1 1300 2.1 .8 262
TOGWOTEE PASS 9580 2.8 .8 350 2.3 1.0 230
TWO OCEAN PLATEAU 9240 2.1 1.0 210 1.5 1.1 136
WILLOW CREEK 8380 2.3 .3 767 2.9 1.4 207
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Basin wide percent of average 452 194
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 1.9 1.1 173 1.2 .8 150
BLACK BEAR 8170 1.6 .7 229 1.4 1.1 127
CANYON 7870 .8 .2 400 1.1 .6 183
FISHER CREEK 9100 1.4 .8 175 1.4 1.1 127
MADISON PLATEAU 7750 1.6 .4 400 1.8 1.0 180
NORTHEAST ENTRANCE 7350 .3 .0 .6 .6 100
PARKER PEAK 9400 -M 1.0 * 1.3 1.0 130
SYLVAN LAKE 8420 1.1 .6 183 1.2 1.0 120
THUMB DIVIDE 7980 1.3 .1 1300 2.1 .8 262
TWO OCEAN PLATEAU 9240 2.1 1.0 210 1.5 1.1 136
WHISKEY CREEK 6800 1.1 .1 1100 1.0 .7 143
WHITE MILL 8700 1.1 .6 183 1.0 1.0 100
WOLVERINE 7650 .6 .1 600 1.1 .8 138
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Basin wide percent of average 256 144
WIND RIVER
BURROUGHS CREEK 8750 2.3 .2 1150 2.0 .6 333
COLD SPRINGS 9630 2.0 .2 1000 2.3 .7 329
DEER PARK 9700 -M .8 * 2.9 .8 362
HOBBS PARK 10100 3.0 .7 429 -M .8 *
LITTLE WARM 9370 1.7 .3 567 1.8 .6 300
SOUTH PASS 9040 2.2 .4 550 2.7 .7 386
ST. LAWRENCE ALT 8620 1.9 .1 1900 2.4 .7 343
TOGWOTEE PASS 9580 2.8 .8 350 2.3 1.0 230
TOWNSEND CREEK 8700 2.5 .2 1250 2.7 .8 338
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Basin wide percent of average 634 324
BIGHORN BASIN
BALD MTN. 9380 2.3 1.4 164 2.0 1.0 200
BEAR TRAP MEADOW 8200 1.4 .1 1400 1.7 .7 243
BLACKWATER 9780 2.7 1.3 208 2.0 1.0 200
BONE SPRINGS DIV 9350 1.6 1.1 145 1.8 1.0 180
EVENING STAR 9200 2.3 1.0 230 2.5 1.0 250
GRAVE SPRINGS 8550 2.1 .3 700 2.2 .9 244
KIRWIN 9550 2.2 .8 275 1.7 .7 243
MARQUETTE 8760 3.1 .8 388 2.4 .9 267
MIDDLE POWDER 7760 2.9 .5 580 2.5 1.0 250
OWL CREEK 8975 2.4 .4 600 1.7 .5 340
POWDER RIVER PASS 9480 1.5 .4 375 1.7 .8 212
SHELL CREEK 9580 2.3 1.5 153 1.9 .8 237
SYLVAN LAKE 8420 1.1 .6 183 1.2 1.0 120
SYLVAN ROAD 7120 .5 .0 .9 .6 150
TIMBER CREEK 7950 1.6 .1 1600 1.9 .6 317
YOUNTS PEAK 8350 1.4 .5 280 1.2 .7 171
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Basin wide percent of average 286 222
SHOSHONE RIVER
BLACKWATER 9780 2.7 1.3 208 2.0 1.0 200
EVENING STAR 9200 2.3 1.0 230 2.5 1.0 250
KIRWIN 9550 2.2 .8 275 1.7 .7 243
MARQUETTE 8760 3.1 .8 388 2.4 .9 267
SYLVAN LAKE 8420 1.1 .6 183 1.2 1.0 120
SYLVAN ROAD 7120 .5 .0 .9 .6 150
YOUNTS PEAK 8350 1.4 .5 280 1.2 .7 171
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Basin wide percent of average 256 202
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.4 .1 1400 1.7 .7 243
BIG GOOSE 7990 1.4 .3 467 1.9 .9 211
BONE SPRINGS DIV 9350 1.6 1.1 145 1.8 1.0 180
BURGESS JUNCTION 7880 1.9 .6 317 2.1 .9 233
CLOUD PEAK RESERVOIR 9860 1.8 .4 450 2.5 1.1 227
DOME LAKE 8880 1.7 .7 243 2.2 1.0 220
GRAVE SPRINGS 8550 2.1 .3 700 2.2 .9 244
HANSEN SAWMILL 8360 1.5 .2 750 1.7 .7 243
MIDDLE POWDER 7760 2.9 .5 580 2.5 1.0 250
POWDER RIVER PASS 9480 1.5 .4 375 1.7 .8 212
SUCKER CREEK 8880 2.1 .5 420 2.2 1.0 220
TIE CREEK 6870 2.0 .0 2.3 1.1 209
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Basin wide percent of average 390 223
BELLE FOURCHE
BLIND PARK 6890 1.0 .0 2.0 1.0 200
COLE CANYON 5910 1.5 .2 750 2.9 .7 414
NORTH RAPID CREEK 6130 .6 .1 600 2.0 1.0 200
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Basin wide percent of average 700 256
UPPER N. PLATTE RIVER
COLUMBINE 9160 .2 .0 1.6 .8 200
DIVIDE PEAK 8880 1.1 .6 183 2.4 1.0 240
ELK RIVER 8700 .1 .1 100 1.8 .8 225
JOE WRIGHT 10120 .8 .7 114 1.7 1.3 131
NORTH FRENCH CREEK 10130 4.5 1.2 375 -M 1.1 *
OLD BATTLE 10000 4.0 1.0 400 4.2 1.2 350
SAGE CREEK BASIN 7850 .2 .2 100 1.7 .6 283
SOUTH BRUSH CREEK 8440 1.0 .1 1000 2.8 .9 311
TOWER 10500 3.6 .8 450 3.5 1.2 292
WEBBER SPRINGS 9250 1.9 .4 475 3.0 1.1 273
WILLOW CREEK PASS 9540 .4 .3 133 .8 .7 114
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Basin wide percent of average 326 245
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 3.2 .8 400 -M .9 *
CASPER MTN. 7900 1.2 .5 240 2.1 .9 233
DEADMAN HILL 10220 .3 .8 37 2.2 .9 244
DEER PARK 9700 -M .8 * 2.9 .8 362
LAPRELE CREEK 8375 1.2 .2 600 1.7 .7 243
RENO HILL 8400 1.4 .6 233 1.8 .9 200
ROACH 9700 1.8 .2 900 2.5 .9 278
SAND LAKE 10050 4.3 1.1 391 4.2 1.1 382
SOUTH PASS 9040 2.2 .4 550 2.7 .7 386
WINDY PEAK 7900 1.2 .1 1200 1.6 .6 267
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Basin wide percent of average 357 289
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .2 .0 1.1 .6 183
DIVIDE PEAK 8880 1.1 .6 183 2.4 1.0 240
OLD BATTLE 10000 4.0 1.0 400 4.2 1.2 350
SANDSTONE RS 8150 -M .0 * 1.2 .8 150
WHISKEY PARK 8950 2.0 .4 500 3.2 1.1 291
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Basin wide percent of average 355 257
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.9 .3 633 1.8 .7 257
BLIND BULL SUM 8650 1.9 .3 633 1.5 .7 214
EAST RIM DIVIDE 7930 1.0 .0 1.7 .5 340
ELKHART PARK G.S. 9400 2.0 .2 1000 1.7 .8 212
GROS VENTRE SUMMIT 8750 1.9 .5 380 1.7 .7 243
GUNSIGHT PASS 9820 1.7 -M * 2.3 -M *
KENDALL R.S. 7740 1.1 .0 1.6 .6 267
LOOMIS PARK 8240 1.4 .2 700 1.7 .7 243
NEW FORK LAKE 8340 .9 .0 1.5 .6 250
SNIDER BASIN 8060 1.5 .1 1500 1.7 .5 340
SPRING CREEK DIVIDE 9000 2.2 .2 1100 2.4 .8 300
TRIPLE PEAK 8500 2.1 .2 1050 2.6 .8 325
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Basin wide percent of average 745 269
LOWER GREEN RIVER
HAMS FORK 7840 .6 .0 1.5 .5 300
HEWINTA 9519 .1 .3 33 .5 .9 56
HICKERSON PARK 9145 .1 .0 .9 .6 150
HOLE-IN-ROCK 9150 .0 .0 100 1.0 .7 143
INDIAN CREEK 9425 2.7 .3 900 2.7 .8 338
KELLEY R.S. 8180 1.6 .1 1600 2.0 .7 286
STEEL CREEK PARK 10200 .7 .7 100 1.0 .8 125
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Basin wide percent of average 364 192
UPPER BEAR RIVER
BUG LAKE 7950 .6 .4 150 1.2 .9 133
HAYDEN FORK 9212 .2 .3 67 1.6 .9 178
KELLEY R.S. 8180 1.6 .1 1600 2.0 .7 286
LILY LAKE 9156 .3 .4 75 1.1 .9 122
MONTE CRISTO 8960 1.6 .6 267 1.5 1.0 150
SALT RIVER SUMMIT 7760 .4 .0 1.5 .7 214
TRIAL LAKE 9992 1.7 .7 243 1.5 1.0 150
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Basin wide percent of average 240 170
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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.