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 THURSDAY: OCTOBER 15 , 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 .0 .1 0 1.5 .8 188
COTTONWOOD CREEK 7670 1.1 .0 3.0 1.1 273
GRAND TARGHEE 9260 3.8 -M * 3.0 -M *
GRANITE CREEK 6770 .5 .1 500 1.5 .7 214
GRASSY LAKE 7265 .6 .2 300 1.7 1.3 131
GROS VENTRE SUMMIT 8750 1.9 .5 380 1.8 .8 225
GUNSIGHT PASS 9820 1.8 -M * 2.5 -M *
LEWIS LAKE DIVIDE 7850 .9 .0 1.9 1.1 173
PHILLIPS BENCH 8200 1.0 .2 500 1.8 .9 200
SALT RIVER SUMMIT 7760 .3 .0 2.2 .7 314
SNAKE RIVER STATION 6920 .2 .0 1.3 .9 144
SPRING CREEK DIVIDE 9000 3.1 .3 1033 3.3 .9 367
THUMB DIVIDE 7980 1.3 .1 1300 2.5 .8 312
TOGWOTEE PASS 9580 3.1 .9 344 2.7 1.1 245
TWO OCEAN PLATEAU 9240 2.4 1.1 218 1.8 1.2 150
WILLOW CREEK 8380 2.7 .4 675 3.9 1.5 260
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Basin wide percent of average 426 224
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 2.3 1.2 192 1.8 .8 225
BLACK BEAR 8170 2.4 .7 343 2.5 1.2 208
CANYON 7870 .8 .2 400 1.1 .7 157
FISHER CREEK 9100 2.5 .9 278 2.4 1.2 200
MADISON PLATEAU 7750 1.5 .4 375 2.4 1.0 240
NORTHEAST ENTRANCE 7350 .1 .0 1.2 .6 200
PARKER PEAK 9400 -M 1.1 * 1.5 1.0 150
SYLVAN LAKE 8420 1.3 .7 186 1.5 1.0 150
THUMB DIVIDE 7980 1.3 .1 1300 2.5 .8 312
TWO OCEAN PLATEAU 9240 2.4 1.1 218 1.8 1.2 150
WHISKEY CREEK 6800 .7 .1 700 1.5 .8 188
WHITE MILL 8700 2.0 .7 286 1.8 1.1 164
WOLVERINE 7650 .3 .1 300 1.2 .8 150
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Basin wide percent of average 282 190
WIND RIVER
BURROUGHS CREEK 8750 2.4 .3 800 2.1 .7 300
COLD SPRINGS 9630 2.0 .2 1000 2.3 .7 329
DEER PARK 9700 3.1 .8 388 3.6 .9 400
HOBBS PARK 10100 3.1 .7 443 -M .9 *
LITTLE WARM 9370 1.6 .3 533 1.9 .7 271
SOUTH PASS 9040 2.7 .4 675 3.1 .8 388
ST. LAWRENCE ALT 8620 1.8 .1 1800 2.5 .7 357
TOGWOTEE PASS 9580 3.1 .9 344 2.7 1.1 245
TOWNSEND CREEK 8700 2.5 .3 833 2.8 .9 311
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Basin wide percent of average 558 323
BIGHORN BASIN
BALD MTN. 9380 2.4 1.5 160 2.1 1.1 191
BEAR TRAP MEADOW 8200 1.3 .2 650 1.7 .8 212
BLACKWATER 9780 2.9 1.4 207 2.3 1.1 209
BONE SPRINGS DIV 9350 1.6 1.2 133 1.8 1.1 164
EVENING STAR 9200 3.0 1.1 273 3.2 1.1 291
GRAVE SPRINGS 8550 2.0 .2 1000 2.2 1.0 220
KIRWIN 9550 2.2 .8 275 1.7 .7 243
MARQUETTE 8760 2.9 .8 362 2.3 1.0 230
MIDDLE POWDER 7760 2.9 .5 580 2.5 1.1 227
OWL CREEK 8975 2.3 .3 767 1.7 .5 340
POWDER RIVER PASS 9480 1.5 .5 300 1.6 .9 178
SHELL CREEK 9580 2.4 1.5 160 1.8 .9 200
SYLVAN LAKE 8420 1.3 .7 186 1.5 1.0 150
SYLVAN ROAD 7120 .2 .0 1.2 .7 171
TIMBER CREEK 7950 1.6 .1 1600 1.9 .7 271
YOUNTS PEAK 8350 1.4 .5 280 1.4 .8 175
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Basin wide percent of average 281 213
SHOSHONE RIVER
BLACKWATER 9780 2.9 1.4 207 2.3 1.1 209
EVENING STAR 9200 3.0 1.1 273 3.2 1.1 291
KIRWIN 9550 2.2 .8 275 1.7 .7 243
MARQUETTE 8760 2.9 .8 362 2.3 1.0 230
SYLVAN LAKE 8420 1.3 .7 186 1.5 1.0 150
SYLVAN ROAD 7120 .2 .0 1.2 .7 171
YOUNTS PEAK 8350 1.4 .5 280 1.4 .8 175
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Basin wide percent of average 258 212
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.3 .2 650 1.7 .8 212
BIG GOOSE 7990 1.3 .3 433 1.9 1.0 190
BONE SPRINGS DIV 9350 1.6 1.2 133 1.8 1.1 164
BURGESS JUNCTION 7880 1.9 .6 317 2.1 1.0 210
CLOUD PEAK RESERVOIR 9860 1.8 .4 450 2.5 1.2 208
DOME LAKE 8880 1.7 .7 243 2.2 1.1 200
GRAVE SPRINGS 8550 2.0 .2 1000 2.2 1.0 220
HANSEN SAWMILL 8360 1.4 .1 1400 1.7 .8 212
MIDDLE POWDER 7760 2.9 .5 580 2.5 1.1 227
POWDER RIVER PASS 9480 1.5 .5 300 1.6 .9 178
SUCKER CREEK 8880 2.1 .5 420 2.1 1.1 191
TIE CREEK 6870 1.8 .0 2.4 1.2 200
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Basin wide percent of average 375 201
BELLE FOURCHE
BLIND PARK 6890 .5 .0 2.1 1.0 210
COLE CANYON 5910 1.1 .2 550 2.8 .8 350
NORTH RAPID CREEK 6130 .3 .1 300 2.1 1.1 191
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Basin wide percent of average 467 241
UPPER N. PLATTE RIVER
COLUMBINE 9160 .3 .0 2.4 .8 300
DIVIDE PEAK 8880 .8 .7 114 2.8 1.1 255
ELK RIVER 8700 .1 .1 100 2.1 .9 233
JOE WRIGHT 10120 1.3 .7 186 2.2 1.4 157
NORTH FRENCH CREEK 10130 5.0 1.3 385 -M 1.2 *
OLD BATTLE 10000 5.1 1.0 510 5.2 1.3 400
SAGE CREEK BASIN 7850 .1 .3 33 2.1 .6 350
SOUTH BRUSH CREEK 8440 .9 .2 450 3.0 1.0 300
TOWER 10500 5.3 .9 589 5.0 1.3 385
WEBBER SPRINGS 9250 2.2 .5 440 3.9 1.2 325
WILLOW CREEK PASS 9540 .3 .3 100 1.0 .8 125
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Basin wide percent of average 352 286
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 3.5 .8 438 -M .9 *
CASPER MTN. 7900 .9 .6 150 2.1 1.0 210
DEADMAN HILL 10220 .6 .9 67 2.6 1.0 260
DEER PARK 9700 3.1 .8 388 3.6 .9 400
LAPRELE CREEK 8375 .8 .2 400 1.8 .7 257
RENO HILL 8400 1.3 .7 186 1.8 1.0 180
ROACH 9700 1.9 .3 633 2.7 .9 300
SAND LAKE 10050 4.9 1.2 408 4.8 1.2 400
SOUTH PASS 9040 2.7 .4 675 3.1 .8 388
WINDY PEAK 7900 1.1 .1 1100 1.7 .7 243
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Basin wide percent of average 347 295
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 .0 1.2 .7 171
DIVIDE PEAK 8880 .8 .7 114 2.8 1.1 255
OLD BATTLE 10000 5.1 1.0 510 5.2 1.3 400
SANDSTONE RS 8150 -M .0 * 1.4 .9 156
WHISKEY PARK 8950 2.1 .5 420 4.0 1.2 333
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Basin wide percent of average 364 281
UPPER GREEN RIVER
BIG SANDY OPENING 9080 2.9 .4 725 2.8 .7 400
BLIND BULL SUM 8650 2.3 .4 575 1.8 .8 225
EAST RIM DIVIDE 7930 .7 .0 1.7 .6 283
ELKHART PARK G.S. 9400 2.3 .2 1150 2.2 .8 275
GROS VENTRE SUMMIT 8750 1.9 .5 380 1.8 .8 225
GUNSIGHT PASS 9820 1.8 -M * 2.5 -M *
KENDALL R.S. 7740 .8 .0 1.8 .6 300
LOOMIS PARK 8240 1.3 .2 650 1.9 .7 271
NEW FORK LAKE 8340 .6 .0 1.5 .6 250
SNIDER BASIN 8060 1.5 .1 1500 2.3 .6 383
SPRING CREEK DIVIDE 9000 3.1 .3 1033 3.3 .9 367
TRIPLE PEAK 8500 2.4 .2 1200 3.2 .9 356
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Basin wide percent of average 770 304
LOWER GREEN RIVER
HAMS FORK 7840 .4 .0 2.1 .6 350
HEWINTA 9519 .1 .4 25 1.0 1.0 100
HICKERSON PARK 9145 .1 .0 .8 .7 114
HOLE-IN-ROCK 9150 .0 .0 100 1.0 .7 143
INDIAN CREEK 9425 4.3 .4 1075 3.9 .9 433
KELLEY R.S. 8180 2.1 .2 1050 3.0 .8 375
STEEL CREEK PARK 10200 .8 .7 114 1.0 .9 111
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Basin wide percent of average 429 229
UPPER BEAR RIVER
BUG LAKE 7950 .2 .5 40 2.0 .9 222
HAYDEN FORK 9212 -M .3 * -M 1.0 *
KELLEY R.S. 8180 2.1 .2 1050 3.0 .8 375
LILY LAKE 9156 .2 .4 50 1.1 .9 122
MONTE CRISTO 8960 1.8 .6 300 2.0 1.1 182
SALT RIVER SUMMIT 7760 .3 .0 2.2 .7 314
TRIAL LAKE 9992 2.3 .8 287 2.3 1.1 209
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Basin wide percent of average 264 229
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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.