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 TUESDAY: OCTOBER 13 , 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 .5 .0 1.1 .7 157
COTTONWOOD CREEK 7670 1.0 .0 1.9 .9 211
GRAND TARGHEE 9260 3.1 -M * 2.5 -M *
GRANITE CREEK 6770 .7 .0 1.2 .6 200
GRASSY LAKE 7265 .9 .1 900 1.1 1.1 100
GROS VENTRE SUMMIT 8750 1.5 .4 375 1.6 .7 229
GUNSIGHT PASS 9820 1.5 -M * 2.1 -M *
LEWIS LAKE DIVIDE 7850 .8 .0 1.1 .9 122
PHILLIPS BENCH 8200 .8 .1 800 1.2 .7 171
SALT RIVER SUMMIT 7760 .8 .0 1.3 .6 217
SNAKE RIVER STATION 6920 .2 .0 1.0 .8 125
SPRING CREEK DIVIDE 9000 2.0 .2 1000 2.2 .7 314
THUMB DIVIDE 7980 1.0 .1 1000 1.7 .7 243
TOGWOTEE PASS 9580 2.6 .8 325 2.2 .9 244
TWO OCEAN PLATEAU 9240 1.8 .9 200 1.1 1.0 110
WILLOW CREEK 8380 2.3 .3 767 2.7 1.3 208
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Basin wide percent of average 445 184
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 1.8 1.1 164 .9 .7 129
BLACK BEAR 8170 1.2 .6 200 1.1 1.0 110
CANYON 7870 .7 .2 350 1.0 .6 167
FISHER CREEK 9100 1.1 .8 138 1.1 1.0 110
MADISON PLATEAU 7750 1.2 .4 300 1.4 .9 156
NORTHEAST ENTRANCE 7350 .2 .0 .4 .6 67
PARKER PEAK 9400 -M 1.0 * 1.1 .9 122
SYLVAN LAKE 8420 .9 .6 150 .9 .9 100
THUMB DIVIDE 7980 1.0 .1 1000 1.7 .7 243
TWO OCEAN PLATEAU 9240 1.8 .9 200 1.1 1.0 110
WHISKEY CREEK 6800 .8 .1 800 .8 .7 114
WHITE MILL 8700 .9 .6 150 .7 .9 78
WOLVERINE 7650 .8 .1 800 .8 .7 114
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Basin wide percent of average 222 123
WIND RIVER
BURROUGHS CREEK 8750 2.1 .2 1050 1.9 .6 317
COLD SPRINGS 9630 1.9 .2 950 2.3 .6 383
DEER PARK 9700 -M .8 * 2.8 .7 400
HOBBS PARK 10100 2.9 .7 414 -M .7 *
LITTLE WARM 9370 1.6 .3 533 1.7 .6 283
SOUTH PASS 9040 2.2 .4 550 2.7 .6 450
ST. LAWRENCE ALT 8620 1.8 .1 1800 2.4 .6 400
TOGWOTEE PASS 9580 2.6 .8 325 2.2 .9 244
TOWNSEND CREEK 8700 2.4 .3 800 2.7 .8 338
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Basin wide percent of average 583 346
BIGHORN BASIN
BALD MTN. 9380 2.3 1.4 164 1.9 .9 211
BEAR TRAP MEADOW 8200 1.4 .2 700 1.6 .6 267
BLACKWATER 9780 2.5 1.3 192 1.9 .9 211
BONE SPRINGS DIV 9350 1.6 1.1 145 1.7 1.0 170
EVENING STAR 9200 2.1 1.0 210 2.3 .9 256
GRAVE SPRINGS 8550 2.0 .4 500 2.2 .9 244
KIRWIN 9550 2.1 .8 262 1.6 .6 267
MARQUETTE 8760 3.0 .8 375 2.3 .8 287
MIDDLE POWDER 7760 3.0 .5 600 2.4 .9 267
OWL CREEK 8975 2.2 .4 550 1.6 .4 400
POWDER RIVER PASS 9480 1.5 .4 375 1.6 .7 229
SHELL CREEK 9580 2.3 1.5 153 1.9 .8 237
SYLVAN LAKE 8420 .9 .6 150 .9 .9 100
SYLVAN ROAD 7120 .5 .0 .9 .6 150
TIMBER CREEK 7950 1.5 .1 1500 1.8 .6 300
YOUNTS PEAK 8350 1.1 .5 220 1.0 .7 143
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Basin wide percent of average 268 226
SHOSHONE RIVER
BLACKWATER 9780 2.5 1.3 192 1.9 .9 211
EVENING STAR 9200 2.1 1.0 210 2.3 .9 256
KIRWIN 9550 2.1 .8 262 1.6 .6 267
MARQUETTE 8760 3.0 .8 375 2.3 .8 287
SYLVAN LAKE 8420 .9 .6 150 .9 .9 100
SYLVAN ROAD 7120 .5 .0 .9 .6 150
YOUNTS PEAK 8350 1.1 .5 220 1.0 .7 143
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Basin wide percent of average 234 202
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.4 .2 700 1.6 .6 267
BIG GOOSE 7990 1.3 .3 433 1.8 .8 225
BONE SPRINGS DIV 9350 1.6 1.1 145 1.7 1.0 170
BURGESS JUNCTION 7880 1.8 .6 300 2.0 .8 250
CLOUD PEAK RESERVOIR 9860 1.8 .3 600 2.3 1.0 230
DOME LAKE 8880 1.7 .7 243 2.1 .9 233
GRAVE SPRINGS 8550 2.0 .4 500 2.2 .9 244
HANSEN SAWMILL 8360 1.6 .2 800 1.6 .7 229
MIDDLE POWDER 7760 3.0 .5 600 2.4 .9 267
POWDER RIVER PASS 9480 1.5 .4 375 1.6 .7 229
SUCKER CREEK 8880 2.1 .5 420 2.2 .9 244
TIE CREEK 6870 2.0 .0 2.2 1.0 220
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Basin wide percent of average 381 232
BELLE FOURCHE
BLIND PARK 6890 .8 .0 2.0 .9 222
COLE CANYON 5910 1.4 .2 700 2.8 .7 400
NORTH RAPID CREEK 6130 .6 .1 600 1.9 .9 211
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Basin wide percent of average 667 268
UPPER N. PLATTE RIVER
COLUMBINE 9160 .1 .0 1.3 .7 186
DIVIDE PEAK 8880 1.2 .6 200 2.4 .9 267
ELK RIVER 8700 .4 .1 400 1.7 .7 243
JOE WRIGHT 10120 .8 .6 133 1.5 1.2 125
NORTH FRENCH CREEK 10130 4.5 1.1 409 -M 1.0 *
OLD BATTLE 10000 3.8 .9 422 4.0 1.1 364
SAGE CREEK BASIN 7850 .1 .2 50 1.6 .5 320
SOUTH BRUSH CREEK 8440 1.2 .1 1200 2.7 .9 300
TOWER 10500 3.7 .7 529 3.4 1.1 309
WEBBER SPRINGS 9250 1.9 .4 475 2.9 1.0 290
WILLOW CREEK PASS 9540 .3 .2 150 .7 .7 100
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Basin wide percent of average 365 252
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 3.2 .7 457 -M .8 *
CASPER MTN. 7900 1.2 .5 240 2.0 .8 250
DEADMAN HILL 10220 .3 .7 43 2.2 .9 244
DEER PARK 9700 -M .8 * 2.8 .7 400
LAPRELE CREEK 8375 1.1 .2 550 1.7 .6 283
RENO HILL 8400 1.4 .6 233 1.8 .8 225
ROACH 9700 1.8 .2 900 2.5 .8 312
SAND LAKE 10050 4.2 1.1 382 4.1 1.0 410
SOUTH PASS 9040 2.2 .4 550 2.7 .6 450
WINDY PEAK 7900 1.3 .1 1300 1.6 .6 267
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Basin wide percent of average 371 315
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 .0 1.1 .6 183
DIVIDE PEAK 8880 1.2 .6 200 2.4 .9 267
OLD BATTLE 10000 3.8 .9 422 4.0 1.1 364
SANDSTONE RS 8150 -M .0 * 1.1 .7 157
WHISKEY PARK 8950 2.1 .4 525 3.2 1.0 320
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Basin wide percent of average 374 274
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.7 .3 567 1.5 .6 250
BLIND BULL SUM 8650 1.8 .3 600 1.4 .7 200
EAST RIM DIVIDE 7930 1.1 .0 1.6 .5 320
ELKHART PARK G.S. 9400 1.8 .1 1800 1.5 .7 214
GROS VENTRE SUMMIT 8750 1.5 .4 375 1.6 .7 229
GUNSIGHT PASS 9820 1.5 -M * 2.1 -M *
KENDALL R.S. 7740 1.1 .0 1.5 .5 300
LOOMIS PARK 8240 1.4 .2 700 1.7 .6 283
NEW FORK LAKE 8340 .9 .0 1.4 .5 280
SNIDER BASIN 8060 1.4 .1 1400 1.6 .5 320
SPRING CREEK DIVIDE 9000 2.0 .2 1000 2.2 .7 314
TRIPLE PEAK 8500 2.0 .1 2000 2.5 .7 357
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Basin wide percent of average 800 276
LOWER GREEN RIVER
HAMS FORK 7840 .9 .0 1.3 .5 260
HEWINTA 9519 .1 .3 33 .9 .8 112
HICKERSON PARK 9145 .1 .0 .8 .6 133
HOLE-IN-ROCK 9150 .1 .0 1.0 .6 167
INDIAN CREEK 9425 2.4 .3 800 2.5 .8 312
KELLEY R.S. 8180 1.3 .1 1300 1.7 .7 243
STEEL CREEK PARK 10200 .6 .6 100 .9 .8 112
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Basin wide percent of average 338 190
UPPER BEAR RIVER
BUG LAKE 7950 .8 .4 200 1.0 .8 125
HAYDEN FORK 9212 .1 .3 33 1.3 .8 162
KELLEY R.S. 8180 1.3 .1 1300 1.7 .7 243
LILY LAKE 9156 .3 .4 75 .9 .8 112
MONTE CRISTO 8960 1.2 .6 200 1.4 1.0 140
SALT RIVER SUMMIT 7760 .8 .0 1.3 .6 217
TRIAL LAKE 9992 1.3 .7 186 1.2 .9 133
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Basin wide percent of average 200 157
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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.