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 FRIDAY: OCTOBER 9 , 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 .1 .0 .7 .4 175
COTTONWOOD CREEK 7670 .4 .0 1.1 .6 183
GRAND TARGHEE 9260 2.5 -M * 1.6 -M *
GRANITE CREEK 6770 .3 .0 .6 .4 150
GRASSY LAKE 7265 .7 .0 .9 .7 129
GROS VENTRE SUMMIT 8750 .9 .3 300 .9 .4 225
GUNSIGHT PASS 9820 .9 -M * 1.3 -M *
LEWIS LAKE DIVIDE 7850 -M .0 * -M .6 *
PHILLIPS BENCH 8200 .5 .0 .8 .5 160
SALT RIVER SUMMIT 7760 .2 .0 .6 .4 150
SNAKE RIVER STATION 6920 .1 .0 .7 .5 140
SPRING CREEK DIVIDE 9000 1.2 .0 1.2 .5 240
THUMB DIVIDE 7980 .6 .0 1.2 .4 300
TOGWOTEE PASS 9580 1.8 .5 360 1.4 .6 233
TWO OCEAN PLATEAU 9240 1.4 .6 233 .8 .6 133
WILLOW CREEK 8380 1.7 .1 1700 1.8 .8 225
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Basin wide percent of average 387* 187
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 1.2 .9 133 .6 .4 150
BLACK BEAR 8170 .8 .5 160 .8 .6 133
CANYON 7870 .4 .1 400 .5 .3 167
FISHER CREEK 9100 .7 .6 117 .6 .6 100
MADISON PLATEAU 7750 .7 .4 175 .8 .5 160
NORTHEAST ENTRANCE 7350 .0 .0 100 .3 .4 75
PARKER PEAK 9400 -M .9 * .6 .6 100
SYLVAN LAKE 8420 .5 .6 83 .6 .6 100
THUMB DIVIDE 7980 .6 .0 1.2 .4 300
TWO OCEAN PLATEAU 9240 1.4 .6 233 .8 .6 133
WHISKEY CREEK 6800 .4 .1 400 .6 .4 150
WHITE MILL 8700 .5 .4 125 .3 .6 50
WOLVERINE 7650 .5 .1 500 .6 .4 150
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Basin wide percent of average 165 130
WIND RIVER
BURROUGHS CREEK 8750 1.5 .2 750 1.3 .4 325
COLD SPRINGS 9630 1.4 .2 700 1.7 .4 425
DEER PARK 9700 1.5 .7 214 1.8 .5 360
HOBBS PARK 10100 2.5 .6 417 -M .4 *
LITTLE WARM 9370 1.0 .2 500 1.0 .4 250
SOUTH PASS 9040 1.5 .4 375 1.8 .4 450
ST. LAWRENCE ALT 8620 1.4 .2 700 1.9 .4 475
TOGWOTEE PASS 9580 1.8 .5 360 1.4 .6 233
TOWNSEND CREEK 8700 1.9 .2 950 2.2 .5 440
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Basin wide percent of average 453 364
BIGHORN BASIN
BALD MTN. 9380 1.8 1.1 164 1.3 .6 217
BEAR TRAP MEADOW 8200 1.2 .1 1200 1.3 .4 325
BLACKWATER 9780 1.6 1.1 145 1.2 .6 200
BONE SPRINGS DIV 9350 1.2 .9 133 1.1 .6 183
EVENING STAR 9200 1.5 .9 167 1.4 .6 233
GRAVE SPRINGS 8550 1.8 .4 450 1.9 .6 317
KIRWIN 9550 1.6 .6 267 1.1 .4 275
MARQUETTE 8760 2.6 .7 371 1.6 .5 320
MIDDLE POWDER 7760 2.7 .4 675 1.7 .6 283
OWL CREEK 8975 1.8 .4 450 1.2 .3 400
POWDER RIVER PASS 9480 1.1 .4 275 .9 .5 180
SHELL CREEK 9580 1.7 1.1 155 1.3 .5 260
SYLVAN LAKE 8420 .5 .6 83 .6 .6 100
SYLVAN ROAD 7120 .1 .0 .5 .4 125
TIMBER CREEK 7950 1.1 .2 550 1.3 .4 325
YOUNTS PEAK 8350 .8 .3 267 .7 .4 175
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Basin wide percent of average 250 239
SHOSHONE RIVER
BLACKWATER 9780 1.6 1.1 145 1.2 .6 200
EVENING STAR 9200 1.5 .9 167 1.4 .6 233
KIRWIN 9550 1.6 .6 267 1.1 .4 275
MARQUETTE 8760 2.6 .7 371 1.6 .5 320
SYLVAN LAKE 8420 .5 .6 83 .6 .6 100
SYLVAN ROAD 7120 .1 .0 .5 .4 125
YOUNTS PEAK 8350 .8 .3 267 .7 .4 175
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Basin wide percent of average 205 203
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.2 .1 1200 1.3 .4 325
BIG GOOSE 7990 1.0 .2 500 1.3 .5 260
BONE SPRINGS DIV 9350 1.2 .9 133 1.1 .6 183
BURGESS JUNCTION 7880 1.7 .5 340 1.4 .5 280
CLOUD PEAK RESERVOIR 9860 1.5 .3 500 1.5 .6 250
DOME LAKE 8880 1.3 .5 260 1.4 .6 233
GRAVE SPRINGS 8550 1.8 .4 450 1.9 .6 317
HANSEN SAWMILL 8360 1.3 .1 1300 1.3 .4 325
MIDDLE POWDER 7760 2.7 .4 675 1.7 .6 283
POWDER RIVER PASS 9480 1.1 .4 275 .9 .5 180
SUCKER CREEK 8880 1.8 .4 450 1.5 .6 250
TIE CREEK 6870 1.8 .1 1800 1.9 .6 317
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Basin wide percent of average 428 265
BELLE FOURCHE
BLIND PARK 6890 .9 .5 180 1.8 .6 300
COLE CANYON 5910 1.4 .0 2.5 .4 625
NORTH RAPID CREEK 6130 .8 .0 1.7 .6 283
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Basin wide percent of average 180* 375
UPPER N. PLATTE RIVER
COLUMBINE 9160 .1 .0 1.0 .5 200
DIVIDE PEAK 8880 .4 .4 100 1.5 .5 300
ELK RIVER 8700 .1 .0 .9 .4 225
JOE WRIGHT 10120 .5 .4 125 .9 .7 129
NORTH FRENCH CREEK 10130 1.6 .7 229 1.7 .6 283
OLD BATTLE 10000 2.0 .6 333 1.9 .6 317
SAGE CREEK BASIN 7850 .0 .0 100 1.2 .3 400
SOUTH BRUSH CREEK 8440 .0 .1 0 1.3 .5 260
TOWER 10500 2.6 .5 520 2.2 .7 314
WEBBER SPRINGS 9250 .3 .3 100 1.3 .6 217
WILLOW CREEK PASS 9540 .2 .1 200 .6 .4 150
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Basin wide percent of average 245 250
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .8 .5 160 1.1 .5 220
CASPER MTN. 7900 .4 .3 133 1.1 .5 220
DEADMAN HILL 10220 .0 .5 0 .8 .5 160
DEER PARK 9700 1.5 .7 214 1.8 .5 360
LAPRELE CREEK 8375 .2 .1 200 .6 .4 150
RENO HILL 8400 .6 .4 150 .6 .5 120
ROACH 9700 .5 .1 500 1.1 .5 220
SAND LAKE 10050 1.6 .8 200 1.5 .6 250
SOUTH PASS 9040 1.5 .4 375 1.8 .4 450
WINDY PEAK 7900 .2 .0 .6 .4 150
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Basin wide percent of average 187 229
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 .0 1.0 .3 333
DIVIDE PEAK 8880 .4 .4 100 1.5 .5 300
OLD BATTLE 10000 2.0 .6 333 1.9 .6 317
SANDSTONE RS 8150 -M .0 * .7 .4 175
WHISKEY PARK 8950 .8 .2 400 1.4 .6 233
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Basin wide percent of average 267 271
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .9 .2 450 .8 .4 200
BLIND BULL SUM 8650 .9 .1 900 .9 .4 225
EAST RIM DIVIDE 7930 .7 .0 1.1 .3 367
ELKHART PARK G.S. 9400 1.3 .0 1.1 .5 220
GROS VENTRE SUMMIT 8750 .9 .3 300 .9 .4 225
GUNSIGHT PASS 9820 .9 -M * 1.3 -M *
KENDALL R.S. 7740 .7 .0 1.0 .3 333
LOOMIS PARK 8240 .9 .1 900 1.1 .4 275
NEW FORK LAKE 8340 .6 .0 .9 .4 225
SNIDER BASIN 8060 .8 .0 .9 .3 300
SPRING CREEK DIVIDE 9000 1.2 .0 1.2 .5 240
TRIPLE PEAK 8500 1.3 .0 1.5 .5 300
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Basin wide percent of average 514* 259
LOWER GREEN RIVER
HAMS FORK 7840 .2 .0 .6 .3 200
HEWINTA 9519 -M .2 * .7 .5 140
HICKERSON PARK 9145 .0 .0 100 .6 .4 150
HOLE-IN-ROCK 9150 .0 .0 100 .7 .4 175
INDIAN CREEK 9425 1.0 .2 500 1.2 .5 240
KELLEY R.S. 8180 .6 .0 .6 .4 150
STEEL CREEK PARK 10200 .1 .5 20 .8 .5 160
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Basin wide percent of average 157 173
UPPER BEAR RIVER
BUG LAKE 7950 .5 .3 167 .6 .5 120
HAYDEN FORK 9212 .0 .2 0 1.0 .5 200
KELLEY R.S. 8180 .6 .0 .6 .4 150
LILY LAKE 9156 .0 .3 0 .7 .5 140
MONTE CRISTO 8960 .9 .4 225 .9 .6 150
SALT RIVER SUMMIT 7760 .2 .0 .6 .4 150
TRIAL LAKE 9992 1.0 .5 200 1.0 .6 167
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Basin wide percent of average 141 154
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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.