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 SUNDAY: OCTOBER 9 , 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 .3 .0 * 1.7 .5 340
COTTONWOOD CREEK 7670 .8 .0 * 2.3 .7 329
GRAND TARGHEE 9260 1.6 -M * 2.2 -M *
GRANITE CREEK 6770 .1 .0 * 1.0 .4 250
GRASSY LAKE 7265 1.0 .0 * 2.3 .8 288
GROS VENTRE SUMMIT 8750 .2 .3 67* 1.2 .5 240
GUNSIGHT PASS 9820 .6 -M * 1.2 -M *
LEWIS LAKE DIVIDE 7850 .3 .0 * 1.3 .6 217
PHILLIPS BENCH 8200 .0 .0 100* .8 .5 160
SALT RIVER SUMMIT 7760 .7 .0 * 1.4 .5 280
SNAKE RIVER STATION 6920 .1 .0 * 1.5 .5 300
SPRING CREEK DIVIDE 9000 1.1 .0 * 2.0 .5 400
THUMB DIVIDE 7980 .0 .0 100* .8 .5 160
TOGWOTEE PASS 9580 .8 .5 160* 1.6 .7 229
TWO OCEAN PLATEAU 9240 1.6 .7 229* 1.7 .7 243
WILLOW CREEK 8380 1.2 .1 1200* 2.5 .9 278
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Basin wide percent of average 513* 266
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .5 .9 56* .8 .5 160
BLACK BEAR 8170 1.3 .5 260* 2.6 .7 371
CANYON 7870 .0 .1 0* .6 .4 150
FISHER CREEK 9100 .5 .6 83* 1.2 .7 171
MADISON PLATEAU 7750 .4 .4 100* 2.3 .6 383
NORTHEAST ENTRANCE 7350 .1 .1 100* .5 .4 125
PARKER PEAK 9400 .5 .9 56* .8 .6 133
SYLVAN LAKE 8420 .6 .6 100* 1.6 .7 229
THUMB DIVIDE 7980 .0 .0 100* .8 .5 160
TWO OCEAN PLATEAU 9240 1.6 .7 229* 1.7 .7 243
WHISKEY CREEK 6800 .0 .1 0* 1.8 .5 360
WHITE MILL 8700 .5 .4 125* .9 .7 129
WOLVERINE 7650 .0 .1 0* .3 .5 60
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Basin wide percent of average 111* 212
WIND RIVER
BURROUGHS CREEK 8750 .2 .2 100* .8 .4 200
CASTLE CREEK 8400 .1 -M * .8 -M *
COLD SPRINGS 9630 .7 .2 350* 1.1 .5 220
DEER PARK 9700 -M .7 * -M .5 *
HOBBS PARK 10100 2.1 .6 350* 2.0 .5 400
LITTLE WARM 9370 .3 .2 150* .8 .4 200
SOUTH PASS 9040 1.4 .4 350* 1.9 .5 380
ST. LAWRENCE ALT 8620 .4 .2 200* .9 .4 225
TOGWOTEE PASS 9580 .8 .5 160* 1.6 .7 229
TOWNSEND CREEK 8700 1.3 .3 433* 2.0 .5 400
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Basin wide percent of average 277* 285
BIGHORN BASIN
BALD MTN. 9380 2.3 1.2 192* 2.3 .7 329
BEAR TRAP MEADOW 8200 -M .2 * .9 .5 180
BLACKWATER 9780 .7 1.1 64* .8 .7 114
BONE SPRINGS DIV 9350 2.7 .9 300* 2.7 .7 386
EVENING STAR 9200 .3 .9 33* .9 .7 129
GRAVE SPRINGS 8550 1.0 .5 200* 1.4 .6 233
KIRWIN 9550 1.4 .7 200* 1.9 .4 475
MARQUETTE 8760 .5 -M * 1.9 .6 317
MIDDLE POWDER 7760 2.0 .5 400* 3.0 .7 429
OWL CREEK 8975 1.3 .4 325* 1.2 .3 400
POWDER RIVER PASS 9480 1.6 .4 400* 2.0 .6 333
SHELL CREEK 9580 2.9 1.3 223* 2.6 .6 433
SYLVAN LAKE 8420 .6 .6 100* 1.6 .7 229
SYLVAN ROAD 7120 .2 .0 * -M .4 *
TIMBER CREEK 7950 .3 .2 150* 2.6 .4 650
YOUNTS PEAK 8350 .3 .4 75* 1.1 .5 220
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Basin wide percent of average 193* 309
SHOSHONE RIVER
BLACKWATER 9780 .7 1.1 64* .8 .7 114
EVENING STAR 9200 .3 .9 33* .9 .7 129
KIRWIN 9550 1.4 .7 200* 1.9 .4 475
MARQUETTE 8760 .5 -M * 1.9 .6 317
SYLVAN LAKE 8420 .6 .6 100* 1.6 .7 229
SYLVAN ROAD 7120 .2 .0 * -M .4 *
YOUNTS PEAK 8350 .3 .4 75* 1.1 .5 220
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Basin wide percent of average 95* 228
POWDER-TONGUE
BEAR TRAP MEADOW 8200 -M .2 * .9 .5 180
BIG GOOSE 7990 1.9 .2 950* 3.0 .6 500
BONE SPRINGS DIV 9350 2.7 .9 300* 2.7 .7 386
BURGESS JUNCTION 7880 1.7 .5 340* 3.0 .6 500
CLOUD PEAK RESERVOIR 9860 2.0 .4 500* 2.4 .7 343
DOME LAKE 8880 2.3 .6 383* 3.1 .7 443
GRAVE SPRINGS 8550 1.0 .5 200* 1.4 .6 233
HANSEN SAWMILL 8360 .1 .2 50* 1.2 .5 240
LITTLE GOOSE 8870 2.1 -M * 3.2 -M *
MIDDLE POWDER 7760 2.0 .5 400* 3.0 .7 429
POWDER RIVER PASS 9480 1.6 .4 400* 2.0 .6 333
SOLDIER PARK 8720 .9 -M * 1.8 -M *
SUCKER CREEK 8880 2.5 .5 500* 3.1 .7 443
TIE CREEK 6870 .0 .1 0* 3.6 .7 514
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Basin wide percent of average 371* 387
BELLE FOURCHE
BLIND PARK 6890 .0 .3 0* .6 .7 86
COLE CANYON 5910 .0 .2 0* 1.1 .5 220
NORTH RAPID CREEK 6130 .2 .1 200* .4 .7 57
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Basin wide percent of average 33* 111
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 1.3 -M * 1.8 -M *
CINNABAR PARK 9574 .7 .1 700* 1.2 .5 240
COLUMBINE 9160 .0 .0 100* .7 .5 140
DIVIDE PEAK 8880 .9 .4 225* 1.4 .6 233
ELK RIVER 8700 .3 .0 * 1.1 .5 220
JOE WRIGHT 10120 .0 .4 0* .9 .9 100
NORTH FRENCH CREEK 10130 .5 .8 63* 1.1 .7 157
OLD BATTLE 10000 .9 .7 129* 1.2 .7 171
SAGE CREEK BASIN 7850 .3 .0 * .9 .4 225
SOUTH BRUSH CREEK 8440 .5 .1 500* 1.1 .6 183
TOWER 10500 .1 .5 20* 1.2 .8 150
WEBBER SPRINGS 9250 .9 .3 300* 1.5 .7 214
WILLOW CREEK PASS 9540 .3 .1 300* .6 .5 120
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Basin wide percent of average 159* 174
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .6 .5 120* 1.2 .6 200
CASPER MTN. 7900 -M .3 * -M .5 *
DEADMAN HILL 10220 .0 .6 0* 1.4 .6 233
DEER PARK 9700 -M .7 * -M .5 *
LAPRELE CREEK 8375 .9 .1 900* 1.6 .4 400
RENO HILL 8400 2.0 .4 500* 2.1 .6 350
ROACH 9700 1.2 .1 1200* 1.6 .6 267
SAND LAKE 10050 1.3 .8 163* 1.5 .7 214
SOUTH PASS 9040 1.4 .4 350* 1.9 .5 380
WINDY PEAK 7900 .8 .0 * 1.0 .4 250
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Basin wide percent of average 283* 280
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* .5 .4 125
DIVIDE PEAK 8880 .9 .4 225* 1.4 .6 233
OLD BATTLE 10000 .9 .7 129* 1.2 .7 171
SANDSTONE RS 8150 .0 .0 100* .5 .5 100
WHISKEY PARK 8950 .4 .3 133* 1.1 .7 157
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Basin wide percent of average 157* 162
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.0 .2 500* 1.3 .4 325
BLIND BULL SUM 8650 .9 .2 450* .8 .5 160
EAST RIM DIVIDE 7930 .3 .0 * 1.2 .3 400
ELKHART PARK G.S. 9400 .6 .1 600* 1.6 .5 320
GROS VENTRE SUMMIT 8750 .2 .3 67* 1.2 .5 240
GUNSIGHT PASS 9820 .6 -M * 1.2 -M *
KENDALL R.S. 7740 .0 .0 100* 1.4 .4 350
LOOMIS PARK 8240 .2 .1 200* 1.2 .5 240
NEW FORK LAKE 8340 .7 .0 * 1.6 .4 400
POCKET CREEK 9360 1.5 -M * 1.8 -M *
SNIDER BASIN 8060 .2 .0 * 1.1 .3 367
SPRING CREEK DIVIDE 9000 1.1 .0 * 2.0 .5 400
TRIPLE PEAK 8500 .3 .1 300* 1.5 .5 300
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Basin wide percent of average 550* 310
LOWER GREEN RIVER
HAMS FORK 7840 .5 .0 * 1.5 .3 500
HEWINTA 9519 .8 .2 400* 1.8 .6 300
HICKERSON PARK 9145 -M .0 * -M .4 *
HOLE-IN-ROCK 9150 1.5 .0 * 2.4 .4 600
INDIAN CREEK 9425 1.3 .2 650* 1.8 .5 360
KELLEY R.S. 8180 1.1 .0 * 1.9 .5 380
STEEL CREEK PARK 10200 -M .5 * -M .6 *
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Basin wide percent of average 1300* 409
UPPER BEAR RIVER
BUG LAKE 7950 .2 .3 67* 1.0 .6 167
HAYDEN FORK 9212 .8 .2 400* 3.2 .6 533
KELLEY R.S. 8180 1.1 .0 * 1.9 .5 380
LILY LAKE 9156 .9 .3 300* 2.2 .5 440
MONTE CRISTO 8960 -M .4 * -M .7 *
SALT RIVER SUMMIT 7760 .7 .0 * 1.4 .5 280
TRIAL LAKE 9992 1.1 .6 183* 1.9 .7 271
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Basin wide percent of average 343* 341
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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.