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 MONDAY: OCTOBER 10 , 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 .1 .0 * 1.7 .5 340
COTTONWOOD CREEK 7670 .5 .0 * 2.3 .8 288
GRAND TARGHEE 9260 1.5 -M * 2.4 -M *
GRANITE CREEK 6770 .1 .0 * 1.1 .5 220
GRASSY LAKE 7265 .8 .0 * 2.3 .9 256
GROS VENTRE SUMMIT 8750 .2 .3 67* 1.2 .6 200
GUNSIGHT PASS 9820 .5 -M * 1.2 -M *
LEWIS LAKE DIVIDE 7850 .2 .0 * 1.3 .7 186
PHILLIPS BENCH 8200 .0 .0 100* .8 .6 133
SALT RIVER SUMMIT 7760 -M .0 * -M .5 *
SNAKE RIVER STATION 6920 .1 .0 * 1.5 .6 250
SPRING CREEK DIVIDE 9000 1.0 .1 1000* 2.0 .6 333
THUMB DIVIDE 7980 .0 .0 100* .8 .6 133
TOGWOTEE PASS 9580 .8 .6 133* 1.6 .8 200
TWO OCEAN PLATEAU 9240 1.6 .8 200* 1.7 .8 213
WILLOW CREEK 8380 1.0 .2 500* 2.4 1.0 240
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Basin wide percent of average 320* 230
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .5 1.0 50* .9 .6 150
BLACK BEAR 8170 1.2 .6 200* 2.5 .8 313
CANYON 7870 .0 .1 0* .6 .5 120
FISHER CREEK 9100 .5 .7 71* 1.4 .8 175
MADISON PLATEAU 7750 .3 .4 75* 2.2 .7 314
NORTHEAST ENTRANCE 7350 .1 .1 100* .5 .5 100
PARKER PEAK 9400 .6 .9 67* 1.0 .7 143
SYLVAN LAKE 8420 .5 .6 83* 1.6 .7 229
THUMB DIVIDE 7980 .0 .0 100* .8 .6 133
TWO OCEAN PLATEAU 9240 1.6 .8 200* 1.7 .8 213
WHISKEY CREEK 6800 .0 .1 0* 1.8 .5 360
WHITE MILL 8700 .5 .5 100* 1.0 .7 143
WOLVERINE 7650 .0 .1 0* .5 .6 83
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Basin wide percent of average 98* 194
WIND RIVER
BURROUGHS CREEK 8750 .1 .2 50* .8 .5 160
CASTLE CREEK 8400 .1 -M * .7 -M *
COLD SPRINGS 9630 .6 .2 300* 1.1 .5 220
DEER PARK 9700 .9 .7 129* 1.9 .6 317
HOBBS PARK 10100 1.9 .6 317* 1.9 .6 317
LITTLE WARM 9370 .2 .2 100* .7 .5 140
SOUTH PASS 9040 1.2 .4 300* 1.8 .5 360
ST. LAWRENCE ALT 8620 .1 .2 50* .8 .5 160
TOGWOTEE PASS 9580 .8 .6 133* 1.6 .8 200
TOWNSEND CREEK 8700 1.1 .2 550* 1.9 .6 317
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Basin wide percent of average 209* 245
BIGHORN BASIN
BALD MTN. 9380 2.3 1.2 192* 2.3 .8 288
BEAR TRAP MEADOW 8200 -M .1 * .9 .5 180
BLACKWATER 9780 .8 1.2 67* 1.0 .8 125
BONE SPRINGS DIV 9350 2.6 1.0 260* 2.7 .8 338
EVENING STAR 9200 .4 1.0 40* 1.0 .7 143
GRAVE SPRINGS 8550 .9 .4 225* 1.4 .7 200
KIRWIN 9550 1.3 .7 186* 1.8 .5 360
MARQUETTE 8760 .6 -M * 2.0 .7 286
MIDDLE POWDER 7760 1.9 .5 380* 2.9 .8 363
OWL CREEK 8975 1.2 .4 300* 1.1 .4 275
POWDER RIVER PASS 9480 1.5 .4 375* 1.9 .6 317
SHELL CREEK 9580 2.8 1.3 215* 2.7 .6 450
SYLVAN LAKE 8420 .5 .6 83* 1.6 .7 229
SYLVAN ROAD 7120 .2 .0 * .0 .5 0
TIMBER CREEK 7950 .2 .2 100* 2.7 .5 540
YOUNTS PEAK 8350 .2 .4 50* 1.1 .6 183
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Basin wide percent of average 181* 266
SHOSHONE RIVER
BLACKWATER 9780 .8 1.2 67* 1.0 .8 125
EVENING STAR 9200 .4 1.0 40* 1.0 .7 143
KIRWIN 9550 1.3 .7 186* 1.8 .5 360
MARQUETTE 8760 .6 -M * 2.0 .7 286
SYLVAN LAKE 8420 .5 .6 83* 1.6 .7 229
SYLVAN ROAD 7120 .2 .0 * .0 .5 0
YOUNTS PEAK 8350 .2 .4 50* 1.1 .6 183
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Basin wide percent of average 87* 189
POWDER-TONGUE
BEAR TRAP MEADOW 8200 -M .1 * .9 .5 180
BIG GOOSE 7990 1.7 .2 850* 3.0 .7 429
BONE SPRINGS DIV 9350 2.6 1.0 260* 2.7 .8 338
BURGESS JUNCTION 7880 1.6 .5 320* 3.1 .7 443
CLOUD PEAK RESERVOIR 9860 1.8 .4 450* 2.4 .8 300
DOME LAKE 8880 2.1 .6 350* 3.1 .8 388
GRAVE SPRINGS 8550 .9 .4 225* 1.4 .7 200
HANSEN SAWMILL 8360 .0 .1 0* 1.2 .5 240
LITTLE GOOSE 8870 2.1 -M * 3.3 -M *
MIDDLE POWDER 7760 1.9 .5 380* 2.9 .8 363
POWDER RIVER PASS 9480 1.5 .4 375* 1.9 .6 317
SOLDIER PARK 8720 .8 -M * 1.9 -M *
SUCKER CREEK 8880 2.5 .5 500* 3.0 .7 429
TIE CREEK 6870 .0 .0 100* 3.7 .8 463
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Basin wide percent of average 361* 349
BELLE FOURCHE
BLIND PARK 6890 .0 .2 0* .6 .7 86
COLE CANYON 5910 .0 .2 0* 1.2 .6 200
NORTH RAPID CREEK 6130 .2 .1 200* .4 .8 50
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Basin wide percent of average 40* 105
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 1.2 -M * 1.8 -M *
CINNABAR PARK 9574 .6 .1 600* 1.2 .6 200
COLUMBINE 9160 .0 .0 100* .7 .6 117
DIVIDE PEAK 8880 .8 .5 160* 1.4 .7 200
ELK RIVER 8700 .0 .1 0* 1.2 .6 200
JOE WRIGHT 10120 .0 .5 0* 1.0 1.0 100
NORTH FRENCH CREEK 10130 .5 .9 56* 1.1 .8 138
OLD BATTLE 10000 .9 .8 113* 1.3 .9 144
SAGE CREEK BASIN 7850 .1 .1 100* .9 .4 225
SOUTH BRUSH CREEK 8440 .3 .1 300* 1.1 .7 157
TOWER 10500 .2 .6 33* 1.2 .9 133
WEBBER SPRINGS 9250 .8 .3 267* 1.5 .8 188
WILLOW CREEK PASS 9540 .3 .2 150* .7 .5 140
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Basin wide percent of average 107* 156
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .6 .6 100* 1.3 .6 217
CASPER MTN. 7900 2.9 .4 725* -M .6 *
DEADMAN HILL 10220 .3 .6 50* 1.3 .7 186
DEER PARK 9700 .9 .7 129* 1.9 .6 317
LAPRELE CREEK 8375 .8 .2 400* 1.7 .5 340
RENO HILL 8400 2.0 .5 400* 2.3 .6 383
ROACH 9700 1.2 .2 600* 1.6 .6 267
SAND LAKE 10050 1.3 .9 144* 1.6 .8 200
SOUTH PASS 9040 1.2 .4 300* 1.8 .5 360
WINDY PEAK 7900 .6 .0 * 1.1 .5 220
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Basin wide percent of average 262* 270
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 .0 * .6 .4 150
DIVIDE PEAK 8880 .8 .5 160* 1.4 .7 200
OLD BATTLE 10000 .9 .8 113* 1.3 .9 144
SANDSTONE RS 8150 .0 .0 100* .5 .6 83
WHISKEY PARK 8950 .3 .3 100* 1.1 .8 138
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Basin wide percent of average 131* 144
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .9 .2 450* 1.4 .5 280
BLIND BULL SUM 8650 .8 .2 400* .9 .5 180
EAST RIM DIVIDE 7930 .3 .0 * 1.2 .4 300
ELKHART PARK G.S. 9400 .7 .1 700* 1.7 .6 283
GROS VENTRE SUMMIT 8750 .2 .3 67* 1.2 .6 200
GUNSIGHT PASS 9820 .5 -M * 1.2 -M *
KENDALL R.S. 7740 .0 .0 100* 1.4 .4 350
LOOMIS PARK 8240 .1 .1 100* 1.2 .5 240
NEW FORK LAKE 8340 .6 .0 * 1.6 .4 400
POCKET CREEK 9360 1.4 -M * 2.0 -M *
SNIDER BASIN 8060 .1 .0 * 1.1 .4 275
SPRING CREEK DIVIDE 9000 1.0 .1 1000* 2.0 .6 333
TRIPLE PEAK 8500 .1 .1 100* 1.4 .6 233
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Basin wide percent of average 436* 275
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 * 1.5 .4 375
HEWINTA 9519 .2 .2 100* 2.2 .7 314
HICKERSON PARK 9145 -M .0 * -M .5 *
HOLE-IN-ROCK 9150 1.3 .0 * 2.5 .5 500
INDIAN CREEK 9425 1.2 .2 600* 1.6 .6 267
KELLEY R.S. 8180 .9 .0 * 1.8 .5 360
STEEL CREEK PARK 10200 -M .6 * -M .6 *
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Basin wide percent of average 925* 356
UPPER BEAR RIVER
BUG LAKE 7950 -M .4 * -M .6 *
HAYDEN FORK 9212 -M .3 * -M .6 *
KELLEY R.S. 8180 .9 .0 * 1.8 .5 360
LILY LAKE 9156 .7 .3 233* 2.3 .6 383
MONTE CRISTO 8960 -M .5 * -M .8 *
SALT RIVER SUMMIT 7760 -M .0 * -M .5 *
TRIAL LAKE 9992 1.0 .6 167* 1.8 .7 257
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Basin wide percent of average 289* 328*
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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.