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 SATURDAY: OCTOBER 8 , 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 .6 .0 * 1.7 .4 425
COTTONWOOD CREEK 7670 .9 .0 * 2.2 .6 367
GRAND TARGHEE 9260 1.6 -M * 2.1 -M *
GRANITE CREEK 6770 .1 .0 * 1.1 .4 275
GRASSY LAKE 7265 1.2 .0 * 2.3 .7 329
GROS VENTRE SUMMIT 8750 .3 .3 100* 1.1 .4 275
GUNSIGHT PASS 9820 .6 -M * 1.1 -M *
LEWIS LAKE DIVIDE 7850 .7 .0 * 1.3 .6 217
PHILLIPS BENCH 8200 .1 .0 * .8 .5 160
SALT RIVER SUMMIT 7760 -M .0 * -M .4 *
SNAKE RIVER STATION 6920 .4 .0 * 1.5 .5 300
SPRING CREEK DIVIDE 9000 1.1 .0 * 1.9 .5 380
THUMB DIVIDE 7980 .2 .0 * .8 .4 200
TOGWOTEE PASS 9580 .9 .5 180* 1.6 .6 267
TWO OCEAN PLATEAU 9240 1.5 .6 250* 1.5 .6 250
WILLOW CREEK 8380 1.3 .1 1300* 2.4 .8 300
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Basin wide percent of average 620* 289
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .5 .9 56* .9 .4 225
BLACK BEAR 8170 1.4 .5 280* 2.6 .6 433
CANYON 7870 .0 .1 0* .6 .4 150
FISHER CREEK 9100 .5 .6 83* 1.2 .6 200
MADISON PLATEAU 7750 .5 .4 125* 2.3 .5 460
NORTHEAST ENTRANCE 7350 .3 .0 * .4 .4 100
PARKER PEAK 9400 .7 .9 78* .9 .6 150
SYLVAN LAKE 8420 .7 .6 117* 1.5 .6 250
THUMB DIVIDE 7980 .2 .0 * .8 .4 200
TWO OCEAN PLATEAU 9240 1.5 .6 250* 1.5 .6 250
WHISKEY CREEK 6800 .0 .1 0* 1.8 .4 450
WHITE MILL 8700 .5 .4 125* .9 .6 150
WOLVERINE 7650 .0 .1 0* .3 .4 75
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Basin wide percent of average 131* 242
WIND RIVER
BURROUGHS CREEK 8750 .1 .2 50* .6 .4 150
CASTLE CREEK 8400 .3 -M * .8 -M *
COLD SPRINGS 9630 .6 .2 300* .9 .4 225
DEER PARK 9700 .1 .7 14* .9 .5 180
HOBBS PARK 10100 1.1 .6 183* 1.1 .5 220
LITTLE WARM 9370 .3 .2 150* .7 .4 175
SOUTH PASS 9040 .6 .4 150* .9 .4 225
ST. LAWRENCE ALT 8620 .0 .2 0* .5 .4 125
TOGWOTEE PASS 9580 .9 .5 180* 1.6 .6 267
TOWNSEND CREEK 8700 .2 .2 100* .6 .5 120
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Basin wide percent of average 122* 190
BIGHORN BASIN
BALD MTN. 9380 -M 1.1 * -M .6 *
BEAR TRAP MEADOW 8200 1.2 .1 1200* .8 .4 200
BLACKWATER 9780 .8 1.1 73* .8 .6 133
BONE SPRINGS DIV 9350 -M .9 * -M .6 *
EVENING STAR 9200 .4 .9 44* .9 .6 150
GRAVE SPRINGS 8550 .9 .4 225* 1.2 .6 200
KIRWIN 9550 1.4 .6 233* 1.8 .4 450
MARQUETTE 8760 .7 -M * 1.7 .5 340
MIDDLE POWDER 7760 2.0 .4 500* 2.7 .6 450
OWL CREEK 8975 1.3 .4 325* 1.1 .3 367
POWDER RIVER PASS 9480 1.7 .4 425* 1.9 .5 380
SHELL CREEK 9580 2.7 1.1 245* -M .5 *
SYLVAN LAKE 8420 .7 .6 117* 1.5 .6 250
SYLVAN ROAD 7120 .2 .0 * -M .4 *
TIMBER CREEK 7950 .0 .2 0* 2.2 .4 550
YOUNTS PEAK 8350 .3 .3 100* 1.0 .5 200
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Basin wide percent of average 209* 293
SHOSHONE RIVER
BLACKWATER 9780 .8 1.1 73* .8 .6 133
EVENING STAR 9200 .4 .9 44* .9 .6 150
KIRWIN 9550 1.4 .6 233* 1.8 .4 450
MARQUETTE 8760 .7 -M * 1.7 .5 340
SYLVAN LAKE 8420 .7 .6 117* 1.5 .6 250
SYLVAN ROAD 7120 .2 .0 * -M .4 *
YOUNTS PEAK 8350 .3 .3 100* 1.0 .5 200
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Basin wide percent of average 109* 241
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.2 .1 1200* .8 .4 200
BIG GOOSE 7990 2.0 .2 1000* -M .5 *
BONE SPRINGS DIV 9350 -M .9 * -M .6 *
BURGESS JUNCTION 7880 -M .5 * -M .5 *
CLOUD PEAK RESERVOIR 9860 2.1 .3 700* -M .6 *
DOME LAKE 8880 2.4 .5 480* -M .6 *
GRAVE SPRINGS 8550 .9 .4 225* 1.2 .6 200
HANSEN SAWMILL 8360 .4 .1 400* 1.2 .4 300
LITTLE GOOSE 8870 2.1 -M * 3.1 -M *
MIDDLE POWDER 7760 2.0 .4 500* 2.7 .6 450
POWDER RIVER PASS 9480 1.7 .4 425* 1.9 .5 380
SOLDIER PARK 8720 1.1 -M * 1.8 -M *
SUCKER CREEK 8880 -M .4 * -M .6 *
TIE CREEK 6870 .0 .1 0* -M .6 *
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Basin wide percent of average 508* 312*
BELLE FOURCHE
BLIND PARK 6890 .0 .5 0* .5 .6 83
COLE CANYON 5910 .0 .0 100* .7 .4 175
NORTH RAPID CREEK 6130 .2 .0 * .2 .6 33
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Basin wide percent of average 40* 88
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 .2 -M * .7 -M *
CINNABAR PARK 9574 .3 .0 * .8 .5 160
COLUMBINE 9160 .0 .0 100* .4 .5 80
DIVIDE PEAK 8880 .1 .4 25* .6 .5 120
ELK RIVER 8700 .0 .0 100* .7 .4 175
JOE WRIGHT 10120 .0 .4 0* .3 .7 43
NORTH FRENCH CREEK 10130 .0 .7 0* .5 .6 83
OLD BATTLE 10000 .3 .6 50* .6 .6 100
SAGE CREEK BASIN 7850 .0 .0 100* .5 .3 167
SOUTH BRUSH CREEK 8440 .1 .1 100* .6 .5 120
TOWER 10500 .0 .5 0* .8 .7 114
WEBBER SPRINGS 9250 .0 .3 0* .6 .6 100
WILLOW CREEK PASS 9540 .0 .1 0* .0 .4 0
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Basin wide percent of average 26* 102
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .5 0* .7 .5 140
CASPER MTN. 7900 .4 .3 133* 1.2 .5 240
DEADMAN HILL 10220 -M .5 * .4 .5 80
DEER PARK 9700 .1 .7 14* .9 .5 180
LAPRELE CREEK 8375 .1 .1 100* .7 .4 175
RENO HILL 8400 .4 .4 100* .5 .5 100
ROACH 9700 .3 .1 300* .7 .5 140
SAND LAKE 10050 .2 .8 25* .5 .6 83
SOUTH PASS 9040 .6 .4 150* .9 .4 225
WINDY PEAK 7900 .1 .0 * .4 .4 100
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Basin wide percent of average 67* 144
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 .0 * .4 .3 133
DIVIDE PEAK 8880 .1 .4 25* .6 .5 120
OLD BATTLE 10000 .3 .6 50* .6 .6 100
SANDSTONE RS 8150 .0 .0 100* .4 .4 100
WHISKEY PARK 8950 .0 .2 0* .7 .6 117
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Basin wide percent of average 42* 113
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.1 .2 550* 1.3 .4 325
BLIND BULL SUM 8650 .9 .1 900* .9 .4 225
EAST RIM DIVIDE 7930 .4 .0 * 1.2 .3 400
ELKHART PARK G.S. 9400 .4 .0 * 1.4 .5 280
GROS VENTRE SUMMIT 8750 .3 .3 100* 1.1 .4 275
GUNSIGHT PASS 9820 .6 -M * 1.1 -M *
KENDALL R.S. 7740 .1 .0 * 1.3 .3 433
LOOMIS PARK 8240 .1 .1 100* 1.1 .4 275
NEW FORK LAKE 8340 .6 .0 * 1.2 .4 300
POCKET CREEK 9360 1.5 -M * 1.7 -M *
SNIDER BASIN 8060 .3 .0 * 1.0 .3 333
SPRING CREEK DIVIDE 9000 1.1 .0 * 1.9 .5 380
TRIPLE PEAK 8500 .5 .0 * 1.4 .5 280
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Basin wide percent of average 829* 314
LOWER GREEN RIVER
HAMS FORK 7840 .7 .0 * 1.0 .3 333
HEWINTA 9519 .4 .2 200* 1.3 .5 260
HICKERSON PARK 9145 -M .0 * -M .4 *
HOLE-IN-ROCK 9150 .9 .0 * 1.3 .4 325
INDIAN CREEK 9425 1.2 .2 600* 1.6 .5 320
KELLEY R.S. 8180 1.2 .0 * 1.8 .4 450
STEEL CREEK PARK 10200 -M .5 * -M .5 *
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Basin wide percent of average 1100* 333
UPPER BEAR RIVER
BUG LAKE 7950 -M .3 * -M .5 *
HAYDEN FORK 9212 -M .2 * -M .5 *
KELLEY R.S. 8180 1.2 .0 * 1.8 .4 450
LILY LAKE 9156 .5 .3 167* 1.7 .5 340
MONTE CRISTO 8960 -M .4 * -M .6 *
SALT RIVER SUMMIT 7760 -M .0 * -M .4 *
TRIAL LAKE 9992 -M .5 * -M .6 *
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Basin wide percent of average 567* 389*
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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.