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 THURSDAY: OCTOBER 4 , 2007
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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 .2 .0 * .4 .2 200
COTTONWOOD CREEK 7600 .0 .0 100* .2 .3 67
GRANITE CREEK 6770 .2 .0 * .3 .2 150
GRASSY LAKE 7265 .2 .1 200* .6 .3 200
GROS VENTRE SUMMIT 8750 .1 .1 100* .1 .2 50
LEWIS LAKE DIVIDE 7850 -M .0 * -M .3 *
PHILLIPS BENCH 8200 .0 .0 100* .7 .2 350
SALT RIVER SUMMIT 7600 .1 .0 * .0 .2 0
SNAKE RIVER STATION 6920 .1 .0 * .6 .2 300
SPRING CREEK DIVIDE 9000 .1 .1 100* .2 .3 67
THUMB DIVIDE 7980 .1 .0 * .5 .2 250
TOGWOTEE PASS 9580 .6 .2 300* .8 .3 267
TWO OCEAN PLATEAU 9240 .9 .3 300* .8 .3 267
WILLOW CREEK 8450 .1 .1 100* .2 .4 50
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Basin wide percent of average 222* 164
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .7 .6 117* .4 .2 200
BLACK BEAR 8170 .4 .4 100* .7 .3 233
CANYON 8090 .1 .1 100* .3 .2 150
FISHER CREEK 9100 1.6 .4 400* 1.3 .3 433
MADISON PLATEAU 7750 .3 .2 150* .6 .3 200
NORTHEAST ENTRANCE 7350 .1 .0 * .3 .2 150
PARKER PEAK 9400 .5 .6 83* .0 .2 0
SYLVAN LAKE 8420 .3 .5 60* .3 .3 100
THUMB DIVIDE 7980 .1 .0 * .5 .2 250
TWO OCEAN PLATEAU 9240 .9 .3 300* .8 .3 267
WHISKEY CREEK 6800 .2 .1 200* .8 .2 400
WHITE MILL 8700 .8 .3 267* .6 .3 200
WOLVERINE 7650 .1 .0 * .2 .2 100
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Basin wide percent of average 166* 212
WIND RIVER
BURROUGHS CREEK 8750 .6 .2 300* .5 .2 250
COLD SPRINGS 9630 .1 .2 50* .1 .2 50
DEER PARK 9700 .1 .4 25* .1 .3 33
HOBBS PARK 10100 .1 .4 25* .3 .2 150
LITTLE WARM 9370 .3 .2 150* .3 .2 150
SOUTH PASS 9040 .1 .2 50* .0 .2 0
ST. LAWRENCE ALT 8620 .2 .1 200* .1 .2 50
TOGWOTEE PASS 9580 .6 .2 300* .8 .3 267
TOWNSEND CREEK 8700 .1 .1 100* .1 .2 50
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Basin wide percent of average 110* 115
BIGHORN BASIN
BALD MTN. 9380 .0 .8 0* .1 .2 50
BEAR TRAP MEADOW 8200 .1 .1 100* .1 .2 50
BLACKWATER 9780 .4 .8 50* .5 .3 167
BONE SPRINGS DIV 9350 -M .7 * -M .3 *
EVENING STAR 9200 .7 .6 117* .0 .3 0
GRAVE SPRINGS 8550 .1 .1 100* .1 .2 50
KIRWIN 9550 .6 .5 120* .4 .2 200
MARQUETTE 8760 .0 .5 0* .0 .2 0
MIDDLE POWDER 7760 .3 .3 100* .3 .3 100
OWL CREEK 8975 .0 .2 0* .1 .1 100
POWDER RIVER PASS 9480 .2 .3 67* .5 .2 250
SHELL CREEK 9580 .8 .9 89* .4 .2 200
SYLVAN LAKE 8420 .3 .5 60* .3 .3 100
SYLVAN ROAD 7120 .0 .0 100* .2 .2 100
TIMBER CREEK 7950 .0 .0 100* .0 .2 0
YOUNTS PEAK 8350 .4 .2 200* .6 .2 300
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Basin wide percent of average 67* 109
SHOSHONE RIVER
BLACKWATER 9780 .4 .8 50* .5 .3 167
EVENING STAR 9200 .7 .6 117* .0 .3 0
KIRWIN 9550 .6 .5 120* .4 .2 200
MARQUETTE 8760 .0 .5 0* .0 .2 0
SYLVAN LAKE 8420 .3 .5 60* .3 .3 100
SYLVAN ROAD 7120 .0 .0 100* .2 .2 100
YOUNTS PEAK 8350 .4 .2 200* .6 .2 300
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Basin wide percent of average 77* 118
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .1 .1 100* .1 .2 50
BIG GOOSE 7990 .1 .1 100* .0 .2 0
BONE SPRINGS DIV 9350 -M .7 * -M .3 *
BURGESS JUNCTION 7880 .0 .4 0* .1 .2 50
CLOUD PEAK RESERVOIR 9860 .4 .2 200* .3 .3 100
DOME LAKE 8880 .0 .4 0* .2 .3 67
GRAVE SPRINGS 8550 .1 .1 100* .1 .2 50
HANSEN SAWMILL 8360 .3 .1 300* .1 .2 50
MIDDLE POWDER 7760 .3 .3 100* .3 .3 100
POWDER RIVER PASS 9480 .2 .3 67* .5 .2 250
SUCKER CREEK 8880 .1 .3 33* .2 .2 100
TIE CREEK 6870 .0 .0 100* .1 .3 33
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Basin wide percent of average 70* 77
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* .1 .3 33
COLE CANYON 5910 .0 .0 100* .0 -M *
NORTH RAPID CREEK 6130 .0 .0 100* .1 .3 33
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Basin wide percent of average * 33
UPPER N. PLATTE RIVER
COLUMBINE 9160 .1 .0 * 1.4 .2 700
DIVIDE PEAK 8860 -M .2 * -M .3 *
ELK RIVER 8700 .0 .0 100* .5 .2 250
JOE WRIGHT 10120 .3 .2 150* 1.3 .3 433
NORTH FRENCH CREEK 10130 .8 .4 200* .8 .3 267
OLD BATTLE 9920 .8 .4 200* 1.1 .4 275
SAGE CREEK BASIN 7850 .1 .1 100* .3 .2 150
SOUTH BRUSH CREEK 8440 .2 .0 * .7 .3 233
TOWER 10500 1.3 .3 433* 1.4 .4 350
WEBBER SPRINGS 9250 .1 .2 50* .7 .3 233
WILLOW CREEK PASS 9540 .2 .1 200* .7 .2 350
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Basin wide percent of average 212* 318
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 .1 .4 25* .5 .3 167
CASPER MTN. 7850 .1 .1 100* .3 .3 100
DEADMAN HILL 10220 .5 .4 125* .4 .3 133
DEER PARK 9700 .1 .4 25* .1 .3 33
LAPRELE CREEK 8375 .0 .1 0* .3 .2 150
RENO HILL 8500 .1 .2 50* .3 .3 100
ROACH 9700 .1 .1 100* .5 .2 250
SAND LAKE 10050 .9 .6 150* .7 .3 233
SOUTH PASS 9040 .1 .2 50* .0 .2 0
WINDY PEAK 7900 .0 .0 100* .2 .2 100
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Basin wide percent of average 80* 127
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 .0 * .6 .2 300
DIVIDE PEAK 8860 -M .2 * -M .3 *
OLD BATTLE 9920 .8 .4 200* 1.1 .4 275
SANDSTONE RS 8150 .0 .0 100* .4 .2 200
WHISKEY PARK 8950 .0 .1 0* .8 .3 267
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Basin wide percent of average 160* 264
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .1 .1 100* .1 .2 50
BLIND BULL SUM 8900 .0 .1 0* .2 .2 100
EAST RIM DIVIDE 7930 .0 .0 100* .1 .1 100
ELKHART PARK G.S. 9400 .0 .0 100* .4 .2 200
GROS VENTRE SUMMIT 8750 .1 .1 100* .1 .2 50
KENDALL R.S. 7740 .1 .0 * .1 .2 50
LOOMIS PARK 8240 .1 .0 * .1 .2 50
NEW FORK LAKE 8340 .0 .0 100* .1 .2 50
SNIDER BASIN 8060 .3 .0 * .1 .2 50
SPRING CREEK DIVIDE 9000 .1 .1 100* .2 .3 67
TRIPLE PEAK 8500 .1 .0 * .3 .2 150
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Basin wide percent of average 75* 82
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* .1 .1 100
HEWINTA 9500 .0 .1 0* .8 .2 400
HICKERSON PARK 9100 .0 .0 100* .2 .2 100
HOLE-IN-ROCK 9150 .0 .0 100* .4 .2 200
INDIAN CREEK 9425 .1 .1 100* .1 .3 33
KELLEY R.S. 8180 .0 .0 100* .1 .2 50
STEEL CREEK PARK 10100 1.5 .4 375* .4 .2 200
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Basin wide percent of average 267* 150
UPPER BEAR RIVER
BUG LAKE 7950 .0 .3 0* .0 .2 0
HAYDEN FORK 9100 .1 .2 50* .4 .2 200
KELLEY R.S. 8180 .0 .0 100* .1 .2 50
LILY LAKE 9050 .0 .2 0* .6 .2 300
MONTE CRISTO 8960 .0 .3 0* .3 .3 100
SALT RIVER SUMMIT 7600 .1 .0 * .0 .2 0
TRIAL LAKE 9960 .1 .4 25* .2 .3 67
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Basin wide percent of average 14* 100
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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.