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 6 , 2008
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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 .0 .0 100 .8 .3 267
COTTONWOOD CREEK 7670 .0 .0 100 .6 .4 150
GRAND TARGHEE 9260 .6 -M * 1.2 -M *
GRANITE CREEK 6770 .1 .0 .6 .3 200
GRASSY LAKE 7265 .1 .0 1.0 .5 200
GROS VENTRE SUMMIT 8750 .1 .2 50 .5 .3 167
GUNSIGHT PASS 9820 .2 -M * .3 -M *
LEWIS LAKE DIVIDE 7850 .0 .0 100 1.1 .4 275
PHILLIPS BENCH 8200 .0 .0 100 .5 .3 167
SALT RIVER SUMMIT 7760 .0 .0 100 .3 .3 100
SNAKE RIVER STATION 6920 .3 .0 .4 .3 133
SPRING CREEK DIVIDE 9000 .0 .0 100 .3 .3 100
THUMB DIVIDE 7980 .3 .0 .9 .3 300
TOGWOTEE PASS 9580 .0 .3 0 .5 .4 125
TWO OCEAN PLATEAU 9240 .3 .4 75 .5 .4 125
WILLOW CREEK 8380 .1 .0 .9 .6 150
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Basin wide percent of average 44 175
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .1 .7 14 .2 .3 67
BLACK BEAR 8170 .2 .4 50 2.0 .4 500
CANYON 7870 .2 .1 200 .0 .2 0
FISHER CREEK 9100 .3 .5 60 .7 .4 175
MADISON PLATEAU 7750 .1 .3 33 1.1 .4 275
NORTHEAST ENTRANCE 7350 .0 .0 100 .3 .3 100
PARKER PEAK 9400 .1 .8 12 .4 .4 100
SYLVAN LAKE 8420 .1 .6 17 .9 .4 225
THUMB DIVIDE 7980 .3 .0 .9 .3 300
TWO OCEAN PLATEAU 9240 .3 .4 75 .5 .4 125
WHISKEY CREEK 6800 .0 .1 0 .5 .3 167
WHITE MILL 8700 .2 .3 67 .5 .4 125
WOLVERINE 7650 .1 .1 100 .0 .3 0
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Basin wide percent of average 40 178
WIND RIVER
BURROUGHS CREEK 8750 .1 .2 50 .0 .3 0
COLD SPRINGS 9630 .0 .3 0 .3 .3 100
DEER PARK 9700 .0 .6 0 .7 .3 233
HOBBS PARK 10100 .1 .6 17 .2 .3 67
LITTLE WARM 9370 .0 .2 0 .4 .3 133
SOUTH PASS 9040 .0 .4 0 .8 .3 267
ST. LAWRENCE ALT 8620 .1 .2 50 .1 .3 33
TOGWOTEE PASS 9580 .0 .3 0 .5 .4 125
TOWNSEND CREEK 8700 .1 .2 50 .2 .3 67
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Basin wide percent of average 13 114
BIGHORN BASIN
BALD MTN. 9380 .2 .9 22 .5 .4 125
BEAR TRAP MEADOW 8200 .3 .2 150 .5 .3 167
BLACKWATER 9780 .0 .9 0 .4 .4 100
BONE SPRINGS DIV 9350 .0 .7 0 .5 .4 125
EVENING STAR 9200 .3 .7 43 .5 .4 125
GRAVE SPRINGS 8550 .0 .3 0 .4 .4 100
KIRWIN 9550 .1 .5 20 .1 .3 33
MARQUETTE 8760 .0 .6 0 .0 .4 0
MIDDLE POWDER 7760 .3 .3 100 .7 .4 175
OWL CREEK 8975 .0 .3 0 .1 .2 50
POWDER RIVER PASS 9480 .3 .4 75 .7 .4 175
SHELL CREEK 9580 .4 1.0 40 1.2 .4 300
SYLVAN LAKE 8420 .1 .6 17 .9 .4 225
SYLVAN ROAD 7120 .2 .0 .5 .3 167
TIMBER CREEK 7950 .0 .2 0 .3 .3 100
YOUNTS PEAK 8350 .0 .2 0 .2 .3 67
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Basin wide percent of average 26 132
SHOSHONE RIVER
BLACKWATER 9780 .0 .9 0 .4 .4 100
EVENING STAR 9200 .3 .7 43 .5 .4 125
KIRWIN 9550 .1 .5 20 .1 .3 33
MARQUETTE 8760 .0 .6 0 .0 .4 0
SYLVAN LAKE 8420 .1 .6 17 .9 .4 225
SYLVAN ROAD 7120 .2 .0 .5 .3 167
YOUNTS PEAK 8350 .0 .2 0 .2 .3 67
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Basin wide percent of average 14 104
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .3 .2 150 .5 .3 167
BIG GOOSE 7990 .0 .1 0 .3 .4 75
BONE SPRINGS DIV 9350 .0 .7 0 .5 .4 125
BURGESS JUNCTION 7880 .0 .4 0 .5 .4 125
CLOUD PEAK RESERVOIR 9860 .1 .2 50 .2 .4 50
DOME LAKE 8880 .0 .4 0 .2 .4 50
GRAVE SPRINGS 8550 .0 .3 0 .4 .4 100
HANSEN SAWMILL 8360 .0 .1 0 .0 .3 0
MIDDLE POWDER 7760 .3 .3 100 .7 .4 175
POWDER RIVER PASS 9480 .3 .4 75 .7 .4 175
SUCKER CREEK 8880 .1 .3 33 .5 .4 125
TIE CREEK 6870 .0 .1 0 .4 .5 80
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Basin wide percent of average 31 104
BELLE FOURCHE
BLIND PARK 6890 .1 .4 25 .0 .4 0
COLE CANYON 5910 .3 .0 .0 .3 0
NORTH RAPID CREEK 6130 .0 .0 100 .1 .4 25
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Basin wide percent of average 25 9
UPPER N. PLATTE RIVER
COLUMBINE 9160 .1 .0 .1 .3 33
DIVIDE PEAK 8880 .0 .3 0 -M .4 *
ELK RIVER 8700 .1 .0 .7 .3 233
JOE WRIGHT 10120 .0 .3 0 .4 .5 80
NORTH FRENCH CREEK 10130 .0 .5 0 .2 .4 50
OLD BATTLE 10000 .1 .5 20 .8 .5 160
SAGE CREEK BASIN 7850 .0 .0 100 .3 .2 150
SOUTH BRUSH CREEK 8440 .0 .0 100 .0 .4 0
TOWER 10500 .1 .3 33 .7 .5 140
WEBBER SPRINGS 9250 .0 .2 0 .5 .4 125
WILLOW CREEK PASS 9540 .1 .0 .3 .3 100
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Basin wide percent of average 10 105
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .4 0 .0 .3 0
CASPER MTN. 7900 .0 .2 0 .0 .3 0
DEADMAN HILL 10220 .0 .4 0 .1 .4 25
DEER PARK 9700 .0 .6 0 .7 .3 233
LAPRELE CREEK 8375 .0 .1 0 .0 .3 0
RENO HILL 8400 .0 .3 0 .0 .3 0
ROACH 9700 .1 .1 100 .2 .4 50
SAND LAKE 10050 .0 .6 0 .0 .4 0
SOUTH PASS 9040 .0 .4 0 .8 .3 267
WINDY PEAK 7900 .0 .0 100 .0 .3 0
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Basin wide percent of average 3 55
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 .4 .2 200
DIVIDE PEAK 8880 .0 .3 0 -M .4 *
OLD BATTLE 10000 .1 .5 20 .8 .5 160
SANDSTONE RS 8150 .0 .0 100 .4 .3 133
WHISKEY PARK 8950 .0 .2 0 .5 .4 125
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Basin wide percent of average 10 150
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .1 .1 100 .6 .3 200
BLIND BULL SUM 8650 .0 .0 100 .5 .3 167
EAST RIM DIVIDE 7930 .0 .0 100 .4 .2 200
ELKHART PARK G.S. 9400 .0 .0 100 .7 .3 233
GROS VENTRE SUMMIT 8750 .1 .2 50 .5 .3 167
GUNSIGHT PASS 9820 .2 -M * .3 -M *
KENDALL R.S. 7740 .1 .0 .4 .2 200
LOOMIS PARK 8240 .0 .0 100 .7 .3 233
NEW FORK LAKE 8340 .2 .0 .5 .3 167
SNIDER BASIN 8060 .3 .0 .2 .2 100
SPRING CREEK DIVIDE 9000 .0 .0 100 .3 .3 100
TRIPLE PEAK 8500 .2 .0 .3 .3 100
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Basin wide percent of average 67 170
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100 .2 .2 100
HEWINTA 9519 .0 .1 0 .1 .3 33
HICKERSON PARK 9145 .0 .0 100 .3 .3 100
HOLE-IN-ROCK 9150 .0 .0 100 .2 .3 67
INDIAN CREEK 9425 .0 .1 0 .2 .3 67
KELLEY R.S. 8180 .2 .0 .6 .3 200
STEEL CREEK PARK 10200 .2 .4 50 .4 .3 133
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Basin wide percent of average 33 100
UPPER BEAR RIVER
BUG LAKE 7950 .1 .3 33 .7 .3 233
HAYDEN FORK 9212 .1 .2 50 .8 .4 200
KELLEY R.S. 8180 .2 .0 .6 .3 200
LILY LAKE 9156 .2 .2 100 .8 .3 267
MONTE CRISTO 8960 .1 .3 33 1.0 .4 250
SALT RIVER SUMMIT 7760 .0 .0 100 .3 .3 100
TRIAL LAKE 9992 .3 .5 60 1.0 .4 250
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Basin wide percent of average 53 217
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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.