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 11 , 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 .2 .0 1.3 .6 217
COTTONWOOD CREEK 7670 .0 .0 100 .8 .9 89
GRAND TARGHEE 9260 .7 -M * 1.8 -M *
GRANITE CREEK 6770 .2 .0 .8 .5 160
GRASSY LAKE 7265 .4 .1 400 1.3 1.0 130
GROS VENTRE SUMMIT 8750 .4 .4 100 .8 .6 133
GUNSIGHT PASS 9820 .1 -M * .4 -M *
LEWIS LAKE DIVIDE 7850 .0 .0 100 1.4 .8 175
PHILLIPS BENCH 8200 .0 .0 100 .6 .7 86
SALT RIVER SUMMIT 7760 .0 .0 100 .4 .6 67
SNAKE RIVER STATION 6920 .3 .0 .9 .7 129
SPRING CREEK DIVIDE 9000 .1 .1 100 .5 .7 71
THUMB DIVIDE 7980 .1 .0 1.3 .6 217
TOGWOTEE PASS 9580 .4 .7 57 1.0 .9 111
TWO OCEAN PLATEAU 9240 .8 .8 100 .9 .9 100
WILLOW CREEK 8380 .2 .2 100 1.1 1.1 100
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Basin wide percent of average 100 124
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .4 1.0 40 .5 .6 83
BLACK BEAR 8170 .5 .6 83 2.4 .9 267
CANYON 7870 .3 .2 150 .2 .5 40
FISHER CREEK 9100 .6 .7 86 .8 .9 89
MADISON PLATEAU 7750 .2 .4 50 1.1 .8 138
NORTHEAST ENTRANCE 7350 .3 .0 .6 .5 120
PARKER PEAK 9400 .5 1.0 50 1.1 .8 138
SYLVAN LAKE 8420 .3 .6 50 1.2 .8 150
THUMB DIVIDE 7980 .1 .0 1.3 .6 217
TWO OCEAN PLATEAU 9240 .8 .8 100 .9 .9 100
WHISKEY CREEK 6800 .0 .1 0 .8 .6 133
WHITE MILL 8700 .5 .5 100 .7 .8 87
WOLVERINE 7650 .5 .1 500 .3 .6 50
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Basin wide percent of average 77 128
WIND RIVER
BURROUGHS CREEK 8750 .8 .2 400 1.0 .5 200
COLD SPRINGS 9630 .4 .2 200 .8 .6 133
DEER PARK 9700 .4 .7 57 1.4 .7 200
HOBBS PARK 10100 1.0 .7 143 1.1 .6 183
LITTLE WARM 9370 .7 .3 233 .8 .5 160
SOUTH PASS 9040 .5 .4 125 1.6 .6 267
ST. LAWRENCE ALT 8620 .8 .1 800 .9 .5 180
TOGWOTEE PASS 9580 .4 .7 57 1.0 .9 111
TOWNSEND CREEK 8700 .7 .3 233 1.0 .7 143
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Basin wide percent of average 158 171
BIGHORN BASIN
BALD MTN. 9380 1.1 1.3 85 1.2 .8 150
BEAR TRAP MEADOW 8200 .5 .2 250 1.2 .6 200
BLACKWATER 9780 .6 1.3 46 .9 .8 112
BONE SPRINGS DIV 9350 .8 1.1 73 1.3 .9 144
EVENING STAR 9200 .5 1.0 50 1.0 .8 125
GRAVE SPRINGS 8550 .4 .4 100 1.0 .8 125
KIRWIN 9550 .6 .8 75 .5 .6 83
MARQUETTE 8760 .5 .8 62 .8 .7 114
MIDDLE POWDER 7760 .7 .5 140 1.3 .8 162
OWL CREEK 8975 .6 .4 150 .5 .4 125
POWDER RIVER PASS 9480 .5 .4 125 1.3 .7 186
SHELL CREEK 9580 1.2 1.4 86 2.0 .7 286
SYLVAN LAKE 8420 .3 .6 50 1.2 .8 150
SYLVAN ROAD 7120 .3 .0 .9 .5 180
TIMBER CREEK 7950 .6 .1 600 1.3 .5 260
YOUNTS PEAK 8350 .5 .5 100 .8 .6 133
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Basin wide percent of average 87 156
SHOSHONE RIVER
BLACKWATER 9780 .6 1.3 46 .9 .8 112
EVENING STAR 9200 .5 1.0 50 1.0 .8 125
KIRWIN 9550 .6 .8 75 .5 .6 83
MARQUETTE 8760 .5 .8 62 .8 .7 114
SYLVAN LAKE 8420 .3 .6 50 1.2 .8 150
SYLVAN ROAD 7120 .3 .0 .9 .5 180
YOUNTS PEAK 8350 .5 .5 100 .8 .6 133
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Basin wide percent of average 60 127
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .5 .2 250 1.2 .6 200
BIG GOOSE 7990 .1 .2 50 .7 .8 87
BONE SPRINGS DIV 9350 .8 1.1 73 1.3 .9 144
BURGESS JUNCTION 7880 .6 .6 100 1.2 .8 150
CLOUD PEAK RESERVOIR 9860 .6 .4 150 .7 .9 78
DOME LAKE 8880 .2 .7 29 .8 .8 100
GRAVE SPRINGS 8550 .4 .4 100 1.0 .8 125
HANSEN SAWMILL 8360 .6 .2 300 .4 .6 67
MIDDLE POWDER 7760 .7 .5 140 1.3 .8 162
POWDER RIVER PASS 9480 .5 .4 125 1.3 .7 186
SUCKER CREEK 8880 .6 .5 120 1.2 .8 150
TIE CREEK 6870 .2 .0 1.1 .9 122
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Basin wide percent of average 108 130
BELLE FOURCHE
BLIND PARK 6890 .7 .1 700 .8 .8 100
COLE CANYON 5910 .8 .2 400 1.4 .6 233
NORTH RAPID CREEK 6130 .4 .1 400 1.1 .8 138
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Basin wide percent of average 475 150
UPPER N. PLATTE RIVER
COLUMBINE 9160 .1 .0 .2 .6 33
DIVIDE PEAK 8880 .0 .5 0 1.3 .8 162
ELK RIVER 8700 .1 .1 100 .8 .6 133
JOE WRIGHT 10120 .0 .5 0 .4 1.1 36
NORTH FRENCH CREEK 10130 .2 1.0 20 .4 .9 44
OLD BATTLE 10000 .2 .8 25 1.0 1.0 100
SAGE CREEK BASIN 7850 .0 .1 0 .5 .5 100
SOUTH BRUSH CREEK 8440 .0 .1 0 .2 .8 25
TOWER 10500 .0 .7 0 .8 1.0 80
WEBBER SPRINGS 9250 .0 .4 0 .7 .9 78
WILLOW CREEK PASS 9540 .0 .2 0 .4 .6 67
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Basin wide percent of average 11 76
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .1 .7 14 .0 .7 0
CASPER MTN. 7900 .1 .4 25 .9 .7 129
DEADMAN HILL 10220 .0 .7 0 .1 .8 12
DEER PARK 9700 .4 .7 57 1.4 .7 200
LAPRELE CREEK 8375 .0 .2 0 .1 .5 20
RENO HILL 8400 .3 .5 60 .3 .7 43
ROACH 9700 .1 .2 50 .2 .7 29
SAND LAKE 10050 .3 1.0 30 .0 .9 0
SOUTH PASS 9040 .5 .4 125 1.6 .6 267
WINDY PEAK 7900 .2 .1 200 .0 .5 0
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Basin wide percent of average 41 68
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 .5 .5 100
DIVIDE PEAK 8880 .0 .5 0 1.3 .8 162
OLD BATTLE 10000 .2 .8 25 1.0 1.0 100
SANDSTONE RS 8150 .0 .0 100 .4 .6 67
WHISKEY PARK 8950 .0 .4 0 .8 .9 89
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Basin wide percent of average 12 105
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .3 .3 100 .9 .6 150
BLIND BULL SUM 8650 .2 .2 100 .8 .6 133
EAST RIM DIVIDE 7930 .0 .0 100 .6 .4 150
ELKHART PARK G.S. 9400 .1 .1 100 .9 .6 150
GROS VENTRE SUMMIT 8750 .4 .4 100 .8 .6 133
GUNSIGHT PASS 9820 .1 -M * .4 -M *
KENDALL R.S. 7740 .1 .0 .5 .5 100
LOOMIS PARK 8240 .1 .1 100 .9 .6 150
NEW FORK LAKE 8340 .0 .0 100 .5 .5 100
SNIDER BASIN 8060 .2 .1 200 .3 .4 75
SPRING CREEK DIVIDE 9000 .1 .1 100 .5 .7 71
TRIPLE PEAK 8500 .2 .1 200 .4 .7 57
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Basin wide percent of average 114 115
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100 .4 .4 100
HEWINTA 9519 .0 .3 0 .4 .7 57
HICKERSON PARK 9145 .0 .0 100 .6 .5 120
HOLE-IN-ROCK 9150 .1 .0 .7 .5 140
INDIAN CREEK 9425 .0 .3 0 .4 .7 57
KELLEY R.S. 8180 .1 .1 100 .6 .6 100
STEEL CREEK PARK 10200 .0 .6 0 .6 .7 86
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Basin wide percent of average 8 90
UPPER BEAR RIVER
BUG LAKE 7950 .1 .4 25 .8 .7 114
HAYDEN FORK 9212 .0 .3 0 .9 .7 129
KELLEY R.S. 8180 .1 .1 100 .6 .6 100
LILY LAKE 9156 .1 .3 33 1.0 .7 143
MONTE CRISTO 8960 .0 .5 0 1.1 .9 122
SALT RIVER SUMMIT 7760 .0 .0 100 .4 .6 67
TRIAL LAKE 9992 .1 .6 17 1.0 .8 125
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Basin wide percent of average 18 116
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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.