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 SUNDAY: OCTOBER 12 , 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 .3 .0 1.4 .7 200
COTTONWOOD CREEK 7670 .2 .0 1.1 .9 122
GRAND TARGHEE 9260 .4 -M * 2.0 -M *
GRANITE CREEK 6770 .4 .0 1.1 .6 183
GRASSY LAKE 7265 .7 .1 700 1.5 1.1 136
GROS VENTRE SUMMIT 8750 1.1 .4 275 1.5 .7 214
GUNSIGHT PASS 9820 .2 -M * .6 -M *
LEWIS LAKE DIVIDE 7850 .1 .0 1.5 .9 167
PHILLIPS BENCH 8200 .4 .1 400 1.0 .7 143
SALT RIVER SUMMIT 7760 .0 .0 100 .8 .6 133
SNAKE RIVER STATION 6920 .3 .0 1.0 .8 125
SPRING CREEK DIVIDE 9000 .5 .2 250 .9 .7 129
THUMB DIVIDE 7980 .3 .1 300 1.5 .7 214
TOGWOTEE PASS 9580 .7 .8 87 1.3 .9 144
TWO OCEAN PLATEAU 9240 .9 .9 100 1.0 1.0 100
WILLOW CREEK 8380 .6 .3 200 1.5 1.3 115
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Basin wide percent of average 179 147
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .6 1.1 55 .6 .7 86
BLACK BEAR 8170 .9 .6 150 2.8 1.0 280
CANYON 7870 .4 .2 200 .3 .6 50
FISHER CREEK 9100 .6 .8 75 1.1 1.0 110
MADISON PLATEAU 7750 .5 .4 125 1.4 .9 156
NORTHEAST ENTRANCE 7350 .4 .0 .7 .6 117
PARKER PEAK 9400 1.1 1.0 110 1.1 .9 122
SYLVAN LAKE 8420 .3 .6 50 1.2 .9 133
THUMB DIVIDE 7980 .3 .1 300 1.5 .7 214
TWO OCEAN PLATEAU 9240 .9 .9 100 1.0 1.0 100
WHISKEY CREEK 6800 .2 .1 200 1.0 .7 143
WHITE MILL 8700 .6 .6 100 .8 .9 89
WOLVERINE 7650 1.2 .1 1200 .7 .7 100
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Basin wide percent of average 117 134
WIND RIVER
BURROUGHS CREEK 8750 1.4 .2 700 1.7 .6 283
COLD SPRINGS 9630 1.4 .2 700 1.9 .6 317
DEER PARK 9700 1.1 .8 138 2.1 .7 300
HOBBS PARK 10100 2.0 .7 286 2.1 .7 300
LITTLE WARM 9370 1.0 .3 333 1.2 .6 200
SOUTH PASS 9040 1.2 .4 300 2.5 .6 417
ST. LAWRENCE ALT 8620 1.9 .1 1900 2.1 .6 350
TOGWOTEE PASS 9580 .7 .8 87 1.3 .9 144
TOWNSEND CREEK 8700 1.7 .3 567 2.1 .8 262
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Basin wide percent of average 326 279
BIGHORN BASIN
BALD MTN. 9380 1.5 1.4 107 1.6 .9 178
BEAR TRAP MEADOW 8200 .7 .2 350 1.4 .6 233
BLACKWATER 9780 .8 1.3 62 1.2 .9 133
BONE SPRINGS DIV 9350 1.2 1.1 109 1.4 1.0 140
EVENING STAR 9200 .9 1.0 90 1.3 .9 144
GRAVE SPRINGS 8550 .9 .4 225 1.6 .9 178
KIRWIN 9550 1.1 .8 138 1.1 .6 183
MARQUETTE 8760 1.6 .8 200 1.5 .8 188
MIDDLE POWDER 7760 1.1 .5 220 1.7 .9 189
OWL CREEK 8975 1.5 .4 375 1.4 .4 350
POWDER RIVER PASS 9480 .7 .4 175 1.5 .7 214
SHELL CREEK 9580 1.7 1.5 113 2.2 .8 275
SYLVAN LAKE 8420 .3 .6 50 1.2 .9 133
SYLVAN ROAD 7120 .4 .0 .9 .6 150
TIMBER CREEK 7950 1.4 .1 1400 2.1 .6 350
YOUNTS PEAK 8350 .7 .5 140 .9 .7 129
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Basin wide percent of average 146 189
SHOSHONE RIVER
BLACKWATER 9780 .8 1.3 62 1.2 .9 133
EVENING STAR 9200 .9 1.0 90 1.3 .9 144
KIRWIN 9550 1.1 .8 138 1.1 .6 183
MARQUETTE 8760 1.6 .8 200 1.5 .8 188
SYLVAN LAKE 8420 .3 .6 50 1.2 .9 133
SYLVAN ROAD 7120 .4 .0 .9 .6 150
YOUNTS PEAK 8350 .7 .5 140 .9 .7 129
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Basin wide percent of average 108 150
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .7 .2 350 1.4 .6 233
BIG GOOSE 7990 .6 .3 200 1.2 .8 150
BONE SPRINGS DIV 9350 1.2 1.1 109 1.4 1.0 140
BURGESS JUNCTION 7880 1.0 .6 167 1.6 .8 200
CLOUD PEAK RESERVOIR 9860 1.1 .3 367 1.1 1.0 110
DOME LAKE 8880 .7 .7 100 1.3 .9 144
GRAVE SPRINGS 8550 .9 .4 225 1.6 .9 178
HANSEN SAWMILL 8360 .9 .2 450 .8 .7 114
MIDDLE POWDER 7760 1.1 .5 220 1.7 .9 189
POWDER RIVER PASS 9480 .7 .4 175 1.5 .7 214
SUCKER CREEK 8880 1.1 .5 220 1.6 .9 178
TIE CREEK 6870 -M .0 * -M 1.0 *
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Basin wide percent of average 192 165
BELLE FOURCHE
BLIND PARK 6890 .6 .0 .8 .9 89
COLE CANYON 5910 1.2 .2 600 2.0 .7 286
NORTH RAPID CREEK 6130 .4 .1 400 1.3 .9 144
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Basin wide percent of average 533 164
UPPER N. PLATTE RIVER
COLUMBINE 9160 .2 .0 .3 .7 43
DIVIDE PEAK 8880 .1 .6 17 1.7 .9 189
ELK RIVER 8700 .1 .1 100 1.0 .7 143
JOE WRIGHT 10120 .1 .6 17 .6 1.2 50
NORTH FRENCH CREEK 10130 .7 1.1 64 1.1 1.0 110
OLD BATTLE 10000 .2 .9 22 1.3 1.1 118
SAGE CREEK BASIN 7850 .1 .2 50 .7 .5 140
SOUTH BRUSH CREEK 8440 .1 .1 100 .7 .9 78
TOWER 10500 .4 .7 57 1.1 1.1 100
WEBBER SPRINGS 9250 .0 .4 0 .9 1.0 90
WILLOW CREEK PASS 9540 .0 .2 0 .5 .7 71
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Basin wide percent of average 37 101
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .4 .7 57 .1 .8 12
CASPER MTN. 7900 .6 .5 120 1.3 .8 162
DEADMAN HILL 10220 .0 .7 0 .3 .9 33
DEER PARK 9700 1.1 .8 138 2.1 .7 300
LAPRELE CREEK 8375 .0 .2 0 .3 .6 50
RENO HILL 8400 .9 .6 150 .9 .8 112
ROACH 9700 .3 .2 150 .4 .8 50
SAND LAKE 10050 .8 1.1 73 .5 1.0 50
SOUTH PASS 9040 1.2 .4 300 2.5 .6 417
WINDY PEAK 7900 .3 .1 300 .0 .6 0
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Basin wide percent of average 106 111
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 .6 .6 100
DIVIDE PEAK 8880 .1 .6 17 1.7 .9 189
OLD BATTLE 10000 .2 .9 22 1.3 1.1 118
SANDSTONE RS 8150 .0 .0 100 .6 .7 86
WHISKEY PARK 8950 .1 .4 25 1.0 1.0 100
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Basin wide percent of average 21 121
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .4 .3 133 1.0 .6 167
BLIND BULL SUM 8650 1.0 .3 333 1.7 .7 243
EAST RIM DIVIDE 7930 .6 .0 1.3 .5 260
ELKHART PARK G.S. 9400 .2 .1 200 1.1 .7 157
GROS VENTRE SUMMIT 8750 1.1 .4 275 1.5 .7 214
GUNSIGHT PASS 9820 .2 -M * .6 -M *
KENDALL R.S. 7740 .7 .0 1.1 .5 220
LOOMIS PARK 8240 .8 .2 400 1.6 .6 267
NEW FORK LAKE 8340 .3 .0 .7 .5 140
SNIDER BASIN 8060 .9 .1 900 .9 .5 180
SPRING CREEK DIVIDE 9000 .5 .2 250 .9 .7 129
TRIPLE PEAK 8500 1.2 .1 1200 1.4 .7 200
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Basin wide percent of average 359 197
LOWER GREEN RIVER
HAMS FORK 7840 .5 .0 1.0 .5 200
HEWINTA 9519 .2 .3 67 .6 .8 75
HICKERSON PARK 9145 .0 .0 100 .8 .6 133
HOLE-IN-ROCK 9150 .3 .0 1.1 .6 183
INDIAN CREEK 9425 .9 .3 300 1.2 .8 150
KELLEY R.S. 8180 .5 .1 500 1.0 .7 143
STEEL CREEK PARK 10200 .5 .6 83 1.0 .8 125
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Basin wide percent of average 162 140
UPPER BEAR RIVER
BUG LAKE 7950 .3 .4 75 1.2 .8 150
HAYDEN FORK 9212 .1 .3 33 1.1 .8 138
KELLEY R.S. 8180 .5 .1 500 1.0 .7 143
LILY LAKE 9156 .5 .4 125 1.5 .8 188
MONTE CRISTO 8960 .3 .6 50 1.3 1.0 130
SALT RIVER SUMMIT 7760 .0 .0 100 .8 .6 133
TRIAL LAKE 9992 .2 .7 29 1.2 .9 133
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Basin wide percent of average 76 145
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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.