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 16 , 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 .1 0 1.5 .9 167
COTTONWOOD CREEK 7670 .2 .1 200 1.3 1.3 100
GRAND TARGHEE 9260 1.0 -M * 2.9 -M *
GRANITE CREEK 6770 .5 .1 500 1.5 .8 188
GRASSY LAKE 7265 .9 .3 300 2.1 1.5 140
GROS VENTRE SUMMIT 8750 1.4 .6 233 1.8 .9 200
GUNSIGHT PASS 9820 .7 -M * 1.0 -M *
LEWIS LAKE DIVIDE 7850 .6 .1 600 2.2 1.3 169
PHILLIPS BENCH 8200 .8 .3 267 1.4 1.0 140
SALT RIVER SUMMIT 7760 .0 .0 100 1.0 .9 111
SNAKE RIVER STATION 6920 .1 .0 1.3 1.1 118
SPRING CREEK DIVIDE 9000 .7 .4 175 1.1 1.0 110
THUMB DIVIDE 7980 .6 .2 300 2.2 1.0 220
TOGWOTEE PASS 9580 1.4 1.1 127 1.9 1.3 146
TWO OCEAN PLATEAU 9240 1.3 1.3 100 1.5 1.4 107
WILLOW CREEK 8380 .5 .5 100 1.9 1.7 112
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Basin wide percent of average 175 141
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 1.2 1.4 86 1.3 .9 144
BLACK BEAR 8170 1.1 .9 122 3.2 1.4 229
CANYON 7870 .0 .2 0 .7 .8 87
FISHER CREEK 9100 1.0 1.0 100 1.8 1.4 129
MADISON PLATEAU 7750 .7 .5 140 1.7 1.2 142
NORTHEAST ENTRANCE 7350 .0 .1 0 1.0 .8 125
PARKER PEAK 9400 1.5 1.4 107 1.4 1.2 117
SYLVAN LAKE 8420 .0 .9 0 1.5 1.2 125
THUMB DIVIDE 7980 .6 .2 300 2.2 1.0 220
TWO OCEAN PLATEAU 9240 1.3 1.3 100 1.5 1.4 107
WHISKEY CREEK 6800 .5 .1 500 1.3 .9 144
WHITE MILL 8700 1.0 .8 125 1.3 1.2 108
WOLVERINE 7650 .8 .1 800 1.1 .9 122
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Basin wide percent of average 109 140
WIND RIVER
BURROUGHS CREEK 8750 1.7 .3 567 2.0 .8 250
COLD SPRINGS 9630 1.7 .3 567 2.1 .9 233
DEER PARK 9700 1.3 .8 162 2.4 1.0 240
HOBBS PARK 10100 2.2 .8 275 2.4 1.0 240
LITTLE WARM 9370 1.3 .5 260 1.6 .8 200
SOUTH PASS 9040 1.5 .4 375 2.8 .9 311
ST. LAWRENCE ALT 8620 1.9 .2 950 2.3 .8 287
TOGWOTEE PASS 9580 1.4 1.1 127 1.9 1.3 146
TOWNSEND CREEK 8700 2.0 .3 667 2.7 1.1 245
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Basin wide percent of average 319 235
BIGHORN BASIN
BALD MTN. 9380 1.8 1.6 112 2.3 1.2 192
BEAR TRAP MEADOW 8200 .9 .2 450 1.7 .9 189
BLACKWATER 9780 1.4 1.7 82 1.7 1.3 131
BONE SPRINGS DIV 9350 1.4 1.3 108 1.8 1.3 138
EVENING STAR 9200 1.3 1.3 100 1.9 1.3 146
GRAVE SPRINGS 8550 1.1 .2 550 1.7 1.2 142
KIRWIN 9550 1.4 .9 156 1.4 .8 175
MARQUETTE 8760 1.8 1.0 180 1.9 1.1 173
MIDDLE POWDER 7760 1.2 .6 200 1.8 1.3 138
OWL CREEK 8975 1.8 .4 450 1.7 .6 283
POWDER RIVER PASS 9480 .9 .5 180 1.7 1.0 170
SHELL CREEK 9580 1.9 1.6 119 2.4 1.0 240
SYLVAN LAKE 8420 .0 .9 0 1.5 1.2 125
SYLVAN ROAD 7120 .0 .1 0 1.1 .8 138
TIMBER CREEK 7950 1.5 .3 500 2.1 .8 262
YOUNTS PEAK 8350 1.0 .6 167 1.3 .9 144
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Basin wide percent of average 147 168
SHOSHONE RIVER
BLACKWATER 9780 1.4 1.7 82 1.7 1.3 131
EVENING STAR 9200 1.3 1.3 100 1.9 1.3 146
KIRWIN 9550 1.4 .9 156 1.4 .8 175
MARQUETTE 8760 1.8 1.0 180 1.9 1.1 173
SYLVAN LAKE 8420 .0 .9 0 1.5 1.2 125
SYLVAN ROAD 7120 .0 .1 0 1.1 .8 138
YOUNTS PEAK 8350 1.0 .6 167 1.3 .9 144
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Basin wide percent of average 106 146
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .9 .2 450 1.7 .9 189
BIG GOOSE 7990 .9 .4 225 1.6 1.1 145
BONE SPRINGS DIV 9350 1.4 1.3 108 1.8 1.3 138
BURGESS JUNCTION 7880 1.0 .7 143 1.8 1.1 164
CLOUD PEAK RESERVOIR 9860 1.3 .6 217 1.7 1.4 121
DOME LAKE 8880 .9 .8 112 1.6 1.3 123
GRAVE SPRINGS 8550 1.1 .2 550 1.7 1.2 142
HANSEN SAWMILL 8360 1.0 .3 333 1.3 .9 144
MIDDLE POWDER 7760 1.2 .6 200 1.8 1.3 138
POWDER RIVER PASS 9480 .9 .5 180 1.7 1.0 170
SUCKER CREEK 8880 1.2 .6 200 2.1 1.2 175
TIE CREEK 6870 1.8 .1 1800 2.8 1.4 200
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Basin wide percent of average 216 153
BELLE FOURCHE
BLIND PARK 6890 .7 .0 1.1 1.2 92
COLE CANYON 5910 1.3 .4 325 2.5 .9 278
NORTH RAPID CREEK 6130 .0 .2 0 1.5 1.2 125
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Basin wide percent of average 217 155
UPPER N. PLATTE RIVER
COLUMBINE 9160 .0 .0 100 .2 1.0 20
DIVIDE PEAK 8880 .4 .8 50 1.9 1.3 146
ELK RIVER 8700 .1 .2 50 1.0 1.0 100
JOE WRIGHT 10120 .4 .9 44 .8 1.6 50
NORTH FRENCH CREEK 10130 .7 1.5 47 1.2 1.4 86
OLD BATTLE 10000 .2 1.2 17 1.4 1.5 93
SAGE CREEK BASIN 7850 .0 .4 0 .8 .7 114
SOUTH BRUSH CREEK 8440 .0 .2 0 .7 1.2 58
TOWER 10500 .1 1.1 9 1.4 1.6 87
WEBBER SPRINGS 9250 .1 .6 17 .9 1.4 64
WILLOW CREEK PASS 9540 .8 .4 200 .6 .9 67
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Basin wide percent of average 38 80
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .5 .9 56 .5 1.1 45
CASPER MTN. 7900 .6 .7 86 1.6 1.2 133
DEADMAN HILL 10220 1.9 1.0 190 .6 1.2 50
DEER PARK 9700 1.3 .8 162 2.4 1.0 240
LAPRELE CREEK 8375 .1 .3 33 .6 .8 75
RENO HILL 8400 1.1 .8 138 1.2 1.1 109
ROACH 9700 .6 .3 200 .7 1.1 64
SAND LAKE 10050 1.0 1.4 71 .8 1.4 57
SOUTH PASS 9040 1.5 .4 375 2.8 .9 311
WINDY PEAK 7900 .6 .1 600 .4 .8 50
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Basin wide percent of average 137 109
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 .6 .8 75
DIVIDE PEAK 8880 .4 .8 50 1.9 1.3 146
OLD BATTLE 10000 .2 1.2 17 1.4 1.5 93
SANDSTONE RS 8150 .0 .1 0 .6 1.0 60
WHISKEY PARK 8950 .1 .6 17 1.0 1.4 71
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Basin wide percent of average 26 92
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .7 .4 175 1.3 .8 162
BLIND BULL SUM 8650 1.5 .5 300 2.0 .9 222
EAST RIM DIVIDE 7930 .8 .1 800 1.8 .6 300
ELKHART PARK G.S. 9400 .8 .3 267 1.7 .9 189
GROS VENTRE SUMMIT 8750 1.4 .6 233 1.8 .9 200
GUNSIGHT PASS 9820 .7 -M * 1.0 -M *
KENDALL R.S. 7740 .8 .0 1.4 .7 200
LOOMIS PARK 8240 1.0 .3 333 2.0 .8 250
NEW FORK LAKE 8340 .5 .0 1.3 .7 186
SNIDER BASIN 8060 .8 .2 400 1.1 .6 183
SPRING CREEK DIVIDE 9000 .7 .4 175 1.1 1.0 110
TRIPLE PEAK 8500 1.2 .3 400 1.7 1.0 170
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Basin wide percent of average 287 193
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100 1.2 .6 200
HEWINTA 9519 .0 .4 0 1.2 1.1 109
HICKERSON PARK 9145 .0 .0 100 1.2 .8 150
HOLE-IN-ROCK 9150 .5 .0 1.7 .8 212
INDIAN CREEK 9425 1.4 .5 280 1.6 1.1 145
KELLEY R.S. 8180 .6 .2 300 1.3 .9 144
STEEL CREEK PARK 10200 .5 .8 62 1.6 1.1 145
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Basin wide percent of average 132 153
UPPER BEAR RIVER
BUG LAKE 7950 .4 .5 80 1.3 1.1 118
HAYDEN FORK 9212 .1 .4 25 1.3 1.1 118
KELLEY R.S. 8180 .6 .2 300 1.3 .9 144
LILY LAKE 9156 .0 .5 0 1.7 1.1 155
MONTE CRISTO 8960 .4 .7 57 1.7 1.3 131
SALT RIVER SUMMIT 7760 .0 .0 100 1.0 .9 111
TRIAL LAKE 9992 .2 .9 22 1.3 1.3 100
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Basin wide percent of average 53 125
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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.