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 FRIDAY: OCTOBER 17 , 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 1.6 1.0 160
COTTONWOOD CREEK 7670 .0 .2 0 1.4 1.4 100
GRAND TARGHEE 9260 1.0 -M * 3.1 -M *
GRANITE CREEK 6770 .4 .1 400 1.6 .8 200
GRASSY LAKE 7265 .7 .4 175 2.0 1.6 125
GROS VENTRE SUMMIT 8750 1.3 .7 186 1.8 1.0 180
GUNSIGHT PASS 9820 .7 -M * 1.1 -M *
LEWIS LAKE DIVIDE 7850 .5 .2 250 2.1 1.4 150
PHILLIPS BENCH 8200 .9 .3 300 1.6 1.1 145
SALT RIVER SUMMIT 7760 .0 .0 100 1.1 .9 122
SNAKE RIVER STATION 6920 .0 .0 100 1.3 1.1 118
SPRING CREEK DIVIDE 9000 .8 .4 200 1.2 1.1 109
THUMB DIVIDE 7980 .6 .2 300 2.2 1.1 200
TOGWOTEE PASS 9580 1.4 1.2 117 1.9 1.4 136
TWO OCEAN PLATEAU 9240 1.2 1.4 86 1.5 1.5 100
WILLOW CREEK 8380 .4 .6 67 2.0 1.8 111
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Basin wide percent of average 141 135
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 1.3 1.5 87 1.3 1.0 130
BLACK BEAR 8170 1.1 .9 122 3.2 1.5 213
CANYON 7870 .0 .3 0 .7 .8 87
FISHER CREEK 9100 1.1 1.1 100 1.9 1.5 127
MADISON PLATEAU 7750 .8 .5 160 1.8 1.3 138
NORTHEAST ENTRANCE 7350 .0 .1 0 1.0 .8 125
PARKER PEAK 9400 1.5 1.5 100 1.5 1.3 115
SYLVAN LAKE 8420 .0 1.0 0 1.6 1.3 123
THUMB DIVIDE 7980 .6 .2 300 2.2 1.1 200
TWO OCEAN PLATEAU 9240 1.2 1.4 86 1.5 1.5 100
WHISKEY CREEK 6800 .5 .1 500 1.3 1.0 130
WHITE MILL 8700 1.1 .8 138 1.4 1.3 108
WOLVERINE 7650 .6 .2 300 1.1 1.0 110
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Basin wide percent of average 102 133
WIND RIVER
BURROUGHS CREEK 8750 1.7 .3 567 2.0 .8 250
COLD SPRINGS 9630 1.7 .4 425 2.2 .9 244
DEER PARK 9700 1.3 1.1 118 2.4 1.1 218
HOBBS PARK 10100 2.1 1.1 191 2.4 1.1 218
LITTLE WARM 9370 1.3 .5 260 1.7 .9 189
SOUTH PASS 9040 1.5 .6 250 2.9 1.0 290
ST. LAWRENCE ALT 8620 1.8 .3 600 2.2 .9 244
TOGWOTEE PASS 9580 1.4 1.2 117 1.9 1.4 136
TOWNSEND CREEK 8700 1.9 .5 380 2.7 1.1 245
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Basin wide percent of average 245 222
BIGHORN BASIN
BALD MTN. 9380 1.8 1.7 106 2.4 1.3 185
BEAR TRAP MEADOW 8200 .8 .3 267 1.7 .9 189
BLACKWATER 9780 1.4 1.8 78 1.7 1.4 121
BONE SPRINGS DIV 9350 1.5 1.5 100 1.8 1.4 129
EVENING STAR 9200 1.4 1.4 100 2.1 1.4 150
GRAVE SPRINGS 8550 1.1 .4 275 1.7 1.2 142
KIRWIN 9550 1.4 1.0 140 1.5 .9 167
MARQUETTE 8760 1.7 1.2 142 1.9 1.2 158
MIDDLE POWDER 7760 1.1 .8 138 1.8 1.4 129
OWL CREEK 8975 1.8 .5 360 1.7 .6 283
POWDER RIVER PASS 9480 .9 .6 150 1.7 1.1 155
SHELL CREEK 9580 2.0 1.7 118 2.4 1.1 218
SYLVAN LAKE 8420 .0 1.0 0 1.6 1.3 123
SYLVAN ROAD 7120 .0 .2 0 1.1 .9 122
TIMBER CREEK 7950 1.4 .6 233 2.1 .8 262
YOUNTS PEAK 8350 1.0 .6 167 1.3 1.0 130
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Basin wide percent of average 126 159
SHOSHONE RIVER
BLACKWATER 9780 1.4 1.8 78 1.7 1.4 121
EVENING STAR 9200 1.4 1.4 100 2.1 1.4 150
KIRWIN 9550 1.4 1.0 140 1.5 .9 167
MARQUETTE 8760 1.7 1.2 142 1.9 1.2 158
SYLVAN LAKE 8420 .0 1.0 0 1.6 1.3 123
SYLVAN ROAD 7120 .0 .2 0 1.1 .9 122
YOUNTS PEAK 8350 1.0 .6 167 1.3 1.0 130
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Basin wide percent of average 96 138
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .8 .3 267 1.7 .9 189
BIG GOOSE 7990 .8 .4 200 1.7 1.2 142
BONE SPRINGS DIV 9350 1.5 1.5 100 1.8 1.4 129
BURGESS JUNCTION 7880 1.0 .8 125 1.8 1.2 150
CLOUD PEAK RESERVOIR 9860 1.4 .7 200 1.8 1.4 129
DOME LAKE 8880 .9 1.0 90 1.5 1.4 107
GRAVE SPRINGS 8550 1.1 .4 275 1.7 1.2 142
HANSEN SAWMILL 8360 1.0 .4 250 1.3 1.0 130
MIDDLE POWDER 7760 1.1 .8 138 1.8 1.4 129
POWDER RIVER PASS 9480 .9 .6 150 1.7 1.1 155
SUCKER CREEK 8880 1.2 .7 171 2.1 1.3 162
TIE CREEK 6870 1.6 .3 533 2.9 1.5 193
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Basin wide percent of average 168 145
BELLE FOURCHE
BLIND PARK 6890 .0 .1 0 1.1 1.3 85
COLE CANYON 5910 1.1 .4 275 2.5 1.0 250
NORTH RAPID CREEK 6130 .0 .2 0 1.6 1.4 114
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Basin wide percent of average 157 141
UPPER N. PLATTE RIVER
COLUMBINE 9160 .1 .1 100 .3 1.1 27
DIVIDE PEAK 8880 .3 .8 37 1.9 1.4 136
ELK RIVER 8700 .2 .2 100 1.1 1.1 100
JOE WRIGHT 10120 .0 1.0 0 .9 1.7 53
NORTH FRENCH CREEK 10130 .7 1.5 47 1.2 1.5 80
OLD BATTLE 10000 .2 1.3 15 1.4 1.7 82
SAGE CREEK BASIN 7850 .0 .4 0 .8 .8 100
SOUTH BRUSH CREEK 8440 .0 .2 0 .8 1.3 62
TOWER 10500 .0 1.2 0 1.5 1.7 88
WEBBER SPRINGS 9250 .1 .6 17 .9 1.5 60
WILLOW CREEK PASS 9540 .2 .4 50 .6 1.0 60
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Basin wide percent of average 23 77
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .4 1.0 40 .5 1.2 42
CASPER MTN. 7900 .5 .7 71 1.6 1.2 133
DEADMAN HILL 10220 1.4 1.1 127 .6 1.3 46
DEER PARK 9700 1.3 1.1 118 2.4 1.1 218
LAPRELE CREEK 8375 .1 .3 33 .5 .9 56
RENO HILL 8400 1.0 .8 125 1.2 1.2 100
ROACH 9700 .6 .3 200 .7 1.2 58
SAND LAKE 10050 .9 1.5 60 .8 1.5 53
SOUTH PASS 9040 1.5 .6 250 2.9 1.0 290
WINDY PEAK 7900 .6 .1 600 .5 .9 56
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Basin wide percent of average 111 102
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100 .6 .9 67
DIVIDE PEAK 8880 .3 .8 37 1.9 1.4 136
OLD BATTLE 10000 .2 1.3 15 1.4 1.7 82
SANDSTONE RS 8150 .0 .1 0 .6 1.1 55
WHISKEY PARK 8950 .1 .6 17 1.0 1.5 67
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Basin wide percent of average 21 83
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .8 .5 160 1.3 .9 144
BLIND BULL SUM 8650 1.5 .5 300 2.0 1.0 200
EAST RIM DIVIDE 7930 .7 .1 700 1.8 .7 257
ELKHART PARK G.S. 9400 .9 .3 300 1.7 1.0 170
GROS VENTRE SUMMIT 8750 1.3 .7 186 1.8 1.0 180
GUNSIGHT PASS 9820 .7 -M * 1.1 -M *
KENDALL R.S. 7740 .6 .0 1.4 .8 175
LOOMIS PARK 8240 1.0 .3 333 2.0 .9 222
NEW FORK LAKE 8340 .5 .1 500 1.3 .8 162
SNIDER BASIN 8060 .8 .2 400 1.1 .7 157
SPRING CREEK DIVIDE 9000 .8 .4 200 1.2 1.1 109
TRIPLE PEAK 8500 1.2 .3 400 1.8 1.1 164
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Basin wide percent of average 279 174
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100 1.2 .7 171
HEWINTA 9519 .0 .4 0 1.2 1.2 100
HICKERSON PARK 9145 .0 .1 0 1.2 .9 133
HOLE-IN-ROCK 9150 .5 .1 500 1.7 .9 189
INDIAN CREEK 9425 1.5 .5 300 1.7 1.2 142
KELLEY R.S. 8180 .6 .3 200 1.4 1.0 140
STEEL CREEK PARK 10200 .7 .8 87 1.6 1.2 133
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Basin wide percent of average 150 141
UPPER BEAR RIVER
BUG LAKE 7950 .3 .6 50 1.3 1.2 108
HAYDEN FORK 9212 .0 .4 0 1.3 1.2 108
KELLEY R.S. 8180 .6 .3 200 1.4 1.0 140
LILY LAKE 9156 .0 .5 0 1.7 1.2 142
MONTE CRISTO 8960 .0 .8 0 1.7 1.4 121
SALT RIVER SUMMIT 7760 .0 .0 100 1.1 .9 122
TRIAL LAKE 9992 .2 .9 22 1.3 1.4 93
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Basin wide percent of average 31 118
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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.