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 WEDNESDAY: OCTOBER 17 , 2007
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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 .2 100* 1.7 1.1 155
COTTONWOOD CREEK 7600 .1 .2 50* 2.0 1.6 125
GRANITE CREEK 6770 .1 .2 50* 1.4 .9 156
GRASSY LAKE 7265 .1 .4 25* 1.7 1.8 94
GROS VENTRE SUMMIT 8750 .7 .7 100* 1.8 1.0 180
LEWIS LAKE DIVIDE 7850 .0 .2 0* 1.1 1.7 65
PHILLIPS BENCH 8200 .0 .4 0* 1.4 1.3 108
SALT RIVER SUMMIT 7600 .3 .0 * 1.4 1.0 140
SNAKE RIVER STATION 6920 .1 .1 100* 1.7 1.2 142
SPRING CREEK DIVIDE 9000 .1 .5 20* 1.2 1.4 86
THUMB DIVIDE 7980 .1 .2 50* 2.0 1.1 182
TOGWOTEE PASS 9580 1.7 1.2 142* 2.5 1.5 167
TWO OCEAN PLATEAU 9240 2.2 1.4 157* 2.9 1.7 171
WILLOW CREEK 8450 .2 .6 33* 2.1 2.0 105
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Basin wide percent of average 89* 129
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 2.1 1.5 140* 2.0 1.1 182
BLACK BEAR 8170 1.0 1.0 100* 2.4 1.9 126
CANYON 8090 .0 .3 0* 2.0 1.0 200
FISHER CREEK 9100 2.8 1.2 233* 3.2 1.8 178
MADISON PLATEAU 7750 .3 .6 50* 2.3 1.3 177
NORTHEAST ENTRANCE 7350 -M .1 * -M .8 *
PARKER PEAK 9400 1.8 1.4 129* 2.7 1.2 225
SYLVAN LAKE 8420 .2 1.0 20* 2.3 1.4 164
THUMB DIVIDE 7980 .1 .2 50* 2.0 1.1 182
TWO OCEAN PLATEAU 9240 2.2 1.4 157* 2.9 1.7 171
WHISKEY CREEK 6800 .3 .2 150* 2.4 1.2 200
WHITE MILL 8700 2.0 .9 222* 2.4 1.4 171
WOLVERINE 7650 .1 .1 100* 1.6 1.0 160
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Basin wide percent of average 132* 175
WIND RIVER
BURROUGHS CREEK 8750 .0 .4 0* 1.7 .9 189
COLD SPRINGS 9630 .0 .3 0* 1.7 1.0 170
DEER PARK 9700 .8 1.0 80* 2.4 1.3 185
HOBBS PARK 10100 .9 .9 100* 2.6 1.1 236
LITTLE WARM 9370 .0 .5 0* 1.5 .9 167
SOUTH PASS 9040 .0 .5 0* 1.6 1.1 145
ST. LAWRENCE ALT 8620 .0 .2 0* 1.1 .9 122
TOGWOTEE PASS 9580 1.7 1.2 142* 2.5 1.5 167
TOWNSEND CREEK 8700 .1 .4 25* 2.0 1.1 182
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Basin wide percent of average 65* 174
BIGHORN BASIN
BALD MTN. 9380 1.4 1.7 82* 2.2 1.3 169
BEAR TRAP MEADOW 8200 .0 .2 0* .9 .9 100
BLACKWATER 9780 2.0 1.7 118* 2.3 1.4 164
BONE SPRINGS DIV 9350 .0 1.5 0* 2.0 1.3 154
EVENING STAR 9200 1.7 1.4 121* 2.6 1.5 173
GRAVE SPRINGS 8550 .0 .3 0* 1.2 1.1 109
KIRWIN 9550 1.9 .9 211* 2.8 1.0 280
MARQUETTE 8760 .0 1.0 0* 1.6 1.2 133
MIDDLE POWDER 7760 .0 .7 0* .9 1.4 64
OWL CREEK 8975 .0 .4 0* 1.6 .6 267
POWDER RIVER PASS 9480 .0 .6 0* 1.8 1.0 180
SHELL CREEK 9580 1.8 1.7 106 2.5 1.1 227
SYLVAN LAKE 8420 .2 1.0 20* 2.3 1.4 164
SYLVAN ROAD 7120 .0 .1 0* 2.0 1.1 182
TIMBER CREEK 7950 .1 .2 50* 2.0 .9 222
YOUNTS PEAK 8350 1.0 .7 143* 2.0 1.0 200
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Basin wide percent of average 72* 169
SHOSHONE RIVER
BLACKWATER 9780 2.0 1.7 118* 2.3 1.4 164
EVENING STAR 9200 1.7 1.4 121* 2.6 1.5 173
KIRWIN 9550 1.9 .9 211* 2.8 1.0 280
MARQUETTE 8760 .0 1.0 0* 1.6 1.2 133
SYLVAN LAKE 8420 .2 1.0 20* 2.3 1.4 164
SYLVAN ROAD 7120 .0 .1 0* 2.0 1.1 182
YOUNTS PEAK 8350 1.0 .7 143* 2.0 1.0 200
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Basin wide percent of average 100* 181
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .2 0* .9 .9 100
BIG GOOSE 7990 .0 .4 0* 1.8 1.1 164
BONE SPRINGS DIV 9350 .0 1.5 0* 2.0 1.3 154
BURGESS JUNCTION 7880 .0 .7 0* 1.2 1.2 100
CLOUD PEAK RESERVOIR 9860 .9 .5 180* 2.7 1.4 193
DOME LAKE 8880 .3 .8 37* 2.3 1.3 177
GRAVE SPRINGS 8550 .0 .3 0* 1.2 1.1 109
HANSEN SAWMILL 8360 .0 .3 0* 1.7 1.0 170
MIDDLE POWDER 7760 .0 .7 0* .9 1.4 64
POWDER RIVER PASS 9480 .0 .6 0* 1.8 1.0 180
SUCKER CREEK 8880 .1 .6 17* 1.3 1.3 100
TIE CREEK 6870 .0 .1 0* 1.2 1.3 92
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Basin wide percent of average 19* 133
BELLE FOURCHE
BLIND PARK 6890 .0 .1 0* .7 1.4 50
COLE CANYON 5910 .0 .1 0* .6 -M *
NORTH RAPID CREEK 6130 .0 .1 0* .7 1.3 54
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Basin wide percent of average 0* 52
UPPER N. PLATTE RIVER
COLUMBINE 9160 .0 .1 0* 2.0 1.3 154
DIVIDE PEAK 8860 -M .8 * -M 1.4 *
ELK RIVER 8700 .0 .2 0* 1.7 1.2 142
JOE WRIGHT 10120 1.2 1.0 120* 3.3 1.8 183
NORTH FRENCH CREEK 10130 .2 1.6 12* 1.7 1.8 94
OLD BATTLE 9920 .8 1.3 62* 2.4 1.9 126
SAGE CREEK BASIN 7850 .0 .4 0* 1.4 .8 175
SOUTH BRUSH CREEK 8440 .1 .3 33* 1.5 1.4 107
TOWER 10500 .2 1.3 15* 2.3 2.1 110
WEBBER SPRINGS 9250 .1 .7 14* 1.9 1.7 112
WILLOW CREEK PASS 9540 1.0 .4 250* 1.7 1.1 155
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Basin wide percent of average 49* 132
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 .1 1.1 9* 1.3 1.3 100
CASPER MTN. 7850 .1 .7 14* 1.5 1.3 115
DEADMAN HILL 10220 1.6 1.1 145* 2.1 1.3 162
DEER PARK 9700 .8 1.0 80* 2.4 1.3 185
LAPRELE CREEK 8375 .0 .4 0* .8 1.0 80
RENO HILL 8500 .1 .8 12* 1.3 1.3 100
ROACH 9700 1.0 .4 250* 2.1 1.2 175
SAND LAKE 10050 1.6 1.5 107* 2.3 1.7 135
SOUTH PASS 9040 .0 .5 0* 1.6 1.1 145
WINDY PEAK 7900 .3 .2 150* .9 .9 100
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Basin wide percent of average 73* 131
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .1 * .9 1.0 90
DIVIDE PEAK 8860 -M .8 * -M 1.4 *
OLD BATTLE 9920 .8 1.3 62* 2.4 1.9 126
SANDSTONE RS 8150 .0 .2 0* .9 1.2 75
WHISKEY PARK 8950 .0 .7 0* 1.6 1.5 107
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Basin wide percent of average 36* 104
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .3 .5 60* 1.4 1.0 140
BLIND BULL SUM 8900 .1 .6 17* 1.1 1.2 92
EAST RIM DIVIDE 7930 .0 .1 0* 1.1 .7 157
ELKHART PARK G.S. 9400 .0 .3 0* 1.3 1.0 130
GROS VENTRE SUMMIT 8750 .7 .7 100* 1.8 1.0 180
KENDALL R.S. 7740 .1 .1 100* 1.1 .8 138
LOOMIS PARK 8240 .0 .3 0* 1.1 1.0 110
NEW FORK LAKE 8340 .0 .1 0* 1.2 .8 150
SNIDER BASIN 8060 .1 .2 50* .7 .9 78
SPRING CREEK DIVIDE 9000 .1 .5 20* 1.2 1.4 86
TRIPLE PEAK 8500 .2 .3 67* 1.1 1.2 92
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Basin wide percent of average 43* 119
LOWER GREEN RIVER
HAMS FORK 7840 .0 .1 0* .9 .8 112
HEWINTA 9500 .0 .5 0* 3.5 1.3 269
HICKERSON PARK 9100 -M .1 * -M .9 *
HOLE-IN-ROCK 9150 .0 .1 0* 2.9 .9 322
INDIAN CREEK 9425 .3 .5 60* 1.3 1.4 93
KELLEY R.S. 8180 .3 .3 100* 1.8 1.1 164
STEEL CREEK PARK 10100 2.4 .9 267* 3.4 1.2 283
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Basin wide percent of average 125* 206
UPPER BEAR RIVER
BUG LAKE 7950 .2 .6 33* .6 1.2 50
HAYDEN FORK 9100 .4 .5 80* 1.8 1.3 138
KELLEY R.S. 8180 .3 .3 100* 1.8 1.1 164
LILY LAKE 9050 .2 .5 40* 2.4 1.3 185
MONTE CRISTO 8960 .4 .8 50* 1.9 1.5 127
SALT RIVER SUMMIT 7600 .3 .0 * 1.4 1.0 140
TRIAL LAKE 9960 .3 .9 33* 1.2 1.5 80
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Basin wide percent of average 50* 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 1971-2000.
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.