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 20 , 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 1.0 .3 333* -M 1.3 *
COTTONWOOD CREEK 7600 1.3 .4 325* 3.6 1.9 189
GRANITE CREEK 6770 1.6 .2 800* 3.3 1.1 300
GRASSY LAKE 7265 .9 .7 129* 4.9 2.1 233
GROS VENTRE SUMMIT 8750 1.7 .8 212* 3.0 1.2 250
LEWIS LAKE DIVIDE 7850 1.2 .5 240* -M 2.0 *
PHILLIPS BENCH 8200 1.3 .6 217* 4.1 1.5 273
SALT RIVER SUMMIT 7600 .4 .1 400* 2.2 1.2 183
SNAKE RIVER STATION 6920 .3 .2 150* 4.0 1.4 286
SPRING CREEK DIVIDE 9000 1.6 .7 229* 2.6 1.7 153
THUMB DIVIDE 7980 .8 .3 267* 3.6 1.3 277
TOGWOTEE PASS 9580 3.9 1.5 260* 4.6 1.8 256
TWO OCEAN PLATEAU 9240 -M 1.8 * 4.9 2.0 245
WILLOW CREEK 8450 1.2 .8 150* 3.8 2.3 165
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Basin wide percent of average 242* 229
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 -M 1.7 * 3.9 1.3 300
BLACK BEAR 8170 3.4 1.4 243* 5.2 2.2 236
CANYON 8090 -M .3 * -M 1.2 *
FISHER CREEK 9100 -M 1.5 * -M 2.1 *
MADISON PLATEAU 7750 1.6 .8 200* 4.3 1.6 269
NORTHEAST ENTRANCE 7350 .3 .2 150* 3.0 1.0 300
PARKER PEAK 9400 -M 1.6 * 4.4 1.5 293
SYLVAN LAKE 8420 1.7 1.2 142* -M 1.7 *
THUMB DIVIDE 7980 .8 .3 267* 3.6 1.3 277
TWO OCEAN PLATEAU 9240 -M 1.8 * 4.9 2.0 245
WHISKEY CREEK 6800 1.0 .3 333* 3.9 1.4 279
WHITE MILL 8700 -M 1.1 * 4.4 1.7 259
WOLVERINE 7650 .8 .2 400* -M 1.2 *
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Basin wide percent of average 218* 269
WIND RIVER
BURROUGHS CREEK 8750 -M .5 * -M 1.0 *
COLD SPRINGS 9630 .3 .5 60* 2.1 1.2 175
DEER PARK 9700 1.1 1.4 79* 2.8 1.6 175
HOBBS PARK 10100 1.2 1.2 100* 2.9 1.3 223
LITTLE WARM 9370 .8 .6 133* 2.4 1.1 218
SOUTH PASS 9040 .2 .8 25* 1.8 1.3 138
ST. LAWRENCE ALT 8620 .3 .3 100* 1.2 1.1 109
TOGWOTEE PASS 9580 3.9 1.5 260* 4.6 1.8 256
TOWNSEND CREEK 8700 .2 .5 40* 2.0 1.3 154
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Basin wide percent of average 118* 185
BIGHORN BASIN
BALD MTN. 9380 2.5 1.9 132* 3.2 1.5 213
BEAR TRAP MEADOW 8200 .2 .3 67* 1.2 1.1 109
BLACKWATER 9780 -M 2.0 * 3.8 1.7 224
BONE SPRINGS DIV 9350 .9 1.7 53* 2.9 1.6 181
EVENING STAR 9200 3.8 1.7 224* -M 1.8 *
GRAVE SPRINGS 8550 .7 .5 140* 1.9 1.3 146
KIRWIN 9550 -M 1.1 * 3.9 1.2 325
MARQUETTE 8760 .2 1.2 17 1.9 1.5 127
MIDDLE POWDER 7760 1.5 .8 188* 1.6 1.7 94
OWL CREEK 8975 .3 .5 60* 1.9 .7 271
POWDER RIVER PASS 9480 .4 .7 57* 2.2 1.2 183
SHELL CREEK 9580 2.6 1.9 137 3.4 1.3 262
SYLVAN LAKE 8420 1.7 1.2 142* -M 1.7 *
SYLVAN ROAD 7120 .3 .2 150* -M 1.3 *
TIMBER CREEK 7950 .1 .4 25* 2.1 1.0 210
YOUNTS PEAK 8350 1.9 .8 237* -M 1.2 *
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Basin wide percent of average 124* 190
SHOSHONE RIVER
BLACKWATER 9780 -M 2.0 * 3.8 1.7 224
EVENING STAR 9200 3.8 1.7 224* -M 1.8 *
KIRWIN 9550 -M 1.1 * 3.9 1.2 325
MARQUETTE 8760 .2 1.2 17 1.9 1.5 127
SYLVAN LAKE 8420 1.7 1.2 142* -M 1.7 *
SYLVAN ROAD 7120 .3 .2 150* -M 1.3 *
YOUNTS PEAK 8350 1.9 .8 237* -M 1.2 *
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Basin wide percent of average 155* 218*
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .2 .3 67* 1.2 1.1 109
BIG GOOSE 7990 .8 .5 160* 2.6 1.3 200
BONE SPRINGS DIV 9350 .9 1.7 53* 2.9 1.6 181
BURGESS JUNCTION 7880 .8 .9 89* 2.1 1.4 150
CLOUD PEAK RESERVOIR 9860 1.5 .8 188* 3.4 1.7 200
DOME LAKE 8880 1.0 1.1 91* 2.9 1.6 181
GRAVE SPRINGS 8550 .7 .5 140* 1.9 1.3 146
HANSEN SAWMILL 8360 .4 .4 100* 2.0 1.2 167
MIDDLE POWDER 7760 1.5 .8 188* 1.6 1.7 94
POWDER RIVER PASS 9480 .4 .7 57* 2.2 1.2 183
SUCKER CREEK 8880 .8 .8 100* 2.4 1.5 160
TIE CREEK 6870 .0 .3 0* 2.0 1.6 125
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Basin wide percent of average 102* 158
BELLE FOURCHE
BLIND PARK 6890 .2 .2 100* 1.2 1.7 71
COLE CANYON 5910 .0 .3 0* 1.0 -M *
NORTH RAPID CREEK 6130 .0 .2 0* .9 1.6 56
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Basin wide percent of average 29* 64
UPPER N. PLATTE RIVER
COLUMBINE 9160 .5 .3 167* 3.3 1.5 220
DIVIDE PEAK 8860 .2 1.0 20* -M 1.7 *
ELK RIVER 8700 .0 .3 0* 2.4 1.4 171
JOE WRIGHT 10120 1.5 1.4 107* 3.8 2.1 181
NORTH FRENCH CREEK 10130 1.0 2.0 50* 2.4 2.1 114
OLD BATTLE 9920 1.3 1.7 76* 3.1 2.3 135
SAGE CREEK BASIN 7850 .1 .5 20* 1.5 1.0 150
SOUTH BRUSH CREEK 8440 .2 .4 50* 1.8 1.7 106
TOWER 10500 2.1 1.8 117* 4.0 2.5 160
WEBBER SPRINGS 9250 .5 .9 56* 2.4 2.0 120
WILLOW CREEK PASS 9540 1.1 .6 183* 1.9 1.3 146
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Basin wide percent of average 78* 149
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 .4 1.3 31* 1.6 1.6 100
CASPER MTN. 7850 .3 1.0 30* 2.1 1.6 131
DEADMAN HILL 10220 1.5 1.3 115* 2.2 1.6 138
DEER PARK 9700 1.1 1.4 79* 2.8 1.6 175
LAPRELE CREEK 8375 .0 .5 0* 1.2 1.2 100
RENO HILL 8500 .5 1.0 50* 2.0 1.6 125
ROACH 9700 1.1 .6 183* 2.2 1.5 147
SAND LAKE 10050 2.2 1.9 116* 2.9 2.0 145
SOUTH PASS 9040 .2 .8 25* 1.8 1.3 138
WINDY PEAK 7900 .4 .2 200* 1.2 1.1 109
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Basin wide percent of average 77* 132
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 .2 50* 1.3 1.2 108
DIVIDE PEAK 8860 .2 1.0 20* -M 1.7 *
OLD BATTLE 9920 1.3 1.7 76* 3.1 2.3 135
SANDSTONE RS 8150 .0 .2 0* 1.2 1.5 80
WHISKEY PARK 8950 .5 .9 56* 2.6 1.8 144
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Basin wide percent of average 52* 121
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .7 .7 100* 1.9 1.2 158
BLIND BULL SUM 8900 1.5 .8 188* 2.5 1.4 179
EAST RIM DIVIDE 7930 .5 .2 250* 1.8 .9 200
ELKHART PARK G.S. 9400 .9 .4 225* 2.0 1.2 167
GROS VENTRE SUMMIT 8750 1.7 .8 212* 3.0 1.2 250
KENDALL R.S. 7740 1.0 .2 500* 2.2 1.0 220
LOOMIS PARK 8240 1.0 .4 250* 2.2 1.2 183
NEW FORK LAKE 8340 .7 .2 350* 1.9 1.0 190
SNIDER BASIN 8060 .5 .3 167* 1.4 1.0 140
SPRING CREEK DIVIDE 9000 1.6 .7 229* 2.6 1.7 153
TRIPLE PEAK 8500 1.2 .5 240* 3.3 1.4 236
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Basin wide percent of average 217* 188
LOWER GREEN RIVER
HAMS FORK 7840 .0 .1 0* 1.4 .9 156
HEWINTA 9500 .0 .5 0* 3.7 1.5 247
HICKERSON PARK 9100 .3 .1 300* 2.6 1.1 236
HOLE-IN-ROCK 9150 .0 .1 0* 3.0 1.0 300
INDIAN CREEK 9425 1.3 .8 162* 2.2 1.7 129
KELLEY R.S. 8180 .8 .4 200* 2.5 1.3 192
STEEL CREEK PARK 10100 3.2 1.1 291* 3.8 1.5 253
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Basin wide percent of average 181* 213
UPPER BEAR RIVER
BUG LAKE 7950 .1 .7 14* 1.7 1.5 113
HAYDEN FORK 9100 .1 .5 20* 2.6 1.5 173
KELLEY R.S. 8180 .8 .4 200* 2.5 1.3 192
LILY LAKE 9050 .1 .6 17* 2.5 1.5 167
MONTE CRISTO 8960 .4 1.0 40* 2.8 1.8 156
SALT RIVER SUMMIT 7600 .4 .1 400* 2.2 1.2 183
TRIAL LAKE 9960 .8 1.2 67* 1.9 1.8 106
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Basin wide percent of average 60* 153
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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.