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 12 , 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 .0 .1 0* 1.6 .7 229
COTTONWOOD CREEK 7600 .0 .1 0* 1.6 1.1 145
GRANITE CREEK 6770 .0 .1 0* 1.3 .6 217
GRASSY LAKE 7265 .1 .2 50* 1.5 1.2 125
GROS VENTRE SUMMIT 8750 .7 .5 140* 1.7 .7 243
LEWIS LAKE DIVIDE 7850 .1 .1 100* .9 1.2 75
PHILLIPS BENCH 8200 .0 .2 0* 1.3 .9 144
SALT RIVER SUMMIT 7600 .1 .0 * 1.1 .7 157
SNAKE RIVER STATION 6920 .0 .0 100* 1.6 .8 200
SPRING CREEK DIVIDE 9000 .1 .2 50* .9 1.0 90
THUMB DIVIDE 7980 .0 .1 0* 1.9 .7 271
TOGWOTEE PASS 9580 1.5 .8 188* 2.4 1.0 240
TWO OCEAN PLATEAU 9240 2.1 .9 233* 2.7 1.1 245
WILLOW CREEK 8450 .1 .3 33* 1.9 1.3 146
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Basin wide percent of average 131* 172
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.9 1.1 173* 1.8 .8 225
BLACK BEAR 8170 1.2 .7 171* 2.2 1.3 169
CANYON 8090 .7 .2 350* 1.9 .7 271
FISHER CREEK 9100 2.8 .8 350* 3.1 1.2 258
MADISON PLATEAU 7750 .9 .4 225* 2.1 .9 233
NORTHEAST ENTRANCE 7350 -M .1 * -M .6 *
PARKER PEAK 9400 1.6 1.0 160* 2.3 .9 256
SYLVAN LAKE 8420 .0 .8 0* 2.1 1.0 210
THUMB DIVIDE 7980 .0 .1 0* 1.9 .7 271
TWO OCEAN PLATEAU 9240 2.1 .9 233* 2.7 1.1 245
WHISKEY CREEK 6800 .0 .1 0* 2.1 .8 262
WHITE MILL 8700 1.9 .6 317* 2.3 1.0 230
WOLVERINE 7650 .0 .1 0* 1.4 .7 200
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Basin wide percent of average 193* 233
WIND RIVER
BURROUGHS CREEK 8750 .0 .3 0* 1.4 .6 233
COLD SPRINGS 9630 .0 .2 0* 1.4 .7 200
DEER PARK 9700 .6 .7 86* 2.0 .9 222
HOBBS PARK 10100 .6 .6 100* 2.2 .8 275
LITTLE WARM 9370 .0 .4 0* 1.2 .6 200
SOUTH PASS 9040 .0 .3 0* 1.3 .8 162
ST. LAWRENCE ALT 8620 .0 .1 0* 1.0 .6 167
TOGWOTEE PASS 9580 1.5 .8 188* 2.4 1.0 240
TOWNSEND CREEK 8700 .0 .2 0* 1.6 .8 200
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Basin wide percent of average 75* 213
BIGHORN BASIN
BALD MTN. 9380 1.3 1.3 100* 2.1 .9 233
BEAR TRAP MEADOW 8200 .0 .2 0* .7 .6 117
BLACKWATER 9780 1.7 1.3 131* 2.2 1.0 220
BONE SPRINGS DIV 9350 .6 1.1 55* 2.0 .9 222
EVENING STAR 9200 1.7 1.0 170* 2.5 1.0 250
GRAVE SPRINGS 8550 .0 .2 0* 1.2 .8 150
KIRWIN 9550 1.7 .7 243* 2.7 .7 386
MARQUETTE 8760 .0 .8 0* 1.3 .9 144
MIDDLE POWDER 7760 .1 .5 20* .9 1.0 90
OWL CREEK 8975 .0 .3 0* 1.5 .4 375
POWDER RIVER PASS 9480 .0 .5 0* 1.7 .7 243
SHELL CREEK 9580 1.5 1.4 107* 2.5 .7 357
SYLVAN LAKE 8420 .0 .8 0* 2.1 1.0 210
SYLVAN ROAD 7120 .0 .1 0* 2.1 .8 262
TIMBER CREEK 7950 .6 .1 600* 2.0 .6 333
YOUNTS PEAK 8350 .8 .5 160* 1.9 .7 271
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Basin wide percent of average 93* 231
SHOSHONE RIVER
BLACKWATER 9780 1.7 1.3 131* 2.2 1.0 220
EVENING STAR 9200 1.7 1.0 170* 2.5 1.0 250
KIRWIN 9550 1.7 .7 243* 2.7 .7 386
MARQUETTE 8760 .0 .8 0* 1.3 .9 144
SYLVAN LAKE 8420 .0 .8 0* 2.1 1.0 210
SYLVAN ROAD 7120 .0 .1 0* 2.1 .8 262
YOUNTS PEAK 8350 .8 .5 160* 1.9 .7 271
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Basin wide percent of average 113* 243
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .2 0* .7 .6 117
BIG GOOSE 7990 .0 .2 0* 1.2 .8 150
BONE SPRINGS DIV 9350 .6 1.1 55* 2.0 .9 222
BURGESS JUNCTION 7880 .0 .5 0* 1.2 .8 150
CLOUD PEAK RESERVOIR 9860 .0 .3 0* 1.7 1.0 170
DOME LAKE 8880 .0 .6 0* 1.9 .9 211
GRAVE SPRINGS 8550 .0 .2 0* 1.2 .8 150
HANSEN SAWMILL 8360 .2 .2 100* 1.2 .7 171
MIDDLE POWDER 7760 .1 .5 20* .9 1.0 90
POWDER RIVER PASS 9480 .0 .5 0* 1.7 .7 243
SUCKER CREEK 8880 .0 .4 0* 1.2 .9 133
TIE CREEK 6870 .0 .0 100* .9 .9 100
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Basin wide percent of average 19* 158
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* .7 1.0 70
COLE CANYON 5910 .0 .0 100* .6 -M *
NORTH RAPID CREEK 6130 .0 .1 0* .7 .9 78
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Basin wide percent of average 0* 74
UPPER N. PLATTE RIVER
COLUMBINE 9160 .0 .0 100* 1.4 .9 156
DIVIDE PEAK 8860 -M .6 * -M 1.0 *
ELK RIVER 8700 .0 .1 0* 1.0 .8 125
JOE WRIGHT 10120 .2 .6 33* 1.5 1.2 125
NORTH FRENCH CREEK 10130 .2 1.1 18* 1.3 1.2 108
OLD BATTLE 9920 .5 .9 56* 2.0 1.3 154
SAGE CREEK BASIN 7850 .0 .2 0* .9 .6 150
SOUTH BRUSH CREEK 8440 .1 .2 50* 1.0 1.0 100
TOWER 10500 .0 .8 0* 2.6 1.5 173
WEBBER SPRINGS 9250 .0 .4 0* 1.3 1.1 118
WILLOW CREEK PASS 9540 .1 .2 50* .6 .7 86
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Basin wide percent of average 24* 132
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 .0 .8 0* .7 .9 78
CASPER MTN. 7850 .0 .5 0* 1.1 .9 122
DEADMAN HILL 10220 .5 .8 62* .6 .9 67
DEER PARK 9700 .6 .7 86* 2.0 .9 222
LAPRELE CREEK 8375 .0 .2 0* .7 .7 100
RENO HILL 8500 .1 .5 20* .9 .9 100
ROACH 9700 .0 .2 0* .9 .9 100
SAND LAKE 10050 .6 1.1 55* 1.1 1.1 100
SOUTH PASS 9040 .0 .3 0* 1.3 .8 162
WINDY PEAK 7900 .0 .1 0* .3 .6 50
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Basin wide percent of average 35* 112
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* .8 .7 114
DIVIDE PEAK 8860 -M .6 * -M 1.0 *
OLD BATTLE 9920 .5 .9 56* 2.0 1.3 154
SANDSTONE RS 8150 .0 .1 0* .8 .9 89
WHISKEY PARK 8950 .0 .4 0* 1.2 1.1 109
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Basin wide percent of average 36* 120
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .1 .3 33* 1.1 .7 157
BLIND BULL SUM 8900 .1 .3 33* .9 .8 112
EAST RIM DIVIDE 7930 .0 .0 100* 1.1 .5 220
ELKHART PARK G.S. 9400 .0 .2 0* 1.2 .7 171
GROS VENTRE SUMMIT 8750 .7 .5 140* 1.7 .7 243
KENDALL R.S. 7740 .0 .0 100* 1.0 .6 167
LOOMIS PARK 8240 .0 .2 0* 1.0 .7 143
NEW FORK LAKE 8340 .0 .0 100* 1.1 .6 183
SNIDER BASIN 8060 .2 .1 200* .4 .6 67
SPRING CREEK DIVIDE 9000 .1 .2 50* .9 1.0 90
TRIPLE PEAK 8500 .0 .2 0* .9 .8 112
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Basin wide percent of average 60* 147
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* .8 .5 160
HEWINTA 9500 .0 .3 0* 2.7 .9 300
HICKERSON PARK 9100 .1 .0 * 2.3 .6 383
HOLE-IN-ROCK 9150 .0 .0 100* 2.3 .6 383
INDIAN CREEK 9425 .2 .3 67* 1.1 1.0 110
KELLEY R.S. 8180 .2 .2 100* 1.4 .8 175
STEEL CREEK PARK 10100 1.7 .7 243* 2.8 .9 311
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Basin wide percent of average 140* 253
UPPER BEAR RIVER
BUG LAKE 7950 .1 .4 25* .5 .9 56
HAYDEN FORK 9100 .2 .3 67* 1.4 .9 156
KELLEY R.S. 8180 .2 .2 100* 1.4 .8 175
LILY LAKE 9050 -M .3 * 2.0 .9 222
MONTE CRISTO 8960 .0 .6 0* 1.3 1.0 130
SALT RIVER SUMMIT 7600 .1 .0 * 1.1 .7 157
TRIAL LAKE 9960 .0 .7 0* .8 1.0 80
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Basin wide percent of average 23* 137
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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.