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 11 , 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 1.0 160
GRANITE CREEK 6770 .1 .1 100* 1.3 .6 217
GRASSY LAKE 7265 .1 .2 50* 1.5 1.1 136
GROS VENTRE SUMMIT 8750 .7 .4 175* 1.7 .6 283
LEWIS LAKE DIVIDE 7850 .2 .1 200* .9 1.1 82
PHILLIPS BENCH 8200 .0 .1 0* 1.3 .8 162
SALT RIVER SUMMIT 7600 .1 .0 * 1.1 .6 183
SNAKE RIVER STATION 6920 .0 .0 100* 1.7 .7 243
SPRING CREEK DIVIDE 9000 .1 .2 50* .9 .9 100
THUMB DIVIDE 7980 .1 .1 100* 2.0 .7 286
TOGWOTEE PASS 9580 1.5 .7 214* 2.4 .9 267
TWO OCEAN PLATEAU 9240 2.2 .9 244* 2.8 1.0 280
WILLOW CREEK 8450 .1 .3 33* 1.9 1.2 158
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Basin wide percent of average 155* 191
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 2.0 1.0 200* 1.9 .7 271
BLACK BEAR 8170 1.0 .7 143* 2.2 1.2 183
CANYON 8090 .7 .2 350* 1.9 .6 317
FISHER CREEK 9100 2.8 .8 350* 3.1 1.1 282
MADISON PLATEAU 7750 .9 .3 300* 2.1 .8 262
NORTHEAST ENTRANCE 7350 -M .1 * -M .5 *
PARKER PEAK 9400 1.7 1.0 170* 2.3 .8 287
SYLVAN LAKE 8420 .0 .8 0* 2.1 .9 233
THUMB DIVIDE 7980 .1 .1 100* 2.0 .7 286
TWO OCEAN PLATEAU 9240 2.2 .9 244* 2.8 1.0 280
WHISKEY CREEK 6800 .0 .1 0* 2.1 .7 300
WHITE MILL 8700 2.0 .6 333* 2.3 .9 256
WOLVERINE 7650 .0 .1 0* 1.5 .6 250
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Basin wide percent of average 203* 263
WIND RIVER
BURROUGHS CREEK 8750 .0 .3 0* 1.4 .5 280
COLD SPRINGS 9630 .0 .2 0* 1.4 .6 233
DEER PARK 9700 .8 .7 114* 2.0 .8 250
HOBBS PARK 10100 .6 .6 100* 2.2 .7 314
LITTLE WARM 9370 .0 .3 0* 1.2 .6 200
SOUTH PASS 9040 .0 .3 0* 1.3 .7 186
ST. LAWRENCE ALT 8620 .0 .1 0* 1.0 .6 167
TOGWOTEE PASS 9580 1.5 .7 214* 2.4 .9 267
TOWNSEND CREEK 8700 .0 .2 0* 1.6 .7 229
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Basin wide percent of average 85* 238
BIGHORN BASIN
BALD MTN. 9380 1.3 1.2 108* 2.1 .8 262
BEAR TRAP MEADOW 8200 .0 .2 0* .7 .6 117
BLACKWATER 9780 1.8 1.2 150* 2.2 .9 244
BONE SPRINGS DIV 9350 1.2 1.1 109* 2.0 .8 250
EVENING STAR 9200 1.8 1.0 180* 2.5 .9 278
GRAVE SPRINGS 8550 .0 .2 0* 1.1 .7 157
KIRWIN 9550 1.9 .7 271* 2.7 .6 450
MARQUETTE 8760 .0 .8 0* 1.3 .8 162
MIDDLE POWDER 7760 .0 .5 0* .8 .9 89
OWL CREEK 8975 .0 .3 0* 1.5 .4 375
POWDER RIVER PASS 9480 .0 .4 0* 1.7 .6 283
SHELL CREEK 9580 1.7 1.3 131* 2.5 .7 357
SYLVAN LAKE 8420 .0 .8 0* 2.1 .9 233
SYLVAN ROAD 7120 .0 .1 0* 2.0 .7 286
TIMBER CREEK 7950 .7 .1 700* 2.0 .5 400
YOUNTS PEAK 8350 .9 .5 180* 2.0 .6 333
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Basin wide percent of average 109* 256
SHOSHONE RIVER
BLACKWATER 9780 1.8 1.2 150* 2.2 .9 244
EVENING STAR 9200 1.8 1.0 180* 2.5 .9 278
KIRWIN 9550 1.9 .7 271* 2.7 .6 450
MARQUETTE 8760 .0 .8 0* 1.3 .8 162
SYLVAN LAKE 8420 .0 .8 0* 2.1 .9 233
SYLVAN ROAD 7120 .0 .1 0* 2.0 .7 286
YOUNTS PEAK 8350 .9 .5 180* 2.0 .6 333
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Basin wide percent of average 125* 274
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .2 0* .7 .6 117
BIG GOOSE 7990 .0 .2 0* 1.5 .7 214
BONE SPRINGS DIV 9350 1.2 1.1 109* 2.0 .8 250
BURGESS JUNCTION 7880 .0 .5 0* 1.2 .7 171
CLOUD PEAK RESERVOIR 9860 .0 .3 0* 1.7 .9 189
DOME LAKE 8880 .0 .6 0* 1.9 .8 237
GRAVE SPRINGS 8550 .0 .2 0* 1.1 .7 157
HANSEN SAWMILL 8360 .0 .2 0* 1.2 .6 200
MIDDLE POWDER 7760 .0 .5 0* .8 .9 89
POWDER RIVER PASS 9480 .0 .4 0* 1.7 .6 283
SUCKER CREEK 8880 .0 .4 0* 1.2 .8 150
TIE CREEK 6870 .0 .0 100* .9 .8 112
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Basin wide percent of average 26* 179
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* .7 .9 78
COLE CANYON 5910 .0 .0 100* .8 -M *
NORTH RAPID CREEK 6130 .0 .1 0* .7 .8 87
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Basin wide percent of average 0* 82
UPPER N. PLATTE RIVER
COLUMBINE 9160 .1 .0 * 1.6 .8 200
DIVIDE PEAK 8860 -M .5 * -M .9 *
ELK RIVER 8700 .0 .1 0* 1.2 .7 171
JOE WRIGHT 10120 .3 .6 50* 1.6 1.1 145
NORTH FRENCH CREEK 10130 .2 1.0 20* 1.3 1.1 118
OLD BATTLE 9920 .6 .8 75* 2.1 1.2 175
SAGE CREEK BASIN 7850 .0 .2 0* 1.0 .5 200
SOUTH BRUSH CREEK 8440 .2 .1 200* 1.3 .9 144
TOWER 10500 .1 .7 14* 2.5 1.3 192
WEBBER SPRINGS 9250 .0 .4 0* 1.3 1.0 130
WILLOW CREEK PASS 9540 .2 .2 100* .8 .7 114
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Basin wide percent of average 39* 158
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 .0 .7 0* .7 .8 87
CASPER MTN. 7850 .2 .4 50* 1.2 .8 150
DEADMAN HILL 10220 1.0 .7 143* .6 .8 75
DEER PARK 9700 .8 .7 114* 2.0 .8 250
LAPRELE CREEK 8375 .0 .2 0* .7 .6 117
RENO HILL 8500 .1 .5 20* 1.0 .8 125
ROACH 9700 .1 .2 50* .8 .8 100
SAND LAKE 10050 .7 1.0 70* 1.2 1.0 120
SOUTH PASS 9040 .0 .3 0* 1.3 .7 186
WINDY PEAK 7900 .0 .1 0* .3 .6 50
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Basin wide percent of average 60* 127
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 .0 * .9 .6 150
DIVIDE PEAK 8860 -M .5 * -M .9 *
OLD BATTLE 9920 .6 .8 75* 2.1 1.2 175
SANDSTONE RS 8150 .0 .1 0* .8 .8 100
WHISKEY PARK 8950 .0 .4 0* 1.3 1.0 130
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Basin wide percent of average 46* 142
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .1 .3 33* 1.2 .6 200
BLIND BULL SUM 8900 .1 .3 33* .9 .7 129
EAST RIM DIVIDE 7930 .0 .0 100* 1.1 .5 220
ELKHART PARK G.S. 9400 .0 .1 0* 1.2 .6 200
GROS VENTRE SUMMIT 8750 .7 .4 175* 1.7 .6 283
KENDALL R.S. 7740 .1 .0 * 1.0 .5 200
LOOMIS PARK 8240 .0 .1 0* 1.1 .6 183
NEW FORK LAKE 8340 .0 .0 100* 1.1 .5 220
SNIDER BASIN 8060 .3 .1 300* .4 .5 80
SPRING CREEK DIVIDE 9000 .1 .2 50* .9 .9 100
TRIPLE PEAK 8500 .1 .1 100* 1.0 .7 143
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Basin wide percent of average 87* 173
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* .8 .5 160
HEWINTA 9500 .0 .3 0* 2.8 .8 350
HICKERSON PARK 9100 .1 .0 * 2.2 .6 367
HOLE-IN-ROCK 9150 .0 .0 100* 2.3 .5 460
INDIAN CREEK 9425 .3 .3 100* 1.1 .9 122
KELLEY R.S. 8180 .3 .1 300* 1.5 .7 214
STEEL CREEK PARK 10100 -M .7 * -M .8 *
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Basin wide percent of average 86* 268
UPPER BEAR RIVER
BUG LAKE 7950 .0 .4 0* .4 .8 50
HAYDEN FORK 9100 .1 .3 33* 1.3 .8 162
KELLEY R.S. 8180 .3 .1 300* 1.5 .7 214
LILY LAKE 9050 -M .3 * 1.9 .8 237
MONTE CRISTO 8960 .1 .6 17* 1.4 .9 156
SALT RIVER SUMMIT 7600 .1 .0 * 1.1 .6 183
TRIAL LAKE 9960 .0 .7 0* .9 .9 100
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Basin wide percent of average 24* 155
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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.