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 TUESDAY: OCTOBER 18 , 2011
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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* 3.2 1.0 320
COTTONWOOD CREEK 7670 .0 .2 0* 4.3 1.5 287
GRAND TARGHEE 9260 2.5 -M * 4.7 -M *
GRANITE CREEK 6770 .0 .1 0* 2.3 .9 256
GRASSY LAKE 7265 .0 .4 0* 5.1 1.7 300
GROS VENTRE SUMMIT 8750 .3 .7 43* 1.8 1.0 180
GUNSIGHT PASS 9820 .8 -M * 2.1 -M *
LEWIS LAKE DIVIDE 7850 .2 .2 100* 4.0 1.5 267
PHILLIPS BENCH 8200 .0 .4 0* 2.4 1.2 200
SALT RIVER SUMMIT 7760 -M .0 * -M 1.0 *
SNAKE RIVER STATION 6920 .0 .1 0* 3.3 1.2 275
SPRING CREEK DIVIDE 9000 1.2 .5 240* 3.1 1.2 258
THUMB DIVIDE 7980 .0 .2 0* 2.2 1.1 200
TOGWOTEE PASS 9580 1.3 1.3 100* 2.8 1.4 200
TWO OCEAN PLATEAU 9240 3.1 1.5 207* 3.4 1.6 213
WILLOW CREEK 8380 .4 .6 67* 4.9 2.0 245
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Basin wide percent of average 103* 247
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 1.1 1.6 69* 2.0 1.1 182
BLACK BEAR 8170 1.8 1.0 180* 4.7 1.7 276
CANYON 7870 .0 .3 0* 1.4 .9 156
FISHER CREEK 9100 1.5 1.1 136* 3.4 1.7 200
MADISON PLATEAU 7750 .0 .5 0* 3.6 1.4 257
NORTHEAST ENTRANCE 7350 .0 .1 0* 1.6 .9 178
PARKER PEAK 9400 .0 1.6 0* 2.0 1.3 154
SYLVAN LAKE 8420 .3 1.0 30* 3.5 1.4 250
THUMB DIVIDE 7980 .0 .2 0* 2.2 1.1 200
TWO OCEAN PLATEAU 9240 3.1 1.5 207* 3.4 1.6 213
WHISKEY CREEK 6800 .0 .2 0* 3.2 1.1 291
WHITE MILL 8700 .8 .8 100* 2.7 1.4 193
WOLVERINE 7650 .0 .2 0* 1.6 1.1 145
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Basin wide percent of average 85* 211
WIND RIVER
BURROUGHS CREEK 8750 .0 .4 0* 1.2 .9 133
CASTLE CREEK 8400 .0 -M * 1.1 -M *
COLD SPRINGS 9630 .0 .4 0* 1.5 1.0 150
DEER PARK 9700 .7 1.0 70* 2.3 1.2 192
HOBBS PARK 10100 1.6 1.2 133* 2.3 1.2 192
LITTLE WARM 9370 .0 .5 0* 1.4 .9 156
SOUTH PASS 9040 .6 .6 100* 2.1 1.1 191
ST. LAWRENCE ALT 8620 .0 .4 0* 1.0 1.0 100
TOGWOTEE PASS 9580 1.3 1.3 100* 2.8 1.4 200
TOWNSEND CREEK 8700 .0 .6 0* 2.4 1.2 200
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Basin wide percent of average 66* 172
BIGHORN BASIN
BALD MTN. 9380 2.9 1.7 171* 3.1 1.4 221
BEAR TRAP MEADOW 8200 .5 .4 125* 1.5 1.0 150
BLACKWATER 9780 2.8 1.9 147* 2.9 1.4 207
BONE SPRINGS DIV 9350 3.2 1.5 213* 3.6 1.5 240
EVENING STAR 9200 .0 1.5 0* 2.7 1.4 193
GRAVE SPRINGS 8550 .4 .7 57* 1.8 1.3 138
KIRWIN 9550 1.5 1.0 150* 2.6 1.0 260
MARQUETTE 8760 .3 -M * 3.1 1.3 238
MIDDLE POWDER 7760 .9 .9 100* 3.8 1.5 253
OWL CREEK 8975 .0 .5 0* 1.3 .7 186
POWDER RIVER PASS 9480 1.8 .7 257* 2.7 1.1 245
SHELL CREEK 9580 3.7 1.8 206 3.4 1.2 283
SYLVAN LAKE 8420 .3 1.0 30* 3.5 1.4 250
SYLVAN ROAD 7120 .0 .2 0* 1.8 .9 200
TIMBER CREEK 7950 .0 .6 0 3.4 .9 378
YOUNTS PEAK 8350 .0 .6 0* 2.2 1.0 220
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Basin wide percent of average 120* 228
SHOSHONE RIVER
BLACKWATER 9780 2.8 1.9 147* 2.9 1.4 207
EVENING STAR 9200 .0 1.5 0* 2.7 1.4 193
KIRWIN 9550 1.5 1.0 150* 2.6 1.0 260
MARQUETTE 8760 .3 -M * 3.1 1.3 238
SYLVAN LAKE 8420 .3 1.0 30* 3.5 1.4 250
SYLVAN ROAD 7120 .0 .2 0* 1.8 .9 200
YOUNTS PEAK 8350 .0 .6 0* 2.2 1.0 220
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Basin wide percent of average 74* 224
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .5 .4 125* 1.5 1.0 150
BIG GOOSE 7990 1.7 .4 425* 3.9 1.3 300
BONE SPRINGS DIV 9350 3.2 1.5 213* 3.6 1.5 240
BURGESS JUNCTION 7880 1.7 .9 189* 3.6 1.3 277
CLOUD PEAK RESERVOIR 9860 1.5 .8 188* 3.2 1.5 213
DOME LAKE 8880 2.3 1.0 230* 4.1 1.4 293
GRAVE SPRINGS 8550 .4 .7 57* 1.8 1.3 138
HANSEN SAWMILL 8360 .0 .4 0* 1.5 1.0 150
LITTLE GOOSE 8870 1.8 -M * 4.3 -M *
MIDDLE POWDER 7760 .9 .9 100* 3.8 1.5 253
POWDER RIVER PASS 9480 1.8 .7 257* 2.7 1.1 245
SOLDIER PARK 8720 .0 -M * 2.3 -M *
SUCKER CREEK 8880 2.4 .8 300* 3.6 1.4 257
TIE CREEK 6870 .0 .5 0* 4.1 1.5 273
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Basin wide percent of average 182* 237
BELLE FOURCHE
BLIND PARK 6890 .0 .2 0* 1.0 1.4 71
COLE CANYON 5910 .0 .4 0* 1.2 1.1 109
NORTH RAPID CREEK 6130 .0 .2 0* .5 1.4 36
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Basin wide percent of average 0* 69
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 1.7 -M * 3.2 -M *
CINNABAR PARK 9574 .4 .5 80* 2.5 1.2 208
COLUMBINE 9160 .3 .1 300* 2.0 1.2 167
DIVIDE PEAK 8880 .1 .9 11* 2.4 1.5 160
ELK RIVER 8700 .0 .2 0* 2.0 1.2 167
JOE WRIGHT 10120 .0 1.1 0* 2.3 1.8 128
NORTH FRENCH CREEK 10130 1.9 1.6 119* 3.2 1.7 188
OLD BATTLE 10000 1.8 1.4 129* 3.0 1.8 167
SAGE CREEK BASIN 7850 .0 .5 0* 1.6 .8 200
SOUTH BRUSH CREEK 8440 .1 .2 50* 2.2 1.4 157
TOWER 10500 .7 1.3 54* 2.8 1.9 147
WEBBER SPRINGS 9250 .3 .7 43* 2.7 1.6 169
WILLOW CREEK PASS 9540 .3 .5 60* -M 1.1 *
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Basin wide percent of average 66* 166
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .5 1.1 45* 2.5 1.2 208
CASPER MTN. 7900 2.1 .8 263* 4.5 1.3 346
DEADMAN HILL 10220 .9 1.1 82* 2.0 1.3 154
DEER PARK 9700 .7 1.0 70* 2.3 1.2 192
LAPRELE CREEK 8375 .0 .4 0* 1.8 1.0 180
RENO HILL 8400 1.6 .9 178* 3.1 1.3 238
ROACH 9700 .7 .4 175* 2.2 1.2 183
SAND LAKE 10050 2.3 1.6 144* 3.0 1.6 188
SOUTH PASS 9040 .6 .6 100* 2.1 1.1 191
WINDY PEAK 7900 .0 .2 0* 1.1 .9 122
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Basin wide percent of average 116* 203
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 .0 * 1.4 1.0 140
DIVIDE PEAK 8880 .1 .9 11* 2.4 1.5 160
OLD BATTLE 10000 1.8 1.4 129* 3.0 1.8 167
SANDSTONE RS 8150 -M .1 * 1.4 1.2 117
WHISKEY PARK 8950 .4 .7 57* 2.7 1.6 169
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Basin wide percent of average 80* 154
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .7 .5 140* 1.7 1.0 170
BLIND BULL SUM 8650 .6 .6 100* 2.1 1.1 191
EAST RIM DIVIDE 7930 .2 .1 200* 1.9 .7 271
ELKHART PARK G.S. 9400 .7 .3 233* 2.6 1.1 236
GROS VENTRE SUMMIT 8750 .3 .7 43* 1.8 1.0 180
GUNSIGHT PASS 9820 .8 -M * 2.1 -M *
KENDALL R.S. 7740 .1 .1 100* 2.1 .8 263
LOOMIS PARK 8240 .0 .3 0* 2.3 .9 256
NEW FORK LAKE 8340 .2 .1 200* 2.4 .8 300
POCKET CREEK 9360 1.1 -M * 2.5 -M *
SNIDER BASIN 8060 .0 .2 0* 1.6 .7 229
SPRING CREEK DIVIDE 9000 1.2 .5 240* 3.1 1.2 258
TRIPLE PEAK 8500 .1 .4 25* 2.8 1.1 255
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Basin wide percent of average 108* 235
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 * 2.3 .7 329
HEWINTA 9519 -M .5 * 2.7 1.3 208
HICKERSON PARK 9145 -M .1 * -M .9 *
HOLE-IN-ROCK 9150 .3 .1 300* 2.8 1.0 280
INDIAN CREEK 9425 1.9 .5 380* 2.9 1.2 242
KELLEY R.S. 8180 .4 .3 133* 2.8 1.1 255
STEEL CREEK PARK 10200 -M .9 * -M 1.2 *
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Basin wide percent of average 300* 255
UPPER BEAR RIVER
BUG LAKE 7950 -M .6 * -M 1.3 *
HAYDEN FORK 9212 .1 .4 25* 3.8 1.3 292
KELLEY R.S. 8180 .4 .3 133* 2.8 1.1 255
LILY LAKE 9156 .0 .5 0* 2.7 1.3 208
MONTE CRISTO 8960 -M .8 * -M 1.5 *
SALT RIVER SUMMIT 7760 -M .0 * -M 1.0 *
TRIAL LAKE 9992 .8 1.0 80* 2.4 1.4 171
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Basin wide percent of average 59* 229
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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.