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 19 , 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 .2 0* 3.2 1.1 291
COTTONWOOD CREEK 7670 .0 .3 0* 4.3 1.6 269
GRAND TARGHEE 9260 2.4 -M * 4.8 -M *
GRANITE CREEK 6770 .0 .1 0* 2.3 .9 256
GRASSY LAKE 7265 .0 .5 0* 5.0 1.8 278
GROS VENTRE SUMMIT 8750 .4 .7 57* 1.9 1.1 173
GUNSIGHT PASS 9820 .8 -M * 2.3 -M *
LEWIS LAKE DIVIDE 7850 .2 .3 67* 4.0 1.6 250
PHILLIPS BENCH 8200 .0 .5 0* 2.4 1.2 200
SALT RIVER SUMMIT 7760 .0 .0 100* 2.2 1.1 200
SNAKE RIVER STATION 6920 .0 .1 0* 3.3 1.3 254
SPRING CREEK DIVIDE 9000 1.2 .6 200* 3.2 1.3 246
THUMB DIVIDE 7980 .0 .3 0* 2.3 1.2 192
TOGWOTEE PASS 9580 1.4 1.4 100* 2.8 1.5 187
TWO OCEAN PLATEAU 9240 3.0 1.6 188* 3.4 1.7 200
WILLOW CREEK 8380 .2 .7 29* 4.9 2.1 233
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Basin wide percent of average 88* 232
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 1.2 1.6 75* 2.0 1.2 167
BLACK BEAR 8170 1.7 1.0 170* 4.6 1.8 256
CANYON 7870 .0 .3 0* 1.3 1.0 130
FISHER CREEK 9100 1.4 1.2 117* 3.4 1.8 189
MADISON PLATEAU 7750 .0 .6 0* 3.6 1.4 257
NORTHEAST ENTRANCE 7350 .0 .1 0* 1.6 .9 178
PARKER PEAK 9400 .7 1.7 41* 2.0 1.4 143
SYLVAN LAKE 8420 .1 1.0 10* 3.5 1.5 233
THUMB DIVIDE 7980 .0 .3 0* 2.3 1.2 192
TWO OCEAN PLATEAU 9240 3.0 1.6 188* 3.4 1.7 200
WHISKEY CREEK 6800 .0 .2 0* 3.0 1.2 250
WHITE MILL 8700 .8 .9 89* 2.7 1.5 180
WOLVERINE 7650 .0 .2 0* 1.5 1.1 136
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Basin wide percent of average 83* 197
WIND RIVER
BURROUGHS CREEK 8750 .0 .4 0* 1.2 .9 133
CASTLE CREEK 8400 .0 -M * 1.1 -M *
COLD SPRINGS 9630 .0 .5 0* 1.5 1.1 136
DEER PARK 9700 .9 1.0 90* 2.4 1.3 185
HOBBS PARK 10100 1.5 1.3 115* 2.3 1.2 192
LITTLE WARM 9370 .0 .6 0* 1.5 1.0 150
SOUTH PASS 9040 .7 .6 117* 2.1 1.1 191
ST. LAWRENCE ALT 8620 .0 .4 0* 1.0 1.0 100
TOGWOTEE PASS 9580 1.4 1.4 100* 2.8 1.5 187
TOWNSEND CREEK 8700 .0 .6 0* 2.3 1.3 177
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Basin wide percent of average 66* 164
BIGHORN BASIN
BALD MTN. 9380 2.9 1.8 161* 3.1 1.5 207
BEAR TRAP MEADOW 8200 .0 .4 0* 1.6 1.1 145
BLACKWATER 9780 2.5 2.0 125* 2.9 1.5 193
BONE SPRINGS DIV 9350 3.1 1.6 194* 3.6 1.6 225
EVENING STAR 9200 .3 1.5 20* 2.8 1.5 187
GRAVE SPRINGS 8550 .0 .7 0* 1.8 1.4 129
KIRWIN 9550 1.6 1.1 145* 2.6 1.0 260
MARQUETTE 8760 .3 -M * 3.2 1.4 229
MIDDLE POWDER 7760 .9 .9 100* 3.8 1.6 238
OWL CREEK 8975 .8 .6 133 1.4 .7 200
POWDER RIVER PASS 9480 1.7 .7 243* 2.7 1.2 225
SHELL CREEK 9580 3.6 1.8 200 3.4 1.2 283
SYLVAN LAKE 8420 .1 1.0 10* 3.5 1.5 233
SYLVAN ROAD 7120 .0 .2 0* 1.8 1.0 180
TIMBER CREEK 7950 .0 .7 0 3.5 .9 389
YOUNTS PEAK 8350 .0 .7 0* 2.2 1.1 200
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Basin wide percent of average 111* 217
SHOSHONE RIVER
BLACKWATER 9780 2.5 2.0 125* 2.9 1.5 193
EVENING STAR 9200 .3 1.5 20* 2.8 1.5 187
KIRWIN 9550 1.6 1.1 145* 2.6 1.0 260
MARQUETTE 8760 .3 -M * 3.2 1.4 229
SYLVAN LAKE 8420 .1 1.0 10* 3.5 1.5 233
SYLVAN ROAD 7120 .0 .2 0* 1.8 1.0 180
YOUNTS PEAK 8350 .0 .7 0* 2.2 1.1 200
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Basin wide percent of average 69* 211
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .4 0* 1.6 1.1 145
BIG GOOSE 7990 1.3 .5 260* 3.9 1.4 279
BONE SPRINGS DIV 9350 3.1 1.6 194* 3.6 1.6 225
BURGESS JUNCTION 7880 1.3 .9 144* 3.6 1.4 257
CLOUD PEAK RESERVOIR 9860 1.5 .8 188* 3.3 1.6 206
DOME LAKE 8880 2.3 1.1 209* 4.1 1.5 273
GRAVE SPRINGS 8550 .0 .7 0* 1.8 1.4 129
HANSEN SAWMILL 8360 .0 .4 0* 1.5 1.1 136
LITTLE GOOSE 8870 1.6 -M * 4.3 -M *
MIDDLE POWDER 7760 .9 .9 100* 3.8 1.6 238
POWDER RIVER PASS 9480 1.7 .7 243* 2.7 1.2 225
SOLDIER PARK 8720 .0 -M * 2.3 -M *
SUCKER CREEK 8880 2.3 .8 288* 3.6 1.5 240
TIE CREEK 6870 .0 .4 0* 4.1 1.6 256
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Basin wide percent of average 157* 221
BELLE FOURCHE
BLIND PARK 6890 .0 .2 0* 1.0 1.5 67
COLE CANYON 5910 .0 .4 0* 1.2 1.1 109
NORTH RAPID CREEK 6130 .0 .2 0* .5 1.5 33
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Basin wide percent of average 0* 66
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 1.5 -M * 3.1 -M *
CINNABAR PARK 9574 .4 .5 80* 2.5 1.3 192
COLUMBINE 9160 .0 .1 0* 1.9 1.2 158
DIVIDE PEAK 8880 .1 .9 11* 2.5 1.6 156
ELK RIVER 8700 .0 .2 0* 1.9 1.3 146
JOE WRIGHT 10120 .0 1.2 0* 2.3 2.0 115
NORTH FRENCH CREEK 10130 1.7 1.8 94* 3.1 1.8 172
OLD BATTLE 10000 1.7 1.5 113* 2.9 1.9 153
SAGE CREEK BASIN 7850 .0 .5 0* 1.6 .9 178
SOUTH BRUSH CREEK 8440 .1 .3 33* 2.2 1.5 147
TOWER 10500 .6 1.4 43* 2.6 2.0 130
WEBBER SPRINGS 9250 .3 .8 38* 2.7 1.7 159
WILLOW CREEK PASS 9540 .3 .5 60* 5.3 1.1 482
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Basin wide percent of average 54* 172
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .4 1.1 36* 2.5 1.3 192
CASPER MTN. 7900 2.0 .9 222* 4.6 1.4 329
DEADMAN HILL 10220 .8 1.2 67* 2.0 1.4 143
DEER PARK 9700 .9 1.0 90* 2.4 1.3 185
LAPRELE CREEK 8375 .0 .4 0* 1.8 1.0 180
RENO HILL 8400 1.5 1.0 150* 3.1 1.4 221
ROACH 9700 .8 .4 200* 2.2 1.3 169
SAND LAKE 10050 2.2 1.7 129* 3.0 1.7 176
SOUTH PASS 9040 .7 .6 117* 2.1 1.1 191
WINDY PEAK 7900 .0 .2 0* 1.2 1.0 120
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Basin wide percent of average 109* 193
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 .1 100* 1.3 1.0 130
DIVIDE PEAK 8880 .1 .9 11* 2.5 1.6 156
OLD BATTLE 10000 1.7 1.5 113* 2.9 1.9 153
SANDSTONE RS 8150 -M .2 * 1.4 1.3 108
WHISKEY PARK 8950 .4 .8 50* 2.7 1.7 159
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Basin wide percent of average 70* 144
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .6 .6 100* 1.8 1.0 180
BLIND BULL SUM 8650 .7 .6 117* 2.1 1.2 175
EAST RIM DIVIDE 7930 .2 .2 100* 1.9 .8 238
ELKHART PARK G.S. 9400 .7 .3 233* 2.6 1.1 236
GROS VENTRE SUMMIT 8750 .4 .7 57* 1.9 1.1 173
GUNSIGHT PASS 9820 .8 -M * 2.3 -M *
KENDALL R.S. 7740 .0 .1 0* 2.1 .9 233
LOOMIS PARK 8240 .0 .3 0* 2.3 1.0 230
NEW FORK LAKE 8340 .1 .1 100* 2.4 .9 267
POCKET CREEK 9360 1.2 -M * 2.5 -M *
SNIDER BASIN 8060 .0 .3 0* 1.6 .8 200
SPRING CREEK DIVIDE 9000 1.2 .6 200* 3.2 1.3 246
TRIPLE PEAK 8500 .3 .4 75* 2.7 1.2 225
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Basin wide percent of average 100* 218
LOWER GREEN RIVER
HAMS FORK 7840 .1 .1 100* 2.3 .8 288
HEWINTA 9519 -M .5 * 2.7 1.4 193
HICKERSON PARK 9145 -M .1 * -M 1.0 *
HOLE-IN-ROCK 9150 .0 .1 0* 2.8 1.0 280
INDIAN CREEK 9425 1.8 .6 300* 3.1 1.3 238
KELLEY R.S. 8180 .4 .3 133* 2.8 1.1 255
STEEL CREEK PARK 10200 1.8 .9 200* 3.3 1.3 254
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Basin wide percent of average 205* 246
UPPER BEAR RIVER
BUG LAKE 7950 .0 .6 0* 1.4 1.3 108
HAYDEN FORK 9212 .1 .5 20* 3.9 1.4 279
KELLEY R.S. 8180 .4 .3 133* 2.8 1.1 255
LILY LAKE 9156 .0 .6 0* 2.8 1.4 200
MONTE CRISTO 8960 .1 .9 11* 2.4 1.6 150
SALT RIVER SUMMIT 7760 .0 .0 100* 2.2 1.1 200
TRIAL LAKE 9992 .7 1.0 70* -M 1.5 *
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Basin wide percent of average 33* 196
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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.