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 SUNDAY: OCTOBER 23 , 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 .1 .3 33* 3.2 1.4 229
COTTONWOOD CREEK 7670 .0 .4 0* 4.4 2.0 220
GRAND TARGHEE 9260 2.6 -M * 5.1 -M *
GRANITE CREEK 6770 .1 .2 50* 2.4 1.2 200
GRASSY LAKE 7265 .1 .7 14* 5.2 2.3 226
GROS VENTRE SUMMIT 8750 .4 .9 44* 2.0 1.3 154
GUNSIGHT PASS 9820 .9 -M * 2.5 -M *
LEWIS LAKE DIVIDE 7850 .2 .5 40* 4.3 2.1 205
PHILLIPS BENCH 8200 .0 .7 0* 2.6 1.6 163
SALT RIVER SUMMIT 7760 .0 .1 0* 2.2 1.3 169
SNAKE RIVER STATION 6920 .1 .2 50* 3.6 1.6 225
SPRING CREEK DIVIDE 9000 1.2 .8 150* 3.2 1.6 200
THUMB DIVIDE 7980 .0 .4 0* 2.6 1.5 173
TOGWOTEE PASS 9580 1.5 1.7 88* 2.9 1.9 153
TWO OCEAN PLATEAU 9240 3.4 2.0 170* 3.8 2.1 181
WILLOW CREEK 8380 .0 1.0 0* 4.9 2.6 188
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Basin wide percent of average 72* 193
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 1.6 1.9 84* 2.4 1.5 160
BLACK BEAR 8170 1.8 1.5 120* 4.9 2.3 213
CANYON 7870 .0 .3 0* 1.7 1.2 142
FISHER CREEK 9100 1.7 1.7 100* 3.7 2.2 168
MADISON PLATEAU 7750 .0 .8 0* 3.7 1.8 206
NORTHEAST ENTRANCE 7350 .0 .1 0* 1.8 1.1 164
PARKER PEAK 9400 .7 2.0 35* 2.3 1.7 135
SYLVAN LAKE 8420 .1 1.2 8* 3.8 1.8 211
THUMB DIVIDE 7980 .0 .4 0* 2.6 1.5 173
TWO OCEAN PLATEAU 9240 3.4 2.0 170* 3.8 2.1 181
WHISKEY CREEK 6800 .1 .3 33* 3.4 1.5 227
WHITE MILL 8700 1.0 1.2 83* 3.1 1.9 163
WOLVERINE 7650 .0 .3 0* 1.8 1.3 138
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Basin wide percent of average 76* 178
WIND RIVER
BURROUGHS CREEK 8750 .2 .5 40* 1.4 1.1 127
CASTLE CREEK 8400 .2 -M * 1.2 -M *
COLD SPRINGS 9630 .1 .7 14* 1.6 1.3 123
DEER PARK 9700 .9 1.1 82* 2.3 1.8 128
HOBBS PARK 10100 1.6 1.7 94* 2.4 1.5 160
LITTLE WARM 9370 .0 .7 0* 1.7 1.2 142
SOUTH PASS 9040 .6 1.0 60* 2.1 1.4 150
ST. LAWRENCE ALT 8620 .0 .6 0* 1.1 1.2 92
TOGWOTEE PASS 9580 1.5 1.7 88* 2.9 1.9 153
TOWNSEND CREEK 8700 .2 .7 29* 2.4 1.6 150
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Basin wide percent of average 59* 138
BIGHORN BASIN
BALD MTN. 9380 3.0 2.0 150* 3.3 1.8 183
BEAR TRAP MEADOW 8200 .4 .5 80* 1.8 1.3 138
BLACKWATER 9780 2.8 2.3 122* 3.2 1.9 168
BONE SPRINGS DIV 9350 3.3 1.9 174 4.1 1.9 216
EVENING STAR 9200 .9 1.8 50* 3.3 1.9 174
GRAVE SPRINGS 8550 .4 .8 50* 1.8 1.6 113
KIRWIN 9550 1.7 1.3 131 2.8 1.3 215
MARQUETTE 8760 .2 -M * 3.3 1.7 194
MIDDLE POWDER 7760 .6 1.0 60* 4.0 1.9 211
OWL CREEK 8975 .8 .7 114 1.5 .9 167
POWDER RIVER PASS 9480 1.7 .9 189* 2.8 1.4 200
SHELL CREEK 9580 3.9 2.1 186 3.4 1.5 227
SYLVAN LAKE 8420 .1 1.2 8* 3.8 1.8 211
SYLVAN ROAD 7120 .0 .2 0* 2.0 1.3 154
TIMBER CREEK 7950 .1 .6 17 3.5 1.2 292
YOUNTS PEAK 8350 .2 .9 22* 2.5 1.3 192
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Basin wide percent of average 109* 191
SHOSHONE RIVER
BLACKWATER 9780 2.8 2.3 122* 3.2 1.9 168
EVENING STAR 9200 .9 1.8 50* 3.3 1.9 174
KIRWIN 9550 1.7 1.3 131 2.8 1.3 215
MARQUETTE 8760 .2 -M * 3.3 1.7 194
SYLVAN LAKE 8420 .1 1.2 8* 3.8 1.8 211
SYLVAN ROAD 7120 .0 .2 0* 2.0 1.3 154
YOUNTS PEAK 8350 .2 .9 22* 2.5 1.3 192
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Basin wide percent of average 74* 187
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .4 .5 80* 1.8 1.3 138
BIG GOOSE 7990 1.2 .6 200* 4.0 1.6 250
BONE SPRINGS DIV 9350 3.3 1.9 174 4.1 1.9 216
BURGESS JUNCTION 7880 1.2 1.0 120* 3.9 1.7 229
CLOUD PEAK RESERVOIR 9860 1.6 1.1 145* 3.6 2.0 180
DOME LAKE 8880 2.0 1.3 154* 4.2 1.9 221
GRAVE SPRINGS 8550 .4 .8 50* 1.8 1.6 113
HANSEN SAWMILL 8360 .0 .5 0* 1.7 1.4 121
LITTLE GOOSE 8870 1.3 -M * 4.4 -M *
MIDDLE POWDER 7760 .6 1.0 60* 4.0 1.9 211
POWDER RIVER PASS 9480 1.7 .9 189* 2.8 1.4 200
SOLDIER PARK 8720 .0 -M * 2.4 -M *
SUCKER CREEK 8880 2.3 .9 256* 3.9 1.8 217
TIE CREEK 6870 .1 .4 25* 4.2 1.9 221
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Basin wide percent of average 136* 196
BELLE FOURCHE
BLIND PARK 6890 .1 .2 50* 1.0 1.9 53
COLE CANYON 5910 .0 .6 0* 1.3 1.4 93
NORTH RAPID CREEK 6130 .1 .3 33* .7 1.9 37
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Basin wide percent of average 18* 58
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 1.6 -M * 3.2 -M *
CINNABAR PARK 9574 .4 .8 50* 2.5 1.6 156
COLUMBINE 9160 .0 .2 0* 2.0 1.6 125
DIVIDE PEAK 8880 .1 1.2 8* 2.5 2.0 125
ELK RIVER 8700 .0 .3 0* 2.0 1.6 125
JOE WRIGHT 10120 -M 1.6 * -M 2.4 *
NORTH FRENCH CREEK 10130 1.8 2.2 82* 3.2 2.3 139
OLD BATTLE 10000 1.7 1.9 89* 3.1 2.5 124
SAGE CREEK BASIN 7850 .0 .7 0* 1.7 1.1 155
SOUTH BRUSH CREEK 8440 .1 .4 25* 2.3 1.9 121
TOWER 10500 .7 2.0 35* 2.8 2.6 108
WEBBER SPRINGS 9250 .1 1.1 9* 2.7 2.1 129
WILLOW CREEK PASS 9540 1.5 .7 214* -M 1.4 *
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Basin wide percent of average 56* 128
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .3 1.4 21* 2.5 1.7 147
CASPER MTN. 7900 1.6 1.1 145* 4.9 1.8 272
DEADMAN HILL 10220 1.0 1.5 67* 2.0 1.8 111
DEER PARK 9700 .9 1.1 82* 2.3 1.8 128
LAPRELE CREEK 8375 .0 .6 0* 1.9 1.3 146
RENO HILL 8400 1.5 1.2 125* 3.2 1.8 178
ROACH 9700 .6 .6 100* 2.2 1.7 129
SAND LAKE 10050 2.3 2.2 105* 3.0 2.1 143
SOUTH PASS 9040 .6 1.0 60* 2.1 1.4 150
WINDY PEAK 7900 .2 .3 67* 1.2 1.2 100
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Basin wide percent of average 82* 152
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .2 0* 1.4 1.3 108
DIVIDE PEAK 8880 .1 1.2 8* 2.5 2.0 125
OLD BATTLE 10000 1.7 1.9 89* 3.1 2.5 124
SANDSTONE RS 8150 .0 .3 0* 1.4 1.6 88
WHISKEY PARK 8950 .1 1.0 10* 2.8 2.1 133
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Basin wide percent of average 41* 118
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.0 .8 125* 1.9 1.3 146
BLIND BULL SUM 8650 .7 .9 78* 2.1 1.5 140
EAST RIM DIVIDE 7930 .2 .3 67* 2.1 .9 233
ELKHART PARK G.S. 9400 .8 .5 160* 2.7 1.4 193
GROS VENTRE SUMMIT 8750 .4 .9 44* 2.0 1.3 154
GUNSIGHT PASS 9820 .9 -M * 2.5 -M *
KENDALL R.S. 7740 .1 .3 33* 2.2 1.1 200
LOOMIS PARK 8240 .1 .5 20* 2.5 1.2 208
NEW FORK LAKE 8340 .1 .2 50* 2.6 1.1 236
POCKET CREEK 9360 1.4 -M * 2.6 -M *
SNIDER BASIN 8060 .1 .4 25* 1.7 1.0 170
SPRING CREEK DIVIDE 9000 1.2 .8 150* 3.2 1.6 200
TRIPLE PEAK 8500 .2 .6 33* 2.9 1.5 193
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Basin wide percent of average 79* 186
LOWER GREEN RIVER
HAMS FORK 7840 .1 .2 50* 2.6 1.0 260
HEWINTA 9519 .0 .6 0* 2.7 1.7 159
HICKERSON PARK 9145 -M .2 * -M 1.2 *
HOLE-IN-ROCK 9150 .2 .2 100* 2.9 1.2 242
INDIAN CREEK 9425 1.8 .8 225* 3.2 1.7 188
KELLEY R.S. 8180 .2 .5 40* 2.9 1.4 207
STEEL CREEK PARK 10200 1.4 1.2 117* 3.3 1.7 194
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Basin wide percent of average 106* 202
UPPER BEAR RIVER
BUG LAKE 7950 .1 .8 13* 1.5 1.7 88
HAYDEN FORK 9212 .1 .6 17* 3.9 1.7 229
KELLEY R.S. 8180 .2 .5 40* 2.9 1.4 207
LILY LAKE 9156 .0 .7 0* 2.7 1.7 159
MONTE CRISTO 8960 .1 1.1 9* 2.4 2.0 120
SALT RIVER SUMMIT 7760 .0 .1 0* 2.2 1.3 169
TRIAL LAKE 9992 .5 1.3 38* 2.4 1.9 126
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Basin wide percent of average 20* 154
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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.