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 SATURDAY: OCTOBER 22 , 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 .2 50* 3.2 1.3 246
COTTONWOOD CREEK 7670 .0 .4 0* 4.3 1.9 226
GRAND TARGHEE 9260 2.6 -M * 5.1 -M *
GRANITE CREEK 6770 .1 .2 50* 2.4 1.1 218
GRASSY LAKE 7265 .1 .7 14* 5.2 2.1 248
GROS VENTRE SUMMIT 8750 .4 .9 44* 2.2 1.3 169
GUNSIGHT PASS 9820 .9 -M * 2.5 -M *
LEWIS LAKE DIVIDE 7850 .3 .4 75* 4.3 1.9 226
PHILLIPS BENCH 8200 .0 .7 0* 2.6 1.5 173
SALT RIVER SUMMIT 7760 .1 .1 100* 2.2 1.3 169
SNAKE RIVER STATION 6920 .1 .2 50* 3.6 1.5 240
SPRING CREEK DIVIDE 9000 1.3 .8 163* 3.2 1.5 213
THUMB DIVIDE 7980 .0 .4 0* 2.6 1.4 186
TOGWOTEE PASS 9580 1.5 1.6 94* 2.9 1.8 161
TWO OCEAN PLATEAU 9240 3.4 1.9 179* 3.8 2.0 190
WILLOW CREEK 8380 .0 .9 0* 4.9 2.5 196
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Basin wide percent of average 79* 205
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 1.6 1.8 89* 2.3 1.4 164
BLACK BEAR 8170 1.9 1.2 158* 4.8 2.1 229
CANYON 7870 .0 .3 0* 1.6 1.1 145
FISHER CREEK 9100 1.7 1.5 113* 3.7 2.1 176
MADISON PLATEAU 7750 .0 .7 0* 3.7 1.7 218
NORTHEAST ENTRANCE 7350 .0 .1 0* 1.7 1.0 170
PARKER PEAK 9400 .7 1.9 37* 2.2 1.6 138
SYLVAN LAKE 8420 .2 1.1 18* 3.7 1.7 218
THUMB DIVIDE 7980 .0 .4 0* 2.6 1.4 186
TWO OCEAN PLATEAU 9240 3.4 1.9 179* 3.8 2.0 190
WHISKEY CREEK 6800 .1 .2 50* 3.3 1.4 236
WHITE MILL 8700 1.0 1.1 91* 3.0 1.8 167
WOLVERINE 7650 .0 .2 0* 1.8 1.3 138
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Basin wide percent of average 85* 185
WIND RIVER
BURROUGHS CREEK 8750 .2 .5 40* 1.4 1.1 127
CASTLE CREEK 8400 .1 -M * 1.2 -M *
COLD SPRINGS 9630 .1 .6 17* 1.6 1.3 123
DEER PARK 9700 .9 1.1 82* 2.3 1.7 135
HOBBS PARK 10100 1.6 1.5 107* 2.4 1.5 160
LITTLE WARM 9370 .0 .7 0* 1.7 1.2 142
SOUTH PASS 9040 .7 .8 88* 2.2 1.3 169
ST. LAWRENCE ALT 8620 .0 .5 0* 1.1 1.2 92
TOGWOTEE PASS 9580 1.5 1.6 94* 2.9 1.8 161
TOWNSEND CREEK 8700 .2 .6 33* 2.5 1.5 167
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Basin wide percent of average 66* 144
BIGHORN BASIN
BALD MTN. 9380 3.0 2.0 150* 3.3 1.7 194
BEAR TRAP MEADOW 8200 .5 .4 125* 1.7 1.2 142
BLACKWATER 9780 2.9 2.2 132* 3.2 1.8 178
BONE SPRINGS DIV 9350 3.2 1.9 168 3.9 1.8 217
EVENING STAR 9200 .9 1.6 56* 3.3 1.8 183
GRAVE SPRINGS 8550 .4 .7 57* 1.9 1.5 127
KIRWIN 9550 1.6 1.3 123 2.8 1.2 233
MARQUETTE 8760 .2 -M * 3.2 1.6 200
MIDDLE POWDER 7760 .8 1.0 80* 3.9 1.8 217
OWL CREEK 8975 .8 .6 133 1.5 .8 188
POWDER RIVER PASS 9480 1.7 .8 213* 2.8 1.4 200
SHELL CREEK 9580 3.8 2.0 190 3.5 1.4 250
SYLVAN LAKE 8420 .2 1.1 18* 3.7 1.7 218
SYLVAN ROAD 7120 .0 .2 0* 2.0 1.2 167
TIMBER CREEK 7950 .1 .6 17 3.5 1.1 318
YOUNTS PEAK 8350 .4 .9 44* 2.4 1.3 185
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Basin wide percent of average 117* 200
SHOSHONE RIVER
BLACKWATER 9780 2.9 2.2 132* 3.2 1.8 178
EVENING STAR 9200 .9 1.6 56* 3.3 1.8 183
KIRWIN 9550 1.6 1.3 123 2.8 1.2 233
MARQUETTE 8760 .2 -M * 3.2 1.6 200
SYLVAN LAKE 8420 .2 1.1 18* 3.7 1.7 218
SYLVAN ROAD 7120 .0 .2 0* 2.0 1.2 167
YOUNTS PEAK 8350 .4 .9 44* 2.4 1.3 185
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Basin wide percent of average 82* 194
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .5 .4 125* 1.7 1.2 142
BIG GOOSE 7990 1.3 .5 260* 4.0 1.6 250
BONE SPRINGS DIV 9350 3.2 1.9 168 3.9 1.8 217
BURGESS JUNCTION 7880 1.2 1.0 120* 3.9 1.6 244
CLOUD PEAK RESERVOIR 9860 1.5 1.0 150* 3.5 1.9 184
DOME LAKE 8880 2.1 1.2 175* 4.2 1.8 233
GRAVE SPRINGS 8550 .4 .7 57* 1.9 1.5 127
HANSEN SAWMILL 8360 .0 .4 0* 1.6 1.3 123
LITTLE GOOSE 8870 1.4 -M * 4.4 -M *
MIDDLE POWDER 7760 .8 1.0 80* 3.9 1.8 217
POWDER RIVER PASS 9480 1.7 .8 213* 2.8 1.4 200
SOLDIER PARK 8720 .0 -M * 2.4 -M *
SUCKER CREEK 8880 2.4 .8 300* 3.9 1.7 229
TIE CREEK 6870 .1 .3 33* 4.2 1.9 221
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Basin wide percent of average 152* 203
BELLE FOURCHE
BLIND PARK 6890 .1 .1 100* 1.0 1.8 56
COLE CANYON 5910 .0 .6 0* 1.3 1.3 100
NORTH RAPID CREEK 6130 .1 .3 33* .7 1.8 39
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Basin wide percent of average 20* 61
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 1.7 -M * 3.3 -M *
CINNABAR PARK 9574 .4 .7 57* 2.5 1.5 167
COLUMBINE 9160 .1 .2 50* 2.2 1.5 147
DIVIDE PEAK 8880 .1 1.1 9* 2.5 1.9 132
ELK RIVER 8700 .0 .3 0* 2.1 1.5 140
JOE WRIGHT 10120 .4 1.5 27* 2.4 2.3 104
NORTH FRENCH CREEK 10130 1.8 2.1 86* 3.2 2.2 145
OLD BATTLE 10000 1.7 1.8 94* 3.1 2.3 135
SAGE CREEK BASIN 7850 .1 .6 17* 1.6 1.1 145
SOUTH BRUSH CREEK 8440 .1 .3 33* 2.3 1.8 128
TOWER 10500 .7 1.8 39* 2.9 2.5 116
WEBBER SPRINGS 9250 .1 1.0 10* 2.7 2.0 135
WILLOW CREEK PASS 9540 1.4 .6 233* -M 1.4 *
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Basin wide percent of average 58* 133
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .4 1.4 29* 2.5 1.6 156
CASPER MTN. 7900 1.7 1.1 155* 4.9 1.7 288
DEADMAN HILL 10220 1.0 1.4 71* 2.0 1.7 118
DEER PARK 9700 .9 1.1 82* 2.3 1.7 135
LAPRELE CREEK 8375 .0 .5 0* 1.9 1.3 146
RENO HILL 8400 1.5 1.1 136* 3.2 1.7 188
ROACH 9700 .7 .6 117* 2.2 1.6 138
SAND LAKE 10050 2.3 2.0 115* 3.0 2.0 150
SOUTH PASS 9040 .7 .8 88* 2.2 1.3 169
WINDY PEAK 7900 .2 .2 100* 1.2 1.2 100
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Basin wide percent of average 92* 161
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .2 0* 1.4 1.3 108
DIVIDE PEAK 8880 .1 1.1 9* 2.5 1.9 132
OLD BATTLE 10000 1.7 1.8 94* 3.1 2.3 135
SANDSTONE RS 8150 .0 .2 0* 1.4 1.6 88
WHISKEY PARK 8950 .1 .9 11* 2.8 2.0 140
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Basin wide percent of average 45* 123
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .9 .7 129* 1.9 1.2 158
BLIND BULL SUM 8650 .7 .8 88* 2.1 1.4 150
EAST RIM DIVIDE 7930 .3 .2 150* 2.1 .9 233
ELKHART PARK G.S. 9400 .8 .5 160* 2.7 1.3 208
GROS VENTRE SUMMIT 8750 .4 .9 44* 2.2 1.3 169
GUNSIGHT PASS 9820 .9 -M * 2.5 -M *
KENDALL R.S. 7740 .2 .3 67* 2.3 1.0 230
LOOMIS PARK 8240 .1 .5 20* 2.5 1.2 208
NEW FORK LAKE 8340 .1 .2 50* 2.5 1.0 250
POCKET CREEK 9360 1.4 -M * 2.6 -M *
SNIDER BASIN 8060 .1 .3 33* 1.7 1.0 170
SPRING CREEK DIVIDE 9000 1.3 .8 163* 3.2 1.5 213
TRIPLE PEAK 8500 .3 .5 60* 2.9 1.4 207
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Basin wide percent of average 91* 198
LOWER GREEN RIVER
HAMS FORK 7840 .1 .1 100* 2.4 .9 267
HEWINTA 9519 .0 .6 0* 2.7 1.6 169
HICKERSON PARK 9145 -M .2 * -M 1.2 *
HOLE-IN-ROCK 9150 .3 .2 150* 2.9 1.2 242
INDIAN CREEK 9425 1.8 .8 225* 3.3 1.6 206
KELLEY R.S. 8180 .3 .5 60* 3.0 1.4 214
STEEL CREEK PARK 10200 1.7 1.1 155* 3.2 1.6 200
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Basin wide percent of average 127* 211
UPPER BEAR RIVER
BUG LAKE 7950 .1 .8 13* 1.5 1.6 94
HAYDEN FORK 9212 .1 .5 20* 3.9 1.6 244
KELLEY R.S. 8180 .3 .5 60* 3.0 1.4 214
LILY LAKE 9156 .0 .6 0* 2.7 1.6 169
MONTE CRISTO 8960 .1 1.0 10* 2.3 1.9 121
SALT RIVER SUMMIT 7760 .1 .1 100* 2.2 1.3 169
TRIAL LAKE 9992 .5 1.2 42* 2.3 1.8 128
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Basin wide percent of average 26* 160
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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.