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 12 , 2013
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 .0 .0 * .9 .7 129
BLACK BEAR 8170 1.3 .5 260* 1.5 1.4 107
BLIND BULL SUM 8650 .1 .1 100* .7 .7 100
COTTONWOOD CREEK 7670 .5 .0 * 1.0 .9 111
EAST RIM DIVIDE 7930 .0 .0 * .6 .5 120
GRAND TARGHEE 9260 1.6 1.2 133* 1.7 2.2 77
GRANITE CREEK 6770 .0 .0 * .5 .6 83
GRASSY LAKE 7265 .1 .0 * .8 1.2 67
GROS VENTRE SUMMIT 8750 1.2 .3 400* 1.1 .6 183
GUNSIGHT PASS 9820 1.5 .0 * 1.6 .9 178
LEWIS LAKE DIVIDE 7850 .0 .0 * .7 1.0 70
PHILLIPS BENCH 8200 .0 .0 * .8 .7 114
SALT RIVER SUMMIT 7760 .0 .0 * .9 .6 150
SNAKE RIVER STATION 6920 .2 .0 * .7 .9 78
SPRING CREEK DIVIDE 9000 .0 .0 * .5 .7 71
THUMB DIVIDE 7980 .0 .0 * .6 .9 67
TOGWOTEE PASS 9580 2.7 .7 386* 1.5 .9 167
TWO OCEAN PLATEAU 9240 2.3 .9 256* 1.4 1.0 140
WILLOW CREEK 8380 .0 .0 * 1.6 1.2 133
YOUNTS PEAK 8350 -M .4 * -M .8 *
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Basin Index (%) 311* 109
MADISON-GALLATIN
BLACK BEAR 8170 1.3 .5 260* 1.5 1.4 107
CANYON 7870 .7 .0 * 1.2 .7 171
MADISON PLATEAU 7750 .0 .3 0* 1.2 1.0 120
WEST YELLOWSTONE 6700 .0 .0 * .7 .8 88
WHISKEY CREEK 6800 .0 .0 * .7 .9 78
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Basin Index (%) 250* 110
YELLOWSTONE
BEARTOOTH LAKE 9360 1.7 .9 189* .5 .8 62
BURNT MTN 5880 .9 .0 * 3.1 2.1 148
CANYON 7870 .7 .0 * 1.2 .7 171
COLE CREEK 7850 2.3 .8 288* 2.0 1.4 143
EVENING STAR 9200 2.1 .6 350* 1.4 1.2 117
FISHER CREEK 9100 2.3 .7 329* .8 1.2 67
NORTHEAST ENTRANCE 7350 .1 .0 * .4 .7 57
PARKER PEAK 9400 2.0 .8 250* 1.1 1.1 100
SYLVAN LAKE 8420 .5 .3 167* 1.4 1.1 127
THUMB DIVIDE 7980 .0 .0 * .6 .9 67
TWO OCEAN PLATEAU 9240 2.3 .9 256* 1.4 1.0 140
WHITE MILL 8700 1.3 .6 217* .7 1.0 70
WOLVERINE 7650 .0 .0 * .5 .8 62
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Basin Index (%) 289* 108
WIND RIVER
BURROUGHS CREEK 8750 -M .0 * -M .7 *
CASTLE CREEK 8400 .0 -M * 1.1 -M *
COLD SPRINGS 9630 1.3 .0 * 2.3 .8 288
DEER PARK 9700 1.8 .5 360* 2.0 1.2 167
HOBBS PARK 10100 2.4 .4 600* 2.2 .9 244
KIRWIN 9550 2.3 .4 575* 1.5 .8 188
LITTLE WARM 9370 1.8 .2 900* 2.1 .7 300
OWL CREEK 8975 .9 .0 * 1.2 .6 200
SOUTH PASS 9040 1.2 .0 * 1.9 .8 238
ST. LAWRENCE ALT 8620 .3 .0 * 1.6 .7 229
TOGWOTEE PASS 9580 2.7 .7 386* 1.5 .9 167
TOWNSEND CREEK 8700 -M .0 * -M .9 *
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Basin Index (%) 668* 220
BIGHORN BASIN
BALD MTN. 9380 2.5 1.4 179* 1.4 1.2 117
BEAR TRAP MEADOW 8200 1.4 .0 * 2.3 .7 329
BONE SPRINGS DIV 9350 1.7 1.0 170* 1.3 1.2 108
GRAVE SPRINGS 8550 2.2 .0 * 2.7 1.0 270
KIRWIN 9550 2.3 .4 575* 1.5 .8 188
MARQUETTE 8760 2.6 -M * 3.2 -M *
MIDDLE POWDER 7760 3.2 .2 1600* 3.0 1.0 300
OWL CREEK 8975 .9 .0 * 1.2 .6 200
POWDER RIVER PASS 9480 1.9 .1 1900* 1.9 .9 211
SHELL CREEK 9580 2.7 1.3 208* 1.7 1.1 155
TIMBER CREEK 7950 1.1 .0 * 2.3 1.0 230
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Basin Index (%) 452* 203
SHOSHONE RIVER
BLACKWATER 9780 3.7 .9 411* 1.7 1.1 155
EVENING STAR 9200 2.1 .6 350* 1.4 1.2 117
MARQUETTE 8760 2.6 -M * 3.2 -M *
SYLVAN ROAD 7120 .0 .0 * 1.4 .9 156
YOUNTS PEAK 8350 -M .4 * -M .8 *
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Basin Index (%) 387* 141
POWDER RIVER
BEAR TRAP MEADOW 8200 1.4 .0 * 2.3 .7 329
CLOUD PEAK RESERVOIR 9860 2.5 .2 1250* 3.1 1.1 282
GRAVE SPRINGS 8550 2.2 .0 * 2.7 1.0 270
HANSEN SAWMILL 8360 1.7 .0 * 2.8 .8 350
MIDDLE POWDER 7760 3.2 .2 1600* 3.0 1.0 300
POWDER RIVER PASS 9480 1.9 .1 1900* 1.9 .9 211
SOLDIER PARK 8720 1.4 -M * 2.6 -M *
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Basin Index (%) 2580* 287
TONGUE RIVER
BIG GOOSE 7990 1.7 .0 * 2.6 1.1 236
BONE SPRINGS DIV 9350 1.7 1.0 170* 1.3 1.2 108
BURGESS JUNCTION 7880 1.3 .3 433* 2.0 1.0 200
DOME LAKE 8880 1.8 .5 360* 2.6 1.1 236
LITTLE GOOSE 8870 2.4 -M * 3.4 -M *
SUCKER CREEK 8880 2.1 .3 700* 2.6 1.1 236
TIE CREEK 6870 .7 .0 * 2.7 1.2 225
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Basin Index (%) 443* 206
BELLE FOURCHE
COLE CANYON 5910 -M .0 * -M 1.0 *
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Basin Index (%) * *
CHEYENNE RIVER BASIN
BLIND PARK 6890 -M .0 * -M 1.0 *
NORTH RAPID CREEK 6130 -M .0 * -M .9 *
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Basin Index (%) * *
UPPER N. PLATTE
ARAPAHO RIDGE 10960 1.5 .3 500* 2.1 1.1 191
BLACKHALL MTN 9820 1.7 -M * 2.7 -M *
COLUMBINE 9160 1.0 .0 * 2.2 1.1 200
DIVIDE PEAK 8880 1.7 .0 * 3.4 1.3 262
JOE WRIGHT 10120 .1 .2 50* 2.2 1.3 169
LAPRELE CREEK 8375 .4 .0 * 1.8 .7 257
MED BOW 10500 2.8 -M * 3.3 -M *
NORTH FRENCH CREEK 10130 -M .4 * -M 1.2 *
NEVER SUMMER 10280 1.3 .4 325* 1.8 -M *
OLD BATTLE 10000 2.4 .5 480* 2.6 1.6 162
RAWAH 9020 1.0 .0 * 2.8 .9 311
SAGE CREEK BASIN 7850 .9 .0 * 2.4 1.0 240
SAND LAKE 10050 2.5 .5 500* 2.8 1.2 233
SOUTH BRUSH CREEK 8440 1.6 .0 * -M 1.0 *
TOWER 10500 2.8 .8 350* 3.2 1.6 200
WEBBER SPRINGS 9250 .7 .0 * 2.2 1.3 169
WILLOW CREEK PASS 9540 1.0 .0 * 1.5 .7 214
ZIRKEL 9340 -M .0 * 1.9 1.8 106
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Basin Index (%) 700* 199
SWEETWATER
DEER PARK 9700 1.8 .5 360* 2.0 1.2 167
LARSEN CREEK 9000 .2 -M * 1.5 -M *
SOUTH PASS 9040 1.2 .0 * 1.9 .8 238
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Basin Index (%) 600* 195
LOWER N. PLATTE
CASPER MTN. 7900 -M .1 * -M 1.0 *
LAPRELE CREEK 8375 .4 .0 * 1.8 .7 257
RENO HILL 8400 -M .0 * -M 1.0 *
WINDY PEAK 7900 .2 .0 * 2.1 .7 300
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Basin Index (%) * 279
LARAMIE RIVER
BROOKLYN LAKE 10240 1.1 .0 * 1.5 .8 188
CINNABAR PARK 9574 1.3 .0 * 2.4 1.1 218
CROW CREEK 8330 .4 .0 * 1.8 .7 257
DEADMAN HILL 10220 1.0 .1 1000* 1.8 .9 200
RAWAH 9020 1.0 .0 * 2.8 .9 311
ROACH 9700 -M .0 * -M .9 *
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Basin Index (%) 4800* 234
S. PLATTE
BLACK MOUNTAIN 8920 .2 -M * 1.3 -M *
CROW CREEK 8330 .4 .0 * 1.8 .7 257
DEADMAN HILL 10220 1.0 .1 1000* 1.8 .9 200
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Basin Index (%) 1400* 225
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .0 * 2.1 .8 262
DIVIDE PEAK 8880 1.7 .0 * 3.4 1.3 262
ELK RIVER 8700 .7 .0 * 1.8 1.0 180
LITTLE SNAKE RIVER 8915 1.3 .0 * 2.9 1.8 161
OLD BATTLE 10000 2.4 .5 480* 2.6 1.6 162
SAGE CREEK BASIN 7850 .9 .0 * 2.4 1.0 240
SANDSTONE RS 8150 1.2 .0 * 2.1 .9 233
WHISKEY PARK 8950 1.9 .0 * 3.1 1.2 258
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Basin Index (%) 2020* 212
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .6 .0 * .8 .7 114
BLIND BULL SUM 8650 .1 .1 100* .7 .7 100
EAST RIM DIVIDE 7930 .0 .0 * .6 .5 120
ELKHART PARK G.S. 9400 .4 .0 * .8 .7 114
GROS VENTRE SUMMIT 8750 1.2 .3 400* 1.1 .6 183
GUNSIGHT PASS 9820 1.5 .0 * 1.6 .9 178
KENDALL R.S. 7740 .0 .0 * .6 .5 120
LOOMIS PARK 8240 .0 .0 * .8 .6 133
NEW FORK LAKE 8340 .0 .0 * .4 .5 80
POCKET CREEK 9360 1.2 -M * 1.4 -M *
SNIDER BASIN 8060 .0 .0 * .4 .4 100
SPRING CREEK DIVIDE 9000 .0 .0 * .5 .7 71
TRIPLE PEAK 8500 .0 .0 * .7 .7 100
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Basin Index (%) 950* 120
LOWER GREEN RIVER
BLACKS FORK JCT 8870 -M -M * 1.1 -M *
BUCK PASTURE 9700 .2 -M * 1.4 -M *
EF BLACKS FORK GS 9360 .3 -M * 1.0 -M *
HAMS FORK 7840 .0 .0 * 1.0 .5 200
HEWINTA 9519 -M .0 * 1.3 .8 162
HICKERSON PARK 9145 .0 .0 * 1.1 .7 157
HOLE-IN-ROCK 9150 .0 .0 * .7 .8 88
INDIAN CREEK 9425 .3 .3 100* .9 .7 129
KELLEY R.S. 8180 .3 .0 * .8 .6 133
SPIRIT LK 10235 .7 -M * 1.6 -M *
STEEL CREEK PARK 10200 .1 .2 50* 1.5 1.0 150
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Basin Index (%) 140* 143
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * 1.1 -M *
BUG LAKE 7950 .4 .0 * .9 .8 112
BURTS MILLER RANCH 8000 .2 -M * .4 -M *
CHALK CREEK #1 8993 .5 .0 * 1.7 1.1 155
HAYDEN FORK 9212 .1 .0 * 1.6 1.0 160
KELLEY R.S. 8180 .3 .0 * .8 .6 133
LILY LAKE 9156 -M .0 * 1.5 1.0 150
MONTE CRISTO 8960 .7 .0 * 1.3 1.0 130
SALT RIVER SUMMIT 7760 .0 .0 * .9 .6 150
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Basin Index (%) * 143
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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.
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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.