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 9 , 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 * .8 .5 160
BLACK BEAR 8170 1.1 .2 550* 1.2 1.0 120
BLIND BULL SUM 8650 .4 .0 * .6 .5 120
COTTONWOOD CREEK 7670 .5 .0 * .6 .7 86
EAST RIM DIVIDE 7930 .0 .0 * .6 .4 150
GRAND TARGHEE 9260 1.2 1.1 109* 1.3 1.8 72
GRANITE CREEK 6770 .0 .0 * .6 .4 150
GRASSY LAKE 7265 .0 .0 * .6 1.0 60
GROS VENTRE SUMMIT 8750 1.1 .0 * .9 .4 225
GUNSIGHT PASS 9820 1.5 .0 * 1.6 .7 229
LEWIS LAKE DIVIDE 7850 .0 .0 * .6 .8 75
PHILLIPS BENCH 8200 .0 .0 * .5 .6 83
SALT RIVER SUMMIT 7760 .0 .0 * .6 .4 150
SNAKE RIVER STATION 6920 .2 .0 * .5 .8 62
SPRING CREEK DIVIDE 9000 .0 .0 * .4 .5 80
THUMB DIVIDE 7980 .0 .0 * .5 .7 71
TOGWOTEE PASS 9580 2.3 .2 1150* 1.1 .6 183
TWO OCEAN PLATEAU 9240 2.0 .5 400* 1.1 .8 138
WILLOW CREEK 8380 .0 .0 * 1.2 .9 133
YOUNTS PEAK 8350 -M .2 * -M .7 *
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Basin Index (%) 515* 113
MADISON-GALLATIN
BLACK BEAR 8170 1.1 .2 550* 1.2 1.0 120
CANYON 7870 .8 .0 * 1.1 .5 220
MADISON PLATEAU 7750 .2 .0 * 1.0 .8 125
WEST YELLOWSTONE 6700 .0 .0 * .5 .6 83
WHISKEY CREEK 6800 .0 .0 * .8 .6 133
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Basin Index (%) 1050* 131
YELLOWSTONE
BEARTOOTH LAKE 9360 1.7 .7 243* .5 .6 83
BURNT MTN 5880 -M .0 * 3.1 1.3 238
CANYON 7870 .8 .0 * 1.1 .5 220
COLE CREEK 7850 2.5 .8 312* 2.0 1.1 182
EVENING STAR 9200 2.0 .4 500* 1.2 .9 133
FISHER CREEK 9100 2.3 .1 2300* .9 .9 100
NORTHEAST ENTRANCE 7350 .1 .0 * .4 .6 67
PARKER PEAK 9400 1.7 .6 283* .6 .8 75
SYLVAN LAKE 8420 .6 .0 * 1.1 .8 138
THUMB DIVIDE 7980 .0 .0 * .5 .7 71
TWO OCEAN PLATEAU 9240 2.0 .5 400* 1.1 .8 138
WHITE MILL 8700 1.4 .0 * .8 .8 100
WOLVERINE 7650 .0 .0 * .6 .6 100
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Basin Index (%) 487* 134
WIND RIVER
BURROUGHS CREEK 8750 -M .0 * -M .5 *
CASTLE CREEK 8400 .1 -M * 1.1 -M *
COLD SPRINGS 9630 1.2 .0 * 1.9 .6 317
DEER PARK 9700 1.7 .0 * 2.0 .8 250
HOBBS PARK 10100 2.1 .1 2100* 1.9 .6 317
KIRWIN 9550 2.3 .2 1150* 1.4 .6 233
LITTLE WARM 9370 1.9 .0 * -M .5 *
OWL CREEK 8975 .9 .0 * 1.1 .5 220
SOUTH PASS 9040 1.1 .0 * 2.0 .6 333
ST. LAWRENCE ALT 8620 .6 .0 * 1.8 .6 300
TOGWOTEE PASS 9580 2.3 .2 1150* 1.1 .6 183
TOWNSEND CREEK 8700 -M .0 * -M .7 *
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Basin Index (%) 2820* 269
BIGHORN BASIN
BALD MTN. 9380 2.4 1.0 240* 1.4 .9 156
BEAR TRAP MEADOW 8200 1.8 .0 * 2.4 .6 400
BONE SPRINGS DIV 9350 1.7 .8 212* 1.4 .9 156
GRAVE SPRINGS 8550 2.2 .0 * 2.5 .8 312
KIRWIN 9550 2.3 .2 1150* 1.4 .6 233
MARQUETTE 8760 2.5 -M * 2.9 -M *
MIDDLE POWDER 7760 2.9 .0 * 2.3 .8 288
OWL CREEK 8975 .9 .0 * 1.1 .5 220
POWDER RIVER PASS 9480 2.0 .0 * 2.1 .7 300
SHELL CREEK 9580 2.7 1.0 270* 1.7 .8 212
TIMBER CREEK 7950 1.1 .0 * 2.1 .8 262
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Basin Index (%) 667* 249
SHOSHONE RIVER
BLACKWATER 9780 3.6 .7 514* 1.4 .9 156
EVENING STAR 9200 2.0 .4 500* 1.2 .9 133
MARQUETTE 8760 2.5 -M * 2.9 -M *
SYLVAN ROAD 7120 .1 .0 * 1.2 .7 171
YOUNTS PEAK 8350 -M .2 * -M .7 *
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Basin Index (%) 518* 152
POWDER RIVER
BEAR TRAP MEADOW 8200 1.8 .0 * 2.4 .6 400
CLOUD PEAK RESERVOIR 9860 2.5 .0 * 2.9 .9 322
GRAVE SPRINGS 8550 2.2 .0 * 2.5 .8 312
HANSEN SAWMILL 8360 2.1 .0 * 2.8 .6 467
MIDDLE POWDER 7760 2.9 .0 * 2.3 .8 288
POWDER RIVER PASS 9480 2.0 .0 * 2.1 .7 300
SOLDIER PARK 8720 1.9 -M * 2.6 -M *
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Basin Index (%) * 341
TONGUE RIVER
BIG GOOSE 7990 2.0 .0 * 2.7 .8 338
BONE SPRINGS DIV 9350 1.7 .8 212* 1.4 .9 156
BURGESS JUNCTION 7880 1.5 .2 750* 2.0 .8 250
DOME LAKE 8880 2.0 .3 667* 2.6 .9 289
LITTLE GOOSE 8870 2.5 -M * 3.3 -M *
SUCKER CREEK 8880 2.1 .1 2100* 2.3 .8 288
TIE CREEK 6870 1.4 .0 * 2.6 1.0 260
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Basin Index (%) 764* 262
BELLE FOURCHE
COLE CANYON 5910 -M .0 * -M .6 *
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Basin Index (%) * *
CHEYENNE RIVER BASIN
BLIND PARK 6890 -M .0 * 3.7 .8 462
NORTH RAPID CREEK 6130 -M .0 * -M .7 *
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Basin Index (%) * 462
UPPER N. PLATTE
ARAPAHO RIDGE 10960 .8 .2 400* 1.2 .6 200
BLACKHALL MTN 9820 .8 -M * 1.7 -M *
COLUMBINE 9160 .1 .0 * .9 .8 112
DIVIDE PEAK 8880 .4 .0 * 1.6 .9 178
JOE WRIGHT 10120 .0 .0 * 1.3 .9 144
LAPRELE CREEK 8375 .3 .0 * 1.3 .6 217
MED BOW 10500 .7 -M * 1.3 -M *
NORTH FRENCH CREEK 10130 .3 .1 300* 1.1 .8 138
NEVER SUMMER 10280 .7 .0 * 1.1 -M *
OLD BATTLE 10000 1.0 .0 * 1.1 1.2 92
RAWAH 9020 .9 .0 * 1.9 .6 317
SAGE CREEK BASIN 7850 .6 .0 * 1.4 .8 175
SAND LAKE 10050 1.3 .0 * 1.5 .9 167
SOUTH BRUSH CREEK 8440 .2 .0 * 1.3 .6 217
TOWER 10500 .6 .2 300* 1.2 1.2 100
WEBBER SPRINGS 9250 .1 .0 * 1.3 .9 144
WILLOW CREEK PASS 9540 1.1 .0 * 1.3 .4 325
ZIRKEL 9340 .1 .0 * .6 1.1 55
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Basin Index (%) 1700* 154
SWEETWATER
DEER PARK 9700 1.7 .0 * 2.0 .8 250
LARSEN CREEK 9000 .3 -M * 1.3 -M *
SOUTH PASS 9040 1.1 .0 * 2.0 .6 333
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Basin Index (%) * 286
LOWER N. PLATTE
CASPER MTN. 7900 -M .0 * 2.5 .7 357
LAPRELE CREEK 8375 .3 .0 * 1.3 .6 217
RENO HILL 8400 3.8 .0 * -M .6 *
WINDY PEAK 7900 .5 .0 * 1.7 .5 340
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Basin Index (%) * 306
LARAMIE RIVER
BROOKLYN LAKE 10240 .1 .0 * .7 .6 117
CINNABAR PARK 9574 .1 .0 * .9 .6 150
CROW CREEK 8330 .0 .0 * .9 .3 300
DEADMAN HILL 10220 .8 .0 * 1.1 .6 183
RAWAH 9020 .9 .0 * 1.9 .6 317
ROACH 9700 -M .0 * -M .6 *
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Basin Index (%) * 204
S. PLATTE
BLACK MOUNTAIN 8920 .6 -M * 1.1 -M *
CROW CREEK 8330 .0 .0 * .9 .3 300
DEADMAN HILL 10220 .8 .0 * 1.1 .6 183
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Basin Index (%) * 222
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .0 * .9 .7 129
DIVIDE PEAK 8880 .4 .0 * 1.6 .9 178
ELK RIVER 8700 .2 .0 * 1.1 .8 138
LITTLE SNAKE RIVER 8915 .0 .0 * 1.2 1.2 100
OLD BATTLE 10000 1.0 .0 * 1.1 1.2 92
SAGE CREEK BASIN 7850 .6 .0 * 1.4 .8 175
SANDSTONE RS 8150 .2 .0 * .9 .7 129
WHISKEY PARK 8950 .0 .0 * 1.1 .8 138
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Basin Index (%) * 131
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .9 .0 * .8 .5 160
BLIND BULL SUM 8650 .4 .0 * .6 .5 120
EAST RIM DIVIDE 7930 .0 .0 * .6 .4 150
ELKHART PARK G.S. 9400 .6 .0 * 1.0 .5 200
GROS VENTRE SUMMIT 8750 1.1 .0 * .9 .4 225
GUNSIGHT PASS 9820 1.5 .0 * 1.6 .7 229
KENDALL R.S. 7740 .0 .0 * .7 .4 175
LOOMIS PARK 8240 .1 .0 * .7 .4 175
NEW FORK LAKE 8340 .0 .0 * .6 .4 150
POCKET CREEK 9360 1.4 -M * 1.4 -M *
SNIDER BASIN 8060 .0 .0 * .4 .3 133
SPRING CREEK DIVIDE 9000 .0 .0 * .4 .5 80
TRIPLE PEAK 8500 .0 .0 * .5 .5 100
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Basin Index (%) * 160
LOWER GREEN RIVER
BLACKS FORK JCT 8870 -M -M * .5 -M *
BUCK PASTURE 9700 .0 -M * .5 -M *
EF BLACKS FORK GS 9360 .0 -M * .4 -M *
HAMS FORK 7840 .0 .0 * .4 .3 133
HEWINTA 9519 .0 .0 * .6 .6 100
HICKERSON PARK 9145 .3 .0 * .6 .6 100
HOLE-IN-ROCK 9150 .0 .0 * .5 .6 83
INDIAN CREEK 9425 .0 .0 * .5 .5 100
KELLEY R.S. 8180 .1 .0 * .4 .4 100
SPIRIT LK 10235 .1 -M * .7 -M *
STEEL CREEK PARK 10200 .0 .0 * .6 .7 86
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Basin Index (%) * 97
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * .5 -M *
BUG LAKE 7950 .4 .0 * .7 .6 117
BURTS MILLER RANCH 8000 .2 -M * .4 -M *
CHALK CREEK #1 8993 .2 .0 * 1.0 .8 125
HAYDEN FORK 9212 .0 .0 * .8 .7 114
KELLEY R.S. 8180 .1 .0 * .4 .4 100
LILY LAKE 9156 .0 .0 * .7 .7 100
MONTE CRISTO 8960 .2 .0 * .5 .7 71
SALT RIVER SUMMIT 7760 .0 .0 * .6 .4 150
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Basin Index (%) * 109
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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.
