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 MONDAY: OCTOBER 7 , 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 .4 200
BLACK BEAR 8170 1.3 .1 1300* 1.3 .8 162
BLIND BULL SUM 8650 .6 .0 * .6 .4 150
COTTONWOOD CREEK 7670 .5 .0 * .6 .6 100
EAST RIM DIVIDE 7930 .0 .0 * .6 .3 200
GRAND TARGHEE 9260 1.4 1.0 140* 1.4 1.4 100
GRANITE CREEK 6770 .1 .0 * .6 .4 150
GRASSY LAKE 7265 .1 .0 * .6 .8 75
GROS VENTRE SUMMIT 8750 1.1 .0 * .9 .3 300
GUNSIGHT PASS 9820 1.8 .0 * 1.6 .6 267
LEWIS LAKE DIVIDE 7850 .0 .0 * .7 .6 117
PHILLIPS BENCH 8200 .1 .0 * .6 .5 120
SALT RIVER SUMMIT 7760 .0 .0 * .6 .4 150
SNAKE RIVER STATION 6920 .2 .0 * .5 .6 83
SPRING CREEK DIVIDE 9000 .3 .0 * .5 .4 125
THUMB DIVIDE 7980 .0 .0 * .5 .6 83
TOGWOTEE PASS 9580 2.5 .1 2500* 1.2 .5 240
TWO OCEAN PLATEAU 9240 2.1 .3 700* 1.1 .6 183
WILLOW CREEK 8380 .1 .0 * 1.2 .7 171
YOUNTS PEAK 8350 -M .0 * -M .6 *
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Basin Index (%) 813* 146
MADISON-GALLATIN
BLACK BEAR 8170 1.3 .1 1300* 1.3 .8 162
CANYON 7870 .8 .0 * 1.1 .5 220
MADISON PLATEAU 7750 .6 .0 * .9 .6 150
WEST YELLOWSTONE 6700 .0 .0 * .5 .5 100
WHISKEY CREEK 6800 .0 .0 * .7 .5 140
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Basin Index (%) 2700* 155
YELLOWSTONE
BEARTOOTH LAKE 9360 1.7 .6 283* .8 .5 160
BURNT MTN 5880 -M .0 * -M 1.1 *
CANYON 7870 .8 .0 * 1.1 .5 220
COLE CREEK 7850 2.8 .6 467* 2.2 .8 275
EVENING STAR 9200 2.2 .1 2200* 1.3 .7 186
FISHER CREEK 9100 2.4 .0 * .9 .7 129
NORTHEAST ENTRANCE 7350 .0 .0 * .4 .4 100
PARKER PEAK 9400 1.9 .5 380* .7 .7 100
SYLVAN LAKE 8420 1.0 .0 * 1.1 .7 157
THUMB DIVIDE 7980 .0 .0 * .5 .6 83
TWO OCEAN PLATEAU 9240 2.1 .3 700* 1.1 .6 183
WHITE MILL 8700 1.6 .0 * .9 .6 150
WOLVERINE 7650 .0 .0 * .7 .5 140
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Basin Index (%) 786* 160
WIND RIVER
BURROUGHS CREEK 8750 -M .0 * -M .4 *
CASTLE CREEK 8400 .4 -M * 1.0 -M *
COLD SPRINGS 9630 1.6 .0 * 2.0 .5 400
DEER PARK 9700 1.9 .0 * 1.9 .8 238
HOBBS PARK 10100 2.4 .0 * 1.9 .6 317
KIRWIN 9550 2.4 .0 * 1.5 .5 300
LITTLE WARM 9370 2.1 .0 * -M .4 *
OWL CREEK 8975 1.2 .0 * 1.2 .4 300
SOUTH PASS 9040 1.5 .0 * 1.9 .5 380
ST. LAWRENCE ALT 8620 1.1 .0 * 1.6 .5 320
TOGWOTEE PASS 9580 2.5 .1 2500* 1.2 .5 240
TOWNSEND CREEK 8700 -M .0 * -M .6 *
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Basin Index (%) 16700* 307
BIGHORN BASIN
BALD MTN. 9380 2.5 .7 357* 1.5 .6 250
BEAR TRAP MEADOW 8200 2.2 .0 * -M .4 *
BONE SPRINGS DIV 9350 1.8 .6 300* 1.3 .7 186
GRAVE SPRINGS 8550 2.5 .0 * 2.4 .7 343
KIRWIN 9550 2.4 .0 * 1.5 .5 300
MARQUETTE 8760 3.0 -M * -M -M *
MIDDLE POWDER 7760 3.3 .0 * 2.4 .6 400
OWL CREEK 8975 1.2 .0 * 1.2 .4 300
POWDER RIVER PASS 9480 2.2 .0 * 2.0 .5 400
SHELL CREEK 9580 2.8 .8 350* 1.7 .6 283
TIMBER CREEK 7950 1.4 .0 * 2.0 .6 333
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Basin Index (%) 1062* 308
SHOSHONE RIVER
BLACKWATER 9780 3.7 .5 740* 1.6 .7 229
EVENING STAR 9200 2.2 .1 2200* 1.3 .7 186
MARQUETTE 8760 3.0 -M * -M -M *
SYLVAN ROAD 7120 .5 .0 * 1.2 .6 200
YOUNTS PEAK 8350 -M .0 * -M .6 *
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Basin Index (%) 1067* 205
POWDER RIVER
BEAR TRAP MEADOW 8200 2.2 .0 * -M .4 *
CLOUD PEAK RESERVOIR 9860 2.9 .0 * 3.0 .6 500
GRAVE SPRINGS 8550 2.5 .0 * 2.4 .7 343
HANSEN SAWMILL 8360 2.5 .0 * -M .4 *
MIDDLE POWDER 7760 3.3 .0 * 2.4 .6 400
POWDER RIVER PASS 9480 2.2 .0 * 2.0 .5 400
SOLDIER PARK 8720 2.3 -M * 2.7 -M *
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Basin Index (%) * 408
TONGUE RIVER
BIG GOOSE 7990 2.4 .0 * 2.7 .7 386
BONE SPRINGS DIV 9350 1.8 .6 300* 1.3 .7 186
BURGESS JUNCTION 7880 1.7 .1 1700* 2.0 .6 333
DOME LAKE 8880 2.3 .1 2300* 2.7 .6 450
LITTLE GOOSE 8870 3.0 -M * 3.3 -M *
SUCKER CREEK 8880 2.4 .0 * 2.4 .6 400
TIE CREEK 6870 -M .0 * 2.6 .8 325
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Basin Index (%) 1325* 342
BELLE FOURCHE
COLE CANYON 5910 -M .0 * -M .5 *
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Basin Index (%) * *
CHEYENNE RIVER BASIN
BLIND PARK 6890 -M .0 * 3.6 .7 514
NORTH RAPID CREEK 6130 -M .0 * -M .6 *
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Basin Index (%) * 514
UPPER N. PLATTE
ARAPAHO RIDGE 10960 1.0 .1 1000* 1.2 .6 200
BLACKHALL MTN 9820 1.1 -M * 1.4 -M *
COLUMBINE 9160 .1 .0 * .9 .6 150
DIVIDE PEAK 8880 1.2 .0 * 1.7 .7 243
JOE WRIGHT 10120 .0 .0 * 1.4 .6 233
LAPRELE CREEK 8375 1.0 .0 * 1.2 .4 300
MED BOW 10500 .9 -M * 1.2 -M *
NORTH FRENCH CREEK 10130 .6 .0 * 1.1 .6 183
NEVER SUMMER 10280 .7 .0 * 1.1 -M *
OLD BATTLE 10000 1.1 .0 * 1.0 .9 111
RAWAH 9020 1.5 .0 * 1.8 .6 300
SAGE CREEK BASIN 7850 1.3 .0 * 1.4 .6 233
SAND LAKE 10050 1.4 .0 * 1.5 .7 214
SOUTH BRUSH CREEK 8440 .8 .0 * 1.2 .5 240
TOWER 10500 1.0 .0 * 1.2 1.0 120
WEBBER SPRINGS 9250 .6 .0 * 1.3 .7 186
WILLOW CREEK PASS 9540 1.2 .0 * 1.2 .3 400
ZIRKEL 9340 .1 .0 * .6 1.0 60
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Basin Index (%) 13600* 191
SWEETWATER
DEER PARK 9700 1.9 .0 * 1.9 .8 238
LARSEN CREEK 9000 .4 -M * 1.3 -M *
SOUTH PASS 9040 1.5 .0 * 1.9 .5 380
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Basin Index (%) * 292
LOWER N. PLATTE
CASPER MTN. 7900 -M .0 * 2.6 .5 520
LAPRELE CREEK 8375 1.0 .0 * 1.2 .4 300
RENO HILL 8400 -M .0 * -M .5 *
WINDY PEAK 7900 1.2 .0 * 1.7 .4 425
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Basin Index (%) * 423
LARAMIE RIVER
BROOKLYN LAKE 10240 .3 .0 * .6 .4 150
CINNABAR PARK 9574 -M .0 * -M .6 *
CROW CREEK 8330 .3 .0 * .9 .2 450
DEADMAN HILL 10220 .8 .0 * 1.2 .4 300
RAWAH 9020 1.5 .0 * 1.8 .6 300
ROACH 9700 -M .0 * -M .4 *
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Basin Index (%) * 281
S. PLATTE
BLACK MOUNTAIN 8920 .9 -M * 1.1 -M *
CROW CREEK 8330 .3 .0 * .9 .2 450
DEADMAN HILL 10220 .8 .0 * 1.2 .4 300
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Basin Index (%) * 350
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .0 * .9 .5 180
DIVIDE PEAK 8880 1.2 .0 * 1.7 .7 243
ELK RIVER 8700 .2 .0 * 1.1 .6 183
LITTLE SNAKE RIVER 8915 .0 .0 * 1.2 1.0 120
OLD BATTLE 10000 1.1 .0 * 1.0 .9 111
SAGE CREEK BASIN 7850 1.3 .0 * 1.4 .6 233
SANDSTONE RS 8150 .6 .0 * 1.0 .6 167
WHISKEY PARK 8950 .6 .0 * 1.1 .7 157
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Basin Index (%) * 168
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .8 .0 * .7 .4 175
BLIND BULL SUM 8650 .6 .0 * .6 .4 150
EAST RIM DIVIDE 7930 .0 .0 * .6 .3 200
ELKHART PARK G.S. 9400 .8 .0 * 1.0 .4 250
GROS VENTRE SUMMIT 8750 1.1 .0 * .9 .3 300
GUNSIGHT PASS 9820 1.8 .0 * 1.6 .6 267
KENDALL R.S. 7740 .0 .0 * .7 .3 233
LOOMIS PARK 8240 .1 .0 * .7 .3 233
NEW FORK LAKE 8340 .2 .0 * .4 .3 133
POCKET CREEK 9360 1.4 -M * 1.3 -M *
SNIDER BASIN 8060 .0 .0 * .4 .2 200
SPRING CREEK DIVIDE 9000 .3 .0 * .5 .4 125
TRIPLE PEAK 8500 .0 .0 * .5 .4 125
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Basin Index (%) * 200
LOWER GREEN RIVER
BLACKS FORK JCT 8870 -M -M * .5 -M *
BUCK PASTURE 9700 .0 -M * .6 -M *
EF BLACKS FORK GS 9360 .0 -M * .4 -M *
HAMS FORK 7840 .0 .0 * .4 .3 133
HEWINTA 9519 .1 .0 * .6 .5 120
HICKERSON PARK 9145 .3 .0 * .6 .4 150
HOLE-IN-ROCK 9150 .0 .0 * .5 .5 100
INDIAN CREEK 9425 .1 .0 * .5 .4 125
KELLEY R.S. 8180 .1 .0 * .4 .4 100
SPIRIT LK 10235 .1 -M * .6 -M *
STEEL CREEK PARK 10200 -M .0 * .6 .6 100
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Basin Index (%) * 116
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * .5 -M *
BUG LAKE 7950 .4 .0 * .6 .5 120
BURTS MILLER RANCH 8000 .2 -M * .3 -M *
CHALK CREEK #1 8993 .8 .0 * 1.1 .7 157
HAYDEN FORK 9212 .0 .0 * .9 .6 150
KELLEY R.S. 8180 .1 .0 * .4 .4 100
LILY LAKE 9156 .0 .0 * .8 .5 160
MONTE CRISTO 8960 .1 .0 * .5 .6 83
SALT RIVER SUMMIT 7760 .0 .0 * .6 .4 150
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Basin Index (%) * 132
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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.