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 FRIDAY: OCTOBER 4 , 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 .2 .0 * .7 .2 350
BLACK BEAR 8170 -M .0 * 1.2 .4 300
BLIND BULL SUM 8650 .5 .0 * .5 .3 167
COTTONWOOD CREEK 7670 .5 .0 * .6 .3 200
EAST RIM DIVIDE 7930 .3 .0 * .5 .1 500
GRAND TARGHEE 9260 1.1 .8 138* .8 .4 200
GRANITE CREEK 6770 .1 .0 * .5 .2 250
GRASSY LAKE 7265 .5 .0 * .6 .5 120
GROS VENTRE SUMMIT 8750 1.1 .0 * .8 .1 800
GUNSIGHT PASS 9820 1.6 .0 * 1.0 .2 500
LEWIS LAKE DIVIDE 7850 .3 .0 * .6 .4 150
PHILLIPS BENCH 8200 .1 .0 * .4 .3 133
SALT RIVER SUMMIT 7760 .1 .0 * .5 .2 250
SNAKE RIVER STATION 6920 .2 .0 * .5 .3 167
SPRING CREEK DIVIDE 9000 .2 .0 * .3 .2 150
THUMB DIVIDE 7980 -M .0 * -M .3 *
TOGWOTEE PASS 9580 2.5 .0 * 1.1 .2 550
TWO OCEAN PLATEAU 9240 2.3 .0 * 1.0 .3 333
WILLOW CREEK 8380 .6 .0 * 1.1 .3 367
YOUNTS PEAK 8350 -M .0 * -M .3 *
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Basin Index (%) 1525* 259
MADISON-GALLATIN
BLACK BEAR 8170 -M .0 * 1.2 .4 300
CANYON 7870 -M .0 * -M .2 *
MADISON PLATEAU 7750 .7 .0 * .9 .4 225
WEST YELLOWSTONE 6700 .1 .0 * .5 .3 167
WHISKEY CREEK 6800 .0 .0 * .6 .3 200
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Basin Index (%) * 229
YELLOWSTONE
BEARTOOTH LAKE 9360 1.5 .3 500* .4 .3 133
BURNT MTN 5880 -M .0 * -M .4 *
CANYON 7870 -M .0 * -M .2 *
COLE CREEK 7850 -M .2 * 1.7 .4 425
EVENING STAR 9200 -M .0 * -M .4 *
FISHER CREEK 9100 2.4 .0 * .7 .4 175
NORTHEAST ENTRANCE 7350 .3 .0 * .4 .2 200
PARKER PEAK 9400 1.7 .2 850* .5 .4 125
SYLVAN LAKE 8420 1.1 .0 * 1.1 .4 275
THUMB DIVIDE 7980 -M .0 * -M .3 *
TWO OCEAN PLATEAU 9240 2.3 .0 * 1.0 .3 333
WHITE MILL 8700 1.5 .0 * .5 .4 125
WOLVERINE 7650 .1 .0 * .3 .3 100
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Basin Index (%) 2180* 213
WIND RIVER
BURROUGHS CREEK 8750 -M .0 * -M .2 *
CASTLE CREEK 8400 .6 -M * .9 -M *
COLD SPRINGS 9630 -M .0 * -M .3 *
DEER PARK 9700 -M .0 * 1.0 .2 500
HOBBS PARK 10100 1.6 .0 * .9 .3 300
KIRWIN 9550 2.0 .0 * 1.0 .2 500
LITTLE WARM 9370 1.9 .0 * -M .2 *
OWL CREEK 8975 1.1 .0 * 1.0 .2 500
SOUTH PASS 9040 .7 .0 * .9 .2 450
ST. LAWRENCE ALT 8620 .9 .0 * .8 .3 267
TOGWOTEE PASS 9580 2.5 .0 * 1.1 .2 550
TOWNSEND CREEK 8700 -M .0 * -M .3 *
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Basin Index (%) * 419
BIGHORN BASIN
BALD MTN. 9380 -M .0 * .7 .3 233
BEAR TRAP MEADOW 8200 -M .0 * -M .2 *
BONE SPRINGS DIV 9350 -M .3 * .5 .3 167
GRAVE SPRINGS 8550 -M .0 * -M .3 *
KIRWIN 9550 2.0 .0 * 1.0 .2 500
MARQUETTE 8760 2.1 -M * -M -M *
MIDDLE POWDER 7760 1.5 .0 * 1.2 .3 400
OWL CREEK 8975 1.1 .0 * 1.0 .2 500
POWDER RIVER PASS 9480 1.7 .0 * 1.1 .3 367
SHELL CREEK 9580 2.3 .5 460* .9 .3 300
TIMBER CREEK 7950 1.1 .0 * 1.5 .2 750
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Basin Index (%) 1940* 376
SHOSHONE RIVER
BLACKWATER 9780 -M .0 * 1.2 .4 300
EVENING STAR 9200 -M .0 * -M .4 *
MARQUETTE 8760 2.1 -M * -M -M *
SYLVAN ROAD 7120 .8 .0 * 1.1 .3 367
YOUNTS PEAK 8350 -M .0 * -M .3 *
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Basin Index (%) * 329*
POWDER RIVER
BEAR TRAP MEADOW 8200 -M .0 * -M .2 *
CLOUD PEAK RESERVOIR 9860 2.1 .0 * -M .3 *
GRAVE SPRINGS 8550 -M .0 * -M .3 *
HANSEN SAWMILL 8360 -M .0 * -M .2 *
MIDDLE POWDER 7760 1.5 .0 * 1.2 .3 400
POWDER RIVER PASS 9480 1.7 .0 * 1.1 .3 367
SOLDIER PARK 8720 2.0 -M * 2.0 -M *
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Basin Index (%) * 383*
TONGUE RIVER
BIG GOOSE 7990 -M .0 * -M .2 *
BONE SPRINGS DIV 9350 -M .3 * .5 .3 167
BURGESS JUNCTION 7880 -M .0 * .9 .3 300
DOME LAKE 8880 1.5 .0 * -M .4 *
LITTLE GOOSE 8870 1.8 -M * 1.8 -M *
SUCKER CREEK 8880 1.3 .0 * 1.1 .3 367
TIE CREEK 6870 -M .0 * 1.7 .3 567
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Basin Index (%) * 350
BELLE FOURCHE
COLE CANYON 5910 -M .0 * -M .1 *
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Basin Index (%) * *
CHEYENNE RIVER BASIN
BLIND PARK 6890 .6 .0 * .5 .2 250
NORTH RAPID CREEK 6130 .7 .0 * .7 .2 350
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Basin Index (%) * 300
UPPER N. PLATTE
ARAPAHO RIDGE 10960 .3 .1 300* .3 .4 75
BLACKHALL MTN 9820 .6 -M * .8 -M *
COLUMBINE 9160 .4 .0 * .2 .3 67
DIVIDE PEAK 8880 .6 .0 * .7 .4 175
JOE WRIGHT 10120 .0 .0 * .2 .3 67
LAPRELE CREEK 8375 .2 .0 * .1 .2 50
MED BOW 10500 .5 -M * .7 -M *
NORTH FRENCH CREEK 10130 .5 .0 * .5 .3 167
NEVER SUMMER 10280 .1 .0 * .2 -M *
OLD BATTLE 10000 .5 .0 * .3 .5 60
RAWAH 9020 .3 .0 * .2 .3 67
SAGE CREEK BASIN 7850 .8 .0 * .8 .3 267
SAND LAKE 10050 .5 .0 * .4 .3 133
SOUTH BRUSH CREEK 8440 .7 .0 * .5 .3 167
TOWER 10500 .5 .0 * .3 .4 75
WEBBER SPRINGS 9250 .3 .0 * .6 .4 150
WILLOW CREEK PASS 9540 .3 .0 * .2 .1 200
ZIRKEL 9340 .3 .0 * .3 .5 60
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Basin Index (%) 6300* 112
SWEETWATER
DEER PARK 9700 -M .0 * 1.0 .2 500
LARSEN CREEK 9000 .7 -M * .8 -M *
SOUTH PASS 9040 .7 .0 * .9 .2 450
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Basin Index (%) * 475
LOWER N. PLATTE
CASPER MTN. 7900 .7 .0 * .2 .2 100
LAPRELE CREEK 8375 .2 .0 * .1 .2 50
RENO HILL 8400 .8 .0 * .7 .2 350
WINDY PEAK 7900 .4 .0 * .6 .2 300
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Basin Index (%) * 200
LARAMIE RIVER
BROOKLYN LAKE 10240 .3 .0 * .0 .2 0
CINNABAR PARK 9574 .3 .0 * .3 .2 150
CROW CREEK 8330 .0 .0 * .2 .2 100
DEADMAN HILL 10220 .3 .0 * .3 .2 150
RAWAH 9020 .3 .0 * .2 .3 67
ROACH 9700 -M .0 * -M .2 *
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Basin Index (%) * 91
S. PLATTE
BLACK MOUNTAIN 8920 .3 -M * .2 -M *
CROW CREEK 8330 .0 .0 * .2 .2 100
DEADMAN HILL 10220 .3 .0 * .3 .2 150
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Basin Index (%) * 125
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .0 * .4 .3 133
DIVIDE PEAK 8880 .6 .0 * .7 .4 175
ELK RIVER 8700 .7 .0 * .7 .3 233
LITTLE SNAKE RIVER 8915 .3 .0 * .7 .4 175
OLD BATTLE 10000 .5 .0 * .3 .5 60
SAGE CREEK BASIN 7850 .8 .0 * .8 .3 267
SANDSTONE RS 8150 .7 .0 * .6 .3 200
WHISKEY PARK 8950 .5 .0 * .6 .4 150
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Basin Index (%) * 166
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .9 .0 * .6 .2 300
BLIND BULL SUM 8650 .5 .0 * .5 .3 167
EAST RIM DIVIDE 7930 .3 .0 * .5 .1 500
ELKHART PARK G.S. 9400 .7 .0 * .6 .2 300
GROS VENTRE SUMMIT 8750 1.1 .0 * .8 .1 800
GUNSIGHT PASS 9820 1.6 .0 * 1.0 .2 500
KENDALL R.S. 7740 .0 .0 * .6 .1 600
LOOMIS PARK 8240 .2 .0 * .6 .2 300
NEW FORK LAKE 8340 .4 .0 * .1 .1 100
POCKET CREEK 9360 1.4 -M * 1.0 -M *
SNIDER BASIN 8060 .0 .0 * .3 .1 300
SPRING CREEK DIVIDE 9000 .2 .0 * .3 .2 150
TRIPLE PEAK 8500 .1 .0 * .4 .2 200
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Basin Index (%) * 315
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 * .3 -M *
HAMS FORK 7840 .0 .0 * .3 .2 150
HEWINTA 9519 .2 .0 * .5 .2 250
HICKERSON PARK 9145 .0 .0 * .3 .3 100
HOLE-IN-ROCK 9150 .0 .0 * .3 .3 100
INDIAN CREEK 9425 .0 .0 * .2 .2 100
KELLEY R.S. 8180 .1 .0 * .2 .2 100
SPIRIT LK 10235 -M -M * -M -M *
STEEL CREEK PARK 10200 .0 .0 * .6 .2 300
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Basin Index (%) * 150
UPPER BEAR RIVER
BEAR RIVER RS 8777 .1 -M * .5 -M *
BUG LAKE 7950 .6 .0 * .6 .3 200
BURTS MILLER RANCH 8000 .3 -M * .3 -M *
CHALK CREEK #1 8993 .5 .0 * .8 .3 267
HAYDEN FORK 9212 .3 .0 * .6 .3 200
KELLEY R.S. 8180 .1 .0 * .2 .2 100
LILY LAKE 9156 .1 .0 * .6 .3 200
MONTE CRISTO 8960 .5 .0 * .6 .3 200
SALT RIVER SUMMIT 7760 .1 .0 * .5 .2 250
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Basin Index (%) * 205
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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.
