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 5 , 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 .3 300
BLACK BEAR 8170 1.2 .0 * .9 .6 150
BLIND BULL SUM 8650 .5 .0 * .6 .3 200
COTTONWOOD CREEK 7670 .3 .0 * .6 .4 150
EAST RIM DIVIDE 7930 .2 .0 * .5 .2 250
GRAND TARGHEE 9260 1.3 .8 162* .8 .6 133
GRANITE CREEK 6770 .1 .0 * .5 .3 167
GRASSY LAKE 7265 .4 .0 * .4 .6 67
GROS VENTRE SUMMIT 8750 1.1 .0 * .9 .2 450
GUNSIGHT PASS 9820 1.8 .0 * 1.3 .4 325
LEWIS LAKE DIVIDE 7850 .1 .0 * .6 .5 120
PHILLIPS BENCH 8200 .0 .0 * .4 .4 100
SALT RIVER SUMMIT 7760 .0 .0 * .6 .3 200
SNAKE RIVER STATION 6920 .1 .0 * .5 .4 125
SPRING CREEK DIVIDE 9000 .2 .0 * .3 .3 100
THUMB DIVIDE 7980 .0 .0 * .4 .4 100
TOGWOTEE PASS 9580 2.5 .0 * 1.1 .4 275
TWO OCEAN PLATEAU 9240 2.2 .1 2200* 1.0 .5 200
WILLOW CREEK 8380 .5 .0 * 1.1 .5 220
YOUNTS PEAK 8350 -M .0 * -M .4 *
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Basin Index (%) 1389* 176
MADISON-GALLATIN
BLACK BEAR 8170 1.2 .0 * .9 .6 150
CANYON 7870 -M .0 * 1.1 .3 367
MADISON PLATEAU 7750 .6 .0 * .9 .5 180
WEST YELLOWSTONE 6700 .0 .0 * .5 .4 125
WHISKEY CREEK 6800 .0 .0 * .6 .3 200
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Basin Index (%) * 190
YELLOWSTONE
BEARTOOTH LAKE 9360 1.5 .4 375* .3 .3 100
BURNT MTN 5880 -M .0 * -M .8 *
CANYON 7870 -M .0 * 1.1 .3 367
COLE CREEK 7850 -M .4 * 2.2 .6 367
EVENING STAR 9200 2.2 .0 * 1.1 .5 220
FISHER CREEK 9100 2.4 .0 * .9 .5 180
NORTHEAST ENTRANCE 7350 .2 .0 * .4 .3 133
PARKER PEAK 9400 1.6 .3 533* .6 .5 120
SYLVAN LAKE 8420 1.1 .0 * 1.1 .5 220
THUMB DIVIDE 7980 .0 .0 * .4 .4 100
TWO OCEAN PLATEAU 9240 2.2 .1 2200* 1.0 .5 200
WHITE MILL 8700 1.5 .0 * .7 .5 140
WOLVERINE 7650 .2 .0 * .5 .4 125
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Basin Index (%) 1612* 194
WIND RIVER
BURROUGHS CREEK 8750 -M .0 * -M .3 *
CASTLE CREEK 8400 .5 -M * .7 -M *
COLD SPRINGS 9630 1.6 .0 * -M .4 *
DEER PARK 9700 -M .0 * -M .6 *
HOBBS PARK 10100 2.5 .0 * 1.9 .5 380
KIRWIN 9550 2.3 .0 * 1.2 .3 400
LITTLE WARM 9370 2.1 .0 * -M .3 *
OWL CREEK 8975 1.2 .0 * 1.1 .3 367
SOUTH PASS 9040 1.5 .0 * 1.7 .4 425
ST. LAWRENCE ALT 8620 1.4 .0 * 1.5 .4 375
TOGWOTEE PASS 9580 2.5 .0 * 1.1 .4 275
TOWNSEND CREEK 8700 -M .0 * -M .5 *
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Basin Index (%) * 370
BIGHORN BASIN
BALD MTN. 9380 -M .3 * 1.0 .4 250
BEAR TRAP MEADOW 8200 -M .0 * -M .3 *
BONE SPRINGS DIV 9350 1.8 .4 450* 1.0 .5 200
GRAVE SPRINGS 8550 -M .0 * -M .5 *
KIRWIN 9550 2.3 .0 * 1.2 .3 400
MARQUETTE 8760 3.0 -M * -M -M *
MIDDLE POWDER 7760 3.4 .0 * 2.2 .4 550
OWL CREEK 8975 1.2 .0 * 1.1 .3 367
POWDER RIVER PASS 9480 2.3 .0 * 1.8 .4 450
SHELL CREEK 9580 2.7 .6 450* 1.5 .4 375
TIMBER CREEK 7950 1.4 .0 * 1.9 .4 475
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Basin Index (%) 1510* 377
SHOSHONE RIVER
BLACKWATER 9780 3.6 .0 * 1.5 .5 300
EVENING STAR 9200 2.2 .0 * 1.1 .5 220
MARQUETTE 8760 3.0 -M * -M -M *
SYLVAN ROAD 7120 .7 .0 * 1.3 .4 325
YOUNTS PEAK 8350 -M .0 * -M .4 *
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Basin Index (%) * 279
POWDER RIVER
BEAR TRAP MEADOW 8200 -M .0 * -M .3 *
CLOUD PEAK RESERVOIR 9860 2.9 .0 * -M .4 *
GRAVE SPRINGS 8550 -M .0 * -M .5 *
HANSEN SAWMILL 8360 2.6 .0 * -M .3 *
MIDDLE POWDER 7760 3.4 .0 * 2.2 .4 550
POWDER RIVER PASS 9480 2.3 .0 * 1.8 .4 450
SOLDIER PARK 8720 2.5 -M * 2.6 -M *
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Basin Index (%) * 500*
TONGUE RIVER
BIG GOOSE 7990 -M .0 * -M .5 *
BONE SPRINGS DIV 9350 1.8 .4 450* 1.0 .5 200
BURGESS JUNCTION 7880 -M .0 * 1.7 .4 425
DOME LAKE 8880 -M .0 * -M .5 *
LITTLE GOOSE 8870 3.0 -M * 3.0 -M *
SUCKER CREEK 8880 2.5 .0 * 2.3 .4 575
TIE CREEK 6870 -M .0 * 2.4 .6 400
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Basin Index (%) 1075* 389
BELLE FOURCHE
COLE CANYON 5910 -M .0 * -M .3 *
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Basin Index (%) * *
CHEYENNE RIVER BASIN
BLIND PARK 6890 -M .0 * -M .4 *
NORTH RAPID CREEK 6130 -M .0 * -M .4 *
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Basin Index (%) * *
UPPER N. PLATTE
ARAPAHO RIDGE 10960 1.0 .1 1000* 1.2 .5 240
BLACKHALL MTN 9820 1.2 -M * 1.4 -M *
COLUMBINE 9160 .4 .0 * .7 .5 140
DIVIDE PEAK 8880 1.3 .0 * 1.5 .6 250
JOE WRIGHT 10120 .5 .0 * 1.1 .4 275
LAPRELE CREEK 8375 1.0 .0 * 1.0 .3 333
MED BOW 10500 1.0 -M * 1.2 -M *
NORTH FRENCH CREEK 10130 .8 .0 * 1.0 .5 200
NEVER SUMMER 10280 .7 .0 * 1.0 -M *
OLD BATTLE 10000 .9 .0 * .7 .7 100
RAWAH 9020 1.6 .0 * 1.5 .5 300
SAGE CREEK BASIN 7850 1.5 .0 * 1.4 .5 280
SAND LAKE 10050 1.2 .0 * 1.2 .5 240
SOUTH BRUSH CREEK 8440 .9 .0 * 1.0 .4 250
TOWER 10500 1.1 .0 * .9 .7 129
WEBBER SPRINGS 9250 .7 .0 * 1.2 .6 200
WILLOW CREEK PASS 9540 1.2 .0 * 1.1 .2 550
ZIRKEL 9340 .3 .0 * .6 .8 75
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Basin Index (%) 15100* 209
SWEETWATER
DEER PARK 9700 -M .0 * -M .6 *
LARSEN CREEK 9000 .9 -M * 1.2 -M *
SOUTH PASS 9040 1.5 .0 * 1.7 .4 425
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Basin Index (%) * 425*
LOWER N. PLATTE
CASPER MTN. 7900 -M .0 * 2.1 .4 525
LAPRELE CREEK 8375 1.0 .0 * 1.0 .3 333
RENO HILL 8400 -M .0 * -M .4 *
WINDY PEAK 7900 1.3 .0 * 1.6 .3 533
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Basin Index (%) * 470
LARAMIE RIVER
BROOKLYN LAKE 10240 .4 .0 * .6 .3 200
CINNABAR PARK 9574 .5 .0 * .8 .5 160
CROW CREEK 8330 .4 .0 * .8 .2 400
DEADMAN HILL 10220 .9 .0 * 1.0 .2 500
RAWAH 9020 1.6 .0 * 1.5 .5 300
ROACH 9700 -M .0 * -M .3 *
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Basin Index (%) * 276
S. PLATTE
BLACK MOUNTAIN 8920 1.0 -M * 1.0 -M *
CROW CREEK 8330 .4 .0 * .8 .2 400
DEADMAN HILL 10220 .9 .0 * 1.0 .2 500
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Basin Index (%) * 450
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .0 * .8 .4 200
DIVIDE PEAK 8880 1.3 .0 * 1.5 .6 250
ELK RIVER 8700 1.0 .0 * 1.0 .5 200
LITTLE SNAKE RIVER 8915 .5 .0 * 1.2 .7 171
OLD BATTLE 10000 .9 .0 * .7 .7 100
SAGE CREEK BASIN 7850 1.5 .0 * 1.4 .5 280
SANDSTONE RS 8150 .9 .0 * .9 .4 225
WHISKEY PARK 8950 .8 .0 * 1.1 .5 220
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Basin Index (%) * 200
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .8 .0 * .7 .3 233
BLIND BULL SUM 8650 .5 .0 * .6 .3 200
EAST RIM DIVIDE 7930 .2 .0 * .5 .2 250
ELKHART PARK G.S. 9400 .7 .0 * .7 .3 233
GROS VENTRE SUMMIT 8750 1.1 .0 * .9 .2 450
GUNSIGHT PASS 9820 1.8 .0 * 1.3 .4 325
KENDALL R.S. 7740 .0 .0 * .6 .2 300
LOOMIS PARK 8240 .0 .0 * .7 .2 350
NEW FORK LAKE 8340 .4 .0 * .2 .2 100
POCKET CREEK 9360 1.5 -M * 1.2 -M *
SNIDER BASIN 8060 .0 .0 * .3 .2 150
SPRING CREEK DIVIDE 9000 .2 .0 * .3 .3 100
TRIPLE PEAK 8500 .0 .0 * .5 .3 167
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Basin Index (%) * 235
LOWER GREEN RIVER
BLACKS FORK JCT 8870 -M -M * .5 -M *
BUCK PASTURE 9700 .0 -M * .6 -M *
EF BLACKS FORK GS 9360 .1 -M * .4 -M *
HAMS FORK 7840 .0 .0 * .4 .2 200
HEWINTA 9519 .1 .0 * .6 .3 200
HICKERSON PARK 9145 .5 .0 * .6 .3 200
HOLE-IN-ROCK 9150 .0 .0 * .4 .4 100
INDIAN CREEK 9425 .0 .0 * .3 .3 100
KELLEY R.S. 8180 .1 .0 * .3 .3 100
SPIRIT LK 10235 .4 -M * .5 -M *
STEEL CREEK PARK 10200 -M .0 * .7 .4 175
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Basin Index (%) * 150
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * .6 -M *
BUG LAKE 7950 .3 .0 * .7 .4 175
BURTS MILLER RANCH 8000 .3 -M * .3 -M *
CHALK CREEK #1 8993 .8 .0 * 1.1 .5 220
HAYDEN FORK 9212 .3 .0 * .8 .4 200
KELLEY R.S. 8180 .1 .0 * .3 .3 100
LILY LAKE 9156 .1 .0 * .7 .4 175
MONTE CRISTO 8960 .2 .0 * .6 .4 150
SALT RIVER SUMMIT 7760 .0 .0 * .6 .3 200
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Basin Index (%) * 178
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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.