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 2 , 2002
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 .0 .0 100* .2 .1 200
COTTONWOOD CREEK 7600 .3 .0 * .4 .1 400
GRANITE CREEK 6770 .7 .0 * .6 .1 600
GRASSY LAKE 7265 .2 .0 * .2 .1 200
GROS VENTRE SUMMIT 8775 .9 .0 * .7 .1 700
LEWIS LAKE DIVIDE 7860 .0 .0 100* .1 .1 100
PHILLIPS BENCH 8200 .7 .0 * .7 .1 700
SALT RIVER SUMMIT 7600 .5 .0 * .5 .1 500
SNAKE RIVER STATION 6920 -M .0 * .1 .1 100
SPRING CREEK DIVIDE 9000 .6 .0 * .5 .1 500
THUMB DIVIDE 7980 .3 .0 * .4 .1 400
TOGWOTEE PASS 9580 .4 .1 400* .3 .1 300
TWO OCEAN PLATEAU 9360 .5 .1 500* .2 .1 200
WILLOW CREEK 8450 .0 .0 100* .3 .1 300
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Basin wide percent of average 450* 371
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .4 .5 80* .1 .1 100
BLACK BEAR 8170 .4 .3 133* .2 .1 200
CANYON 8090 .3 .1 300* .2 .1 200
FISHER CREEK 9100 .4 .4 100* .1 .1 100
MADISON PLATEAU 7750 -M .2 * .2 .1 200
NORTHEAST ENTRANCE 7350 .0 .0 100* .1 .1 100
PARKER PEAK 9400 .1 .6 17* .2 .1 200
SYLVAN LAKE 8420 .3 .4 75* .1 .1 100
THUMB DIVIDE 7980 .3 .0 * .4 .1 400
TWO OCEAN PLATEAU 9360 .5 .1 500* .2 .1 200
WHISKEY CREEK 6800 .3 .1 300* .2 .1 200
WHITE MILL 8700 -M .2 * -M .1 *
WOLVERINE 7650 .2 .0 * .3 .1 300
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Basin wide percent of average 108* 192
WIND RIVER
BURROUGHS CREEK 8750 .5 .2 250* .6 .1 600
COLD SPRINGS 9630 .9 .2 450* .9 .1 900
DEER PARK 9700 .3 .3 100* .2 .1 200
HOBBS PARK 10100 1.5 .3 500* 1.1 .1 1100
LITTLE WARM 9370 .8 .2 400* .4 .1 400
SOUTH PASS 9040 .1 .1 100* .2 .1 200
ST. LAWRENCE ALT 8620 -M .1 * 1.3 .1 1300
TOGWOTEE PASS 9580 .4 .1 400* .3 .1 300
TOWNSEND CREEK 8700 -M .0 * 1.0 .1 1000
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Basin wide percent of average 321* 667
BIGHORN BASIN
BALD MTN. 9380 .5 .7 71* .3 .1 300
BEAR TRAP MEADOW 8200 .0 .1 0* .0 .1 0
BLACKWATER 9780 .6 .7 86* .4 .1 400
BONE SPRINGS DIV 9350 .4 .6 67* .3 .1 300
EVENING STAR 9200 .1 .5 20* .2 .1 200
GRAVE SPRINGS 8550 .2 .1 200* .4 .1 400
KIRWIN 9550 .3 .4 75* .5 .1 500
MARQUETTE 8760 .2 .4 50* .5 .1 500
MIDDLE POWDER 7760 .0 .2 0* .1 .1 100
OWL CREEK 8975 .7 .2 350* .7 .0
POWDER RIVER PASS 9480 .1 .3 33* .0 .1 0
SHELL CREEK 9580 .4 .8 50* .4 .1 400
SYLVAN LAKE 8420 .3 .4 75* .1 .1 100
SYLVAN ROAD 7120 .0 .0 100* .0 .1 0
TIMBER CREEK 7950 .3 .0 * .6 .1 600
YOUNTS PEAK 8350 .1 .1 100* .2 .1 200
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Basin wide percent of average 71* 267
SHOSHONE RIVER
BLACKWATER 9780 .6 .7 86* .4 .1 400
EVENING STAR 9200 .1 .5 20* .2 .1 200
KIRWIN 9550 .3 .4 75* .5 .1 500
MARQUETTE 8760 .2 .4 50* .5 .1 500
SYLVAN LAKE 8420 .3 .4 75* .1 .1 100
SYLVAN ROAD 7120 .0 .0 100* .0 .1 0
YOUNTS PEAK 8350 .1 .1 100* .2 .1 200
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Basin wide percent of average 64* 271
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .1 0* .0 .1 0
BIG GOOSE 7990 .0 .0 100* .1 .1 100
BONE SPRINGS DIV 9350 .4 .6 67* .3 .1 300
BURGESS JUNCTION 7880 -M .3 * -M .1 *
CLOUD PEAK RESERVOIR 9860 .2 .1 200* .3 .1 300
DOME LAKE 8880 .0 .3 0* .4 .1 400
GRAVE SPRINGS 8550 .2 .1 200* .4 .1 400
HANSEN SAWMILL 8360 .3 .1 300* .2 .1 200
MIDDLE POWDER 7760 .0 .2 0* .1 .1 100
POWDER RIVER PASS 9480 .1 .3 33* .0 .1 0
SUCKER CREEK 8880 .2 .2 100* .2 .1 200
TIE CREEK 6870 .0 .0 100* .3 .1 300
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Basin wide percent of average 70* 209
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* .2 .1 200
COLE CANYON 5910 -M -M * .0 -M *
NORTH RAPID CREEK 6130 .0 .0 100* .2 .1 200
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Basin wide percent of average * 200
UPPER N. PLATTE RIVER
COLUMBINE 9400 .4 .0 * .2 .1 200
DIVIDE PEAK 8800 .1 .1 100* .3 .1 300
ELK RIVER 8700 .0 .0 100* .0 .1 0
JOE WRIGHT 10120 .0 .2 0* .1 .1 100
NORTH FRENCH CREEK 10100 .0 .2 0* .1 .1 100
OLD BATTLE 10000 .5 .3 167* .2 .1 200
SAGE CREEK BASIN 7850 .1 .0 * .1 -M *
SOUTH BRUSH CREEK 8400 .0 .0 100* .1 .1 100
TOWER 10500 .2 .2 100* .0 .1 0
WEBBER SPRINGS 9200 .1 .1 100* .2 .1 200
WILLOW CREEK PASS 9540 .0 .0 100* .2 .1 200
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Basin wide percent of average 82* 140
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .4 .2 200* .5 .1 500
CASPER MTN. 7900 .0 .0 100* .2 .1 200
DEADMAN HILL 10220 .0 .2 0* .1 .1 100
DEER PARK 9700 .3 .3 100* .2 .1 200
LAPRELE CREEK 8320 -M .0 * -M .1 *
RENO HILL 8400 .2 .0 * .3 .1 300
ROACH 9700 .1 .0 * .1 .1 100
SAND LAKE 10080 .0 .5 0* .2 .1 200
SOUTH PASS 9040 .1 .1 100* .2 .1 200
WINDY PEAK 7840 .1 .0 * .0 .1 0
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Basin wide percent of average 62* 200
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* .2 .1 200
DIVIDE PEAK 8800 .1 .1 100* .3 .1 300
OLD BATTLE 10000 .5 .3 167* .2 .1 200
SANDSTONE RS 8150 .0 .0 100* .2 .1 200
WHISKEY PARK 8950 .2 .0 * .2 .1 200
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Basin wide percent of average 150* 220
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .6 .0 * .4 .1 400
BLIND BULL SUM 8650 .2 .0 * .3 .1 300
EAST RIM DIVIDE 7930 .7 .0 * .8 .0
ELKHART PARK G.S. 9400 -M .0 * -M .1 *
GROS VENTRE SUMMIT 8775 .9 .0 * .7 .1 700
KENDALL R.S. 7740 .6 .0 * .6 .1 600
LOOMIS PARK 8240 1.0 .0 * .7 .1 700
NEW FORK LAKE 8340 .7 .0 * .7 .1 700
SNIDER BASIN 8250 .7 .0 * .6 .1 600
SPRING CREEK DIVIDE 9000 .6 .0 * .5 .1 500
TRIPLE PEAK 8500 .4 .0 * .5 .1 500
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Basin wide percent of average * 556
LOWER GREEN RIVER
HAMS FORK 7840 .3 .0 * .6 .0
HEWINTA 9500 .3 .0 * .5 .1 500
HICKERSON PARK 9150 .8 .0 * .7 .1 700
HOLE-IN-ROCK 9150 .1 .0 * .7 .1 700
INDIAN CREEK 9425 1.2 .0 * .8 .1 800
KELLEY R.S. 8180 .5 .0 * .4 .1 400
STEEL CREEK PARK 10100 -M .3 * -M .1 *
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Basin wide percent of average * 620
UPPER BEAR RIVER
BUG LAKE 7950 .5 .2 250* .7 .1 700
HAYDEN FORK 9400 .6 .1 600* 1.2 .1 1200
KELLEY R.S. 8180 .5 .0 * .4 .1 400
LILY LAKE 9050 1.2 .1 1200* .9 .1 900
MONTE CRISTO 8960 .0 .2 0* .6 .1 600
SALT RIVER SUMMIT 7600 .5 .0 * .5 .1 500
TRIAL LAKE 9960 1.3 .3 433* 1.2 .1 1200
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Basin wide percent of average 400* 786
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
If the Basin wide percent of average 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 Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average 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.
Reference period for average conditions is 1971-2000.
Provisional data, subject to revision.
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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.