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 , 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* .3 .3 100
COTTONWOOD CREEK 7600 .1 .0 * .8 .4 200
GRANITE CREEK 6770 .2 .0 * .7 .2 350
GRASSY LAKE 7265 .2 .1 200* .7 .5 140
GROS VENTRE SUMMIT 8775 .6 .2 300* .7 .2 350
LEWIS LAKE DIVIDE 7860 .3 .0 * .7 .4 175
PHILLIPS BENCH 8200 .5 .1 500* .8 .3 267
SALT RIVER SUMMIT 7600 .1 .0 * .8 .3 267
SNAKE RIVER STATION 6920 -M .0 * .4 .3 133
SPRING CREEK DIVIDE 9000 .7 .1 700* .8 .3 267
THUMB DIVIDE 7980 .2 .0 * .9 .3 300
TOGWOTEE PASS 9580 .7 .3 233* .6 .4 150
TWO OCEAN PLATEAU 9360 .8 .3 267* .5 .4 125
WILLOW CREEK 8450 .2 .1 200* .9 .5 180
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Basin wide percent of average 308* 200
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.0 .7 143* .7 .3 233
BLACK BEAR 8170 1.4 .4 350* 1.3 .5 260
CANYON 8090 .2 .1 200* .5 .2 250
FISHER CREEK 9100 .8 .5 160* .8 .4 200
MADISON PLATEAU 7750 .5 .3 167* .7 .3 233
NORTHEAST ENTRANCE 7350 .1 .0 * .3 .2 150
PARKER PEAK 9400 .3 .7 43* .8 .3 267
SYLVAN LAKE 8420 .8 .5 160* .8 .3 267
THUMB DIVIDE 7980 .2 .0 * .9 .3 300
TWO OCEAN PLATEAU 9360 .8 .3 267* .5 .4 125
WHISKEY CREEK 6800 .2 .1 200* .7 .3 233
WHITE MILL 8700 .8 .3 267* .7 .4 175
WOLVERINE 7650 .1 .0 * .7 .2 350
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Basin wide percent of average 174* 229
WIND RIVER
BURROUGHS CREEK 8750 .6 .2 300* .9 .2 450
COLD SPRINGS 9630 1.0 .2 500* 1.1 .3 367
DEER PARK 9700 .7 .4 175* .6 .3 200
HOBBS PARK 10100 1.7 .4 425* 1.3 .3 433
LITTLE WARM 9370 .8 .3 267* .6 .2 300
SOUTH PASS 9040 .4 .2 200* .6 .3 200
ST. LAWRENCE ALT 8620 1.3 .1 1300* 1.5 .2 750
TOGWOTEE PASS 9580 .7 .3 233* .6 .4 150
TOWNSEND CREEK 8700 .8 .1 800* 1.2 .3 400
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Basin wide percent of average 364* 336
BIGHORN BASIN
BALD MTN. 9380 .7 .9 78* .6 .3 200
BEAR TRAP MEADOW 8200 .0 .1 0* .4 .2 200
BLACKWATER 9780 1.1 .9 122* 1.0 .4 250
BONE SPRINGS DIV 9350 .7 .7 100* .7 .3 233
EVENING STAR 9200 .6 .6 100* .7 .4 175
GRAVE SPRINGS 8550 .5 .1 500* .5 .3 167
KIRWIN 9550 .8 .5 160* 1.0 .2 500
MARQUETTE 8760 .8 .5 160* 1.2 .3 400
MIDDLE POWDER 7760 .1 .3 33* .4 .3 133
OWL CREEK 8975 1.1 .2 550* .9 .2 450
POWDER RIVER PASS 9480 .4 .4 100* .6 .3 200
SHELL CREEK 9580 .6 1.0 60* .5 .3 167
SYLVAN LAKE 8420 .8 .5 160* .8 .3 267
SYLVAN ROAD 7120 .3 .0 * .5 .3 167
TIMBER CREEK 7950 .8 .0 * .9 .2 450
YOUNTS PEAK 8350 .4 .2 200* .6 .2 300
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Basin wide percent of average 125* 251
SHOSHONE RIVER
BLACKWATER 9780 1.1 .9 122* 1.0 .4 250
EVENING STAR 9200 .6 .6 100* .7 .4 175
KIRWIN 9550 .8 .5 160* 1.0 .2 500
MARQUETTE 8760 .8 .5 160* 1.2 .3 400
SYLVAN LAKE 8420 .8 .5 160* .8 .3 267
SYLVAN ROAD 7120 .3 .0 * .5 .3 167
YOUNTS PEAK 8350 .4 .2 200* .6 .2 300
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Basin wide percent of average 141* 276
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .1 0* .4 .2 200
BIG GOOSE 7990 .4 .1 400* .7 .3 233
BONE SPRINGS DIV 9350 .7 .7 100* .7 .3 233
BURGESS JUNCTION 7880 .6 .4 150* .8 .3 267
CLOUD PEAK RESERVOIR 9860 .3 .2 150* .6 .3 200
DOME LAKE 8880 .5 .4 125* .6 .3 200
GRAVE SPRINGS 8550 .5 .1 500* .5 .3 167
HANSEN SAWMILL 8360 .3 .1 300* .7 .2 350
MIDDLE POWDER 7760 .1 .3 33* .4 .3 133
POWDER RIVER PASS 9480 .4 .4 100* .6 .3 200
SUCKER CREEK 8880 .6 .3 200* .8 .3 267
TIE CREEK 6870 .2 .0 * .8 .3 267
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Basin wide percent of average 142* 224
BELLE FOURCHE
BLIND PARK 6890 .1 .0 * .5 .3 167
COLE CANYON 5910 -M -M * .1 -M *
NORTH RAPID CREEK 6130 .0 .0 100* .4 .3 133
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Basin wide percent of average * 150
UPPER N. PLATTE RIVER
COLUMBINE 9400 .8 .0 * 1.5 .3 500
DIVIDE PEAK 8800 .7 .3 233* 1.8 .4 450
ELK RIVER 8700 .0 .0 100* 1.2 .3 400
JOE WRIGHT 10120 .3 .3 100* 1.2 .5 240
NORTH FRENCH CREEK 10100 1.6 .5 320* 2.0 .5 400
OLD BATTLE 10000 2.2 .5 440* 2.3 .5 460
SAGE CREEK BASIN 7850 .1 .1 100* 1.4 -M *
SOUTH BRUSH CREEK 8400 .8 .1 800* 1.6 .3 533
TOWER 10500 2.4 .4 600* 2.6 .5 520
WEBBER SPRINGS 9200 .6 .2 300* 1.4 .4 350
WILLOW CREEK PASS 9540 .0 .1 0* .5 .3 167
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Basin wide percent of average 348* 403
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .6 .4 150* 1.9 .3 633
CASPER MTN. 7900 .0 .2 0* .9 .3 300
DEADMAN HILL 10220 .3 .4 75* .3 .3 100
DEER PARK 9700 .7 .4 175* .6 .3 200
LAPRELE CREEK 8320 -M .1 * -M .3 *
RENO HILL 8400 1.0 .2 500* 1.2 .3 400
ROACH 9700 .4 .1 400* .7 .3 233
SAND LAKE 10080 1.0 .7 143* 1.3 .4 325
SOUTH PASS 9040 .4 .2 200* .6 .3 200
WINDY PEAK 7840 .5 .0 * .9 .2 450
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Basin wide percent of average 169* 311
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 1.9 .3 633
DIVIDE PEAK 8800 .7 .3 233* 1.8 .4 450
OLD BATTLE 10000 2.2 .5 440* 2.3 .5 460
SANDSTONE RS 8150 .0 .0 100* 1.6 .3 533
WHISKEY PARK 8950 .8 .1 800* 1.6 .4 400
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Basin wide percent of average 411* 484
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .7 .1 700* .7 .2 350
BLIND BULL SUM 8650 .4 .1 400* .6 .3 200
EAST RIM DIVIDE 7930 .5 .0 * .9 .2 450
ELKHART PARK G.S. 9400 1.1 .1 1100* 1.0 .3 333
GROS VENTRE SUMMIT 8775 .6 .2 300* .7 .2 350
KENDALL R.S. 7740 .2 .0 * .7 .2 350
LOOMIS PARK 8240 .3 .1 300* .8 .2 400
NEW FORK LAKE 8340 .3 .0 * .7 .2 350
SNIDER BASIN 8250 .5 .0 * .7 .2 350
SPRING CREEK DIVIDE 9000 .7 .1 700* .8 .3 267
TRIPLE PEAK 8500 .1 .1 100* 1.0 .3 333
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Basin wide percent of average 488* 331
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* .9 .2 450
HEWINTA 9500 .0 .1 0* .7 .3 233
HICKERSON PARK 9150 .5 .0 * 1.1 .2 550
HOLE-IN-ROCK 9150 .0 .0 100* .9 .2 450
INDIAN CREEK 9425 1.5 .1 1500* 1.4 .3 467
KELLEY R.S. 8180 .5 .1 500* .7 .3 233
STEEL CREEK PARK 10100 1.0 .4 250* .3 .3 100
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Basin wide percent of average 429* 333
UPPER BEAR RIVER
BUG LAKE 7950 .1 .3 33* .9 .3 300
HAYDEN FORK 9400 .0 .2 0* 1.4 .3 467
KELLEY R.S. 8180 .5 .1 500* .7 .3 233
LILY LAKE 9050 .8 .2 400* 1.2 .3 400
MONTE CRISTO 8960 -M .3 * .9 .4 225
SALT RIVER SUMMIT 7600 .1 .0 * .8 .3 267
TRIAL LAKE 9960 1.0 .4 250* 1.4 .4 350
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Basin wide percent of average 200* 317
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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.