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 SUNDAY: OCTOBER 6 , 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* .4 .3 133
COTTONWOOD CREEK 7600 .1 .0 * .9 .5 180
GRANITE CREEK 6770 .1 .0 * .9 .3 300
GRASSY LAKE 7265 .0 .1 0* 1.1 .6 183
GROS VENTRE SUMMIT 8775 .7 .2 350* .8 .3 267
LEWIS LAKE DIVIDE 7860 .1 .0 * 1.1 .5 220
PHILLIPS BENCH 8200 .3 .1 300* .9 .4 225
SALT RIVER SUMMIT 7600 .1 .0 * .8 .3 267
SNAKE RIVER STATION 6920 -M .0 * .7 .4 175
SPRING CREEK DIVIDE 9000 .8 .1 800* .9 .4 225
THUMB DIVIDE 7980 .0 .0 100* .9 .3 300
TOGWOTEE PASS 9580 .9 .4 225* .8 .5 160
TWO OCEAN PLATEAU 9360 1.1 .4 275* .8 .5 160
WILLOW CREEK 8450 .0 .1 0* .9 .6 150
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Basin wide percent of average 271* 202
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.3 .7 186* .9 .4 225
BLACK BEAR 8170 1.4 .5 280* 1.5 .6 250
CANYON 8090 .2 .1 200* .7 .3 233
FISHER CREEK 9100 .9 .5 180* .9 .5 180
MADISON PLATEAU 7750 .5 .3 167* .7 .4 175
NORTHEAST ENTRANCE 7350 .1 .0 * .4 .3 133
PARKER PEAK 9400 .6 .8 75* 1.0 .4 250
SYLVAN LAKE 8420 1.1 .6 183* 1.2 .4 300
THUMB DIVIDE 7980 .0 .0 100* .9 .3 300
TWO OCEAN PLATEAU 9360 1.1 .4 275* .8 .5 160
WHISKEY CREEK 6800 .1 .1 100* .7 .4 175
WHITE MILL 8700 .9 .4 225* .8 .5 160
WOLVERINE 7650 .1 .0 * .7 .3 233
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Basin wide percent of average 184* 211
WIND RIVER
BURROUGHS CREEK 8750 .8 .2 400* 1.1 .3 367
COLD SPRINGS 9630 1.0 .2 500* 1.3 .3 433
DEER PARK 9700 .7 .5 140* .6 .4 150
HOBBS PARK 10100 1.7 .4 425* 1.5 .4 375
LITTLE WARM 9370 .9 .3 300* .7 .3 233
SOUTH PASS 9040 .4 .2 200* .6 .4 150
ST. LAWRENCE ALT 8620 1.3 .1 1300* 1.5 .3 500
TOGWOTEE PASS 9580 .9 .4 225* .8 .5 160
TOWNSEND CREEK 8700 .8 .1 800* 1.2 .4 300
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Basin wide percent of average 354* 282
BIGHORN BASIN
BALD MTN. 9380 1.1 .9 122* 1.0 .4 250
BEAR TRAP MEADOW 8200 .0 .1 0* .5 .3 167
BLACKWATER 9780 1.6 .9 178* 1.4 .5 280
BONE SPRINGS DIV 9350 1.3 .8 162* 1.3 .4 325
EVENING STAR 9200 .9 .7 129* 1.0 .5 200
GRAVE SPRINGS 8550 .4 .1 400* .5 .4 125
KIRWIN 9550 .9 .5 180* 1.2 .3 400
MARQUETTE 8760 .8 .6 133* 1.1 .4 275
MIDDLE POWDER 7760 .0 .3 0* .5 .4 125
OWL CREEK 8975 1.1 .2 550* .9 .2 450
POWDER RIVER PASS 9480 .5 .4 125* .7 .3 233
SHELL CREEK 9580 1.0 1.0 100* 1.0 .3 333
SYLVAN LAKE 8420 1.1 .6 183* 1.2 .4 300
SYLVAN ROAD 7120 .1 .0 * 1.0 .4 250
TIMBER CREEK 7950 .7 .0 * .9 .3 300
YOUNTS PEAK 8350 .7 .3 233* .8 .3 267
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Basin wide percent of average 154* 259
SHOSHONE RIVER
BLACKWATER 9780 1.6 .9 178* 1.4 .5 280
EVENING STAR 9200 .9 .7 129* 1.0 .5 200
KIRWIN 9550 .9 .5 180* 1.2 .3 400
MARQUETTE 8760 .8 .6 133* 1.1 .4 275
SYLVAN LAKE 8420 1.1 .6 183* 1.2 .4 300
SYLVAN ROAD 7120 .1 .0 * 1.0 .4 250
YOUNTS PEAK 8350 .7 .3 233* .8 .3 267
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Basin wide percent of average 167* 275
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .1 0* .5 .3 167
BIG GOOSE 7990 .3 .1 300* .8 .4 200
BONE SPRINGS DIV 9350 1.3 .8 162* 1.3 .4 325
BURGESS JUNCTION 7880 .7 .4 175* .9 .4 225
CLOUD PEAK RESERVOIR 9860 .4 .2 200* .8 .4 200
DOME LAKE 8880 .7 .4 175* .9 .4 225
GRAVE SPRINGS 8550 .4 .1 400* .5 .4 125
HANSEN SAWMILL 8360 .2 .1 200* .7 .3 233
MIDDLE POWDER 7760 .0 .3 0* .5 .4 125
POWDER RIVER PASS 9480 .5 .4 125* .7 .3 233
SUCKER CREEK 8880 .9 .3 300* 1.0 .4 250
TIE CREEK 6870 .0 .0 100* .9 .4 225
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Basin wide percent of average 169* 211
BELLE FOURCHE
BLIND PARK 6890 .1 .0 * .7 .4 175
COLE CANYON 5910 -M -M * .1 -M *
NORTH RAPID CREEK 6130 .0 .0 100* .5 .4 125
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Basin wide percent of average * 150
UPPER N. PLATTE RIVER
COLUMBINE 9400 .4 .0 * 1.6 .4 400
DIVIDE PEAK 8800 .6 .3 200* 1.9 .5 380
ELK RIVER 8700 .0 .0 100* 1.2 .4 300
JOE WRIGHT 10120 .3 .4 75* 1.2 .6 200
NORTH FRENCH CREEK 10100 1.6 .6 267* 2.0 .6 333
OLD BATTLE 10000 2.3 .5 460* 2.5 .6 417
SAGE CREEK BASIN 7850 .1 .1 100* 1.4 -M *
SOUTH BRUSH CREEK 8400 .6 .1 600* 1.7 .4 425
TOWER 10500 2.6 .4 650* 2.9 .7 414
WEBBER SPRINGS 9200 .4 .2 200* 1.5 .5 300
WILLOW CREEK PASS 9540 .0 .1 0* .6 .3 200
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Basin wide percent of average 315* 342
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .7 .4 175* 1.6 .4 400
CASPER MTN. 7900 .0 .2 0* .9 .4 225
DEADMAN HILL 10220 .2 .4 50* .4 .4 100
DEER PARK 9700 .7 .5 140* .6 .4 150
LAPRELE CREEK 8320 -M .1 * -M .3 *
RENO HILL 8400 .9 .2 450* 1.3 .4 325
ROACH 9700 .3 .1 300* .7 .4 175
SAND LAKE 10080 1.0 .7 143* 1.4 .5 280
SOUTH PASS 9040 .4 .2 200* .6 .4 150
WINDY PEAK 7840 .2 .0 * .9 .3 300
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Basin wide percent of average 156* 233
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 1.9 .3 633
DIVIDE PEAK 8800 .6 .3 200* 1.9 .5 380
OLD BATTLE 10000 2.3 .5 460* 2.5 .6 417
SANDSTONE RS 8150 .0 .0 100* 1.6 .4 400
WHISKEY PARK 8950 .9 .2 450* 1.8 .5 360
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Basin wide percent of average 380* 422
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .8 .1 800* .7 .3 233
BLIND BULL SUM 8650 .6 .1 600* .7 .4 175
EAST RIM DIVIDE 7930 .4 .0 * .9 .2 450
ELKHART PARK G.S. 9400 1.1 .1 1100* 1.0 .3 333
GROS VENTRE SUMMIT 8775 .7 .2 350* .8 .3 267
KENDALL R.S. 7740 .2 .0 * .9 .3 300
LOOMIS PARK 8240 .3 .1 300* .9 .3 300
NEW FORK LAKE 8340 .2 .0 * .7 .3 233
SNIDER BASIN 8250 .3 .0 * .8 .3 267
SPRING CREEK DIVIDE 9000 .8 .1 800* .9 .4 225
TRIPLE PEAK 8500 .0 .1 0* 1.0 .4 250
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Basin wide percent of average 538* 266
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 1.0 .2 500
HEWINTA 9500 .0 .1 0* .7 .4 175
HICKERSON PARK 9150 .2 .0 * 1.2 .3 400
HOLE-IN-ROCK 9150 .0 .0 100* 1.2 .3 400
INDIAN CREEK 9425 1.6 .1 1600* 1.4 .4 350
KELLEY R.S. 8180 .3 .1 300* .7 .4 175
STEEL CREEK PARK 10100 1.0 .5 200* .5 .4 125
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Basin wide percent of average 363* 279
UPPER BEAR RIVER
BUG LAKE 7950 .0 .3 0* .9 .4 225
HAYDEN FORK 9400 -M .2 * 1.5 .4 375
KELLEY R.S. 8180 .3 .1 300* .7 .4 175
LILY LAKE 9050 .5 .2 250* 1.3 .4 325
MONTE CRISTO 8960 -M .4 * .9 .5 180
SALT RIVER SUMMIT 7600 .1 .0 * .8 .3 267
TRIAL LAKE 9960 .9 .5 180* 1.4 .5 280
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Basin wide percent of average 155* 259
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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.