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 5 , 2007
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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 .2 .0 * .5 .3 167
COTTONWOOD CREEK 7600 .0 .0 100* .2 .4 50
GRANITE CREEK 6770 .1 .0 * .4 .2 200
GRASSY LAKE 7265 .2 .1 200* .6 .5 120
GROS VENTRE SUMMIT 8750 .2 .2 100* .4 .2 200
LEWIS LAKE DIVIDE 7850 .3 .0 * -M .4 *
PHILLIPS BENCH 8200 .0 .1 0* .7 .3 233
SALT RIVER SUMMIT 7600 .1 .0 * .1 .3 33
SNAKE RIVER STATION 6920 .1 .0 * .7 .3 233
SPRING CREEK DIVIDE 9000 .2 .1 200* .2 .3 67
THUMB DIVIDE 7980 .2 .0 * .7 .3 233
TOGWOTEE PASS 9580 .8 .3 267* 1.1 .4 275
TWO OCEAN PLATEAU 9240 1.2 .3 400* 1.1 .4 275
WILLOW CREEK 8450 .1 .1 100* .2 .5 40
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Basin wide percent of average 225* 157
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.1 .7 157* .9 .3 300
BLACK BEAR 8170 .5 .4 125* .9 .5 180
CANYON 8090 .4 .1 400* .6 .2 300
FISHER CREEK 9100 2.1 .5 420* 1.9 .4 475
MADISON PLATEAU 7750 .4 .3 133* .9 .3 300
NORTHEAST ENTRANCE 7350 .4 .0 * .7 .2 350
PARKER PEAK 9400 1.0 .7 143* .0 .3 0
SYLVAN LAKE 8420 .4 .5 80* .8 .3 267
THUMB DIVIDE 7980 .2 .0 * .7 .3 233
TWO OCEAN PLATEAU 9240 1.2 .3 400* 1.1 .4 275
WHISKEY CREEK 6800 .3 .1 300* 1.0 .3 333
WHITE MILL 8700 1.3 .3 433* 1.2 .4 300
WOLVERINE 7650 .3 .0 * .7 .2 350
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Basin wide percent of average 223* 278
WIND RIVER
BURROUGHS CREEK 8750 .4 .2 200* .7 .2 350
COLD SPRINGS 9630 .1 .2 50* .2 .3 67
DEER PARK 9700 .2 .4 50* .2 .3 67
HOBBS PARK 10100 .1 .4 25* .4 .3 133
LITTLE WARM 9370 .1 .3 33* .6 .2 300
SOUTH PASS 9040 .2 .2 100* .1 .3 33
ST. LAWRENCE ALT 8620 .2 .1 200* .1 .2 50
TOGWOTEE PASS 9580 .8 .3 267* 1.1 .4 275
TOWNSEND CREEK 8700 .2 .1 200* .2 .3 67
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Basin wide percent of average 105* 144
BIGHORN BASIN
BALD MTN. 9380 .5 .9 56* .3 .3 100
BEAR TRAP MEADOW 8200 .2 .1 200* .3 .2 150
BLACKWATER 9780 .9 .9 100* .9 .4 225
BONE SPRINGS DIV 9350 -M .7 * -M .3 *
EVENING STAR 9200 1.1 .6 183* .2 .4 50
GRAVE SPRINGS 8550 .1 .1 100* .3 .3 100
KIRWIN 9550 .9 .5 180* .9 .2 450
MARQUETTE 8760 .1 .5 20* .1 .3 33
MIDDLE POWDER 7760 .3 .3 100* .6 .3 200
OWL CREEK 8975 .1 .2 50* .3 .2 150
POWDER RIVER PASS 9480 .2 .4 50* .7 .3 233
SHELL CREEK 9580 1.5 1.0 150* 1.0 .3 333
SYLVAN LAKE 8420 .4 .5 80* .8 .3 267
SYLVAN ROAD 7120 .0 .0 100* .5 .3 167
TIMBER CREEK 7950 .0 .0 100* .3 .2 150
YOUNTS PEAK 8350 .3 .2 150* .8 .2 400
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Basin wide percent of average 106* 190
SHOSHONE RIVER
BLACKWATER 9780 .9 .9 100* .9 .4 225
EVENING STAR 9200 1.1 .6 183* .2 .4 50
KIRWIN 9550 .9 .5 180* .9 .2 450
MARQUETTE 8760 .1 .5 20* .1 .3 33
SYLVAN LAKE 8420 .4 .5 80* .8 .3 267
SYLVAN ROAD 7120 .0 .0 100* .5 .3 167
YOUNTS PEAK 8350 .3 .2 150* .8 .2 400
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Basin wide percent of average 116* 200
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .2 .1 200* .3 .2 150
BIG GOOSE 7990 .2 .1 200* .3 .3 100
BONE SPRINGS DIV 9350 -M .7 * -M .3 *
BURGESS JUNCTION 7880 .0 .4 0* .2 .3 67
CLOUD PEAK RESERVOIR 9860 .3 .2 150* .8 .3 267
DOME LAKE 8880 .4 .4 100* .7 .3 233
GRAVE SPRINGS 8550 .1 .1 100* .3 .3 100
HANSEN SAWMILL 8360 .2 .1 200* .5 .2 250
MIDDLE POWDER 7760 .3 .3 100* .6 .3 200
POWDER RIVER PASS 9480 .2 .4 50* .7 .3 233
SUCKER CREEK 8880 .1 .3 33* .3 .3 100
TIE CREEK 6870 .0 .0 100* .2 .3 67
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Basin wide percent of average 83* 158
BELLE FOURCHE
BLIND PARK 6890 .1 .0 * .2 .3 67
COLE CANYON 5910 .0 .0 100* .0 -M *
NORTH RAPID CREEK 6130 .0 .0 100* .1 .3 33
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Basin wide percent of average * 50
UPPER N. PLATTE RIVER
COLUMBINE 9160 .1 .0 * 1.4 .3 467
DIVIDE PEAK 8860 -M .3 * -M .4 *
ELK RIVER 8700 .0 .0 100* .6 .3 200
JOE WRIGHT 10120 .3 .3 100* 1.4 .5 280
NORTH FRENCH CREEK 10130 .5 .5 100* .8 .5 160
OLD BATTLE 9920 .5 .5 100* 1.1 .5 220
SAGE CREEK BASIN 7850 .0 .1 0* .3 .2 150
SOUTH BRUSH CREEK 8440 .2 .1 200* .8 .3 267
TOWER 10500 .3 .4 75* 1.5 .5 300
WEBBER SPRINGS 9250 .0 .2 0* .7 .4 175
WILLOW CREEK PASS 9540 .2 .1 200* .9 .3 300
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Basin wide percent of average 91* 250
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 .0 .4 0* .4 .3 133
CASPER MTN. 7850 .1 .2 50* .5 .3 167
DEADMAN HILL 10220 .5 .4 125* .5 .3 167
DEER PARK 9700 .2 .4 50* .2 .3 67
LAPRELE CREEK 8375 .0 .1 0* .3 .3 100
RENO HILL 8500 .0 .2 0* .3 .3 100
ROACH 9700 .1 .1 100* .7 .3 233
SAND LAKE 10050 .8 .7 114* .7 .4 175
SOUTH PASS 9040 .2 .2 100* .1 .3 33
WINDY PEAK 7900 .0 .0 100* .2 .2 100
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Basin wide percent of average 70* 130
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 .0 * .5 .3 167
DIVIDE PEAK 8860 -M .3 * -M .4 *
OLD BATTLE 9920 .5 .5 100* 1.1 .5 220
SANDSTONE RS 8150 .0 .0 100* .4 .3 133
WHISKEY PARK 8950 .0 .1 0* .7 .4 175
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Basin wide percent of average 83* 180
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .2 .1 200* .2 .2 100
BLIND BULL SUM 8900 .0 .1 0* .2 .3 67
EAST RIM DIVIDE 7930 .0 .0 100* .2 .2 100
ELKHART PARK G.S. 9400 .0 .1 0* .9 .3 300
GROS VENTRE SUMMIT 8750 .2 .2 100* .4 .2 200
KENDALL R.S. 7740 .1 .0 * .2 .2 100
LOOMIS PARK 8240 .1 .1 100* .1 .2 50
NEW FORK LAKE 8340 .1 .0 * .3 .2 150
SNIDER BASIN 8060 .3 .0 * .1 .2 50
SPRING CREEK DIVIDE 9000 .2 .1 200* .2 .3 67
TRIPLE PEAK 8500 .2 .1 200* .4 .3 133
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Basin wide percent of average 112* 123
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* .1 .2 50
HEWINTA 9500 .0 .1 0* .8 .3 267
HICKERSON PARK 9100 .1 .0 * .4 .2 200
HOLE-IN-ROCK 9150 .1 .0 * .5 .2 250
INDIAN CREEK 9425 .2 .1 200* .2 .3 67
KELLEY R.S. 8180 .1 .1 100* .2 .3 67
STEEL CREEK PARK 10100 1.3 .4 325* .7 .3 233
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Basin wide percent of average 229* 161
UPPER BEAR RIVER
BUG LAKE 7950 .1 .3 33* .4 .3 133
HAYDEN FORK 9100 .1 .2 50* .6 .3 200
KELLEY R.S. 8180 .1 .1 100* .2 .3 67
LILY LAKE 9050 .0 .2 0* .7 .3 233
MONTE CRISTO 8960 .0 .3 0* .2 .4 50
SALT RIVER SUMMIT 7600 .1 .0 * .1 .3 33
TRIAL LAKE 9960 .1 .4 25* .1 .4 25
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Basin wide percent of average 27* 100
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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.