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 THURSDAY: OCTOBER 10 , 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 .1 0* .4 .6 67
COTTONWOOD CREEK 7600 .1 .1 100* .8 .9 89
GRANITE CREEK 6770 .0 .1 0* .9 .5 180
GRASSY LAKE 7265 .0 .2 0* 1.1 1.0 110
GROS VENTRE SUMMIT 8775 .7 .4 175* .8 .6 133
LEWIS LAKE DIVIDE 7860 .0 .1 0* 1.1 1.0 110
PHILLIPS BENCH 8200 .0 .1 0* .9 .7 129
SALT RIVER SUMMIT 7600 .1 .0 * .8 .6 133
SNAKE RIVER STATION 6920 -M .0 * .7 .7 100
SPRING CREEK DIVIDE 9000 .6 .2 300* .8 .8 100
THUMB DIVIDE 7980 .0 .1 0* .9 .6 150
TOGWOTEE PASS 9580 .8 .6 133* .7 .8 87
TWO OCEAN PLATEAU 9360 1.1 .8 138* .9 .9 100
WILLOW CREEK 8450 .0 .3 0* .9 1.1 82
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Basin wide percent of average 106* 108
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.1 1.0 110* 1.0 .6 167
BLACK BEAR 8170 1.3 .6 217* 1.5 1.0 150
CANYON 8090 .1 .2 50* .6 .6 100
FISHER CREEK 9100 .7 .8 87* .9 1.0 90
MADISON PLATEAU 7750 .0 .3 0* .8 .8 100
NORTHEAST ENTRANCE 7350 .0 .1 0* .4 .5 80
PARKER PEAK 9400 .6 1.0 60* 1.1 .7 157
SYLVAN LAKE 8420 .5 .7 71* 1.2 .8 150
THUMB DIVIDE 7980 .0 .1 0* .9 .6 150
TWO OCEAN PLATEAU 9360 1.1 .8 138* .9 .9 100
WHISKEY CREEK 6800 .1 .1 100* .6 .7 86
WHITE MILL 8700 .9 .5 180* .9 .8 112
WOLVERINE 7650 .1 .1 100* .6 .6 100
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Basin wide percent of average 103* 119
WIND RIVER
BURROUGHS CREEK 8750 .7 .3 233* .9 .5 180
COLD SPRINGS 9630 .4 .2 200* 1.1 .6 183
DEER PARK 9700 .7 .6 117* .7 .8 87
HOBBS PARK 10100 1.7 .6 283* 1.6 .6 267
LITTLE WARM 9370 .5 .3 167* .6 .5 120
SOUTH PASS 9040 .1 .3 33* .7 .6 117
ST. LAWRENCE ALT 8620 1.0 .1 1000* 1.5 .5 300
TOGWOTEE PASS 9580 .8 .6 133* .7 .8 87
TOWNSEND CREEK 8700 .6 .2 300* 1.1 .6 183
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Basin wide percent of average 203* 162
BIGHORN BASIN
BALD MTN. 9380 1.1 1.2 92* 1.1 .7 157
BEAR TRAP MEADOW 8200 .0 .2 0* .5 .5 100
BLACKWATER 9780 1.5 1.2 125* 1.4 .8 175
BONE SPRINGS DIV 9350 1.3 1.0 130* 1.4 .8 175
EVENING STAR 9200 .8 .9 89* 1.1 .8 138
GRAVE SPRINGS 8550 .0 .2 0* .6 .6 100
KIRWIN 9550 .9 .7 129* 1.1 .6 183
MARQUETTE 8760 .8 .7 114* .8 .7 114
MIDDLE POWDER 7760 .0 .5 0* .5 .8 62
OWL CREEK 8975 1.1 .3 367* 1.0 .3 333
POWDER RIVER PASS 9480 .4 .4 100* .8 .6 133
SHELL CREEK 9580 1.2 1.3 92* 1.1 .6 183
SYLVAN LAKE 8420 .5 .7 71* 1.2 .8 150
SYLVAN ROAD 7120 .0 .1 0* 1.1 .6 183
TIMBER CREEK 7950 .1 .1 100* .9 .5 180
YOUNTS PEAK 8350 .7 .4 175* .7 .6 117
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Basin wide percent of average 105* 149
SHOSHONE RIVER
BLACKWATER 9780 1.5 1.2 125* 1.4 .8 175
EVENING STAR 9200 .8 .9 89* 1.1 .8 138
KIRWIN 9550 .9 .7 129* 1.1 .6 183
MARQUETTE 8760 .8 .7 114* .8 .7 114
SYLVAN LAKE 8420 .5 .7 71* 1.2 .8 150
SYLVAN ROAD 7120 .0 .1 0* 1.1 .6 183
YOUNTS PEAK 8350 .7 .4 175* .7 .6 117
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Basin wide percent of average 111* 151
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .2 0* .5 .5 100
BIG GOOSE 7990 .1 .2 50* 1.0 .6 167
BONE SPRINGS DIV 9350 1.3 1.0 130* 1.4 .8 175
BURGESS JUNCTION 7880 .3 .5 60* 1.1 .7 157
CLOUD PEAK RESERVOIR 9860 .2 .3 67* .9 .8 112
DOME LAKE 8880 .7 .6 117* .9 .8 112
GRAVE SPRINGS 8550 .0 .2 0* .6 .6 100
HANSEN SAWMILL 8360 .3 .2 150* .9 .6 150
MIDDLE POWDER 7760 .0 .5 0* .5 .8 62
POWDER RIVER PASS 9480 .4 .4 100* .8 .6 133
SUCKER CREEK 8880 .7 .4 175* 1.0 .7 143
TIE CREEK 6870 .0 .0 100* 1.0 .8 125
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Basin wide percent of average 89* 128
BELLE FOURCHE
BLIND PARK 6890 .1 .0 * .8 .8 100
COLE CANYON 5910 1.6 -M * .4 -M *
NORTH RAPID CREEK 6130 .0 .1 0* .7 .8 87
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Basin wide percent of average 0* 94
UPPER N. PLATTE RIVER
COLUMBINE 9400 .3 .0 * 1.4 .7 200
DIVIDE PEAK 8800 .1 .5 20* 1.9 .8 237
ELK RIVER 8700 .0 .1 0* 1.2 .7 171
JOE WRIGHT 10120 .5 .6 83* 1.2 1.0 120
NORTH FRENCH CREEK 10100 1.2 .9 133* 2.0 1.0 200
OLD BATTLE 10000 2.1 .8 262* 2.6 1.1 236
SAGE CREEK BASIN 7850 .0 .2 0* 1.4 -M *
SOUTH BRUSH CREEK 8400 .1 .1 100* 1.7 .8 212
TOWER 10500 2.1 .7 300* 2.8 1.2 233
WEBBER SPRINGS 9200 .1 .4 25* 1.5 .9 167
WILLOW CREEK PASS 9540 .1 .2 50* .5 .6 83
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Basin wide percent of average 140* 191
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .2 .6 33* 1.2 .8 150
CASPER MTN. 7900 .0 .4 0* 1.0 .8 125
DEADMAN HILL 10220 -M .6 * .4 .8 50
DEER PARK 9700 .7 .6 117* .7 .8 87
LAPRELE CREEK 8320 .0 .2 0* .8 .6 133
RENO HILL 8400 .5 .4 125* -M .8 *
ROACH 9700 .1 .2 50* .7 .7 100
SAND LAKE 10080 .8 1.0 80* 1.4 .9 156
SOUTH PASS 9040 .1 .3 33* .7 .6 117
WINDY PEAK 7840 .1 .1 100* .9 .5 180
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Basin wide percent of average 66* 120
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 1.8 .6 300
DIVIDE PEAK 8800 .1 .5 20* 1.9 .8 237
OLD BATTLE 10000 2.1 .8 262* 2.6 1.1 236
SANDSTONE RS 8150 .0 .1 0* 1.5 .7 214
WHISKEY PARK 8950 .3 .3 100* 1.7 .9 189
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Basin wide percent of average 147* 232
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .8 .3 267* .7 .6 117
BLIND BULL SUM 8650 .2 .3 67* .7 .7 100
EAST RIM DIVIDE 7930 .0 .0 100* 1.0 .4 250
ELKHART PARK G.S. 9400 1.0 .1 1000* 1.0 .6 167
GROS VENTRE SUMMIT 8775 .7 .4 175* .8 .6 133
KENDALL R.S. 7740 .1 .0 * .8 .5 160
LOOMIS PARK 8240 .3 .1 300* .9 .6 150
NEW FORK LAKE 8340 .1 .0 * .5 .5 100
SNIDER BASIN 8250 .1 .1 100* .8 .5 160
SPRING CREEK DIVIDE 9000 .6 .2 300* .8 .8 100
TRIPLE PEAK 8500 .0 .1 0* 1.0 .7 143
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Basin wide percent of average 231* 138
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* .9 .4 225
HEWINTA 9500 .0 .3 0* .9 .7 129
HICKERSON PARK 9150 .2 .0 * 1.1 .5 220
HOLE-IN-ROCK 9150 .0 .0 100* 1.1 .5 220
INDIAN CREEK 9425 1.3 .3 433* 1.5 .8 188
KELLEY R.S. 8180 .1 .1 100* .7 .6 117
STEEL CREEK PARK 10100 .3 .6 50* .5 .7 71
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Basin wide percent of average 131* 160
UPPER BEAR RIVER
BUG LAKE 7950 .0 .4 0* .9 .7 129
HAYDEN FORK 9400 .0 .3 0* 1.3 .7 186
KELLEY R.S. 8180 .1 .1 100* .7 .6 117
LILY LAKE 9050 .1 .3 33* 1.2 .7 171
MONTE CRISTO 8960 -M .5 * .8 .8 100
SALT RIVER SUMMIT 7600 .1 .0 * .8 .6 133
TRIAL LAKE 9960 .1 .6 17* 1.3 .8 162
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Basin wide percent of average 18* 143
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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.