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 13 , 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* .5 .8 62
COTTONWOOD CREEK 7600 .1 .1 100* .9 1.2 75
GRANITE CREEK 6770 .0 .1 0* 1.0 .7 143
GRASSY LAKE 7265 .0 .3 0* 1.2 1.4 86
GROS VENTRE SUMMIT 8775 .7 .5 140* .9 .7 129
LEWIS LAKE DIVIDE 7860 .0 .1 0* 1.2 1.3 92
PHILLIPS BENCH 8200 .0 .2 0* .8 1.0 80
SALT RIVER SUMMIT 7600 .0 .0 100* .8 .8 100
SNAKE RIVER STATION 6920 -M .0 * .8 .9 89
SPRING CREEK DIVIDE 9000 .5 .3 167* 1.0 1.0 100
THUMB DIVIDE 7980 .0 .1 0* 1.2 .8 150
TOGWOTEE PASS 9580 .8 .9 89* .8 1.1 73
TWO OCEAN PLATEAU 9360 1.4 1.0 140* 1.2 1.2 100
WILLOW CREEK 8450 .0 .3 0* 1.0 1.5 67
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Basin wide percent of average 87* 92
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.7 1.2 142* 1.6 .9 178
BLACK BEAR 8170 1.5 .7 214* 1.8 1.4 129
CANYON 8090 .5 .2 250* 1.1 .7 157
FISHER CREEK 9100 1.4 .9 156* 1.5 1.3 115
MADISON PLATEAU 7750 .3 .4 75* 1.1 1.0 110
NORTHEAST ENTRANCE 7350 .1 .1 100* .8 .6 133
PARKER PEAK 9400 1.3 1.1 118* 2.2 .9 244
SYLVAN LAKE 8420 .6 .8 75* 1.7 1.0 170
THUMB DIVIDE 7980 .0 .1 0* 1.2 .8 150
TWO OCEAN PLATEAU 9360 1.4 1.0 140* 1.2 1.2 100
WHISKEY CREEK 6800 .3 .1 300* .7 .9 78
WHITE MILL 8700 1.2 .6 200* 1.2 1.1 109
WOLVERINE 7650 .3 .1 300* 1.8 .7 257
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Basin wide percent of average 145* 143
WIND RIVER
BURROUGHS CREEK 8750 .6 .3 200* 1.0 .7 143
COLD SPRINGS 9630 .3 .2 150* 1.3 .8 162
DEER PARK 9700 .4 .7 57* .6 1.0 60
HOBBS PARK 10100 1.8 .6 300* 1.6 .9 178
LITTLE WARM 9370 .3 .4 75* .7 .7 100
SOUTH PASS 9040 .0 .4 0* .6 .9 67
ST. LAWRENCE ALT 8620 .4 .1 400* 1.5 .7 214
TOGWOTEE PASS 9580 .8 .9 89* .8 1.1 73
TOWNSEND CREEK 8700 .0 .3 0* 1.4 .9 156
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Basin wide percent of average 118* 123
BIGHORN BASIN
BALD MTN. 9380 1.6 1.4 114* 1.5 1.0 150
BEAR TRAP MEADOW 8200 .2 .2 100* 1.0 .7 143
BLACKWATER 9780 2.3 1.4 164* 2.2 1.1 200
BONE SPRINGS DIV 9350 1.8 1.2 150* 1.6 1.0 160
EVENING STAR 9200 1.1 1.1 100* 1.5 1.1 136
GRAVE SPRINGS 8550 .1 .2 50* .9 .9 100
KIRWIN 9550 .7 .7 100* 1.1 .7 157
MARQUETTE 8760 1.1 .8 138* 1.3 .9 144
MIDDLE POWDER 7760 .5 .5 100* .9 1.0 90
OWL CREEK 8975 1.1 .3 367* 1.1 .5 220
POWDER RIVER PASS 9480 .7 .5 140* 1.3 .8 162
SHELL CREEK 9580 1.4 1.5 93* 1.6 .8 200
SYLVAN LAKE 8420 .6 .8 75* 1.7 1.0 170
SYLVAN ROAD 7120 .2 .1 200* 1.5 .9 167
TIMBER CREEK 7950 .1 .1 100* 1.1 .7 157
YOUNTS PEAK 8350 .7 .5 140* .7 .7 100
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Basin wide percent of average 126* 152
SHOSHONE RIVER
BLACKWATER 9780 2.3 1.4 164* 2.2 1.1 200
EVENING STAR 9200 1.1 1.1 100* 1.5 1.1 136
KIRWIN 9550 .7 .7 100* 1.1 .7 157
MARQUETTE 8760 1.1 .8 138* 1.3 .9 144
SYLVAN LAKE 8420 .6 .8 75* 1.7 1.0 170
SYLVAN ROAD 7120 .2 .1 200* 1.5 .9 167
YOUNTS PEAK 8350 .7 .5 140* .7 .7 100
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Basin wide percent of average 124* 156
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .2 .2 100* 1.0 .7 143
BIG GOOSE 7990 .4 .3 133* 1.2 .9 133
BONE SPRINGS DIV 9350 1.8 1.2 150* 1.6 1.0 160
BURGESS JUNCTION 7880 .5 .6 83* 1.3 .9 144
CLOUD PEAK RESERVOIR 9860 .5 .4 125* 1.4 1.0 140
DOME LAKE 8880 1.0 .6 167* 1.5 1.0 150
GRAVE SPRINGS 8550 .1 .2 50* .9 .9 100
HANSEN SAWMILL 8360 .5 .2 250* 1.1 .7 157
MIDDLE POWDER 7760 .5 .5 100* .9 1.0 90
POWDER RIVER PASS 9480 .7 .5 140* 1.3 .8 162
SUCKER CREEK 8880 .7 .5 140* 1.6 1.0 160
TIE CREEK 6870 .1 .0 * 1.2 1.0 120
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Basin wide percent of average 133* 138
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* .9 1.0 90
COLE CANYON 5910 .0 -M * .3 -M *
NORTH RAPID CREEK 6130 .1 .1 100* .8 1.0 80
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Basin wide percent of average 100* 85
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 .0 100* 1.3 1.0 130
DIVIDE PEAK 8800 .0 .6 0* 2.0 1.1 182
ELK RIVER 8700 .0 .1 0* 1.3 .9 144
JOE WRIGHT 10120 .3 .7 43* 1.1 1.4 79
NORTH FRENCH CREEK 10100 1.0 1.2 83* 2.0 1.4 143
OLD BATTLE 10000 2.0 1.0 200* 2.4 1.4 171
SAGE CREEK BASIN 7850 .0 .3 0* 1.4 -M *
SOUTH BRUSH CREEK 8400 .0 .2 0* 1.5 1.0 150
TOWER 10500 1.8 .9 200* 2.6 1.6 162
WEBBER SPRINGS 9200 .0 .4 0* 1.4 1.2 117
WILLOW CREEK PASS 9540 .0 .3 0* .4 .8 50
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Basin wide percent of average 89* 136
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .8 0* 1.4 1.0 140
CASPER MTN. 7900 .0 .5 0* .9 1.0 90
DEADMAN HILL 10220 -M .8 * .4 1.0 40
DEER PARK 9700 .4 .7 57* .6 1.0 60
LAPRELE CREEK 8320 .0 .3 0* .8 .8 100
RENO HILL 8400 .1 .6 17* -M 1.0 *
ROACH 9700 .0 .3 0* .6 .9 67
SAND LAKE 10080 .0 1.2 0* 1.6 1.2 133
SOUTH PASS 9040 .0 .4 0* .6 .9 67
WINDY PEAK 7840 .1 .1 100* .9 .7 129
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Basin wide percent of average 12* 92
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 1.6 .8 200
DIVIDE PEAK 8800 .0 .6 0* 2.0 1.1 182
OLD BATTLE 10000 2.0 1.0 200* 2.4 1.4 171
SANDSTONE RS 8150 .0 .1 0* 1.4 .9 156
WHISKEY PARK 8950 .0 .4 0* 1.7 1.2 142
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Basin wide percent of average 95* 169
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .8 .3 267* .7 .7 100
BLIND BULL SUM 8650 .3 .3 100* .9 .9 100
EAST RIM DIVIDE 7930 .2 .0 * 1.1 .5 220
ELKHART PARK G.S. 9400 .7 .2 350* 1.3 .8 162
GROS VENTRE SUMMIT 8775 .7 .5 140* .9 .7 129
KENDALL R.S. 7740 .2 .0 * .9 .6 150
LOOMIS PARK 8240 .1 .2 50* 1.1 .7 157
NEW FORK LAKE 8340 .2 .0 * .4 .6 67
SNIDER BASIN 8250 .0 .1 0* .8 .7 114
SPRING CREEK DIVIDE 9000 .5 .3 167* 1.0 1.0 100
TRIPLE PEAK 8500 .1 .2 50* 1.1 .9 122
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Basin wide percent of average 152* 126
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 1.0 .6 167
HEWINTA 9500 -M .3 * 1.0 1.0 100
HICKERSON PARK 9150 .0 .0 100* 1.2 .7 171
HOLE-IN-ROCK 9150 .0 .0 100* 1.0 .7 143
INDIAN CREEK 9425 1.3 .3 433* 1.5 1.0 150
KELLEY R.S. 8180 .1 .2 50* .7 .9 78
STEEL CREEK PARK 10100 -M .7 * .5 .9 56
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Basin wide percent of average 280* 119
UPPER BEAR RIVER
BUG LAKE 7950 .0 .5 0* .9 .9 100
HAYDEN FORK 9400 .0 .4 0* 1.4 1.0 140
KELLEY R.S. 8180 .1 .2 50* .7 .9 78
LILY LAKE 9050 .0 .4 0* 1.3 1.0 130
MONTE CRISTO 8960 -M .6 * .8 1.1 73
SALT RIVER SUMMIT 7600 .0 .0 100* .8 .8 100
TRIAL LAKE 9960 .0 .7 0* 1.4 1.1 127
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Basin wide percent of average 5* 107
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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.