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 11 , 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 .7 57
COTTONWOOD CREEK 7600 .1 .1 100* .9 1.0 90
GRANITE CREEK 6770 .2 .1 200* .9 .6 150
GRASSY LAKE 7265 .0 .2 0* 1.5 1.1 136
GROS VENTRE SUMMIT 8775 .6 .4 150* .8 .6 133
LEWIS LAKE DIVIDE 7860 .0 .1 0* 1.1 1.1 100
PHILLIPS BENCH 8200 .0 .1 0* .8 .8 100
SALT RIVER SUMMIT 7600 .1 .0 * .8 .6 133
SNAKE RIVER STATION 6920 -M .0 * .7 .7 100
SPRING CREEK DIVIDE 9000 .5 .2 250* .9 .9 100
THUMB DIVIDE 7980 .0 .1 0* 1.0 .7 143
TOGWOTEE PASS 9580 1.0 .7 143* .8 .9 89
TWO OCEAN PLATEAU 9360 1.2 .9 133* .9 1.0 90
WILLOW CREEK 8450 .1 .3 33* 1.0 1.2 83
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Basin wide percent of average 112* 105
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.3 1.0 130* 1.1 .7 157
BLACK BEAR 8170 1.3 .7 186* 1.5 1.2 125
CANYON 8090 .1 .2 50* .8 .6 133
FISHER CREEK 9100 .7 .8 87* 1.1 1.1 100
MADISON PLATEAU 7750 .0 .3 0* .8 .8 100
NORTHEAST ENTRANCE 7350 .1 .1 100* .5 .5 100
PARKER PEAK 9400 .3 1.0 30* 1.2 .8 150
SYLVAN LAKE 8420 .3 .8 37* 1.3 .9 144
THUMB DIVIDE 7980 .0 .1 0* 1.0 .7 143
TWO OCEAN PLATEAU 9360 1.2 .9 133* .9 1.0 90
WHISKEY CREEK 6800 .1 .1 100* .8 .7 114
WHITE MILL 8700 .9 .6 150* 1.0 .9 111
WOLVERINE 7650 .1 .1 100* .6 .6 100
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Basin wide percent of average 96* 120
WIND RIVER
BURROUGHS CREEK 8750 .7 .3 233* 1.5 .5 300
COLD SPRINGS 9630 .4 .2 200* 1.3 .6 217
DEER PARK 9700 .6 .7 86* .7 .8 87
HOBBS PARK 10100 1.7 .6 283* 1.7 .7 243
LITTLE WARM 9370 .4 .3 133* .7 .6 117
SOUTH PASS 9040 .2 .3 67* .7 .7 100
ST. LAWRENCE ALT 8620 .9 .1 900* 1.5 .6 250
TOGWOTEE PASS 9580 1.0 .7 143* .8 .9 89
TOWNSEND CREEK 8700 .3 .2 150* 1.1 .7 157
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Basin wide percent of average 182* 164
BIGHORN BASIN
BALD MTN. 9380 1.2 1.2 100* 1.2 .8 150
BEAR TRAP MEADOW 8200 .1 .2 50* .7 .6 117
BLACKWATER 9780 1.7 1.2 142* 1.6 .9 178
BONE SPRINGS DIV 9350 1.3 1.1 118* 1.6 .8 200
EVENING STAR 9200 .8 1.0 80* 1.2 .9 133
GRAVE SPRINGS 8550 .1 .2 50* .8 .7 114
KIRWIN 9550 .9 .7 129* 1.2 .6 200
MARQUETTE 8760 .8 .8 100* .8 .8 100
MIDDLE POWDER 7760 .1 .5 20* .6 .9 67
OWL CREEK 8975 1.2 .3 400* 1.0 .4 250
POWDER RIVER PASS 9480 .4 .4 100* .9 .6 150
SHELL CREEK 9580 1.2 1.3 92* 1.0 .7 143
SYLVAN LAKE 8420 .3 .8 37* 1.3 .9 144
SYLVAN ROAD 7120 .1 .1 100* 1.2 .7 171
TIMBER CREEK 7950 .1 .1 100* .8 .5 160
YOUNTS PEAK 8350 .7 .5 140* .9 .6 150
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Basin wide percent of average 106* 147
SHOSHONE RIVER
BLACKWATER 9780 1.7 1.2 142* 1.6 .9 178
EVENING STAR 9200 .8 1.0 80* 1.2 .9 133
KIRWIN 9550 .9 .7 129* 1.2 .6 200
MARQUETTE 8760 .8 .8 100* .8 .8 100
SYLVAN LAKE 8420 .3 .8 37* 1.3 .9 144
SYLVAN ROAD 7120 .1 .1 100* 1.2 .7 171
YOUNTS PEAK 8350 .7 .5 140* .9 .6 150
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Basin wide percent of average 104* 152
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .1 .2 50* .7 .6 117
BIG GOOSE 7990 .2 .2 100* 1.1 .7 157
BONE SPRINGS DIV 9350 1.3 1.1 118* 1.6 .8 200
BURGESS JUNCTION 7880 .4 .5 80* 1.2 .7 171
CLOUD PEAK RESERVOIR 9860 .1 .3 33* .9 .9 100
DOME LAKE 8880 .8 .6 133* 1.0 .8 125
GRAVE SPRINGS 8550 .1 .2 50* .8 .7 114
HANSEN SAWMILL 8360 .3 .2 150* 1.0 .6 167
MIDDLE POWDER 7760 .1 .5 20* .6 .9 67
POWDER RIVER PASS 9480 .4 .4 100* .9 .6 150
SUCKER CREEK 8880 .2 .4 50* 1.1 .8 138
TIE CREEK 6870 .0 .0 100* 1.1 .8 138
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Basin wide percent of average 87* 135
BELLE FOURCHE
BLIND PARK 6890 .2 .0 * .9 .9 100
COLE CANYON 5910 -M -M * .6 -M *
NORTH RAPID CREEK 6130 .2 .1 200* .9 .8 112
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Basin wide percent of average 200* 106
UPPER N. PLATTE RIVER
COLUMBINE 9400 .1 .0 * 1.5 .8 188
DIVIDE PEAK 8800 .2 .5 40* 2.0 .9 222
ELK RIVER 8700 .1 .1 100* 1.2 .7 171
JOE WRIGHT 10120 .7 .6 117* 1.2 1.1 109
NORTH FRENCH CREEK 10100 1.2 1.0 120* 2.1 1.1 191
OLD BATTLE 10000 2.1 .8 262* 2.6 1.2 217
SAGE CREEK BASIN 7850 .0 .2 0* 1.4 -M *
SOUTH BRUSH CREEK 8400 .2 .1 200* 1.9 .9 211
TOWER 10500 2.1 .7 300* 2.9 1.3 223
WEBBER SPRINGS 9200 .1 .4 25* 1.6 1.0 160
WILLOW CREEK PASS 9540 .2 .2 100* .6 .7 86
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Basin wide percent of average 150* 181
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .7 0* 1.8 .8 225
CASPER MTN. 7900 .0 .4 0* 1.1 .8 138
DEADMAN HILL 10220 .3 .7 43* .4 .8 50
DEER PARK 9700 .6 .7 86* .7 .8 87
LAPRELE CREEK 8320 .1 .2 50* 1.0 .6 167
RENO HILL 8400 .4 .5 80* -M .8 *
ROACH 9700 .1 .2 50* .6 .8 75
SAND LAKE 10080 -M 1.0 * 1.4 1.0 140
SOUTH PASS 9040 .2 .3 67* .7 .7 100
WINDY PEAK 7840 .1 .1 100* .9 .6 150
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Basin wide percent of average 47* 125
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .3 .0 * 2.2 .6 367
DIVIDE PEAK 8800 .2 .5 40* 2.0 .9 222
OLD BATTLE 10000 2.1 .8 262* 2.6 1.2 217
SANDSTONE RS 8150 .2 .1 200* 1.5 .8 188
WHISKEY PARK 8950 .1 .4 25* 1.8 1.0 180
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Basin wide percent of average 144* 224
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 .1 .0 * .9 .5 180
ELKHART PARK G.S. 9400 1.0 .1 1000* 1.0 .6 167
GROS VENTRE SUMMIT 8775 .6 .4 150* .8 .6 133
KENDALL R.S. 7740 .2 .0 * .9 .5 180
LOOMIS PARK 8240 .0 .1 0* .9 .6 150
NEW FORK LAKE 8340 .1 .0 * .7 .5 140
SNIDER BASIN 8250 .2 .1 200* .8 .5 160
SPRING CREEK DIVIDE 9000 .5 .2 250* .9 .9 100
TRIPLE PEAK 8500 .0 .1 0* 1.1 .7 157
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Basin wide percent of average 206* 140
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 1.0 .5 200
HEWINTA 9500 .0 .3 0* .7 .8 87
HICKERSON PARK 9150 .2 .0 * 1.1 .6 183
HOLE-IN-ROCK 9150 .0 .0 100* 1.5 .5 300
INDIAN CREEK 9425 1.3 .3 433* 1.5 .9 167
KELLEY R.S. 8180 .2 .1 200* .8 .7 114
STEEL CREEK PARK 10100 .7 .7 100* .6 .8 75
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Basin wide percent of average 157* 150
UPPER BEAR RIVER
BUG LAKE 7950 .0 .4 0* .9 .8 112
HAYDEN FORK 9400 .0 .3 0* 1.6 .8 200
KELLEY R.S. 8180 .2 .1 200* .8 .7 114
LILY LAKE 9050 .1 .3 33* 1.3 .8 162
MONTE CRISTO 8960 -M .6 * .8 .9 89
SALT RIVER SUMMIT 7600 .1 .0 * .8 .6 133
TRIAL LAKE 9960 .0 .7 0* 1.2 .9 133
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Basin wide percent of average 17* 135
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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.