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 TUESDAY: OCTOBER 15 , 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 .9 56
COTTONWOOD CREEK 7600 .2 .1 200* 1.0 1.4 71
GRANITE CREEK 6770 .1 .1 100* 1.0 .8 125
GRASSY LAKE 7265 .1 .3 33* 1.2 1.6 75
GROS VENTRE SUMMIT 8775 .8 .6 133* 1.0 .9 111
LEWIS LAKE DIVIDE 7860 .0 .1 0* 1.2 1.5 80
PHILLIPS BENCH 8200 .1 .2 50* .8 1.1 73
SALT RIVER SUMMIT 7600 .1 .0 * .8 .9 89
SNAKE RIVER STATION 6920 -M .0 * .8 1.0 80
SPRING CREEK DIVIDE 9000 .5 .3 167* 1.0 1.2 83
THUMB DIVIDE 7980 .0 .1 0* 1.3 .9 144
TOGWOTEE PASS 9580 .8 1.0 80* .8 1.3 62
TWO OCEAN PLATEAU 9360 2.2 1.2 183* 1.4 1.4 100
WILLOW CREEK 8450 .0 .4 0* 1.0 1.7 59
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Basin wide percent of average 107* 83
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.8 1.3 138* 1.7 1.0 170
BLACK BEAR 8170 1.5 .8 188* 1.9 1.6 119
CANYON 8090 .6 .2 300* 1.2 .9 133
FISHER CREEK 9100 1.5 1.0 150* 1.7 1.5 113
MADISON PLATEAU 7750 .4 .4 100* 1.1 1.2 92
NORTHEAST ENTRANCE 7350 .0 .1 0* .9 .7 129
PARKER PEAK 9400 1.4 1.2 117* 2.3 1.1 209
SYLVAN LAKE 8420 .5 .9 56* 1.8 1.2 150
THUMB DIVIDE 7980 .0 .1 0* 1.3 .9 144
TWO OCEAN PLATEAU 9360 2.2 1.2 183* 1.4 1.4 100
WHISKEY CREEK 6800 .3 .1 300* .8 1.0 80
WHITE MILL 8700 1.5 .7 214* 1.4 1.3 108
WOLVERINE 7650 .1 .1 100* 1.7 .9 189
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Basin wide percent of average 146* 131
WIND RIVER
BURROUGHS CREEK 8750 .6 .3 200* .8 .8 100
COLD SPRINGS 9630 .2 .2 100* 1.3 .9 144
DEER PARK 9700 .4 .8 50* .7 1.2 58
HOBBS PARK 10100 1.8 .7 257* 1.6 1.0 160
LITTLE WARM 9370 .4 .4 100* .7 .8 87
SOUTH PASS 9040 .1 .4 25* .6 1.0 60
ST. LAWRENCE ALT 8620 .2 .1 200* 1.5 .8 188
TOGWOTEE PASS 9580 .8 1.0 80* .8 1.3 62
TOWNSEND CREEK 8700 .0 .3 0* 1.3 1.0 130
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Basin wide percent of average 107* 106
BIGHORN BASIN
BALD MTN. 9380 1.7 1.5 113* 1.5 1.1 136
BEAR TRAP MEADOW 8200 .3 .2 150* 1.0 .8 125
BLACKWATER 9780 2.3 1.5 153* 2.3 1.3 177
BONE SPRINGS DIV 9350 1.8 1.3 138* 1.8 1.2 150
EVENING STAR 9200 1.1 1.2 92* 1.6 1.3 123
GRAVE SPRINGS 8550 .1 .2 50* .9 1.0 90
KIRWIN 9550 .8 .8 100* 1.1 .9 122
MARQUETTE 8760 1.1 .9 122* 1.0 1.1 91
MIDDLE POWDER 7760 .4 .6 67* .9 1.2 75
OWL CREEK 8975 1.0 .3 333* 1.0 .5 200
POWDER RIVER PASS 9480 .8 .5 160* 1.3 .9 144
SHELL CREEK 9580 1.5 1.6 94* 1.5 .9 167
SYLVAN LAKE 8420 .5 .9 56* 1.8 1.2 150
SYLVAN ROAD 7120 .2 .1 200* 1.6 1.0 160
TIMBER CREEK 7950 .2 .1 200* 1.1 .8 138
YOUNTS PEAK 8350 1.1 .6 183* .9 .9 100
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Basin wide percent of average 121* 132
SHOSHONE RIVER
BLACKWATER 9780 2.3 1.5 153* 2.3 1.3 177
EVENING STAR 9200 1.1 1.2 92* 1.6 1.3 123
KIRWIN 9550 .8 .8 100* 1.1 .9 122
MARQUETTE 8760 1.1 .9 122* 1.0 1.1 91
SYLVAN LAKE 8420 .5 .9 56* 1.8 1.2 150
SYLVAN ROAD 7120 .2 .1 200* 1.6 1.0 160
YOUNTS PEAK 8350 1.1 .6 183* .9 .9 100
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Basin wide percent of average 118* 134
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .3 .2 150* 1.0 .8 125
BIG GOOSE 7990 .4 .3 133* 1.2 1.0 120
BONE SPRINGS DIV 9350 1.8 1.3 138* 1.8 1.2 150
BURGESS JUNCTION 7880 .7 .6 117* 1.4 1.0 140
CLOUD PEAK RESERVOIR 9860 .8 .4 200* 1.3 1.2 108
DOME LAKE 8880 1.1 .7 157* 1.5 1.2 125
GRAVE SPRINGS 8550 .1 .2 50* .9 1.0 90
HANSEN SAWMILL 8360 .4 .2 200* 1.2 .9 133
MIDDLE POWDER 7760 .4 .6 67* .9 1.2 75
POWDER RIVER PASS 9480 .8 .5 160* 1.3 .9 144
SUCKER CREEK 8880 .7 .5 140* 1.6 1.1 145
TIE CREEK 6870 .0 .0 100* 1.3 1.2 108
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Basin wide percent of average 136* 121
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* 1.0 1.2 83
COLE CANYON 5910 .0 -M * .2 -M *
NORTH RAPID CREEK 6130 .0 .1 0* .8 1.2 67
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Basin wide percent of average 0* 75
UPPER N. PLATTE RIVER
COLUMBINE 9400 .1 .0 * 1.4 1.1 127
DIVIDE PEAK 8800 .1 .7 14* 2.0 1.3 154
ELK RIVER 8700 .0 .1 0* 1.3 1.0 130
JOE WRIGHT 10120 .5 .8 62* 1.1 1.6 69
NORTH FRENCH CREEK 10100 1.1 1.4 79* 2.0 1.6 125
OLD BATTLE 10000 2.0 1.1 182* 2.5 1.7 147
SAGE CREEK BASIN 7850 .0 .3 0* 1.4 -M *
SOUTH BRUSH CREEK 8400 .0 .2 0* 1.8 1.2 150
TOWER 10500 1.8 1.0 180* 2.7 1.9 142
WEBBER SPRINGS 9200 .0 .5 0* 1.4 1.4 100
WILLOW CREEK PASS 9540 .1 .3 33* .6 .9 67
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Basin wide percent of average 88* 123
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .9 0* 1.4 1.2 117
CASPER MTN. 7900 .1 .6 17* 1.0 1.2 83
DEADMAN HILL 10220 .4 .9 44* .4 1.2 33
DEER PARK 9700 .4 .8 50* .7 1.2 58
LAPRELE CREEK 8320 .0 .3 0* .8 .9 89
RENO HILL 8400 .1 .7 14* -M 1.2 *
ROACH 9700 .0 .3 0* .6 1.1 55
SAND LAKE 10080 .0 1.3 0* 1.6 1.4 114
SOUTH PASS 9040 .1 .4 25* .6 1.0 60
WINDY PEAK 7840 .1 .1 100* .9 .8 112
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Basin wide percent of average 19* 80
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 1.7 .9 189
DIVIDE PEAK 8800 .1 .7 14* 2.0 1.3 154
OLD BATTLE 10000 2.0 1.1 182* 2.5 1.7 147
SANDSTONE RS 8150 .0 .1 0* 1.4 1.1 127
WHISKEY PARK 8950 .0 .5 0* 1.7 1.4 121
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Basin wide percent of average 87* 145
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .9 .4 225* .7 .9 78
BLIND BULL SUM 8650 .4 .4 100* .9 1.0 90
EAST RIM DIVIDE 7930 .2 .0 * 1.1 .6 183
ELKHART PARK G.S. 9400 .9 .2 450* 1.1 .9 122
GROS VENTRE SUMMIT 8775 .8 .6 133* 1.0 .9 111
KENDALL R.S. 7740 .2 .0 * 1.0 .7 143
LOOMIS PARK 8240 .1 .2 50* 1.1 .9 122
NEW FORK LAKE 8340 .3 .0 * .4 .7 57
SNIDER BASIN 8250 .1 .1 100* .9 .8 112
SPRING CREEK DIVIDE 9000 .5 .3 167* 1.0 1.2 83
TRIPLE PEAK 8500 .1 .2 50* 1.2 1.0 120
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Basin wide percent of average 158* 108
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 1.0 .7 143
HEWINTA 9500 .0 .4 0* 1.0 1.1 91
HICKERSON PARK 9150 .2 .0 * 1.1 .8 138
HOLE-IN-ROCK 9150 .0 .0 100* 1.3 .8 162
INDIAN CREEK 9425 1.2 .4 300* 1.6 1.2 133
KELLEY R.S. 8180 .2 .2 100* .7 1.0 70
STEEL CREEK PARK 10100 -M .8 * .4 1.1 36
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Basin wide percent of average 140* 106
UPPER BEAR RIVER
BUG LAKE 7950 .0 .5 0* .9 1.1 82
HAYDEN FORK 9400 .0 .4 0* 1.4 1.1 127
KELLEY R.S. 8180 .2 .2 100* .7 1.0 70
LILY LAKE 9050 .0 .4 0* 1.3 1.1 118
MONTE CRISTO 8960 -M .7 * .8 1.3 62
SALT RIVER SUMMIT 7600 .1 .0 * .8 .9 89
TRIAL LAKE 9960 .0 .8 0* 1.3 1.3 100
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Basin wide percent of average 9* 92
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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.