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 20 , 2005
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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 .1 .3 33* 1.3 1.3 100
COTTONWOOD CREEK 7600 .0 .4 0* 1.9 1.9 100
GRANITE CREEK 6770 .0 .2 0* .7 1.1 64
GRASSY LAKE 7265 .1 .7 14* 2.2 2.1 105
GROS VENTRE SUMMIT 8750 .7 .8 87* 1.2 1.2 100
LEWIS LAKE DIVIDE 7850 .0 .5 0* 1.8 2.0 90
PHILLIPS BENCH 8200 .0 .6 0* 1.2 1.5 80
SALT RIVER SUMMIT 7600 .0 .1 0* 1.0 1.2 83
SNAKE RIVER STATION 6920 .1 .2 50* 1.4 1.4 100
SPRING CREEK DIVIDE 9000 .0 .7 0* .6 1.7 35
THUMB DIVIDE 7980 .1 .3 33* 1.5 1.3 115
TOGWOTEE PASS 9580 1.6 1.5 107* 2.0 1.8 111
TWO OCEAN PLATEAU 9240 2.2 1.8 122* 2.2 2.0 110
WILLOW CREEK 8450 .1 .8 12* 2.8 2.3 122
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Basin wide percent of average 56* 96
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.3 1.7 76* 1.2 1.3 92
BLACK BEAR 8170 1.8 1.4 129* 2.6 2.2 118
CANYON 8090 .1 .3 33* 1.6 1.2 133
FISHER CREEK 9100 1.1 1.5 73* 1.6 2.1 76
MADISON PLATEAU 7750 .1 .8 12* 2.0 1.6 125
NORTHEAST ENTRANCE 7350 .1 .2 50* .8 1.0 80
PARKER PEAK 9400 .3 1.6 19* 1.5 1.5 100
SYLVAN LAKE 8420 .1 1.2 8* 2.0 1.7 118
THUMB DIVIDE 7980 .1 .3 33* 1.5 1.3 115
TWO OCEAN PLATEAU 9240 2.2 1.8 122* 2.2 2.0 110
WHISKEY CREEK 6800 .1 .3 33* 1.4 1.4 100
WHITE MILL 8700 .3 1.1 27* 1.3 1.7 76
WOLVERINE 7650 .1 .2 50* 1.0 1.2 83
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Basin wide percent of average 62* 102
WIND RIVER
BURROUGHS CREEK 8750 .0 .5 0* 1.9 1.0 190
COLD SPRINGS 9630 .1 .5 20* 2.1 1.2 175
DEER PARK 9700 .1 1.4 7* 1.4 1.6 87
HOBBS PARK 10100 .8 1.2 67* 2.1 1.3 162
LITTLE WARM 9370 1.0 .6 167* 1.9 1.1 173
SOUTH PASS 9040 .1 .8 12* 1.6 1.3 123
ST. LAWRENCE ALT 8620 .1 .3 33* 1.8 1.1 164
TOGWOTEE PASS 9580 1.6 1.5 107* 2.0 1.8 111
TOWNSEND CREEK 8700 .2 .5 40* 2.0 1.3 154
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Basin wide percent of average 55* 144
BIGHORN BASIN
BALD MTN. 9380 2.0 1.9 105* 2.1 1.5 140
BEAR TRAP MEADOW 8200 .2 .3 67* 1.9 1.1 173
BLACKWATER 9780 1.1 2.0 55* 1.5 1.7 88
BONE SPRINGS DIV 9350 2.0 1.7 118* 2.3 1.6 144
EVENING STAR 9200 .4 1.7 24* 1.9 1.8 106
GRAVE SPRINGS 8550 .0 .5 0* 2.3 1.3 177
KIRWIN 9550 1.3 1.1 118* 1.5 1.2 125
MARQUETTE 8760 .2 1.2 17 2.1 1.5 140
MIDDLE POWDER 7760 .3 .8 37* 2.5 1.7 147
OWL CREEK 8975 1.0 .5 200* 1.9 .7 271
POWDER RIVER PASS 9480 .4 .7 57* 1.8 1.2 150
SHELL CREEK 9580 1.9 1.9 100 2.0 1.3 154
SYLVAN LAKE 8420 .1 1.2 8* 2.0 1.7 118
SYLVAN ROAD 7120 .2 .2 100* 1.3 1.3 100
TIMBER CREEK 7950 .0 .4 0* 1.7 1.0 170
YOUNTS PEAK 8350 .5 .8 62* 2.3 1.2 192
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Basin wide percent of average 69* 143
SHOSHONE RIVER
BLACKWATER 9780 1.1 2.0 55* 1.5 1.7 88
EVENING STAR 9200 .4 1.7 24* 1.9 1.8 106
KIRWIN 9550 1.3 1.1 118* 1.5 1.2 125
MARQUETTE 8760 .2 1.2 17 2.1 1.5 140
SYLVAN LAKE 8420 .1 1.2 8* 2.0 1.7 118
SYLVAN ROAD 7120 .2 .2 100* 1.3 1.3 100
YOUNTS PEAK 8350 .5 .8 62* 2.3 1.2 192
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Basin wide percent of average 46* 121
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .2 .3 67* 1.9 1.1 173
BIG GOOSE 7990 .0 .5 0* 2.3 1.3 177
BONE SPRINGS DIV 9350 2.0 1.7 118* 2.3 1.6 144
BURGESS JUNCTION 7880 .2 .9 22* 2.3 1.4 164
CLOUD PEAK RESERVOIR 9860 .2 .8 25* 2.3 1.7 135
DOME LAKE 8880 1.0 1.1 91* 2.4 1.6 150
GRAVE SPRINGS 8550 .0 .5 0* 2.3 1.3 177
HANSEN SAWMILL 8360 .3 .4 75* 2.1 1.2 175
MIDDLE POWDER 7760 .3 .8 37* 2.5 1.7 147
POWDER RIVER PASS 9480 .4 .7 57* 1.8 1.2 150
SUCKER CREEK 8880 .8 .8 100* 2.3 1.5 153
TIE CREEK 6870 .1 .3 33* 2.6 1.6 162
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Basin wide percent of average 62* 158
BELLE FOURCHE
BLIND PARK 6890 .0 .2 0* 1.1 1.7 65
COLE CANYON 5910 .0 .3 0* 1.8 -M *
NORTH RAPID CREEK 6130 .0 .2 0* 1.2 1.6 75
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Basin wide percent of average 0* 70
UPPER N. PLATTE RIVER
COLUMBINE 9160 .1 .3 33* 2.9 1.5 193
DIVIDE PEAK 8860 .0 1.0 0* 3.3 1.7 194
ELK RIVER 8700 .1 .3 33* 2.5 1.4 179
JOE WRIGHT 10120 .2 1.4 14* 2.4 2.1 114
NORTH FRENCH CREEK 10130 .2 2.0 10* 2.1 2.1 100
OLD BATTLE 9920 1.9 1.7 112* 3.9 2.3 170
SAGE CREEK BASIN 7850 .2 .5 40* 1.9 1.0 190
SOUTH BRUSH CREEK 8440 .0 .4 0* 2.0 1.7 118
TOWER 10500 .4 1.8 22* 4.0 2.5 160
WEBBER SPRINGS 9250 .2 .9 22* 4.0 2.0 200
WILLOW CREEK PASS 9540 1.1 .6 183* 1.9 1.3 146
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Basin wide percent of average 40* 158
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 .4 1.3 31* 1.0 1.6 62
CASPER MTN. 7850 .0 1.0 0* 2.3 1.6 144
DEADMAN HILL 10220 1.1 1.3 85* 2.2 1.6 138
DEER PARK 9700 .1 1.4 7* 1.4 1.6 87
LAPRELE CREEK 8375 .0 .5 0* .8 1.2 67
RENO HILL 8500 .1 1.0 10* 2.1 1.6 131
ROACH 9700 -M .6 * -M 1.5 *
SAND LAKE 10050 1.8 1.9 95* 2.7 2.0 135
SOUTH PASS 9040 .1 .8 12* 1.6 1.3 123
WINDY PEAK 7900 .0 .2 0* 1.4 1.1 127
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Basin wide percent of average 38* 114
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .2 .2 100* 1.9 1.2 158
DIVIDE PEAK 8860 .0 1.0 0* 3.3 1.7 194
OLD BATTLE 9920 1.9 1.7 112* 3.9 2.3 170
SANDSTONE RS 8150 .0 .2 0* 2.3 1.5 153
WHISKEY PARK 8950 .4 .9 44* 2.6 1.8 144
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Basin wide percent of average 62* 165
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .3 .7 43* 1.3 1.2 108
BLIND BULL SUM 8900 .2 .8 25* .8 1.4 57
EAST RIM DIVIDE 7930 .2 .2 100* .5 .9 56
ELKHART PARK G.S. 9400 .1 .4 25* 1.0 1.2 83
GROS VENTRE SUMMIT 8750 .7 .8 87* 1.2 1.2 100
KENDALL R.S. 7740 .1 .2 50* .8 1.0 80
LOOMIS PARK 8240 .1 .4 25* .4 1.2 33
NEW FORK LAKE 8340 .0 .2 0* .8 1.0 80
SNIDER BASIN 8060 .1 .3 33* .5 1.0 50
SPRING CREEK DIVIDE 9000 .0 .7 0* .6 1.7 35
TRIPLE PEAK 8500 .1 .5 20* .9 1.4 64
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Basin wide percent of average 37* 67
LOWER GREEN RIVER
HAMS FORK 7840 .1 .1 100* .7 .9 78
HEWINTA 9500 .0 .5 0* .8 1.5 53
HICKERSON PARK 9100 .0 .1 0* .7 1.1 64
HOLE-IN-ROCK 9150 .0 .1 0* .8 1.0 80
INDIAN CREEK 9425 .1 .8 12* 1.0 1.7 59
KELLEY R.S. 8180 .2 .4 50* .9 1.3 69
STEEL CREEK PARK 10100 .0 1.1 0* 1.0 1.5 67
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Basin wide percent of average 13* 66
UPPER BEAR RIVER
BUG LAKE 7950 .0 .7 0* .7 1.5 47
HAYDEN FORK 9100 .0 .5 0* .6 1.5 40
KELLEY R.S. 8180 .2 .4 50* .9 1.3 69
LILY LAKE 9050 .0 .6 0* .6 1.5 40
MONTE CRISTO 8960 .0 1.0 0* .9 1.8 50
SALT RIVER SUMMIT 7600 .0 .1 0* 1.0 1.2 83
TRIAL LAKE 9960 .0 1.2 0* .5 1.8 28
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Basin wide percent of average 4* 49
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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.