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 24 , 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 .2 .4 50* .6 1.6 37
COTTONWOOD CREEK 7600 .9 .6 150* 2.0 2.3 87
GRANITE CREEK 6770 .4 .4 100* 1.4 1.3 108
GRASSY LAKE 7265 .7 .9 78* 1.8 2.6 69
GROS VENTRE SUMMIT 8775 1.0 1.0 100* 1.3 1.4 93
LEWIS LAKE DIVIDE 7860 .4 .7 57* 1.8 2.4 75
PHILLIPS BENCH 8200 -M .9 * -M 1.9 *
SALT RIVER SUMMIT 7600 .2 .2 100* 1.2 1.5 80
SNAKE RIVER STATION 6920 -M .3 * -M 1.7 *
SPRING CREEK DIVIDE 9000 .8 1.0 80* 1.4 2.0 70
THUMB DIVIDE 7980 .5 .5 100* 1.8 1.6 112
TOGWOTEE PASS 9580 1.1 1.9 58* 1.1 2.2 50
TWO OCEAN PLATEAU 9360 3.4 2.3 148* 1.9 2.4 79
WILLOW CREEK 8450 .5 1.2 42* 1.9 2.8 68
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Basin wide percent of average 91* 76
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 2.8 2.0 140* 2.4 1.6 150
BLACK BEAR 8170 1.9 1.9 100* 2.1 2.7 78
CANYON 8090 .8 .5 160* 1.5 1.4 107
FISHER CREEK 9100 2.0 2.0 100* 2.2 2.5 88
MADISON PLATEAU 7750 .3 1.1 27* 1.2 1.9 63
NORTHEAST ENTRANCE 7350 .2 .2 100* 1.2 1.2 100
PARKER PEAK 9400 2.3 1.9 121* 2.6 1.8 144
SYLVAN LAKE 8420 .7 1.5 47* 2.2 2.0 110
THUMB DIVIDE 7980 .5 .5 100* 1.8 1.6 112
TWO OCEAN PLATEAU 9360 3.4 2.3 148* 1.9 2.4 79
WHISKEY CREEK 6800 .3 .5 60* 1.0 1.7 59
WHITE MILL 8700 2.0 1.4 143* 2.0 2.1 95
WOLVERINE 7650 .4 .3 133* 2.1 1.4 150
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Basin wide percent of average 109* 100
WIND RIVER
BURROUGHS CREEK 8750 1.2 .7 171* 1.7 1.3 131
COLD SPRINGS 9630 .4 .7 57* 1.5 1.5 100
DEER PARK 9700 .5 1.8 28* .9 1.9 47
HOBBS PARK 10100 2.2 1.5 147* 2.0 1.6 125
LITTLE WARM 9370 .5 .8 62* .8 1.3 62
SOUTH PASS 9040 .2 1.0 20* .7 1.6 44
ST. LAWRENCE ALT 8620 .4 .5 80* 1.9 1.3 146
TOGWOTEE PASS 9580 1.1 1.9 58* 1.1 2.2 50
TOWNSEND CREEK 8700 .1 .7 14* 1.8 1.6 112
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Basin wide percent of average 69* 87
BIGHORN BASIN
BALD MTN. 9380 2.5 2.2 114* 2.3 1.9 121
BEAR TRAP MEADOW 8200 .4 .4 100* 1.2 1.3 92
BLACKWATER 9780 2.7 2.4 113* 2.6 2.1 124
BONE SPRINGS DIV 9350 2.5 2.0 125 2.3 1.9 121
EVENING STAR 9200 1.6 2.0 80* 2.1 2.2 95
GRAVE SPRINGS 8550 .0 .7 0* 1.0 1.6 62
KIRWIN 9550 1.2 1.4 86 1.4 1.4 100
MARQUETTE 8760 1.2 1.5 80 1.1 1.8 61
MIDDLE POWDER 7760 .5 1.0 50* 1.1 2.0 55
OWL CREEK 8975 1.2 .6 200 1.2 .9 133
POWDER RIVER PASS 9480 1.1 .9 122* 1.8 1.5 120
SHELL CREEK 9580 2.4 2.2 109 2.4 1.6 150
SYLVAN LAKE 8420 .7 1.5 47* 2.2 2.0 110
SYLVAN ROAD 7120 .5 .3 167* 1.8 1.6 112
TIMBER CREEK 7950 .0 .6 0 1.3 1.3 100
YOUNTS PEAK 8350 1.3 1.0 130* 1.2 1.4 86
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Basin wide percent of average 96* 102
SHOSHONE RIVER
BLACKWATER 9780 2.7 2.4 113* 2.6 2.1 124
EVENING STAR 9200 1.6 2.0 80* 2.1 2.2 95
KIRWIN 9550 1.2 1.4 86 1.4 1.4 100
MARQUETTE 8760 1.2 1.5 80 1.1 1.8 61
SYLVAN LAKE 8420 .7 1.5 47* 2.2 2.0 110
SYLVAN ROAD 7120 .5 .3 167* 1.8 1.6 112
YOUNTS PEAK 8350 1.3 1.0 130* 1.2 1.4 86
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Basin wide percent of average 91* 99
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .4 .4 100* 1.2 1.3 92
BIG GOOSE 7990 1.0 .6 167* 1.9 1.6 119
BONE SPRINGS DIV 9350 2.5 2.0 125 2.3 1.9 121
BURGESS JUNCTION 7880 .8 1.1 73* 1.9 1.7 112
CLOUD PEAK RESERVOIR 9860 1.1 1.0 110* 1.8 2.0 90
DOME LAKE 8880 1.9 1.3 146* 2.4 1.9 126
GRAVE SPRINGS 8550 .0 .7 0* 1.0 1.6 62
HANSEN SAWMILL 8360 .8 .6 133* 1.7 1.4 121
MIDDLE POWDER 7760 .5 1.0 50* 1.1 2.0 55
POWDER RIVER PASS 9480 1.1 .9 122* 1.8 1.5 120
SUCKER CREEK 8880 1.4 1.0 140* 2.1 1.9 111
TIE CREEK 6870 .2 .5 40* 1.7 1.9 89
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Basin wide percent of average 105* 101
BELLE FOURCHE
BLIND PARK 6890 .4 .3 133* 1.5 2.0 75
COLE CANYON 5910 .1 -M * .9 -M *
NORTH RAPID CREEK 6130 .3 .3 100* 1.1 1.9 58
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Basin wide percent of average 117* 67
UPPER N. PLATTE RIVER
COLUMBINE 9400 .2 .5 40* 1.9 1.9 100
DIVIDE PEAK 8800 .4 1.3 31* 2.4 2.1 114
ELK RIVER 8700 .2 .4 50* 1.7 1.7 100
JOE WRIGHT 10120 .5 1.8 28* 1.7 2.6 65
NORTH FRENCH CREEK 10100 .6 2.4 25* 2.6 2.6 100
OLD BATTLE 10000 .8 2.2 36* 3.3 2.7 122
SAGE CREEK BASIN 7850 .4 .7 57* 1.9 -M *
SOUTH BRUSH CREEK 8400 .4 .5 80* 2.2 2.0 110
TOWER 10500 2.4 2.4 100* 3.4 3.0 113
WEBBER SPRINGS 9200 .6 1.3 46* 2.0 2.4 83
WILLOW CREEK PASS 9540 .5 .8 62* 1.4 1.6 87
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Basin wide percent of average 49* 100
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .2 1.6 12* 2.0 1.9 105
CASPER MTN. 7900 .2 1.2 17* 1.0 1.9 53
DEADMAN HILL 10220 .0 1.6 0* .9 1.9 47
DEER PARK 9700 .5 1.8 28* .9 1.9 47
LAPRELE CREEK 8320 .2 .7 29* 1.0 1.5 67
RENO HILL 8400 .1 1.3 8* -M 1.9 *
ROACH 9700 .5 .8 62* 1.0 1.8 56
SAND LAKE 10080 .7 2.4 29* 2.2 2.4 92
SOUTH PASS 9040 .2 1.0 20* .7 1.6 44
WINDY PEAK 7840 .3 .4 75* 1.2 1.3 92
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Basin wide percent of average 23* 67
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .2 .3 67* 2.5 1.5 167
DIVIDE PEAK 8800 .4 1.3 31* 2.4 2.1 114
OLD BATTLE 10000 .8 2.2 36* 3.3 2.7 122
SANDSTONE RS 8150 .4 .4 100* 2.3 1.8 128
WHISKEY PARK 8950 .6 1.2 50* 2.4 2.2 109
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Basin wide percent of average 44* 125
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .9 .9 100* 1.0 1.4 71
BLIND BULL SUM 8650 .4 1.1 36* 1.2 1.7 71
EAST RIM DIVIDE 7930 .2 .4 50* 1.4 1.0 140
ELKHART PARK G.S. 9400 1.3 .6 217* 1.5 1.5 100
GROS VENTRE SUMMIT 8775 1.0 1.0 100* 1.3 1.4 93
KENDALL R.S. 7740 .4 .4 100* 1.3 1.2 108
LOOMIS PARK 8240 .5 .6 83* 1.5 1.4 107
NEW FORK LAKE 8340 .5 .3 167* .6 1.2 50
SNIDER BASIN 8250 .5 .5 100* 1.2 1.3 92
SPRING CREEK DIVIDE 9000 .8 1.0 80* 1.4 2.0 70
TRIPLE PEAK 8500 .6 .8 75* 1.9 1.7 112
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Basin wide percent of average 93* 91
LOWER GREEN RIVER
HAMS FORK 7840 .5 .3 167* 1.6 1.1 145
HEWINTA 9500 .2 .7 29* 1.7 1.9 89
HICKERSON PARK 9150 .6 .3 200* 1.6 1.3 123
HOLE-IN-ROCK 9150 .3 .3 100* 2.0 1.3 154
INDIAN CREEK 9425 1.8 1.0 180* 2.1 2.0 105
KELLEY R.S. 8180 .7 .6 117* 1.4 1.6 87
STEEL CREEK PARK 10100 .0 1.3 0* 1.2 1.8 67
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Basin wide percent of average 91* 105
UPPER BEAR RIVER
BUG LAKE 7950 .3 .9 33* 1.3 1.8 72
HAYDEN FORK 9400 .9 .7 129* 2.4 1.9 126
KELLEY R.S. 8180 .7 .6 117* 1.4 1.6 87
LILY LAKE 9050 .8 .7 114* 2.2 1.9 116
MONTE CRISTO 8960 .6 1.2 50* 1.5 2.2 68
SALT RIVER SUMMIT 7600 .2 .2 100* 1.2 1.5 80
TRIAL LAKE 9960 .7 1.4 50* 2.4 2.2 109
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Basin wide percent of average 74* 95
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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.