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 25 , 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 .3 .5 60* .8 1.6 50
COTTONWOOD CREEK 7600 1.1 .6 183* 2.2 2.4 92
GRANITE CREEK 6770 .6 .4 150* 1.6 1.4 114
GRASSY LAKE 7265 1.0 1.0 100* 2.1 2.7 78
GROS VENTRE SUMMIT 8775 1.1 1.1 100* 1.3 1.5 87
LEWIS LAKE DIVIDE 7860 .5 .8 62* 2.0 2.6 77
PHILLIPS BENCH 8200 .9 1.0 90* 1.7 1.9 89
SALT RIVER SUMMIT 7600 .3 .2 150* 1.3 1.5 87
SNAKE RIVER STATION 6920 -M .4 * -M 1.8 *
SPRING CREEK DIVIDE 9000 1.0 1.1 91* 1.6 2.1 76
THUMB DIVIDE 7980 .6 .6 100* 2.0 1.6 125
TOGWOTEE PASS 9580 1.3 2.0 65* 1.3 2.2 59
TWO OCEAN PLATEAU 9360 3.7 2.4 154* 2.2 2.5 88
WILLOW CREEK 8450 .5 1.3 38* 2.0 2.9 69
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Basin wide percent of average 99* 82
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 2.7 2.1 129* 2.3 1.7 135
BLACK BEAR 8170 2.1 2.0 105* 2.3 2.8 82
CANYON 8090 .9 .5 180* 1.6 1.5 107
FISHER CREEK 9100 2.1 2.1 100* 2.3 2.6 88
MADISON PLATEAU 7750 .8 1.2 67* 1.7 2.0 85
NORTHEAST ENTRANCE 7350 .3 .2 150* 1.3 1.2 108
PARKER PEAK 9400 2.4 2.0 120* 2.7 1.9 142
SYLVAN LAKE 8420 1.0 1.5 67* 2.6 2.1 124
THUMB DIVIDE 7980 .6 .6 100* 2.0 1.6 125
TWO OCEAN PLATEAU 9360 3.7 2.4 154* 2.2 2.5 88
WHISKEY CREEK 6800 .5 .5 100* 1.1 1.8 61
WHITE MILL 8700 2.2 1.5 147* 2.1 2.2 95
WOLVERINE 7650 .3 .3 100* 2.1 1.5 140
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Basin wide percent of average 116* 104
WIND RIVER
BURROUGHS CREEK 8750 1.3 .7 186* 1.7 1.3 131
COLD SPRINGS 9630 .4 .7 57* 1.5 1.5 100
DEER PARK 9700 .4 1.9 21 .8 2.0 40
HOBBS PARK 10100 2.2 1.6 138* 1.9 1.7 112
LITTLE WARM 9370 .6 .8 75* .9 1.4 64
SOUTH PASS 9040 .1 1.1 9* .7 1.7 41
ST. LAWRENCE ALT 8620 .4 .6 67* 1.9 1.4 136
TOGWOTEE PASS 9580 1.3 2.0 65* 1.3 2.2 59
TOWNSEND CREEK 8700 .1 .8 12* 1.8 1.7 106
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Basin wide percent of average 67* 84
BIGHORN BASIN
BALD MTN. 9380 2.5 2.3 109* 2.3 1.9 121
BEAR TRAP MEADOW 8200 .4 .4 100* 1.2 1.4 86
BLACKWATER 9780 2.7 2.5 108* 2.5 2.2 114
BONE SPRINGS DIV 9350 2.5 2.1 119 2.3 2.0 115
EVENING STAR 9200 1.6 2.1 76* 2.1 2.2 95
GRAVE SPRINGS 8550 .0 .8 0* .8 1.7 47
KIRWIN 9550 1.2 1.4 86 1.3 1.5 87
MARQUETTE 8760 1.2 1.5 80 1.0 1.9 53
MIDDLE POWDER 7760 .6 1.0 60* 1.1 2.1 52
OWL CREEK 8975 1.3 .7 186 1.2 .9 133
POWDER RIVER PASS 9480 1.1 1.0 110* 1.8 1.5 120
SHELL CREEK 9580 2.5 2.2 114 2.4 1.6 150
SYLVAN LAKE 8420 1.0 1.5 67* 2.6 2.1 124
SYLVAN ROAD 7120 .6 .3 200* 1.9 1.7 112
TIMBER CREEK 7950 .2 .7 29 1.3 1.3 100
YOUNTS PEAK 8350 1.4 1.1 127* 1.3 1.5 87
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Basin wide percent of average 96* 99
SHOSHONE RIVER
BLACKWATER 9780 2.7 2.5 108* 2.5 2.2 114
EVENING STAR 9200 1.6 2.1 76* 2.1 2.2 95
KIRWIN 9550 1.2 1.4 86 1.3 1.5 87
MARQUETTE 8760 1.2 1.5 80 1.0 1.9 53
SYLVAN LAKE 8420 1.0 1.5 67* 2.6 2.1 124
SYLVAN ROAD 7120 .6 .3 200* 1.9 1.7 112
YOUNTS PEAK 8350 1.4 1.1 127* 1.3 1.5 87
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Basin wide percent of average 93* 97
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .4 .4 100* 1.2 1.4 86
BIG GOOSE 7990 1.0 .7 143* 1.9 1.7 112
BONE SPRINGS DIV 9350 2.5 2.1 119 2.3 2.0 115
BURGESS JUNCTION 7880 .8 1.2 67* 1.9 1.8 106
CLOUD PEAK RESERVOIR 9860 1.2 1.1 109* 1.9 2.1 90
DOME LAKE 8880 1.9 1.4 136 2.3 2.0 115
GRAVE SPRINGS 8550 .0 .8 0* .8 1.7 47
HANSEN SAWMILL 8360 .9 .6 150* 1.8 1.5 120
MIDDLE POWDER 7760 .6 1.0 60* 1.1 2.1 52
POWDER RIVER PASS 9480 1.1 1.0 110* 1.8 1.5 120
SUCKER CREEK 8880 1.4 1.0 140* 2.1 1.9 111
TIE CREEK 6870 .3 .5 60* 1.9 2.0 95
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Basin wide percent of average 103* 97
BELLE FOURCHE
BLIND PARK 6890 .4 .4 100* 1.5 2.1 71
COLE CANYON 5910 .2 -M * .9 -M *
NORTH RAPID CREEK 6130 .4 .3 133* 1.3 2.0 65
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Basin wide percent of average 114* 68
UPPER N. PLATTE RIVER
COLUMBINE 9400 .3 .5 60* 2.0 1.9 105
DIVIDE PEAK 8800 .6 1.3 46* 2.6 2.2 118
ELK RIVER 8700 .2 .5 40* 2.0 1.8 111
JOE WRIGHT 10120 .7 1.9 37* 2.0 2.7 74
NORTH FRENCH CREEK 10100 .8 2.5 32* 2.8 2.7 104
OLD BATTLE 10000 1.2 2.3 52* 3.6 2.9 124
SAGE CREEK BASIN 7850 .4 .7 57* 2.0 -M *
SOUTH BRUSH CREEK 8400 .6 .6 100* 2.4 2.1 114
TOWER 10500 2.7 2.6 104* 3.7 3.2 116
WEBBER SPRINGS 9200 .8 1.4 57* 2.2 2.5 88
WILLOW CREEK PASS 9540 .7 .8 87* 1.4 1.6 87
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Basin wide percent of average 60* 105
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .2 1.7 12* 2.2 2.0 110
CASPER MTN. 7900 .0 1.3 0* 1.0 2.0 50
DEADMAN HILL 10220 .1 1.7 6* 1.1 2.0 55
DEER PARK 9700 .4 1.9 21 .8 2.0 40
LAPRELE CREEK 8320 .2 .8 25* 1.0 1.5 67
RENO HILL 8400 .2 1.3 15* -M 2.0 *
ROACH 9700 .5 .9 56* 1.1 1.9 58
SAND LAKE 10080 .8 2.5 32* 2.4 2.5 96
SOUTH PASS 9040 .1 1.1 9* .7 1.7 41
WINDY PEAK 7840 .3 .4 75* 1.2 1.4 86
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Basin wide percent of average 21* 68
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .4 0* 2.5 1.5 167
DIVIDE PEAK 8800 .6 1.3 46* 2.6 2.2 118
OLD BATTLE 10000 1.2 2.3 52* 3.6 2.9 124
SANDSTONE RS 8150 .4 .4 100* 2.5 1.9 132
WHISKEY PARK 8950 .7 1.3 54* 2.5 2.3 109
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Basin wide percent of average 51* 127
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .9 .9 100* 1.0 1.5 67
BLIND BULL SUM 8650 .4 1.2 33* 1.3 1.8 72
EAST RIM DIVIDE 7930 .2 .4 50* 1.5 1.1 136
ELKHART PARK G.S. 9400 1.2 .6 200* 1.6 1.5 107
GROS VENTRE SUMMIT 8775 1.1 1.1 100* 1.3 1.5 87
KENDALL R.S. 7740 .4 .4 100* 1.3 1.2 108
LOOMIS PARK 8240 .7 .7 100* 1.7 1.5 113
NEW FORK LAKE 8340 .5 .4 125* .5 1.2 42
SNIDER BASIN 8250 .5 .5 100* 1.2 1.3 92
SPRING CREEK DIVIDE 9000 1.0 1.1 91* 1.6 2.1 76
TRIPLE PEAK 8500 .6 .8 75* 2.0 1.8 111
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Basin wide percent of average 93* 91
LOWER GREEN RIVER
HAMS FORK 7840 .7 .3 233* 1.9 1.2 158
HEWINTA 9500 .2 .7 29* 1.8 1.9 95
HICKERSON PARK 9150 .1 .3 33* 1.7 1.4 121
HOLE-IN-ROCK 9150 .1 .3 33* 1.9 1.3 146
INDIAN CREEK 9425 1.9 1.1 173* 2.2 2.1 105
KELLEY R.S. 8180 .9 .7 129* 1.6 1.7 94
STEEL CREEK PARK 10100 .1 1.3 8* 1.2 1.9 63
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Basin wide percent of average 85* 107
UPPER BEAR RIVER
BUG LAKE 7950 .5 1.0 50* 1.6 1.9 84
HAYDEN FORK 9400 .9 .7 129* 2.6 1.9 137
KELLEY R.S. 8180 .9 .7 129* 1.6 1.7 94
LILY LAKE 9050 .9 .8 112* 2.3 1.9 121
MONTE CRISTO 8960 .7 1.3 54* 1.9 2.2 86
SALT RIVER SUMMIT 7600 .3 .2 150* 1.3 1.5 87
TRIAL LAKE 9960 .9 1.5 60* 2.7 2.2 123
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Basin wide percent of average 82* 105
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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.