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 29 , 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 .4 .6 67* .9 1.9 47
COTTONWOOD CREEK 7600 1.4 .8 175* 2.5 2.8 89
GRANITE CREEK 6770 .5 .5 100* 1.6 1.6 100
GRASSY LAKE 7265 1.0 1.3 77* 2.2 3.2 69
GROS VENTRE SUMMIT 8775 1.3 1.3 100* 1.5 1.7 88
LEWIS LAKE DIVIDE 7860 .5 1.1 45* 1.9 3.0 63
PHILLIPS BENCH 8200 .9 1.3 69* 1.8 2.3 78
SALT RIVER SUMMIT 7600 .4 .3 133* 1.5 1.8 83
SNAKE RIVER STATION 6920 .3 .5 60* 1.8 2.1 86
SPRING CREEK DIVIDE 9000 -M 1.4 * -M 2.4 *
THUMB DIVIDE 7980 .6 .8 75* 2.0 1.9 105
TOGWOTEE PASS 9580 1.6 2.4 67* 1.5 2.6 58
TWO OCEAN PLATEAU 9360 3.8 2.8 136* 2.3 2.9 79
WILLOW CREEK 8450 .6 1.6 37* 2.3 3.4 68
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Basin wide percent of average 87* 76
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 2.8 2.5 112* 2.3 2.0 115
BLACK BEAR 8170 2.1 2.5 84* 2.5 3.3 76
CANYON 8090 1.0 .6 167* 1.7 1.7 100
FISHER CREEK 9100 2.2 2.5 88* 2.3 3.1 74
MADISON PLATEAU 7750 .9 1.5 60* 1.7 2.3 74
NORTHEAST ENTRANCE 7350 .3 .3 100* 1.4 1.4 100
PARKER PEAK 9400 2.8 2.4 117* 2.8 2.2 127
SYLVAN LAKE 8420 1.2 1.8 67* 2.9 2.4 121
THUMB DIVIDE 7980 .6 .8 75* 2.0 1.9 105
TWO OCEAN PLATEAU 9360 3.8 2.8 136* 2.3 2.9 79
WHISKEY CREEK 6800 .5 .7 71* 1.3 2.1 62
WHITE MILL 8700 2.2 1.9 116* 2.0 2.5 80
WOLVERINE 7650 .2 .4 50* 2.0 1.7 118
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Basin wide percent of average 100* 92
WIND RIVER
BURROUGHS CREEK 8750 1.8 .9 200* 2.1 1.5 140
COLD SPRINGS 9630 1.0 .9 111 2.1 1.8 117
DEER PARK 9700 1.0 2.4 42 1.5 2.3 65
HOBBS PARK 10100 2.8 2.0 140 2.5 2.0 125
LITTLE WARM 9370 .9 1.0 90* 1.4 1.6 87
SOUTH PASS 9040 .9 1.4 64* 1.6 2.0 80
ST. LAWRENCE ALT 8620 .9 .8 112 2.5 1.6 156
TOGWOTEE PASS 9580 1.6 2.4 67* 1.5 2.6 58
TOWNSEND CREEK 8700 1.1 1.0 110* 2.5 2.0 125
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Basin wide percent of average 94* 102
BIGHORN BASIN
BALD MTN. 9380 2.7 2.6 104 2.5 2.3 109
BEAR TRAP MEADOW 8200 .4 .5 80 1.2 1.6 75
BLACKWATER 9780 2.9 2.9 100 2.6 2.5 104
BONE SPRINGS DIV 9350 2.7 2.5 108 2.4 2.3 104
EVENING STAR 9200 1.8 2.5 72* 2.3 2.6 88
GRAVE SPRINGS 8550 .1 1.0 10* 1.0 2.0 50
KIRWIN 9550 1.5 1.7 88 1.6 1.7 94
MARQUETTE 8760 1.9 1.8 106 1.6 2.2 73
MIDDLE POWDER 7760 .7 1.2 58* 1.2 2.4 50
OWL CREEK 8975 1.5 .8 188 1.5 1.1 136
POWDER RIVER PASS 9480 1.4 1.2 117* 2.1 1.8 117
SHELL CREEK 9580 2.6 2.5 104 2.6 1.9 137
SYLVAN LAKE 8420 1.2 1.8 67* 2.9 2.4 121
SYLVAN ROAD 7120 .7 .4 175* 2.1 2.0 105
TIMBER CREEK 7950 1.2 .9 133 2.4 1.5 160
YOUNTS PEAK 8350 1.5 1.3 115* 1.5 1.7 88
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Basin wide percent of average 97 98
SHOSHONE RIVER
BLACKWATER 9780 2.9 2.9 100 2.6 2.5 104
EVENING STAR 9200 1.8 2.5 72* 2.3 2.6 88
KIRWIN 9550 1.5 1.7 88 1.6 1.7 94
MARQUETTE 8760 1.9 1.8 106 1.6 2.2 73
SYLVAN LAKE 8420 1.2 1.8 67* 2.9 2.4 121
SYLVAN ROAD 7120 .7 .4 175* 2.1 2.0 105
YOUNTS PEAK 8350 1.5 1.3 115* 1.5 1.7 88
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Basin wide percent of average 93* 97
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .4 .5 80 1.2 1.6 75
BIG GOOSE 7990 1.2 .8 150* 2.2 2.0 110
BONE SPRINGS DIV 9350 2.7 2.5 108 2.4 2.3 104
BURGESS JUNCTION 7880 .9 1.4 64 2.0 2.1 95
CLOUD PEAK RESERVOIR 9860 1.7 1.4 121* 2.0 2.4 83
DOME LAKE 8880 2.1 1.7 124 2.6 2.3 113
GRAVE SPRINGS 8550 .1 1.0 10* 1.0 2.0 50
HANSEN SAWMILL 8360 1.2 .8 150 1.9 1.7 112
MIDDLE POWDER 7760 .7 1.2 58* 1.2 2.4 50
POWDER RIVER PASS 9480 1.4 1.2 117* 2.1 1.8 117
SUCKER CREEK 8880 1.5 1.2 125* 2.2 2.3 96
TIE CREEK 6870 .4 .7 57 1.9 2.3 83
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Basin wide percent of average 99 90
BELLE FOURCHE
BLIND PARK 6890 .8 .5 160* 1.7 2.4 71
COLE CANYON 5910 .2 -M * .9 -M *
NORTH RAPID CREEK 6130 .8 .4 200* 1.5 2.3 65
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Basin wide percent of average 178* 68
UPPER N. PLATTE RIVER
COLUMBINE 9400 .2 .7 29* 2.1 2.3 91
DIVIDE PEAK 8800 1.2 1.6 75* 3.1 2.5 124
ELK RIVER 8700 .3 .6 50* 2.2 2.1 105
JOE WRIGHT 10120 .9 2.4 38* 2.2 3.2 69
NORTH FRENCH CREEK 10100 1.2 3.0 40* 3.2 3.2 100
OLD BATTLE 10000 1.6 2.8 57* 4.0 3.3 121
SAGE CREEK BASIN 7850 .3 .9 33* 2.2 -M *
SOUTH BRUSH CREEK 8400 .9 .7 129* 2.7 2.4 113
TOWER 10500 3.4 3.2 106* 4.4 3.7 119
WEBBER SPRINGS 9200 1.0 1.7 59* 2.4 2.9 83
WILLOW CREEK PASS 9540 1.4 1.0 140* 1.7 1.9 89
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Basin wide percent of average 67* 102
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .6 2.1 29* 2.3 2.3 100
CASPER MTN. 7900 .1 1.6 6* 1.3 2.3 57
DEADMAN HILL 10220 .2 2.1 10 1.2 2.3 52
DEER PARK 9700 1.0 2.4 42 1.5 2.3 65
LAPRELE CREEK 8320 .3 1.0 30* 1.2 1.8 67
RENO HILL 8400 .5 1.6 31 1.6 2.3 70
ROACH 9700 .8 1.1 73* 1.3 2.2 59
SAND LAKE 10080 1.3 3.0 43* 2.9 2.9 100
SOUTH PASS 9040 .9 1.4 64* 1.6 2.0 80
WINDY PEAK 7840 .6 .5 120* 1.4 1.6 87
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Basin wide percent of average 38* 74
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .3 .5 60* 2.8 1.8 156
DIVIDE PEAK 8800 1.2 1.6 75* 3.1 2.5 124
OLD BATTLE 10000 1.6 2.8 57* 4.0 3.3 121
SANDSTONE RS 8150 .3 .5 60* 2.9 2.2 132
WHISKEY PARK 8950 .7 1.6 44* 2.8 2.7 104
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Basin wide percent of average 59* 125
UPPER GREEN RIVER
BIG SANDY OPENING 9100 1.2 1.1 109* 1.3 1.7 76
BLIND BULL SUM 8650 .3 1.6 19* 1.3 2.1 62
EAST RIM DIVIDE 7930 .3 .6 50* 1.4 1.3 108
ELKHART PARK G.S. 9400 1.3 .8 162* 1.6 1.8 89
GROS VENTRE SUMMIT 8775 1.3 1.3 100* 1.5 1.7 88
KENDALL R.S. 7740 .6 .6 100* 1.3 1.4 93
LOOMIS PARK 8240 .8 .9 89* 1.7 1.7 100
NEW FORK LAKE 8340 .6 .5 120* 1.2 1.4 86
SNIDER BASIN 8250 .3 .7 43* 1.2 1.5 80
SPRING CREEK DIVIDE 9000 -M 1.4 * -M 2.4 *
TRIPLE PEAK 8500 .6 1.1 55* 2.0 2.1 95
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Basin wide percent of average 79* 87
LOWER GREEN RIVER
HAMS FORK 7840 .7 .4 175* 2.0 1.4 143
HEWINTA 9500 .1 .8 12* 1.9 2.3 83
HICKERSON PARK 9150 .6 .4 150* 1.9 1.6 119
HOLE-IN-ROCK 9150 .2 .4 50* 1.9 1.5 127
INDIAN CREEK 9425 2.0 1.4 143* 2.2 2.4 92
KELLEY R.S. 8180 .9 .9 100* 1.7 2.0 85
STEEL CREEK PARK 10100 .4 1.5 27* 1.4 2.2 64
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Basin wide percent of average 84* 97
UPPER BEAR RIVER
BUG LAKE 7950 .7 1.2 58* 1.7 2.2 77
HAYDEN FORK 9400 .7 .8 87* 2.7 2.3 117
KELLEY R.S. 8180 .9 .9 100* 1.7 2.0 85
LILY LAKE 9050 1.0 .9 111* 2.5 2.3 109
MONTE CRISTO 8960 1.0 1.5 67* 2.1 2.6 81
SALT RIVER SUMMIT 7600 .4 .3 133* 1.5 1.8 83
TRIAL LAKE 9960 .8 1.8 44* 2.9 2.6 112
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Basin wide percent of average 74* 96
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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.