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 WEDNESDAY: NOVEMBER 13 , 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 3.2 1.8 178 3.6 3.7 97
COTTONWOOD CREEK 7600 3.5 2.2 159* 4.7 5.1 92
GRANITE CREEK 6770 2.9 1.5 193* 3.8 3.2 119
GRASSY LAKE 7265 4.1 3.6 114* 5.2 5.9 88
GROS VENTRE SUMMIT 8775 2.7 2.3 117 2.6 2.9 90
LEWIS LAKE DIVIDE 7860 3.5 3.4 103* 4.9 5.9 83
PHILLIPS BENCH 8200 4.1 3.1 132 5.0 4.5 111
SALT RIVER SUMMIT 7600 1.6 1.1 145* 2.7 3.2 84
SNAKE RIVER STATION 6920 2.5 1.7 147* 3.7 3.9 95
SPRING CREEK DIVIDE 9000 3.5 3.3 106 3.9 4.5 87
THUMB DIVIDE 7980 2.5 1.9 132 3.6 3.4 106
TOGWOTEE PASS 9580 4.3 4.3 100 4.3 4.7 91
TWO OCEAN PLATEAU 9360 6.9 5.1 135 4.4 5.2 85
WILLOW CREEK 8450 3.2 4.0 80 5.3 6.0 88
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Basin wide percent of average 123 93
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 4.3 4.4 98 3.2 3.7 86
BLACK BEAR 8170 4.4 5.1 86 4.6 6.4 72
CANYON 8090 1.6 1.6 100 2.4 3.1 77
FISHER CREEK 9100 3.7 4.9 76 3.8 6.0 63
MADISON PLATEAU 7750 2.4 3.1 77 3.2 4.4 73
NORTHEAST ENTRANCE 7350 .7 1.0 70* 1.8 2.6 69
PARKER PEAK 9400 4.5 4.1 110 4.0 3.6 111
SYLVAN LAKE 8420 3.1 3.6 86 4.8 4.5 107
THUMB DIVIDE 7980 2.5 1.9 132 3.6 3.4 106
TWO OCEAN PLATEAU 9360 6.9 5.1 135 4.4 5.2 85
WHISKEY CREEK 6800 1.6 1.7 94* 2.5 3.7 68
WHITE MILL 8700 3.4 3.6 94 3.1 4.8 65
WOLVERINE 7650 .7 1.4 50 2.9 2.9 100
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Basin wide percent of average 96 82
WIND RIVER
BURROUGHS CREEK 8750 3.8 2.0 190 4.7 3.0 157
COLD SPRINGS 9630 1.9 2.0 95 3.2 2.9 110
DEER PARK 9700 3.2 3.6 89 3.6 4.4 82
HOBBS PARK 10100 3.8 3.5 109 4.0 3.2 125
LITTLE WARM 9370 2.2 2.0 110 2.7 2.9 93
SOUTH PASS 9040 2.8 2.9 97 3.5 3.7 95
ST. LAWRENCE ALT 8620 1.8 1.7 106 3.3 2.5 132
TOGWOTEE PASS 9580 4.3 4.3 100 4.3 4.7 91
TOWNSEND CREEK 8700 2.0 1.9 105 3.5 3.1 113
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Basin wide percent of average 108 108
BIGHORN BASIN
BALD MTN. 9380 3.6 4.3 84 3.3 3.6 92
BEAR TRAP MEADOW 8200 .9 1.0 90 1.7 2.4 71
BLACKWATER 9780 4.5 4.8 94 4.0 4.6 87
BONE SPRINGS DIV 9350 3.4 3.9 87 3.1 3.5 89
EVENING STAR 9200 3.2 4.9 65 4.0 5.0 80
GRAVE SPRINGS 8550 .7 1.9 37 1.8 2.8 64
KIRWIN 9550 2.6 2.8 93 3.1 2.8 111
MARQUETTE 8760 2.5 2.7 93 2.0 3.1 65
MIDDLE POWDER 7760 1.4 2.3 61 2.0 3.6 56
OWL CREEK 8975 2.1 1.4 150 2.1 1.6 131
POWDER RIVER PASS 9480 2.1 2.2 95 2.8 2.8 100
SHELL CREEK 9580 3.4 3.7 92 3.1 3.1 100
SYLVAN LAKE 8420 3.1 3.6 86 4.8 4.5 107
SYLVAN ROAD 7120 1.9 1.5 127 3.6 4.0 90
TIMBER CREEK 7950 1.6 1.8 89 2.6 2.2 118
YOUNTS PEAK 8350 3.2 2.6 123 3.2 3.2 100
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Basin wide percent of average 89 89
SHOSHONE RIVER
BLACKWATER 9780 4.5 4.8 94 4.0 4.6 87
EVENING STAR 9200 3.2 4.9 65 4.0 5.0 80
KIRWIN 9550 2.6 2.8 93 3.1 2.8 111
MARQUETTE 8760 2.5 2.7 93 2.0 3.1 65
SYLVAN LAKE 8420 3.1 3.6 86 4.8 4.5 107
SYLVAN ROAD 7120 1.9 1.5 127 3.6 4.0 90
YOUNTS PEAK 8350 3.2 2.6 123 3.2 3.2 100
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Basin wide percent of average 92 91
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .9 1.0 90 1.7 2.4 71
BIG GOOSE 7990 1.9 1.4 136 2.8 2.5 112
BONE SPRINGS DIV 9350 3.4 3.9 87 3.1 3.5 89
BURGESS JUNCTION 7880 1.9 2.5 76 2.6 3.1 84
CLOUD PEAK RESERVOIR 9860 2.3 2.5 92 2.8 3.6 78
DOME LAKE 8880 2.9 3.0 97 3.1 3.5 89
GRAVE SPRINGS 8550 .7 1.9 37 1.8 2.8 64
HANSEN SAWMILL 8360 1.7 1.2 142 2.4 2.4 100
MIDDLE POWDER 7760 1.4 2.3 61 2.0 3.6 56
POWDER RIVER PASS 9480 2.1 2.2 95 2.8 2.8 100
SUCKER CREEK 8880 2.0 2.3 87 3.3 3.3 100
TIE CREEK 6870 .7 1.2 58 2.6 3.0 87
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Basin wide percent of average 86 85
BELLE FOURCHE
BLIND PARK 6890 1.2 1.4 86 2.3 3.4 68
COLE CANYON 5910 .5 -M * 1.5 -M *
NORTH RAPID CREEK 6130 1.0 .9 111 2.0 3.1 65
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Basin wide percent of average 96 66
UPPER N. PLATTE RIVER
COLUMBINE 9400 3.2 2.4 133* 5.1 4.1 124
DIVIDE PEAK 8800 2.3 3.0 77 4.6 4.2 110
ELK RIVER 8700 2.1 1.5 140* 4.2 3.5 120
JOE WRIGHT 10120 3.8 4.2 90 5.6 5.2 108
NORTH FRENCH CREEK 10100 3.7 5.0 74 5.3 5.1 104
OLD BATTLE 10000 4.4 5.3 83 7.1 5.9 120
SAGE CREEK BASIN 7850 1.5 1.8 83 3.5 -M *
SOUTH BRUSH CREEK 8400 1.9 1.6 119 3.6 3.7 97
TOWER 10500 9.0 7.1 127 9.9 6.7 148
WEBBER SPRINGS 9200 3.4 3.7 92 4.9 5.0 98
WILLOW CREEK PASS 9540 4.6 2.2 209 4.1 3.0 137
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Basin wide percent of average 106 117
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 2.7 3.6 75 -M 4.0 *
CASPER MTN. 7900 1.4 2.9 48 2.1 3.6 58
DEADMAN HILL 10220 2.0 3.4 59 3.3 3.7 89
DEER PARK 9700 3.2 3.6 89 3.6 4.4 82
LAPRELE CREEK 8320 1.3 1.9 68 2.4 2.9 83
RENO HILL 8400 1.7 2.7 63 2.7 3.6 75
ROACH 9700 3.4 2.4 142 4.0 3.5 114
SAND LAKE 10080 3.3 5.6 59 4.6 4.8 96
SOUTH PASS 9040 2.8 2.9 97 3.5 3.7 95
WINDY PEAK 7840 1.6 1.3 123 2.4 2.6 92
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Basin wide percent of average 77 87
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .7 1.0 70* 3.8 3.0 127
DIVIDE PEAK 8800 2.3 3.0 77 4.6 4.2 110
OLD BATTLE 10000 4.4 5.3 83 7.1 5.9 120
SANDSTONE RS 8150 1.1 1.2 92* 4.2 3.6 117
WHISKEY PARK 8950 3.0 3.4 88 5.1 4.9 104
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Basin wide percent of average 83 115
UPPER GREEN RIVER
BIG SANDY OPENING 9100 2.3 2.2 105 2.2 2.9 76
BLIND BULL SUM 8650 3.1 3.6 86 3.4 3.9 87
EAST RIM DIVIDE 7930 1.4 1.6 87 2.4 2.2 109
ELKHART PARK G.S. 9400 2.7 1.8 150 2.9 3.0 97
GROS VENTRE SUMMIT 8775 2.7 2.3 117 2.6 2.9 90
KENDALL R.S. 7740 2.3 1.6 144 2.8 2.6 108
LOOMIS PARK 8240 2.7 2.1 129 3.3 3.1 106
NEW FORK LAKE 8340 1.9 1.4 136 2.3 2.5 92
SNIDER BASIN 8250 1.7 1.7 100 2.4 2.8 86
SPRING CREEK DIVIDE 9000 3.5 3.3 106 3.9 4.5 87
TRIPLE PEAK 8500 2.9 3.0 97 4.5 4.0 112
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Basin wide percent of average 111 95
LOWER GREEN RIVER
HAMS FORK 7840 2.4 1.1 218* 3.3 2.3 143
HEWINTA 9500 2.1 1.3 162 3.3 3.5 94
HICKERSON PARK 9150 .6 .8 75 2.7 2.4 113
HOLE-IN-ROCK 9150 1.3 .9 144 2.9 2.2 132
INDIAN CREEK 9425 3.9 3.4 115 3.8 4.4 86
KELLEY R.S. 8180 2.1 2.1 100 2.8 3.6 78
STEEL CREEK PARK 10100 1.5 2.6 58 3.1 3.5 89
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Basin wide percent of average 114 100
UPPER BEAR RIVER
BUG LAKE 7950 3.6 2.2 164 4.3 3.7 116
HAYDEN FORK 9400 3.0 1.7 176 5.2 3.9 133
KELLEY R.S. 8180 2.1 2.1 100 2.8 3.6 78
LILY LAKE 9050 2.1 1.7 124 4.2 3.8 111
MONTE CRISTO 8960 4.6 2.8 164* 5.6 4.7 119
SALT RIVER SUMMIT 7600 1.6 1.1 145* 2.7 3.2 84
TRIAL LAKE 9960 3.3 3.3 100 5.5 4.4 125
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Basin wide percent of average 136 111
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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.