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: DECEMBER 7 , 2010
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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 6.7 4.9 137 9.3 7.0 133
COTTONWOOD CREEK 7670 10.1 5.6 180 14.0 9.0 156
GRAND TARGHEE 9260 17.9 -M * 13.4 -M *
GRANITE CREEK 6770 6.2 4.2 148 8.7 6.2 140
GRASSY LAKE 7265 10.2 9.0 113 13.5 11.1 122
GROS VENTRE SUMMIT 8750 5.7 4.5 127 6.0 4.7 128
GUNSIGHT PASS 9820 6.0 -M * 6.3 -M *
LEWIS LAKE DIVIDE 7850 11.4 9.1 125 13.7 11.4 120
PHILLIPS BENCH 8200 11.1 7.6 146 12.6 8.6 147
SALT RIVER SUMMIT 7760 4.9 3.2 153 8.4 5.7 147
SNAKE RIVER STATION 6920 5.6 4.8 117 10.2 7.4 138
SPRING CREEK DIVIDE 9000 10.6 8.1 131 11.8 8.4 140
THUMB DIVIDE 7980 7.0 4.7 149 8.0 6.1 131
TOGWOTEE PASS 9580 10.6 7.9 134 11.6 8.2 141
TWO OCEAN PLATEAU 9240 13.6 9.4 145 11.0 9.3 118
WILLOW CREEK 8380 10.4 9.0 116 15.4 10.6 145
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Basin wide percent of average 135 136
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 8.6 7.9 109 8.7 6.8 128
BLACK BEAR 8170 13.6 11.2 121 15.4 11.9 129
CANYON 7870 5.5 3.9 141 6.9 5.4 128
FISHER CREEK 9100 11.9 10.9 109 12.8 11.3 113
MADISON PLATEAU 7750 8.4 7.3 115 10.5 8.4 125
NORTHEAST ENTRANCE 7350 3.2 3.1 103 5.5 4.5 122
PARKER PEAK 9400 9.6 7.5 128 10.4 6.1 170
SYLVAN LAKE 8420 7.3 7.3 100 9.9 8.0 124
THUMB DIVIDE 7980 7.0 4.7 149 8.0 6.1 131
TWO OCEAN PLATEAU 9240 13.6 9.4 145 11.0 9.3 118
WHISKEY CREEK 6800 5.1 4.6 111 8.0 6.7 119
WHITE MILL 8700 8.5 7.7 110 9.7 8.8 110
WOLVERINE 7650 4.5 3.6 125 5.4 5.0 108
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Basin wide percent of average 120 124
WIND RIVER
BURROUGHS CREEK 8750 4.9 4.6 107 5.4 5.5 98
CASTLE CREEK 8400 2.2 -M * 3.0 -M *
COLD SPRINGS 9630 3.2 3.4 94 3.3 4.5 73
DEER PARK 9700 8.1 4.9 165 8.8 7.8 113
HOBBS PARK 10100 6.2 5.9 105 5.6 5.0 112
LITTLE WARM 9370 4.2 3.9 108 4.3 5.1 84
SOUTH PASS 9040 6.3 5.7 111 6.2 6.7 93
ST. LAWRENCE ALT 8620 2.1 2.9 72 2.9 3.7 78
TOGWOTEE PASS 9580 10.6 7.9 134 11.6 8.2 141
TOWNSEND CREEK 8700 3.6 3.2 113 5.3 4.8 110
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Basin wide percent of average 116 104
BIGHORN BASIN
BALD MTN. 9380 6.9 6.7 103 6.6 5.9 112
BEAR TRAP MEADOW 8200 1.7 1.9 89 3.0 3.6 83
BLACKWATER 9780 9.4 8.9 106 9.0 8.1 111
BONE SPRINGS DIV 9350 5.2 5.8 90 4.4 5.3 83
EVENING STAR 9200 9.9 9.7 102 11.5 9.2 125
GRAVE SPRINGS 8550 2.8 2.8 100 3.3 3.9 85
KIRWIN 9550 5.1 4.6 111 5.5 4.5 122
MARQUETTE 8760 1.3 4.0 33 2.6 4.4 59
MIDDLE POWDER 7760 4.0 3.9 103 2.8 5.3 53
OWL CREEK 8975 1.6 2.0 80 2.0 2.4 83
POWDER RIVER PASS 9480 4.1 3.7 111 5.0 4.5 111
SHELL CREEK 9580 5.0 5.5 91 4.4 4.9 90
SYLVAN LAKE 8420 7.3 7.3 100 9.9 8.0 124
SYLVAN ROAD 7120 4.2 4.2 100 6.8 7.5 91
TIMBER CREEK 7950 1.7 2.5 68 2.2 3.2 69
YOUNTS PEAK 8350 6.5 5.5 118 6.0 5.8 103
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Basin wide percent of average 97 98
SHOSHONE RIVER
BLACKWATER 9780 9.4 8.9 106 9.0 8.1 111
EVENING STAR 9200 9.9 9.7 102 11.5 9.2 125
KIRWIN 9550 5.1 4.6 111 5.5 4.5 122
MARQUETTE 8760 1.3 4.0 33 2.6 4.4 59
SYLVAN LAKE 8420 7.3 7.3 100 9.9 8.0 124
SYLVAN ROAD 7120 4.2 4.2 100 6.8 7.5 91
YOUNTS PEAK 8350 6.5 5.5 118 6.0 5.8 103
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Basin wide percent of average 99 108
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.7 1.9 89 3.0 3.6 83
BIG GOOSE 7990 1.6 2.7 59 3.3 3.4 97
BONE SPRINGS DIV 9350 5.2 5.8 90 4.4 5.3 83
BURGESS JUNCTION 7880 2.5 3.8 66 3.9 4.6 85
CLOUD PEAK RESERVOIR 9860 4.7 4.1 115 5.6 5.2 108
DOME LAKE 8880 2.0 4.6 43 4.1 5.3 77
GRAVE SPRINGS 8550 2.8 2.8 100 3.3 3.9 85
HANSEN SAWMILL 8360 1.5 2.3 65 2.0 3.4 59
LITTLE GOOSE 8870 2.1 -M * 5.6 -M *
MIDDLE POWDER 7760 4.0 3.9 103 2.8 5.3 53
POWDER RIVER PASS 9480 4.1 3.7 111 5.0 4.5 111
SOLDIER PARK 8720 1.2 -M * 2.8 -M *
SUCKER CREEK 8880 3.5 3.5 100 3.9 4.9 80
TIE CREEK 6870 1.5 1.2 125 3.1 4.0 78
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Basin wide percent of average 87 83
BELLE FOURCHE
BLIND PARK 6890 1.4 2.2 64 6.7 4.8 140
COLE CANYON 5910 2.2 2.3 96 4.2 3.2 131
NORTH RAPID CREEK 6130 2.0 2.0 100 5.9 4.1 144
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Basin wide percent of average 86 139
UPPER N. PLATTE RIVER
COLUMBINE 9160 9.3 5.9 158 12.7 7.4 172
DIVIDE PEAK 8880 6.7 5.8 116 10.2 7.0 146
ELK RIVER 8700 5.4 3.8 142 8.9 5.9 151
JOE WRIGHT 10120 10.4 6.9 151 15.0 8.6 174
NORTH FRENCH CREEK 10130 14.6 8.9 164 15.1 8.3 182
OLD BATTLE 10000 12.9 10.3 125 15.0 10.6 142
SAGE CREEK BASIN 7850 3.9 3.4 115 7.0 4.0 175
SOUTH BRUSH CREEK 8440 6.1 3.3 185 9.4 5.7 165
TOWER 10500 17.5 14.3 122 19.8 12.1 164
WEBBER SPRINGS 9250 8.4 7.6 111 12.6 8.8 143
WILLOW CREEK PASS 9540 6.2 4.0 155 7.4 4.8 154
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Basin wide percent of average 137 160
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 9.2 6.9 133 10.7 7.0 153
CASPER MTN. 7900 3.4 5.1 67 6.1 5.7 107
DEADMAN HILL 10220 5.6 5.5 102 10.1 5.8 174
DEER PARK 9700 8.1 4.9 165 8.8 7.8 113
LAPRELE CREEK 8375 3.1 3.6 86 4.6 4.7 98
RENO HILL 8400 4.5 4.7 96 6.4 5.5 116
ROACH 9700 6.7 4.9 137 9.2 5.9 156
SAND LAKE 10050 13.2 10.4 127 12.9 8.0 161
SOUTH PASS 9040 6.3 5.7 111 6.2 6.7 93
WINDY PEAK 7900 2.5 2.6 96 4.9 4.1 120
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Basin wide percent of average 115 131
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.1 2.2 141 5.7 4.9 116
DIVIDE PEAK 8880 6.7 5.8 116 10.2 7.0 146
OLD BATTLE 10000 12.9 10.3 125 15.0 10.6 142
SANDSTONE RS 8150 2.7 2.9 93 8.6 6.1 141
WHISKEY PARK 8950 9.2 7.0 131 12.9 8.9 145
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Basin wide percent of average 123 140
UPPER GREEN RIVER
BIG SANDY OPENING 9080 5.0 4.6 109 5.8 4.7 123
BLIND BULL SUM 8650 9.2 8.3 111 6.7 7.4 91
EAST RIM DIVIDE 7930 3.6 3.8 95 4.1 3.9 105
ELKHART PARK G.S. 9400 3.5 4.1 85 4.3 4.9 88
GROS VENTRE SUMMIT 8750 5.7 4.5 127 6.0 4.7 128
GUNSIGHT PASS 9820 6.0 -M * 6.3 -M *
KENDALL R.S. 7740 3.4 3.9 87 5.2 4.6 113
LOOMIS PARK 8240 5.7 5.1 112 6.6 5.6 118
NEW FORK LAKE 8340 3.6 3.3 109 3.7 4.2 88
POCKET CREEK 9360 4.2 -M * 5.3 -M *
SNIDER BASIN 8060 6.4 4.3 149 7.5 5.1 147
SPRING CREEK DIVIDE 9000 10.6 8.1 131 11.8 8.4 140
TRIPLE PEAK 8500 9.5 7.5 127 11.6 7.4 157
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Basin wide percent of average 115 120
LOWER GREEN RIVER
HAMS FORK 7840 4.3 3.1 139 5.6 4.0 140
HEWINTA 9519 2.1 2.5 84 6.2 5.4 115
HICKERSON PARK 9145 1.3 1.7 76 3.4 3.4 100
HOLE-IN-ROCK 9150 1.5 1.7 88 3.7 3.2 116
INDIAN CREEK 9425 10.9 7.8 140 10.7 8.0 134
KELLEY R.S. 8180 6.9 4.9 141 9.5 6.5 146
STEEL CREEK PARK 10200 4.1 4.5 91 7.3 5.7 128
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Basin wide percent of average 119 128
UPPER BEAR RIVER
BUG LAKE 7950 7.7 4.8 160 10.5 6.4 164
HAYDEN FORK 9212 4.9 3.6 136 11.2 6.9 162
KELLEY R.S. 8180 6.9 4.9 141 9.5 6.5 146
LILY LAKE 9156 5.2 3.4 153 8.5 6.3 135
MONTE CRISTO 8960 10.5 6.2 169 13.1 8.3 158
SALT RIVER SUMMIT 7760 4.9 3.2 153 8.4 5.7 147
TRIAL LAKE 9992 10.2 6.5 157 12.4 7.6 163
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Basin wide percent of average 154 154
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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.