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 MONDAY: DECEMBER 6 , 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 6.6 4.8 138 9.1 6.9 132
COTTONWOOD CREEK 7670 9.7 5.5 176 13.6 8.9 153
GRAND TARGHEE 9260 17.5 -M * 13.1 -M *
GRANITE CREEK 6770 5.8 4.1 141 8.4 6.1 138
GRASSY LAKE 7265 9.8 8.8 111 13.1 10.8 121
GROS VENTRE SUMMIT 8750 5.5 4.4 125 5.8 4.6 126
GUNSIGHT PASS 9820 5.7 -M * 6.1 -M *
LEWIS LAKE DIVIDE 7850 11.0 8.9 124 13.5 11.2 121
PHILLIPS BENCH 8200 10.6 7.4 143 12.1 8.4 144
SALT RIVER SUMMIT 7760 4.6 3.1 148 8.0 5.6 143
SNAKE RIVER STATION 6920 5.5 4.7 117 10.1 7.2 140
SPRING CREEK DIVIDE 9000 10.2 7.9 129 11.3 8.2 138
THUMB DIVIDE 7980 7.0 4.6 152 8.0 6.0 133
TOGWOTEE PASS 9580 10.3 7.8 132 11.2 8.1 138
TWO OCEAN PLATEAU 9240 13.3 9.2 145 10.9 9.1 120
WILLOW CREEK 8380 10.0 8.8 114 15.0 10.4 144
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Basin wide percent of average 133 135
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 8.4 7.8 108 8.4 6.6 127
BLACK BEAR 8170 13.3 11.0 121 15.1 11.7 129
CANYON 7870 5.4 3.8 142 6.8 5.3 128
FISHER CREEK 9100 11.8 10.7 110 12.7 11.0 115
MADISON PLATEAU 7750 8.3 7.1 117 10.4 8.2 127
NORTHEAST ENTRANCE 7350 3.2 3.0 107 5.4 4.4 123
PARKER PEAK 9400 9.5 7.4 128 10.3 6.0 172
SYLVAN LAKE 8420 7.0 7.2 97 9.6 7.8 123
THUMB DIVIDE 7980 7.0 4.6 152 8.0 6.0 133
TWO OCEAN PLATEAU 9240 13.3 9.2 145 10.9 9.1 120
WHISKEY CREEK 6800 5.0 4.5 111 7.9 6.6 120
WHITE MILL 8700 8.4 7.5 112 9.6 8.6 112
WOLVERINE 7650 4.5 3.4 132 5.3 5.0 106
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Basin wide percent of average 121 125
WIND RIVER
BURROUGHS CREEK 8750 4.8 4.5 107 5.3 5.4 98
CASTLE CREEK 8400 2.1 -M * 2.8 -M *
COLD SPRINGS 9630 3.1 3.4 91 3.3 4.5 73
DEER PARK 9700 8.0 4.8 167 8.7 7.7 113
HOBBS PARK 10100 6.2 5.8 107 5.5 4.9 112
LITTLE WARM 9370 4.1 3.8 108 4.2 5.0 84
SOUTH PASS 9040 6.3 5.6 113 6.1 6.6 92
ST. LAWRENCE ALT 8620 1.9 2.8 68 2.8 3.7 76
TOGWOTEE PASS 9580 10.3 7.8 132 11.2 8.1 138
TOWNSEND CREEK 8700 3.5 3.1 113 5.3 4.8 110
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Basin wide percent of average 116 103
BIGHORN BASIN
BALD MTN. 9380 6.9 6.5 106 6.6 5.8 114
BEAR TRAP MEADOW 8200 1.6 1.9 84 2.9 3.6 81
BLACKWATER 9780 9.3 8.8 106 8.7 7.9 110
BONE SPRINGS DIV 9350 5.2 5.7 91 4.3 5.3 81
EVENING STAR 9200 9.7 9.5 102 11.1 9.0 123
GRAVE SPRINGS 8550 2.7 2.8 96 3.3 3.8 87
KIRWIN 9550 4.9 4.5 109 5.3 4.4 120
MARQUETTE 8760 1.1 3.9 28 2.4 4.3 56
MIDDLE POWDER 7760 4.0 3.8 105 2.8 5.2 54
OWL CREEK 8975 1.6 2.0 80 2.0 2.3 87
POWDER RIVER PASS 9480 4.1 3.7 111 4.8 4.4 109
SHELL CREEK 9580 5.0 5.4 93 4.4 4.9 90
SYLVAN LAKE 8420 7.0 7.2 97 9.6 7.8 123
SYLVAN ROAD 7120 4.1 4.1 100 6.7 7.3 92
TIMBER CREEK 7950 1.5 2.5 60 2.1 3.1 68
YOUNTS PEAK 8350 6.3 5.4 117 5.9 5.7 104
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Basin wide percent of average 97 98
SHOSHONE RIVER
BLACKWATER 9780 9.3 8.8 106 8.7 7.9 110
EVENING STAR 9200 9.7 9.5 102 11.1 9.0 123
KIRWIN 9550 4.9 4.5 109 5.3 4.4 120
MARQUETTE 8760 1.1 3.9 28 2.4 4.3 56
SYLVAN LAKE 8420 7.0 7.2 97 9.6 7.8 123
SYLVAN ROAD 7120 4.1 4.1 100 6.7 7.3 92
YOUNTS PEAK 8350 6.3 5.4 117 5.9 5.7 104
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Basin wide percent of average 98 107
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.6 1.9 84 2.9 3.6 81
BIG GOOSE 7990 1.5 2.7 56 3.3 3.3 100
BONE SPRINGS DIV 9350 5.2 5.7 91 4.3 5.3 81
BURGESS JUNCTION 7880 2.4 3.7 65 3.8 4.5 84
CLOUD PEAK RESERVOIR 9860 4.7 4.1 115 5.6 5.2 108
DOME LAKE 8880 1.9 4.5 42 4.0 5.2 77
GRAVE SPRINGS 8550 2.7 2.8 96 3.3 3.8 87
HANSEN SAWMILL 8360 1.4 2.2 64 2.0 3.4 59
LITTLE GOOSE 8870 2.1 -M * 5.6 -M *
MIDDLE POWDER 7760 4.0 3.8 105 2.8 5.2 54
POWDER RIVER PASS 9480 4.1 3.7 111 4.8 4.4 109
SOLDIER PARK 8720 1.0 -M * 2.6 -M *
SUCKER CREEK 8880 3.4 3.5 97 3.8 4.8 79
TIE CREEK 6870 1.4 1.2 117 2.9 3.9 74
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Basin wide percent of average 86 83
BELLE FOURCHE
BLIND PARK 6890 1.4 2.2 64 6.7 4.7 143
COLE CANYON 5910 2.1 2.2 95 4.2 3.1 135
NORTH RAPID CREEK 6130 2.0 1.9 105 5.8 4.0 145
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Basin wide percent of average 87 142
UPPER N. PLATTE RIVER
COLUMBINE 9160 8.9 5.7 156 12.3 7.2 171
DIVIDE PEAK 8880 6.4 5.7 112 9.9 6.8 146
ELK RIVER 8700 -M 3.7 * -M 5.8 *
JOE WRIGHT 10120 10.0 6.8 147 14.7 8.4 175
NORTH FRENCH CREEK 10130 14.3 8.7 164 15.0 8.2 183
OLD BATTLE 10000 12.5 10.1 124 14.5 10.4 139
SAGE CREEK BASIN 7850 3.7 3.3 112 6.8 4.0 170
SOUTH BRUSH CREEK 8440 6.0 3.2 188 9.3 5.6 166
TOWER 10500 16.9 14.0 121 19.4 11.8 164
WEBBER SPRINGS 9250 8.1 7.5 108 12.2 8.6 142
WILLOW CREEK PASS 9540 6.0 3.9 154 7.3 4.7 155
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Basin wide percent of average 135 160
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 8.9 6.7 133 10.6 6.9 154
CASPER MTN. 7900 3.2 5.0 64 5.9 5.6 105
DEADMAN HILL 10220 5.6 5.5 102 9.9 5.7 174
DEER PARK 9700 8.0 4.8 167 8.7 7.7 113
LAPRELE CREEK 8375 2.9 3.5 83 4.4 4.6 96
RENO HILL 8400 4.4 4.7 94 6.3 5.5 115
ROACH 9700 6.5 4.8 135 9.1 5.8 157
SAND LAKE 10050 13.0 10.2 127 12.7 7.9 161
SOUTH PASS 9040 6.3 5.6 113 6.1 6.6 92
WINDY PEAK 7900 2.3 2.5 92 4.7 4.0 118
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Basin wide percent of average 115 130
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.0 2.1 143 5.4 4.8 113
DIVIDE PEAK 8880 6.4 5.7 112 9.9 6.8 146
OLD BATTLE 10000 12.5 10.1 124 14.5 10.4 139
SANDSTONE RS 8150 2.5 2.8 89 8.4 6.0 140
WHISKEY PARK 8950 5.7 6.9 83 12.4 8.8 141
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Basin wide percent of average 109 138
UPPER GREEN RIVER
BIG SANDY OPENING 9080 4.6 4.5 102 5.4 4.7 115
BLIND BULL SUM 8650 8.7 8.1 107 6.4 7.2 89
EAST RIM DIVIDE 7930 3.4 3.7 92 4.0 3.9 103
ELKHART PARK G.S. 9400 3.2 4.0 80 4.0 4.8 83
GROS VENTRE SUMMIT 8750 5.5 4.4 125 5.8 4.6 126
GUNSIGHT PASS 9820 5.7 -M * 6.1 -M *
KENDALL R.S. 7740 3.1 3.8 82 4.9 4.5 109
LOOMIS PARK 8240 5.4 5.0 108 6.3 5.5 115
NEW FORK LAKE 8340 3.3 3.2 103 3.5 4.1 85
POCKET CREEK 9360 3.8 -M * 4.9 -M *
SNIDER BASIN 8060 6.1 4.2 145 7.2 5.0 144
SPRING CREEK DIVIDE 9000 10.2 7.9 129 11.3 8.2 138
TRIPLE PEAK 8500 8.9 7.3 122 11.1 7.3 152
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Basin wide percent of average 111 117
LOWER GREEN RIVER
HAMS FORK 7840 3.9 3.0 130 5.3 3.9 136
HEWINTA 9519 1.6 2.4 67 5.7 5.3 108
HICKERSON PARK 9145 1.1 1.7 65 3.1 3.4 91
HOLE-IN-ROCK 9150 1.3 1.7 76 3.6 3.1 116
INDIAN CREEK 9425 10.4 7.6 137 10.3 7.8 132
KELLEY R.S. 8180 6.6 4.8 138 8.9 6.4 139
STEEL CREEK PARK 10200 3.8 4.4 86 7.0 5.6 125
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Basin wide percent of average 112 124
UPPER BEAR RIVER
BUG LAKE 7950 7.1 4.7 151 10.1 6.3 160
HAYDEN FORK 9212 4.4 3.5 126 10.6 6.8 156
KELLEY R.S. 8180 6.6 4.8 138 8.9 6.4 139
LILY LAKE 9156 4.6 3.3 139 8.1 6.2 131
MONTE CRISTO 8960 9.7 6.0 162 12.5 8.1 154
SALT RIVER SUMMIT 7760 4.6 3.1 148 8.0 5.6 143
TRIAL LAKE 9992 9.8 6.4 153 11.9 7.4 161
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Basin wide percent of average 147 150
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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.