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: DECEMBER 10 , 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 7.1 5.3 134 9.7 7.4 131
COTTONWOOD CREEK 7670 10.3 6.1 169 14.3 9.6 149
GRAND TARGHEE 9260 18.2 -M * 13.7 -M *
GRANITE CREEK 6770 6.4 4.6 139 8.9 6.6 135
GRASSY LAKE 7265 10.8 9.7 111 14.1 11.8 119
GROS VENTRE SUMMIT 8750 6.0 4.8 125 6.2 4.9 127
GUNSIGHT PASS 9820 6.3 -M * 6.7 -M *
LEWIS LAKE DIVIDE 7850 12.3 9.8 126 14.6 12.2 120
PHILLIPS BENCH 8200 11.5 8.3 139 13.0 9.2 141
SALT RIVER SUMMIT 7760 5.0 3.4 147 8.6 6.1 141
SNAKE RIVER STATION 6920 5.8 5.2 112 10.6 7.9 134
SPRING CREEK DIVIDE 9000 11.0 8.6 128 12.1 9.0 134
THUMB DIVIDE 7980 7.4 5.1 145 8.4 6.5 129
TOGWOTEE PASS 9580 11.1 8.4 132 12.0 8.7 138
TWO OCEAN PLATEAU 9240 14.2 9.9 143 11.4 9.9 115
WILLOW CREEK 8380 10.6 9.6 110 15.7 11.2 140
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Basin wide percent of average 131 132
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 8.9 8.4 106 8.9 7.2 124
BLACK BEAR 8170 14.6 12.0 122 16.2 12.6 129
CANYON 7870 5.7 4.1 139 7.2 5.7 126
FISHER CREEK 9100 12.2 11.6 105 13.1 12.0 109
MADISON PLATEAU 7750 9.0 7.8 115 11.1 9.0 123
NORTHEAST ENTRANCE 7350 3.4 3.3 103 5.7 4.8 119
PARKER PEAK 9400 9.9 7.9 125 10.6 6.4 166
SYLVAN LAKE 8420 7.7 7.7 100 10.3 8.4 123
THUMB DIVIDE 7980 7.4 5.1 145 8.4 6.5 129
TWO OCEAN PLATEAU 9240 14.2 9.9 143 11.4 9.9 115
WHISKEY CREEK 6800 5.6 4.9 114 8.3 7.1 117
WHITE MILL 8700 8.9 8.1 110 10.2 9.4 109
WOLVERINE 7650 4.7 3.9 121 5.4 5.3 102
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Basin wide percent of average 118 122
WIND RIVER
BURROUGHS CREEK 8750 -M 4.9 * 5.5 5.8 95
CASTLE CREEK 8400 2.3 -M * 3.1 -M *
COLD SPRINGS 9630 3.3 3.7 89 3.3 4.7 70
DEER PARK 9700 8.1 5.1 159 8.9 8.2 109
HOBBS PARK 10100 6.3 6.2 102 5.6 5.2 108
LITTLE WARM 9370 4.4 4.1 107 4.5 5.3 85
SOUTH PASS 9040 6.4 6.1 105 6.3 7.1 89
ST. LAWRENCE ALT 8620 2.1 3.1 68 2.9 3.9 74
TOGWOTEE PASS 9580 11.1 8.4 132 12.0 8.7 138
TOWNSEND CREEK 8700 3.6 3.4 106 5.4 5.0 108
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Basin wide percent of average 113 101
BIGHORN BASIN
BALD MTN. 9380 7.0 6.9 101 6.4 6.2 103
BEAR TRAP MEADOW 8200 1.7 2.0 85 3.0 3.8 79
BLACKWATER 9780 10.2 9.4 109 9.7 8.5 114
BONE SPRINGS DIV 9350 5.2 6.0 87 4.4 5.6 79
EVENING STAR 9200 10.8 10.4 104 12.5 9.6 130
GRAVE SPRINGS 8550 2.7 2.9 93 3.3 4.0 83
KIRWIN 9550 5.3 4.8 110 5.7 4.7 121
MARQUETTE 8760 1.3 4.2 31 2.3 4.5 51
MIDDLE POWDER 7760 4.0 4.0 100 2.8 5.5 51
OWL CREEK 8975 1.6 2.1 76 2.1 2.4 88
POWDER RIVER PASS 9480 4.0 3.9 103 4.8 4.7 102
SHELL CREEK 9580 5.0 5.6 89 4.4 5.2 85
SYLVAN LAKE 8420 7.7 7.7 100 10.3 8.4 123
SYLVAN ROAD 7120 4.5 4.4 102 7.2 7.9 91
TIMBER CREEK 7950 1.6 2.5 64 2.2 3.3 67
YOUNTS PEAK 8350 6.8 5.8 117 6.3 6.0 105
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Basin wide percent of average 96 97
SHOSHONE RIVER
BLACKWATER 9780 10.2 9.4 109 9.7 8.5 114
EVENING STAR 9200 10.8 10.4 104 12.5 9.6 130
KIRWIN 9550 5.3 4.8 110 5.7 4.7 121
MARQUETTE 8760 1.3 4.2 31 2.3 4.5 51
SYLVAN LAKE 8420 7.7 7.7 100 10.3 8.4 123
SYLVAN ROAD 7120 4.5 4.4 102 7.2 7.9 91
YOUNTS PEAK 8350 6.8 5.8 117 6.3 6.0 105
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Basin wide percent of average 100 109
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.7 2.0 85 3.0 3.8 79
BIG GOOSE 7990 1.6 2.9 55 3.3 3.5 94
BONE SPRINGS DIV 9350 5.2 6.0 87 4.4 5.6 79
BURGESS JUNCTION 7880 2.5 3.9 64 4.0 4.8 83
CLOUD PEAK RESERVOIR 9860 5.0 4.3 116 5.6 5.4 104
DOME LAKE 8880 2.1 4.7 45 4.2 5.5 76
GRAVE SPRINGS 8550 2.7 2.9 93 3.3 4.0 83
HANSEN SAWMILL 8360 1.5 2.4 63 2.1 3.5 60
LITTLE GOOSE 8870 2.1 -M * 5.7 -M *
MIDDLE POWDER 7760 4.0 4.0 100 2.8 5.5 51
POWDER RIVER PASS 9480 4.0 3.9 103 4.8 4.7 102
SOLDIER PARK 8720 1.2 -M * 2.8 -M *
SUCKER CREEK 8880 3.5 3.7 95 3.9 5.1 76
TIE CREEK 6870 1.6 1.3 123 3.2 4.1 78
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Basin wide percent of average 84 80
BELLE FOURCHE
BLIND PARK 6890 1.4 2.2 64 6.7 5.0 134
COLE CANYON 5910 2.2 2.4 92 4.2 3.3 127
NORTH RAPID CREEK 6130 2.0 2.1 95 5.8 4.2 138
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Basin wide percent of average 84 134
UPPER N. PLATTE RIVER
COLUMBINE 9160 9.5 6.3 151 13.0 7.9 165
DIVIDE PEAK 8880 6.8 6.2 110 10.4 7.3 142
ELK RIVER 8700 5.6 4.1 137 9.1 6.3 144
JOE WRIGHT 10120 10.8 7.2 150 15.4 9.0 171
NORTH FRENCH CREEK 10130 14.9 9.4 159 15.4 8.8 175
OLD BATTLE 10000 13.4 10.8 124 15.3 11.3 135
SAGE CREEK BASIN 7850 4.0 3.6 111 7.1 4.3 165
SOUTH BRUSH CREEK 8440 6.4 3.5 183 9.7 5.9 164
TOWER 10500 18.2 15.1 121 20.3 12.8 159
WEBBER SPRINGS 9250 8.6 8.1 106 12.8 9.3 138
WILLOW CREEK PASS 9540 6.6 4.2 157 7.6 5.0 152
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Basin wide percent of average 134 155
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 9.3 7.3 127 10.9 7.3 149
CASPER MTN. 7900 3.5 5.4 65 6.2 5.9 105
DEADMAN HILL 10220 5.4 5.8 93 10.2 6.1 167
DEER PARK 9700 8.1 5.1 159 8.9 8.2 109
LAPRELE CREEK 8375 3.2 3.8 84 4.7 4.8 98
RENO HILL 8400 4.6 5.0 92 6.5 5.7 114
ROACH 9700 6.7 5.2 129 9.3 6.2 150
SAND LAKE 10050 13.5 11.0 123 13.2 8.5 155
SOUTH PASS 9040 6.4 6.1 105 6.3 7.1 89
WINDY PEAK 7900 2.6 2.7 96 4.9 4.3 114
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Basin wide percent of average 110 127
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.2 2.3 139 5.7 5.2 110
DIVIDE PEAK 8880 6.8 6.2 110 10.4 7.3 142
OLD BATTLE 10000 13.4 10.8 124 15.3 11.3 135
SANDSTONE RS 8150 2.8 3.1 90 8.9 6.4 139
WHISKEY PARK 8950 5.4 7.5 72 13.3 9.4 141
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Basin wide percent of average 106 135
UPPER GREEN RIVER
BIG SANDY OPENING 9080 5.0 4.9 102 5.9 5.0 118
BLIND BULL SUM 8650 9.4 8.9 106 6.9 7.9 87
EAST RIM DIVIDE 7930 3.8 4.0 95 4.3 4.1 105
ELKHART PARK G.S. 9400 3.7 4.3 86 4.5 5.1 88
GROS VENTRE SUMMIT 8750 6.0 4.8 125 6.2 4.9 127
GUNSIGHT PASS 9820 6.3 -M * 6.7 -M *
KENDALL R.S. 7740 3.6 4.2 86 5.4 4.8 113
LOOMIS PARK 8240 5.9 5.5 107 6.8 5.9 115
NEW FORK LAKE 8340 3.8 3.6 106 3.9 4.4 89
POCKET CREEK 9360 4.3 -M * 5.4 -M *
SNIDER BASIN 8060 6.6 4.6 143 7.6 5.5 138
SPRING CREEK DIVIDE 9000 11.0 8.6 128 12.1 9.0 134
TRIPLE PEAK 8500 9.8 8.0 123 12.0 7.9 152
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Basin wide percent of average 112 117
LOWER GREEN RIVER
HAMS FORK 7840 4.3 3.3 130 5.8 4.2 138
HEWINTA 9519 2.4 2.6 92 6.3 5.6 113
HICKERSON PARK 9145 1.3 1.9 68 3.3 3.5 94
HOLE-IN-ROCK 9150 1.5 1.8 83 3.7 3.3 112
INDIAN CREEK 9425 11.1 8.4 132 11.0 8.5 129
KELLEY R.S. 8180 7.0 5.3 132 9.6 6.9 139
STEEL CREEK PARK 10200 4.3 4.8 90 7.4 5.9 125
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Basin wide percent of average 114 124
UPPER BEAR RIVER
BUG LAKE 7950 7.8 5.2 150 10.8 6.8 159
HAYDEN FORK 9212 5.0 3.9 128 11.4 7.3 156
KELLEY R.S. 8180 7.0 5.3 132 9.6 6.9 139
LILY LAKE 9156 5.5 3.6 153 8.6 6.6 130
MONTE CRISTO 8960 10.7 6.7 160 13.4 8.8 152
SALT RIVER SUMMIT 7760 5.0 3.4 147 8.6 6.1 141
TRIAL LAKE 9992 10.4 7.0 149 12.6 8.0 158
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Basin wide percent of average 146 149
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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.