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 THURSDAY: DECEMBER 2 , 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 5.1 4.2 121 7.7 6.2 124
COTTONWOOD CREEK 7670 8.7 4.8 181 12.6 8.2 154
GRAND TARGHEE 9260 15.9 -M * 12.1 -M *
GRANITE CREEK 6770 4.4 3.6 122 6.9 5.5 125
GRASSY LAKE 7265 7.8 7.9 99 11.2 9.9 113
GROS VENTRE SUMMIT 8750 5.0 4.0 125 5.4 4.3 126
GUNSIGHT PASS 9820 5.2 -M * 5.7 -M *
LEWIS LAKE DIVIDE 7850 8.5 7.9 108 11.3 10.1 112
PHILLIPS BENCH 8200 9.5 6.6 144 11.1 7.6 146
SALT RIVER SUMMIT 7760 4.2 2.7 156 7.5 5.1 147
SNAKE RIVER STATION 6920 4.2 4.2 100 8.5 6.6 129
SPRING CREEK DIVIDE 9000 8.7 7.0 124 9.9 7.5 132
THUMB DIVIDE 7980 6.0 4.1 146 7.1 5.5 129
TOGWOTEE PASS 9580 9.2 7.2 128 10.2 7.4 138
TWO OCEAN PLATEAU 9240 11.0 8.5 129 9.1 8.4 108
WILLOW CREEK 8380 8.8 7.9 111 13.9 9.6 145
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Basin wide percent of average 125 130
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 7.0 7.2 97 7.2 6.0 120
BLACK BEAR 8170 11.6 9.9 117 13.5 10.7 126
CANYON 7870 4.3 3.4 126 5.8 4.9 118
FISHER CREEK 9100 9.8 9.6 102 10.8 10.1 107
MADISON PLATEAU 7750 7.4 6.4 116 9.5 7.4 128
NORTHEAST ENTRANCE 7350 2.8 2.6 108 5.0 4.1 122
PARKER PEAK 9400 8.1 6.9 117 8.9 5.6 159
SYLVAN LAKE 8420 6.1 6.7 91 8.5 7.2 118
THUMB DIVIDE 7980 6.0 4.1 146 7.1 5.5 129
TWO OCEAN PLATEAU 9240 11.0 8.5 129 9.1 8.4 108
WHISKEY CREEK 6800 4.5 4.0 113 7.3 6.0 122
WHITE MILL 8700 7.0 6.8 103 8.2 7.9 104
WOLVERINE 7650 3.8 3.0 127 4.7 4.6 102
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Basin wide percent of average 113 119
WIND RIVER
BURROUGHS CREEK 8750 3.5 3.9 90 4.1 5.0 82
CASTLE CREEK 8400 1.7 -M * 2.4 -M *
COLD SPRINGS 9630 2.9 3.2 91 3.1 4.3 72
DEER PARK 9700 6.6 4.6 143 7.4 7.2 103
HOBBS PARK 10100 5.4 5.3 102 5.1 4.7 109
LITTLE WARM 9370 3.8 3.5 109 3.7 4.7 79
SOUTH PASS 9040 5.1 5.0 102 5.1 6.1 84
ST. LAWRENCE ALT 8620 2.0 2.7 74 2.7 3.6 75
TOGWOTEE PASS 9580 9.2 7.2 128 10.2 7.4 138
TOWNSEND CREEK 8700 3.3 3.0 110 5.2 4.6 113
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Basin wide percent of average 109 98
BIGHORN BASIN
BALD MTN. 9380 6.8 6.1 111 6.3 5.4 117
BEAR TRAP MEADOW 8200 1.4 1.7 82 2.9 3.4 85
BLACKWATER 9780 7.9 8.0 99 7.6 7.4 103
BONE SPRINGS DIV 9350 5.0 5.4 93 4.1 5.0 82
EVENING STAR 9200 8.0 8.8 91 9.6 8.4 114
GRAVE SPRINGS 8550 2.6 2.7 96 3.2 3.6 89
KIRWIN 9550 3.9 4.2 93 4.3 4.2 102
MARQUETTE 8760 1.1 3.8 29 2.5 4.1 61
MIDDLE POWDER 7760 3.6 3.6 100 2.9 5.0 58
OWL CREEK 8975 1.4 1.9 74 1.9 2.2 86
POWDER RIVER PASS 9480 3.8 3.4 112 4.7 4.2 112
SHELL CREEK 9580 4.8 5.2 92 4.4 4.6 96
SYLVAN LAKE 8420 6.1 6.7 91 8.5 7.2 118
SYLVAN ROAD 7120 3.4 3.7 92 6.0 6.7 90
TIMBER CREEK 7950 1.5 2.4 63 2.0 3.0 67
YOUNTS PEAK 8350 5.2 4.8 108 4.8 5.3 91
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Basin wide percent of average 92 95
SHOSHONE RIVER
BLACKWATER 9780 7.9 8.0 99 7.6 7.4 103
EVENING STAR 9200 8.0 8.8 91 9.6 8.4 114
KIRWIN 9550 3.9 4.2 93 4.3 4.2 102
MARQUETTE 8760 1.1 3.8 29 2.5 4.1 61
SYLVAN LAKE 8420 6.1 6.7 91 8.5 7.2 118
SYLVAN ROAD 7120 3.4 3.7 92 6.0 6.7 90
YOUNTS PEAK 8350 5.2 4.8 108 4.8 5.3 91
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Basin wide percent of average 89 100
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.4 1.7 82 2.9 3.4 85
BIG GOOSE 7990 1.4 2.4 58 3.1 3.1 100
BONE SPRINGS DIV 9350 5.0 5.4 93 4.1 5.0 82
BURGESS JUNCTION 7880 2.3 3.5 66 3.8 4.3 88
CLOUD PEAK RESERVOIR 9860 4.4 3.9 113 5.2 5.0 104
DOME LAKE 8880 1.9 4.2 45 4.0 5.0 80
GRAVE SPRINGS 8550 2.6 2.7 96 3.2 3.6 89
HANSEN SAWMILL 8360 1.3 2.1 62 1.9 3.2 59
LITTLE GOOSE 8870 1.9 -M * 5.4 -M *
MIDDLE POWDER 7760 3.6 3.6 100 2.9 5.0 58
POWDER RIVER PASS 9480 3.8 3.4 112 4.7 4.2 112
SOLDIER PARK 8720 1.1 -M * 2.6 -M *
SUCKER CREEK 8880 3.3 3.3 100 3.8 4.6 83
TIE CREEK 6870 1.5 1.2 125 3.0 3.7 81
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Basin wide percent of average 87 85
BELLE FOURCHE
BLIND PARK 6890 1.4 2.0 70 6.7 4.6 146
COLE CANYON 5910 2.3 2.2 105 4.1 3.0 137
NORTH RAPID CREEK 6130 2.0 1.8 111 5.8 3.8 153
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Basin wide percent of average 95 146
UPPER N. PLATTE RIVER
COLUMBINE 9160 8.8 5.1 173 12.1 6.5 186
DIVIDE PEAK 8880 5.0 5.2 96 8.5 6.3 135
ELK RIVER 8700 5.0 3.2 156 8.4 5.3 158
JOE WRIGHT 10120 9.6 6.4 150 14.2 7.9 180
NORTH FRENCH CREEK 10130 11.9 8.0 149 12.7 7.6 167
OLD BATTLE 10000 10.8 9.3 116 12.8 9.5 135
SAGE CREEK BASIN 7850 2.9 3.0 97 6.0 3.7 162
SOUTH BRUSH CREEK 8440 5.1 2.9 176 8.3 5.3 157
TOWER 10500 16.1 12.9 125 18.6 10.9 171
WEBBER SPRINGS 9250 6.9 6.8 101 11.0 7.9 139
WILLOW CREEK PASS 9540 6.3 3.7 170 7.2 4.4 164
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Basin wide percent of average 133 159
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 7.1 6.1 116 8.8 6.4 138
CASPER MTN. 7900 3.0 4.7 64 5.8 5.3 109
DEADMAN HILL 10220 5.6 5.1 110 9.6 5.4 178
DEER PARK 9700 6.6 4.6 143 7.4 7.2 103
LAPRELE CREEK 8375 2.7 3.3 82 4.3 4.3 100
RENO HILL 8400 4.2 4.3 98 6.2 5.2 119
ROACH 9700 6.2 4.4 141 8.8 5.3 166
SAND LAKE 10050 11.6 9.4 123 11.3 7.3 155
SOUTH PASS 9040 5.1 5.0 102 5.1 6.1 84
WINDY PEAK 7900 2.2 2.3 96 4.6 3.8 121
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Basin wide percent of average 110 128
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.8 1.9 147 5.4 4.5 120
DIVIDE PEAK 8880 5.0 5.2 96 8.5 6.3 135
OLD BATTLE 10000 10.8 9.3 116 12.8 9.5 135
SANDSTONE RS 8150 2.1 2.4 88 7.7 5.6 138
WHISKEY PARK 8950 4.9 6.3 78 11.4 8.0 143
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Basin wide percent of average 102 135
UPPER GREEN RIVER
BIG SANDY OPENING 9080 4.2 4.1 102 5.1 4.4 116
BLIND BULL SUM 8650 7.6 7.3 104 5.4 6.6 82
EAST RIM DIVIDE 7930 3.1 3.3 94 3.6 3.6 100
ELKHART PARK G.S. 9400 3.0 3.6 83 3.8 4.5 84
GROS VENTRE SUMMIT 8750 5.0 4.0 125 5.4 4.3 126
GUNSIGHT PASS 9820 5.2 -M * 5.7 -M *
KENDALL R.S. 7740 2.6 3.3 79 4.4 4.2 105
LOOMIS PARK 8240 4.7 4.5 104 5.7 5.0 114
NEW FORK LAKE 8340 3.2 2.9 110 3.4 3.9 87
POCKET CREEK 9360 3.5 -M * 4.7 -M *
SNIDER BASIN 8060 5.3 3.7 143 6.4 4.6 139
SPRING CREEK DIVIDE 9000 8.7 7.0 124 9.9 7.5 132
TRIPLE PEAK 8500 7.6 6.5 117 9.9 6.7 148
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Basin wide percent of average 110 114
LOWER GREEN RIVER
HAMS FORK 7840 3.4 2.6 131 5.3 3.6 147
HEWINTA 9519 1.3 2.2 59 5.7 5.0 114
HICKERSON PARK 9145 1.0 1.5 67 3.1 3.3 94
HOLE-IN-ROCK 9150 1.7 1.5 113 3.6 3.0 120
INDIAN CREEK 9425 8.8 6.9 128 9.1 7.1 128
KELLEY R.S. 8180 5.7 4.3 133 8.2 5.8 141
STEEL CREEK PARK 10200 3.6 4.1 88 6.9 5.2 133
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Basin wide percent of average 110 127
UPPER BEAR RIVER
BUG LAKE 7950 6.3 4.2 150 9.3 5.8 160
HAYDEN FORK 9212 4.3 3.2 134 10.4 6.3 165
KELLEY R.S. 8180 5.7 4.3 133 8.2 5.8 141
LILY LAKE 9156 4.3 3.0 143 8.0 5.8 138
MONTE CRISTO 8960 9.1 5.4 169 12.0 7.4 162
SALT RIVER SUMMIT 7760 4.2 2.7 156 7.5 5.1 147
TRIAL LAKE 9992 9.3 5.8 160 11.5 6.9 167
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Basin wide percent of average 151 155
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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.