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 SUNDAY: DECEMBER 5 , 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 6.5 4.6 141 9.1 6.7 136
COTTONWOOD CREEK 7670 9.6 5.3 181 13.5 8.7 155
GRAND TARGHEE 9260 17.5 -M * 13.1 -M *
GRANITE CREEK 6770 5.8 4.0 145 8.3 5.9 141
GRASSY LAKE 7265 9.8 8.6 114 13.0 10.6 123
GROS VENTRE SUMMIT 8750 5.5 4.3 128 5.8 4.6 126
GUNSIGHT PASS 9820 5.7 -M * 6.1 -M *
LEWIS LAKE DIVIDE 7850 11.0 8.6 128 13.5 10.9 124
PHILLIPS BENCH 8200 10.6 7.2 147 12.1 8.2 148
SALT RIVER SUMMIT 7760 4.8 3.0 160 8.2 5.5 149
SNAKE RIVER STATION 6920 5.5 4.6 120 10.1 7.1 142
SPRING CREEK DIVIDE 9000 10.2 7.6 134 11.4 8.0 143
THUMB DIVIDE 7980 6.9 4.5 153 7.9 5.9 134
TOGWOTEE PASS 9580 10.3 7.6 136 11.2 7.9 142
TWO OCEAN PLATEAU 9240 13.3 9.0 148 10.8 9.0 120
WILLOW CREEK 8380 10.0 8.5 118 15.0 10.2 147
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Basin wide percent of average 137 137
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 8.4 7.7 109 8.4 6.5 129
BLACK BEAR 8170 13.2 10.8 122 15.1 11.4 132
CANYON 7870 5.4 3.7 146 6.7 5.2 129
FISHER CREEK 9100 11.7 10.4 113 12.7 10.8 118
MADISON PLATEAU 7750 8.2 7.0 117 10.4 8.0 130
NORTHEAST ENTRANCE 7350 3.2 2.9 110 5.4 4.4 123
PARKER PEAK 9400 9.4 7.3 129 9.0 5.9 153
SYLVAN LAKE 8420 7.0 7.1 99 9.6 7.7 125
THUMB DIVIDE 7980 6.9 4.5 153 7.9 5.9 134
TWO OCEAN PLATEAU 9240 13.3 9.0 148 10.8 9.0 120
WHISKEY CREEK 6800 5.0 4.4 114 7.9 6.4 123
WHITE MILL 8700 8.5 7.3 116 9.5 8.5 112
WOLVERINE 7650 4.5 3.4 132 5.2 4.9 106
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Basin wide percent of average 122 125
WIND RIVER
BURROUGHS CREEK 8750 -M 4.5 * 5.3 5.3 100
CASTLE CREEK 8400 2.1 -M * 2.8 -M *
COLD SPRINGS 9630 3.1 3.3 94 3.3 4.4 75
DEER PARK 9700 8.0 4.7 170 8.7 7.6 114
HOBBS PARK 10100 6.2 5.7 109 5.5 4.9 112
LITTLE WARM 9370 4.1 3.8 108 4.2 4.9 86
SOUTH PASS 9040 6.3 5.5 115 6.2 6.5 95
ST. LAWRENCE ALT 8620 2.0 2.8 71 2.9 3.7 78
TOGWOTEE PASS 9580 10.3 7.6 136 11.2 7.9 142
TOWNSEND CREEK 8700 3.5 3.1 113 5.3 4.7 113
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Basin wide percent of average 119 105
BIGHORN BASIN
BALD MTN. 9380 6.9 6.4 108 6.2 5.7 109
BEAR TRAP MEADOW 8200 1.6 1.8 89 2.7 3.6 75
BLACKWATER 9780 9.2 8.6 107 8.6 7.8 110
BONE SPRINGS DIV 9350 5.1 5.6 91 4.2 5.2 81
EVENING STAR 9200 9.7 9.4 103 11.1 8.8 126
GRAVE SPRINGS 8550 2.7 2.8 96 3.3 3.8 87
KIRWIN 9550 4.9 4.5 109 5.2 4.4 118
MARQUETTE 8760 1.1 3.9 28 2.4 4.3 56
MIDDLE POWDER 7760 3.9 3.8 103 2.7 5.2 52
OWL CREEK 8975 1.5 2.0 75 1.9 2.3 83
POWDER RIVER PASS 9480 4.1 3.7 111 4.8 4.4 109
SHELL CREEK 9580 5.0 5.4 93 4.4 4.8 92
SYLVAN LAKE 8420 7.0 7.1 99 9.6 7.7 125
SYLVAN ROAD 7120 4.1 4.0 103 6.7 7.2 93
TIMBER CREEK 7950 1.5 2.4 63 2.1 3.1 68
YOUNTS PEAK 8350 6.3 5.3 119 5.9 5.6 105
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Basin wide percent of average 97 97
SHOSHONE RIVER
BLACKWATER 9780 9.2 8.6 107 8.6 7.8 110
EVENING STAR 9200 9.7 9.4 103 11.1 8.8 126
KIRWIN 9550 4.9 4.5 109 5.2 4.4 118
MARQUETTE 8760 1.1 3.9 28 2.4 4.3 56
SYLVAN LAKE 8420 7.0 7.1 99 9.6 7.7 125
SYLVAN ROAD 7120 4.1 4.0 103 6.7 7.2 93
YOUNTS PEAK 8350 6.3 5.3 119 5.9 5.6 105
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Basin wide percent of average 99 108
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.6 1.8 89 2.7 3.6 75
BIG GOOSE 7990 1.4 2.6 54 3.0 3.2 94
BONE SPRINGS DIV 9350 5.1 5.6 91 4.2 5.2 81
BURGESS JUNCTION 7880 2.4 3.7 65 3.8 4.5 84
CLOUD PEAK RESERVOIR 9860 4.7 4.0 118 4.9 5.1 96
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 1.2 2.2 55 1.9 3.4 56
LITTLE GOOSE 8870 2.1 -M * 5.5 -M *
MIDDLE POWDER 7760 3.9 3.8 103 2.7 5.2 52
POWDER RIVER PASS 9480 4.1 3.7 111 4.8 4.4 109
SOLDIER PARK 8720 .9 -M * 2.5 -M *
SUCKER CREEK 8880 3.4 3.5 97 3.7 4.8 77
TIE CREEK 6870 1.3 1.3 100 2.9 3.9 74
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Basin wide percent of average 85 80
BELLE FOURCHE
BLIND PARK 6890 1.4 2.1 67 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 5.6 4.0 140
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Basin wide percent of average 89 140
UPPER N. PLATTE RIVER
COLUMBINE 9160 8.9 5.6 159 12.3 7.0 176
DIVIDE PEAK 8880 6.3 5.6 113 9.8 6.7 146
ELK RIVER 8700 -M 3.5 * -M 5.7 *
JOE WRIGHT 10120 9.9 6.7 148 14.5 8.3 175
NORTH FRENCH CREEK 10130 14.0 8.6 163 14.7 8.1 181
OLD BATTLE 10000 12.3 9.9 124 14.4 10.2 141
SAGE CREEK BASIN 7850 3.6 3.2 113 6.7 3.9 172
SOUTH BRUSH CREEK 8440 5.9 3.2 184 9.2 5.5 167
TOWER 10500 16.7 13.7 122 19.2 11.6 166
WEBBER SPRINGS 9250 8.1 7.3 111 12.3 8.5 145
WILLOW CREEK PASS 9540 6.0 3.9 154 7.3 4.7 155
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Basin wide percent of average 135 162
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 8.9 6.6 135 10.4 6.7 155
CASPER MTN. 7900 3.1 5.0 62 5.9 5.6 105
DEADMAN HILL 10220 5.5 5.4 102 9.9 5.6 177
DEER PARK 9700 8.0 4.7 170 8.7 7.6 114
LAPRELE CREEK 8375 2.9 3.5 83 4.5 4.5 100
RENO HILL 8400 4.4 4.6 96 6.3 5.4 117
ROACH 9700 6.5 4.7 138 9.1 5.7 160
SAND LAKE 10050 12.9 10.0 129 12.7 7.8 163
SOUTH PASS 9040 6.3 5.5 115 6.2 6.5 95
WINDY PEAK 7900 2.3 2.5 92 4.7 4.0 118
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Basin wide percent of average 116 132
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.8 2.1 133 5.5 4.7 117
DIVIDE PEAK 8880 6.3 5.6 113 9.8 6.7 146
OLD BATTLE 10000 12.3 9.9 124 14.4 10.2 141
SANDSTONE RS 8150 2.5 2.7 93 8.2 5.9 139
WHISKEY PARK 8950 5.6 6.7 84 12.2 8.6 142
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Basin wide percent of average 109 139
UPPER GREEN RIVER
BIG SANDY OPENING 9080 4.7 4.4 107 5.5 4.6 120
BLIND BULL SUM 8650 8.7 7.9 110 6.4 7.1 90
EAST RIM DIVIDE 7930 3.4 3.6 94 3.9 3.8 103
ELKHART PARK G.S. 9400 3.3 3.9 85 4.1 4.7 87
GROS VENTRE SUMMIT 8750 5.5 4.3 128 5.8 4.6 126
GUNSIGHT PASS 9820 5.7 -M * 6.1 -M *
KENDALL R.S. 7740 3.1 3.7 84 4.9 4.4 111
LOOMIS PARK 8240 5.4 4.9 110 6.3 5.4 117
NEW FORK LAKE 8340 3.4 3.1 110 3.6 4.1 88
POCKET CREEK 9360 3.8 -M * 4.9 -M *
SNIDER BASIN 8060 6.1 4.1 149 7.2 4.9 147
SPRING CREEK DIVIDE 9000 10.2 7.6 134 11.4 8.0 143
TRIPLE PEAK 8500 8.9 7.1 125 11.1 7.1 156
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Basin wide percent of average 115 120
LOWER GREEN RIVER
HAMS FORK 7840 4.1 2.9 141 5.4 3.8 142
HEWINTA 9519 1.7 2.4 71 5.8 5.2 112
HICKERSON PARK 9145 1.3 1.7 76 3.4 3.4 100
HOLE-IN-ROCK 9150 1.5 1.6 94 3.7 3.1 119
INDIAN CREEK 9425 10.4 7.4 141 10.3 7.6 136
KELLEY R.S. 8180 6.6 4.7 140 9.2 6.2 148
STEEL CREEK PARK 10200 3.8 4.3 88 7.0 5.5 127
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Basin wide percent of average 118 129
UPPER BEAR RIVER
BUG LAKE 7950 7.1 4.5 158 10.1 6.2 163
HAYDEN FORK 9212 4.4 3.4 129 10.6 6.7 158
KELLEY R.S. 8180 6.6 4.7 140 9.2 6.2 148
LILY LAKE 9156 4.6 3.2 144 8.1 6.1 133
MONTE CRISTO 8960 9.9 5.9 168 12.5 7.9 158
SALT RIVER SUMMIT 7760 4.8 3.0 160 8.2 5.5 149
TRIAL LAKE 9992 9.8 6.2 158 12.0 7.3 164
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Basin wide percent of average 153 154
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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.