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 3 , 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 5.8 4.4 132 8.3 6.4 130
COTTONWOOD CREEK 7670 8.8 5.0 176 12.7 8.3 153
GRAND TARGHEE 9260 16.4 -M * 12.2 -M *
GRANITE CREEK 6770 5.2 3.7 141 7.7 5.7 135
GRASSY LAKE 7265 8.6 8.1 106 12.0 10.1 119
GROS VENTRE SUMMIT 8750 5.3 4.1 129 5.6 4.4 127
GUNSIGHT PASS 9820 5.5 -M * 5.9 -M *
LEWIS LAKE DIVIDE 7850 9.9 8.2 121 12.4 10.4 119
PHILLIPS BENCH 8200 10.1 6.8 149 11.6 7.8 149
SALT RIVER SUMMIT 7760 4.3 2.8 154 7.6 5.2 146
SNAKE RIVER STATION 6920 4.9 4.3 114 9.2 6.8 135
SPRING CREEK DIVIDE 9000 9.0 7.2 125 10.2 7.7 132
THUMB DIVIDE 7980 6.6 4.3 153 7.6 5.7 133
TOGWOTEE PASS 9580 9.8 7.3 134 10.7 7.6 141
TWO OCEAN PLATEAU 9240 12.2 8.7 140 9.9 8.6 115
WILLOW CREEK 8380 9.0 8.1 111 14.1 9.8 144
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Basin wide percent of average 132 134
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 7.9 7.4 107 8.1 6.2 131
BLACK BEAR 8170 12.6 10.2 124 14.3 11.0 130
CANYON 7870 4.9 3.5 140 6.1 5.0 122
FISHER CREEK 9100 11.3 9.9 114 12.2 10.3 118
MADISON PLATEAU 7750 7.9 6.6 120 10.0 7.6 132
NORTHEAST ENTRANCE 7350 3.0 2.7 111 5.2 4.2 124
PARKER PEAK 9400 9.0 7.0 129 9.2 5.7 161
SYLVAN LAKE 8420 6.7 6.8 99 9.1 7.4 123
THUMB DIVIDE 7980 6.6 4.3 153 7.6 5.7 133
TWO OCEAN PLATEAU 9240 12.2 8.7 140 9.9 8.6 115
WHISKEY CREEK 6800 4.8 4.1 117 7.5 6.2 121
WHITE MILL 8700 7.9 7.0 113 9.2 8.1 114
WOLVERINE 7650 4.1 3.2 128 5.1 4.7 109
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Basin wide percent of average 121 125
WIND RIVER
BURROUGHS CREEK 8750 4.3 4.1 105 4.6 5.1 90
CASTLE CREEK 8400 1.9 -M * 2.7 -M *
COLD SPRINGS 9630 2.9 3.2 91 3.2 4.3 74
DEER PARK 9700 6.9 4.6 150 7.5 7.4 101
HOBBS PARK 10100 5.7 5.4 106 5.2 4.7 111
LITTLE WARM 9370 3.9 3.6 108 3.9 4.8 81
SOUTH PASS 9040 5.3 5.1 104 5.2 6.3 83
ST. LAWRENCE ALT 8620 2.1 2.7 78 2.8 3.6 78
TOGWOTEE PASS 9580 9.8 7.3 134 10.7 7.6 141
TOWNSEND CREEK 8700 3.4 3.0 113 5.2 4.6 113
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Basin wide percent of average 114 100
BIGHORN BASIN
BALD MTN. 9380 6.8 6.2 110 6.5 5.5 118
BEAR TRAP MEADOW 8200 1.5 1.7 88 3.1 3.5 89
BLACKWATER 9780 8.6 8.3 104 8.1 7.5 108
BONE SPRINGS DIV 9350 5.1 5.5 93 4.2 5.0 84
EVENING STAR 9200 9.2 9.0 102 10.7 8.5 126
GRAVE SPRINGS 8550 2.6 2.7 96 3.2 3.7 86
KIRWIN 9550 4.6 4.3 107 5.0 4.2 119
MARQUETTE 8760 1.1 3.8 29 2.5 4.2 60
MIDDLE POWDER 7760 3.7 3.7 100 2.9 5.0 58
OWL CREEK 8975 1.5 1.9 79 2.0 2.3 87
POWDER RIVER PASS 9480 3.8 3.5 109 4.9 4.2 117
SHELL CREEK 9580 4.8 5.3 91 4.4 4.6 96
SYLVAN LAKE 8420 6.7 6.8 99 9.1 7.4 123
SYLVAN ROAD 7120 3.8 3.8 100 6.4 6.9 93
TIMBER CREEK 7950 1.6 2.4 67 2.0 3.1 65
YOUNTS PEAK 8350 5.9 5.1 116 5.4 5.4 100
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Basin wide percent of average 96 99
SHOSHONE RIVER
BLACKWATER 9780 8.6 8.3 104 8.1 7.5 108
EVENING STAR 9200 9.2 9.0 102 10.7 8.5 126
KIRWIN 9550 4.6 4.3 107 5.0 4.2 119
MARQUETTE 8760 1.1 3.8 29 2.5 4.2 60
SYLVAN LAKE 8420 6.7 6.8 99 9.1 7.4 123
SYLVAN ROAD 7120 3.8 3.8 100 6.4 6.9 93
YOUNTS PEAK 8350 5.9 5.1 116 5.4 5.4 100
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Basin wide percent of average 97 107
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.5 1.7 88 3.1 3.5 89
BIG GOOSE 7990 1.6 2.5 64 3.3 3.1 106
BONE SPRINGS DIV 9350 5.1 5.5 93 4.2 5.0 84
BURGESS JUNCTION 7880 2.4 3.6 67 3.9 4.3 91
CLOUD PEAK RESERVOIR 9860 4.4 3.9 113 5.3 5.0 106
DOME LAKE 8880 2.0 4.3 47 4.1 5.0 82
GRAVE SPRINGS 8550 2.6 2.7 96 3.2 3.7 86
HANSEN SAWMILL 8360 1.5 2.1 71 2.0 3.3 61
LITTLE GOOSE 8870 2.0 -M * 5.5 -M *
MIDDLE POWDER 7760 3.7 3.7 100 2.9 5.0 58
POWDER RIVER PASS 9480 3.8 3.5 109 4.9 4.2 117
SOLDIER PARK 8720 1.2 -M * 2.6 -M *
SUCKER CREEK 8880 3.4 3.4 100 3.9 4.6 85
TIE CREEK 6870 1.5 1.2 125 3.1 3.8 82
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Basin wide percent of average 88 87
BELLE FOURCHE
BLIND PARK 6890 1.6 2.0 80 6.8 4.6 148
COLE CANYON 5910 2.4 2.2 109 4.1 3.1 132
NORTH RAPID CREEK 6130 2.1 1.8 117 5.9 3.9 151
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Basin wide percent of average 102 145
UPPER N. PLATTE RIVER
COLUMBINE 9160 8.8 5.3 166 12.1 6.7 181
DIVIDE PEAK 8880 5.0 5.3 94 8.5 6.4 133
ELK RIVER 8700 5.0 3.3 152 8.4 5.4 156
JOE WRIGHT 10120 9.6 6.5 148 14.2 8.0 178
NORTH FRENCH CREEK 10130 11.9 8.2 145 12.7 7.8 163
OLD BATTLE 10000 10.8 9.5 114 12.9 9.7 133
SAGE CREEK BASIN 7850 2.9 3.1 94 6.0 3.7 162
SOUTH BRUSH CREEK 8440 5.2 3.0 173 8.4 5.4 156
TOWER 10500 16.1 13.2 122 18.8 11.1 169
WEBBER SPRINGS 9250 6.9 7.0 99 11.0 8.1 136
WILLOW CREEK PASS 9540 6.2 3.7 168 7.2 4.5 160
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Basin wide percent of average 130 157
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 7.1 6.3 113 8.9 6.5 137
CASPER MTN. 7900 3.1 4.8 65 5.8 5.4 107
DEADMAN HILL 10220 5.6 5.2 108 9.6 5.4 178
DEER PARK 9700 6.9 4.6 150 7.5 7.4 101
LAPRELE CREEK 8375 2.8 3.3 85 4.4 4.4 100
RENO HILL 8400 4.4 4.4 100 6.3 5.2 121
ROACH 9700 6.2 4.5 138 8.8 5.4 163
SAND LAKE 10050 11.6 9.6 121 11.4 7.5 152
SOUTH PASS 9040 5.3 5.1 104 5.2 6.3 83
WINDY PEAK 7900 2.3 2.4 96 4.6 3.9 118
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Basin wide percent of average 110 126
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.7 1.9 142 5.4 4.6 117
DIVIDE PEAK 8880 5.0 5.3 94 8.5 6.4 133
OLD BATTLE 10000 10.8 9.5 114 12.9 9.7 133
SANDSTONE RS 8150 2.0 2.5 80 7.7 5.7 135
WHISKEY PARK 8950 5.0 6.4 78 11.4 8.2 139
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Basin wide percent of average 100 133
UPPER GREEN RIVER
BIG SANDY OPENING 9080 4.3 4.2 102 5.2 4.4 118
BLIND BULL SUM 8650 8.0 7.5 107 5.6 6.8 82
EAST RIM DIVIDE 7930 3.3 3.4 97 3.8 3.6 106
ELKHART PARK G.S. 9400 3.1 3.7 84 3.9 4.6 85
GROS VENTRE SUMMIT 8750 5.3 4.1 129 5.6 4.4 127
GUNSIGHT PASS 9820 5.5 -M * 5.9 -M *
KENDALL R.S. 7740 2.8 3.4 82 4.7 4.2 112
LOOMIS PARK 8240 5.0 4.6 109 6.0 5.2 115
NEW FORK LAKE 8340 3.3 3.0 110 3.5 4.0 88
POCKET CREEK 9360 3.5 -M * 4.7 -M *
SNIDER BASIN 8060 5.4 3.9 138 6.6 4.7 140
SPRING CREEK DIVIDE 9000 9.0 7.2 125 10.2 7.7 132
TRIPLE PEAK 8500 7.9 6.7 118 10.2 6.8 150
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Basin wide percent of average 111 116
LOWER GREEN RIVER
HAMS FORK 7840 3.4 2.7 126 5.3 3.7 143
HEWINTA 9519 1.4 2.3 61 5.8 5.1 114
HICKERSON PARK 9145 1.2 1.6 75 3.4 3.3 103
HOLE-IN-ROCK 9150 1.8 1.6 113 3.6 3.0 120
INDIAN CREEK 9425 9.0 7.0 129 9.3 7.3 127
KELLEY R.S. 8180 5.7 4.4 130 8.3 6.0 138
STEEL CREEK PARK 10200 3.7 4.2 88 6.9 5.3 130
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Basin wide percent of average 110 126
UPPER BEAR RIVER
BUG LAKE 7950 6.3 4.3 147 9.4 6.0 157
HAYDEN FORK 9212 4.3 3.2 134 10.4 6.4 163
KELLEY R.S. 8180 5.7 4.4 130 8.3 6.0 138
LILY LAKE 9156 4.4 3.1 142 8.0 5.9 136
MONTE CRISTO 8960 9.2 5.5 167 12.1 7.6 159
SALT RIVER SUMMIT 7760 4.3 2.8 154 7.6 5.2 146
TRIAL LAKE 9992 9.4 5.9 159 11.6 7.0 166
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Basin wide percent of average 149 153
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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.