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 SATURDAY: NOVEMBER 27 , 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 4.4 3.5 126 7.4 5.5 135
COTTONWOOD CREEK 7670 7.9 4.0 198 11.7 7.3 160
GRAND TARGHEE 9260 14.4 -M * 10.7 -M *
GRANITE CREEK 6770 3.8 2.9 131 6.4 4.8 133
GRASSY LAKE 7265 7.0 6.7 104 10.2 8.7 117
GROS VENTRE SUMMIT 8750 4.3 3.5 123 4.5 3.9 115
GUNSIGHT PASS 9820 4.5 -M * 5.0 -M *
LEWIS LAKE DIVIDE 7850 7.6 6.7 113 10.2 8.9 115
PHILLIPS BENCH 8200 8.9 5.6 159 10.3 6.7 154
SALT RIVER SUMMIT 7760 3.7 2.2 168 6.9 4.5 153
SNAKE RIVER STATION 6920 3.6 3.5 103 7.9 5.8 136
SPRING CREEK DIVIDE 9000 8.1 6.0 135 9.3 6.6 141
THUMB DIVIDE 7980 5.6 3.5 160 6.6 4.9 135
TOGWOTEE PASS 9580 8.4 6.4 131 9.3 6.7 139
TWO OCEAN PLATEAU 9240 10.4 7.6 137 8.5 7.5 113
WILLOW CREEK 8380 7.9 6.8 116 12.8 8.5 151
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Basin wide percent of average 133 135
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 6.7 6.4 105 6.8 5.3 128
BLACK BEAR 8170 10.9 8.7 125 12.7 9.5 134
CANYON 7870 4.0 2.9 138 5.6 4.4 127
FISHER CREEK 9100 9.4 8.2 115 10.4 8.8 118
MADISON PLATEAU 7750 6.9 5.4 128 8.9 6.5 137
NORTHEAST ENTRANCE 7350 2.6 2.1 124 4.9 3.7 132
PARKER PEAK 9400 7.3 6.1 120 7.6 5.0 152
SYLVAN LAKE 8420 5.5 5.9 93 8.0 6.4 125
THUMB DIVIDE 7980 5.6 3.5 160 6.6 4.9 135
TWO OCEAN PLATEAU 9240 10.4 7.6 137 8.5 7.5 113
WHISKEY CREEK 6800 4.1 3.4 121 7.0 5.4 130
WHITE MILL 8700 6.6 5.9 112 7.9 6.9 114
WOLVERINE 7650 3.5 2.6 135 4.4 4.1 107
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Basin wide percent of average 122 127
WIND RIVER
BURROUGHS CREEK 8750 -M 3.4 * 3.8 4.4 86
CASTLE CREEK 8400 1.4 -M * 2.2 -M *
COLD SPRINGS 9630 2.1 2.9 72 2.5 3.9 64
DEER PARK 9700 -M 4.3 * 6.5 6.6 98
HOBBS PARK 10100 4.4 4.9 90 4.2 4.3 98
LITTLE WARM 9370 3.3 3.1 106 3.3 4.2 79
SOUTH PASS 9040 4.2 4.7 89 4.2 5.5 76
ST. LAWRENCE ALT 8620 1.2 2.4 50 2.0 3.3 61
TOGWOTEE PASS 9580 8.4 6.4 131 9.3 6.7 139
TOWNSEND CREEK 8700 2.2 2.7 81 4.1 4.2 98
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Basin wide percent of average 95 93
BIGHORN BASIN
BALD MTN. 9380 6.4 5.5 116 6.0 4.9 122
BEAR TRAP MEADOW 8200 1.2 1.5 80 2.8 3.2 88
BLACKWATER 9780 7.0 7.2 97 6.7 6.5 103
BONE SPRINGS DIV 9350 4.7 5.0 94 3.9 4.6 85
EVENING STAR 9200 7.4 7.6 97 8.9 7.5 119
GRAVE SPRINGS 8550 2.4 2.6 92 3.0 3.4 88
KIRWIN 9550 3.5 3.9 90 3.8 3.8 100
MARQUETTE 8760 .6 3.5 17 2.1 3.9 54
MIDDLE POWDER 7760 3.4 3.3 103 2.7 4.7 57
OWL CREEK 8975 1.0 1.8 56 1.7 2.1 81
POWDER RIVER PASS 9480 3.6 3.0 120 4.6 3.8 121
SHELL CREEK 9580 4.4 4.8 92 4.2 4.2 100
SYLVAN LAKE 8420 5.5 5.9 93 8.0 6.4 125
SYLVAN ROAD 7120 3.1 3.2 97 5.6 6.0 93
TIMBER CREEK 7950 .9 2.2 41 1.3 2.9 45
YOUNTS PEAK 8350 4.8 4.4 109 4.4 4.7 94
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Basin wide percent of average 92 96
SHOSHONE RIVER
BLACKWATER 9780 7.0 7.2 97 6.7 6.5 103
EVENING STAR 9200 7.4 7.6 97 8.9 7.5 119
KIRWIN 9550 3.5 3.9 90 3.8 3.8 100
MARQUETTE 8760 .6 3.5 17 2.1 3.9 54
SYLVAN LAKE 8420 5.5 5.9 93 8.0 6.4 125
SYLVAN ROAD 7120 3.1 3.2 97 5.6 6.0 93
YOUNTS PEAK 8350 4.8 4.4 109 4.4 4.7 94
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Basin wide percent of average 89 102
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.2 1.5 80 2.8 3.2 88
BIG GOOSE 7990 1.0 2.1 48 2.8 2.9 97
BONE SPRINGS DIV 9350 4.7 5.0 94 3.9 4.6 85
BURGESS JUNCTION 7880 1.8 3.3 55 3.3 4.0 83
CLOUD PEAK RESERVOIR 9860 4.1 3.5 117 4.7 4.6 102
DOME LAKE 8880 1.6 3.9 41 3.7 4.6 80
GRAVE SPRINGS 8550 2.4 2.6 92 3.0 3.4 88
HANSEN SAWMILL 8360 1.2 1.9 63 1.7 3.1 55
LITTLE GOOSE 8870 1.2 -M * 4.6 -M *
MIDDLE POWDER 7760 3.4 3.3 103 2.7 4.7 57
POWDER RIVER PASS 9480 3.6 3.0 120 4.6 3.8 121
SOLDIER PARK 8720 1.1 -M * 2.4 -M *
SUCKER CREEK 8880 2.8 3.0 93 3.5 4.3 81
TIE CREEK 6870 1.2 1.1 109 2.7 3.6 75
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Basin wide percent of average 85 84
BELLE FOURCHE
BLIND PARK 6890 1.1 1.8 61 6.4 4.3 149
COLE CANYON 5910 1.7 1.9 89 3.6 2.9 124
NORTH RAPID CREEK 6130 1.3 1.5 87 5.2 3.7 141
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Basin wide percent of average 79 139
UPPER N. PLATTE RIVER
COLUMBINE 9160 7.6 4.4 173 10.8 5.8 186
DIVIDE PEAK 8880 4.2 4.6 91 7.5 5.7 132
ELK RIVER 8700 4.3 2.7 159 7.6 4.8 158
JOE WRIGHT 10120 8.9 5.9 151 13.3 7.2 185
NORTH FRENCH CREEK 10130 10.6 7.2 147 11.4 6.9 165
OLD BATTLE 10000 9.8 8.2 120 11.7 8.4 139
SAGE CREEK BASIN 7850 2.4 2.7 89 5.7 3.3 173
SOUTH BRUSH CREEK 8440 4.4 2.6 169 7.4 4.9 151
TOWER 10500 15.0 11.4 132 17.3 9.7 178
WEBBER SPRINGS 9250 6.1 6.0 102 10.2 7.1 144
WILLOW CREEK PASS 9540 5.8 3.3 176 6.8 4.1 166
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Basin wide percent of average 134 162
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 6.2 5.4 115 8.2 5.7 144
CASPER MTN. 7900 2.3 4.2 55 5.3 4.9 108
DEADMAN HILL 10220 4.4 4.7 94 8.6 4.9 176
DEER PARK 9700 -M 4.3 * 6.5 6.6 98
LAPRELE CREEK 8375 2.1 2.9 72 3.8 4.0 95
RENO HILL 8400 3.3 3.9 85 5.2 4.8 108
ROACH 9700 5.6 3.9 144 8.2 4.9 167
SAND LAKE 10050 10.5 8.4 125 10.3 6.6 156
SOUTH PASS 9040 4.2 4.7 89 4.2 5.5 76
WINDY PEAK 7900 2.0 2.1 95 4.4 3.5 126
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Basin wide percent of average 101 126
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.1 1.7 124 4.9 4.0 123
DIVIDE PEAK 8880 4.2 4.6 91 7.5 5.7 132
OLD BATTLE 10000 9.8 8.2 120 11.7 8.4 139
SANDSTONE RS 8150 1.5 2.1 71 7.1 5.1 139
WHISKEY PARK 8950 4.5 5.5 82 10.7 7.1 151
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Basin wide percent of average 100 138
UPPER GREEN RIVER
BIG SANDY OPENING 9080 3.7 3.6 103 4.7 4.0 118
BLIND BULL SUM 8650 7.0 6.2 113 5.0 5.8 86
EAST RIM DIVIDE 7930 2.5 2.8 89 3.1 3.2 97
ELKHART PARK G.S. 9400 2.5 3.1 81 3.4 4.1 83
GROS VENTRE SUMMIT 8750 4.3 3.5 123 4.5 3.9 115
GUNSIGHT PASS 9820 4.5 -M * 5.0 -M *
KENDALL R.S. 7740 1.8 2.8 64 3.8 3.7 103
LOOMIS PARK 8240 3.9 3.8 103 4.9 4.5 109
NEW FORK LAKE 8340 2.6 2.4 108 3.0 3.6 83
POCKET CREEK 9360 3.3 -M * 4.4 -M *
SNIDER BASIN 8060 5.0 3.2 156 6.1 4.1 149
SPRING CREEK DIVIDE 9000 8.1 6.0 135 9.3 6.6 141
TRIPLE PEAK 8500 6.9 5.5 125 8.9 5.9 151
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Basin wide percent of average 113 115
LOWER GREEN RIVER
HAMS FORK 7840 3.1 2.1 148 4.8 3.3 145
HEWINTA 9519 .9 2.0 45 5.4 4.6 117
HICKERSON PARK 9145 .7 1.4 50 2.8 3.1 90
HOLE-IN-ROCK 9150 1.6 1.3 123 3.3 2.8 118
INDIAN CREEK 9425 8.2 5.9 139 8.4 6.3 133
KELLEY R.S. 8180 5.1 3.7 138 7.4 5.2 142
STEEL CREEK PARK 10200 3.1 3.7 84 6.6 4.8 138
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Basin wide percent of average 113 129
UPPER BEAR RIVER
BUG LAKE 7950 5.9 3.6 164 8.9 5.2 171
HAYDEN FORK 9212 4.0 2.7 148 10.0 5.6 179
KELLEY R.S. 8180 5.1 3.7 138 7.4 5.2 142
LILY LAKE 9156 3.8 2.6 146 7.6 5.3 143
MONTE CRISTO 8960 8.4 4.6 183 11.4 6.6 173
SALT RIVER SUMMIT 7760 3.7 2.2 168 6.9 4.5 153
TRIAL LAKE 9992 8.9 5.1 175 11.0 6.1 180
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Basin wide percent of average 162 164
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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.