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: DECEMBER 25 , 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 9.5 7.3 130 12.4 9.4 132
COTTONWOOD CREEK 7670 13.8 8.6 160 18.3 12.2 150
GRAND TARGHEE 9260 23.2 -M * 17.3 -M *
GRANITE CREEK 6770 10.1 6.6 153 12.6 8.6 147
GRASSY LAKE 7265 14.9 13.1 114 18.2 15.5 117
GROS VENTRE SUMMIT 8750 8.2 6.2 132 8.1 5.9 137
GUNSIGHT PASS 9820 8.8 -M * 9.1 -M *
LEWIS LAKE DIVIDE 7850 16.6 13.1 127 18.5 15.8 117
PHILLIPS BENCH 8200 15.4 11.3 136 16.8 12.1 139
SALT RIVER SUMMIT 7760 7.7 4.7 164 11.5 8.0 144
SNAKE RIVER STATION 6920 7.4 7.0 106 13.3 10.0 133
SPRING CREEK DIVIDE 9000 15.6 11.4 137 16.4 11.7 140
THUMB DIVIDE 7980 10.5 6.8 154 11.2 8.2 137
TOGWOTEE PASS 9580 14.4 10.6 136 15.5 10.9 142
TWO OCEAN PLATEAU 9240 18.1 12.3 147 14.8 12.3 120
WILLOW CREEK 8380 15.3 12.8 120 20.4 14.1 145
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Basin wide percent of average 135 134
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 11.8 10.3 115 11.6 9.1 127
BLACK BEAR 8170 19.2 15.5 124 20.4 15.9 128
CANYON 7870 7.5 5.3 142 8.9 7.1 125
FISHER CREEK 9100 16.9 14.8 114 17.3 15.4 112
MADISON PLATEAU 7750 12.4 10.1 123 14.4 11.3 127
NORTHEAST ENTRANCE 7350 5.3 4.5 118 7.5 5.9 127
PARKER PEAK 9400 13.1 9.5 138 13.4 7.6 176
SYLVAN LAKE 8420 10.9 9.5 115 13.8 10.2 135
THUMB DIVIDE 7980 10.5 6.8 154 11.2 8.2 137
TWO OCEAN PLATEAU 9240 18.1 12.3 147 14.8 12.3 120
WHISKEY CREEK 6800 8.3 6.7 124 10.9 9.0 121
WHITE MILL 8700 12.2 10.2 120 13.3 11.7 114
WOLVERINE 7650 7.0 5.1 137 7.1 6.5 109
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Basin wide percent of average 127 126
WIND RIVER
BURROUGHS CREEK 8750 7.5 6.1 123 7.9 7.3 108
CASTLE CREEK 8400 3.2 -M * 3.9 -M *
COLD SPRINGS 9630 4.4 4.4 100 4.4 5.4 81
DEER PARK 9700 11.3 6.1 185 12.3 10.1 122
HOBBS PARK 10100 7.8 7.2 108 7.0 6.0 117
LITTLE WARM 9370 6.2 4.9 127 6.4 6.2 103
SOUTH PASS 9040 9.0 7.5 120 8.2 8.6 95
ST. LAWRENCE ALT 8620 2.7 3.6 75 3.6 4.4 82
TOGWOTEE PASS 9580 14.4 10.6 136 15.5 10.9 142
TOWNSEND CREEK 8700 4.1 4.1 100 6.1 5.7 107
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Basin wide percent of average 124 111
BIGHORN BASIN
BALD MTN. 9380 9.8 8.9 110 8.8 7.7 114
BEAR TRAP MEADOW 8200 2.9 2.4 121 3.8 4.3 88
BLACKWATER 9780 13.5 11.0 123 12.7 10.1 126
BONE SPRINGS DIV 9350 7.2 7.3 99 6.8 6.7 101
EVENING STAR 9200 14.8 12.4 119 16.2 11.9 136
GRAVE SPRINGS 8550 3.4 3.7 92 3.9 4.5 87
KIRWIN 9550 6.5 5.5 118 7.0 5.5 127
MARQUETTE 8760 1.5 4.7 32 3.2 5.1 63
MIDDLE POWDER 7760 4.8 5.2 92 3.2 6.4 50
OWL CREEK 8975 2.1 2.5 84 2.5 2.8 89
POWDER RIVER PASS 9480 6.0 4.8 125 6.8 5.6 121
SHELL CREEK 9580 6.8 6.9 99 5.9 6.2 95
SYLVAN LAKE 8420 10.9 9.5 115 13.8 10.2 135
SYLVAN ROAD 7120 7.6 5.5 138 10.4 9.5 109
TIMBER CREEK 7950 1.8 2.9 62 2.3 3.6 64
YOUNTS PEAK 8350 8.7 7.1 123 8.0 7.5 107
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Basin wide percent of average 108 107
SHOSHONE RIVER
BLACKWATER 9780 13.5 11.0 123 12.7 10.1 126
EVENING STAR 9200 14.8 12.4 119 16.2 11.9 136
KIRWIN 9550 6.5 5.5 118 7.0 5.5 127
MARQUETTE 8760 1.5 4.7 32 3.2 5.1 63
SYLVAN LAKE 8420 10.9 9.5 115 13.8 10.2 135
SYLVAN ROAD 7120 7.6 5.5 138 10.4 9.5 109
YOUNTS PEAK 8350 8.7 7.1 123 8.0 7.5 107
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Basin wide percent of average 114 119
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.9 2.4 121 3.8 4.3 88
BIG GOOSE 7990 2.4 4.0 60 4.0 4.3 93
BONE SPRINGS DIV 9350 7.2 7.3 99 6.8 6.7 101
BURGESS JUNCTION 7880 3.3 5.2 63 4.6 5.7 81
CLOUD PEAK RESERVOIR 9860 6.2 5.3 117 6.2 6.1 102
DOME LAKE 8880 3.2 5.7 56 5.3 6.5 82
GRAVE SPRINGS 8550 3.4 3.7 92 3.9 4.5 87
HANSEN SAWMILL 8360 2.3 2.9 79 2.9 4.1 71
LITTLE GOOSE 8870 3.1 -M * 6.8 -M *
MIDDLE POWDER 7760 4.8 5.2 92 3.2 6.4 50
POWDER RIVER PASS 9480 6.0 4.8 125 6.8 5.6 121
SOLDIER PARK 8720 1.9 -M * 3.6 -M *
SUCKER CREEK 8880 4.7 4.9 96 5.5 6.2 89
TIE CREEK 6870 2.0 2.2 91 3.6 4.8 75
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Basin wide percent of average 90 87
BELLE FOURCHE
BLIND PARK 6890 2.4 3.2 75 7.8 5.8 134
COLE CANYON 5910 2.5 3.0 83 5.0 3.7 135
NORTH RAPID CREEK 6130 2.6 2.9 90 6.5 5.0 130
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Basin wide percent of average 82 133
UPPER N. PLATTE RIVER
COLUMBINE 9160 14.3 8.7 164 17.5 10.3 170
DIVIDE PEAK 8880 10.9 8.2 133 14.4 9.2 157
ELK RIVER 8700 10.3 6.2 166 13.2 8.0 165
JOE WRIGHT 10120 14.2 8.8 161 19.0 10.9 174
NORTH FRENCH CREEK 10130 20.2 12.1 167 20.1 10.9 184
OLD BATTLE 10000 21.3 13.5 158 22.9 14.5 158
SAGE CREEK BASIN 7850 6.9 4.8 144 9.9 5.3 187
SOUTH BRUSH CREEK 8440 9.1 4.6 198 12.3 7.2 171
TOWER 10500 26.1 18.8 139 27.2 16.2 168
WEBBER SPRINGS 9250 14.6 10.4 140 18.9 11.9 159
WILLOW CREEK PASS 9540 9.9 5.1 194 10.4 6.0 173
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Basin wide percent of average 156 168
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.1 9.7 145 15.7 9.3 169
CASPER MTN. 7900 5.0 6.5 77 7.9 6.8 116
DEADMAN HILL 10220 6.3 7.0 90 13.2 7.3 181
DEER PARK 9700 11.3 6.1 185 12.3 10.1 122
LAPRELE CREEK 8375 5.0 4.9 102 6.4 5.7 112
RENO HILL 8400 6.3 6.1 103 8.2 6.7 122
ROACH 9700 10.9 6.6 165 13.5 7.7 175
SAND LAKE 10050 18.0 13.7 131 17.5 10.6 165
SOUTH PASS 9040 9.0 7.5 120 8.2 8.6 95
WINDY PEAK 7900 4.0 3.3 121 6.4 5.1 125
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Basin wide percent of average 126 140
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.8 3.4 171 8.1 6.5 125
DIVIDE PEAK 8880 10.9 8.2 133 14.4 9.2 157
OLD BATTLE 10000 21.3 13.5 158 22.9 14.5 158
SANDSTONE RS 8150 6.2 4.5 138 12.9 8.0 161
WHISKEY PARK 8950 -M 9.8 * 19.7 11.9 166
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Basin wide percent of average 149 156
UPPER GREEN RIVER
BIG SANDY OPENING 9080 7.3 6.3 116 8.0 6.1 131
BLIND BULL SUM 8650 13.5 11.9 113 10.3 10.1 102
EAST RIM DIVIDE 7930 6.1 5.3 115 6.5 5.2 125
ELKHART PARK G.S. 9400 6.1 5.7 107 6.7 6.2 108
GROS VENTRE SUMMIT 8750 8.2 6.2 132 8.1 5.9 137
GUNSIGHT PASS 9820 8.8 -M * 9.1 -M *
KENDALL R.S. 7740 6.2 5.9 105 8.0 6.2 129
LOOMIS PARK 8240 9.1 7.3 125 10.0 7.5 133
NEW FORK LAKE 8340 5.7 4.8 119 5.7 5.4 106
POCKET CREEK 9360 6.2 -M * 7.4 -M *
SNIDER BASIN 8060 9.5 6.2 153 10.1 7.1 142
SPRING CREEK DIVIDE 9000 15.6 11.4 137 16.4 11.7 140
TRIPLE PEAK 8500 13.9 10.7 130 15.8 10.1 156
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Basin wide percent of average 124 130
LOWER GREEN RIVER
HAMS FORK 7840 6.9 4.8 144 7.8 5.2 150
HEWINTA 9519 5.4 3.6 150 9.4 6.6 142
HICKERSON PARK 9145 2.6 2.5 104 4.6 4.0 115
HOLE-IN-ROCK 9150 2.7 2.4 113 5.2 3.7 141
INDIAN CREEK 9425 15.6 11.2 139 14.8 10.9 136
KELLEY R.S. 8180 10.1 6.9 146 12.7 9.0 141
STEEL CREEK PARK 10200 8.2 6.1 134 11.2 7.0 160
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Basin wide percent of average 137 142
UPPER BEAR RIVER
BUG LAKE 7950 13.8 7.2 192 16.2 8.4 193
HAYDEN FORK 9212 10.2 5.5 185 17.0 9.1 187
KELLEY R.S. 8180 10.1 6.9 146 12.7 9.0 141
LILY LAKE 9156 9.5 4.9 194 12.6 8.0 158
MONTE CRISTO 8960 16.9 9.6 176 18.8 11.0 171
SALT RIVER SUMMIT 7760 7.7 4.7 164 11.5 8.0 144
TRIAL LAKE 9992 19.2 9.3 206 18.9 10.2 185
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Basin wide percent of average 182 169
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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.