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 MONDAY: DECEMBER 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 9.6 7.5 128 12.5 9.7 129
COTTONWOOD CREEK 7670 13.8 8.9 155 18.4 12.5 147
GRAND TARGHEE 9260 23.2 -M * 17.3 -M *
GRANITE CREEK 6770 10.2 6.9 148 12.6 8.9 142
GRASSY LAKE 7265 15.1 13.5 112 18.4 16.0 115
GROS VENTRE SUMMIT 8750 8.3 6.4 130 8.2 6.0 137
GUNSIGHT PASS 9820 8.8 -M * 9.1 -M *
LEWIS LAKE DIVIDE 7850 17.0 13.5 126 18.8 16.3 115
PHILLIPS BENCH 8200 15.5 11.7 132 17.0 12.5 136
SALT RIVER SUMMIT 7760 7.6 4.9 155 11.5 8.3 139
SNAKE RIVER STATION 6920 7.0 7.2 97 13.5 10.3 131
SPRING CREEK DIVIDE 9000 15.7 11.7 134 16.4 12.0 137
THUMB DIVIDE 7980 10.6 7.0 151 11.4 8.5 134
TOGWOTEE PASS 9580 14.4 10.9 132 15.5 11.2 138
TWO OCEAN PLATEAU 9240 18.2 12.6 144 15.0 12.7 118
WILLOW CREEK 8380 15.3 13.2 116 20.6 14.5 142
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Basin wide percent of average 131 132
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 12.0 10.7 112 11.8 9.4 126
BLACK BEAR 8170 19.8 15.9 125 20.8 16.4 127
CANYON 7870 7.5 5.5 136 9.0 7.3 123
FISHER CREEK 9100 17.3 15.2 114 17.5 15.9 110
MADISON PLATEAU 7750 12.9 10.3 125 14.8 11.6 128
NORTHEAST ENTRANCE 7350 5.3 4.6 115 7.6 6.0 127
PARKER PEAK 9400 13.2 9.8 135 13.7 7.8 176
SYLVAN LAKE 8420 11.0 9.7 113 14.0 10.5 133
THUMB DIVIDE 7980 10.6 7.0 151 11.4 8.5 134
TWO OCEAN PLATEAU 9240 18.2 12.6 144 15.0 12.7 118
WHISKEY CREEK 6800 8.7 6.8 128 11.1 9.3 119
WHITE MILL 8700 12.3 10.4 118 13.5 12.0 113
WOLVERINE 7650 7.0 5.3 132 7.2 6.6 109
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Basin wide percent of average 126 125
WIND RIVER
BURROUGHS CREEK 8750 7.6 6.3 121 8.1 7.5 108
CASTLE CREEK 8400 3.3 -M * 4.0 -M *
COLD SPRINGS 9630 4.5 4.4 102 4.5 5.5 82
DEER PARK 9700 11.4 6.2 184 12.3 10.3 119
HOBBS PARK 10100 7.9 7.3 108 7.1 6.1 116
LITTLE WARM 9370 6.2 5.0 124 6.5 6.4 102
SOUTH PASS 9040 9.1 7.7 118 8.3 8.7 95
ST. LAWRENCE ALT 8620 2.8 3.6 78 3.6 4.5 80
TOGWOTEE PASS 9580 14.4 10.9 132 15.5 11.2 138
TOWNSEND CREEK 8700 4.2 4.2 100 6.2 5.8 107
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Basin wide percent of average 122 109
BIGHORN BASIN
BALD MTN. 9380 9.8 9.2 107 9.0 7.9 114
BEAR TRAP MEADOW 8200 3.0 2.5 120 4.0 4.3 93
BLACKWATER 9780 13.5 11.3 119 12.7 10.3 123
BONE SPRINGS DIV 9350 7.2 7.5 96 6.9 6.9 100
EVENING STAR 9200 15.1 12.7 119 16.5 12.2 135
GRAVE SPRINGS 8550 3.4 3.8 89 4.0 4.6 87
KIRWIN 9550 6.5 5.6 116 7.0 5.6 125
MARQUETTE 8760 1.4 4.8 29 3.2 5.1 63
MIDDLE POWDER 7760 4.8 5.3 91 3.3 6.5 51
OWL CREEK 8975 2.1 2.6 81 2.5 2.8 89
POWDER RIVER PASS 9480 6.0 4.9 122 7.0 5.7 123
SHELL CREEK 9580 6.9 7.0 99 5.9 6.3 94
SYLVAN LAKE 8420 11.0 9.7 113 14.0 10.5 133
SYLVAN ROAD 7120 7.7 5.7 135 10.5 9.7 108
TIMBER CREEK 7950 1.9 3.0 63 2.4 3.6 67
YOUNTS PEAK 8350 8.9 7.3 122 8.2 7.7 106
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Basin wide percent of average 106 107
SHOSHONE RIVER
BLACKWATER 9780 13.5 11.3 119 12.7 10.3 123
EVENING STAR 9200 15.1 12.7 119 16.5 12.2 135
KIRWIN 9550 6.5 5.6 116 7.0 5.6 125
MARQUETTE 8760 1.4 4.8 29 3.2 5.1 63
SYLVAN LAKE 8420 11.0 9.7 113 14.0 10.5 133
SYLVAN ROAD 7120 7.7 5.7 135 10.5 9.7 108
YOUNTS PEAK 8350 8.9 7.3 122 8.2 7.7 106
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Basin wide percent of average 112 118
POWDER-TONGUE
BEAR TRAP MEADOW 8200 3.0 2.5 120 4.0 4.3 93
BIG GOOSE 7990 2.6 4.1 63 4.2 4.3 98
BONE SPRINGS DIV 9350 7.2 7.5 96 6.9 6.9 100
BURGESS JUNCTION 7880 3.4 5.3 64 4.8 5.8 83
CLOUD PEAK RESERVOIR 9860 6.4 5.5 116 7.0 6.2 113
DOME LAKE 8880 3.4 5.7 60 5.5 6.6 83
GRAVE SPRINGS 8550 3.4 3.8 89 4.0 4.6 87
HANSEN SAWMILL 8360 2.6 3.1 84 3.1 4.1 76
LITTLE GOOSE 8870 3.1 -M * 6.9 -M *
MIDDLE POWDER 7760 4.8 5.3 91 3.3 6.5 51
POWDER RIVER PASS 9480 6.0 4.9 122 7.0 5.7 123
SOLDIER PARK 8720 2.1 -M * 3.6 -M *
SUCKER CREEK 8880 4.8 5.0 96 5.5 6.4 86
TIE CREEK 6870 2.1 2.4 88 3.8 4.9 78
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Basin wide percent of average 90 89
BELLE FOURCHE
BLIND PARK 6890 2.6 3.2 81 7.9 5.9 134
COLE CANYON 5910 2.7 3.1 87 5.1 3.8 134
NORTH RAPID CREEK 6130 2.7 3.0 90 6.7 5.1 131
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Basin wide percent of average 86 133
UPPER N. PLATTE RIVER
COLUMBINE 9160 14.7 9.1 162 17.7 10.6 167
DIVIDE PEAK 8880 11.1 8.5 131 14.4 9.4 153
ELK RIVER 8700 10.4 6.5 160 13.4 8.2 163
JOE WRIGHT 10120 14.5 9.1 159 19.0 11.2 170
NORTH FRENCH CREEK 10130 20.4 12.5 163 20.2 11.2 180
OLD BATTLE 10000 21.7 13.8 157 23.1 14.9 155
SAGE CREEK BASIN 7850 7.0 4.9 143 10.0 5.5 182
SOUTH BRUSH CREEK 8440 9.1 4.8 190 12.4 7.3 170
TOWER 10500 26.6 19.3 138 27.3 16.7 163
WEBBER SPRINGS 9250 14.8 10.7 138 19.2 12.2 157
WILLOW CREEK PASS 9540 9.9 5.3 187 10.4 6.1 170
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Basin wide percent of average 153 165
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.3 10.0 143 15.7 9.5 165
CASPER MTN. 7900 5.0 6.6 76 7.8 6.9 113
DEADMAN HILL 10220 6.0 7.2 83 13.2 7.4 178
DEER PARK 9700 11.4 6.2 184 12.3 10.3 119
LAPRELE CREEK 8375 5.2 5.0 104 6.5 5.8 112
RENO HILL 8400 6.5 6.2 105 8.3 6.8 122
ROACH 9700 11.0 6.8 162 13.7 7.9 173
SAND LAKE 10050 18.3 14.1 130 17.9 10.9 164
SOUTH PASS 9040 9.1 7.7 118 8.3 8.7 95
WINDY PEAK 7900 4.0 3.3 121 6.4 5.3 121
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Basin wide percent of average 124 138
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.8 3.6 161 8.2 6.7 122
DIVIDE PEAK 8880 11.1 8.5 131 14.4 9.4 153
OLD BATTLE 10000 21.7 13.8 157 23.1 14.9 155
SANDSTONE RS 8150 6.2 4.7 132 13.1 8.3 158
WHISKEY PARK 8950 -M 10.1 * 20.0 12.2 164
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Basin wide percent of average 146 153
UPPER GREEN RIVER
BIG SANDY OPENING 9080 7.4 6.5 114 8.1 6.2 131
BLIND BULL SUM 8650 13.6 12.2 111 10.4 10.3 101
EAST RIM DIVIDE 7930 6.1 5.5 111 6.5 5.4 120
ELKHART PARK G.S. 9400 6.1 5.9 103 6.7 6.3 106
GROS VENTRE SUMMIT 8750 8.3 6.4 130 8.2 6.0 137
GUNSIGHT PASS 9820 8.8 -M * 9.1 -M *
KENDALL R.S. 7740 6.3 6.1 103 8.1 6.4 127
LOOMIS PARK 8240 9.1 7.5 121 10.1 7.8 129
NEW FORK LAKE 8340 5.7 5.0 114 5.7 5.5 104
POCKET CREEK 9360 6.2 -M * 7.4 -M *
SNIDER BASIN 8060 9.6 6.4 150 10.2 7.3 140
SPRING CREEK DIVIDE 9000 15.7 11.7 134 16.4 12.0 137
TRIPLE PEAK 8500 14.0 11.0 127 16.0 10.4 154
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Basin wide percent of average 121 127
LOWER GREEN RIVER
HAMS FORK 7840 -M 5.0 * -M 5.4 *
HEWINTA 9519 5.3 3.7 143 9.4 6.7 140
HICKERSON PARK 9145 2.7 2.6 104 4.7 4.1 115
HOLE-IN-ROCK 9150 2.7 2.5 108 5.3 3.7 143
INDIAN CREEK 9425 15.6 11.6 134 14.8 11.3 131
KELLEY R.S. 8180 10.0 7.1 141 12.7 9.3 137
STEEL CREEK PARK 10200 8.2 6.2 132 11.3 7.2 157
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Basin wide percent of average 132 138
UPPER BEAR RIVER
BUG LAKE 7950 13.9 7.5 185 16.3 8.6 190
HAYDEN FORK 9212 10.1 5.7 177 17.0 9.4 181
KELLEY R.S. 8180 10.0 7.1 141 12.7 9.3 137
LILY LAKE 9156 9.5 5.0 190 12.6 8.2 154
MONTE CRISTO 8960 17.1 10.0 171 18.9 11.3 167
SALT RIVER SUMMIT 7760 7.6 4.9 155 11.5 8.3 139
TRIAL LAKE 9992 19.3 9.7 199 19.0 10.5 181
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Basin wide percent of average 175 165
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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.