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 THURSDAY: DECEMBER 23 , 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 7.0 136 12.2 9.2 133
COTTONWOOD CREEK 7670 13.9 8.3 167 18.4 11.8 156
GRAND TARGHEE 9260 22.7 -M * 17.0 -M *
GRANITE CREEK 6770 10.1 6.4 158 12.5 8.3 151
GRASSY LAKE 7265 14.6 12.6 116 17.9 15.0 119
GROS VENTRE SUMMIT 8750 8.3 6.0 138 8.3 5.8 143
GUNSIGHT PASS 9820 8.7 -M * 9.1 -M *
LEWIS LAKE DIVIDE 7850 16.6 12.6 132 18.6 15.3 122
PHILLIPS BENCH 8200 15.4 10.9 141 16.8 11.7 144
SALT RIVER SUMMIT 7760 7.8 4.6 170 11.6 7.8 149
SNAKE RIVER STATION 6920 7.3 6.8 107 13.3 9.7 137
SPRING CREEK DIVIDE 9000 15.7 11.0 143 16.5 11.3 146
THUMB DIVIDE 7980 10.5 6.6 159 11.3 8.0 141
TOGWOTEE PASS 9580 14.4 10.3 140 15.4 10.6 145
TWO OCEAN PLATEAU 9240 18.1 12.0 151 14.9 12.0 124
WILLOW CREEK 8380 15.2 12.4 123 20.4 13.7 149
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Basin wide percent of average 139 139
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 11.9 10.1 118 11.8 8.9 133
BLACK BEAR 8170 19.1 15.1 126 20.3 15.5 131
CANYON 7870 7.4 5.2 142 8.8 6.9 128
FISHER CREEK 9100 16.9 14.4 117 17.2 15.0 115
MADISON PLATEAU 7750 12.5 9.8 128 14.5 11.0 132
NORTHEAST ENTRANCE 7350 5.3 4.3 123 7.6 5.8 131
PARKER PEAK 9400 13.2 9.3 142 13.5 7.5 180
SYLVAN LAKE 8420 10.9 9.4 116 13.8 10.0 138
THUMB DIVIDE 7980 10.5 6.6 159 11.3 8.0 141
TWO OCEAN PLATEAU 9240 18.1 12.0 151 14.9 12.0 124
WHISKEY CREEK 6800 8.3 6.5 128 10.5 8.8 119
WHITE MILL 8700 12.2 10.0 122 13.4 11.5 117
WOLVERINE 7650 7.0 4.9 143 7.3 6.4 114
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Basin wide percent of average 130 130
WIND RIVER
BURROUGHS CREEK 8750 7.6 5.9 129 8.1 7.1 114
CASTLE CREEK 8400 3.2 -M * 4.1 -M *
COLD SPRINGS 9630 4.5 4.2 107 4.5 5.3 85
DEER PARK 9700 11.2 6.0 187 12.2 9.8 124
HOBBS PARK 10100 7.9 7.1 111 7.2 5.9 122
LITTLE WARM 9370 6.2 4.7 132 6.5 6.1 107
SOUTH PASS 9040 9.2 7.4 124 8.3 8.4 99
ST. LAWRENCE ALT 8620 2.9 3.5 83 3.8 4.3 88
TOGWOTEE PASS 9580 14.4 10.3 140 15.4 10.6 145
TOWNSEND CREEK 8700 4.3 4.0 108 6.1 5.6 109
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Basin wide percent of average 128 114
BIGHORN BASIN
BALD MTN. 9380 9.7 8.7 111 8.8 7.5 117
BEAR TRAP MEADOW 8200 3.0 2.3 130 4.0 4.2 95
BLACKWATER 9780 13.4 10.9 123 12.7 9.9 128
BONE SPRINGS DIV 9350 7.1 7.1 100 6.9 6.6 105
EVENING STAR 9200 14.8 12.2 121 16.0 11.6 138
GRAVE SPRINGS 8550 3.5 3.7 95 4.0 4.5 89
KIRWIN 9550 6.6 5.4 122 7.2 5.4 133
MARQUETTE 8760 1.5 4.6 33 3.3 5.0 66
MIDDLE POWDER 7760 4.8 5.1 94 3.3 6.3 52
OWL CREEK 8975 2.1 2.4 88 2.6 2.7 96
POWDER RIVER PASS 9480 6.0 4.7 128 6.9 5.4 128
SHELL CREEK 9580 6.8 6.7 101 5.8 6.0 97
SYLVAN LAKE 8420 10.9 9.4 116 13.8 10.0 138
SYLVAN ROAD 7120 7.6 5.4 141 10.3 9.3 111
TIMBER CREEK 7950 1.9 2.9 66 2.4 3.5 69
YOUNTS PEAK 8350 8.8 6.9 128 8.2 7.3 112
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Basin wide percent of average 110 110
SHOSHONE RIVER
BLACKWATER 9780 13.4 10.9 123 12.7 9.9 128
EVENING STAR 9200 14.8 12.2 121 16.0 11.6 138
KIRWIN 9550 6.6 5.4 122 7.2 5.4 133
MARQUETTE 8760 1.5 4.6 33 3.3 5.0 66
SYLVAN LAKE 8420 10.9 9.4 116 13.8 10.0 138
SYLVAN ROAD 7120 7.6 5.4 141 10.3 9.3 111
YOUNTS PEAK 8350 8.8 6.9 128 8.2 7.3 112
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Basin wide percent of average 116 122
POWDER-TONGUE
BEAR TRAP MEADOW 8200 3.0 2.3 130 4.0 4.2 95
BIG GOOSE 7990 2.5 3.8 66 4.2 4.2 100
BONE SPRINGS DIV 9350 7.1 7.1 100 6.9 6.6 105
BURGESS JUNCTION 7880 3.3 5.0 66 4.8 5.6 86
CLOUD PEAK RESERVOIR 9860 6.4 5.1 125 6.9 6.0 115
DOME LAKE 8880 3.3 5.5 60 5.4 6.4 84
GRAVE SPRINGS 8550 3.5 3.7 95 4.0 4.5 89
HANSEN SAWMILL 8360 2.7 2.8 96 3.1 4.0 78
LITTLE GOOSE 8870 3.2 -M * 6.9 -M *
MIDDLE POWDER 7760 4.8 5.1 94 3.3 6.3 52
POWDER RIVER PASS 9480 6.0 4.7 128 6.9 5.4 128
SOLDIER PARK 8720 2.2 -M * 3.7 -M *
SUCKER CREEK 8880 4.8 4.7 102 5.5 6.1 90
TIE CREEK 6870 2.0 2.2 91 3.8 4.7 81
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Basin wide percent of average 95 92
BELLE FOURCHE
BLIND PARK 6890 2.4 2.9 83 7.8 5.7 137
COLE CANYON 5910 2.6 2.9 90 4.9 3.6 136
NORTH RAPID CREEK 6130 2.6 2.8 93 6.6 4.9 135
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Basin wide percent of average 88 136
UPPER N. PLATTE RIVER
COLUMBINE 9160 14.2 8.4 169 17.5 10.0 175
DIVIDE PEAK 8880 10.4 8.0 130 14.0 8.9 157
ELK RIVER 8700 9.9 5.9 168 12.9 7.7 168
JOE WRIGHT 10120 14.3 8.6 166 18.9 10.7 177
NORTH FRENCH CREEK 10130 20.1 11.8 170 20.0 10.7 187
OLD BATTLE 10000 20.7 13.1 158 22.5 14.0 161
SAGE CREEK BASIN 7850 6.8 4.6 148 9.7 5.2 187
SOUTH BRUSH CREEK 8440 9.0 4.5 200 12.4 7.0 177
TOWER 10500 25.8 18.3 141 27.1 15.7 173
WEBBER SPRINGS 9250 14.2 10.2 139 18.6 11.5 162
WILLOW CREEK PASS 9540 9.8 5.0 196 10.3 5.9 175
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Basin wide percent of average 158 171
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.0 9.3 151 15.6 9.0 173
CASPER MTN. 7900 5.1 6.3 81 7.7 6.7 115
DEADMAN HILL 10220 6.3 6.8 93 13.2 7.1 186
DEER PARK 9700 11.2 6.0 187 12.2 9.8 124
LAPRELE CREEK 8375 5.0 4.7 106 6.3 5.6 113
RENO HILL 8400 6.3 6.0 105 8.3 6.6 126
ROACH 9700 10.9 6.4 170 13.7 7.5 183
SAND LAKE 10050 18.0 13.4 134 17.7 10.3 172
SOUTH PASS 9040 9.2 7.4 124 8.3 8.4 99
WINDY PEAK 7900 4.0 3.2 125 6.4 5.0 128
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Basin wide percent of average 129 144
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.6 3.2 175 8.0 6.3 127
DIVIDE PEAK 8880 10.4 8.0 130 14.0 8.9 157
OLD BATTLE 10000 20.7 13.1 158 22.5 14.0 161
SANDSTONE RS 8150 6.0 4.3 140 12.6 7.8 162
WHISKEY PARK 8950 -M 9.4 * 19.0 11.6 164
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Basin wide percent of average 149 157
UPPER GREEN RIVER
BIG SANDY OPENING 9080 7.6 6.1 125 8.3 5.9 141
BLIND BULL SUM 8650 13.5 11.5 117 10.4 9.8 106
EAST RIM DIVIDE 7930 6.2 5.2 119 6.5 5.1 127
ELKHART PARK G.S. 9400 6.2 5.5 113 6.8 6.0 113
GROS VENTRE SUMMIT 8750 8.3 6.0 138 8.3 5.8 143
GUNSIGHT PASS 9820 8.7 -M * 9.1 -M *
KENDALL R.S. 7740 6.3 5.7 111 8.1 6.0 135
LOOMIS PARK 8240 9.2 7.0 131 10.1 7.3 138
NEW FORK LAKE 8340 5.8 4.7 123 5.7 5.3 108
POCKET CREEK 9360 6.3 -M * 7.4 -M *
SNIDER BASIN 8060 9.5 6.0 158 10.3 6.9 149
SPRING CREEK DIVIDE 9000 15.7 11.0 143 16.5 11.3 146
TRIPLE PEAK 8500 13.9 10.3 135 16.0 9.8 163
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Basin wide percent of average 129 135
LOWER GREEN RIVER
HAMS FORK 7840 7.0 4.6 152 7.8 5.1 153
HEWINTA 9519 5.5 3.5 157 9.5 6.5 146
HICKERSON PARK 9145 2.8 2.5 112 4.9 3.9 126
HOLE-IN-ROCK 9150 2.8 2.3 122 5.3 3.6 147
INDIAN CREEK 9425 15.6 10.9 143 14.9 10.6 141
KELLEY R.S. 8180 10.2 6.7 152 13.0 8.8 148
STEEL CREEK PARK 10200 8.2 5.9 139 11.2 6.9 162
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Basin wide percent of average 143 147
UPPER BEAR RIVER
BUG LAKE 7950 13.9 6.9 201 16.3 8.2 199
HAYDEN FORK 9212 10.3 5.3 194 16.9 8.9 190
KELLEY R.S. 8180 10.2 6.7 152 13.0 8.8 148
LILY LAKE 9156 9.6 4.7 204 12.5 7.8 160
MONTE CRISTO 8960 17.1 9.2 186 18.6 10.7 174
SALT RIVER SUMMIT 7760 7.8 4.6 170 11.6 7.8 149
TRIAL LAKE 9992 19.1 9.0 212 18.7 9.9 189
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Basin wide percent of average 190 173
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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.