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 WEDNESDAY: DECEMBER 22 , 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 9.3 6.9 135 12.2 9.0 136
COTTONWOOD CREEK 7670 13.6 8.1 168 18.1 11.6 156
GRAND TARGHEE 9260 22.3 -M * 16.7 -M *
GRANITE CREEK 6770 9.5 6.2 153 12.0 8.2 146
GRASSY LAKE 7265 14.2 12.4 115 17.4 14.7 118
GROS VENTRE SUMMIT 8750 8.1 5.9 137 8.1 5.7 142
GUNSIGHT PASS 9820 8.5 -M * 8.9 -M *
LEWIS LAKE DIVIDE 7850 16.1 12.4 130 18.1 15.1 120
PHILLIPS BENCH 8200 14.7 10.7 137 16.0 11.5 139
SALT RIVER SUMMIT 7760 7.5 4.5 167 11.2 7.6 147
SNAKE RIVER STATION 6920 7.2 6.6 109 13.0 9.6 135
SPRING CREEK DIVIDE 9000 15.2 10.8 141 16.1 11.1 145
THUMB DIVIDE 7980 10.1 6.4 158 10.9 7.9 138
TOGWOTEE PASS 9580 14.1 10.1 140 15.2 10.5 145
TWO OCEAN PLATEAU 9240 18.0 11.8 153 14.6 11.9 123
WILLOW CREEK 8380 14.8 12.2 121 20.0 13.5 148
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Basin wide percent of average 138 137
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 11.7 10.0 117 11.2 8.8 127
BLACK BEAR 8170 18.6 14.9 125 19.8 15.3 129
CANYON 7870 7.3 5.1 143 8.5 6.8 125
FISHER CREEK 9100 16.6 14.1 118 16.8 14.8 114
MADISON PLATEAU 7750 12.0 9.6 125 14.0 10.9 128
NORTHEAST ENTRANCE 7350 5.2 4.2 124 7.4 5.7 130
PARKER PEAK 9400 12.9 9.2 140 13.2 7.4 178
SYLVAN LAKE 8420 10.6 9.3 114 13.6 9.9 137
THUMB DIVIDE 7980 10.1 6.4 158 10.9 7.9 138
TWO OCEAN PLATEAU 9240 18.0 11.8 153 14.6 11.9 123
WHISKEY CREEK 6800 8.0 6.3 127 10.3 8.6 120
WHITE MILL 8700 12.0 9.8 122 12.9 11.3 114
WOLVERINE 7650 7.0 4.8 146 6.9 6.3 110
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Basin wide percent of average 130 127
WIND RIVER
BURROUGHS CREEK 8750 7.4 5.8 128 7.8 7.0 111
CASTLE CREEK 8400 3.1 -M * 3.8 -M *
COLD SPRINGS 9630 4.3 4.2 102 4.3 5.3 81
DEER PARK 9700 10.8 6.0 180 11.7 9.7 121
HOBBS PARK 10100 7.7 7.0 110 6.8 5.9 115
LITTLE WARM 9370 6.1 4.7 130 6.2 6.0 103
SOUTH PASS 9040 8.7 7.3 119 7.9 8.3 95
ST. LAWRENCE ALT 8620 2.6 3.5 74 3.5 4.3 81
TOGWOTEE PASS 9580 14.1 10.1 140 15.2 10.5 145
TOWNSEND CREEK 8700 4.0 3.9 103 6.0 5.6 107
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Basin wide percent of average 125 111
BIGHORN BASIN
BALD MTN. 9380 9.5 8.5 112 8.6 7.4 116
BEAR TRAP MEADOW 8200 2.8 2.3 122 3.7 4.2 88
BLACKWATER 9780 13.2 10.7 123 12.3 9.8 126
BONE SPRINGS DIV 9350 7.0 6.9 101 6.6 6.5 102
EVENING STAR 9200 14.7 12.0 123 15.8 11.5 137
GRAVE SPRINGS 8550 3.3 3.6 92 3.8 4.4 86
KIRWIN 9550 6.4 5.4 119 6.8 5.3 128
MARQUETTE 8760 1.3 4.5 29 3.1 5.0 62
MIDDLE POWDER 7760 4.8 5.1 94 3.2 6.2 52
OWL CREEK 8975 2.0 2.4 83 2.4 2.7 89
POWDER RIVER PASS 9480 5.7 4.5 127 6.5 5.4 120
SHELL CREEK 9580 6.5 6.6 98 5.7 6.0 95
SYLVAN LAKE 8420 10.6 9.3 114 13.6 9.9 137
SYLVAN ROAD 7120 7.4 5.4 137 10.1 9.2 110
TIMBER CREEK 7950 1.8 2.8 64 2.3 3.5 66
YOUNTS PEAK 8350 8.6 6.8 126 7.8 7.2 108
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Basin wide percent of average 109 108
SHOSHONE RIVER
BLACKWATER 9780 13.2 10.7 123 12.3 9.8 126
EVENING STAR 9200 14.7 12.0 123 15.8 11.5 137
KIRWIN 9550 6.4 5.4 119 6.8 5.3 128
MARQUETTE 8760 1.3 4.5 29 3.1 5.0 62
SYLVAN LAKE 8420 10.6 9.3 114 13.6 9.9 137
SYLVAN ROAD 7120 7.4 5.4 137 10.1 9.2 110
YOUNTS PEAK 8350 8.6 6.8 126 7.8 7.2 108
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Basin wide percent of average 115 120
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.8 2.3 122 3.7 4.2 88
BIG GOOSE 7990 -M 3.8 * 4.0 4.2 95
BONE SPRINGS DIV 9350 7.0 6.9 101 6.6 6.5 102
BURGESS JUNCTION 7880 3.2 4.9 65 4.6 5.5 84
CLOUD PEAK RESERVOIR 9860 6.2 5.1 122 6.2 5.9 105
DOME LAKE 8880 3.0 5.4 56 5.3 6.3 84
GRAVE SPRINGS 8550 3.3 3.6 92 3.8 4.4 86
HANSEN SAWMILL 8360 2.3 2.8 82 2.9 4.0 73
LITTLE GOOSE 8870 3.0 -M * 6.7 -M *
MIDDLE POWDER 7760 4.8 5.1 94 3.2 6.2 52
POWDER RIVER PASS 9480 5.7 4.5 127 6.5 5.4 120
SOLDIER PARK 8720 1.9 -M * 3.5 -M *
SUCKER CREEK 8880 4.6 4.6 100 5.4 6.0 90
TIE CREEK 6870 1.9 2.1 90 3.7 4.7 79
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Basin wide percent of average 95 88
BELLE FOURCHE
BLIND PARK 6890 2.2 2.8 79 7.6 5.6 136
COLE CANYON 5910 2.4 2.9 83 4.9 3.6 136
NORTH RAPID CREEK 6130 2.5 2.8 89 6.3 4.8 131
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Basin wide percent of average 84 134
UPPER N. PLATTE RIVER
COLUMBINE 9160 14.1 8.2 172 17.2 9.8 176
DIVIDE PEAK 8880 10.1 7.8 129 13.3 8.8 151
ELK RIVER 8700 9.7 5.8 167 12.7 7.6 167
JOE WRIGHT 10120 14.2 8.5 167 18.9 10.5 180
NORTH FRENCH CREEK 10130 20.0 11.6 172 19.9 10.5 190
OLD BATTLE 10000 20.4 13.0 157 22.1 13.8 160
SAGE CREEK BASIN 7850 6.5 4.5 144 9.5 5.1 186
SOUTH BRUSH CREEK 8440 9.0 4.4 205 12.2 6.9 177
TOWER 10500 25.7 18.0 143 26.8 15.5 173
WEBBER SPRINGS 9250 13.9 10.0 139 18.3 11.4 161
WILLOW CREEK PASS 9540 9.7 5.0 194 10.3 5.8 178
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Basin wide percent of average 158 171
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.0 9.2 152 15.5 8.9 174
CASPER MTN. 7900 5.0 6.2 81 7.7 6.7 115
DEADMAN HILL 10220 7.2 6.8 106 13.2 7.0 189
DEER PARK 9700 10.8 6.0 180 11.7 9.7 121
LAPRELE CREEK 8375 4.9 4.7 104 6.2 5.5 113
RENO HILL 8400 6.3 5.9 107 8.2 6.5 126
ROACH 9700 10.8 6.3 171 13.7 7.4 185
SAND LAKE 10050 17.9 13.2 136 17.6 10.2 173
SOUTH PASS 9040 8.7 7.3 119 7.9 8.3 95
WINDY PEAK 7900 4.0 3.2 125 6.4 5.0 128
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Basin wide percent of average 130 144
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.7 3.1 184 7.9 6.2 127
DIVIDE PEAK 8880 10.1 7.8 129 13.3 8.8 151
OLD BATTLE 10000 20.4 13.0 157 22.1 13.8 160
SANDSTONE RS 8150 6.0 4.2 143 12.4 7.7 161
WHISKEY PARK 8950 -M 9.3 * 18.8 11.4 165
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Basin wide percent of average 150 156
UPPER GREEN RIVER
BIG SANDY OPENING 9080 6.9 6.0 115 7.7 5.9 131
BLIND BULL SUM 8650 13.2 11.3 117 9.9 9.7 102
EAST RIM DIVIDE 7930 5.8 5.1 114 6.2 5.0 124
ELKHART PARK G.S. 9400 5.7 5.4 106 6.3 6.0 105
GROS VENTRE SUMMIT 8750 8.1 5.9 137 8.1 5.7 142
GUNSIGHT PASS 9820 8.5 -M * 8.9 -M *
KENDALL R.S. 7740 5.9 5.5 107 7.7 5.9 131
LOOMIS PARK 8240 8.7 6.9 126 9.7 7.2 135
NEW FORK LAKE 8340 5.4 4.6 117 5.4 5.2 104
POCKET CREEK 9360 5.8 -M * 6.9 -M *
SNIDER BASIN 8060 9.1 5.9 154 9.9 6.8 146
SPRING CREEK DIVIDE 9000 15.2 10.8 141 16.1 11.1 145
TRIPLE PEAK 8500 13.5 10.2 132 15.6 9.6 163
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Basin wide percent of average 126 131
LOWER GREEN RIVER
HAMS FORK 7840 6.6 4.5 147 7.5 5.0 150
HEWINTA 9519 5.4 3.4 159 9.3 6.4 145
HICKERSON PARK 9145 2.7 2.4 113 4.7 3.9 121
HOLE-IN-ROCK 9150 2.8 2.3 122 5.2 3.6 144
INDIAN CREEK 9425 15.1 10.7 141 14.3 10.5 136
KELLEY R.S. 8180 9.9 6.6 150 12.5 8.6 145
STEEL CREEK PARK 10200 7.9 5.8 136 10.9 6.8 160
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Basin wide percent of average 141 144
UPPER BEAR RIVER
BUG LAKE 7950 13.5 6.8 199 16.0 8.1 198
HAYDEN FORK 9212 9.8 5.2 188 16.3 8.7 187
KELLEY R.S. 8180 9.9 6.6 150 12.5 8.6 145
LILY LAKE 9156 9.5 4.6 207 12.3 7.7 160
MONTE CRISTO 8960 16.4 9.0 182 18.4 10.6 174
SALT RIVER SUMMIT 7760 7.5 4.5 167 11.2 7.6 147
TRIAL LAKE 9992 18.4 8.9 207 18.5 9.7 191
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Basin wide percent of average 186 172
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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.