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 30 , 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 10.3 7.9 130 13.2 10.1 131
COTTONWOOD CREEK 7670 14.2 9.4 151 18.9 13.1 144
GRAND TARGHEE 9260 24.4 -M * 17.8 -M *
GRANITE CREEK 6770 10.9 7.3 149 13.2 9.3 142
GRASSY LAKE 7265 16.5 14.2 116 19.7 16.8 117
GROS VENTRE SUMMIT 8750 8.6 6.7 128 8.6 6.2 139
GUNSIGHT PASS 9820 9.2 -M * 9.5 -M *
LEWIS LAKE DIVIDE 7850 18.8 14.3 131 19.8 17.0 116
PHILLIPS BENCH 8200 16.5 12.2 135 18.0 13.1 137
SALT RIVER SUMMIT 7760 8.2 5.2 158 12.0 8.7 138
SNAKE RIVER STATION 6920 7.9 7.6 104 14.1 10.7 132
SPRING CREEK DIVIDE 9000 16.3 12.2 134 16.9 12.6 134
THUMB DIVIDE 7980 11.7 7.4 158 12.2 8.8 139
TOGWOTEE PASS 9580 14.8 11.3 131 15.9 11.7 136
TWO OCEAN PLATEAU 9240 19.0 13.1 145 15.3 13.1 117
WILLOW CREEK 8380 16.3 13.9 117 21.4 15.1 142
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Basin wide percent of average 133 132
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 12.4 11.2 111 12.2 9.8 124
BLACK BEAR 8170 22.6 16.8 135 23.3 17.1 136
CANYON 7870 8.3 5.9 141 9.6 7.6 126
FISHER CREEK 9100 18.6 15.9 117 18.4 16.6 111
MADISON PLATEAU 7750 14.6 10.9 134 16.4 12.1 136
NORTHEAST ENTRANCE 7350 5.8 4.8 121 7.8 6.3 124
PARKER PEAK 9400 13.8 10.3 134 14.1 8.0 176
SYLVAN LAKE 8420 11.7 10.2 115 14.7 10.8 136
THUMB DIVIDE 7980 11.7 7.4 158 12.2 8.8 139
TWO OCEAN PLATEAU 9240 19.0 13.1 145 15.3 13.1 117
WHISKEY CREEK 6800 10.1 7.3 138 12.5 9.6 130
WHITE MILL 8700 13.0 10.9 119 14.1 12.5 113
WOLVERINE 7650 7.2 5.6 129 7.3 6.9 106
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Basin wide percent of average 130 128
WIND RIVER
BURROUGHS CREEK 8750 7.8 6.6 118 8.2 7.8 105
CASTLE CREEK 8400 3.3 -M * 4.0 -M *
COLD SPRINGS 9630 4.7 4.6 102 4.5 5.6 80
DEER PARK 9700 12.3 6.7 184 13.3 10.7 124
HOBBS PARK 10100 8.3 7.6 109 7.2 6.3 114
LITTLE WARM 9370 6.4 5.2 123 6.6 6.6 100
SOUTH PASS 9040 10.1 8.1 125 8.9 9.0 99
ST. LAWRENCE ALT 8620 2.9 3.7 78 3.9 4.5 87
TOGWOTEE PASS 9580 14.8 11.3 131 15.9 11.7 136
TOWNSEND CREEK 8700 4.4 4.3 102 6.2 5.9 105
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Basin wide percent of average 123 110
BIGHORN BASIN
BALD MTN. 9380 10.1 9.5 106 9.1 8.3 110
BEAR TRAP MEADOW 8200 3.0 2.5 120 3.9 4.4 89
BLACKWATER 9780 13.9 11.8 118 13.2 10.6 125
BONE SPRINGS DIV 9350 7.6 7.7 99 7.1 7.1 100
EVENING STAR 9200 15.8 13.4 118 17.1 12.7 135
GRAVE SPRINGS 8550 3.5 3.9 90 4.1 4.8 85
KIRWIN 9550 6.6 5.8 114 7.1 5.8 122
MARQUETTE 8760 1.4 4.9 29 3.2 5.2 62
MIDDLE POWDER 7760 4.8 5.4 89 3.1 6.7 46
OWL CREEK 8975 2.2 2.6 85 2.5 2.9 86
POWDER RIVER PASS 9480 6.1 5.1 120 7.0 5.9 119
SHELL CREEK 9580 7.1 7.2 99 6.0 6.6 91
SYLVAN LAKE 8420 11.7 10.2 115 14.7 10.8 136
SYLVAN ROAD 7120 8.0 6.0 133 10.8 9.9 109
TIMBER CREEK 7950 2.0 3.0 67 2.5 3.7 68
YOUNTS PEAK 8350 9.2 7.7 119 8.5 8.0 106
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Basin wide percent of average 106 106
SHOSHONE RIVER
BLACKWATER 9780 13.9 11.8 118 13.2 10.6 125
EVENING STAR 9200 15.8 13.4 118 17.1 12.7 135
KIRWIN 9550 6.6 5.8 114 7.1 5.8 122
MARQUETTE 8760 1.4 4.9 29 3.2 5.2 62
SYLVAN LAKE 8420 11.7 10.2 115 14.7 10.8 136
SYLVAN ROAD 7120 8.0 6.0 133 10.8 9.9 109
YOUNTS PEAK 8350 9.2 7.7 119 8.5 8.0 106
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Basin wide percent of average 111 118
POWDER-TONGUE
BEAR TRAP MEADOW 8200 3.0 2.5 120 3.9 4.4 89
BIG GOOSE 7990 2.5 4.3 58 4.1 4.4 93
BONE SPRINGS DIV 9350 7.6 7.7 99 7.1 7.1 100
BURGESS JUNCTION 7880 3.4 5.4 63 4.8 6.0 80
CLOUD PEAK RESERVOIR 9860 6.4 5.6 114 6.9 6.3 110
DOME LAKE 8880 3.5 5.9 59 5.4 6.8 79
GRAVE SPRINGS 8550 3.5 3.9 90 4.1 4.8 85
HANSEN SAWMILL 8360 2.6 3.2 81 3.1 4.2 74
LITTLE GOOSE 8870 3.2 -M * 6.8 -M *
MIDDLE POWDER 7760 4.8 5.4 89 3.1 6.7 46
POWDER RIVER PASS 9480 6.1 5.1 120 7.0 5.9 119
SOLDIER PARK 8720 2.3 -M * 3.7 -M *
SUCKER CREEK 8880 4.9 5.1 96 5.7 6.6 86
TIE CREEK 6870 2.0 2.5 80 3.7 5.0 74
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Basin wide percent of average 89 86
BELLE FOURCHE
BLIND PARK 6890 2.6 3.5 74 8.0 6.1 131
COLE CANYON 5910 2.5 3.2 78 5.2 3.8 137
NORTH RAPID CREEK 6130 2.7 3.2 84 6.6 5.2 127
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Basin wide percent of average 79 131
UPPER N. PLATTE RIVER
COLUMBINE 9160 14.9 9.6 155 18.1 11.2 162
DIVIDE PEAK 8880 11.7 8.9 131 15.2 9.8 155
ELK RIVER 8700 11.5 6.9 167 14.1 8.6 164
JOE WRIGHT 10120 14.5 9.4 154 19.1 11.7 163
NORTH FRENCH CREEK 10130 20.7 13.0 159 20.4 11.7 174
OLD BATTLE 10000 23.3 14.3 163 23.7 15.5 153
SAGE CREEK BASIN 7850 7.9 5.2 152 10.9 5.7 191
SOUTH BRUSH CREEK 8440 9.1 5.0 182 12.4 7.6 163
TOWER 10500 27.5 20.1 137 27.4 17.4 157
WEBBER SPRINGS 9250 16.0 11.2 143 20.4 12.7 161
WILLOW CREEK PASS 9540 10.4 5.5 189 10.6 6.3 168
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Basin wide percent of average 154 163
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.5 10.4 139 15.9 9.9 161
CASPER MTN. 7900 5.3 6.8 78 8.2 7.1 115
DEADMAN HILL 10220 6.1 7.4 82 13.3 7.7 173
DEER PARK 9700 12.3 6.7 184 13.3 10.7 124
LAPRELE CREEK 8375 5.3 5.2 102 6.6 6.0 110
RENO HILL 8400 6.7 6.4 105 8.6 7.0 123
ROACH 9700 11.1 7.1 156 13.9 8.3 167
SAND LAKE 10050 18.5 14.6 127 17.9 11.3 158
SOUTH PASS 9040 10.1 8.1 125 8.9 9.0 99
WINDY PEAK 7900 4.0 3.4 118 6.5 5.4 120
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Basin wide percent of average 123 137
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.9 3.9 151 8.5 6.9 123
DIVIDE PEAK 8880 11.7 8.9 131 15.2 9.8 155
OLD BATTLE 10000 23.3 14.3 163 23.7 15.5 153
SANDSTONE RS 8150 7.1 5.0 142 14.3 8.7 164
WHISKEY PARK 8950 -M 10.7 * 20.7 12.8 162
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Basin wide percent of average 150 153
UPPER GREEN RIVER
BIG SANDY OPENING 9080 8.2 6.7 122 8.9 6.4 139
BLIND BULL SUM 8650 14.3 12.8 112 11.0 10.8 102
EAST RIM DIVIDE 7930 6.6 5.7 116 6.7 5.6 120
ELKHART PARK G.S. 9400 6.5 6.1 107 7.1 6.5 109
GROS VENTRE SUMMIT 8750 8.6 6.7 128 8.6 6.2 139
GUNSIGHT PASS 9820 9.2 -M * 9.5 -M *
KENDALL R.S. 7740 6.7 6.4 105 8.5 6.6 129
LOOMIS PARK 8240 9.6 7.8 123 10.6 8.1 131
NEW FORK LAKE 8340 6.1 5.2 117 5.9 5.8 102
POCKET CREEK 9360 6.6 -M * 8.0 -M *
SNIDER BASIN 8060 10.1 6.7 151 10.7 7.7 139
SPRING CREEK DIVIDE 9000 16.3 12.2 134 16.9 12.6 134
TRIPLE PEAK 8500 14.6 11.5 127 16.5 10.9 151
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Basin wide percent of average 123 128
LOWER GREEN RIVER
HAMS FORK 7840 7.5 5.3 142 8.3 5.6 148
HEWINTA 9519 5.2 4.0 130 9.5 6.9 138
HICKERSON PARK 9145 2.9 2.8 104 4.8 4.1 117
HOLE-IN-ROCK 9150 2.8 2.6 108 5.3 3.8 139
INDIAN CREEK 9425 16.8 12.1 139 15.8 11.8 134
KELLEY R.S. 8180 11.1 7.4 150 13.6 9.8 139
STEEL CREEK PARK 10200 8.3 6.5 128 11.4 7.4 154
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Basin wide percent of average 134 139
UPPER BEAR RIVER
BUG LAKE 7950 15.2 8.0 190 17.1 8.9 192
HAYDEN FORK 9212 10.8 6.1 177 16.9 9.7 174
KELLEY R.S. 8180 11.1 7.4 150 13.6 9.8 139
LILY LAKE 9156 9.8 5.3 185 12.9 8.5 152
MONTE CRISTO 8960 18.1 10.6 171 18.9 11.8 160
SALT RIVER SUMMIT 7760 8.2 5.2 158 12.0 8.7 138
TRIAL LAKE 9992 21.0 10.2 206 19.3 10.9 177
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Basin wide percent of average 178 162
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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.