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 FRIDAY: DECEMBER 31 , 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 8.1 127 13.3 10.3 129
COTTONWOOD CREEK 7670 14.3 9.5 151 19.0 13.3 143
GRAND TARGHEE 9260 24.3 -M * 17.8 -M *
GRANITE CREEK 6770 10.9 7.5 145 13.2 9.4 140
GRASSY LAKE 7265 16.5 14.5 114 19.6 17.1 115
GROS VENTRE SUMMIT 8750 8.7 6.8 128 8.5 6.3 135
GUNSIGHT PASS 9820 9.2 -M * 9.4 -M *
LEWIS LAKE DIVIDE 7850 18.8 14.5 130 19.7 17.3 114
PHILLIPS BENCH 8200 16.6 12.4 134 18.0 13.3 135
SALT RIVER SUMMIT 7760 8.2 5.3 155 12.0 8.8 136
SNAKE RIVER STATION 6920 8.0 7.7 104 14.2 10.9 130
SPRING CREEK DIVIDE 9000 16.3 12.3 133 16.9 12.8 132
THUMB DIVIDE 7980 11.7 7.5 156 12.2 9.0 136
TOGWOTEE PASS 9580 14.8 11.5 129 16.0 11.9 134
TWO OCEAN PLATEAU 9240 19.0 13.3 143 15.1 13.3 114
WILLOW CREEK 8380 16.5 14.1 117 21.6 15.3 141
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Basin wide percent of average 131 130
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 12.3 11.3 109 11.9 9.9 120
BLACK BEAR 8170 22.6 17.0 133 23.3 17.4 134
CANYON 7870 8.5 6.0 142 9.6 7.7 125
FISHER CREEK 9100 18.6 16.0 116 18.2 16.9 108
MADISON PLATEAU 7750 14.5 11.0 132 16.3 12.2 134
NORTHEAST ENTRANCE 7350 5.9 4.9 120 7.8 6.3 124
PARKER PEAK 9400 13.7 10.4 132 13.9 8.1 172
SYLVAN LAKE 8420 11.7 10.3 114 14.7 10.9 135
THUMB DIVIDE 7980 11.7 7.5 156 12.2 9.0 136
TWO OCEAN PLATEAU 9240 19.0 13.3 143 15.1 13.3 114
WHISKEY CREEK 6800 10.1 7.4 136 12.5 9.8 128
WHITE MILL 8700 13.0 11.0 118 13.8 12.6 110
WOLVERINE 7650 7.6 5.7 133 7.1 6.9 103
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Basin wide percent of average 128 125
WIND RIVER
BURROUGHS CREEK 8750 7.8 6.7 116 8.2 7.9 104
CASTLE CREEK 8400 3.5 -M * 4.1 -M *
COLD SPRINGS 9630 4.7 4.6 102 4.7 5.7 82
DEER PARK 9700 12.6 6.7 188 13.4 10.8 124
HOBBS PARK 10100 8.4 7.6 111 7.3 6.4 114
LITTLE WARM 9370 6.5 5.3 123 6.3 6.6 95
SOUTH PASS 9040 10.1 8.1 125 8.9 9.1 98
ST. LAWRENCE ALT 8620 2.9 3.7 78 4.0 4.6 87
TOGWOTEE PASS 9580 14.8 11.5 129 16.0 11.9 134
TOWNSEND CREEK 8700 4.5 4.4 102 6.5 6.0 108
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Basin wide percent of average 123 109
BIGHORN BASIN
BALD MTN. 9380 10.1 9.6 105 9.0 8.4 107
BEAR TRAP MEADOW 8200 3.2 2.6 123 4.0 4.5 89
BLACKWATER 9780 13.9 11.9 117 12.9 10.7 121
BONE SPRINGS DIV 9350 7.8 7.7 101 6.9 7.2 96
EVENING STAR 9200 15.9 13.5 118 17.0 12.8 133
GRAVE SPRINGS 8550 3.4 4.0 85 4.2 4.9 86
KIRWIN 9550 6.7 5.9 114 6.9 5.8 119
MARQUETTE 8760 1.5 4.9 31 3.2 5.3 60
MIDDLE POWDER 7760 4.9 5.5 89 3.1 6.8 46
OWL CREEK 8975 2.3 2.7 85 2.5 2.9 86
POWDER RIVER PASS 9480 6.4 5.2 123 7.0 5.9 119
SHELL CREEK 9580 7.2 7.3 99 6.3 6.6 95
SYLVAN LAKE 8420 11.7 10.3 114 14.7 10.9 135
SYLVAN ROAD 7120 8.0 6.1 131 10.8 10.0 108
TIMBER CREEK 7950 2.0 3.0 67 2.6 3.7 70
YOUNTS PEAK 8350 9.2 7.8 118 8.2 8.1 101
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Basin wide percent of average 106 104
SHOSHONE RIVER
BLACKWATER 9780 13.9 11.9 117 12.9 10.7 121
EVENING STAR 9200 15.9 13.5 118 17.0 12.8 133
KIRWIN 9550 6.7 5.9 114 6.9 5.8 119
MARQUETTE 8760 1.5 4.9 31 3.2 5.3 60
SYLVAN LAKE 8420 11.7 10.3 114 14.7 10.9 135
SYLVAN ROAD 7120 8.0 6.1 131 10.8 10.0 108
YOUNTS PEAK 8350 9.2 7.8 118 8.2 8.1 101
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Basin wide percent of average 111 116
POWDER-TONGUE
BEAR TRAP MEADOW 8200 3.2 2.6 123 4.0 4.5 89
BIG GOOSE 7990 2.5 4.3 58 4.1 4.5 91
BONE SPRINGS DIV 9350 7.8 7.7 101 6.9 7.2 96
BURGESS JUNCTION 7880 3.5 5.4 65 4.7 6.0 78
CLOUD PEAK RESERVOIR 9860 6.6 5.7 116 6.4 6.4 100
DOME LAKE 8880 3.4 6.0 57 5.6 6.8 82
GRAVE SPRINGS 8550 3.4 4.0 85 4.2 4.9 86
HANSEN SAWMILL 8360 2.5 3.2 78 3.3 4.3 77
LITTLE GOOSE 8870 3.2 -M * 6.6 -M *
MIDDLE POWDER 7760 4.9 5.5 89 3.1 6.8 46
POWDER RIVER PASS 9480 6.4 5.2 123 7.0 5.9 119
SOLDIER PARK 8720 2.4 -M * 3.9 -M *
SUCKER CREEK 8880 4.9 5.2 94 5.7 6.6 86
TIE CREEK 6870 2.0 2.5 80 3.7 5.1 73
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Basin wide percent of average 89 85
BELLE FOURCHE
BLIND PARK 6890 2.5 3.5 71 8.0 6.1 131
COLE CANYON 5910 2.4 3.2 75 5.3 3.9 136
NORTH RAPID CREEK 6130 2.8 3.2 88 6.5 5.3 123
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Basin wide percent of average 78 129
UPPER N. PLATTE RIVER
COLUMBINE 9160 15.2 9.8 155 17.8 11.3 158
DIVIDE PEAK 8880 11.8 9.1 130 15.1 9.9 153
ELK RIVER 8700 11.8 7.1 166 14.4 8.8 164
JOE WRIGHT 10120 14.2 9.6 148 18.8 11.8 159
NORTH FRENCH CREEK 10130 20.8 13.2 158 20.5 11.9 172
OLD BATTLE 10000 23.4 14.5 161 24.1 15.8 153
SAGE CREEK BASIN 7850 9.6 5.3 181 10.9 5.8 188
SOUTH BRUSH CREEK 8440 9.2 5.1 180 12.1 7.7 157
TOWER 10500 27.8 20.4 136 27.3 17.7 154
WEBBER SPRINGS 9250 16.1 11.3 142 20.5 12.9 159
WILLOW CREEK PASS 9540 10.7 5.5 195 10.7 6.4 167
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Basin wide percent of average 154 160
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.5 10.6 137 15.9 10.0 159
CASPER MTN. 7900 5.7 6.9 83 8.5 7.2 118
DEADMAN HILL 10220 5.9 7.5 79 13.0 7.8 167
DEER PARK 9700 12.6 6.7 188 13.4 10.8 124
LAPRELE CREEK 8375 5.3 5.3 100 6.7 6.1 110
RENO HILL 8400 7.0 6.5 108 8.6 7.1 121
ROACH 9700 11.1 7.2 154 13.7 8.4 163
SAND LAKE 10050 18.5 14.7 126 17.8 11.4 156
SOUTH PASS 9040 10.1 8.1 125 8.9 9.1 98
WINDY PEAK 7900 4.2 3.5 120 6.9 5.5 125
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Basin wide percent of average 123 136
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 6.2 4.0 155 8.7 7.0 124
DIVIDE PEAK 8880 11.8 9.1 130 15.1 9.9 153
OLD BATTLE 10000 23.4 14.5 161 24.1 15.8 153
SANDSTONE RS 8150 7.3 5.1 143 14.6 8.8 166
WHISKEY PARK 8950 -M 10.9 * 21.0 13.0 162
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Basin wide percent of average 149 153
UPPER GREEN RIVER
BIG SANDY OPENING 9080 8.1 6.8 119 8.8 6.5 135
BLIND BULL SUM 8650 14.3 13.0 110 11.0 10.9 101
EAST RIM DIVIDE 7930 6.6 5.8 114 6.9 5.7 121
ELKHART PARK G.S. 9400 6.5 6.2 105 7.2 6.6 109
GROS VENTRE SUMMIT 8750 8.7 6.8 128 8.5 6.3 135
GUNSIGHT PASS 9820 9.2 -M * 9.4 -M *
KENDALL R.S. 7740 6.6 6.6 100 8.4 6.8 124
LOOMIS PARK 8240 9.6 7.9 122 10.6 8.2 129
NEW FORK LAKE 8340 6.2 5.3 117 6.0 5.8 103
POCKET CREEK 9360 6.6 -M * 8.0 -M *
SNIDER BASIN 8060 10.1 6.8 149 10.7 7.8 137
SPRING CREEK DIVIDE 9000 16.3 12.3 133 16.9 12.8 132
TRIPLE PEAK 8500 14.6 11.7 125 16.4 11.0 149
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Basin wide percent of average 121 126
LOWER GREEN RIVER
HAMS FORK 7840 7.6 5.4 141 8.5 5.7 149
HEWINTA 9519 5.4 4.0 135 9.6 6.9 139
HICKERSON PARK 9145 2.9 2.8 104 4.8 4.2 114
HOLE-IN-ROCK 9150 2.8 2.6 108 5.5 3.8 145
INDIAN CREEK 9425 16.7 12.3 136 15.8 12.0 132
KELLEY R.S. 8180 11.1 7.5 148 13.6 9.9 137
STEEL CREEK PARK 10200 8.4 6.6 127 11.6 7.5 155
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Basin wide percent of average 133 139
UPPER BEAR RIVER
BUG LAKE 7950 15.3 8.1 189 17.0 9.1 187
HAYDEN FORK 9212 11.0 6.2 177 17.1 9.9 173
KELLEY R.S. 8180 11.1 7.5 148 13.6 9.9 137
LILY LAKE 9156 10.0 5.4 185 12.6 8.6 147
MONTE CRISTO 8960 18.3 10.8 169 18.8 11.9 158
SALT RIVER SUMMIT 7760 8.2 5.3 155 12.0 8.8 136
TRIAL LAKE 9992 21.1 10.3 205 19.3 11.1 174
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Basin wide percent of average 177 159
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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.