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 TUESDAY: DECEMBER 28 , 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 9.8 7.7 127 12.7 9.8 130
COTTONWOOD CREEK 7670 13.8 9.1 152 18.5 12.7 146
GRAND TARGHEE 9260 23.3 -M * 17.3 -M *
GRANITE CREEK 6770 10.3 7.1 145 12.7 9.0 141
GRASSY LAKE 7265 15.3 13.8 111 18.5 16.3 113
GROS VENTRE SUMMIT 8750 8.2 6.5 126 8.2 6.1 134
GUNSIGHT PASS 9820 8.8 -M * 9.1 -M *
LEWIS LAKE DIVIDE 7850 17.1 13.8 124 18.9 16.5 115
PHILLIPS BENCH 8200 15.6 11.9 131 17.1 12.7 135
SALT RIVER SUMMIT 7760 7.6 5.0 152 11.5 8.4 137
SNAKE RIVER STATION 6920 7.6 7.4 103 13.5 10.4 130
SPRING CREEK DIVIDE 9000 15.6 11.9 131 16.4 12.2 134
THUMB DIVIDE 7980 10.9 7.1 154 11.5 8.6 134
TOGWOTEE PASS 9580 14.5 11.0 132 15.6 11.4 137
TWO OCEAN PLATEAU 9240 18.4 12.8 144 15.0 12.8 117
WILLOW CREEK 8380 15.5 13.4 116 20.6 14.7 140
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Basin wide percent of average 130 130
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 12.1 10.9 111 11.8 9.5 124
BLACK BEAR 8170 20.2 16.1 125 21.2 16.6 128
CANYON 7870 7.7 5.6 138 9.2 7.4 124
FISHER CREEK 9100 17.7 15.4 115 17.6 16.1 109
MADISON PLATEAU 7750 13.1 10.5 125 15.1 11.8 128
NORTHEAST ENTRANCE 7350 5.5 4.6 120 7.6 6.1 125
PARKER PEAK 9400 13.4 10.0 134 13.9 7.9 176
SYLVAN LAKE 8420 11.2 9.9 113 14.1 10.6 133
THUMB DIVIDE 7980 10.9 7.1 154 11.5 8.6 134
TWO OCEAN PLATEAU 9240 18.4 12.8 144 15.0 12.8 117
WHISKEY CREEK 6800 8.9 6.9 129 11.4 9.4 121
WHITE MILL 8700 12.4 10.6 117 13.6 12.2 111
WOLVERINE 7650 7.0 5.4 130 7.2 6.7 107
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Basin wide percent of average 126 125
WIND RIVER
BURROUGHS CREEK 8750 7.6 6.4 119 8.1 7.6 107
CASTLE CREEK 8400 3.3 -M * 4.0 -M *
COLD SPRINGS 9630 4.5 4.5 100 4.5 5.5 82
DEER PARK 9700 11.4 6.2 184 12.3 10.5 117
HOBBS PARK 10100 7.9 7.4 107 7.1 6.2 115
LITTLE WARM 9370 6.2 5.1 122 6.5 6.4 102
SOUTH PASS 9040 9.1 7.8 117 8.3 8.8 94
ST. LAWRENCE ALT 8620 2.8 3.7 76 3.6 4.5 80
TOGWOTEE PASS 9580 14.5 11.0 132 15.6 11.4 137
TOWNSEND CREEK 8700 4.2 4.3 98 6.1 5.8 105
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Basin wide percent of average 121 108
BIGHORN BASIN
BALD MTN. 9380 9.8 9.3 105 9.0 8.1 111
BEAR TRAP MEADOW 8200 2.8 2.5 112 3.9 4.4 89
BLACKWATER 9780 13.6 11.4 119 12.8 10.4 123
BONE SPRINGS DIV 9350 7.3 7.5 97 7.0 7.0 100
EVENING STAR 9200 15.6 12.9 121 16.8 12.4 135
GRAVE SPRINGS 8550 3.4 3.8 89 4.0 4.7 85
KIRWIN 9550 6.5 5.7 114 7.0 5.7 123
MARQUETTE 8760 1.3 4.8 27 3.2 5.2 62
MIDDLE POWDER 7760 4.8 5.3 91 3.3 6.6 50
OWL CREEK 8975 2.1 2.6 81 2.5 2.8 89
POWDER RIVER PASS 9480 6.1 5.0 122 7.0 5.7 123
SHELL CREEK 9580 6.9 7.0 99 5.9 6.4 92
SYLVAN LAKE 8420 11.2 9.9 113 14.1 10.6 133
SYLVAN ROAD 7120 7.8 5.8 134 10.6 9.8 108
TIMBER CREEK 7950 1.9 3.0 63 2.4 3.6 67
YOUNTS PEAK 8350 9.0 7.4 122 8.3 7.8 106
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Basin wide percent of average 106 106
SHOSHONE RIVER
BLACKWATER 9780 13.6 11.4 119 12.8 10.4 123
EVENING STAR 9200 15.6 12.9 121 16.8 12.4 135
KIRWIN 9550 6.5 5.7 114 7.0 5.7 123
MARQUETTE 8760 1.3 4.8 27 3.2 5.2 62
SYLVAN LAKE 8420 11.2 9.9 113 14.1 10.6 133
SYLVAN ROAD 7120 7.8 5.8 134 10.6 9.8 108
YOUNTS PEAK 8350 9.0 7.4 122 8.3 7.8 106
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Basin wide percent of average 112 118
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.8 2.5 112 3.9 4.4 89
BIG GOOSE 7990 2.4 4.2 57 4.2 4.4 95
BONE SPRINGS DIV 9350 7.3 7.5 97 7.0 7.0 100
BURGESS JUNCTION 7880 3.3 5.3 62 4.8 5.9 81
CLOUD PEAK RESERVOIR 9860 6.4 5.5 116 7.0 6.2 113
DOME LAKE 8880 3.3 5.8 57 5.5 6.7 82
GRAVE SPRINGS 8550 3.4 3.8 89 4.0 4.7 85
HANSEN SAWMILL 8360 2.5 3.1 81 3.1 4.2 74
LITTLE GOOSE 8870 3.1 -M * 6.9 -M *
MIDDLE POWDER 7760 4.8 5.3 91 3.3 6.6 50
POWDER RIVER PASS 9480 6.1 5.0 122 7.0 5.7 123
SOLDIER PARK 8720 1.9 -M * 3.6 -M *
SUCKER CREEK 8880 4.8 5.0 96 5.5 6.4 86
TIE CREEK 6870 2.0 2.4 83 3.8 4.9 78
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Basin wide percent of average 89 88
BELLE FOURCHE
BLIND PARK 6890 2.6 3.3 79 7.9 6.0 132
COLE CANYON 5910 2.6 3.2 81 5.1 3.8 134
NORTH RAPID CREEK 6130 2.7 3.1 87 6.7 5.1 131
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Basin wide percent of average 82 132
UPPER N. PLATTE RIVER
COLUMBINE 9160 14.5 9.3 156 17.7 10.8 164
DIVIDE PEAK 8880 10.9 8.6 127 14.4 9.5 152
ELK RIVER 8700 10.3 6.6 156 13.3 8.4 158
JOE WRIGHT 10120 14.3 9.2 155 19.1 11.4 168
NORTH FRENCH CREEK 10130 20.4 12.7 161 20.2 11.4 177
OLD BATTLE 10000 21.7 14.0 155 23.0 15.1 152
SAGE CREEK BASIN 7850 6.9 5.0 138 10.0 5.5 182
SOUTH BRUSH CREEK 8440 9.0 4.8 188 12.3 7.4 166
TOWER 10500 26.6 19.6 136 27.2 16.9 161
WEBBER SPRINGS 9250 14.8 10.9 136 19.2 12.4 155
WILLOW CREEK PASS 9540 9.9 5.3 187 10.4 6.2 168
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Basin wide percent of average 150 162
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.2 10.1 141 15.7 9.6 164
CASPER MTN. 7900 5.0 6.7 75 7.9 7.0 113
DEADMAN HILL 10220 5.9 7.3 81 13.3 7.5 177
DEER PARK 9700 11.4 6.2 184 12.3 10.5 117
LAPRELE CREEK 8375 5.1 5.1 100 6.4 5.9 108
RENO HILL 8400 6.4 6.3 102 8.2 6.9 119
ROACH 9700 11.0 6.9 159 13.7 8.0 171
SAND LAKE 10050 18.3 14.2 129 17.7 11.0 161
SOUTH PASS 9040 9.1 7.8 117 8.3 8.8 94
WINDY PEAK 7900 3.9 3.4 115 6.4 5.3 121
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Basin wide percent of average 122 137
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.8 3.7 157 8.1 6.8 119
DIVIDE PEAK 8880 10.9 8.6 127 14.4 9.5 152
OLD BATTLE 10000 21.7 14.0 155 23.0 15.1 152
SANDSTONE RS 8150 6.1 4.8 127 13.0 8.4 155
WHISKEY PARK 8950 -M 10.3 * 20.0 12.4 161
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Basin wide percent of average 143 150
UPPER GREEN RIVER
BIG SANDY OPENING 9080 7.3 6.6 111 8.0 6.3 127
BLIND BULL SUM 8650 13.6 12.4 110 10.4 10.5 99
EAST RIM DIVIDE 7930 6.1 5.6 109 6.5 5.4 120
ELKHART PARK G.S. 9400 6.0 6.0 100 6.7 6.4 105
GROS VENTRE SUMMIT 8750 8.2 6.5 126 8.2 6.1 134
GUNSIGHT PASS 9820 8.8 -M * 9.1 -M *
KENDALL R.S. 7740 6.3 6.2 102 8.1 6.5 125
LOOMIS PARK 8240 9.2 7.6 121 10.2 7.9 129
NEW FORK LAKE 8340 5.8 5.1 114 5.7 5.6 102
POCKET CREEK 9360 6.1 -M * 7.4 -M *
SNIDER BASIN 8060 9.6 6.5 148 10.2 7.5 136
SPRING CREEK DIVIDE 9000 15.6 11.9 131 16.4 12.2 134
TRIPLE PEAK 8500 14.1 11.2 126 16.0 10.5 152
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Basin wide percent of average 119 125
LOWER GREEN RIVER
HAMS FORK 7840 -M 5.1 * -M 5.5 *
HEWINTA 9519 5.3 3.8 139 9.4 6.8 138
HICKERSON PARK 9145 2.5 2.7 93 4.4 4.1 107
HOLE-IN-ROCK 9150 2.6 2.5 104 5.2 3.8 137
INDIAN CREEK 9425 15.6 11.8 132 14.8 11.5 129
KELLEY R.S. 8180 10.0 7.2 139 12.6 9.5 133
STEEL CREEK PARK 10200 8.2 6.3 130 11.3 7.2 157
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Basin wide percent of average 129 134
UPPER BEAR RIVER
BUG LAKE 7950 13.9 7.7 181 16.3 8.7 187
HAYDEN FORK 9212 10.1 5.8 174 17.1 9.5 180
KELLEY R.S. 8180 10.0 7.2 139 12.6 9.5 133
LILY LAKE 9156 9.4 5.1 184 12.6 8.3 152
MONTE CRISTO 8960 17.0 10.2 167 18.9 11.5 164
SALT RIVER SUMMIT 7760 7.6 5.0 152 11.5 8.4 137
TRIAL LAKE 9992 19.3 9.8 197 19.1 10.6 180
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Basin wide percent of average 172 163
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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.