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 SUNDAY: JANUARY 2 , 2011
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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 10.2 8.4 121 13.4 10.6 126
COTTONWOOD CREEK 7670 14.3 9.9 144 18.9 13.7 138
GRAND TARGHEE 9260 24.3 -M * 17.7 -M *
GRANITE CREEK 6770 10.8 7.8 138 13.2 9.7 136
GRASSY LAKE 7265 16.4 15.0 109 19.4 17.6 110
GROS VENTRE SUMMIT 8750 8.6 7.0 123 8.4 6.5 129
GUNSIGHT PASS 9820 9.1 -M * 9.5 -M *
LEWIS LAKE DIVIDE 7850 18.7 15.0 125 19.6 17.8 110
PHILLIPS BENCH 8200 16.5 12.8 129 17.9 13.7 131
SALT RIVER SUMMIT 7760 8.1 5.5 147 11.9 9.1 131
SNAKE RIVER STATION 6920 7.6 8.0 95 14.1 11.2 126
SPRING CREEK DIVIDE 9000 16.3 12.7 128 16.9 13.2 128
THUMB DIVIDE 7980 11.7 7.8 150 12.2 9.2 133
TOGWOTEE PASS 9580 14.8 11.8 125 16.0 12.2 131
TWO OCEAN PLATEAU 9240 18.9 13.6 139 14.9 13.7 109
WILLOW CREEK 8380 16.6 14.5 114 21.6 15.8 137
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Basin wide percent of average 127 126
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 12.3 11.6 106 12.0 10.1 119
BLACK BEAR 8170 22.7 17.4 130 23.4 17.9 131
CANYON 7870 8.6 6.2 139 9.8 7.9 124
FISHER CREEK 9100 18.6 16.5 113 18.3 17.4 105
MADISON PLATEAU 7750 14.9 11.4 131 16.5 12.6 131
NORTHEAST ENTRANCE 7350 5.9 5.0 118 7.9 6.5 122
PARKER PEAK 9400 13.7 10.7 128 14.0 8.3 169
SYLVAN LAKE 8420 11.7 10.7 109 14.8 11.1 133
THUMB DIVIDE 7980 11.7 7.8 150 12.2 9.2 133
TWO OCEAN PLATEAU 9240 18.9 13.6 139 14.9 13.7 109
WHISKEY CREEK 6800 10.2 7.6 134 12.7 10.0 127
WHITE MILL 8700 13.1 11.3 116 13.9 13.0 107
WOLVERINE 7650 7.6 5.9 129 7.3 7.1 103
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Basin wide percent of average 125 123
WIND RIVER
BURROUGHS CREEK 8750 7.8 6.8 115 8.1 8.1 100
CASTLE CREEK 8400 3.5 -M * 4.0 -M *
COLD SPRINGS 9630 4.9 4.7 104 5.0 5.7 88
DEER PARK 9700 12.6 6.7 188 13.6 11.0 124
HOBBS PARK 10100 8.5 7.7 110 7.6 6.5 117
LITTLE WARM 9370 6.5 5.4 120 6.5 6.8 96
SOUTH PASS 9040 10.2 8.2 124 9.1 9.3 98
ST. LAWRENCE ALT 8620 3.0 3.8 79 4.1 4.6 89
TOGWOTEE PASS 9580 14.8 11.8 125 16.0 12.2 131
TOWNSEND CREEK 8700 4.6 4.4 105 6.7 6.0 112
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Basin wide percent of average 123 109
BIGHORN BASIN
BALD MTN. 9380 10.2 9.8 104 9.1 8.6 106
BEAR TRAP MEADOW 8200 3.4 2.6 131 4.3 4.5 96
BLACKWATER 9780 14.1 12.2 116 13.2 10.9 121
BONE SPRINGS DIV 9350 7.9 7.9 100 7.1 7.4 96
EVENING STAR 9200 15.9 13.9 114 17.1 13.2 130
GRAVE SPRINGS 8550 3.6 4.1 88 4.3 4.9 88
KIRWIN 9550 6.8 6.0 113 7.2 6.0 120
MARQUETTE 8760 1.7 5.0 34 2.2 5.3 42
MIDDLE POWDER 7760 5.0 5.5 91 3.3 6.9 48
OWL CREEK 8975 2.4 2.7 89 2.7 2.9 93
POWDER RIVER PASS 9480 6.4 5.3 121 7.1 6.1 116
SHELL CREEK 9580 7.2 7.4 97 6.4 6.8 94
SYLVAN LAKE 8420 11.7 10.7 109 14.8 11.1 133
SYLVAN ROAD 7120 8.0 6.3 127 10.9 10.2 107
TIMBER CREEK 7950 2.2 3.0 73 2.6 3.7 70
YOUNTS PEAK 8350 9.3 8.1 115 8.4 8.3 101
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Basin wide percent of average 105 103
SHOSHONE RIVER
BLACKWATER 9780 14.1 12.2 116 13.2 10.9 121
EVENING STAR 9200 15.9 13.9 114 17.1 13.2 130
KIRWIN 9550 6.8 6.0 113 7.2 6.0 120
MARQUETTE 8760 1.7 5.0 34 2.2 5.3 42
SYLVAN LAKE 8420 11.7 10.7 109 14.8 11.1 133
SYLVAN ROAD 7120 8.0 6.3 127 10.9 10.2 107
YOUNTS PEAK 8350 9.3 8.1 115 8.4 8.3 101
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Basin wide percent of average 109 114
POWDER-TONGUE
BEAR TRAP MEADOW 8200 3.4 2.6 131 4.3 4.5 96
BIG GOOSE 7990 2.8 4.5 62 4.5 4.5 100
BONE SPRINGS DIV 9350 7.9 7.9 100 7.1 7.4 96
BURGESS JUNCTION 7880 3.7 5.6 66 4.9 6.2 79
CLOUD PEAK RESERVOIR 9860 6.9 5.8 119 7.1 6.5 109
DOME LAKE 8880 3.7 6.1 61 5.9 7.0 84
GRAVE SPRINGS 8550 3.6 4.1 88 4.3 4.9 88
HANSEN SAWMILL 8360 2.9 3.3 88 3.6 4.3 84
LITTLE GOOSE 8870 3.5 -M * 7.1 -M *
MIDDLE POWDER 7760 5.0 5.5 91 3.3 6.9 48
POWDER RIVER PASS 9480 6.4 5.3 121 7.1 6.1 116
SOLDIER PARK 8720 2.7 -M * 4.3 -M *
SUCKER CREEK 8880 5.1 5.3 96 5.9 6.8 87
TIE CREEK 6870 2.2 2.5 88 4.0 5.2 77
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Basin wide percent of average 92 88
BELLE FOURCHE
BLIND PARK 6890 2.7 3.6 75 8.2 6.3 130
COLE CANYON 5910 2.8 3.4 82 5.6 3.9 144
NORTH RAPID CREEK 6130 3.2 3.4 94 7.0 5.3 132
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Basin wide percent of average 84 134
UPPER N. PLATTE RIVER
COLUMBINE 9160 15.3 10.2 150 17.7 11.7 151
DIVIDE PEAK 8880 11.8 9.3 127 15.1 10.2 148
ELK RIVER 8700 11.9 7.4 161 14.4 9.0 160
JOE WRIGHT 10120 14.3 9.8 146 19.1 12.1 158
NORTH FRENCH CREEK 10130 20.9 13.5 155 20.4 12.2 167
OLD BATTLE 10000 23.3 14.8 157 24.0 16.2 148
SAGE CREEK BASIN 7850 10.3 5.4 191 11.2 5.9 190
SOUTH BRUSH CREEK 8440 9.3 5.2 179 12.1 7.9 153
TOWER 10500 27.5 20.9 132 27.1 18.1 150
WEBBER SPRINGS 9250 16.1 11.6 139 20.5 13.2 155
WILLOW CREEK PASS 9540 10.7 5.6 191 10.8 6.5 166
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Basin wide percent of average 151 156
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.6 10.9 134 16.1 10.3 156
CASPER MTN. 7900 5.9 7.0 84 8.8 7.3 121
DEADMAN HILL 10220 6.1 7.7 79 13.1 8.0 164
DEER PARK 9700 12.6 6.7 188 13.6 11.0 124
LAPRELE CREEK 8375 5.5 5.4 102 6.9 6.2 111
RENO HILL 8400 7.2 6.6 109 8.9 7.2 124
ROACH 9700 11.2 7.4 151 13.9 8.6 162
SAND LAKE 10050 18.7 15.1 124 17.9 11.7 153
SOUTH PASS 9040 10.2 8.2 124 9.1 9.3 98
WINDY PEAK 7900 4.4 3.5 126 7.1 5.6 127
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Basin wide percent of average 123 135
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 6.3 4.2 150 8.7 7.2 121
DIVIDE PEAK 8880 11.8 9.3 127 15.1 10.2 148
OLD BATTLE 10000 23.3 14.8 157 24.0 16.2 148
SANDSTONE RS 8150 7.4 5.4 137 14.8 9.0 164
WHISKEY PARK 8950 -M 11.3 * 21.2 13.4 158
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Basin wide percent of average 145 150
UPPER GREEN RIVER
BIG SANDY OPENING 9080 8.0 7.0 114 8.7 6.6 132
BLIND BULL SUM 8650 14.3 13.4 107 10.9 11.2 97
EAST RIM DIVIDE 7930 6.9 6.0 115 6.8 5.8 117
ELKHART PARK G.S. 9400 6.4 6.4 100 7.2 6.8 106
GROS VENTRE SUMMIT 8750 8.6 7.0 123 8.4 6.5 129
GUNSIGHT PASS 9820 9.1 -M * 9.5 -M *
KENDALL R.S. 7740 6.4 6.8 94 8.5 7.0 121
LOOMIS PARK 8240 9.5 8.1 117 10.5 8.5 124
NEW FORK LAKE 8340 6.1 5.5 111 6.1 6.0 102
POCKET CREEK 9360 6.6 -M * 8.1 -M *
SNIDER BASIN 8060 10.1 7.0 144 10.6 8.1 131
SPRING CREEK DIVIDE 9000 16.3 12.7 128 16.9 13.2 128
TRIPLE PEAK 8500 14.6 12.0 122 16.5 11.4 145
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Basin wide percent of average 117 122
LOWER GREEN RIVER
HAMS FORK 7840 7.5 5.6 134 8.6 5.9 146
HEWINTA 9519 5.3 4.2 126 9.7 7.1 137
HICKERSON PARK 9145 2.9 2.9 100 4.8 4.2 114
HOLE-IN-ROCK 9150 3.1 2.7 115 5.5 3.9 141
INDIAN CREEK 9425 16.7 12.7 131 15.8 12.3 128
KELLEY R.S. 8180 11.0 7.7 143 13.3 10.2 130
STEEL CREEK PARK 10200 8.5 6.8 125 11.7 7.6 154
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Basin wide percent of average 129 136
UPPER BEAR RIVER
BUG LAKE 7950 15.4 8.5 181 17.0 9.3 183
HAYDEN FORK 9212 10.9 6.4 170 17.3 10.1 171
KELLEY R.S. 8180 11.0 7.7 143 13.3 10.2 130
LILY LAKE 9156 9.9 5.6 177 13.1 8.7 151
MONTE CRISTO 8960 18.5 11.3 164 19.0 12.2 156
SALT RIVER SUMMIT 7760 8.1 5.5 147 11.9 9.1 131
TRIAL LAKE 9992 21.1 10.6 199 19.4 11.4 170
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Basin wide percent of average 171 156
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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.