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: FEBRUARY 15 , 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 14.7 14.4 102 17.5 16.6 105
COTTONWOOD CREEK 7670 19.3 16.0 121 26.2 20.7 127
GRAND TARGHEE 9260 35.4 -M * 25.6 -M *
GRANITE CREEK 6770 14.3 14.2 101 16.8 15.5 108
GRASSY LAKE 7265 25.5 26.2 97 28.6 27.9 103
GROS VENTRE SUMMIT 8750 11.3 10.4 109 11.2 9.6 117
GUNSIGHT PASS 9820 12.6 -M * 12.8 -M *
LEWIS LAKE DIVIDE 7850 24.2 26.4 92 25.5 28.0 91
PHILLIPS BENCH 8200 22.0 21.1 104 23.2 21.9 106
SALT RIVER SUMMIT 7760 12.1 10.8 112 16.3 14.1 116
SNAKE RIVER STATION 6920 -M 14.6 * -M 17.5 *
SPRING CREEK DIVIDE 9000 25.4 19.7 129 25.2 20.3 124
THUMB DIVIDE 7980 14.1 13.5 104 14.5 14.2 102
TOGWOTEE PASS 9580 21.6 18.8 115 23.1 18.6 124
TWO OCEAN PLATEAU 9240 24.0 21.1 114 20.2 20.8 97
WILLOW CREEK 8380 24.0 22.7 106 29.3 24.2 121
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Basin wide percent of average 107 110
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 18.7 18.2 103 18.3 15.5 118
BLACK BEAR 8170 30.8 29.1 106 30.2 29.4 103
CANYON 7870 11.6 10.1 115 13.4 11.8 114
FISHER CREEK 9100 29.2 26.6 110 28.5 27.4 104
MADISON PLATEAU 7750 19.1 18.5 103 21.1 19.7 107
NORTHEAST ENTRANCE 7350 9.8 8.8 111 11.6 9.8 118
PARKER PEAK 9400 21.1 16.4 129 19.0 12.3 154
SYLVAN LAKE 8420 17.3 16.7 104 20.6 16.3 126
THUMB DIVIDE 7980 14.1 13.5 104 14.5 14.2 102
TWO OCEAN PLATEAU 9240 24.0 21.1 114 20.2 20.8 97
WHISKEY CREEK 6800 13.3 12.7 105 16.3 15.4 106
WHITE MILL 8700 20.2 18.1 112 20.8 20.4 102
WOLVERINE 7650 11.5 9.7 119 11.1 10.2 109
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Basin wide percent of average 110 110
WIND RIVER
BURROUGHS CREEK 8750 10.8 11.3 96 11.4 12.4 92
CASTLE CREEK 8400 4.6 -M * 5.4 -M *
COLD SPRINGS 9630 6.3 6.4 98 6.4 7.7 83
DEER PARK 9700 14.5 13.7 106 15.8 16.2 98
HOBBS PARK 10100 10.0 10.7 93 9.1 9.0 101
LITTLE WARM 9370 8.6 8.5 101 9.0 9.9 91
SOUTH PASS 9040 12.2 12.5 98 10.7 13.6 79
ST. LAWRENCE ALT 8620 3.9 5.2 75 5.0 6.3 79
TOGWOTEE PASS 9580 21.6 18.8 115 23.1 18.6 124
TOWNSEND CREEK 8700 -M 6.3 * -M 8.0 *
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Basin wide percent of average 101 97
BIGHORN BASIN
BALD MTN. 9380 17.7 14.5 122 14.2 12.9 110
BEAR TRAP MEADOW 8200 6.0 3.9 154 6.5 5.9 110
BLACKWATER 9780 19.0 18.3 104 18.5 15.6 119
BONE SPRINGS DIV 9350 14.1 11.7 121 11.8 10.6 111
EVENING STAR 9200 23.4 22.3 105 26.2 19.6 134
GRAVE SPRINGS 8550 6.1 6.5 94 6.3 6.9 91
KIRWIN 9550 8.3 8.3 100 9.3 8.3 112
MARQUETTE 8760 1.9 6.3 30 5.2 6.8 76
MIDDLE POWDER 7760 7.2 8.1 89 8.9 8.9 100
OWL CREEK 8975 4.0 3.7 108 4.0 4.0 100
POWDER RIVER PASS 9480 10.5 7.9 133 12.4 9.1 136
SHELL CREEK 9580 12.5 10.7 117 11.1 10.1 110
SYLVAN LAKE 8420 17.3 16.7 104 20.6 16.3 126
SYLVAN ROAD 7120 11.5 10.2 113 15.4 14.5 106
TIMBER CREEK 7950 2.8 3.9 72 3.4 4.9 69
YOUNTS PEAK 8350 12.5 13.2 95 11.1 12.4 90
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Basin wide percent of average 105 111
SHOSHONE RIVER
BLACKWATER 9780 19.0 18.3 104 18.5 15.6 119
EVENING STAR 9200 23.4 22.3 105 26.2 19.6 134
KIRWIN 9550 8.3 8.3 100 9.3 8.3 112
MARQUETTE 8760 1.9 6.3 30 5.2 6.8 76
SYLVAN LAKE 8420 17.3 16.7 104 20.6 16.3 126
SYLVAN ROAD 7120 11.5 10.2 113 15.4 14.5 106
YOUNTS PEAK 8350 12.5 13.2 95 11.1 12.4 90
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Basin wide percent of average 99 114
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.0 3.9 154 6.5 5.9 110
BIG GOOSE 7990 5.8 6.8 85 7.5 6.2 121
BONE SPRINGS DIV 9350 14.1 11.7 121 11.8 10.6 111
BURGESS JUNCTION 7880 8.0 8.1 99 8.9 8.6 103
CLOUD PEAK RESERVOIR 9860 11.5 8.9 129 11.0 8.9 124
DOME LAKE 8880 8.5 8.7 98 9.6 9.4 102
GRAVE SPRINGS 8550 6.1 6.5 94 6.3 6.9 91
HANSEN SAWMILL 8360 4.6 4.6 100 5.2 5.7 91
LITTLE GOOSE 8870 6.4 -M * 10.6 -M *
MIDDLE POWDER 7760 7.2 8.1 89 8.9 8.9 100
POWDER RIVER PASS 9480 10.5 7.9 133 12.4 9.1 136
SOLDIER PARK 8720 4.9 -M * 6.3 -M *
SUCKER CREEK 8880 9.7 8.1 120 10.7 9.6 111
TIE CREEK 6870 5.3 4.5 118 7.6 7.3 104
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Basin wide percent of average 111 110
BELLE FOURCHE
BLIND PARK 6890 7.9 5.9 134 13.6 8.5 160
COLE CANYON 5910 6.7 5.1 131 9.5 5.1 186
NORTH RAPID CREEK 6130 7.5 5.9 127 11.6 6.9 168
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Basin wide percent of average 131 169
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 20.3 14.7 138 21.8 15.8 138
COLUMBINE 9160 25.0 19.3 130 27.0 18.6 145
DIVIDE PEAK 8880 15.7 14.1 111 19.7 15.2 130
ELK RIVER 8700 18.2 14.2 128 20.3 14.3 142
JOE WRIGHT 10120 21.6 15.5 139 27.1 18.0 151
NORTH FRENCH CREEK 10130 33.4 20.3 165 -M 18.1 *
OLD BATTLE 10000 31.0 23.0 135 27.9 25.1 111
SAGE CREEK BASIN 7850 14.9 8.2 182 13.9 8.8 158
SOUTH BRUSH CREEK 8440 13.4 8.6 156 16.8 12.1 139
TOWER 10500 40.9 33.8 121 42.1 28.5 148
WEBBER SPRINGS 9250 22.0 18.4 120 26.9 19.9 135
WILLOW CREEK PASS 9540 13.5 8.5 159 13.2 9.3 142
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Basin wide percent of average 136 138
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 22.7 17.1 133 23.6 15.7 150
CASPER MTN. 7900 8.7 10.1 86 11.0 9.9 111
DEADMAN HILL 10220 15.4 11.7 132 16.8 11.8 142
DEER PARK 9700 14.5 13.7 106 15.8 16.2 98
LAPRELE CREEK 8375 9.4 8.0 118 10.8 9.0 120
RENO HILL 8400 11.0 9.3 118 13.0 10.3 126
ROACH 9700 15.8 12.5 126 19.1 13.0 147
SAND LAKE 10050 27.3 22.2 123 25.9 17.4 149
SOUTH PASS 9040 12.2 12.5 98 10.7 13.6 79
WINDY PEAK 7900 7.5 5.3 142 9.9 7.6 130
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Basin wide percent of average 118 126
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 8.7 * 10.8 11.0 98
DIVIDE PEAK 8880 15.7 14.1 111 19.7 15.2 130
OLD BATTLE 10000 31.0 23.0 135 27.9 25.1 111
SANDSTONE RS 8150 10.7 11.1 96 -M 14.0 *
WHISKEY PARK 8950 -M 21.1 * 29.9 21.3 140
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Basin wide percent of average 119 122
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.1 10.8 94 10.5 10.1 104
BLIND BULL SUM 8650 21.5 20.6 104 15.5 17.1 91
EAST RIM DIVIDE 7930 11.0 9.7 113 9.6 9.1 105
ELKHART PARK G.S. 9400 9.3 9.9 94 9.3 9.8 95
GROS VENTRE SUMMIT 8750 11.3 10.4 109 11.2 9.6 117
GUNSIGHT PASS 9820 12.6 -M * 12.8 -M *
KENDALL R.S. 7740 9.2 11.0 84 10.9 11.0 99
LOOMIS PARK 8240 13.8 12.7 109 15.0 13.2 114
NEW FORK LAKE 8340 9.1 8.6 106 8.6 8.7 99
POCKET CREEK 9360 7.4 -M * 10.1 -M *
SNIDER BASIN 8060 14.8 11.1 133 14.9 12.3 121
SPRING CREEK DIVIDE 9000 25.4 19.7 129 25.2 20.3 124
TRIPLE PEAK 8500 22.7 18.6 122 24.5 18.3 134
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Basin wide percent of average 111 111
LOWER GREEN RIVER
HAMS FORK 7840 11.7 9.6 122 11.9 9.3 128
HEWINTA 9519 9.1 7.8 117 12.7 10.3 123
HICKERSON PARK 9145 5.1 5.1 100 6.7 5.6 120
HOLE-IN-ROCK 9150 5.9 4.9 120 7.5 5.2 144
INDIAN CREEK 9425 22.8 19.7 116 21.2 18.8 113
KELLEY R.S. 8180 15.0 12.2 123 17.9 15.4 116
STEEL CREEK PARK 10200 12.6 10.9 116 15.4 11.4 135
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Basin wide percent of average 117 123
UPPER BEAR RIVER
BUG LAKE 7950 20.2 15.1 134 21.2 14.4 147
HAYDEN FORK 9212 16.3 11.4 143 22.5 15.2 148
KELLEY R.S. 8180 15.0 12.2 123 17.9 15.4 116
LILY LAKE 9156 13.9 9.5 146 16.5 12.8 129
MONTE CRISTO 8960 24.5 21.4 114 26.0 18.8 138
SALT RIVER SUMMIT 7760 12.1 10.8 112 16.3 14.1 116
TRIAL LAKE 9992 25.6 18.0 142 26.3 18.0 146
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Basin wide percent of average 130 135
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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.