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 WEDNESDAY: FEBRUARY 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 13.8 12.8 108 17.0 15.0 113
COTTONWOOD CREEK 7670 18.3 14.4 127 24.1 18.8 128
GRAND TARGHEE 9260 33.2 -M * 24.0 -M *
GRANITE CREEK 6770 13.5 12.5 108 15.8 13.9 114
GRASSY LAKE 7265 24.2 23.2 104 26.8 25.3 106
GROS VENTRE SUMMIT 8750 10.0 9.5 105 9.6 8.7 110
GUNSIGHT PASS 9820 11.4 -M * 11.5 -M *
LEWIS LAKE DIVIDE 7850 23.6 23.3 101 23.9 25.1 95
PHILLIPS BENCH 8200 20.6 18.7 110 21.7 19.7 110
SALT RIVER SUMMIT 7760 11.1 9.4 118 14.9 12.7 117
SNAKE RIVER STATION 6920 12.8 12.8 100 17.9 15.7 114
SPRING CREEK DIVIDE 9000 23.8 17.5 136 23.1 18.5 125
THUMB DIVIDE 7980 13.3 11.9 112 14.0 12.8 109
TOGWOTEE PASS 9580 19.8 17.0 116 21.1 17.0 124
TWO OCEAN PLATEAU 9240 22.8 19.1 119 18.6 18.6 100
WILLOW CREEK 8380 23.0 20.4 113 27.9 22.0 127
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Basin wide percent of average 113 113
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 17.3 16.3 106 16.9 14.1 120
BLACK BEAR 8170 29.3 25.8 114 29.0 26.4 110
CANYON 7870 11.1 9.0 123 12.4 10.9 114
FISHER CREEK 9100 26.5 24.0 110 25.6 24.8 103
MADISON PLATEAU 7750 18.4 16.3 113 20.2 17.7 114
NORTHEAST ENTRANCE 7350 8.8 7.8 113 10.7 9.0 119
PARKER PEAK 9400 19.6 14.9 132 18.1 11.2 162
SYLVAN LAKE 8420 16.1 15.3 105 19.4 14.9 130
THUMB DIVIDE 7980 13.3 11.9 112 14.0 12.8 109
TWO OCEAN PLATEAU 9240 22.8 19.1 119 18.6 18.6 100
WHISKEY CREEK 6800 13.2 11.2 118 15.6 13.9 112
WHITE MILL 8700 18.3 16.2 113 19.1 18.4 104
WOLVERINE 7650 11.5 8.7 132 10.4 9.3 112
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Basin wide percent of average 115 114
WIND RIVER
BURROUGHS CREEK 8750 10.1 10.2 99 10.6 11.4 93
CASTLE CREEK 8400 4.3 -M * 5.0 -M *
COLD SPRINGS 9630 5.9 6.0 98 5.8 7.1 82
DEER PARK 9700 14.1 11.7 121 15.3 14.7 104
HOBBS PARK 10100 9.6 9.9 97 8.7 8.3 105
LITTLE WARM 9370 8.1 7.8 104 8.5 9.2 92
SOUTH PASS 9040 11.6 11.4 102 10.2 12.3 83
ST. LAWRENCE ALT 8620 3.8 4.8 79 4.6 5.7 81
TOGWOTEE PASS 9580 19.8 17.0 116 21.1 17.0 124
TOWNSEND CREEK 8700 -M 5.6 * -M 7.4 *
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Basin wide percent of average 105 99
BIGHORN BASIN
BALD MTN. 9380 16.0 13.6 118 13.4 11.9 113
BEAR TRAP MEADOW 8200 5.5 3.6 153 5.9 5.5 107
BLACKWATER 9780 17.9 16.7 107 17.4 14.3 122
BONE SPRINGS DIV 9350 12.9 10.7 121 11.1 9.7 114
EVENING STAR 9200 22.5 19.9 113 24.9 17.7 141
GRAVE SPRINGS 8550 5.1 5.8 88 5.4 6.4 84
KIRWIN 9550 7.9 7.7 103 8.7 7.7 113
MARQUETTE 8760 2.0 5.9 34 4.6 6.2 74
MIDDLE POWDER 7760 6.5 7.2 90 4.4 8.3 53
OWL CREEK 8975 3.3 3.4 97 3.4 3.7 92
POWDER RIVER PASS 9480 10.1 7.3 138 11.7 8.4 139
SHELL CREEK 9580 11.7 10.0 117 10.6 9.4 113
SYLVAN LAKE 8420 16.1 15.3 105 19.4 14.9 130
SYLVAN ROAD 7120 10.8 8.9 121 14.3 13.4 107
TIMBER CREEK 7950 2.7 3.7 73 3.2 4.5 71
YOUNTS PEAK 8350 11.8 12.1 98 10.5 11.5 91
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Basin wide percent of average 107 110
SHOSHONE RIVER
BLACKWATER 9780 17.9 16.7 107 17.4 14.3 122
EVENING STAR 9200 22.5 19.9 113 24.9 17.7 141
KIRWIN 9550 7.9 7.7 103 8.7 7.7 113
MARQUETTE 8760 2.0 5.9 34 4.6 6.2 74
SYLVAN LAKE 8420 16.1 15.3 105 19.4 14.9 130
SYLVAN ROAD 7120 10.8 8.9 121 14.3 13.4 107
YOUNTS PEAK 8350 11.8 12.1 98 10.5 11.5 91
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Basin wide percent of average 103 116
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.5 3.6 153 5.9 5.5 107
BIG GOOSE 7990 5.2 6.1 85 6.2 5.7 109
BONE SPRINGS DIV 9350 12.9 10.7 121 11.1 9.7 114
BURGESS JUNCTION 7880 6.7 7.5 89 7.8 8.0 98
CLOUD PEAK RESERVOIR 9860 10.2 8.1 126 9.9 8.3 119
DOME LAKE 8880 7.4 8.0 93 8.8 8.8 100
GRAVE SPRINGS 8550 5.1 5.8 88 5.4 6.4 84
HANSEN SAWMILL 8360 4.7 4.2 112 5.0 5.3 94
LITTLE GOOSE 8870 6.0 -M * 9.9 -M *
MIDDLE POWDER 7760 6.5 7.2 90 4.4 8.3 53
POWDER RIVER PASS 9480 10.1 7.3 138 11.7 8.4 139
SOLDIER PARK 8720 4.5 -M * 5.9 -M *
SUCKER CREEK 8880 8.6 7.3 118 9.4 8.9 106
TIE CREEK 6870 4.3 4.0 108 6.4 6.8 94
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Basin wide percent of average 109 102
BELLE FOURCHE
BLIND PARK 6890 6.0 5.3 113 11.9 7.9 151
COLE CANYON 5910 5.6 4.6 122 8.3 4.7 177
NORTH RAPID CREEK 6130 5.8 5.1 114 9.6 6.4 150
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Basin wide percent of average 116 157
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 18.0 13.3 135 21.2 14.4 147
COLUMBINE 9160 21.7 16.7 130 23.3 16.8 139
DIVIDE PEAK 8880 14.3 13.1 109 17.9 13.8 130
ELK RIVER 8700 16.0 12.4 129 17.8 12.8 139
JOE WRIGHT 10120 17.9 14.0 128 22.9 16.3 140
NORTH FRENCH CREEK 10130 29.5 18.5 159 27.8 16.5 168
OLD BATTLE 10000 28.7 20.2 142 26.2 22.6 116
SAGE CREEK BASIN 7850 13.4 7.6 176 13.2 8.0 165
SOUTH BRUSH CREEK 8440 11.7 7.5 156 14.5 10.9 133
TOWER 10500 37.3 30.3 123 35.1 25.6 137
WEBBER SPRINGS 9250 20.1 16.2 124 24.5 18.2 135
WILLOW CREEK PASS 9540 12.4 7.6 163 12.0 8.4 143
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Basin wide percent of average 136 139
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 20.2 15.5 130 21.6 14.4 150
CASPER MTN. 7900 7.6 9.1 84 10.3 9.0 114
DEADMAN HILL 10220 -M 10.7 * -M 10.7 *
DEER PARK 9700 14.1 11.7 121 15.3 14.7 104
LAPRELE CREEK 8375 7.9 7.3 108 9.1 8.2 111
RENO HILL 8400 9.3 8.5 109 10.7 9.4 114
ROACH 9700 13.6 11.1 123 16.1 11.7 138
SAND LAKE 10050 24.1 20.1 120 22.6 16.0 141
SOUTH PASS 9040 11.6 11.4 102 10.2 12.3 83
WINDY PEAK 7900 6.3 4.6 137 9.1 7.0 130
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Basin wide percent of average 116 122
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 7.9 * 10.1 10.0 101
DIVIDE PEAK 8880 14.3 13.1 109 17.9 13.8 130
OLD BATTLE 10000 28.7 20.2 142 26.2 22.6 116
SANDSTONE RS 8150 -M 9.8 * -M 12.6 *
WHISKEY PARK 8950 -M 18.7 * 27.0 19.5 138
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Basin wide percent of average 129* 123
UPPER GREEN RIVER
BIG SANDY OPENING 9080 9.2 9.6 96 9.8 9.1 108
BLIND BULL SUM 8650 19.9 18.6 107 14.3 15.5 92
EAST RIM DIVIDE 7930 9.6 8.6 112 9.5 8.2 116
ELKHART PARK G.S. 9400 8.3 8.9 93 8.6 9.0 96
GROS VENTRE SUMMIT 8750 10.0 9.5 105 9.6 8.7 110
GUNSIGHT PASS 9820 11.4 -M * 11.5 -M *
KENDALL R.S. 7740 8.3 9.9 84 10.3 9.8 105
LOOMIS PARK 8240 12.6 11.3 112 13.3 11.9 112
NEW FORK LAKE 8340 8.0 7.7 104 7.6 7.9 96
POCKET CREEK 9360 6.9 -M * 9.6 -M *
SNIDER BASIN 8060 13.8 9.9 139 13.6 11.2 121
SPRING CREEK DIVIDE 9000 23.8 17.5 136 23.1 18.5 125
TRIPLE PEAK 8500 21.2 16.8 126 22.2 16.3 136
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Basin wide percent of average 113 113
LOWER GREEN RIVER
HAMS FORK 7840 10.8 8.5 127 11.3 8.4 135
HEWINTA 9519 7.4 6.8 109 11.2 9.4 119
HICKERSON PARK 9145 3.2 4.5 71 5.0 5.2 96
HOLE-IN-ROCK 9150 4.6 4.2 110 6.2 4.8 129
INDIAN CREEK 9425 21.7 17.7 123 19.8 16.9 117
KELLEY R.S. 8180 14.2 10.8 131 17.3 14.0 124
STEEL CREEK PARK 10200 10.7 9.5 113 14.0 10.2 137
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Basin wide percent of average 117 123
UPPER BEAR RIVER
BUG LAKE 7950 18.5 13.3 139 20.0 13.0 154
HAYDEN FORK 9212 14.0 9.9 141 20.9 13.7 153
KELLEY R.S. 8180 14.2 10.8 131 17.3 14.0 124
LILY LAKE 9156 12.5 8.3 151 15.3 11.6 132
MONTE CRISTO 8960 22.9 18.4 124 24.5 16.9 145
SALT RIVER SUMMIT 7760 11.1 9.4 118 14.9 12.7 117
TRIAL LAKE 9992 23.7 15.8 150 24.5 16.0 153
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Basin wide percent of average 136 140
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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.