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 THURSDAY: FEBRUARY 3 , 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 13.0 106 17.0 15.1 113
COTTONWOOD CREEK 7670 18.2 14.5 126 24.2 19.0 127
GRAND TARGHEE 9260 33.5 -M * 24.4 -M *
GRANITE CREEK 6770 13.5 12.6 107 15.7 14.0 112
GRASSY LAKE 7265 24.3 23.5 103 26.9 25.5 105
GROS VENTRE SUMMIT 8750 10.1 9.6 105 9.8 8.8 111
GUNSIGHT PASS 9820 11.5 -M * 11.7 -M *
LEWIS LAKE DIVIDE 7850 23.8 23.6 101 24.1 25.3 95
PHILLIPS BENCH 8200 20.7 18.9 110 21.8 19.9 110
SALT RIVER SUMMIT 7760 11.1 9.5 117 15.2 12.8 119
SNAKE RIVER STATION 6920 -M 12.9 * -M 15.8 *
SPRING CREEK DIVIDE 9000 23.9 17.7 135 23.3 18.6 125
THUMB DIVIDE 7980 13.5 12.0 113 13.6 12.9 105
TOGWOTEE PASS 9580 19.9 17.2 116 21.3 17.1 125
TWO OCEAN PLATEAU 9240 22.8 19.3 118 18.8 18.8 100
WILLOW CREEK 8380 22.9 20.6 111 28.0 22.1 127
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Basin wide percent of average 113 113
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 17.3 16.4 105 16.9 14.2 119
BLACK BEAR 8170 29.2 26.0 112 29.0 26.6 109
CANYON 7870 11.0 9.1 121 12.4 11.0 113
FISHER CREEK 9100 26.5 24.1 110 25.6 25.0 102
MADISON PLATEAU 7750 18.4 16.4 112 20.2 17.8 113
NORTHEAST ENTRANCE 7350 8.8 7.9 111 10.7 9.0 119
PARKER PEAK 9400 19.6 15.0 131 18.1 11.3 160
SYLVAN LAKE 8420 16.1 15.4 105 19.4 15.0 129
THUMB DIVIDE 7980 13.5 12.0 113 13.6 12.9 105
TWO OCEAN PLATEAU 9240 22.8 19.3 118 18.8 18.8 100
WHISKEY CREEK 6800 13.2 11.3 117 15.6 14.0 111
WHITE MILL 8700 18.3 16.3 112 19.1 18.6 103
WOLVERINE 7650 11.4 8.8 130 10.4 9.3 112
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Basin wide percent of average 114 113
WIND RIVER
BURROUGHS CREEK 8750 10.1 10.2 99 10.6 11.5 92
CASTLE CREEK 8400 4.3 -M * 5.0 -M *
COLD SPRINGS 9630 5.8 6.0 97 5.9 7.2 82
DEER PARK 9700 14.1 11.6 122 15.3 14.8 103
HOBBS PARK 10100 9.5 9.9 96 8.6 8.3 104
LITTLE WARM 9370 8.1 7.8 104 8.5 9.2 92
SOUTH PASS 9040 11.6 11.4 102 10.2 12.4 82
ST. LAWRENCE ALT 8620 3.8 4.8 79 4.6 5.8 79
TOGWOTEE PASS 9580 19.9 17.2 116 21.3 17.1 125
TOWNSEND CREEK 8700 -M 5.6 * -M 7.4 *
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Basin wide percent of average 105 98
BIGHORN BASIN
BALD MTN. 9380 16.0 13.6 118 13.4 12.0 112
BEAR TRAP MEADOW 8200 5.5 3.6 153 6.0 5.6 107
BLACKWATER 9780 17.9 16.7 107 17.4 14.4 121
BONE SPRINGS DIV 9350 12.9 10.7 121 11.1 9.7 114
EVENING STAR 9200 22.5 20.0 113 24.9 17.9 139
GRAVE SPRINGS 8550 5.1 5.9 86 5.4 6.5 83
KIRWIN 9550 7.9 7.7 103 8.7 7.7 113
MARQUETTE 8760 2.0 5.9 34 4.6 6.3 73
MIDDLE POWDER 7760 6.5 7.4 88 4.4 8.4 52
OWL CREEK 8975 3.3 3.4 97 3.4 3.7 92
POWDER RIVER PASS 9480 10.0 7.4 135 11.7 8.4 139
SHELL CREEK 9580 11.7 10.0 117 10.5 9.4 112
SYLVAN LAKE 8420 16.1 15.4 105 19.4 15.0 129
SYLVAN ROAD 7120 10.8 8.9 121 14.3 13.5 106
TIMBER CREEK 7950 2.7 3.7 73 3.2 4.6 70
YOUNTS PEAK 8350 11.8 12.1 98 10.5 11.5 91
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Basin wide percent of average 107 109
SHOSHONE RIVER
BLACKWATER 9780 17.9 16.7 107 17.4 14.4 121
EVENING STAR 9200 22.5 20.0 113 24.9 17.9 139
KIRWIN 9550 7.9 7.7 103 8.7 7.7 113
MARQUETTE 8760 2.0 5.9 34 4.6 6.3 73
SYLVAN LAKE 8420 16.1 15.4 105 19.4 15.0 129
SYLVAN ROAD 7120 10.8 8.9 121 14.3 13.5 106
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 6.0 5.6 107
BIG GOOSE 7990 5.2 6.1 85 6.7 5.8 116
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 8.2 124 9.9 8.3 119
DOME LAKE 8880 7.4 8.0 93 8.9 8.8 101
GRAVE SPRINGS 8550 5.1 5.9 86 5.4 6.5 83
HANSEN SAWMILL 8360 4.7 4.3 109 5.0 5.4 93
LITTLE GOOSE 8870 6.0 -M * 9.9 -M *
MIDDLE POWDER 7760 6.5 7.4 88 4.4 8.4 52
POWDER RIVER PASS 9480 10.0 7.4 135 11.7 8.4 139
SOLDIER PARK 8720 4.5 -M * 5.9 -M *
SUCKER CREEK 8880 8.6 7.4 116 9.4 8.9 106
TIE CREEK 6870 4.3 4.1 105 6.4 6.9 93
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Basin wide percent of average 108 102
BELLE FOURCHE
BLIND PARK 6890 6.0 5.5 109 11.9 7.9 151
COLE CANYON 5910 5.6 4.6 122 8.3 4.8 173
NORTH RAPID CREEK 6130 5.8 5.1 114 9.8 6.4 153
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Basin wide percent of average 114 157
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 18.0 13.4 134 21.3 14.5 147
COLUMBINE 9160 21.7 16.9 128 23.3 16.9 138
DIVIDE PEAK 8880 14.4 13.2 109 18.2 13.9 131
ELK RIVER 8700 16.0 12.5 128 17.9 12.9 139
JOE WRIGHT 10120 18.0 14.1 128 23.7 16.5 144
NORTH FRENCH CREEK 10130 29.4 18.7 157 27.8 16.6 167
OLD BATTLE 10000 28.5 20.4 140 26.3 22.8 115
SAGE CREEK BASIN 7850 13.4 7.7 174 13.2 8.1 163
SOUTH BRUSH CREEK 8440 11.6 7.6 153 14.5 11.0 132
TOWER 10500 37.2 30.6 122 35.1 25.8 136
WEBBER SPRINGS 9250 20.0 16.4 122 24.7 18.3 135
WILLOW CREEK PASS 9540 12.3 7.7 160 12.1 8.4 144
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Basin wide percent of average 134 139
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 20.4 15.6 131 21.4 14.5 148
CASPER MTN. 7900 7.6 9.2 83 10.3 9.1 113
DEADMAN HILL 10220 -M 10.7 * -M 10.8 *
DEER PARK 9700 14.1 11.6 122 15.3 14.8 103
LAPRELE CREEK 8375 8.0 7.4 108 9.3 8.3 112
RENO HILL 8400 9.3 8.5 109 11.0 9.5 116
ROACH 9700 13.6 11.2 121 16.4 11.8 139
SAND LAKE 10050 24.1 20.3 119 22.7 16.1 141
SOUTH PASS 9040 11.6 11.4 102 10.2 12.4 82
WINDY PEAK 7900 6.3 4.6 137 9.1 7.1 128
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Basin wide percent of average 115 121
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 8.0 * 10.2 10.0 102
DIVIDE PEAK 8880 14.4 13.2 109 18.2 13.9 131
OLD BATTLE 10000 28.5 20.4 140 26.3 22.8 115
SANDSTONE RS 8150 -M 9.9 * -M 12.7 *
WHISKEY PARK 8950 -M 18.9 * 27.0 19.7 137
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Basin wide percent of average 128* 123
UPPER GREEN RIVER
BIG SANDY OPENING 9080 9.5 9.7 98 10.1 9.2 110
BLIND BULL SUM 8650 20.0 18.7 107 14.6 15.6 94
EAST RIM DIVIDE 7930 9.5 8.7 109 9.5 8.2 116
ELKHART PARK G.S. 9400 8.6 8.9 97 8.9 9.0 99
GROS VENTRE SUMMIT 8750 10.1 9.6 105 9.8 8.8 111
GUNSIGHT PASS 9820 11.5 -M * 11.7 -M *
KENDALL R.S. 7740 8.5 10.0 85 10.4 9.9 105
LOOMIS PARK 8240 12.5 11.5 109 13.6 12.0 113
NEW FORK LAKE 8340 8.2 7.8 105 7.9 8.0 99
POCKET CREEK 9360 7.4 -M * 9.8 -M *
SNIDER BASIN 8060 13.8 10.0 138 13.7 11.3 121
SPRING CREEK DIVIDE 9000 23.9 17.7 135 23.3 18.6 125
TRIPLE PEAK 8500 21.2 16.9 125 22.5 16.5 136
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Basin wide percent of average 113 114
LOWER GREEN RIVER
HAMS FORK 7840 11.0 8.5 129 11.4 8.5 134
HEWINTA 9519 7.7 6.9 112 11.4 9.5 120
HICKERSON PARK 9145 4.0 4.5 89 5.7 5.3 108
HOLE-IN-ROCK 9150 4.8 4.2 114 6.4 4.8 133
INDIAN CREEK 9425 21.8 17.9 122 20.0 17.1 117
KELLEY R.S. 8180 14.4 10.9 132 16.8 14.1 119
STEEL CREEK PARK 10200 10.9 9.6 114 14.1 10.3 137
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Basin wide percent of average 119 123
UPPER BEAR RIVER
BUG LAKE 7950 18.7 13.5 139 20.1 13.1 153
HAYDEN FORK 9212 14.1 10.0 141 20.9 13.8 151
KELLEY R.S. 8180 14.4 10.9 132 16.8 14.1 119
LILY LAKE 9156 12.6 8.4 150 15.3 11.6 132
MONTE CRISTO 8960 23.0 18.7 123 24.8 17.0 146
SALT RIVER SUMMIT 7760 11.1 9.5 117 15.2 12.8 119
TRIAL LAKE 9992 23.7 16.0 148 24.5 16.1 152
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Basin wide percent of average 135 140
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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.