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 1 , 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 13.9 12.7 109 16.9 14.9 113
COTTONWOOD CREEK 7670 18.4 14.2 130 24.1 18.7 129
GRAND TARGHEE 9260 33.3 -M * 24.2 -M *
GRANITE CREEK 6770 13.6 12.4 110 15.9 13.7 116
GRASSY LAKE 7265 24.4 23.0 106 27.1 25.0 108
GROS VENTRE SUMMIT 8750 10.1 9.5 106 9.8 8.7 113
GUNSIGHT PASS 9820 11.4 -M * 11.6 -M *
LEWIS LAKE DIVIDE 7850 23.7 23.1 103 24.1 24.9 97
PHILLIPS BENCH 8200 20.7 18.5 112 21.9 19.5 112
SALT RIVER SUMMIT 7760 11.3 9.2 123 15.2 12.6 121
SNAKE RIVER STATION 6920 -M 12.6 * 17.9 15.6 115
SPRING CREEK DIVIDE 9000 23.9 17.4 137 23.3 18.3 127
THUMB DIVIDE 7980 13.5 11.8 114 13.6 12.7 107
TOGWOTEE PASS 9580 19.8 16.9 117 21.2 16.8 126
TWO OCEAN PLATEAU 9240 22.9 19.0 121 18.7 18.5 101
WILLOW CREEK 8380 22.9 20.2 113 28.0 21.8 128
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Basin wide percent of average 115 115
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 17.3 16.2 107 16.9 14.0 121
BLACK BEAR 8170 29.3 25.6 114 29.0 26.1 111
CANYON 7870 11.0 8.9 124 12.4 10.8 115
FISHER CREEK 9100 26.5 23.8 111 25.6 24.6 104
MADISON PLATEAU 7750 18.4 16.2 114 20.2 17.5 115
NORTHEAST ENTRANCE 7350 8.8 7.7 114 10.7 8.9 120
PARKER PEAK 9400 19.6 14.8 132 18.1 11.1 163
SYLVAN LAKE 8420 16.1 15.2 106 19.4 14.8 131
THUMB DIVIDE 7980 13.5 11.8 114 13.6 12.7 107
TWO OCEAN PLATEAU 9240 22.9 19.0 121 18.7 18.5 101
WHISKEY CREEK 6800 13.2 11.1 119 15.6 13.8 113
WHITE MILL 8700 18.3 16.1 114 19.1 18.3 104
WOLVERINE 7650 11.4 8.6 133 10.4 9.2 113
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Basin wide percent of average 116 115
WIND RIVER
BURROUGHS CREEK 8750 10.1 10.1 100 10.6 11.3 94
CASTLE CREEK 8400 4.3 -M * 5.0 -M *
COLD SPRINGS 9630 5.8 6.0 97 5.7 7.1 80
DEER PARK 9700 14.1 11.7 121 15.3 14.5 106
HOBBS PARK 10100 9.5 9.8 97 8.6 8.2 105
LITTLE WARM 9370 8.1 7.8 104 8.5 9.1 93
SOUTH PASS 9040 11.6 11.4 102 10.2 12.2 84
ST. LAWRENCE ALT 8620 3.7 4.8 77 4.5 5.7 79
TOGWOTEE PASS 9580 19.8 16.9 117 21.2 16.8 126
TOWNSEND CREEK 8700 5.5 5.6 98 7.4 7.3 101
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Basin wide percent of average 105 100
BIGHORN BASIN
BALD MTN. 9380 16.0 13.5 119 13.4 11.8 114
BEAR TRAP MEADOW 8200 5.5 3.5 157 5.9 5.5 107
BLACKWATER 9780 17.9 16.6 108 17.4 14.2 123
BONE SPRINGS DIV 9350 12.9 10.6 122 11.1 9.6 116
EVENING STAR 9200 22.5 19.7 114 24.9 17.6 141
GRAVE SPRINGS 8550 5.1 5.7 89 5.4 6.4 84
KIRWIN 9550 7.8 7.7 101 8.6 7.6 113
MARQUETTE 8760 2.0 5.9 34 4.6 6.2 74
MIDDLE POWDER 7760 6.4 7.2 89 4.3 8.3 52
OWL CREEK 8975 3.2 3.4 94 3.3 3.7 89
POWDER RIVER PASS 9480 10.0 7.2 139 11.7 8.3 141
SHELL CREEK 9580 11.7 9.9 118 10.5 9.3 113
SYLVAN LAKE 8420 16.1 15.2 106 19.4 14.8 131
SYLVAN ROAD 7120 10.8 8.8 123 14.3 13.3 108
TIMBER CREEK 7950 2.7 3.6 75 3.2 4.5 71
YOUNTS PEAK 8350 11.8 12.0 98 10.5 11.4 92
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Basin wide percent of average 108 110
SHOSHONE RIVER
BLACKWATER 9780 17.9 16.6 108 17.4 14.2 123
EVENING STAR 9200 22.5 19.7 114 24.9 17.6 141
KIRWIN 9550 7.8 7.7 101 8.6 7.6 113
MARQUETTE 8760 2.0 5.9 34 4.6 6.2 74
SYLVAN LAKE 8420 16.1 15.2 106 19.4 14.8 131
SYLVAN ROAD 7120 10.8 8.8 123 14.3 13.3 108
YOUNTS PEAK 8350 11.8 12.0 98 10.5 11.4 92
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Basin wide percent of average 103 117
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.5 3.5 157 5.9 5.5 107
BIG GOOSE 7990 5.2 6.0 87 6.7 5.7 118
BONE SPRINGS DIV 9350 12.9 10.6 122 11.1 9.6 116
BURGESS JUNCTION 7880 6.7 7.4 91 7.8 7.9 99
CLOUD PEAK RESERVOIR 9860 10.2 8.1 126 9.9 8.2 121
DOME LAKE 8880 7.4 7.9 94 8.6 8.7 99
GRAVE SPRINGS 8550 5.1 5.7 89 5.4 6.4 84
HANSEN SAWMILL 8360 4.7 4.2 112 5.0 5.3 94
LITTLE GOOSE 8870 5.9 -M * 9.8 -M *
MIDDLE POWDER 7760 6.4 7.2 89 4.3 8.3 52
POWDER RIVER PASS 9480 10.0 7.2 139 11.7 8.3 141
SOLDIER PARK 8720 4.5 -M * 5.9 -M *
SUCKER CREEK 8880 8.6 7.2 119 9.4 8.8 107
TIE CREEK 6870 4.3 4.0 108 6.4 6.8 94
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Basin wide percent of average 110 103
BELLE FOURCHE
BLIND PARK 6890 6.0 5.2 115 11.8 7.8 151
COLE CANYON 5910 5.6 4.5 124 8.3 4.7 177
NORTH RAPID CREEK 6130 5.8 5.0 116 9.6 6.3 152
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Basin wide percent of average 118 158
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 18.1 13.2 137 21.2 14.3 148
COLUMBINE 9160 21.9 16.5 133 24.0 16.7 144
DIVIDE PEAK 8880 14.3 13.0 110 18.4 13.7 134
ELK RIVER 8700 16.1 12.2 132 18.0 12.7 142
JOE WRIGHT 10120 18.5 13.9 133 23.5 16.2 145
NORTH FRENCH CREEK 10130 29.6 18.4 161 27.9 16.4 170
OLD BATTLE 10000 29.0 20.0 145 26.6 22.4 119
SAGE CREEK BASIN 7850 12.4 7.5 165 13.1 7.9 166
SOUTH BRUSH CREEK 8440 11.6 7.4 157 14.9 10.9 137
TOWER 10500 37.7 30.1 125 35.4 25.4 139
WEBBER SPRINGS 9250 20.1 16.1 125 24.8 18.0 138
WILLOW CREEK PASS 9540 12.4 7.5 165 12.1 8.3 146
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Basin wide percent of average 137 142
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 20.5 15.3 134 21.4 14.3 150
CASPER MTN. 7900 7.6 9.0 84 10.3 8.9 116
DEADMAN HILL 10220 9.3 10.6 88 15.0 10.6 142
DEER PARK 9700 14.1 11.7 121 15.3 14.5 106
LAPRELE CREEK 8375 8.0 7.3 110 9.1 8.1 112
RENO HILL 8400 9.2 8.4 110 10.7 9.3 115
ROACH 9700 13.6 11.0 124 16.8 11.7 144
SAND LAKE 10050 24.3 19.9 122 22.9 15.9 144
SOUTH PASS 9040 11.6 11.4 102 10.2 12.2 84
WINDY PEAK 7900 6.4 4.5 142 9.0 7.0 129
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Basin wide percent of average 114 125
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.0 7.8 38 10.4 9.9 105
DIVIDE PEAK 8880 14.3 13.0 110 18.4 13.7 134
OLD BATTLE 10000 29.0 20.0 145 26.6 22.4 119
SANDSTONE RS 8150 -M 9.7 * -M 12.5 *
WHISKEY PARK 8950 -M 18.5 * 27.1 19.4 140
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Basin wide percent of average 113 126
UPPER GREEN RIVER
BIG SANDY OPENING 9080 9.6 9.5 101 10.2 9.0 113
BLIND BULL SUM 8650 20.1 18.4 109 14.4 15.4 94
EAST RIM DIVIDE 7930 9.6 8.5 113 8.7 8.1 107
ELKHART PARK G.S. 9400 8.5 8.8 97 8.8 8.9 99
GROS VENTRE SUMMIT 8750 10.1 9.5 106 9.8 8.7 113
GUNSIGHT PASS 9820 11.4 -M * 11.6 -M *
KENDALL R.S. 7740 8.5 9.8 87 10.4 9.7 107
LOOMIS PARK 8240 12.6 11.2 113 13.6 11.8 115
NEW FORK LAKE 8340 8.1 7.7 105 7.7 7.9 97
POCKET CREEK 9360 7.4 -M * 9.7 -M *
SNIDER BASIN 8060 13.9 9.8 142 13.8 11.1 124
SPRING CREEK DIVIDE 9000 23.9 17.4 137 23.3 18.3 127
TRIPLE PEAK 8500 21.2 16.6 128 22.5 16.2 139
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Basin wide percent of average 115 114
LOWER GREEN RIVER
HAMS FORK 7840 11.1 8.4 132 11.2 8.4 133
HEWINTA 9519 7.6 6.7 113 11.5 9.3 124
HICKERSON PARK 9145 4.3 4.4 98 6.1 5.2 117
HOLE-IN-ROCK 9150 4.9 4.1 120 6.5 4.8 135
INDIAN CREEK 9425 21.8 17.6 124 19.9 16.8 118
KELLEY R.S. 8180 14.4 10.7 135 17.0 13.9 122
STEEL CREEK PARK 10200 11.1 9.4 118 14.1 10.1 140
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Basin wide percent of average 123 126
UPPER BEAR RIVER
BUG LAKE 7950 18.7 13.2 142 20.2 12.9 157
HAYDEN FORK 9212 13.9 9.8 142 20.6 13.6 151
KELLEY R.S. 8180 14.4 10.7 135 17.0 13.9 122
LILY LAKE 9156 12.6 8.2 154 15.0 11.5 130
MONTE CRISTO 8960 23.0 18.2 126 24.7 16.7 148
SALT RIVER SUMMIT 7760 11.3 9.2 123 15.2 12.6 121
TRIAL LAKE 9992 23.9 15.7 152 24.6 15.8 156
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Basin wide percent of average 139 142
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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.