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: JANUARY 25 , 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 14.0 11.7 120 16.8 14.0 120
COTTONWOOD CREEK 7670 19.0 13.3 143 24.1 17.7 136
GRAND TARGHEE 9260 33.2 -M * 24.2 -M *
GRANITE CREEK 6770 13.8 11.3 122 15.9 12.9 123
GRASSY LAKE 7265 24.4 21.2 115 26.8 23.5 114
GROS VENTRE SUMMIT 8750 10.1 9.0 112 9.9 8.2 121
GUNSIGHT PASS 9820 11.4 -M * 11.6 -M *
LEWIS LAKE DIVIDE 7850 23.6 21.3 111 24.3 23.4 104
PHILLIPS BENCH 8200 20.7 17.2 120 21.7 18.3 119
SALT RIVER SUMMIT 7760 11.3 8.4 135 15.3 11.9 129
SNAKE RIVER STATION 6920 -M 11.5 * 17.8 14.6 122
SPRING CREEK DIVIDE 9000 23.9 16.3 147 23.4 17.3 135
THUMB DIVIDE 7980 13.6 10.8 126 13.7 12.0 114
TOGWOTEE PASS 9580 19.7 15.8 125 20.9 15.9 131
TWO OCEAN PLATEAU 9240 22.8 17.8 128 17.3 17.4 99
WILLOW CREEK 8380 22.8 19.0 120 27.0 20.6 131
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Basin wide percent of average 124 121
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 16.9 15.3 110 16.4 13.1 125
BLACK BEAR 8170 29.1 24.4 119 27.7 24.3 114
CANYON 7870 10.7 8.4 127 12.0 10.2 118
FISHER CREEK 9100 26.1 22.5 116 24.8 23.1 107
MADISON PLATEAU 7750 18.3 15.4 119 19.8 16.4 121
NORTHEAST ENTRANCE 7350 8.6 7.3 118 10.6 8.4 126
PARKER PEAK 9400 19.2 14.0 137 17.6 10.5 168
SYLVAN LAKE 8420 15.9 14.2 112 19.1 13.9 137
THUMB DIVIDE 7980 13.6 10.8 126 13.7 12.0 114
TWO OCEAN PLATEAU 9240 22.8 17.8 128 17.3 17.4 99
WHISKEY CREEK 6800 13.0 10.5 124 15.5 13.0 119
WHITE MILL 8700 18.0 15.3 118 18.7 17.1 109
WOLVERINE 7650 11.1 8.2 135 10.0 8.7 115
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Basin wide percent of average 121 119
WIND RIVER
BURROUGHS CREEK 8750 10.0 9.6 104 10.5 10.7 98
CASTLE CREEK 8400 4.2 -M * 5.0 -M *
COLD SPRINGS 9630 5.7 5.7 100 5.6 6.8 82
DEER PARK 9700 14.0 11.4 123 15.1 13.7 110
HOBBS PARK 10100 9.4 9.4 100 8.6 7.8 110
LITTLE WARM 9370 8.0 7.3 110 8.1 8.7 93
SOUTH PASS 9040 11.5 10.7 107 10.0 11.5 87
ST. LAWRENCE ALT 8620 3.6 4.6 78 4.5 5.4 83
TOGWOTEE PASS 9580 19.7 15.8 125 20.9 15.9 131
TOWNSEND CREEK 8700 5.5 5.4 102 7.3 7.0 104
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Basin wide percent of average 109 104
BIGHORN BASIN
BALD MTN. 9380 15.6 12.8 122 12.9 11.2 115
BEAR TRAP MEADOW 8200 5.4 3.3 164 5.7 5.3 108
BLACKWATER 9780 17.7 15.6 113 17.2 13.4 128
BONE SPRINGS DIV 9350 12.7 10.1 126 10.7 9.1 118
EVENING STAR 9200 22.0 18.6 118 24.0 16.7 144
GRAVE SPRINGS 8550 4.9 5.3 92 5.3 6.2 85
KIRWIN 9550 7.8 7.4 105 8.6 7.3 118
MARQUETTE 8760 1.8 5.7 32 4.7 6.0 78
MIDDLE POWDER 7760 6.3 6.8 93 4.3 8.0 54
OWL CREEK 8975 3.1 3.2 97 3.4 3.5 97
POWDER RIVER PASS 9480 -M 6.9 * -M 7.8 *
SHELL CREEK 9580 11.5 9.4 122 10.3 8.8 117
SYLVAN LAKE 8420 15.9 14.2 112 19.1 13.9 137
SYLVAN ROAD 7120 10.9 8.3 131 14.2 12.7 112
TIMBER CREEK 7950 2.5 3.5 71 3.1 4.3 72
YOUNTS PEAK 8350 10.7 11.3 95 10.1 10.8 94
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Basin wide percent of average 110 112
SHOSHONE RIVER
BLACKWATER 9780 17.7 15.6 113 17.2 13.4 128
EVENING STAR 9200 22.0 18.6 118 24.0 16.7 144
KIRWIN 9550 7.8 7.4 105 8.6 7.3 118
MARQUETTE 8760 1.8 5.7 32 4.7 6.0 78
SYLVAN LAKE 8420 15.9 14.2 112 19.1 13.9 137
SYLVAN ROAD 7120 10.9 8.3 131 14.2 12.7 112
YOUNTS PEAK 8350 10.7 11.3 95 10.1 10.8 94
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Basin wide percent of average 107 121
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.4 3.3 164 5.7 5.3 108
BIG GOOSE 7990 4.8 5.6 86 6.4 5.2 123
BONE SPRINGS DIV 9350 12.7 10.1 126 10.7 9.1 118
BURGESS JUNCTION 7880 6.3 7.0 90 7.4 7.5 99
CLOUD PEAK RESERVOIR 9860 9.9 7.5 132 9.9 7.8 127
DOME LAKE 8880 7.2 7.6 95 8.4 8.3 101
GRAVE SPRINGS 8550 4.9 5.3 92 5.3 6.2 85
HANSEN SAWMILL 8360 4.3 4.0 108 4.8 5.1 94
LITTLE GOOSE 8870 5.7 -M * 9.5 -M *
MIDDLE POWDER 7760 6.3 6.8 93 4.3 8.0 54
POWDER RIVER PASS 9480 -M 6.9 * -M 7.8 *
SOLDIER PARK 8720 4.3 -M * 5.7 -M *
SUCKER CREEK 8880 8.2 6.7 122 9.1 8.3 110
TIE CREEK 6870 4.1 3.7 111 6.2 6.4 97
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Basin wide percent of average 110 101
BELLE FOURCHE
BLIND PARK 6890 5.8 5.0 116 11.8 7.5 157
COLE CANYON 5910 5.4 4.2 129 8.2 4.5 182
NORTH RAPID CREEK 6130 5.8 4.6 126 9.8 6.1 161
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Basin wide percent of average 123 165
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 18.3 12.6 145 21.2 13.8 154
COLUMBINE 9160 21.6 15.0 144 23.6 15.6 151
DIVIDE PEAK 8880 14.2 12.2 116 17.9 13.0 138
ELK RIVER 8700 15.7 11.1 141 17.9 11.9 150
JOE WRIGHT 10120 18.0 13.0 138 23.8 15.3 156
NORTH FRENCH CREEK 10130 28.8 17.4 166 27.7 15.5 179
OLD BATTLE 10000 28.6 18.7 153 26.6 21.1 126
SAGE CREEK BASIN 7850 12.2 7.1 172 12.9 7.5 172
SOUTH BRUSH CREEK 8440 11.3 6.9 164 14.4 10.2 141
TOWER 10500 36.9 28.0 132 35.2 23.9 147
WEBBER SPRINGS 9250 19.9 15.0 133 24.5 17.1 143
WILLOW CREEK PASS 9540 11.5 7.1 162 12.0 7.9 152
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Basin wide percent of average 144 149
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 20.1 14.4 140 21.1 13.5 156
CASPER MTN. 7900 7.4 8.5 87 10.0 8.5 118
DEADMAN HILL 10220 9.0 9.9 91 14.7 10.0 147
DEER PARK 9700 14.0 11.4 123 15.1 13.7 110
LAPRELE CREEK 8375 7.8 6.9 113 8.9 7.8 114
RENO HILL 8400 9.1 8.0 114 10.9 8.9 122
ROACH 9700 13.3 10.2 130 16.5 11.0 150
SAND LAKE 10050 23.8 18.8 127 22.4 15.1 148
SOUTH PASS 9040 11.5 10.7 107 10.0 11.5 87
WINDY PEAK 7900 6.1 4.2 145 8.6 6.7 128
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Basin wide percent of average 119 130
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 6.1 7.1 86 10.1 9.3 109
DIVIDE PEAK 8880 14.2 12.2 116 17.9 13.0 138
OLD BATTLE 10000 28.6 18.7 153 26.6 21.1 126
SANDSTONE RS 8150 9.2 8.8 105 17.3 11.8 147
WHISKEY PARK 8950 -M 16.9 * 26.9 18.3 147
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Basin wide percent of average 124 134
UPPER GREEN RIVER
BIG SANDY OPENING 9080 9.6 8.9 108 10.2 8.5 120
BLIND BULL SUM 8650 20.1 17.3 116 14.6 14.5 101
EAST RIM DIVIDE 7930 9.8 7.9 124 8.8 7.6 116
ELKHART PARK G.S. 9400 8.7 8.2 106 8.9 8.5 105
GROS VENTRE SUMMIT 8750 10.1 9.0 112 9.9 8.2 121
GUNSIGHT PASS 9820 11.4 -M * 11.6 -M *
KENDALL R.S. 7740 8.7 9.2 95 10.4 9.2 113
LOOMIS PARK 8240 12.7 10.5 121 13.7 11.1 123
NEW FORK LAKE 8340 8.2 7.2 114 7.8 7.5 104
POCKET CREEK 9360 7.7 -M * 9.8 -M *
SNIDER BASIN 8060 14.1 9.1 155 13.9 10.5 132
SPRING CREEK DIVIDE 9000 23.9 16.3 147 23.4 17.3 135
TRIPLE PEAK 8500 21.1 15.6 135 22.6 15.2 149
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Basin wide percent of average 123 122
LOWER GREEN RIVER
HAMS FORK 7840 10.9 7.7 142 11.1 7.9 141
HEWINTA 9519 7.2 6.1 118 11.2 8.8 127
HICKERSON PARK 9145 3.6 4.1 88 5.4 5.0 108
HOLE-IN-ROCK 9150 4.4 3.8 116 6.1 4.6 133
INDIAN CREEK 9425 21.9 16.5 133 20.0 15.9 126
KELLEY R.S. 8180 14.3 9.9 144 17.0 13.1 130
STEEL CREEK PARK 10200 10.6 8.7 122 13.6 9.5 143
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Basin wide percent of average 128 130
UPPER BEAR RIVER
BUG LAKE 7950 18.4 12.1 152 20.2 12.2 166
HAYDEN FORK 9212 13.5 9.0 150 20.6 12.8 161
KELLEY R.S. 8180 14.3 9.9 144 17.0 13.1 130
LILY LAKE 9156 11.7 7.5 156 15.0 10.8 139
MONTE CRISTO 8960 22.4 16.6 135 24.5 15.7 156
SALT RIVER SUMMIT 7760 11.3 8.4 135 15.3 11.9 129
TRIAL LAKE 9992 23.5 14.5 162 24.4 14.9 164
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Basin wide percent of average 148 150
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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.