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: JANUARY 27 , 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 14.1 12.0 118 16.9 14.2 119
COTTONWOOD CREEK 7670 19.0 13.6 140 24.1 18.0 134
GRAND TARGHEE 9260 33.3 -M * 24.4 -M *
GRANITE CREEK 6770 13.7 11.6 118 16.0 13.1 122
GRASSY LAKE 7265 24.5 21.7 113 26.9 24.0 112
GROS VENTRE SUMMIT 8750 10.1 9.1 111 10.0 8.3 120
GUNSIGHT PASS 9820 11.6 -M * 11.8 -M *
LEWIS LAKE DIVIDE 7850 23.8 21.8 109 24.5 23.8 103
PHILLIPS BENCH 8200 20.8 17.6 118 22.0 18.7 118
SALT RIVER SUMMIT 7760 11.5 8.6 134 15.5 12.1 128
SNAKE RIVER STATION 6920 -M 11.8 * 18.0 14.9 121
SPRING CREEK DIVIDE 9000 24.0 16.6 145 23.5 17.6 134
THUMB DIVIDE 7980 13.7 11.1 123 13.9 12.2 114
TOGWOTEE PASS 9580 19.9 16.1 124 21.1 16.2 130
TWO OCEAN PLATEAU 9240 23.0 18.1 127 17.5 17.7 99
WILLOW CREEK 8380 22.9 19.3 119 27.0 20.9 129
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Basin wide percent of average 122 120
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 17.0 15.7 108 16.6 13.4 124
BLACK BEAR 8170 29.2 24.7 118 29.0 24.8 117
CANYON 7870 10.8 8.6 126 12.2 10.4 117
FISHER CREEK 9100 26.2 22.9 114 25.0 23.6 106
MADISON PLATEAU 7750 18.4 15.6 118 20.1 16.7 120
NORTHEAST ENTRANCE 7350 8.6 7.4 116 10.6 8.5 125
PARKER PEAK 9400 19.3 14.3 135 17.7 10.7 165
SYLVAN LAKE 8420 16.0 14.5 110 19.2 14.2 135
THUMB DIVIDE 7980 13.7 11.1 123 13.9 12.2 114
TWO OCEAN PLATEAU 9240 23.0 18.1 127 17.5 17.7 99
WHISKEY CREEK 6800 13.1 10.7 122 15.6 13.2 118
WHITE MILL 8700 18.0 15.5 116 18.8 17.4 108
WOLVERINE 7650 11.2 8.4 133 10.1 8.9 113
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Basin wide percent of average 120 118
WIND RIVER
BURROUGHS CREEK 8750 10.0 9.8 102 10.6 10.9 97
CASTLE CREEK 8400 4.3 -M * 5.0 -M *
COLD SPRINGS 9630 5.8 5.8 100 5.7 6.9 83
DEER PARK 9700 14.0 11.5 122 15.2 14.0 109
HOBBS PARK 10100 9.5 9.5 100 8.6 7.9 109
LITTLE WARM 9370 8.0 7.5 107 8.3 8.8 94
SOUTH PASS 9040 11.5 10.8 106 10.1 11.7 86
ST. LAWRENCE ALT 8620 3.8 4.6 83 4.5 5.5 82
TOGWOTEE PASS 9580 19.9 16.1 124 21.1 16.2 130
TOWNSEND CREEK 8700 5.5 5.4 102 7.4 7.1 104
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Basin wide percent of average 109 103
BIGHORN BASIN
BALD MTN. 9380 15.9 13.0 122 13.1 11.3 116
BEAR TRAP MEADOW 8200 5.5 3.4 162 5.8 5.3 109
BLACKWATER 9780 17.9 16.0 112 17.4 13.7 127
BONE SPRINGS DIV 9350 12.8 10.2 125 11.0 9.3 118
EVENING STAR 9200 22.0 19.0 116 24.5 17.0 144
GRAVE SPRINGS 8550 5.0 5.4 93 5.4 6.3 86
KIRWIN 9550 7.8 7.5 104 8.7 7.4 118
MARQUETTE 8760 1.9 5.8 33 4.4 6.1 72
MIDDLE POWDER 7760 6.4 6.9 93 4.3 8.1 53
OWL CREEK 8975 3.1 3.3 94 3.3 3.6 92
POWDER RIVER PASS 9480 -M 7.0 * -M 8.0 *
SHELL CREEK 9580 11.6 9.6 121 10.3 8.9 116
SYLVAN LAKE 8420 16.0 14.5 110 19.2 14.2 135
SYLVAN ROAD 7120 10.8 8.5 127 14.2 12.8 111
TIMBER CREEK 7950 2.6 3.5 74 3.1 4.4 70
YOUNTS PEAK 8350 11.7 11.5 102 10.4 11.0 95
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Basin wide percent of average 109 111
SHOSHONE RIVER
BLACKWATER 9780 17.9 16.0 112 17.4 13.7 127
EVENING STAR 9200 22.0 19.0 116 24.5 17.0 144
KIRWIN 9550 7.8 7.5 104 8.7 7.4 118
MARQUETTE 8760 1.9 5.8 33 4.4 6.1 72
SYLVAN LAKE 8420 16.0 14.5 110 19.2 14.2 135
SYLVAN ROAD 7120 10.8 8.5 127 14.2 12.8 111
YOUNTS PEAK 8350 11.7 11.5 102 10.4 11.0 95
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Basin wide percent of average 106 120
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.5 3.4 162 5.8 5.3 109
BIG GOOSE 7990 5.1 5.7 89 6.6 5.3 125
BONE SPRINGS DIV 9350 12.8 10.2 125 11.0 9.3 118
BURGESS JUNCTION 7880 6.6 7.1 93 7.8 7.6 103
CLOUD PEAK RESERVOIR 9860 10.2 7.7 132 10.0 7.9 127
DOME LAKE 8880 7.4 7.7 96 8.6 8.4 102
GRAVE SPRINGS 8550 5.0 5.4 93 5.4 6.3 86
HANSEN SAWMILL 8360 4.6 4.0 115 4.9 5.1 96
LITTLE GOOSE 8870 5.9 -M * 9.8 -M *
MIDDLE POWDER 7760 6.4 6.9 93 4.3 8.1 53
POWDER RIVER PASS 9480 -M 7.0 * -M 8.0 *
SOLDIER PARK 8720 4.5 -M * 5.9 -M *
SUCKER CREEK 8880 8.6 6.9 125 9.4 8.5 111
TIE CREEK 6870 4.3 3.8 113 6.4 6.6 97
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Basin wide percent of average 111 102
BELLE FOURCHE
BLIND PARK 6890 6.0 5.1 118 11.8 7.6 155
COLE CANYON 5910 5.6 4.3 130 8.2 4.6 178
NORTH RAPID CREEK 6130 5.9 4.7 126 10.0 6.1 164
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Basin wide percent of average 124 164
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 18.3 12.8 143 21.3 13.9 153
COLUMBINE 9160 21.7 15.4 141 23.9 15.9 150
DIVIDE PEAK 8880 14.3 12.5 114 18.2 13.2 138
ELK RIVER 8700 15.8 11.4 139 18.0 12.2 148
JOE WRIGHT 10120 18.3 13.2 139 23.9 15.6 153
NORTH FRENCH CREEK 10130 29.1 17.7 164 27.7 15.7 176
OLD BATTLE 10000 28.7 19.1 150 26.7 21.5 124
SAGE CREEK BASIN 7850 12.3 7.3 168 13.0 7.6 171
SOUTH BRUSH CREEK 8440 11.3 7.0 161 14.7 10.4 141
TOWER 10500 37.0 28.6 129 35.3 24.3 145
WEBBER SPRINGS 9250 20.0 15.3 131 24.7 17.4 142
WILLOW CREEK PASS 9540 11.8 7.2 164 12.1 8.0 151
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Basin wide percent of average 142 148
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 20.4 14.7 139 21.3 13.7 155
CASPER MTN. 7900 7.5 8.7 86 10.0 8.6 116
DEADMAN HILL 10220 -M 10.1 * -M 10.2 *
DEER PARK 9700 14.0 11.5 122 15.2 14.0 109
LAPRELE CREEK 8375 7.9 7.0 113 9.0 7.9 114
RENO HILL 8400 9.2 8.2 112 11.1 9.0 123
ROACH 9700 13.5 10.4 130 16.7 11.2 149
SAND LAKE 10050 24.0 19.2 125 22.7 15.3 148
SOUTH PASS 9040 11.5 10.8 106 10.1 11.7 86
WINDY PEAK 7900 6.2 4.3 144 8.5 6.8 125
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Basin wide percent of average 120 127
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.3 7.3 73 10.2 9.5 107
DIVIDE PEAK 8880 14.3 12.5 114 18.2 13.2 138
OLD BATTLE 10000 28.7 19.1 150 26.7 21.5 124
SANDSTONE RS 8150 9.4 9.1 103 17.4 12.0 145
WHISKEY PARK 8950 -M 17.4 * 27.0 18.6 145
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Basin wide percent of average 120 133
UPPER GREEN RIVER
BIG SANDY OPENING 9080 9.7 9.1 107 10.3 8.6 120
BLIND BULL SUM 8650 20.2 17.6 115 14.7 14.8 99
EAST RIM DIVIDE 7930 9.8 8.1 121 8.8 7.8 113
ELKHART PARK G.S. 9400 8.8 8.4 105 9.0 8.6 105
GROS VENTRE SUMMIT 8750 10.1 9.1 111 10.0 8.3 120
GUNSIGHT PASS 9820 11.6 -M * 11.8 -M *
KENDALL R.S. 7740 8.7 9.4 93 10.5 9.3 113
LOOMIS PARK 8240 12.8 10.7 120 13.7 11.3 121
NEW FORK LAKE 8340 8.3 7.3 114 8.0 7.6 105
POCKET CREEK 9360 7.7 -M * 9.8 -M *
SNIDER BASIN 8060 14.1 9.3 152 14.0 10.7 131
SPRING CREEK DIVIDE 9000 24.0 16.6 145 23.5 17.6 134
TRIPLE PEAK 8500 21.3 15.9 134 22.7 15.5 146
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Basin wide percent of average 122 121
LOWER GREEN RIVER
HAMS FORK 7840 11.2 7.9 142 11.3 8.0 141
HEWINTA 9519 7.3 6.3 116 11.3 8.9 127
HICKERSON PARK 9145 3.9 4.2 93 5.7 5.0 114
HOLE-IN-ROCK 9150 4.6 3.9 118 6.1 4.6 133
INDIAN CREEK 9425 22.0 16.8 131 20.2 16.2 125
KELLEY R.S. 8180 14.4 10.1 143 17.2 13.4 128
STEEL CREEK PARK 10200 10.8 8.9 121 13.9 9.7 143
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Basin wide percent of average 128 130
UPPER BEAR RIVER
BUG LAKE 7950 18.5 12.4 149 20.2 12.4 163
HAYDEN FORK 9212 13.7 9.2 149 20.7 13.1 158
KELLEY R.S. 8180 14.4 10.1 143 17.2 13.4 128
LILY LAKE 9156 12.1 7.7 157 15.2 11.0 138
MONTE CRISTO 8960 22.7 17.0 134 24.7 16.0 154
SALT RIVER SUMMIT 7760 11.5 8.6 134 15.5 12.1 128
TRIAL LAKE 9992 23.7 14.8 160 24.5 15.2 161
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Basin wide percent of average 146 148
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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.