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 SATURDAY: JANUARY 22 , 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 11.3 124 16.7 13.6 123
COTTONWOOD CREEK 7670 19.3 12.9 150 23.8 17.3 138
GRAND TARGHEE 9260 32.9 -M * 23.9 -M *
GRANITE CREEK 6770 13.7 10.9 126 15.8 12.5 126
GRASSY LAKE 7265 23.9 20.4 117 26.5 22.8 116
GROS VENTRE SUMMIT 8750 10.0 8.7 115 9.8 8.0 123
GUNSIGHT PASS 9820 11.2 -M * 11.4 -M *
LEWIS LAKE DIVIDE 7850 23.3 20.4 114 23.5 22.7 104
PHILLIPS BENCH 8200 20.5 16.7 123 21.6 17.8 121
SALT RIVER SUMMIT 7760 11.3 8.0 141 15.2 11.6 131
SNAKE RIVER STATION 6920 9.9 11.0 90 17.4 14.2 123
SPRING CREEK DIVIDE 9000 23.4 15.8 148 23.0 16.9 136
THUMB DIVIDE 7980 13.3 10.4 128 13.5 11.7 115
TOGWOTEE PASS 9580 19.3 15.3 126 20.4 15.4 132
TWO OCEAN PLATEAU 9240 22.6 17.2 131 17.4 17.0 102
WILLOW CREEK 8380 22.5 18.4 122 26.6 20.0 133
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Basin wide percent of average 125 122
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 16.3 14.8 110 15.8 12.8 123
BLACK BEAR 8170 28.6 23.4 122 27.4 23.5 117
CANYON 7870 10.4 8.1 128 11.7 9.9 118
FISHER CREEK 9100 25.3 21.7 117 23.9 22.5 106
MADISON PLATEAU 7750 18.1 14.9 121 19.6 15.9 123
NORTHEAST ENTRANCE 7350 8.1 6.9 117 10.1 8.1 125
PARKER PEAK 9400 18.4 13.5 136 17.2 10.2 169
SYLVAN LAKE 8420 15.5 13.7 113 18.7 13.6 138
THUMB DIVIDE 7980 13.3 10.4 128 13.5 11.7 115
TWO OCEAN PLATEAU 9240 22.6 17.2 131 17.4 17.0 102
WHISKEY CREEK 6800 12.7 10.1 126 15.2 12.7 120
WHITE MILL 8700 17.4 14.7 118 18.1 16.6 109
WOLVERINE 7650 10.7 7.8 137 9.7 8.5 114
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Basin wide percent of average 123 119
WIND RIVER
BURROUGHS CREEK 8750 9.9 9.2 108 10.4 10.4 100
CASTLE CREEK 8400 4.3 -M * 5.0 -M *
COLD SPRINGS 9630 5.6 5.6 100 5.6 6.7 84
DEER PARK 9700 13.8 11.0 125 14.9 13.4 111
HOBBS PARK 10100 9.3 9.2 101 8.4 7.6 111
LITTLE WARM 9370 7.8 7.1 110 7.9 8.5 93
SOUTH PASS 9040 11.3 10.4 109 9.9 11.2 88
ST. LAWRENCE ALT 8620 3.7 4.5 82 4.5 5.3 85
TOGWOTEE PASS 9580 19.3 15.3 126 20.4 15.4 132
TOWNSEND CREEK 8700 5.2 5.2 100 7.0 6.9 101
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Basin wide percent of average 111 104
BIGHORN BASIN
BALD MTN. 9380 14.5 12.4 117 12.4 10.9 114
BEAR TRAP MEADOW 8200 4.9 3.2 153 5.5 5.2 106
BLACKWATER 9780 17.4 15.0 116 16.8 13.1 128
BONE SPRINGS DIV 9350 11.8 9.8 120 10.3 8.9 116
EVENING STAR 9200 21.6 18.0 120 23.5 16.3 144
GRAVE SPRINGS 8550 4.5 5.3 85 4.9 6.1 80
KIRWIN 9550 7.7 7.2 107 8.5 7.1 120
MARQUETTE 8760 1.8 5.6 32 4.3 5.9 73
MIDDLE POWDER 7760 6.1 6.7 91 3.9 7.8 50
OWL CREEK 8975 3.0 3.2 94 3.2 3.4 94
POWDER RIVER PASS 9480 -M 6.7 * -M 7.6 *
SHELL CREEK 9580 10.8 9.1 119 9.8 8.5 115
SYLVAN LAKE 8420 15.5 13.7 113 18.7 13.6 138
SYLVAN ROAD 7120 10.6 8.1 131 13.8 12.4 111
TIMBER CREEK 7950 2.6 3.4 76 3.1 4.2 74
YOUNTS PEAK 8350 11.6 10.8 107 9.9 10.5 94
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Basin wide percent of average 110 111
SHOSHONE RIVER
BLACKWATER 9780 17.4 15.0 116 16.8 13.1 128
EVENING STAR 9200 21.6 18.0 120 23.5 16.3 144
KIRWIN 9550 7.7 7.2 107 8.5 7.1 120
MARQUETTE 8760 1.8 5.6 32 4.3 5.9 73
SYLVAN LAKE 8420 15.5 13.7 113 18.7 13.6 138
SYLVAN ROAD 7120 10.6 8.1 131 13.8 12.4 111
YOUNTS PEAK 8350 11.6 10.8 107 9.9 10.5 94
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Basin wide percent of average 110 121
POWDER-TONGUE
BEAR TRAP MEADOW 8200 4.9 3.2 153 5.5 5.2 106
BIG GOOSE 7990 4.4 5.5 80 6.0 5.0 120
BONE SPRINGS DIV 9350 11.8 9.8 120 10.3 8.9 116
BURGESS JUNCTION 7880 5.3 6.8 78 6.5 7.3 89
CLOUD PEAK RESERVOIR 9860 9.0 7.4 122 8.9 7.7 116
DOME LAKE 8880 6.6 7.4 89 7.8 8.1 96
GRAVE SPRINGS 8550 4.5 5.3 85 4.9 6.1 80
HANSEN SAWMILL 8360 4.4 3.9 113 4.7 5.0 94
LITTLE GOOSE 8870 5.2 -M * 9.0 -M *
MIDDLE POWDER 7760 6.1 6.7 91 3.9 7.8 50
POWDER RIVER PASS 9480 -M 6.7 * -M 7.6 *
SOLDIER PARK 8720 4.0 -M * 5.5 -M *
SUCKER CREEK 8880 7.2 6.6 109 8.0 8.1 99
TIE CREEK 6870 3.4 3.7 92 5.4 6.3 86
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Basin wide percent of average 102 95
BELLE FOURCHE
BLIND PARK 6890 5.3 4.8 110 11.0 7.3 151
COLE CANYON 5910 4.9 4.1 120 7.7 4.4 175
NORTH RAPID CREEK 6130 5.3 4.4 120 9.4 6.0 157
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Basin wide percent of average 117 159
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 17.2 12.4 139 20.1 13.5 149
COLUMBINE 9160 20.7 14.3 145 23.0 15.2 151
DIVIDE PEAK 8880 14.0 11.9 118 17.5 12.6 139
ELK RIVER 8700 15.0 10.6 142 17.3 11.6 149
JOE WRIGHT 10120 17.0 12.5 136 22.8 14.9 153
NORTH FRENCH CREEK 10130 27.9 16.9 165 26.9 15.1 178
OLD BATTLE 10000 28.1 18.2 154 26.7 20.5 130
SAGE CREEK BASIN 7850 12.0 6.9 174 12.6 7.3 173
SOUTH BRUSH CREEK 8440 11.1 6.7 166 14.2 9.9 143
TOWER 10500 35.7 27.0 132 35.2 23.2 152
WEBBER SPRINGS 9250 19.2 14.5 132 23.8 16.7 143
WILLOW CREEK PASS 9540 11.1 6.9 161 11.7 7.7 152
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Basin wide percent of average 144 150
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 19.4 13.9 140 20.2 13.1 154
CASPER MTN. 7900 7.1 8.3 86 9.6 8.4 114
DEADMAN HILL 10220 8.9 9.7 92 14.5 9.8 148
DEER PARK 9700 13.8 11.0 125 14.9 13.4 111
LAPRELE CREEK 8375 7.1 6.7 106 8.3 7.6 109
RENO HILL 8400 8.5 7.9 108 10.4 8.7 120
ROACH 9700 13.1 9.8 134 16.3 10.7 152
SAND LAKE 10050 23.1 18.4 126 21.8 14.7 148
SOUTH PASS 9040 11.3 10.4 109 9.9 11.2 88
WINDY PEAK 7900 5.7 4.1 139 8.1 6.5 125
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Basin wide percent of average 118 129
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 6.4 6.7 96 10.0 9.1 110
DIVIDE PEAK 8880 14.0 11.9 118 17.5 12.6 139
OLD BATTLE 10000 28.1 18.2 154 26.7 20.5 130
SANDSTONE RS 8150 8.8 8.3 106 16.9 11.5 147
WHISKEY PARK 8950 -M 16.2 * 25.7 17.8 144
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Basin wide percent of average 127 135
UPPER GREEN RIVER
BIG SANDY OPENING 9080 9.8 8.7 113 10.3 8.3 124
BLIND BULL SUM 8650 20.0 16.8 119 14.6 14.1 104
EAST RIM DIVIDE 7930 9.4 7.6 124 8.8 7.4 119
ELKHART PARK G.S. 9400 8.6 8.0 108 8.9 8.3 107
GROS VENTRE SUMMIT 8750 10.0 8.7 115 9.8 8.0 123
GUNSIGHT PASS 9820 11.2 -M * 11.4 -M *
KENDALL R.S. 7740 8.7 8.9 98 10.4 8.9 117
LOOMIS PARK 8240 12.5 10.2 123 13.6 10.8 126
NEW FORK LAKE 8340 8.3 6.9 120 7.8 7.3 107
POCKET CREEK 9360 7.8 -M * 9.7 -M *
SNIDER BASIN 8060 13.8 8.8 157 13.7 10.2 134
SPRING CREEK DIVIDE 9000 23.4 15.8 148 23.0 16.9 136
TRIPLE PEAK 8500 20.6 15.2 136 22.3 14.8 151
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Basin wide percent of average 126 125
LOWER GREEN RIVER
HAMS FORK 7840 10.7 7.5 143 10.8 7.7 140
HEWINTA 9519 6.9 5.8 119 11.0 8.5 129
HICKERSON PARK 9145 3.7 3.9 95 5.7 4.9 116
HOLE-IN-ROCK 9150 4.3 3.6 119 5.9 4.5 131
INDIAN CREEK 9425 21.4 16.0 134 19.6 15.5 126
KELLEY R.S. 8180 14.1 9.6 147 16.8 12.8 131
STEEL CREEK PARK 10200 10.3 8.4 123 13.3 9.3 143
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Basin wide percent of average 130 131
UPPER BEAR RIVER
BUG LAKE 7950 18.1 11.7 155 19.6 11.8 166
HAYDEN FORK 9212 13.0 8.7 149 20.1 12.5 161
KELLEY R.S. 8180 14.1 9.6 147 16.8 12.8 131
LILY LAKE 9156 11.5 7.3 158 14.7 10.6 139
MONTE CRISTO 8960 22.1 15.8 140 24.2 15.3 158
SALT RIVER SUMMIT 7760 11.3 8.0 141 15.2 11.6 131
TRIAL LAKE 9992 23.4 14.0 167 24.1 14.5 166
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Basin wide percent of average 151 151
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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.