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 FRIDAY: JANUARY 21 , 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 13.6 11.2 121 16.5 13.4 123
COTTONWOOD CREEK 7670 18.9 12.7 149 23.4 17.1 137
GRAND TARGHEE 9260 31.9 -M * 23.4 -M *
GRANITE CREEK 6770 13.3 10.7 124 15.5 12.4 125
GRASSY LAKE 7265 23.4 20.1 116 25.9 22.6 115
GROS VENTRE SUMMIT 8750 9.8 8.7 113 9.6 7.9 122
GUNSIGHT PASS 9820 10.9 -M * 11.1 -M *
LEWIS LAKE DIVIDE 7850 23.0 20.2 114 23.3 22.5 104
PHILLIPS BENCH 8200 20.0 16.5 121 21.2 17.6 120
SALT RIVER SUMMIT 7760 10.9 7.9 138 14.8 11.5 129
SNAKE RIVER STATION 6920 -M 10.9 * 17.2 14.1 122
SPRING CREEK DIVIDE 9000 22.7 15.7 145 22.4 16.7 134
THUMB DIVIDE 7980 13.1 10.3 127 13.3 11.6 115
TOGWOTEE PASS 9580 18.9 15.1 125 20.1 15.3 131
TWO OCEAN PLATEAU 9240 22.3 17.1 130 17.1 16.8 102
WILLOW CREEK 8380 22.0 18.2 121 26.2 19.8 132
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Basin wide percent of average 126 122
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 15.9 14.8 107 15.4 12.6 122
BLACK BEAR 8170 28.0 23.1 121 27.2 23.3 117
CANYON 7870 10.2 8.0 128 11.4 9.8 116
FISHER CREEK 9100 24.6 21.5 114 23.3 22.2 105
MADISON PLATEAU 7750 17.7 14.7 120 19.3 15.7 123
NORTHEAST ENTRANCE 7350 7.8 6.9 113 9.8 8.1 121
PARKER PEAK 9400 17.9 13.5 133 17.0 10.1 168
SYLVAN LAKE 8420 15.1 13.6 111 18.4 13.5 136
THUMB DIVIDE 7980 13.1 10.3 127 13.3 11.6 115
TWO OCEAN PLATEAU 9240 22.3 17.1 130 17.1 16.8 102
WHISKEY CREEK 6800 12.4 9.9 125 14.9 12.5 119
WHITE MILL 8700 16.8 14.6 115 17.5 16.4 107
WOLVERINE 7650 10.3 7.7 134 9.5 8.4 113
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Basin wide percent of average 121 118
WIND RIVER
BURROUGHS CREEK 8750 9.6 9.2 104 10.1 10.3 98
CASTLE CREEK 8400 4.2 -M * 5.0 -M *
COLD SPRINGS 9630 5.5 5.6 98 5.5 6.7 82
DEER PARK 9700 13.9 10.9 128 14.9 13.3 112
HOBBS PARK 10100 9.3 9.2 101 8.5 7.6 112
LITTLE WARM 9370 7.6 7.1 107 7.8 8.4 93
SOUTH PASS 9040 11.4 10.3 111 10.2 11.1 92
ST. LAWRENCE ALT 8620 3.7 4.5 82 4.5 5.3 85
TOGWOTEE PASS 9580 18.9 15.1 125 20.1 15.3 131
TOWNSEND CREEK 8700 5.2 5.2 100 7.2 6.8 106
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Basin wide percent of average 110 105
BIGHORN BASIN
BALD MTN. 9380 14.0 12.3 114 12.1 10.8 112
BEAR TRAP MEADOW 8200 4.8 3.2 150 5.6 5.1 110
BLACKWATER 9780 17.0 14.9 114 16.5 13.0 127
BONE SPRINGS DIV 9350 11.4 9.8 116 9.9 8.8 113
EVENING STAR 9200 21.1 17.9 118 23.1 16.1 143
GRAVE SPRINGS 8550 4.4 5.3 83 4.8 6.0 80
KIRWIN 9550 7.6 7.2 106 8.4 7.1 118
MARQUETTE 8760 1.7 5.6 30 4.5 5.9 76
MIDDLE POWDER 7760 6.0 6.7 90 4.2 7.8 54
OWL CREEK 8975 2.9 3.2 91 3.3 3.4 97
POWDER RIVER PASS 9480 -M 6.6 * -M 7.5 *
SHELL CREEK 9580 10.6 9.1 116 9.5 8.4 113
SYLVAN LAKE 8420 15.1 13.6 111 18.4 13.5 136
SYLVAN ROAD 7120 10.3 8.0 129 13.6 12.3 111
TIMBER CREEK 7950 2.5 3.4 74 3.0 4.2 71
YOUNTS PEAK 8350 11.4 10.7 107 9.9 10.4 95
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Basin wide percent of average 108 111
SHOSHONE RIVER
BLACKWATER 9780 17.0 14.9 114 16.5 13.0 127
EVENING STAR 9200 21.1 17.9 118 23.1 16.1 143
KIRWIN 9550 7.6 7.2 106 8.4 7.1 118
MARQUETTE 8760 1.7 5.6 30 4.5 5.9 76
SYLVAN LAKE 8420 15.1 13.6 111 18.4 13.5 136
SYLVAN ROAD 7120 10.3 8.0 129 13.6 12.3 111
YOUNTS PEAK 8350 11.4 10.7 107 9.9 10.4 95
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Basin wide percent of average 108 121
POWDER-TONGUE
BEAR TRAP MEADOW 8200 4.8 3.2 150 5.6 5.1 110
BIG GOOSE 7990 4.3 5.5 78 5.8 5.0 116
BONE SPRINGS DIV 9350 11.4 9.8 116 9.9 8.8 113
BURGESS JUNCTION 7880 5.0 6.8 74 6.2 7.3 85
CLOUD PEAK RESERVOIR 9860 8.9 7.3 122 9.2 7.6 121
DOME LAKE 8880 6.3 7.4 85 7.7 8.1 95
GRAVE SPRINGS 8550 4.4 5.3 83 4.8 6.0 80
HANSEN SAWMILL 8360 4.3 3.9 110 4.7 4.9 96
LITTLE GOOSE 8870 5.2 -M * 8.9 -M *
MIDDLE POWDER 7760 6.0 6.7 90 4.2 7.8 54
POWDER RIVER PASS 9480 -M 6.6 * -M 7.5 *
SOLDIER PARK 8720 4.0 -M * 5.4 -M *
SUCKER CREEK 8880 6.8 6.6 103 7.6 8.1 94
TIE CREEK 6870 3.3 3.7 89 5.3 6.2 85
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Basin wide percent of average 99 95
BELLE FOURCHE
BLIND PARK 6890 5.0 4.8 104 10.6 7.3 145
COLE CANYON 5910 4.8 4.1 117 7.4 4.4 168
NORTH RAPID CREEK 6130 5.0 4.4 114 9.0 6.0 150
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Basin wide percent of average 111 153
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 17.0 12.3 138 20.0 13.5 148
COLUMBINE 9160 20.5 14.1 145 22.8 15.0 152
DIVIDE PEAK 8880 13.8 11.8 117 17.5 12.5 140
ELK RIVER 8700 14.9 10.5 142 17.2 11.5 150
JOE WRIGHT 10120 16.8 12.4 135 22.4 14.8 151
NORTH FRENCH CREEK 10130 27.6 16.7 165 26.8 14.9 180
OLD BATTLE 10000 27.5 18.0 153 26.6 20.3 131
SAGE CREEK BASIN 7850 11.8 6.8 174 12.6 7.3 173
SOUTH BRUSH CREEK 8440 11.0 6.6 167 14.1 9.8 144
TOWER 10500 35.1 26.7 131 35.1 22.9 153
WEBBER SPRINGS 9250 18.9 14.4 131 23.6 16.5 143
WILLOW CREEK PASS 9540 11.3 6.8 166 11.7 7.6 154
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Basin wide percent of average 144 150
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 19.2 13.8 139 20.1 13.0 155
CASPER MTN. 7900 6.9 8.3 83 9.6 8.3 116
DEADMAN HILL 10220 8.7 9.6 91 14.5 9.7 149
DEER PARK 9700 13.9 10.9 128 14.9 13.3 112
LAPRELE CREEK 8375 7.0 6.6 106 8.2 7.5 109
RENO HILL 8400 8.5 7.8 109 10.3 8.7 118
ROACH 9700 12.9 9.7 133 16.2 10.6 153
SAND LAKE 10050 22.9 18.2 126 21.7 14.6 149
SOUTH PASS 9040 11.4 10.3 111 10.2 11.1 92
WINDY PEAK 7900 5.5 4.1 134 8.0 6.5 123
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Basin wide percent of average 118 129
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 6.5 6.6 98 10.0 9.0 111
DIVIDE PEAK 8880 13.8 11.8 117 17.5 12.5 140
OLD BATTLE 10000 27.5 18.0 153 26.6 20.3 131
SANDSTONE RS 8150 8.7 8.2 106 16.8 11.4 147
WHISKEY PARK 8950 -M 15.9 * 25.6 17.6 145
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Basin wide percent of average 127 136
UPPER GREEN RIVER
BIG SANDY OPENING 9080 9.6 8.6 112 10.2 8.2 124
BLIND BULL SUM 8650 19.5 16.7 117 14.3 14.0 102
EAST RIM DIVIDE 7930 9.1 7.6 120 8.3 7.4 112
ELKHART PARK G.S. 9400 8.3 7.9 105 8.7 8.2 106
GROS VENTRE SUMMIT 8750 9.8 8.7 113 9.6 7.9 122
GUNSIGHT PASS 9820 10.9 -M * 11.1 -M *
KENDALL R.S. 7740 8.3 8.8 94 10.0 8.8 114
LOOMIS PARK 8240 12.1 10.1 120 13.1 10.7 122
NEW FORK LAKE 8340 8.0 6.9 116 7.5 7.3 103
POCKET CREEK 9360 7.6 -M * 9.6 -M *
SNIDER BASIN 8060 13.5 8.8 153 13.5 10.1 134
SPRING CREEK DIVIDE 9000 22.7 15.7 145 22.4 16.7 134
TRIPLE PEAK 8500 20.1 15.0 134 21.5 14.6 147
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Basin wide percent of average 123 122
LOWER GREEN RIVER
HAMS FORK 7840 10.4 7.4 141 10.7 7.6 141
HEWINTA 9519 6.8 5.7 119 10.9 8.5 128
HICKERSON PARK 9145 3.7 3.9 95 5.6 4.8 117
HOLE-IN-ROCK 9150 4.3 3.6 119 5.9 4.4 134
INDIAN CREEK 9425 20.8 15.9 131 19.2 15.3 125
KELLEY R.S. 8180 13.6 9.5 143 16.3 12.7 128
STEEL CREEK PARK 10200 10.2 8.4 121 13.2 9.2 143
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Basin wide percent of average 128 131
UPPER BEAR RIVER
BUG LAKE 7950 17.8 11.5 155 19.9 11.7 170
HAYDEN FORK 9212 12.9 8.6 150 20.1 12.4 162
KELLEY R.S. 8180 13.6 9.5 143 16.3 12.7 128
LILY LAKE 9156 11.5 7.2 160 14.7 10.5 140
MONTE CRISTO 8960 21.9 15.6 140 24.2 15.2 159
SALT RIVER SUMMIT 7760 10.9 7.9 138 14.8 11.5 129
TRIAL LAKE 9992 23.1 13.8 167 24.2 14.3 169
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Basin wide percent of average 151 152
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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.