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: DECEMBER 10 , 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 5.1 5.3 96 8.7 7.4 118
COTTONWOOD CREEK 7670 3.8 6.1 62 8.5 9.6 89
GRAND TARGHEE 9260 10.7 -M * 9.9 -M *
GRANITE CREEK 6770 3.6 4.6 78 5.5 6.6 83
GRASSY LAKE 7265 5.4 9.7 56 10.4 11.8 88
GROS VENTRE SUMMIT 8750 3.2 4.8 67 4.7 4.9 96
GUNSIGHT PASS 9820 3.9 -M * 5.4 -M *
LEWIS LAKE DIVIDE 7850 6.2 9.8 63 11.0 12.2 90
PHILLIPS BENCH 8200 4.8 8.3 58 7.3 9.2 79
SALT RIVER SUMMIT 7760 2.6 3.4 76 4.3 6.1 70
SNAKE RIVER STATION 6920 4.3 5.2 83 8.8 7.9 111
SPRING CREEK DIVIDE 9000 5.2 8.6 60 7.0 9.0 78
THUMB DIVIDE 7980 4.2 5.1 82 7.0 6.5 108
TOGWOTEE PASS 9580 6.8 8.4 81 8.6 8.7 99
TWO OCEAN PLATEAU 9240 11.2 9.9 113 10.0 9.9 101
WILLOW CREEK 8380 5.5 9.6 57 11.0 11.2 98
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Basin wide percent of average 73 93
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 7.8 8.4 93 8.0 7.2 111
BLACK BEAR 8170 9.0 12.0 75 11.5 12.6 91
CANYON 7870 3.3 4.1 80 5.3 5.7 93
FISHER CREEK 9100 10.5 11.6 91 12.3 12.0 102
MADISON PLATEAU 7750 5.8 7.8 74 9.8 9.0 109
NORTHEAST ENTRANCE 7350 2.2 3.3 67 4.4 4.8 92
PARKER PEAK 9400 7.6 7.9 96 9.4 6.4 147
SYLVAN LAKE 8420 5.1 7.7 66 9.4 8.4 112
THUMB DIVIDE 7980 4.2 5.1 82 7.0 6.5 108
TWO OCEAN PLATEAU 9240 11.2 9.9 113 10.0 9.9 101
WHISKEY CREEK 6800 4.1 4.9 84 7.7 7.1 108
WHITE MILL 8700 5.9 8.1 73 7.9 9.4 84
WOLVERINE 7650 4.4 3.9 113 5.9 5.3 111
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Basin wide percent of average 86 104
WIND RIVER
BURROUGHS CREEK 8750 3.6 4.9 73 4.5 5.8 78
CASTLE CREEK 8400 2.0 -M * 2.9 -M *
COLD SPRINGS 9630 3.3 3.7 89 4.6 4.7 98
DEER PARK 9700 3.8 5.1 75 6.9 8.2 84
HOBBS PARK 10100 6.2 6.2 100 6.3 5.2 121
LITTLE WARM 9370 2.7 4.1 66 4.8 5.2 92
SOUTH PASS 9040 4.3 6.1 70 5.6 7.0 80
ST. LAWRENCE ALT 8620 2.1 3.1 68 3.5 3.8 92
TOGWOTEE PASS 9580 6.8 8.4 81 8.6 8.7 99
TOWNSEND CREEK 8700 3.1 3.4 91 5.8 5.0 116
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Basin wide percent of average 80 94
BIGHORN BASIN
BALD MTN. 9380 7.7 6.9 112 6.8 6.2 110
BEAR TRAP MEADOW 8200 2.2 2.0 110 4.1 3.8 108
BLACKWATER 9780 10.2 9.4 109 9.8 8.4 117
BONE SPRINGS DIV 9350 8.0 6.0 133 7.5 5.6 134
EVENING STAR 9200 8.4 10.4 81 11.4 9.6 119
GRAVE SPRINGS 8550 2.6 2.9 90 4.7 4.0 118
KIRWIN 9550 5.7 4.8 119 7.0 4.7 149
MARQUETTE 8760 2.8 -M * 7.1 4.5 158
MIDDLE POWDER 7760 3.7 4.0 92 6.5 5.5 118
OWL CREEK 8975 2.1 2.1 100 3.1 2.4 129
POWDER RIVER PASS 9480 4.5 3.9 115 6.0 4.7 128
SHELL CREEK 9580 7.6 5.6 136 7.0 5.2 135
SYLVAN LAKE 8420 5.1 7.7 66 9.4 8.4 112
SYLVAN ROAD 7120 3.6 4.4 82 6.7 7.9 85
TIMBER CREEK 7950 2.5 2.5 100 5.9 3.3 179
YOUNTS PEAK 8350 5.0 5.8 86 6.2 6.0 103
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Basin wide percent of average 101 121
SHOSHONE RIVER
BLACKWATER 9780 10.2 9.4 109 9.8 8.4 117
EVENING STAR 9200 8.4 10.4 81 11.4 9.6 119
KIRWIN 9550 5.7 4.8 119 7.0 4.7 149
MARQUETTE 8760 2.8 -M * 7.1 4.5 158
SYLVAN LAKE 8420 5.1 7.7 66 9.4 8.4 112
SYLVAN ROAD 7120 3.6 4.4 82 6.7 7.9 85
YOUNTS PEAK 8350 5.0 5.8 86 6.2 6.0 103
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Basin wide percent of average 89 116
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.2 2.0 110 4.1 3.8 108
BIG GOOSE 7990 4.4 2.9 152 8.2 3.5 234
BONE SPRINGS DIV 9350 8.0 6.0 133 7.5 5.6 134
BURGESS JUNCTION 7880 5.2 3.9 133 8.0 4.8 167
CLOUD PEAK RESERVOIR 9860 6.3 4.3 147 7.9 5.4 146
DOME LAKE 8880 5.3 4.7 113 8.6 5.5 156
GRAVE SPRINGS 8550 2.6 2.9 90 4.7 4.0 118
HANSEN SAWMILL 8360 2.6 2.4 108 4.4 3.5 126
LITTLE GOOSE 8870 5.3 -M * 9.1 -M *
MIDDLE POWDER 7760 3.7 4.0 92 6.5 5.5 118
POWDER RIVER PASS 9480 4.5 3.9 115 6.0 4.7 128
SOLDIER PARK 8720 4.0 -M * 5.8 -M *
SUCKER CREEK 8880 6.9 3.7 186 8.1 5.1 159
TIE CREEK 6870 3.2 1.3 246 8.5 4.1 207
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Basin wide percent of average 131 149
BELLE FOURCHE
BLIND PARK 6890 2.2 2.2 100 3.2 5.0 64
COLE CANYON 5910 1.7 2.4 71 3.5 3.2 109
NORTH RAPID CREEK 6130 2.8 2.1 133 2.6 4.2 62
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Basin wide percent of average 100 75
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 8.7 -M * 10.4 -M *
CINNABAR PARK 9574 5.4 6.8 79 8.3 8.0 104
COLUMBINE 9160 5.1 6.3 81 7.3 7.9 92
DIVIDE PEAK 8880 6.0 6.2 97 9.4 7.3 129
ELK RIVER 8700 4.4 4.1 107 6.2 6.3 98
JOE WRIGHT 10120 6.0 7.2 83 9.3 9.0 103
NORTH FRENCH CREEK 10130 6.5 9.4 69 7.6 8.8 86
OLD BATTLE 10000 9.2 10.8 85 11.5 11.3 102
SAGE CREEK BASIN 7850 5.6 3.6 156 5.1 4.3 119
SOUTH BRUSH CREEK 8440 2.4 3.5 69 5.1 5.9 86
TOWER 10500 9.5 15.1 63 11.7 12.8 91
WEBBER SPRINGS 9250 6.7 8.1 83 10.0 9.3 108
WILLOW CREEK PASS 9540 4.0 4.2 95 4.5 5.0 90
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Basin wide percent of average 83 100
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.9 7.3 67 7.1 7.3 97
CASPER MTN. 7900 6.0 5.4 111 8.9 5.9 151
DEADMAN HILL 10220 8.0 5.8 138 7.8 6.1 128
DEER PARK 9700 3.8 5.1 75 6.9 8.2 84
LAPRELE CREEK 8375 2.5 3.8 66 5.1 4.8 106
RENO HILL 8400 5.4 5.0 108 7.2 5.7 126
ROACH 9700 6.0 5.2 115 8.2 6.2 132
SAND LAKE 10050 8.5 11.0 77 9.0 8.5 106
SOUTH PASS 9040 4.3 6.1 70 5.6 7.0 80
WINDY PEAK 7900 2.5 2.7 93 4.1 4.3 95
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Basin wide percent of average 90 109
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.9 2.3 170 5.2 5.2 100
DIVIDE PEAK 8880 6.0 6.2 97 9.4 7.3 129
OLD BATTLE 10000 9.2 10.8 85 11.5 11.3 102
SANDSTONE RS 8150 2.8 3.1 90 5.0 6.4 78
WHISKEY PARK 8950 5.6 7.5 75 9.4 9.4 100
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Basin wide percent of average 92 102
UPPER GREEN RIVER
BIG SANDY OPENING 9080 3.1 4.9 63 4.0 5.0 80
BLIND BULL SUM 8650 5.1 8.9 57 5.6 7.9 71
EAST RIM DIVIDE 7930 2.8 4.0 70 4.4 4.1 107
ELKHART PARK G.S. 9400 3.3 4.3 77 5.1 5.1 100
GROS VENTRE SUMMIT 8750 3.2 4.8 67 4.7 4.9 96
GUNSIGHT PASS 9820 3.9 -M * 5.4 -M *
KENDALL R.S. 7740 3.6 4.2 86 5.3 4.8 110
LOOMIS PARK 8240 3.5 5.5 64 5.8 5.9 98
NEW FORK LAKE 8340 3.6 3.6 100 4.7 4.4 107
POCKET CREEK 9360 2.1 -M * 3.8 -M *
SNIDER BASIN 8060 2.7 4.6 59 3.9 5.5 71
SPRING CREEK DIVIDE 9000 5.2 8.6 60 7.0 9.0 78
TRIPLE PEAK 8500 5.5 8.0 69 7.9 7.9 100
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Basin wide percent of average 68 91
LOWER GREEN RIVER
HAMS FORK 7840 2.4 3.3 73 4.4 4.2 105
HEWINTA 9519 2.5 2.6 96 5.3 5.6 95
HICKERSON PARK 9145 3.4 1.9 179 6.6 3.5 189
HOLE-IN-ROCK 9150 2.0 1.8 111 5.8 3.3 176
INDIAN CREEK 9425 5.6 8.4 67 6.5 8.5 76
KELLEY R.S. 8180 3.5 5.3 66 5.9 6.9 86
STEEL CREEK PARK 10200 3.2 4.8 67 6.1 5.9 103
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Basin wide percent of average 80 107
UPPER BEAR RIVER
BUG LAKE 7950 4.0 5.2 77 6.5 6.8 96
HAYDEN FORK 9212 2.9 3.9 74 7.3 7.3 100
KELLEY R.S. 8180 3.5 5.3 66 5.9 6.9 86
LILY LAKE 9156 2.2 3.6 61 5.4 6.6 82
MONTE CRISTO 8960 5.4 6.7 81 7.2 8.8 82
SALT RIVER SUMMIT 7760 2.6 3.4 76 4.3 6.1 70
TRIAL LAKE 9992 4.5 7.0 64 5.3 8.0 66
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Basin wide percent of average 72 83
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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.