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 SUNDAY: DECEMBER 4 , 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 4.5 113 8.6 6.6 130
COTTONWOOD CREEK 7670 3.6 5.1 71 8.2 8.5 96
GRAND TARGHEE 9260 10.4 -M * 9.6 -M *
GRANITE CREEK 6770 3.6 3.8 95 5.5 5.8 95
GRASSY LAKE 7265 5.4 8.3 65 10.5 10.4 101
GROS VENTRE SUMMIT 8750 3.2 4.2 76 4.5 4.5 100
GUNSIGHT PASS 9820 3.8 -M * 5.2 -M *
LEWIS LAKE DIVIDE 7850 6.3 8.4 75 11.3 10.7 106
PHILLIPS BENCH 8200 4.7 7.0 67 7.2 8.0 90
SALT RIVER SUMMIT 7760 2.3 2.9 79 4.1 5.3 77
SNAKE RIVER STATION 6920 4.3 4.4 98 8.7 6.9 126
SPRING CREEK DIVIDE 9000 5.1 7.4 69 6.7 7.9 85
THUMB DIVIDE 7980 4.3 4.4 98 7.0 5.8 121
TOGWOTEE PASS 9580 6.6 7.5 88 8.4 7.8 108
TWO OCEAN PLATEAU 9240 11.3 8.8 128 9.9 8.8 112
WILLOW CREEK 8380 5.4 8.3 65 10.8 10.0 108
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Basin wide percent of average 84 104
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 7.6 7.5 101 7.7 6.3 122
BLACK BEAR 8170 9.1 10.5 87 11.6 11.2 104
CANYON 7870 3.2 3.6 89 5.1 5.1 100
FISHER CREEK 9100 10.2 10.1 101 11.9 10.5 113
MADISON PLATEAU 7750 5.9 6.8 87 9.9 7.8 127
NORTHEAST ENTRANCE 7350 2.0 2.8 71 4.3 4.3 100
PARKER PEAK 9400 7.3 7.1 103 9.3 5.8 160
SYLVAN LAKE 8420 5.0 6.9 72 9.3 7.6 122
THUMB DIVIDE 7980 4.3 4.4 98 7.0 5.8 121
TWO OCEAN PLATEAU 9240 11.3 8.8 128 9.9 8.8 112
WHISKEY CREEK 6800 4.2 4.3 98 7.7 6.3 122
WHITE MILL 8700 5.7 7.1 80 7.7 8.3 93
WOLVERINE 7650 4.2 3.3 127 5.8 4.8 121
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Basin wide percent of average 96 116
WIND RIVER
BURROUGHS CREEK 8750 3.5 4.2 83 4.4 5.2 85
CASTLE CREEK 8400 1.9 -M * 2.7 -M *
COLD SPRINGS 9630 3.0 3.3 91 4.2 4.4 95
DEER PARK 9700 3.3 4.7 70 6.3 7.5 84
HOBBS PARK 10100 5.8 5.5 105 5.8 4.8 121
LITTLE WARM 9370 2.6 3.6 72 4.4 4.8 92
SOUTH PASS 9040 4.0 5.2 77 5.2 6.4 81
ST. LAWRENCE ALT 8620 1.5 2.8 54 3.2 3.6 89
TOGWOTEE PASS 9580 6.6 7.5 88 8.4 7.8 108
TOWNSEND CREEK 8700 2.6 3.1 84 5.2 4.7 111
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Basin wide percent of average 82 96
BIGHORN BASIN
BALD MTN. 9380 7.2 6.3 114 6.4 5.6 114
BEAR TRAP MEADOW 8200 2.0 1.8 111 3.6 3.5 103
BLACKWATER 9780 9.9 8.4 118 9.5 7.6 125
BONE SPRINGS DIV 9350 7.6 5.6 136 7.1 5.1 139
EVENING STAR 9200 8.2 9.2 89 11.1 8.7 128
GRAVE SPRINGS 8550 2.5 2.7 93 4.6 3.7 124
KIRWIN 9550 5.6 4.4 127 6.8 4.3 158
MARQUETTE 8760 2.2 -M * 6.7 4.2 160
MIDDLE POWDER 7760 3.5 3.8 92 6.1 5.1 120
OWL CREEK 8975 1.9 2.0 95 2.6 2.3 113
POWDER RIVER PASS 9480 4.4 3.6 122 5.7 4.3 133
SHELL CREEK 9580 7.4 5.3 140 6.8 4.7 145
SYLVAN LAKE 8420 5.0 6.9 72 9.3 7.6 122
SYLVAN ROAD 7120 3.6 3.9 92 6.4 7.0 91
TIMBER CREEK 7950 2.3 2.4 96 5.8 3.1 187
YOUNTS PEAK 8350 4.9 5.2 94 6.2 5.5 113
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Basin wide percent of average 106 127
SHOSHONE RIVER
BLACKWATER 9780 9.9 8.4 118 9.5 7.6 125
EVENING STAR 9200 8.2 9.2 89 11.1 8.7 128
KIRWIN 9550 5.6 4.4 127 6.8 4.3 158
MARQUETTE 8760 2.2 -M * 6.7 4.2 160
SYLVAN LAKE 8420 5.0 6.9 72 9.3 7.6 122
SYLVAN ROAD 7120 3.6 3.9 92 6.4 7.0 91
YOUNTS PEAK 8350 4.9 5.2 94 6.2 5.5 113
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Basin wide percent of average 98 125
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.0 1.8 111 3.6 3.5 103
BIG GOOSE 7990 4.0 2.5 160 7.8 3.2 244
BONE SPRINGS DIV 9350 7.6 5.6 136 7.1 5.1 139
BURGESS JUNCTION 7880 4.6 3.7 124 7.4 4.4 168
CLOUD PEAK RESERVOIR 9860 5.9 4.0 148 7.1 5.0 142
DOME LAKE 8880 5.2 4.4 118 8.5 5.1 167
GRAVE SPRINGS 8550 2.5 2.7 93 4.6 3.7 124
HANSEN SAWMILL 8360 2.4 2.2 109 4.3 3.3 130
LITTLE GOOSE 8870 4.9 -M * 8.7 -M *
MIDDLE POWDER 7760 3.5 3.8 92 6.1 5.1 120
POWDER RIVER PASS 9480 4.4 3.6 122 5.7 4.3 133
SOLDIER PARK 8720 3.7 -M * 5.5 -M *
SUCKER CREEK 8880 6.3 3.4 185 7.3 4.7 155
TIE CREEK 6870 2.5 1.2 208 7.7 3.8 203
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Basin wide percent of average 131 151
BELLE FOURCHE
BLIND PARK 6890 1.8 2.1 86 2.9 4.6 63
COLE CANYON 5910 1.3 2.2 59 3.2 3.1 103
NORTH RAPID CREEK 6130 2.4 1.8 133 2.2 3.9 56
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Basin wide percent of average 90 72
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 8.6 -M * 10.3 -M *
CINNABAR PARK 9574 5.1 6.0 85 7.9 7.1 111
COLUMBINE 9160 4.9 5.4 91 7.1 6.9 103
DIVIDE PEAK 8880 5.9 5.4 109 9.2 6.6 139
ELK RIVER 8700 4.2 3.4 124 6.0 5.6 107
JOE WRIGHT 10120 4.6 6.6 70 8.8 8.2 107
NORTH FRENCH CREEK 10130 6.3 8.4 75 7.3 7.9 92
OLD BATTLE 10000 9.1 9.7 94 11.2 10.0 112
SAGE CREEK BASIN 7850 5.4 3.1 174 5.0 3.8 132
SOUTH BRUSH CREEK 8440 2.2 3.1 71 4.7 5.5 85
TOWER 10500 9.1 13.5 67 11.4 11.3 101
WEBBER SPRINGS 9250 6.6 7.1 93 9.9 8.3 119
WILLOW CREEK PASS 9540 3.0 3.8 79 4.7 4.6 102
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Basin wide percent of average 88 109
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.6 6.4 72 6.8 6.6 103
CASPER MTN. 7900 5.7 4.9 116 8.7 5.5 158
DEADMAN HILL 10220 7.6 5.3 143 7.7 5.5 140
DEER PARK 9700 3.3 4.7 70 6.3 7.5 84
LAPRELE CREEK 8375 2.4 3.4 71 4.9 4.5 109
RENO HILL 8400 5.2 4.5 116 6.8 5.3 128
ROACH 9700 5.7 4.6 124 7.8 5.5 142
SAND LAKE 10050 8.3 9.8 85 8.8 7.6 116
SOUTH PASS 9040 4.0 5.2 77 5.2 6.4 81
WINDY PEAK 7900 2.2 2.4 92 4.0 3.9 103
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Basin wide percent of average 96 115
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.2 2.0 210 5.2 4.6 113
DIVIDE PEAK 8880 5.9 5.4 109 9.2 6.6 139
OLD BATTLE 10000 9.1 9.7 94 11.2 10.0 112
SANDSTONE RS 8150 2.5 2.6 96 4.9 5.8 84
WHISKEY PARK 8950 5.6 6.6 85 9.3 8.4 111
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Basin wide percent of average 104 112
UPPER GREEN RIVER
BIG SANDY OPENING 9080 3.0 4.3 70 3.9 4.5 87
BLIND BULL SUM 8650 4.9 7.7 64 5.4 6.9 78
EAST RIM DIVIDE 7930 2.4 3.5 69 4.0 3.7 108
ELKHART PARK G.S. 9400 3.1 3.8 82 4.8 4.6 104
GROS VENTRE SUMMIT 8750 3.2 4.2 76 4.5 4.5 100
GUNSIGHT PASS 9820 3.8 -M * 5.2 -M *
KENDALL R.S. 7740 3.6 3.5 103 5.2 4.3 121
LOOMIS PARK 8240 3.2 4.8 67 5.7 5.3 108
NEW FORK LAKE 8340 3.2 3.0 107 4.5 4.0 112
POCKET CREEK 9360 2.3 -M * 3.7 -M *
SNIDER BASIN 8060 2.6 4.0 65 3.7 4.8 77
SPRING CREEK DIVIDE 9000 5.1 7.4 69 6.7 7.9 85
TRIPLE PEAK 8500 5.4 6.9 78 7.7 7.0 110
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Basin wide percent of average 75 98
LOWER GREEN RIVER
HAMS FORK 7840 2.3 2.8 82 4.4 3.8 116
HEWINTA 9519 2.4 2.3 104 5.2 5.2 100
HICKERSON PARK 9145 3.3 1.6 206 6.4 3.3 194
HOLE-IN-ROCK 9150 2.0 1.6 125 5.7 3.1 184
INDIAN CREEK 9425 5.4 7.2 75 5.9 7.5 79
KELLEY R.S. 8180 3.3 4.6 72 5.8 6.1 95
STEEL CREEK PARK 10200 3.1 4.2 74 5.9 5.4 109
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Basin wide percent of average 90 114
UPPER BEAR RIVER
BUG LAKE 7950 3.9 4.4 89 6.3 6.1 103
HAYDEN FORK 9212 2.9 3.3 88 7.2 6.5 111
KELLEY R.S. 8180 3.3 4.6 72 5.8 6.1 95
LILY LAKE 9156 2.2 3.1 71 5.3 6.0 88
MONTE CRISTO 8960 5.1 5.7 89 6.7 7.8 86
SALT RIVER SUMMIT 7760 2.3 2.9 79 4.1 5.3 77
TRIAL LAKE 9992 4.5 6.1 74 5.4 7.2 75
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Basin wide percent of average 80 91
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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.