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 TUESDAY: NOVEMBER 29 , 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 5.0 3.8 132 8.3 5.8 143
COTTONWOOD CREEK 7670 3.4 4.3 79 8.0 7.6 105
GRAND TARGHEE 9260 9.9 -M * 9.3 -M *
GRANITE CREEK 6770 3.5 3.2 109 5.5 5.1 108
GRASSY LAKE 7265 5.1 7.2 71 10.3 9.2 112
GROS VENTRE SUMMIT 8750 2.9 3.7 78 4.4 4.1 107
GUNSIGHT PASS 9820 3.6 -M * 5.1 -M *
LEWIS LAKE DIVIDE 7850 6.1 7.2 85 11.2 9.4 119
PHILLIPS BENCH 8200 4.7 6.0 78 7.2 7.1 101
SALT RIVER SUMMIT 7760 2.5 2.4 104 4.7 4.7 100
SNAKE RIVER STATION 6920 4.0 3.7 108 8.5 6.1 139
SPRING CREEK DIVIDE 9000 5.1 6.4 80 6.8 7.0 97
THUMB DIVIDE 7980 4.2 3.8 111 7.0 5.1 137
TOGWOTEE PASS 9580 6.3 6.7 94 7.9 7.0 113
TWO OCEAN PLATEAU 9240 10.9 7.9 138 9.6 7.8 123
WILLOW CREEK 8380 5.0 7.2 69 10.3 8.9 116
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Basin wide percent of average 93 116
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 7.3 6.7 109 7.8 5.6 139
BLACK BEAR 8170 8.8 9.1 97 11.3 10.0 113
CANYON 7870 3.0 3.1 97 5.0 4.6 109
FISHER CREEK 9100 9.6 8.6 112 11.6 9.3 125
MADISON PLATEAU 7750 5.6 5.7 98 9.7 6.8 143
NORTHEAST ENTRANCE 7350 1.8 2.3 78 4.2 3.8 111
PARKER PEAK 9400 6.9 6.4 108 8.9 5.3 168
SYLVAN LAKE 8420 4.5 6.1 74 8.7 6.8 128
THUMB DIVIDE 7980 4.2 3.8 111 7.0 5.1 137
TWO OCEAN PLATEAU 9240 10.9 7.9 138 9.6 7.8 123
WHISKEY CREEK 6800 4.1 3.6 114 7.5 5.6 134
WHITE MILL 8700 5.2 6.2 84 7.5 7.3 103
WOLVERINE 7650 4.1 2.8 146 5.8 4.3 135
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Basin wide percent of average 105 127
WIND RIVER
BURROUGHS CREEK 8750 3.5 3.6 97 4.5 4.7 96
CASTLE CREEK 8400 1.9 -M * 3.0 -M *
COLD SPRINGS 9630 2.4 3.0 80 3.7 4.1 90
DEER PARK 9700 3.0 4.5 67 6.2 6.8 91
HOBBS PARK 10100 4.8 5.1 94 5.0 4.4 114
LITTLE WARM 9370 2.0 3.2 62 4.3 4.4 98
SOUTH PASS 9040 3.6 4.9 73 5.0 5.7 88
ST. LAWRENCE ALT 8620 .9 2.6 35 2.6 3.4 76
TOGWOTEE PASS 9580 6.3 6.7 94 7.9 7.0 113
TOWNSEND CREEK 8700 1.8 2.8 64 4.5 4.4 102
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Basin wide percent of average 78 97
BIGHORN BASIN
BALD MTN. 9380 6.4 5.7 112 6.4 5.1 125
BEAR TRAP MEADOW 8200 1.6 1.6 100 3.5 3.3 106
BLACKWATER 9780 9.2 7.5 123 9.1 6.9 132
BONE SPRINGS DIV 9350 6.9 5.2 133 7.0 4.8 146
EVENING STAR 9200 7.9 8.0 99 10.8 7.8 138
GRAVE SPRINGS 8550 2.1 2.6 81 4.2 3.5 120
KIRWIN 9550 5.2 4.0 130 6.6 4.0 165
MARQUETTE 8760 1.0 -M * 5.8 4.0 145
MIDDLE POWDER 7760 2.4 3.4 71 5.8 4.8 121
OWL CREEK 8975 1.8 1.8 100 2.8 2.2 127
POWDER RIVER PASS 9480 3.8 3.2 119 5.5 4.0 138
SHELL CREEK 9580 7.2 5.0 144 6.6 4.4 150
SYLVAN LAKE 8420 4.5 6.1 74 8.7 6.8 128
SYLVAN ROAD 7120 3.3 3.4 97 6.1 6.3 97
TIMBER CREEK 7950 1.5 2.3 65 5.0 2.9 172
YOUNTS PEAK 8350 4.8 4.5 107 6.2 5.0 124
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Basin wide percent of average 107 132
SHOSHONE RIVER
BLACKWATER 9780 9.2 7.5 123 9.1 6.9 132
EVENING STAR 9200 7.9 8.0 99 10.8 7.8 138
KIRWIN 9550 5.2 4.0 130 6.6 4.0 165
MARQUETTE 8760 1.0 -M * 5.8 4.0 145
SYLVAN LAKE 8420 4.5 6.1 74 8.7 6.8 128
SYLVAN ROAD 7120 3.3 3.4 97 6.1 6.3 97
YOUNTS PEAK 8350 4.8 4.5 107 6.2 5.0 124
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Basin wide percent of average 104 131
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.6 1.6 100 3.5 3.3 106
BIG GOOSE 7990 3.7 2.2 168 7.6 3.0 253
BONE SPRINGS DIV 9350 6.9 5.2 133 7.0 4.8 146
BURGESS JUNCTION 7880 3.7 3.4 109 6.9 4.1 168
CLOUD PEAK RESERVOIR 9860 5.4 3.7 146 7.2 4.8 150
DOME LAKE 8880 5.0 4.0 125 8.0 4.8 167
GRAVE SPRINGS 8550 2.1 2.6 81 4.2 3.5 120
HANSEN SAWMILL 8360 2.5 1.9 132 4.3 3.1 139
LITTLE GOOSE 8870 4.5 -M * 8.4 -M *
MIDDLE POWDER 7760 2.4 3.4 71 5.8 4.8 121
POWDER RIVER PASS 9480 3.8 3.2 119 5.5 4.0 138
SOLDIER PARK 8720 3.5 -M * 5.5 -M *
SUCKER CREEK 8880 5.7 3.1 184 7.0 4.4 159
TIE CREEK 6870 1.9 1.2 158 7.1 3.6 197
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Basin wide percent of average 126 154
BELLE FOURCHE
BLIND PARK 6890 1.9 1.9 100 2.9 4.4 66
COLE CANYON 5910 1.1 2.0 55 2.8 3.0 93
NORTH RAPID CREEK 6130 2.4 1.6 150 2.5 3.7 68
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Basin wide percent of average 98 74
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 7.8 -M * 9.6 -M *
CINNABAR PARK 9574 4.3 5.3 81 7.0 6.4 109
COLUMBINE 9160 4.4 4.7 94 6.7 6.1 110
DIVIDE PEAK 8880 4.4 4.8 92 7.8 5.9 132
ELK RIVER 8700 4.0 2.9 138 6.0 5.0 120
JOE WRIGHT 10120 4.0 6.1 66 8.1 7.5 108
NORTH FRENCH CREEK 10130 5.8 7.5 77 6.9 7.2 96
OLD BATTLE 10000 8.2 8.6 95 10.5 8.9 118
SAGE CREEK BASIN 7850 2.9 2.8 104 4.6 3.5 131
SOUTH BRUSH CREEK 8440 2.1 2.7 78 4.8 5.0 96
TOWER 10500 8.2 12.0 68 10.8 10.2 106
WEBBER SPRINGS 9250 5.5 6.3 87 8.7 7.4 118
WILLOW CREEK PASS 9540 2.5 3.4 74 4.4 4.2 105
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Basin wide percent of average 84 112
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.0 5.7 70 6.2 6.0 103
CASPER MTN. 7900 3.9 4.4 89 7.5 5.1 147
DEADMAN HILL 10220 6.7 4.9 137 6.8 5.1 133
DEER PARK 9700 3.0 4.5 67 6.2 6.8 91
LAPRELE CREEK 8375 2.1 3.0 70 4.5 4.1 110
RENO HILL 8400 4.1 4.1 100 6.0 4.9 122
ROACH 9700 4.8 4.1 117 7.0 5.1 137
SAND LAKE 10050 7.4 8.8 84 7.9 6.9 114
SOUTH PASS 9040 3.6 4.9 73 5.0 5.7 88
WINDY PEAK 7900 1.9 2.2 86 3.5 3.6 97
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Basin wide percent of average 89 114
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.9 1.8 217 5.1 4.2 121
DIVIDE PEAK 8880 4.4 4.8 92 7.8 5.9 132
OLD BATTLE 10000 8.2 8.6 95 10.5 8.9 118
SANDSTONE RS 8150 2.3 2.2 105 4.6 5.3 87
WHISKEY PARK 8950 5.2 5.8 90 8.8 7.5 117
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Basin wide percent of average 103 116
UPPER GREEN RIVER
BIG SANDY OPENING 9080 3.2 3.8 84 4.1 4.1 100
BLIND BULL SUM 8650 4.8 6.6 73 5.2 6.1 85
EAST RIM DIVIDE 7930 2.2 3.0 73 4.0 3.4 118
ELKHART PARK G.S. 9400 3.2 3.3 97 5.0 4.2 119
GROS VENTRE SUMMIT 8750 2.9 3.7 78 4.4 4.1 107
GUNSIGHT PASS 9820 3.6 -M * 5.1 -M *
KENDALL R.S. 7740 3.4 3.0 113 5.2 3.9 133
LOOMIS PARK 8240 3.3 4.1 80 5.6 4.7 119
NEW FORK LAKE 8340 3.1 2.6 119 4.5 3.7 122
POCKET CREEK 9360 2.9 -M * 4.0 -M *
SNIDER BASIN 8060 2.7 3.4 79 3.9 4.3 91
SPRING CREEK DIVIDE 9000 5.1 6.4 80 6.8 7.0 97
TRIPLE PEAK 8500 5.3 5.9 90 7.6 6.2 123
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Basin wide percent of average 86 109
LOWER GREEN RIVER
HAMS FORK 7840 2.3 2.3 100 4.3 3.4 126
HEWINTA 9519 1.9 2.1 90 4.9 4.7 104
HICKERSON PARK 9145 2.0 1.4 143 5.5 3.1 177
HOLE-IN-ROCK 9150 1.8 1.4 129 5.0 2.9 172
INDIAN CREEK 9425 5.5 6.3 87 6.4 6.6 97
KELLEY R.S. 8180 3.3 3.9 85 6.1 5.4 113
STEEL CREEK PARK 10200 2.8 3.8 74 5.5 5.0 110
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Basin wide percent of average 92 121
UPPER BEAR RIVER
BUG LAKE 7950 3.7 3.8 97 6.0 5.5 109
HAYDEN FORK 9212 2.7 2.9 93 7.0 5.9 119
KELLEY R.S. 8180 3.3 3.9 85 6.1 5.4 113
LILY LAKE 9156 2.0 2.8 71 5.1 5.5 93
MONTE CRISTO 8960 4.4 4.9 90 6.7 6.9 97
SALT RIVER SUMMIT 7760 2.5 2.4 104 4.7 4.7 100
TRIAL LAKE 9992 4.6 5.3 87 5.5 6.4 86
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Basin wide percent of average 89 102
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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.