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: NOVEMBER 18 , 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 3.5 2.4 146 6.6 4.1 161
COTTONWOOD CREEK 7670 1.9 2.7 70 6.4 5.7 112
GRAND TARGHEE 9260 8.1 -M * 7.9 -M *
GRANITE CREEK 6770 2.0 1.9 105 4.0 3.6 111
GRASSY LAKE 7265 3.0 4.5 67 8.5 6.6 129
GROS VENTRE SUMMIT 8750 1.8 2.7 67 3.5 3.2 109
GUNSIGHT PASS 9820 2.5 -M * 4.2 -M *
LEWIS LAKE DIVIDE 7850 3.5 4.5 78 8.5 6.6 129
PHILLIPS BENCH 8200 3.1 4.0 78 5.6 4.9 114
SALT RIVER SUMMIT 7760 1.6 1.4 114* 3.7 3.5 106
SNAKE RIVER STATION 6920 2.6 2.2 118 6.8 4.4 155
SPRING CREEK DIVIDE 9000 3.4 4.2 81 5.2 5.1 102
THUMB DIVIDE 7980 2.7 2.4 112 5.4 3.8 142
TOGWOTEE PASS 9580 4.9 5.0 98 6.6 5.2 127
TWO OCEAN PLATEAU 9240 8.5 5.9 144 7.2 5.8 124
WILLOW CREEK 8380 2.6 4.9 53 7.9 6.7 118
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Basin wide percent of average 93 124
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 6.0 4.9 122 6.4 4.0 160
BLACK BEAR 8170 6.8 6.1 111 9.6 7.3 132
CANYON 7870 2.0 1.9 105 3.9 3.5 111
FISHER CREEK 9100 6.7 5.8 116 9.3 6.7 139
MADISON PLATEAU 7750 4.1 3.6 114 8.1 4.9 165
NORTHEAST ENTRANCE 7350 1.3 1.3 100 3.5 2.9 121
PARKER PEAK 9400 5.4 4.7 115 7.3 4.0 182
SYLVAN LAKE 8420 3.4 4.2 81 7.4 4.9 151
THUMB DIVIDE 7980 2.7 2.4 112 5.4 3.8 142
TWO OCEAN PLATEAU 9240 8.5 5.9 144 7.2 5.8 124
WHISKEY CREEK 6800 2.9 2.2 132 6.3 4.2 150
WHITE MILL 8700 3.9 4.2 93 6.3 5.3 119
WOLVERINE 7650 3.6 1.6 225 4.8 3.2 150
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Basin wide percent of average 117 141
WIND RIVER
BURROUGHS CREEK 8750 2.5 2.5 100 3.5 3.4 103
CASTLE CREEK 8400 1.4 -M * 2.5 -M *
COLD SPRINGS 9630 1.5 2.3 65 2.9 3.3 88
DEER PARK 9700 2.2 3.7 59 5.0 5.2 96
HOBBS PARK 10100 3.7 4.0 92 4.0 3.6 111
LITTLE WARM 9370 1.1 2.3 48 3.1 3.4 91
SOUTH PASS 9040 2.6 3.4 76 4.0 4.2 95
ST. LAWRENCE ALT 8620 .6 1.9 32 2.1 2.8 75
TOGWOTEE PASS 9580 4.9 5.0 98 6.6 5.2 127
TOWNSEND CREEK 8700 1.5 2.1 71 4.0 3.5 114
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Basin wide percent of average 76 102
BIGHORN BASIN
BALD MTN. 9380 5.5 4.6 120 5.5 4.1 134
BEAR TRAP MEADOW 8200 1.3 1.2 108 3.3 2.8 118
BLACKWATER 9780 6.9 5.4 128 6.6 5.0 132
BONE SPRINGS DIV 9350 5.9 4.3 137 6.0 3.9 154
EVENING STAR 9200 5.6 5.5 102 8.7 5.7 153
GRAVE SPRINGS 8550 1.0 2.1 48 3.2 3.0 107
KIRWIN 9550 4.3 3.1 139 5.6 3.2 175
MARQUETTE 8760 1.0 -M * 4.9 3.4 144
MIDDLE POWDER 7760 1.9 2.5 76 5.4 4.0 135
OWL CREEK 8975 1.4 1.5 93 2.5 1.8 139
POWDER RIVER PASS 9480 3.3 2.4 138 4.9 3.2 153
SHELL CREEK 9580 6.1 4.1 149 5.7 3.5 163
SYLVAN LAKE 8420 3.4 4.2 81 7.4 4.9 151
SYLVAN ROAD 7120 2.1 1.9 111 4.5 4.5 100
TIMBER CREEK 7950 1.1 2.0 55 4.6 2.6 177
YOUNTS PEAK 8350 3.8 3.0 127 5.1 3.7 138
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Basin wide percent of average 112 141
SHOSHONE RIVER
BLACKWATER 9780 6.9 5.4 128 6.6 5.0 132
EVENING STAR 9200 5.6 5.5 102 8.7 5.7 153
KIRWIN 9550 4.3 3.1 139 5.6 3.2 175
MARQUETTE 8760 1.0 -M * 4.9 3.4 144
SYLVAN LAKE 8420 3.4 4.2 81 7.4 4.9 151
SYLVAN ROAD 7120 2.1 1.9 111 4.5 4.5 100
YOUNTS PEAK 8350 3.8 3.0 127 5.1 3.7 138
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Basin wide percent of average 113 141
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.3 1.2 108 3.3 2.8 118
BIG GOOSE 7990 3.0 1.6 188 6.6 2.7 244
BONE SPRINGS DIV 9350 5.9 4.3 137 6.0 3.9 154
BURGESS JUNCTION 7880 3.1 2.7 115 6.1 3.4 179
CLOUD PEAK RESERVOIR 9860 4.4 2.8 157 6.2 4.1 151
DOME LAKE 8880 4.0 3.3 121 7.0 4.0 175
GRAVE SPRINGS 8550 1.0 2.1 48 3.2 3.0 107
HANSEN SAWMILL 8360 1.7 1.4 121 3.5 2.7 130
LITTLE GOOSE 8870 3.7 -M * 7.3 -M *
MIDDLE POWDER 7760 1.9 2.5 76 5.4 4.0 135
POWDER RIVER PASS 9480 3.3 2.4 138 4.9 3.2 153
SOLDIER PARK 8720 2.5 -M * 4.5 -M *
SUCKER CREEK 8880 5.2 2.5 208 6.3 3.7 170
TIE CREEK 6870 1.4 1.1 127 6.5 3.2 203
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Basin wide percent of average 130 160
BELLE FOURCHE
BLIND PARK 6890 1.1 1.5 73 2.0 3.8 53
COLE CANYON 5910 .3 1.6 19 1.9 2.6 73
NORTH RAPID CREEK 6130 1.5 1.1 136 1.4 3.4 41
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Basin wide percent of average 69 54
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 5.8 -M * 7.6 -M *
CINNABAR PARK 9574 3.0 3.8 79 5.6 4.9 114
COLUMBINE 9160 3.0 3.1 97 5.5 4.5 122
DIVIDE PEAK 8880 3.5 3.5 100 6.7 4.6 146
ELK RIVER 8700 2.3 1.8 128* 4.4 3.8 116
JOE WRIGHT 10120 3.4 4.8 71 6.8 5.9 115
NORTH FRENCH CREEK 10130 4.4 5.7 77 5.5 5.8 95
OLD BATTLE 10000 6.3 6.3 100 8.3 6.6 126
SAGE CREEK BASIN 7850 2.1 2.0 105 3.8 2.7 141
SOUTH BRUSH CREEK 8440 1.4 1.9 74 4.2 4.2 100
TOWER 10500 6.0 8.6 70 8.5 7.6 112
WEBBER SPRINGS 9250 4.2 4.5 93 7.2 5.6 129
WILLOW CREEK PASS 9540 2.3 2.6 88 3.7 3.4 109
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Basin wide percent of average 86 118
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 2.8 4.2 67 5.0 4.6 109
CASPER MTN. 7900 3.0 3.4 88 6.6 4.2 157
DEADMAN HILL 10220 5.6 3.9 144 5.6 4.1 137
DEER PARK 9700 2.2 3.7 59 5.0 5.2 96
LAPRELE CREEK 8375 1.7 2.2 77 4.0 3.3 121
RENO HILL 8400 3.1 3.1 100 5.1 4.1 124
ROACH 9700 3.7 2.9 128 5.8 4.0 145
SAND LAKE 10050 5.7 6.6 86 6.4 5.3 121
SOUTH PASS 9040 2.6 3.4 76 4.0 4.2 95
WINDY PEAK 7900 1.6 1.5 107 3.1 2.9 107
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Basin wide percent of average 92 121
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.9 1.3 223 4.2 3.3 127
DIVIDE PEAK 8880 3.5 3.5 100 6.7 4.6 146
OLD BATTLE 10000 6.3 6.3 100 8.3 6.6 126
SANDSTONE RS 8150 1.5 1.4 107* 3.5 4.2 83
WHISKEY PARK 8950 3.2 4.1 78 6.7 5.5 122
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Basin wide percent of average 105 121
UPPER GREEN RIVER
BIG SANDY OPENING 9080 2.6 2.7 96 3.5 3.2 109
BLIND BULL SUM 8650 2.6 4.4 59 3.7 4.4 84
EAST RIM DIVIDE 7930 1.2 1.9 63 3.1 2.6 119
ELKHART PARK G.S. 9400 2.1 2.2 95 4.2 3.3 127
GROS VENTRE SUMMIT 8750 1.8 2.7 67 3.5 3.2 109
GUNSIGHT PASS 9820 2.5 -M * 4.2 -M *
KENDALL R.S. 7740 2.0 2.0 100 3.9 3.0 130
LOOMIS PARK 8240 1.7 2.7 63 4.1 3.5 117
NEW FORK LAKE 8340 2.2 1.7 129 3.8 2.9 131
POCKET CREEK 9360 2.4 -M * 3.4 -M *
SNIDER BASIN 8060 1.5 2.2 68 2.9 3.2 91
SPRING CREEK DIVIDE 9000 3.4 4.2 81 5.2 5.1 102
TRIPLE PEAK 8500 3.0 3.8 79 5.3 4.5 118
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Basin wide percent of average 79 111
LOWER GREEN RIVER
HAMS FORK 7840 1.1 1.4 79 3.3 2.6 127
HEWINTA 9519 1.1 1.5 73 4.3 3.8 113
HICKERSON PARK 9145 1.4 1.0 140 5.2 2.7 193
HOLE-IN-ROCK 9150 1.4 1.0 140 4.7 2.5 188
INDIAN CREEK 9425 3.7 4.2 88 4.9 4.9 100
KELLEY R.S. 8180 2.2 2.6 85 4.8 4.1 117
STEEL CREEK PARK 10200 2.1 2.9 72 4.8 4.0 120
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Basin wide percent of average 89 130
UPPER BEAR RIVER
BUG LAKE 7950 2.0 2.7 74 4.6 4.2 110
HAYDEN FORK 9212 1.8 2.0 90 5.9 4.5 131
KELLEY R.S. 8180 2.2 2.6 85 4.8 4.1 117
LILY LAKE 9156 1.2 2.0 60 4.2 4.3 98
MONTE CRISTO 8960 3.1 3.4 91 5.3 5.1 104
SALT RIVER SUMMIT 7760 1.6 1.4 114* 3.7 3.5 106
TRIAL LAKE 9992 3.6 3.9 92 4.3 4.9 88
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Basin wide percent of average 86 107
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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.