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 THURSDAY: NOVEMBER 21 , 2013
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 4.1 2.3 178 5.2 4.7 111
BLACK BEAR 8170 10.6 6.9 154 10.4 8.1 128
BLIND BULL SUM 8650 5.1 3.7 138 4.6 4.3 107
COTTONWOOD CREEK 7670 4.5 2.9 155 5.9 5.4 109
EAST RIM DIVIDE 7930 1.9 1.4 136 3.1 2.7 115
GRAND TARGHEE 9260 12.4 8.8 141 9.6 8.9 108
GRANITE CREEK 6770 2.6 1.5 173 4.2 4.1 102
GRASSY LAKE 7265 6.7 4.5 149 8.4 7.4 114
GROS VENTRE SUMMIT 8750 4.3 2.9 148 4.2 3.3 127
GUNSIGHT PASS 9820 4.2 2.6 162 4.2 3.5 120
LEWIS LAKE DIVIDE 7850 6.3 5.0 126 7.9 7.4 107
PHILLIPS BENCH 8200 5.3 3.8 139 6.4 5.5 116
SALT RIVER SUMMIT 7760 2.2 1.2 183* 4.2 3.4 124
SNAKE RIVER STATION 6920 3.8 1.8 211 5.5 5.0 110
SPRING CREEK DIVIDE 9000 4.1 3.8 108 4.8 5.0 96
THUMB DIVIDE 7980 3.2 2.2 145 4.2 4.3 98
TOGWOTEE PASS 9580 7.2 5.4 133 6.3 5.7 111
TWO OCEAN PLATEAU 9240 8.6 6.7 128 6.9 6.3 110
WILLOW CREEK 8380 5.8 3.9 149 9.0 7.4 122
YOUNTS PEAK 8350 -M 3.2 * -M 4.1 *
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Basin Index (%) 144 112
MADISON-GALLATIN
BLACK BEAR 8170 10.6 6.9 154 10.4 8.1 128
CANYON 7870 2.4 2.0 120 3.8 3.8 100
MADISON PLATEAU 7750 4.9 3.7 132 6.5 5.4 120
WEST YELLOWSTONE 6700 2.4 1.3 185 3.6 3.3 109
WHISKEY CREEK 6800 3.1 2.1 148 4.7 4.5 104
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Basin Index (%) 146 116
YELLOWSTONE
BEARTOOTH LAKE 9360 5.7 5.0 114 4.5 4.3 105
BURNT MTN 5880 1.5 .6 250 6.5 4.6 141
CANYON 7870 2.4 2.0 120 3.8 3.8 100
COLE CREEK 7850 5.2 3.4 153 4.5 4.3 105
EVENING STAR 9200 8.3 5.5 151 8.2 6.6 124
FISHER CREEK 9100 8.9 6.6 135 7.8 7.2 108
NORTHEAST ENTRANCE 7350 1.4 1.1 127 2.4 3.4 71
PARKER PEAK 9400 7.3 4.8 152 6.6 4.6 143
SYLVAN LAKE 8420 4.9 3.9 126 6.6 5.7 116
THUMB DIVIDE 7980 3.2 2.2 145 4.2 4.3 98
TWO OCEAN PLATEAU 9240 8.6 6.7 128 6.9 6.3 110
WHITE MILL 8700 6.2 4.6 135 5.3 5.6 95
WOLVERINE 7650 1.6 1.2 133 3.0 3.3 91
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Basin Index (%) 137 110
WIND RIVER
BURROUGHS CREEK 8750 -M 2.9 * -M 3.8 *
CASTLE CREEK 8400 .9 -M * 2.8 -M *
COLD SPRINGS 9630 3.0 1.8 167 4.6 3.1 148
DEER PARK 9700 3.8 3.4 112 1.5 4.8 31
HOBBS PARK 10100 4.6 3.8 121 4.6 3.7 124
KIRWIN 9550 4.9 2.9 169 3.9 3.3 118
LITTLE WARM 9370 3.7 2.3 161 4.8 3.4 141
OWL CREEK 8975 2.3 1.4 164 2.5 2.0 125
SOUTH PASS 9040 3.3 3.0 110 3.9 4.3 91
ST. LAWRENCE ALT 8620 2.0 1.6 125 4.3 2.8 154
TOGWOTEE PASS 9580 7.2 5.4 133 6.3 5.7 111
TOWNSEND CREEK 8700 2.0 2.0 100 3.4 3.5 97
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Basin Index (%) 133 109
BIGHORN BASIN
BALD MTN. 9380 7.0 4.7 149 5.6 4.4 127
BEAR TRAP MEADOW 8200 3.0 1.1 273 4.3 2.7 159
BONE SPRINGS DIV 9350 5.0 4.3 116 4.3 4.2 102
GRAVE SPRINGS 8550 3.9 1.5 260 4.8 3.2 150
KIRWIN 9550 4.9 2.9 169 3.9 3.3 118
MARQUETTE 8760 3.7 -M * 4.7 -M *
MIDDLE POWDER 7760 5.5 2.0 275 5.5 3.8 145
OWL CREEK 8975 2.3 1.4 164 2.5 2.0 125
POWDER RIVER PASS 9480 4.3 2.2 195 4.6 3.4 135
SHELL CREEK 9580 5.2 4.1 127 4.3 3.8 113
TIMBER CREEK 7950 2.4 1.4 171 4.1 2.9 141
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Basin Index (%) 170 130
SHOSHONE RIVER
BLACKWATER 9780 8.2 5.3 155 5.8 5.2 112
EVENING STAR 9200 8.3 5.5 151 8.2 6.6 124
MARQUETTE 8760 3.7 -M * 4.7 -M *
SYLVAN ROAD 7120 2.6 1.7 153 5.3 4.5 118
YOUNTS PEAK 8350 -M 3.2 * -M 4.1 *
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Basin Index (%) 153 118
POWDER RIVER
BEAR TRAP MEADOW 8200 3.0 1.1 273 4.3 2.7 159
CLOUD PEAK RESERVOIR 9860 4.6 3.3 139 5.8 4.1 141
GRAVE SPRINGS 8550 3.9 1.5 260 4.8 3.2 150
HANSEN SAWMILL 8360 3.0 1.2 250 4.4 2.7 163
MIDDLE POWDER 7760 5.5 2.0 275 5.5 3.8 145
POWDER RIVER PASS 9480 4.3 2.2 195 4.6 3.4 135
SOLDIER PARK 8720 2.7 -M * 4.5 -M *
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Basin Index (%) 215 148
TONGUE RIVER
BIG GOOSE 7990 2.8 1.9 147 5.1 3.5 146
BONE SPRINGS DIV 9350 5.0 4.3 116 4.3 4.2 102
BURGESS JUNCTION 7880 3.6 2.5 144 5.2 3.6 144
DOME LAKE 8880 1.9 3.0 63 4.2 4.2 100
LITTLE GOOSE 8870 3.6 -M * 6.1 -M *
SUCKER CREEK 8880 5.0 2.8 179 6.2 4.1 151
TIE CREEK 6870 1.3 .6 217 5.3 3.7 143
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Basin Index (%) 130 130
BELLE FOURCHE
COLE CANYON 5910 1.1 .6 183 7.7 3.1 248
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Basin Index (%) 183 248
CHEYENNE RIVER BASIN
BLIND PARK 6890 2.5 1.3 192 8.4 3.9 215
NORTH RAPID CREEK 6130 3.3 1.0 330 8.4 3.3 255
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Basin Index (%) 252 233
UPPER N. PLATTE
ARAPAHO RIDGE 10960 6.3 4.8 131 6.6 5.8 114
BLACKHALL MTN 9820 8.2 -M * 9.5 -M *
COLUMBINE 9160 4.9 3.4 144 7.5 5.5 136
DIVIDE PEAK 8880 4.8 3.5 137 7.9 5.5 144
JOE WRIGHT 10120 3.0 4.8 62 7.9 6.6 120
LAPRELE CREEK 8375 1.0 1.9 53 3.3 3.4 97
MED BOW 10500 7.8 -M * 9.5 -M *
NORTH FRENCH CREEK 10130 7.6 5.0 152 9.4 6.1 154
NEVER SUMMER 10280 5.8 4.2 138 5.7 -M *
OLD BATTLE 10000 8.0 6.1 131 9.5 8.0 119
RAWAH 9020 3.3 1.9 174 6.3 4.2 150
SAGE CREEK BASIN 7850 2.0 1.7 118 4.7 3.6 131
SAND LAKE 10050 7.4 5.5 135 7.9 5.9 134
SOUTH BRUSH CREEK 8440 3.3 1.9 174 5.8 4.0 145
TOWER 10500 10.9 9.0 121 12.8 9.1 141
WEBBER SPRINGS 9250 4.8 3.7 130 7.1 6.1 116
WILLOW CREEK PASS 9540 4.2 2.9 145 4.7 3.6 131
ZIRKEL 9340 4.9 3.4 144 8.0 6.9 116
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Basin Index (%) 129 130
SWEETWATER
DEER PARK 9700 3.8 3.4 112 1.5 4.8 31
LARSEN CREEK 9000 .6 -M * 3.2 -M *
SOUTH PASS 9040 3.3 3.0 110 3.9 4.3 91
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Basin Index (%) 111 59
LOWER N. PLATTE
CASPER MTN. 7900 6.8 2.9 234 7.0 4.5 156
LAPRELE CREEK 8375 1.0 1.9 53 3.3 3.4 97
RENO HILL 8400 6.2 2.6 238 7.9 4.2 188
WINDY PEAK 7900 1.1 1.4 79 3.7 3.0 123
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Basin Index (%) 172 145
LARAMIE RIVER
BROOKLYN LAKE 10240 4.4 3.6 122 5.2 4.6 113
CINNABAR PARK 9574 4.6 4.0 115 6.2 5.4 115
CROW CREEK 8330 1.2 1.2 100 3.8 3.0 127
DEADMAN HILL 10220 6.0 3.8 158 6.6 4.4 150
RAWAH 9020 3.3 1.9 174 6.3 4.2 150
ROACH 9700 4.2 3.0 140 6.2 4.6 135
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Basin Index (%) 135 131
S. PLATTE
BLACK MOUNTAIN 8920 3.0 -M * 4.3 -M *
CROW CREEK 8330 1.2 1.2 100 3.8 3.0 127
DEADMAN HILL 10220 6.0 3.8 158 6.6 4.4 150
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Basin Index (%) 144 141
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.7 .9 300* 6.0 3.8 158
DIVIDE PEAK 8880 4.8 3.5 137 7.9 5.5 144
ELK RIVER 8700 3.9 2.0 195 6.8 4.6 148
LITTLE SNAKE RIVER 8915 5.1 3.0 170 9.7 7.0 139
OLD BATTLE 10000 8.0 6.1 131 9.5 8.0 119
SAGE CREEK BASIN 7850 2.0 1.7 118 4.7 3.6 131
SANDSTONE RS 8150 2.8 1.2 233* 6.2 4.3 144
WHISKEY PARK 8950 7.9 3.7 214 10.7 5.8 184
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Basin Index (%) 168 144
UPPER GREEN RIVER
BIG SANDY OPENING 9080 3.0 3.0 100 2.9 3.3 88
BLIND BULL SUM 8650 5.1 3.7 138 4.6 4.3 107
EAST RIM DIVIDE 7930 1.9 1.4 136 3.1 2.7 115
ELKHART PARK G.S. 9400 3.0 2.6 115 3.2 3.4 94
GROS VENTRE SUMMIT 8750 4.3 2.9 148 4.2 3.3 127
GUNSIGHT PASS 9820 4.2 2.6 162 4.2 3.5 120
KENDALL R.S. 7740 1.9 1.8 106 3.1 3.2 97
LOOMIS PARK 8240 3.2 2.1 152 4.4 3.7 119
NEW FORK LAKE 8340 1.4 1.8 78 2.0 2.8 71
POCKET CREEK 9360 4.1 -M * 3.3 -M *
SNIDER BASIN 8060 2.2 1.8 122 2.9 3.0 97
SPRING CREEK DIVIDE 9000 4.1 3.8 108 4.8 5.0 96
TRIPLE PEAK 8500 3.9 3.8 103 5.4 5.2 104
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Basin Index (%) 122 103
LOWER GREEN RIVER
BLACKS FORK JCT 8870 .0 -M * 3.4 -M *
BUCK PASTURE 9700 2.1 -M * 4.4 -M *
EF BLACKS FORK GS 9360 1.8 -M * 3.6 -M *
HAMS FORK 7840 .8 1.5 53 3.3 2.7 122
HEWINTA 9519 .9 1.4 64 3.9 3.7 105
HICKERSON PARK 9145 2.1 1.3 162 3.6 3.2 112
HOLE-IN-ROCK 9150 1.1 1.2 92 3.2 3.1 103
INDIAN CREEK 9425 3.6 4.6 78 4.4 4.7 94
KELLEY R.S. 8180 2.6 2.3 113 4.2 3.9 108
SPIRIT LK 10235 2.4 -M * 4.4 -M *
STEEL CREEK PARK 10200 .9 3.1 29 4.6 4.2 110
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Basin Index (%) 78 107
UPPER BEAR RIVER
BEAR RIVER RS 8777 1.0 -M * 3.4 -M *
BUG LAKE 7950 2.3 2.5 92 3.7 4.3 86
BURTS MILLER RANCH 8000 .7 -M * 1.9 -M *
CHALK CREEK #1 8993 4.5 3.8 118 5.6 6.0 93
HAYDEN FORK 9212 1.4 2.2 64 4.8 4.9 98
KELLEY R.S. 8180 2.6 2.3 113 4.2 3.9 108
LILY LAKE 9156 2.0 2.2 91 4.6 4.4 105
MONTE CRISTO 8960 3.5 3.4 103 4.3 5.6 77
SALT RIVER SUMMIT 7760 2.2 1.2 183* 4.2 3.4 124
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Basin Index (%) 105 97
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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.
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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.