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 WEDNESDAY: NOVEMBER 20 , 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 3.7 2.1 176 4.8 4.5 107
BLACK BEAR 8170 9.0 6.7 134 9.4 7.9 119
BLIND BULL SUM 8650 4.8 3.6 133 4.3 4.2 102
COTTONWOOD CREEK 7670 4.2 2.8 150 5.6 5.2 108
EAST RIM DIVIDE 7930 1.8 1.4 129 2.9 2.7 107
GRAND TARGHEE 9260 11.9 8.6 138 9.3 8.9 104
GRANITE CREEK 6770 2.4 1.5 160 4.0 4.0 100
GRASSY LAKE 7265 5.9 4.3 137 7.9 7.2 110
GROS VENTRE SUMMIT 8750 3.9 2.9 134 3.9 3.3 118
GUNSIGHT PASS 9820 4.0 2.5 160 4.1 3.5 117
LEWIS LAKE DIVIDE 7850 5.2 4.7 111 7.0 7.2 97
PHILLIPS BENCH 8200 5.0 3.6 139 6.1 5.4 113
SALT RIVER SUMMIT 7760 1.9 1.2 158* 3.9 3.3 118
SNAKE RIVER STATION 6920 3.4 1.6 212 5.0 4.9 102
SPRING CREEK DIVIDE 9000 3.8 3.6 106 4.5 4.9 92
THUMB DIVIDE 7980 2.6 2.1 124 3.7 4.2 88
TOGWOTEE PASS 9580 6.9 5.2 133 6.1 5.6 109
TWO OCEAN PLATEAU 9240 8.0 6.4 125 6.4 6.2 103
WILLOW CREEK 8380 5.3 3.8 139 8.6 7.2 119
YOUNTS PEAK 8350 -M 3.1 * -M 4.0 *
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Basin Index (%) 137 107
MADISON-GALLATIN
BLACK BEAR 8170 9.0 6.7 134 9.4 7.9 119
CANYON 7870 2.2 1.9 116 3.8 3.7 103
MADISON PLATEAU 7750 3.8 3.5 109 5.6 5.3 106
WEST YELLOWSTONE 6700 2.0 1.2 167 3.0 3.2 94
WHISKEY CREEK 6800 2.6 2.0 130 3.9 4.3 91
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Basin Index (%) 128 105
YELLOWSTONE
BEARTOOTH LAKE 9360 5.3 4.9 108 4.2 4.3 98
BURNT MTN 5880 1.4 .6 233 6.3 4.5 140
CANYON 7870 2.2 1.9 116 3.8 3.7 103
COLE CREEK 7850 4.9 3.4 144 4.3 4.3 100
EVENING STAR 9200 8.0 5.3 151 7.8 6.4 122
FISHER CREEK 9100 8.0 6.3 127 6.9 7.0 99
NORTHEAST ENTRANCE 7350 1.1 1.0 110 2.2 3.3 67
PARKER PEAK 9400 6.8 4.7 145 6.1 4.5 136
SYLVAN LAKE 8420 4.6 3.8 121 6.3 5.6 112
THUMB DIVIDE 7980 2.6 2.1 124 3.7 4.2 88
TWO OCEAN PLATEAU 9240 8.0 6.4 125 6.4 6.2 103
WHITE MILL 8700 5.8 4.5 129 4.9 5.5 89
WOLVERINE 7650 1.4 1.1 127 2.7 3.2 84
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Basin Index (%) 131 105
WIND RIVER
BURROUGHS CREEK 8750 -M 2.8 * -M 3.8 *
CASTLE CREEK 8400 .6 -M * 2.6 -M *
COLD SPRINGS 9630 3.0 1.8 167 4.6 3.0 153
DEER PARK 9700 3.7 3.3 112 4.4 4.7 94
HOBBS PARK 10100 4.5 3.7 122 4.5 3.7 122
KIRWIN 9550 4.4 2.8 157 3.6 3.3 109
LITTLE WARM 9370 3.5 2.2 159 4.6 3.3 139
OWL CREEK 8975 2.1 1.4 150 2.4 1.9 126
SOUTH PASS 9040 3.3 3.0 110 3.9 4.2 93
ST. LAWRENCE ALT 8620 1.6 1.5 107 3.9 2.7 144
TOGWOTEE PASS 9580 6.9 5.2 133 6.1 5.6 109
TOWNSEND CREEK 8700 1.8 1.9 95 3.2 3.5 91
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Basin Index (%) 130 115
BIGHORN BASIN
BALD MTN. 9380 6.9 4.6 150 5.6 4.4 127
BEAR TRAP MEADOW 8200 3.0 1.1 273 4.2 2.7 156
BONE SPRINGS DIV 9350 4.7 4.2 112 4.1 4.2 98
GRAVE SPRINGS 8550 3.9 1.5 260 4.8 3.2 150
KIRWIN 9550 4.4 2.8 157 3.6 3.3 109
MARQUETTE 8760 3.6 -M * 4.7 -M *
MIDDLE POWDER 7760 5.5 2.0 275 5.5 3.8 145
OWL CREEK 8975 2.1 1.4 150 2.4 1.9 126
POWDER RIVER PASS 9480 4.2 2.2 191 4.5 3.4 132
SHELL CREEK 9580 5.0 4.0 125 4.1 3.8 108
TIMBER CREEK 7950 2.2 1.4 157 3.9 2.9 134
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Basin Index (%) 166 127
SHOSHONE RIVER
BLACKWATER 9780 7.8 5.1 153 5.5 5.1 108
EVENING STAR 9200 8.0 5.3 151 7.8 6.4 122
MARQUETTE 8760 3.6 -M * 4.7 -M *
SYLVAN ROAD 7120 2.4 1.6 150 5.0 4.4 114
YOUNTS PEAK 8350 -M 3.1 * -M 4.0 *
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Basin Index (%) 152 115
POWDER RIVER
BEAR TRAP MEADOW 8200 3.0 1.1 273 4.2 2.7 156
CLOUD PEAK RESERVOIR 9860 4.4 3.2 138 5.7 4.1 139
GRAVE SPRINGS 8550 3.9 1.5 260 4.8 3.2 150
HANSEN SAWMILL 8360 3.0 1.1 273 4.3 2.7 159
MIDDLE POWDER 7760 5.5 2.0 275 5.5 3.8 145
POWDER RIVER PASS 9480 4.2 2.2 191 4.5 3.4 132
SOLDIER PARK 8720 2.5 -M * 4.3 -M *
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Basin Index (%) 216 146
TONGUE RIVER
BIG GOOSE 7990 2.7 1.8 150 5.0 3.5 143
BONE SPRINGS DIV 9350 4.7 4.2 112 4.1 4.2 98
BURGESS JUNCTION 7880 3.4 2.5 136 5.1 3.6 142
DOME LAKE 8880 1.8 3.0 60 4.1 4.1 100
LITTLE GOOSE 8870 3.4 -M * 6.0 -M *
SUCKER CREEK 8880 4.9 2.7 181 6.0 4.1 146
TIE CREEK 6870 1.2 .6 200 5.1 3.7 138
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Basin Index (%) 126 127
BELLE FOURCHE
COLE CANYON 5910 1.5 .5 300* 7.7 3.0 257
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Basin Index (%) 300* 257
CHEYENNE RIVER BASIN
BLIND PARK 6890 2.6 1.3 200 8.4 3.8 221
NORTH RAPID CREEK 6130 3.3 1.0 330 8.3 3.3 252
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Basin Index (%) 257 235
UPPER N. PLATTE
ARAPAHO RIDGE 10960 6.2 4.7 132 6.5 5.7 114
BLACKHALL MTN 9820 8.1 -M * 9.3 -M *
COLUMBINE 9160 4.8 3.2 150 7.4 5.4 137
DIVIDE PEAK 8880 4.7 3.4 138 7.8 5.3 147
JOE WRIGHT 10120 3.2 4.8 67 8.0 6.5 123
LAPRELE CREEK 8375 1.1 1.9 58 3.3 3.4 97
MED BOW 10500 7.8 -M * 9.5 -M *
NORTH FRENCH CREEK 10130 7.6 4.9 155 9.4 6.0 157
NEVER SUMMER 10280 5.7 4.2 136 5.7 -M *
OLD BATTLE 10000 8.0 5.9 136 9.5 7.8 122
RAWAH 9020 3.3 1.8 183 6.3 4.1 154
SAGE CREEK BASIN 7850 2.0 1.7 118 4.7 3.6 131
SAND LAKE 10050 7.4 5.4 137 7.9 5.8 136
SOUTH BRUSH CREEK 8440 3.3 1.8 183 5.8 3.9 149
TOWER 10500 10.8 8.7 124 12.7 8.9 143
WEBBER SPRINGS 9250 4.8 3.5 137 7.1 6.0 118
WILLOW CREEK PASS 9540 4.2 2.8 150 4.7 3.6 131
ZIRKEL 9340 4.9 3.4 144 7.9 6.8 116
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Basin Index (%) 132 132
SWEETWATER
DEER PARK 9700 3.7 3.3 112 4.4 4.7 94
LARSEN CREEK 9000 .6 -M * 3.2 -M *
SOUTH PASS 9040 3.3 3.0 110 3.9 4.2 93
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Basin Index (%) 111 93
LOWER N. PLATTE
CASPER MTN. 7900 6.6 2.8 236 6.9 4.5 153
LAPRELE CREEK 8375 1.1 1.9 58 3.3 3.4 97
RENO HILL 8400 6.2 2.6 238 8.1 4.2 193
WINDY PEAK 7900 1.0 1.4 71 3.5 3.0 117
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Basin Index (%) 171 144
LARAMIE RIVER
BROOKLYN LAKE 10240 4.3 3.5 123 5.1 4.5 113
CINNABAR PARK 9574 4.6 3.8 121 6.1 5.2 117
CROW CREEK 8330 1.2 1.2 100 3.8 2.9 131
DEADMAN HILL 10220 5.9 3.7 159 6.5 4.3 151
RAWAH 9020 3.3 1.8 183 6.3 4.1 154
ROACH 9700 4.2 2.9 145 6.2 4.5 138
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Basin Index (%) 139 133
S. PLATTE
BLACK MOUNTAIN 8920 3.0 -M * 4.3 -M *
CROW CREEK 8330 1.2 1.2 100 3.8 2.9 131
DEADMAN HILL 10220 5.9 3.7 159 6.5 4.3 151
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Basin Index (%) 145 143
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.6 .9 289* 5.9 3.7 159
DIVIDE PEAK 8880 4.7 3.4 138 7.8 5.3 147
ELK RIVER 8700 3.9 1.9 205* 6.7 4.5 149
LITTLE SNAKE RIVER 8915 5.1 3.0 170 9.6 7.0 137
OLD BATTLE 10000 8.0 5.9 136 9.5 7.8 122
SAGE CREEK BASIN 7850 2.0 1.7 118 4.7 3.6 131
SANDSTONE RS 8150 2.8 1.2 233* 6.1 4.3 142
WHISKEY PARK 8950 7.9 3.6 219 10.7 5.7 188
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Basin Index (%) 171 146
UPPER GREEN RIVER
BIG SANDY OPENING 9080 2.9 3.0 97 2.9 3.2 91
BLIND BULL SUM 8650 4.8 3.6 133 4.3 4.2 102
EAST RIM DIVIDE 7930 1.8 1.4 129 2.9 2.7 107
ELKHART PARK G.S. 9400 2.6 2.5 104 3.1 3.4 91
GROS VENTRE SUMMIT 8750 3.9 2.9 134 3.9 3.3 118
GUNSIGHT PASS 9820 4.0 2.5 160 4.1 3.5 117
KENDALL R.S. 7740 1.8 1.8 100 3.1 3.1 100
LOOMIS PARK 8240 3.1 2.1 148 4.3 3.7 116
NEW FORK LAKE 8340 1.4 1.7 82 2.0 2.7 74
POCKET CREEK 9360 3.9 -M * 3.2 -M *
SNIDER BASIN 8060 2.0 1.7 118 2.8 3.0 93
SPRING CREEK DIVIDE 9000 3.8 3.6 106 4.5 4.9 92
TRIPLE PEAK 8500 3.8 3.6 106 5.2 5.1 102
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Basin Index (%) 118 101
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 1.7 -M * 3.5 -M *
HAMS FORK 7840 .7 1.4 50 3.1 2.7 115
HEWINTA 9519 .7 1.3 54 3.8 3.6 106
HICKERSON PARK 9145 2.0 1.3 154 3.4 3.2 106
HOLE-IN-ROCK 9150 1.1 1.1 100 3.0 3.0 100
INDIAN CREEK 9425 3.3 4.4 75 4.1 4.6 89
KELLEY R.S. 8180 2.4 2.2 109 3.9 3.8 103
SPIRIT LK 10235 2.3 -M * 4.3 -M *
STEEL CREEK PARK 10200 .7 3.1 23 4.5 4.2 107
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Basin Index (%) 74 103
UPPER BEAR RIVER
BEAR RIVER RS 8777 .9 -M * 3.4 -M *
BUG LAKE 7950 1.7 2.4 71 3.5 4.2 83
BURTS MILLER RANCH 8000 .7 -M * 1.8 -M *
CHALK CREEK #1 8993 4.3 3.7 116 5.5 5.8 95
HAYDEN FORK 9212 1.4 2.1 67 4.7 4.8 98
KELLEY R.S. 8180 2.4 2.2 109 3.9 3.8 103
LILY LAKE 9156 1.9 2.1 90 4.6 4.3 107
MONTE CRISTO 8960 3.3 3.2 103 4.1 5.5 75
SALT RIVER SUMMIT 7760 1.9 1.2 158* 3.9 3.3 118
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Basin Index (%) 100 95
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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.