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: DECEMBER 6 , 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 6.4 4.4 145 8.1 6.8 119
BLACK BEAR 8170 13.0 10.2 127 13.1 11.8 111
BLIND BULL SUM 8650 8.4 5.9 142 7.2 6.4 112
COTTONWOOD CREEK 7670 6.3 5.2 121 8.0 7.6 105
EAST RIM DIVIDE 7930 3.3 2.2 150 4.3 3.8 113
GRAND TARGHEE 9260 16.1 10.2 158 11.4 10.3 111
GRANITE CREEK 6770 4.8 3.0 160 6.3 6.1 103
GRASSY LAKE 7265 8.8 7.2 122 9.9 11.1 89
GROS VENTRE SUMMIT 8750 5.5 4.3 128 5.1 4.5 113
GUNSIGHT PASS 9820 5.9 3.6 164 5.7 4.5 127
LEWIS LAKE DIVIDE 7850 8.2 8.3 99 10.0 11.1 90
PHILLIPS BENCH 8200 7.2 6.6 109 8.4 8.3 101
SALT RIVER SUMMIT 7760 2.9 2.3 126 5.2 4.9 106
SNAKE RIVER STATION 6920 5.0 3.5 143 7.2 7.4 97
SPRING CREEK DIVIDE 9000 6.9 5.8 119 7.2 7.3 99
THUMB DIVIDE 7980 3.9 3.6 108 4.9 6.0 82
TOGWOTEE PASS 9580 8.9 7.9 113 8.3 8.0 104
TWO OCEAN PLATEAU 9240 11.7 9.4 124 9.4 9.0 104
WILLOW CREEK 8380 8.3 6.5 128 11.8 10.6 111
YOUNTS PEAK 8350 -M 4.6 * -M 5.6 *
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Basin Index (%) 129 104
MADISON-GALLATIN
BLACK BEAR 8170 13.0 10.2 127 13.1 11.8 111
CANYON 7870 3.9 3.2 122 5.1 5.4 94
MADISON PLATEAU 7750 6.7 6.1 110 8.4 8.2 102
WEST YELLOWSTONE 6700 3.5 2.4 146 4.7 4.7 100
WHISKEY CREEK 6800 4.4 3.8 116 6.3 6.7 94
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Basin Index (%) 123 102
YELLOWSTONE
BEARTOOTH LAKE 9360 7.9 6.8 116 6.6 6.2 106
BURNT MTN 5880 3.3 1.3 254 8.8 5.5 160
CANYON 7870 3.9 3.2 122 5.1 5.4 94
COLE CREEK 7850 6.7 4.7 143 5.6 5.2 108
EVENING STAR 9200 11.3 7.8 145 11.2 9.3 120
FISHER CREEK 9100 11.8 9.5 124 10.4 10.2 102
NORTHEAST ENTRANCE 7350 3.2 2.0 160 3.8 4.5 84
PARKER PEAK 9400 9.0 6.7 134 8.3 6.2 134
SYLVAN LAKE 8420 6.8 5.9 115 8.4 8.0 105
THUMB DIVIDE 7980 3.9 3.6 108 4.9 6.0 82
TWO OCEAN PLATEAU 9240 11.7 9.4 124 9.4 9.0 104
WHITE MILL 8700 9.2 6.7 137 7.6 7.9 96
WOLVERINE 7650 3.5 2.6 135 3.8 4.5 84
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Basin Index (%) 131 107
WIND RIVER
BURROUGHS CREEK 8750 -M 4.2 * -M 5.4 *
CASTLE CREEK 8400 2.4 -M * 4.3 -M *
COLD SPRINGS 9630 3.9 2.4 162 5.9 3.8 155
DEER PARK 9700 4.7 4.4 107 5.7 6.0 95
HOBBS PARK 10100 5.5 4.9 112 5.2 4.8 108
KIRWIN 9550 6.2 3.6 172 5.2 4.3 121
LITTLE WARM 9370 5.0 3.3 152 5.9 4.6 128
OWL CREEK 8975 2.9 1.8 161 3.0 2.3 130
SOUTH PASS 9040 4.6 4.2 110 4.9 5.9 83
ST. LAWRENCE ALT 8620 2.1 2.2 95 4.7 3.4 138
TOGWOTEE PASS 9580 8.9 7.9 113 8.3 8.0 104
TOWNSEND CREEK 8700 2.2 2.7 81 4.0 4.5 89
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Basin Index (%) 123 111
BIGHORN BASIN
BALD MTN. 9380 8.2 6.1 134 6.6 5.6 118
BEAR TRAP MEADOW 8200 3.4 1.7 200 4.7 3.4 138
BONE SPRINGS DIV 9350 6.4 5.4 119 5.1 5.3 96
GRAVE SPRINGS 8550 4.2 2.1 200 5.3 3.9 136
KIRWIN 9550 6.2 3.6 172 5.2 4.3 121
MARQUETTE 8760 4.5 -M * 5.4 -M *
MIDDLE POWDER 7760 5.5 3.2 172 6.0 4.6 130
OWL CREEK 8975 2.9 1.8 161 3.0 2.3 130
POWDER RIVER PASS 9480 4.9 3.3 148 5.0 4.4 114
SHELL CREEK 9580 6.0 5.1 118 5.5 4.9 112
TIMBER CREEK 7950 3.0 1.8 167 4.7 3.4 138
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Basin Index (%) 149 121
SHOSHONE RIVER
BLACKWATER 9780 10.8 7.5 144 8.0 7.2 111
EVENING STAR 9200 11.3 7.8 145 11.2 9.3 120
MARQUETTE 8760 4.5 -M * 5.4 -M *
SYLVAN ROAD 7120 4.3 3.2 134 7.3 6.6 111
YOUNTS PEAK 8350 -M 4.6 * -M 5.6 *
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Basin Index (%) 143 115
POWDER RIVER
BEAR TRAP MEADOW 8200 3.4 1.7 200 4.7 3.4 138
CLOUD PEAK RESERVOIR 9860 5.5 4.1 134 6.4 5.0 128
GRAVE SPRINGS 8550 4.2 2.1 200 5.3 3.9 136
HANSEN SAWMILL 8360 3.3 1.8 183 4.9 3.2 153
MIDDLE POWDER 7760 5.5 3.2 172 6.0 4.6 130
POWDER RIVER PASS 9480 4.9 3.3 148 5.0 4.4 114
SOLDIER PARK 8720 2.8 -M * 4.8 -M *
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Basin Index (%) 165 132
TONGUE RIVER
BIG GOOSE 7990 3.2 2.7 119 5.5 4.2 131
BONE SPRINGS DIV 9350 6.4 5.4 119 5.1 5.3 96
BURGESS JUNCTION 7880 4.5 3.3 136 6.0 4.4 136
DOME LAKE 8880 2.0 4.0 50 4.6 5.2 88
LITTLE GOOSE 8870 4.2 -M * 6.8 -M *
SUCKER CREEK 8880 5.9 3.5 169 6.9 5.0 138
TIE CREEK 6870 1.4 .9 156 5.8 4.4 132
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Basin Index (%) 118 119
BELLE FOURCHE
COLE CANYON 5910 1.5 .9 167 8.1 3.8 213
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Basin Index (%) 167 213
CHEYENNE RIVER BASIN
BLIND PARK 6890 2.8 1.9 147 9.1 4.6 198
NORTH RAPID CREEK 6130 3.1 1.7 182 8.6 3.9 221
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Basin Index (%) 164 208
UPPER N. PLATTE
ARAPAHO RIDGE 10960 8.0 6.1 131 8.2 7.5 109
BLACKHALL MTN 9820 9.7 -M * 10.8 -M *
COLUMBINE 9160 5.7 5.0 114 8.0 7.7 104
DIVIDE PEAK 8880 5.9 5.2 113 9.0 7.3 123
JOE WRIGHT 10120 4.6 6.5 71 9.7 8.7 111
LAPRELE CREEK 8375 1.4 2.4 58 4.1 4.4 93
MED BOW 10500 8.5 -M * 10.7 -M *
NORTH FRENCH CREEK 10130 8.8 7.8 113 10.5 8.4 125
NEVER SUMMER 10280 7.1 5.6 127 7.1 -M *
OLD BATTLE 10000 9.2 8.5 108 10.3 11.0 94
RAWAH 9020 4.4 2.9 152 7.2 5.3 136
SAGE CREEK BASIN 7850 2.8 2.7 104 5.2 4.9 106
SAND LAKE 10050 8.4 7.8 108 8.9 8.0 111
SOUTH BRUSH CREEK 8440 4.2 3.0 140 6.3 5.2 121
TOWER 10500 12.5 12.4 101 14.1 12.6 112
WEBBER SPRINGS 9250 5.9 5.6 105 8.3 8.4 99
WILLOW CREEK PASS 9540 5.7 3.8 150 6.0 4.8 125
ZIRKEL 9340 7.1 5.2 137 10.0 9.0 111
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Basin Index (%) 112 111
SWEETWATER
DEER PARK 9700 4.7 4.4 107 5.7 6.0 95
LARSEN CREEK 9000 1.2 -M * 3.9 -M *
SOUTH PASS 9040 4.6 4.2 110 4.9 5.9 83
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Basin Index (%) 108 89
LOWER N. PLATTE
CASPER MTN. 7900 6.2 3.8 163 7.0 5.7 123
LAPRELE CREEK 8375 1.4 2.4 58 4.1 4.4 93
RENO HILL 8400 6.6 4.0 165 8.6 5.3 162
WINDY PEAK 7900 1.6 1.9 84 4.6 3.8 121
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Basin Index (%) 131 127
LARAMIE RIVER
BROOKLYN LAKE 10240 5.9 4.7 126 6.9 6.3 110
CINNABAR PARK 9574 5.9 5.8 102 7.2 7.5 96
CROW CREEK 8330 1.9 2.6 73 4.6 3.8 121
DEADMAN HILL 10220 7.1 5.0 142 7.6 5.6 136
RAWAH 9020 4.4 2.9 152 7.2 5.3 136
ROACH 9700 5.6 4.4 127 7.3 6.1 120
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Basin Index (%) 121 118
S. PLATTE
BLACK MOUNTAIN 8920 3.8 -M * 5.8 -M *
CROW CREEK 8330 1.9 2.6 73 4.6 3.8 121
DEADMAN HILL 10220 7.1 5.0 142 7.6 5.6 136
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Basin Index (%) 118 130
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.6 1.9 189 6.7 5.0 134
DIVIDE PEAK 8880 5.9 5.2 113 9.0 7.3 123
ELK RIVER 8700 5.3 3.5 151 8.4 6.2 135
LITTLE SNAKE RIVER 8915 6.0 4.2 143 11.0 9.7 113
OLD BATTLE 10000 9.2 8.5 108 10.3 11.0 94
SAGE CREEK BASIN 7850 2.8 2.7 104 5.2 4.9 106
SANDSTONE RS 8150 3.5 2.5 140 7.0 5.8 121
WHISKEY PARK 8950 9.4 5.6 168 11.9 8.1 147
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Basin Index (%) 134 120
UPPER GREEN RIVER
BIG SANDY OPENING 9080 3.3 3.8 87 3.8 4.4 86
BLIND BULL SUM 8650 8.4 5.9 142 7.2 6.4 112
EAST RIM DIVIDE 7930 3.3 2.2 150 4.3 3.8 113
ELKHART PARK G.S. 9400 4.7 3.7 127 5.0 4.6 109
GROS VENTRE SUMMIT 8750 5.5 4.3 128 5.1 4.5 113
GUNSIGHT PASS 9820 5.9 3.6 164 5.7 4.5 127
KENDALL R.S. 7740 5.1 2.9 176 5.3 4.4 120
LOOMIS PARK 8240 5.0 3.6 139 6.4 5.4 119
NEW FORK LAKE 8340 3.1 2.5 124 3.8 3.6 106
POCKET CREEK 9360 4.3 -M * 3.6 -M *
SNIDER BASIN 8060 3.8 2.9 131 4.4 4.4 100
SPRING CREEK DIVIDE 9000 6.9 5.8 119 7.2 7.3 99
TRIPLE PEAK 8500 6.3 5.4 117 7.8 7.5 104
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Basin Index (%) 132 109
LOWER GREEN RIVER
BLACKS FORK JCT 8870 1.1 -M * 4.4 -M *
BUCK PASTURE 9700 2.4 -M * 5.7 -M *
EF BLACKS FORK GS 9360 1.6 -M * 3.9 -M *
HAMS FORK 7840 1.3 2.6 50 3.7 3.6 103
HEWINTA 9519 1.5 2.1 71 4.6 4.9 94
HICKERSON PARK 9145 2.6 1.6 162 3.6 3.9 92
HOLE-IN-ROCK 9150 1.2 1.8 67 3.8 3.7 103
INDIAN CREEK 9425 5.2 6.5 80 5.6 6.6 85
KELLEY R.S. 8180 3.3 3.5 94 4.4 5.6 79
SPIRIT LK 10235 4.5 -M * 5.4 -M *
STEEL CREEK PARK 10200 -M 4.4 * 5.7 5.6 102
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Basin Index (%) 83 93
UPPER BEAR RIVER
BEAR RIVER RS 8777 1.8 -M * 4.1 -M *
BUG LAKE 7950 3.6 3.8 95 4.7 6.1 77
BURTS MILLER RANCH 8000 1.6 -M * 2.3 -M *
CHALK CREEK #1 8993 5.9 6.4 92 7.5 8.2 91
HAYDEN FORK 9212 2.7 3.2 84 5.9 6.7 88
KELLEY R.S. 8180 3.3 3.5 94 4.4 5.6 79
LILY LAKE 9156 2.7 3.2 84 6.0 5.9 102
MONTE CRISTO 8960 4.9 6.4 77 6.1 7.9 77
SALT RIVER SUMMIT 7760 2.9 2.3 126 5.2 4.9 106
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Basin Index (%) 90 88
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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.