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: DECEMBER 12 , 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 6.9 5.1 135 8.5 7.6 112
BLACK BEAR 8170 13.6 12.3 111 13.8 13.3 104
BLIND BULL SUM 8650 8.7 6.6 132 7.6 7.1 107
COTTONWOOD CREEK 7670 6.7 5.9 114 8.3 8.4 99
EAST RIM DIVIDE 7930 4.6 2.6 177 4.7 4.1 115
GRAND TARGHEE 9260 17.0 11.4 149 12.6 10.9 116
GRANITE CREEK 6770 5.1 3.9 131 6.6 6.8 97
GRASSY LAKE 7265 9.4 8.6 109 11.1 12.3 90
GROS VENTRE SUMMIT 8750 5.7 4.5 127 5.4 4.8 112
GUNSIGHT PASS 9820 6.3 4.1 154 6.3 4.8 131
LEWIS LAKE DIVIDE 7850 8.6 9.2 93 10.9 12.5 87
PHILLIPS BENCH 8200 7.9 7.5 105 9.0 9.4 96
SALT RIVER SUMMIT 7760 3.4 3.0 113 5.6 5.5 102
SNAKE RIVER STATION 6920 5.3 4.3 123 7.6 8.2 93
SPRING CREEK DIVIDE 9000 7.3 6.6 111 7.8 8.1 96
THUMB DIVIDE 7980 4.5 4.0 112 5.4 6.6 82
TOGWOTEE PASS 9580 9.4 8.4 112 8.9 8.9 100
TWO OCEAN PLATEAU 9240 11.9 10.2 117 9.9 9.8 101
WILLOW CREEK 8380 8.7 7.5 116 12.3 11.7 105
YOUNTS PEAK 8350 -M 5.1 * -M 6.0 *
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Basin Index (%) 120 101
MADISON-GALLATIN
BLACK BEAR 8170 13.6 12.3 111 13.8 13.3 104
CANYON 7870 4.0 3.5 114 5.6 5.8 97
MADISON PLATEAU 7750 7.3 7.1 103 8.8 9.1 97
WEST YELLOWSTONE 6700 3.8 2.8 136 5.1 5.0 102
WHISKEY CREEK 6800 5.0 4.2 119 6.9 7.4 93
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Basin Index (%) 113 99
YELLOWSTONE
BEARTOOTH LAKE 9360 8.4 7.4 114 7.0 6.8 103
BURNT MTN 5880 3.7 1.5 247 9.5 5.8 164
CANYON 7870 4.0 3.5 114 5.6 5.8 97
COLE CREEK 7850 7.5 5.3 142 6.1 5.5 111
EVENING STAR 9200 11.6 8.4 138 12.0 10.1 119
FISHER CREEK 9100 12.6 10.5 120 11.2 11.3 99
NORTHEAST ENTRANCE 7350 3.2 2.4 133 4.1 4.8 85
PARKER PEAK 9400 9.5 7.2 132 9.1 6.7 136
SYLVAN LAKE 8420 7.6 6.5 117 9.3 8.7 107
THUMB DIVIDE 7980 4.5 4.0 112 5.4 6.6 82
TWO OCEAN PLATEAU 9240 11.9 10.2 117 9.9 9.8 101
WHITE MILL 8700 9.5 7.1 134 7.9 8.6 92
WOLVERINE 7650 4.0 3.1 129 4.1 4.9 84
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Basin Index (%) 127 106
WIND RIVER
BURROUGHS CREEK 8750 -M 4.7 * -M 6.0 *
CASTLE CREEK 8400 2.6 -M * 4.4 -M *
COLD SPRINGS 9630 4.2 2.6 162 6.2 4.2 148
DEER PARK 9700 4.6 4.8 96 6.1 6.7 91
HOBBS PARK 10100 5.9 5.5 107 5.9 5.2 113
KIRWIN 9550 6.4 3.9 164 5.5 4.6 120
LITTLE WARM 9370 5.1 3.5 146 6.5 5.0 130
OWL CREEK 8975 3.1 2.0 155 3.2 2.5 128
SOUTH PASS 9040 4.9 4.9 100 5.4 6.6 82
ST. LAWRENCE ALT 8620 2.5 2.5 100 5.0 3.7 135
TOGWOTEE PASS 9580 9.4 8.4 112 8.9 8.9 100
TOWNSEND CREEK 8700 2.5 3.0 83 4.1 5.0 82
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Basin Index (%) 118 108
BIGHORN BASIN
BALD MTN. 9380 8.9 6.5 137 7.6 6.0 127
BEAR TRAP MEADOW 8200 3.6 1.8 200 5.0 3.6 139
BONE SPRINGS DIV 9350 6.8 5.8 117 5.5 5.6 98
GRAVE SPRINGS 8550 3.8 2.3 165 5.4 4.1 132
KIRWIN 9550 6.4 3.9 164 5.5 4.6 120
MARQUETTE 8760 4.5 -M * 5.7 -M *
MIDDLE POWDER 7760 5.5 3.4 162 6.0 4.9 122
OWL CREEK 8975 3.1 2.0 155 3.2 2.5 128
POWDER RIVER PASS 9480 5.1 3.5 146 5.4 4.7 115
SHELL CREEK 9580 6.3 5.4 117 5.6 5.2 108
TIMBER CREEK 7950 3.2 2.0 160 4.7 3.4 138
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Basin Index (%) 144 121
SHOSHONE RIVER
BLACKWATER 9780 11.3 7.9 143 8.8 7.9 111
EVENING STAR 9200 11.6 8.4 138 12.0 10.1 119
MARQUETTE 8760 4.5 -M * 5.7 -M *
SYLVAN ROAD 7120 4.7 3.7 127 8.0 7.1 113
YOUNTS PEAK 8350 -M 5.1 * -M 6.0 *
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Basin Index (%) 138 115
POWDER RIVER
BEAR TRAP MEADOW 8200 3.6 1.8 200 5.0 3.6 139
CLOUD PEAK RESERVOIR 9860 6.3 4.5 140 6.8 5.2 131
GRAVE SPRINGS 8550 3.8 2.3 165 5.4 4.1 132
HANSEN SAWMILL 8360 3.5 2.0 175 5.2 3.4 153
MIDDLE POWDER 7760 5.5 3.4 162 6.0 4.9 122
POWDER RIVER PASS 9480 5.1 3.5 146 5.4 4.7 115
SOLDIER PARK 8720 3.0 -M * 5.0 -M *
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Basin Index (%) 159 131
TONGUE RIVER
BIG GOOSE 7990 3.8 2.9 131 6.4 4.4 145
BONE SPRINGS DIV 9350 6.8 5.8 117 5.5 5.6 98
BURGESS JUNCTION 7880 4.8 3.5 137 6.5 4.7 138
DOME LAKE 8880 2.7 4.2 64 4.9 5.5 89
LITTLE GOOSE 8870 -M -M * -M -M *
SUCKER CREEK 8880 6.3 3.9 162 7.5 5.3 142
TIE CREEK 6870 2.0 1.1 182 6.2 4.6 135
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Basin Index (%) 123 123
BELLE FOURCHE
COLE CANYON 5910 2.0 1.1 182 8.9 3.9 228
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Basin Index (%) 182 228
CHEYENNE RIVER BASIN
BLIND PARK 6890 3.2 2.0 160 9.2 4.8 192
NORTH RAPID CREEK 6130 3.9 2.1 186 9.0 4.1 220
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Basin Index (%) 173 204
UPPER N. PLATTE
ARAPAHO RIDGE 10960 8.3 6.9 120 8.6 8.5 101
BLACKHALL MTN 9820 10.7 -M * 12.3 -M *
COLUMBINE 9160 6.2 5.8 107 8.9 8.6 103
DIVIDE PEAK 8880 6.3 5.7 111 9.8 7.8 126
JOE WRIGHT 10120 6.5 7.2 90 10.2 9.4 109
LAPRELE CREEK 8375 2.0 2.8 71 4.4 4.7 94
MED BOW 10500 9.4 -M * 11.8 -M *
NORTH FRENCH CREEK 10130 9.5 8.6 110 11.2 9.0 124
NEVER SUMMER 10280 7.9 6.2 127 7.5 -M *
OLD BATTLE 10000 10.1 9.2 110 11.8 12.2 97
RAWAH 9020 4.7 3.2 147 7.6 5.8 131
SAGE CREEK BASIN 7850 3.6 3.6 100 5.6 5.4 104
SAND LAKE 10050 9.5 8.6 110 9.9 8.6 115
SOUTH BRUSH CREEK 8440 4.4 3.3 133 6.9 5.5 125
TOWER 10500 13.1 14.0 94 15.5 14.0 111
WEBBER SPRINGS 9250 6.6 6.8 97 9.2 9.2 100
WILLOW CREEK PASS 9540 6.0 4.0 150 6.6 5.2 127
ZIRKEL 9340 7.7 6.4 120 10.9 10.2 107
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Basin Index (%) 110 110
SWEETWATER
DEER PARK 9700 4.6 4.8 96 6.1 6.7 91
LARSEN CREEK 9000 1.6 -M * 4.4 -M *
SOUTH PASS 9040 4.9 4.9 100 5.4 6.6 82
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Basin Index (%) 98 86
LOWER N. PLATTE
CASPER MTN. 7900 6.5 4.2 155 7.5 6.1 123
LAPRELE CREEK 8375 2.0 2.8 71 4.4 4.7 94
RENO HILL 8400 7.0 4.5 156 9.1 5.7 160
WINDY PEAK 7900 2.2 2.2 100 4.7 4.1 115
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Basin Index (%) 129 125
LARAMIE RIVER
BROOKLYN LAKE 10240 6.8 5.7 119 7.7 7.0 110
CINNABAR PARK 9574 6.7 6.8 99 8.6 8.5 101
CROW CREEK 8330 2.3 3.4 68 4.7 4.3 109
DEADMAN HILL 10220 7.6 5.2 146 8.2 6.1 134
RAWAH 9020 4.7 3.2 147 7.6 5.8 131
ROACH 9700 5.9 4.7 126 8.2 6.8 121
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Basin Index (%) 117 117
S. PLATTE
BLACK MOUNTAIN 8920 4.2 -M * 5.6 -M *
CROW CREEK 8330 2.3 3.4 68 4.7 4.3 109
DEADMAN HILL 10220 7.6 5.2 146 8.2 6.1 134
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Basin Index (%) 115 124
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.1 2.4 171 7.4 5.4 137
DIVIDE PEAK 8880 6.3 5.7 111 9.8 7.8 126
ELK RIVER 8700 5.8 4.3 135 8.6 6.8 126
LITTLE SNAKE RIVER 8915 7.0 4.9 143 12.1 11.0 110
OLD BATTLE 10000 10.1 9.2 110 11.8 12.2 97
SAGE CREEK BASIN 7850 3.6 3.6 100 5.6 5.4 104
SANDSTONE RS 8150 3.9 3.1 126 7.6 6.4 119
WHISKEY PARK 8950 9.9 6.8 146 12.8 8.9 144
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Basin Index (%) 127 118
UPPER GREEN RIVER
BIG SANDY OPENING 9080 3.9 4.3 91 4.0 4.9 82
BLIND BULL SUM 8650 8.7 6.6 132 7.6 7.1 107
EAST RIM DIVIDE 7930 4.6 2.6 177 4.7 4.1 115
ELKHART PARK G.S. 9400 5.2 4.0 130 5.6 4.9 114
GROS VENTRE SUMMIT 8750 5.7 4.5 127 5.4 4.8 112
GUNSIGHT PASS 9820 6.3 4.1 154 6.3 4.8 131
KENDALL R.S. 7740 5.1 3.3 155 6.0 4.8 125
LOOMIS PARK 8240 5.3 4.1 129 6.7 6.0 112
NEW FORK LAKE 8340 3.7 3.0 123 4.2 4.0 105
POCKET CREEK 9360 4.6 -M * 3.9 -M *
SNIDER BASIN 8060 4.0 3.4 118 5.0 4.8 104
SPRING CREEK DIVIDE 9000 7.3 6.6 111 7.8 8.1 96
TRIPLE PEAK 8500 6.6 5.9 112 8.3 8.4 99
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Basin Index (%) 127 107
LOWER GREEN RIVER
BLACKS FORK JCT 8870 1.6 -M * 4.6 -M *
BUCK PASTURE 9700 2.9 -M * 5.7 -M *
EF BLACKS FORK GS 9360 1.6 -M * 4.1 -M *
HAMS FORK 7840 1.6 3.0 53 3.9 4.0 98
HEWINTA 9519 1.5 2.4 62 4.8 5.3 91
HICKERSON PARK 9145 2.8 1.9 147 4.3 4.2 102
HOLE-IN-ROCK 9150 1.9 2.1 90 4.0 4.0 100
INDIAN CREEK 9425 5.8 7.1 82 6.3 7.3 86
KELLEY R.S. 8180 3.6 4.0 90 5.3 6.2 85
SPIRIT LK 10235 3.4 -M * 6.0 -M *
STEEL CREEK PARK 10200 7.1 5.0 142 5.9 6.0 98
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Basin Index (%) 95 93
UPPER BEAR RIVER
BEAR RIVER RS 8777 2.0 -M * 4.6 -M *
BUG LAKE 7950 4.3 4.6 93 5.2 6.9 75
BURTS MILLER RANCH 8000 2.1 -M * 2.8 -M *
CHALK CREEK #1 8993 6.6 7.5 88 8.0 9.1 88
HAYDEN FORK 9212 2.9 3.7 78 6.3 7.4 85
KELLEY R.S. 8180 3.6 4.0 90 5.3 6.2 85
LILY LAKE 9156 3.1 3.8 82 6.0 6.4 94
MONTE CRISTO 8960 5.7 7.2 79 6.8 8.9 76
SALT RIVER SUMMIT 7760 3.4 3.0 113 5.6 5.5 102
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Basin Index (%) 88 86
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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.