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 13 , 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 7.0 5.2 135 8.5 7.7 110
BLACK BEAR 8170 13.7 12.6 109 13.8 13.6 101
BLIND BULL SUM 8650 8.8 6.7 131 7.6 7.2 106
COTTONWOOD CREEK 7670 6.7 6.1 110 8.2 8.5 96
EAST RIM DIVIDE 7930 4.7 2.7 174 4.7 4.2 112
GRAND TARGHEE 9260 17.0 11.9 143 12.6 11.2 112
GRANITE CREEK 6770 5.2 4.0 130 6.7 7.0 96
GRASSY LAKE 7265 9.4 8.8 107 11.1 12.6 88
GROS VENTRE SUMMIT 8750 5.7 4.6 124 5.4 4.9 110
GUNSIGHT PASS 9820 6.4 4.1 156 6.3 4.9 129
LEWIS LAKE DIVIDE 7850 8.5 9.3 91 10.8 12.7 85
PHILLIPS BENCH 8200 7.9 7.6 104 9.1 9.6 95
SALT RIVER SUMMIT 7760 3.4 3.1 110 5.6 5.6 100
SNAKE RIVER STATION 6920 5.3 4.4 120 7.6 8.4 90
SPRING CREEK DIVIDE 9000 7.3 6.9 106 7.9 8.3 95
THUMB DIVIDE 7980 4.5 4.1 110 5.4 6.8 79
TOGWOTEE PASS 9580 9.5 8.6 110 8.9 9.0 99
TWO OCEAN PLATEAU 9240 12.0 10.2 118 10.0 10.0 100
WILLOW CREEK 8380 8.8 7.7 114 12.3 11.9 103
YOUNTS PEAK 8350 -M 5.2 * -M 6.1 *
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Basin Index (%) 118 99
MADISON-GALLATIN
BLACK BEAR 8170 13.7 12.6 109 13.8 13.6 101
CANYON 7870 4.0 3.6 111 5.6 5.9 95
MADISON PLATEAU 7750 7.3 7.2 101 8.8 9.3 95
WEST YELLOWSTONE 6700 3.8 2.8 136 5.0 5.2 96
WHISKEY CREEK 6800 4.9 4.3 114 6.9 7.5 92
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Basin Index (%) 110 97
YELLOWSTONE
BEARTOOTH LAKE 9360 8.4 7.4 114 7.1 6.9 103
BURNT MTN 5880 3.7 1.5 247 9.5 5.8 164
CANYON 7870 4.0 3.6 111 5.6 5.9 95
COLE CREEK 7850 7.6 5.4 141 6.2 5.6 111
EVENING STAR 9200 11.7 8.5 138 12.0 10.3 117
FISHER CREEK 9100 12.6 10.8 117 11.2 11.5 97
NORTHEAST ENTRANCE 7350 3.2 2.5 128 4.1 4.9 84
PARKER PEAK 9400 9.6 7.4 130 9.2 6.8 135
SYLVAN LAKE 8420 7.6 6.6 115 9.3 8.8 106
THUMB DIVIDE 7980 4.5 4.1 110 5.4 6.8 79
TWO OCEAN PLATEAU 9240 12.0 10.2 118 10.0 10.0 100
WHITE MILL 8700 9.5 7.3 130 8.0 8.8 91
WOLVERINE 7650 4.0 3.1 129 4.2 4.9 86
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Basin Index (%) 126 105
WIND RIVER
BURROUGHS CREEK 8750 -M 4.7 * -M 6.1 *
CASTLE CREEK 8400 2.6 -M * 4.3 -M *
COLD SPRINGS 9630 4.2 2.6 162 6.0 4.2 143
DEER PARK 9700 4.6 4.8 96 6.2 6.8 91
HOBBS PARK 10100 5.8 5.6 104 5.9 5.2 113
KIRWIN 9550 6.4 3.9 164 5.5 4.7 117
LITTLE WARM 9370 5.1 3.6 142 6.5 5.1 127
OWL CREEK 8975 3.1 2.1 148 3.2 2.5 128
SOUTH PASS 9040 5.0 5.0 100 5.5 6.7 82
ST. LAWRENCE ALT 8620 2.4 2.6 92 5.0 3.7 135
TOGWOTEE PASS 9580 9.5 8.6 110 8.9 9.0 99
TOWNSEND CREEK 8700 2.6 3.1 84 4.1 5.0 82
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Basin Index (%) 116 107
BIGHORN BASIN
BALD MTN. 9380 9.0 6.5 138 7.7 6.1 126
BEAR TRAP MEADOW 8200 3.7 1.9 195 5.1 3.6 142
BONE SPRINGS DIV 9350 6.8 5.9 115 5.5 5.7 96
GRAVE SPRINGS 8550 4.0 2.4 167 5.4 4.1 132
KIRWIN 9550 6.4 3.9 164 5.5 4.7 117
MARQUETTE 8760 4.4 -M * 5.6 -M *
MIDDLE POWDER 7760 5.6 3.4 165 6.1 5.0 122
OWL CREEK 8975 3.1 2.1 148 3.2 2.5 128
POWDER RIVER PASS 9480 5.2 3.6 144 5.5 4.8 115
SHELL CREEK 9580 6.4 5.5 116 5.6 5.3 106
TIMBER CREEK 7950 3.3 2.0 165 4.7 3.5 134
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Basin Index (%) 144 120
SHOSHONE RIVER
BLACKWATER 9780 11.3 8.0 141 8.8 8.0 110
EVENING STAR 9200 11.7 8.5 138 12.0 10.3 117
MARQUETTE 8760 4.4 -M * 5.6 -M *
SYLVAN ROAD 7120 4.7 3.8 124 8.0 7.2 111
YOUNTS PEAK 8350 -M 5.2 * -M 6.1 *
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Basin Index (%) 136 113
POWDER RIVER
BEAR TRAP MEADOW 8200 3.7 1.9 195 5.1 3.6 142
CLOUD PEAK RESERVOIR 9860 6.3 4.6 137 6.4 5.2 123
GRAVE SPRINGS 8550 4.0 2.4 167 5.4 4.1 132
HANSEN SAWMILL 8360 3.4 2.0 170 5.1 3.4 150
MIDDLE POWDER 7760 5.6 3.4 165 6.1 5.0 122
POWDER RIVER PASS 9480 5.2 3.6 144 5.5 4.8 115
SOLDIER PARK 8720 3.0 -M * 5.0 -M *
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Basin Index (%) 158 129
TONGUE RIVER
BIG GOOSE 7990 3.8 3.0 127 6.4 4.5 142
BONE SPRINGS DIV 9350 6.8 5.9 115 5.5 5.7 96
BURGESS JUNCTION 7880 4.7 3.6 131 6.5 4.8 135
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 7.7 5.4 143
TIE CREEK 6870 2.0 1.1 182 6.2 4.6 135
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Basin Index (%) 121 122
BELLE FOURCHE
COLE CANYON 5910 2.2 1.1 200 9.0 4.0 225
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Basin Index (%) 200 225
CHEYENNE RIVER BASIN
BLIND PARK 6890 3.4 2.0 170 9.2 4.8 192
NORTH RAPID CREEK 6130 3.8 2.2 173 9.1 4.1 222
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Basin Index (%) 171 206
UPPER N. PLATTE
ARAPAHO RIDGE 10960 8.4 7.0 120 8.6 8.6 100
BLACKHALL MTN 9820 10.8 -M * 12.0 -M *
COLUMBINE 9160 6.3 6.0 105 9.0 8.8 102
DIVIDE PEAK 8880 6.4 5.8 110 9.8 8.0 122
JOE WRIGHT 10120 6.6 7.4 89 10.2 9.6 106
LAPRELE CREEK 8375 2.2 2.8 79 4.5 4.8 94
MED BOW 10500 9.4 -M * 11.9 -M *
NORTH FRENCH CREEK 10130 9.6 8.7 110 11.2 9.2 122
NEVER SUMMER 10280 7.9 6.3 125 7.4 -M *
OLD BATTLE 10000 10.3 9.4 110 12.0 12.4 97
RAWAH 9020 4.7 3.3 142 7.6 5.8 131
SAGE CREEK BASIN 7850 3.6 3.7 97 5.7 5.5 104
SAND LAKE 10050 9.5 8.8 108 10.0 8.8 114
SOUTH BRUSH CREEK 8440 4.5 3.4 132 7.0 5.6 125
TOWER 10500 13.3 14.4 92 15.7 14.3 110
WEBBER SPRINGS 9250 6.7 7.0 96 9.2 9.4 98
WILLOW CREEK PASS 9540 6.0 4.1 146 6.7 5.3 126
ZIRKEL 9340 7.7 6.6 117 11.0 10.4 106
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Basin Index (%) 109 109
SWEETWATER
DEER PARK 9700 4.6 4.8 96 6.2 6.8 91
LARSEN CREEK 9000 1.7 -M * 4.5 -M *
SOUTH PASS 9040 5.0 5.0 100 5.5 6.7 82
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Basin Index (%) 98 87
LOWER N. PLATTE
CASPER MTN. 7900 6.9 4.2 164 7.6 6.2 123
LAPRELE CREEK 8375 2.2 2.8 79 4.5 4.8 94
RENO HILL 8400 7.0 4.7 149 9.2 5.8 159
WINDY PEAK 7900 2.1 2.2 95 4.7 4.2 112
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Basin Index (%) 131 124
LARAMIE RIVER
BROOKLYN LAKE 10240 6.9 5.9 117 7.7 7.1 108
CINNABAR PARK 9574 6.7 6.9 97 8.6 8.6 100
CROW CREEK 8330 2.2 3.5 63 4.7 4.3 109
DEADMAN HILL 10220 7.6 5.3 143 8.2 6.2 132
RAWAH 9020 4.7 3.3 142 7.6 5.8 131
ROACH 9700 6.0 4.8 125 8.2 6.9 119
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Basin Index (%) 115 116
S. PLATTE
BLACK MOUNTAIN 8920 4.3 -M * 5.6 -M *
CROW CREEK 8330 2.2 3.5 63 4.7 4.3 109
DEADMAN HILL 10220 7.6 5.3 143 8.2 6.2 132
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Basin Index (%) 111 123
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.1 2.4 171 7.5 5.5 136
DIVIDE PEAK 8880 6.4 5.8 110 9.8 8.0 122
ELK RIVER 8700 5.8 4.4 132 8.6 6.9 125
LITTLE SNAKE RIVER 8915 7.0 5.1 137 12.2 11.1 110
OLD BATTLE 10000 10.3 9.4 110 12.0 12.4 97
SAGE CREEK BASIN 7850 3.6 3.7 97 5.7 5.5 104
SANDSTONE RS 8150 3.9 3.2 122 7.7 6.5 118
WHISKEY PARK 8950 9.9 7.0 141 12.8 9.1 141
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Basin Index (%) 124 117
UPPER GREEN RIVER
BIG SANDY OPENING 9080 4.0 4.4 91 4.1 4.9 84
BLIND BULL SUM 8650 8.8 6.7 131 7.6 7.2 106
EAST RIM DIVIDE 7930 4.7 2.7 174 4.7 4.2 112
ELKHART PARK G.S. 9400 5.3 4.0 132 5.7 5.0 114
GROS VENTRE SUMMIT 8750 5.7 4.6 124 5.4 4.9 110
GUNSIGHT PASS 9820 6.4 4.1 156 6.3 4.9 129
KENDALL R.S. 7740 5.1 3.3 155 6.1 4.9 124
LOOMIS PARK 8240 5.3 4.2 126 6.6 6.1 108
NEW FORK LAKE 8340 3.7 3.1 119 4.2 4.0 105
POCKET CREEK 9360 4.5 -M * 3.9 -M *
SNIDER BASIN 8060 4.0 3.5 114 5.1 4.9 104
SPRING CREEK DIVIDE 9000 7.3 6.9 106 7.9 8.3 95
TRIPLE PEAK 8500 6.7 6.0 112 8.4 8.5 99
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Basin Index (%) 125 106
LOWER GREEN RIVER
BLACKS FORK JCT 8870 1.6 -M * 4.6 -M *
BUCK PASTURE 9700 3.0 -M * 5.7 -M *
EF BLACKS FORK GS 9360 2.0 -M * 4.2 -M *
HAMS FORK 7840 1.6 3.1 52 3.9 4.1 95
HEWINTA 9519 1.6 2.5 64 4.8 5.4 89
HICKERSON PARK 9145 2.9 1.9 153 4.3 4.2 102
HOLE-IN-ROCK 9150 1.9 2.1 90 4.0 4.0 100
INDIAN CREEK 9425 5.9 7.2 82 6.3 7.4 85
KELLEY R.S. 8180 3.7 4.1 90 5.3 6.4 83
SPIRIT LK 10235 3.8 -M * 5.9 -M *
STEEL CREEK PARK 10200 4.9 5.1 96 5.9 6.1 97
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Basin Index (%) 87 92
UPPER BEAR RIVER
BEAR RIVER RS 8777 2.0 -M * 4.6 -M *
BUG LAKE 7950 4.3 4.7 91 5.2 7.0 74
BURTS MILLER RANCH 8000 2.1 -M * 2.8 -M *
CHALK CREEK #1 8993 6.6 7.6 87 8.0 9.2 87
HAYDEN FORK 9212 2.9 3.8 76 6.2 7.5 83
KELLEY R.S. 8180 3.7 4.1 90 5.3 6.4 83
LILY LAKE 9156 3.1 3.9 79 6.0 6.5 92
MONTE CRISTO 8960 5.6 7.3 77 6.6 9.0 73
SALT RIVER SUMMIT 7760 3.4 3.1 110 5.6 5.6 100
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Basin Index (%) 86 84
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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.