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 SUNDAY: DECEMBER 15 , 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 7.1 5.4 131 8.4 8.1 104
BLACK BEAR 8170 13.7 13.0 105 14.0 14.1 99
BLIND BULL SUM 8650 8.9 7.0 127 7.6 7.5 101
COTTONWOOD CREEK 7670 6.8 6.4 106 8.3 8.9 93
EAST RIM DIVIDE 7930 4.7 3.0 157 4.8 4.4 109
GRAND TARGHEE 9260 17.1 12.8 134 12.8 12.0 107
GRANITE CREEK 6770 5.4 4.2 129 6.9 7.3 95
GRASSY LAKE 7265 9.7 9.2 105 11.7 13.1 89
GROS VENTRE SUMMIT 8750 5.8 4.6 126 5.6 5.0 112
GUNSIGHT PASS 9820 6.5 4.2 155 6.4 5.1 125
LEWIS LAKE DIVIDE 7850 8.7 9.5 92 11.1 13.2 84
PHILLIPS BENCH 8200 8.0 7.9 101 9.2 10.0 92
SALT RIVER SUMMIT 7760 3.6 3.2 112 5.7 5.8 98
SNAKE RIVER STATION 6920 5.4 4.6 117 7.7 8.8 88
SPRING CREEK DIVIDE 9000 7.4 7.3 101 8.0 8.6 93
THUMB DIVIDE 7980 4.7 4.3 109 5.6 7.0 80
TOGWOTEE PASS 9580 9.6 8.8 109 9.0 9.3 97
TWO OCEAN PLATEAU 9240 12.0 10.4 115 10.2 10.4 98
WILLOW CREEK 8380 8.9 8.0 111 12.5 12.5 100
YOUNTS PEAK 8350 -M 5.3 * -M 6.2 *
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Basin Index (%) 115 97
MADISON-GALLATIN
BLACK BEAR 8170 13.7 13.0 105 14.0 14.1 99
CANYON 7870 4.0 3.8 105 5.6 6.2 90
MADISON PLATEAU 7750 7.3 7.5 97 8.9 9.7 92
WEST YELLOWSTONE 6700 4.0 3.0 133 5.0 5.5 91
WHISKEY CREEK 6800 5.0 4.4 114 6.9 7.8 88
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Basin Index (%) 107 93
YELLOWSTONE
BEARTOOTH LAKE 9360 8.6 7.6 113 7.3 7.2 101
BURNT MTN 5880 3.8 1.6 238 9.6 5.9 163
CANYON 7870 4.0 3.8 105 5.6 6.2 90
COLE CREEK 7850 7.7 5.5 140 6.1 5.6 109
EVENING STAR 9200 11.9 8.8 135 12.3 10.6 116
FISHER CREEK 9100 12.9 11.3 114 11.5 12.0 96
NORTHEAST ENTRANCE 7350 3.2 2.6 123 4.2 5.0 84
PARKER PEAK 9400 9.9 7.6 130 9.4 7.0 134
SYLVAN LAKE 8420 7.7 6.9 112 9.5 9.1 104
THUMB DIVIDE 7980 4.7 4.3 109 5.6 7.0 80
TWO OCEAN PLATEAU 9240 12.0 10.4 115 10.2 10.4 98
WHITE MILL 8700 9.6 7.6 126 8.3 9.1 91
WOLVERINE 7650 4.1 3.3 124 4.3 5.1 84
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Basin Index (%) 123 104
WIND RIVER
BURROUGHS CREEK 8750 -M 4.8 * -M 6.3 *
CASTLE CREEK 8400 2.7 -M * 4.5 -M *
COLD SPRINGS 9630 4.2 2.6 162 5.8 4.3 135
DEER PARK 9700 4.6 5.0 92 6.1 7.1 86
HOBBS PARK 10100 5.8 5.8 100 5.6 5.3 106
KIRWIN 9550 6.5 3.9 167 5.6 4.8 117
LITTLE WARM 9370 5.1 3.6 142 6.5 5.2 125
OWL CREEK 8975 3.2 2.1 152 3.2 2.5 128
SOUTH PASS 9040 5.0 5.2 96 5.5 7.0 79
ST. LAWRENCE ALT 8620 2.4 2.6 92 5.0 3.8 132
TOGWOTEE PASS 9580 9.6 8.8 109 9.0 9.3 97
TOWNSEND CREEK 8700 2.6 3.2 81 4.1 5.1 80
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Basin Index (%) 114 104
BIGHORN BASIN
BALD MTN. 9380 9.2 6.7 137 7.8 6.4 122
BEAR TRAP MEADOW 8200 3.7 2.0 185 5.1 3.7 138
BONE SPRINGS DIV 9350 7.0 6.1 115 5.7 5.8 98
GRAVE SPRINGS 8550 4.1 2.4 171 5.4 4.2 129
KIRWIN 9550 6.5 3.9 167 5.6 4.8 117
MARQUETTE 8760 4.4 -M * 5.7 -M *
MIDDLE POWDER 7760 5.8 3.6 161 6.1 5.2 117
OWL CREEK 8975 3.2 2.1 152 3.2 2.5 128
POWDER RIVER PASS 9480 5.2 3.7 141 5.5 4.9 112
SHELL CREEK 9580 6.6 5.8 114 5.7 5.5 104
TIMBER CREEK 7950 3.3 2.0 165 4.7 3.5 134
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Basin Index (%) 143 118
SHOSHONE RIVER
BLACKWATER 9780 11.4 8.4 136 9.0 8.3 108
EVENING STAR 9200 11.9 8.8 135 12.3 10.6 116
MARQUETTE 8760 4.4 -M * 5.7 -M *
SYLVAN ROAD 7120 4.8 3.9 123 8.1 7.4 109
YOUNTS PEAK 8350 -M 5.3 * -M 6.2 *
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Basin Index (%) 133 112
POWDER RIVER
BEAR TRAP MEADOW 8200 3.7 2.0 185 5.1 3.7 138
CLOUD PEAK RESERVOIR 9860 6.4 4.8 133 6.9 5.4 128
GRAVE SPRINGS 8550 4.1 2.4 171 5.4 4.2 129
HANSEN SAWMILL 8360 3.7 2.1 176 5.2 3.5 149
MIDDLE POWDER 7760 5.8 3.6 161 6.1 5.2 117
POWDER RIVER PASS 9480 5.2 3.7 141 5.5 4.9 112
SOLDIER PARK 8720 3.1 -M * 5.1 -M *
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Basin Index (%) 155 127
TONGUE RIVER
BIG GOOSE 7990 3.9 3.0 130 6.4 4.6 139
BONE SPRINGS DIV 9350 7.0 6.1 115 5.7 5.8 98
BURGESS JUNCTION 7880 4.8 3.7 130 6.6 4.9 135
DOME LAKE 8880 2.8 4.3 65 5.0 5.8 86
LITTLE GOOSE 8870 -M -M * -M -M *
SUCKER CREEK 8880 6.4 4.0 160 7.7 5.6 138
TIE CREEK 6870 2.0 1.1 182 6.2 4.7 132
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Basin Index (%) 121 120
BELLE FOURCHE
COLE CANYON 5910 2.5 1.1 227 9.0 4.0 225
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Basin Index (%) 227 225
CHEYENNE RIVER BASIN
BLIND PARK 6890 3.6 2.0 180 9.4 5.0 188
NORTH RAPID CREEK 6130 3.7 2.3 161 9.2 4.2 219
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Basin Index (%) 170 202
UPPER N. PLATTE
ARAPAHO RIDGE 10960 8.4 7.3 115 8.6 8.9 97
BLACKHALL MTN 9820 10.9 -M * 12.4 -M *
COLUMBINE 9160 6.4 6.3 102 9.2 9.1 101
DIVIDE PEAK 8880 6.2 6.1 102 9.8 8.3 118
JOE WRIGHT 10120 6.5 7.6 86 10.3 9.9 104
LAPRELE CREEK 8375 2.2 2.9 76 4.5 4.9 92
MED BOW 10500 9.4 -M * 11.9 -M *
NORTH FRENCH CREEK 10130 9.6 9.1 105 11.3 9.6 118
NEVER SUMMER 10280 8.0 6.5 123 7.5 -M *
OLD BATTLE 10000 10.2 9.8 104 12.0 12.9 93
RAWAH 9020 4.8 3.4 141 7.6 6.0 127
SAGE CREEK BASIN 7850 3.6 4.0 90 5.7 5.7 100
SAND LAKE 10050 9.6 9.0 107 10.0 9.1 110
SOUTH BRUSH CREEK 8440 4.5 3.6 125 7.1 5.9 120
TOWER 10500 13.4 15.2 88 15.7 14.9 105
WEBBER SPRINGS 9250 6.7 7.5 89 9.2 9.8 94
WILLOW CREEK PASS 9540 6.0 4.3 140 6.7 5.4 124
ZIRKEL 9340 7.7 7.1 108 11.0 10.9 101
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Basin Index (%) 104 106
SWEETWATER
DEER PARK 9700 4.6 5.0 92 6.1 7.1 86
LARSEN CREEK 9000 1.7 -M * 4.5 -M *
SOUTH PASS 9040 5.0 5.2 96 5.5 7.0 79
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Basin Index (%) 94 82
LOWER N. PLATTE
CASPER MTN. 7900 6.8 4.5 151 7.5 6.3 119
LAPRELE CREEK 8375 2.2 2.9 76 4.5 4.9 92
RENO HILL 8400 7.1 4.8 148 9.2 6.0 153
WINDY PEAK 7900 2.1 2.3 91 4.7 4.3 109
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Basin Index (%) 126 120
LARAMIE RIVER
BROOKLYN LAKE 10240 6.9 6.2 111 7.6 7.4 103
CINNABAR PARK 9574 6.7 7.2 93 8.6 9.0 96
CROW CREEK 8330 1.9 3.5 54 3.8 4.4 86
DEADMAN HILL 10220 7.7 5.5 140 8.3 6.4 130
RAWAH 9020 4.8 3.4 141 7.6 6.0 127
ROACH 9700 5.9 5.0 118 8.1 7.2 112
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Basin Index (%) 110 109
S. PLATTE
BLACK MOUNTAIN 8920 4.2 -M * 5.6 -M *
CROW CREEK 8330 1.9 3.5 54 3.8 4.4 86
DEADMAN HILL 10220 7.7 5.5 140 8.3 6.4 130
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Basin Index (%) 107 112
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.1 2.6 158 7.7 5.7 135
DIVIDE PEAK 8880 6.2 6.1 102 9.8 8.3 118
ELK RIVER 8700 5.9 4.6 128 8.6 7.2 119
LITTLE SNAKE RIVER 8915 7.1 5.6 127 12.4 11.6 107
OLD BATTLE 10000 10.2 9.8 104 12.0 12.9 93
SAGE CREEK BASIN 7850 3.6 4.0 90 5.7 5.7 100
SANDSTONE RS 8150 3.9 3.4 115 7.7 6.9 112
WHISKEY PARK 8950 9.9 7.2 138 12.9 9.6 134
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Basin Index (%) 118 113
UPPER GREEN RIVER
BIG SANDY OPENING 9080 4.1 4.5 91 4.1 5.1 80
BLIND BULL SUM 8650 8.9 7.0 127 7.6 7.5 101
EAST RIM DIVIDE 7930 4.7 3.0 157 4.8 4.4 109
ELKHART PARK G.S. 9400 5.3 4.2 126 5.8 5.1 114
GROS VENTRE SUMMIT 8750 5.8 4.6 126 5.6 5.0 112
GUNSIGHT PASS 9820 6.5 4.2 155 6.4 5.1 125
KENDALL R.S. 7740 5.1 3.5 146 6.2 5.2 119
LOOMIS PARK 8240 5.5 4.5 122 6.8 6.3 108
NEW FORK LAKE 8340 4.0 3.2 125 4.3 4.2 102
POCKET CREEK 9360 4.5 -M * 3.9 -M *
SNIDER BASIN 8060 4.1 3.6 114 5.2 5.1 102
SPRING CREEK DIVIDE 9000 7.4 7.3 101 8.0 8.6 93
TRIPLE PEAK 8500 6.7 6.3 106 8.5 8.8 97
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Basin Index (%) 122 104
LOWER GREEN RIVER
BLACKS FORK JCT 8870 1.8 -M * 4.7 -M *
BUCK PASTURE 9700 3.1 -M * 5.8 -M *
EF BLACKS FORK GS 9360 1.6 -M * 4.1 -M *
HAMS FORK 7840 1.7 3.2 53 3.9 4.2 93
HEWINTA 9519 1.7 2.7 63 5.0 5.5 91
HICKERSON PARK 9145 3.0 2.0 150 4.7 4.3 109
HOLE-IN-ROCK 9150 2.2 2.2 100 4.5 4.0 112
INDIAN CREEK 9425 6.0 7.6 79 6.4 7.7 83
KELLEY R.S. 8180 3.8 4.3 88 5.6 6.6 85
SPIRIT LK 10235 3.6 -M * 6.1 -M *
STEEL CREEK PARK 10200 7.4 5.2 142 5.9 6.3 94
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Basin Index (%) 95 93
UPPER BEAR RIVER
BEAR RIVER RS 8777 2.1 -M * 4.7 -M *
BUG LAKE 7950 4.2 5.0 84 5.3 7.3 73
BURTS MILLER RANCH 8000 2.1 -M * 2.9 -M *
CHALK CREEK #1 8993 6.7 8.0 84 8.0 9.6 83
HAYDEN FORK 9212 3.0 4.0 75 6.3 7.8 81
KELLEY R.S. 8180 3.8 4.3 88 5.6 6.6 85
LILY LAKE 9156 3.2 4.1 78 6.1 6.7 91
MONTE CRISTO 8960 5.8 7.6 76 6.9 9.4 73
SALT RIVER SUMMIT 7760 3.6 3.2 112 5.7 5.8 98
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Basin Index (%) 84 83
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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.