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: DECEMBER 25 , 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 7.9 6.5 122 9.3 9.0 103
BLACK BEAR 8170 15.9 15.5 103 15.9 16.0 99
BLIND BULL SUM 8650 9.9 8.2 121 8.3 8.4 99
COTTONWOOD CREEK 7670 8.3 7.6 109 9.9 10.1 98
EAST RIM DIVIDE 7930 5.2 3.8 137 5.1 4.9 104
GRAND TARGHEE 9260 20.1 15.9 126 14.4 13.7 105
GRANITE CREEK 6770 5.9 5.3 111 7.3 8.3 88
GRASSY LAKE 7265 11.9 10.9 109 13.7 15.1 91
GROS VENTRE SUMMIT 8750 6.2 5.3 117 5.6 5.5 102
GUNSIGHT PASS 9820 7.2 5.0 144 7.0 5.7 123
LEWIS LAKE DIVIDE 7850 9.9 11.4 87 12.4 15.0 83
PHILLIPS BENCH 8200 9.4 9.5 99 10.4 11.4 91
SALT RIVER SUMMIT 7760 4.6 4.2 110 6.7 6.7 100
SNAKE RIVER STATION 6920 6.3 5.5 115 8.7 9.9 88
SPRING CREEK DIVIDE 9000 8.9 8.5 105 9.4 9.7 97
THUMB DIVIDE 7980 5.3 5.5 96 6.1 7.8 78
TOGWOTEE PASS 9580 10.9 10.1 108 10.3 10.5 98
TWO OCEAN PLATEAU 9240 13.2 11.3 117 11.1 11.5 97
WILLOW CREEK 8380 10.8 9.6 112 14.2 14.1 101
YOUNTS PEAK 8350 -M 6.2 * -M 6.9 *
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Basin Index (%) 111 96
MADISON-GALLATIN
BLACK BEAR 8170 15.9 15.5 103 15.9 16.0 99
CANYON 7870 4.9 4.8 102 6.4 7.1 90
MADISON PLATEAU 7750 8.5 9.3 91 9.8 10.9 90
WEST YELLOWSTONE 6700 4.6 4.0 115 5.6 6.2 90
WHISKEY CREEK 6800 5.9 5.8 102 7.8 8.8 89
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Basin Index (%) 101 93
YELLOWSTONE
BEARTOOTH LAKE 9360 10.0 9.0 111 8.4 8.2 102
BURNT MTN 5880 3.8 1.9 200 9.5 6.4 148
CANYON 7870 4.9 4.8 102 6.4 7.1 90
COLE CREEK 7850 8.2 5.9 139 6.2 6.2 100
EVENING STAR 9200 13.5 10.1 134 14.2 12.0 118
FISHER CREEK 9100 14.7 13.6 108 13.2 13.6 97
NORTHEAST ENTRANCE 7350 4.1 3.2 128 5.0 5.7 88
PARKER PEAK 9400 11.5 8.8 131 10.9 7.8 140
SYLVAN LAKE 8420 9.2 8.4 110 11.1 10.3 108
THUMB DIVIDE 7980 5.3 5.5 96 6.1 7.8 78
TWO OCEAN PLATEAU 9240 13.2 11.3 117 11.1 11.5 97
WHITE MILL 8700 11.0 8.9 124 9.4 10.3 91
WOLVERINE 7650 5.6 4.2 133 5.2 5.7 91
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Basin Index (%) 120 104
WIND RIVER
BURROUGHS CREEK 8750 -M 5.6 * -M 7.0 *
CASTLE CREEK 8400 2.9 -M * 4.5 -M *
COLD SPRINGS 9630 4.5 3.0 150 6.2 4.6 135
DEER PARK 9700 5.1 5.7 89 6.6 7.8 85
HOBBS PARK 10100 6.1 6.1 100 5.6 5.8 97
KIRWIN 9550 6.9 4.2 164 5.9 5.2 113
LITTLE WARM 9370 5.6 4.1 137 6.7 5.7 118
OWL CREEK 8975 3.3 2.3 143 3.2 2.7 119
SOUTH PASS 9040 5.5 5.8 95 5.6 7.6 74
ST. LAWRENCE ALT 8620 2.3 2.8 82 4.5 4.1 110
TOGWOTEE PASS 9580 10.9 10.1 108 10.3 10.5 98
TOWNSEND CREEK 8700 2.6 3.6 72 3.7 5.5 67
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Basin Index (%) 111 98
BIGHORN BASIN
BALD MTN. 9380 10.6 7.5 141 8.6 7.3 118
BEAR TRAP MEADOW 8200 4.3 2.4 179 5.2 4.0 130
BONE SPRINGS DIV 9350 7.8 6.9 113 6.2 6.6 94
GRAVE SPRINGS 8550 4.7 3.0 157 5.9 4.7 126
KIRWIN 9550 6.9 4.2 164 5.9 5.2 113
MARQUETTE 8760 4.2 -M * 5.8 -M *
MIDDLE POWDER 7760 6.6 4.6 143 6.4 5.8 110
OWL CREEK 8975 3.3 2.3 143 3.2 2.7 119
POWDER RIVER PASS 9480 5.7 4.2 136 5.9 5.5 107
SHELL CREEK 9580 7.3 6.8 107 6.1 6.1 100
TIMBER CREEK 7950 3.3 2.0 165 4.8 3.8 126
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Basin Index (%) 138 113
SHOSHONE RIVER
BLACKWATER 9780 11.9 9.7 123 9.6 9.2 104
EVENING STAR 9200 13.5 10.1 134 14.2 12.0 118
MARQUETTE 8760 4.2 -M * 5.8 -M *
SYLVAN ROAD 7120 5.6 4.8 117 9.0 8.3 108
YOUNTS PEAK 8350 -M 6.2 * -M 6.9 *
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Basin Index (%) 126 111
POWDER RIVER
BEAR TRAP MEADOW 8200 4.3 2.4 179 5.2 4.0 130
CLOUD PEAK RESERVOIR 9860 7.2 5.6 129 7.5 5.9 127
GRAVE SPRINGS 8550 4.7 3.0 157 5.9 4.7 126
HANSEN SAWMILL 8360 3.7 2.7 137 5.5 3.8 145
MIDDLE POWDER 7760 6.6 4.6 143 6.4 5.8 110
POWDER RIVER PASS 9480 5.7 4.2 136 5.9 5.5 107
SOLDIER PARK 8720 3.3 -M * 5.3 -M *
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Basin Index (%) 143 123
TONGUE RIVER
BIG GOOSE 7990 4.1 3.4 121 6.3 5.1 124
BONE SPRINGS DIV 9350 7.8 6.9 113 6.2 6.6 94
BURGESS JUNCTION 7880 5.4 4.3 126 6.7 5.6 120
DOME LAKE 8880 3.2 4.9 65 5.1 6.4 80
LITTLE GOOSE 8870 -M -M * -M -M *
SUCKER CREEK 8880 7.1 4.7 151 7.9 6.4 123
TIE CREEK 6870 2.4 1.6 150 6.7 5.3 126
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Basin Index (%) 116 110
BELLE FOURCHE
COLE CANYON 5910 2.9 1.5 193 9.1 4.4 207
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Basin Index (%) 193 207
CHEYENNE RIVER BASIN
BLIND PARK 6890 4.1 2.7 152 10.1 5.6 180
NORTH RAPID CREEK 6130 4.2 2.8 150 9.7 4.7 206
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Basin Index (%) 151 192
UPPER N. PLATTE
ARAPAHO RIDGE 10960 9.7 8.7 111 9.7 10.0 97
BLACKHALL MTN 9820 12.7 -M * 14.4 -M *
COLUMBINE 9160 9.1 8.0 114 11.6 10.7 108
DIVIDE PEAK 8880 7.5 7.5 100 11.0 9.5 116
JOE WRIGHT 10120 6.6 8.9 74 11.3 11.4 99
LAPRELE CREEK 8375 2.7 3.6 75 5.0 5.6 89
MED BOW 10500 11.7 -M * 14.4 -M *
NORTH FRENCH CREEK 10130 12.7 10.6 120 14.2 11.1 128
NEVER SUMMER 10280 8.7 8.0 109 8.0 -M *
OLD BATTLE 10000 12.7 11.7 109 14.5 14.9 97
RAWAH 9020 5.3 3.9 136 8.0 6.8 118
SAGE CREEK BASIN 7850 4.4 5.1 86 6.4 6.6 97
SAND LAKE 10050 11.8 10.5 112 11.9 10.4 114
SOUTH BRUSH CREEK 8440 5.7 4.3 133 8.1 6.7 121
TOWER 10500 16.7 18.2 92 18.4 16.9 109
WEBBER SPRINGS 9250 8.6 8.8 98 11.1 11.4 97
WILLOW CREEK PASS 9540 6.3 5.1 124 7.0 6.1 115
ZIRKEL 9340 10.7 8.6 124 13.6 12.4 110
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Basin Index (%) 106 108
SWEETWATER
DEER PARK 9700 5.1 5.7 89 6.6 7.8 85
LARSEN CREEK 9000 2.0 -M * 5.0 -M *
SOUTH PASS 9040 5.5 5.8 95 5.6 7.6 74
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Basin Index (%) 92 79
LOWER N. PLATTE
CASPER MTN. 7900 8.2 5.4 152 8.6 7.0 123
LAPRELE CREEK 8375 2.7 3.6 75 5.0 5.6 89
RENO HILL 8400 8.3 5.4 154 10.3 6.6 156
WINDY PEAK 7900 2.6 2.9 90 5.2 4.8 108
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Basin Index (%) 126 121
LARAMIE RIVER
BROOKLYN LAKE 10240 8.5 7.3 116 9.2 8.5 108
CINNABAR PARK 9574 8.5 7.8 109 10.5 10.3 102
CROW CREEK 8330 2.6 3.9 67 5.1 5.1 100
DEADMAN HILL 10220 8.7 6.8 128 9.2 7.3 126
RAWAH 9020 5.3 3.9 136 8.0 6.8 118
ROACH 9700 6.8 6.4 106 9.1 8.3 110
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Basin Index (%) 112 110
S. PLATTE
BLACK MOUNTAIN 8920 4.7 -M * 6.2 -M *
CROW CREEK 8330 2.6 3.9 67 5.1 5.1 100
DEADMAN HILL 10220 8.7 6.8 128 9.2 7.3 126
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Basin Index (%) 106 115
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.1 3.4 150 8.8 6.5 135
DIVIDE PEAK 8880 7.5 7.5 100 11.0 9.5 116
ELK RIVER 8700 7.7 5.9 131 10.3 8.3 124
LITTLE SNAKE RIVER 8915 9.6 7.7 125 14.9 13.5 110
OLD BATTLE 10000 12.7 11.7 109 14.5 14.9 97
SAGE CREEK BASIN 7850 4.4 5.1 86 6.4 6.6 97
SANDSTONE RS 8150 4.8 4.1 117 8.8 7.9 111
WHISKEY PARK 8950 13.3 8.6 155 15.7 11.0 143
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Basin Index (%) 121 116
UPPER GREEN RIVER
BIG SANDY OPENING 9080 4.6 5.1 90 4.6 5.7 81
BLIND BULL SUM 8650 9.9 8.2 121 8.3 8.4 99
EAST RIM DIVIDE 7930 5.2 3.8 137 5.1 4.9 104
ELKHART PARK G.S. 9400 5.8 4.9 118 5.8 5.8 100
GROS VENTRE SUMMIT 8750 6.2 5.3 117 5.6 5.5 102
GUNSIGHT PASS 9820 7.2 5.0 144 7.0 5.7 123
KENDALL R.S. 7740 5.6 4.3 130 6.5 5.8 112
LOOMIS PARK 8240 6.0 5.6 107 7.4 7.2 103
NEW FORK LAKE 8340 4.3 4.0 108 4.3 4.6 93
POCKET CREEK 9360 4.7 -M * 4.4 -M *
SNIDER BASIN 8060 4.9 4.6 107 5.5 5.9 93
SPRING CREEK DIVIDE 9000 8.9 8.5 105 9.4 9.7 97
TRIPLE PEAK 8500 8.0 7.6 105 9.8 9.9 99
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Basin Index (%) 114 100
LOWER GREEN RIVER
BLACKS FORK JCT 8870 2.0 -M * 5.1 -M *
BUCK PASTURE 9700 3.9 -M * 6.7 -M *
EF BLACKS FORK GS 9360 1.8 -M * 4.4 -M *
HAMS FORK 7840 2.8 4.0 70 4.8 4.7 102
HEWINTA 9519 2.2 3.3 67 5.3 6.1 87
HICKERSON PARK 9145 3.5 2.4 146 5.0 4.7 106
HOLE-IN-ROCK 9150 2.7 2.8 96 4.7 4.4 107
INDIAN CREEK 9425 7.6 9.5 80 7.6 8.8 86
KELLEY R.S. 8180 5.0 5.6 89 6.6 7.5 88
SPIRIT LK 10235 4.7 -M * 7.3 -M *
STEEL CREEK PARK 10200 5.1 5.8 88 6.7 7.0 96
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Basin Index (%) 87 94
UPPER BEAR RIVER
BEAR RIVER RS 8777 2.7 -M * 5.3 -M *
BUG LAKE 7950 5.1 5.8 88 6.4 8.2 78
BURTS MILLER RANCH 8000 2.6 -M * 3.1 -M *
CHALK CREEK #1 8993 8.1 9.4 86 9.5 10.7 89
HAYDEN FORK 9212 4.2 4.8 88 7.6 8.8 86
KELLEY R.S. 8180 5.0 5.6 89 6.6 7.5 88
LILY LAKE 9156 4.2 4.7 89 7.0 7.5 93
MONTE CRISTO 8960 7.8 9.1 86 8.3 10.7 78
SALT RIVER SUMMIT 7760 4.6 4.2 110 6.7 6.7 100
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Basin Index (%) 89 87
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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.