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 TUESDAY: DECEMBER 17 , 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 5.6 127 8.4 8.2 102
BLACK BEAR 8170 13.7 13.5 101 14.0 14.4 97
BLIND BULL SUM 8650 8.9 7.4 120 7.6 7.7 99
COTTONWOOD CREEK 7670 6.8 6.6 103 8.3 9.1 91
EAST RIM DIVIDE 7930 4.7 3.2 147 4.8 4.5 107
GRAND TARGHEE 9260 17.1 13.7 125 12.8 12.3 104
GRANITE CREEK 6770 5.4 4.4 123 6.9 7.5 92
GRASSY LAKE 7265 9.6 9.5 101 11.5 13.5 85
GROS VENTRE SUMMIT 8750 5.7 4.7 121 5.4 5.1 106
GUNSIGHT PASS 9820 6.5 4.2 155 6.4 5.2 123
LEWIS LAKE DIVIDE 7850 8.7 9.7 90 11.0 13.6 81
PHILLIPS BENCH 8200 8.1 8.3 98 9.2 10.2 90
SALT RIVER SUMMIT 7760 3.6 3.4 106 5.7 6.0 95
SNAKE RIVER STATION 6920 5.3 4.9 108 7.6 9.0 84
SPRING CREEK DIVIDE 9000 7.4 7.8 95 8.0 8.8 91
THUMB DIVIDE 7980 4.7 4.5 104 5.6 7.2 78
TOGWOTEE PASS 9580 9.6 9.1 105 9.1 9.5 96
TWO OCEAN PLATEAU 9240 12.0 10.6 113 10.2 10.6 96
WILLOW CREEK 8380 8.9 8.3 107 12.4 12.8 97
YOUNTS PEAK 8350 -M 5.5 * -M 6.4 *
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Basin Index (%) 110 94
MADISON-GALLATIN
BLACK BEAR 8170 13.7 13.5 101 14.0 14.4 97
CANYON 7870 4.0 4.1 98 5.6 6.4 88
MADISON PLATEAU 7750 7.3 7.9 92 8.9 10.0 89
WEST YELLOWSTONE 6700 3.9 3.3 118 5.0 5.7 88
WHISKEY CREEK 6800 5.0 4.7 106 7.0 8.0 88
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Basin Index (%) 101 91
YELLOWSTONE
BEARTOOTH LAKE 9360 8.6 7.9 109 7.3 7.5 97
BURNT MTN 5880 3.6 1.6 225 9.6 6.1 157
CANYON 7870 4.0 4.1 98 5.6 6.4 88
COLE CREEK 7850 7.4 5.6 132 6.1 5.7 107
EVENING STAR 9200 11.9 9.0 132 12.4 10.9 114
FISHER CREEK 9100 12.9 11.8 109 11.6 12.2 95
NORTHEAST ENTRANCE 7350 3.2 2.7 119 4.2 5.2 81
PARKER PEAK 9400 10.0 7.9 127 9.5 7.2 132
SYLVAN LAKE 8420 7.7 7.3 105 9.5 9.3 102
THUMB DIVIDE 7980 4.7 4.5 104 5.6 7.2 78
TWO OCEAN PLATEAU 9240 12.0 10.6 113 10.2 10.6 96
WHITE MILL 8700 9.6 8.0 120 8.3 9.3 89
WOLVERINE 7650 4.1 3.4 121 4.3 5.2 83
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Basin Index (%) 118 101
WIND RIVER
BURROUGHS CREEK 8750 -M 5.0 * -M 6.4 *
CASTLE CREEK 8400 2.7 -M * 4.5 -M *
COLD SPRINGS 9630 4.2 2.7 156 5.8 4.4 132
DEER PARK 9700 4.6 5.0 92 6.3 7.3 86
HOBBS PARK 10100 5.8 5.8 100 5.8 5.4 107
KIRWIN 9550 6.5 4.0 162 5.6 4.8 117
LITTLE WARM 9370 5.1 3.7 138 6.6 5.2 127
OWL CREEK 8975 3.2 2.2 145 3.2 2.6 123
SOUTH PASS 9040 5.0 5.3 94 5.6 7.1 79
ST. LAWRENCE ALT 8620 2.2 2.6 85 5.0 3.8 132
TOGWOTEE PASS 9580 9.6 9.1 105 9.1 9.5 96
TOWNSEND CREEK 8700 2.6 3.3 79 4.1 5.2 79
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Basin Index (%) 112 103
BIGHORN BASIN
BALD MTN. 9380 9.2 6.9 133 7.8 6.6 118
BEAR TRAP MEADOW 8200 3.8 2.1 181 5.2 3.7 141
BONE SPRINGS DIV 9350 7.0 6.2 113 5.8 6.0 97
GRAVE SPRINGS 8550 4.1 2.5 164 5.4 4.3 126
KIRWIN 9550 6.5 4.0 162 5.6 4.8 117
MARQUETTE 8760 4.3 -M * 5.7 -M *
MIDDLE POWDER 7760 5.8 3.7 157 6.2 5.3 117
OWL CREEK 8975 3.2 2.2 145 3.2 2.6 123
POWDER RIVER PASS 9480 5.2 3.7 141 5.6 5.0 112
SHELL CREEK 9580 6.6 6.0 110 5.7 5.6 102
TIMBER CREEK 7950 3.3 1.9 174 4.7 3.6 131
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Basin Index (%) 140 116
SHOSHONE RIVER
BLACKWATER 9780 11.4 8.8 130 9.0 8.5 106
EVENING STAR 9200 11.9 9.0 132 12.4 10.9 114
MARQUETTE 8760 4.3 -M * 5.7 -M *
SYLVAN ROAD 7120 4.8 4.1 117 8.1 7.6 107
YOUNTS PEAK 8350 -M 5.5 * -M 6.4 *
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Basin Index (%) 128 109
POWDER RIVER
BEAR TRAP MEADOW 8200 3.8 2.1 181 5.2 3.7 141
CLOUD PEAK RESERVOIR 9860 6.5 4.9 133 7.0 5.5 127
GRAVE SPRINGS 8550 4.1 2.5 164 5.4 4.3 126
HANSEN SAWMILL 8360 3.7 2.2 168 5.2 3.6 144
MIDDLE POWDER 7760 5.8 3.7 157 6.2 5.3 117
POWDER RIVER PASS 9480 5.2 3.7 141 5.6 5.0 112
SOLDIER PARK 8720 3.2 -M * 5.1 -M *
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Basin Index (%) 152 126
TONGUE RIVER
BIG GOOSE 7990 3.9 3.0 130 6.5 4.6 141
BONE SPRINGS DIV 9350 7.0 6.2 113 5.8 6.0 97
BURGESS JUNCTION 7880 4.8 3.8 126 6.7 5.0 134
DOME LAKE 8880 2.9 4.4 66 5.0 5.9 85
LITTLE GOOSE 8870 -M -M * -M -M *
SUCKER CREEK 8880 6.5 4.1 159 7.8 5.7 137
TIE CREEK 6870 2.0 1.1 182 6.3 4.8 131
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Basin Index (%) 120 119
BELLE FOURCHE
COLE CANYON 5910 2.6 1.0 260 9.0 4.1 220
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Basin Index (%) 260 220
CHEYENNE RIVER BASIN
BLIND PARK 6890 3.5 2.1 167 9.4 5.1 184
NORTH RAPID CREEK 6130 3.7 2.4 154 9.2 4.3 214
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Basin Index (%) 160 198
UPPER N. PLATTE
ARAPAHO RIDGE 10960 8.5 7.5 113 8.7 9.1 96
BLACKHALL MTN 9820 10.9 -M * 12.2 -M *
COLUMBINE 9160 6.5 6.7 97 9.3 9.4 99
DIVIDE PEAK 8880 6.4 6.3 102 9.9 8.5 116
JOE WRIGHT 10120 6.5 7.9 82 10.3 10.2 101
LAPRELE CREEK 8375 2.2 3.0 73 4.5 5.0 90
MED BOW 10500 9.4 -M * 12.0 -M *
NORTH FRENCH CREEK 10130 9.6 9.4 102 11.4 9.9 115
NEVER SUMMER 10280 7.9 6.8 116 7.5 -M *
OLD BATTLE 10000 10.2 10.3 99 12.2 13.3 92
RAWAH 9020 4.8 3.6 133 7.6 6.1 125
SAGE CREEK BASIN 7850 3.6 4.1 88 5.7 5.8 98
SAND LAKE 10050 9.7 9.3 104 10.0 9.3 108
SOUTH BRUSH CREEK 8440 4.5 3.8 118 7.1 6.0 118
TOWER 10500 13.4 16.0 84 15.8 15.2 104
WEBBER SPRINGS 9250 6.7 7.9 85 9.3 10.3 90
WILLOW CREEK PASS 9540 6.0 4.5 133 6.8 5.5 124
ZIRKEL 9340 7.8 7.5 104 11.1 11.1 100
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Basin Index (%) 100 104
SWEETWATER
DEER PARK 9700 4.6 5.0 92 6.3 7.3 86
LARSEN CREEK 9000 1.5 -M * 4.5 -M *
SOUTH PASS 9040 5.0 5.3 94 5.6 7.1 79
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Basin Index (%) 93 83
LOWER N. PLATTE
CASPER MTN. 7900 6.8 4.7 145 7.6 6.4 119
LAPRELE CREEK 8375 2.2 3.0 73 4.5 5.0 90
RENO HILL 8400 7.2 4.9 147 9.3 6.1 152
WINDY PEAK 7900 2.1 2.5 84 4.7 4.4 107
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Basin Index (%) 121 119
LARAMIE RIVER
BROOKLYN LAKE 10240 7.0 6.5 108 7.7 7.6 101
CINNABAR PARK 9574 6.8 7.4 92 8.7 9.2 95
CROW CREEK 8330 2.1 3.6 58 4.7 4.4 107
DEADMAN HILL 10220 7.7 5.6 138 8.3 6.5 128
RAWAH 9020 4.8 3.6 133 7.6 6.1 125
ROACH 9700 6.0 5.2 115 8.3 7.3 114
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Basin Index (%) 108 110
S. PLATTE
BLACK MOUNTAIN 8920 4.3 -M * 5.6 -M *
CROW CREEK 8330 2.1 3.6 58 4.7 4.4 107
DEADMAN HILL 10220 7.7 5.6 138 8.3 6.5 128
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Basin Index (%) 107 119
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.1 2.8 146 7.7 5.8 133
DIVIDE PEAK 8880 6.4 6.3 102 9.9 8.5 116
ELK RIVER 8700 5.9 4.9 120 8.6 7.4 116
LITTLE SNAKE RIVER 8915 7.1 6.0 118 12.4 11.9 104
OLD BATTLE 10000 10.2 10.3 99 12.2 13.3 92
SAGE CREEK BASIN 7850 3.6 4.1 88 5.7 5.8 98
SANDSTONE RS 8150 3.8 3.6 106 7.7 7.1 108
WHISKEY PARK 8950 10.0 7.5 133 12.9 9.8 132
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Basin Index (%) 112 111
UPPER GREEN RIVER
BIG SANDY OPENING 9080 4.0 4.6 87 4.0 5.2 77
BLIND BULL SUM 8650 8.9 7.4 120 7.6 7.7 99
EAST RIM DIVIDE 7930 4.7 3.2 147 4.8 4.5 107
ELKHART PARK G.S. 9400 5.4 4.3 126 5.9 5.3 111
GROS VENTRE SUMMIT 8750 5.7 4.7 121 5.4 5.1 106
GUNSIGHT PASS 9820 6.5 4.2 155 6.4 5.2 123
KENDALL R.S. 7740 5.1 3.6 142 6.2 5.3 117
LOOMIS PARK 8240 5.5 4.8 115 6.8 6.5 105
NEW FORK LAKE 8340 3.9 3.4 115 4.3 4.2 102
POCKET CREEK 9360 4.6 -M * 4.0 -M *
SNIDER BASIN 8060 4.1 3.8 108 5.2 5.2 100
SPRING CREEK DIVIDE 9000 7.4 7.8 95 8.0 8.8 91
TRIPLE PEAK 8500 6.8 6.6 103 8.5 9.0 94
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Basin Index (%) 116 102
LOWER GREEN RIVER
BLACKS FORK JCT 8870 1.7 -M * 4.6 -M *
BUCK PASTURE 9700 2.9 -M * 5.8 -M *
EF BLACKS FORK GS 9360 1.5 -M * 4.0 -M *
HAMS FORK 7840 1.7 3.4 50 3.9 4.3 91
HEWINTA 9519 1.8 2.8 64 4.9 5.7 86
HICKERSON PARK 9145 3.0 2.0 150 4.6 4.4 105
HOLE-IN-ROCK 9150 2.1 2.3 91 4.1 4.1 100
INDIAN CREEK 9425 6.0 7.9 76 6.4 7.9 81
KELLEY R.S. 8180 3.8 4.5 84 5.6 6.8 82
SPIRIT LK 10235 3.6 -M * 6.2 -M *
STEEL CREEK PARK 10200 5.2 5.4 96 5.9 6.5 91
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Basin Index (%) 83 89
UPPER BEAR RIVER
BEAR RIVER RS 8777 2.1 -M * 4.7 -M *
BUG LAKE 7950 3.8 5.2 73 5.3 7.4 72
BURTS MILLER RANCH 8000 2.2 -M * 2.9 -M *
CHALK CREEK #1 8993 6.7 8.3 81 8.0 9.8 82
HAYDEN FORK 9212 3.0 4.2 71 6.3 8.0 79
KELLEY R.S. 8180 3.8 4.5 84 5.6 6.8 82
LILY LAKE 9156 3.1 4.3 72 6.1 6.9 88
MONTE CRISTO 8960 5.9 8.0 74 6.9 9.7 71
SALT RIVER SUMMIT 7760 3.6 3.4 106 5.7 6.0 95
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Basin Index (%) 79 80
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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.