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 20 , 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 5.8 122 8.4 8.5 99
BLACK BEAR 8170 13.9 14.2 98 14.2 15.1 94
BLIND BULL SUM 8650 8.9 7.8 114 7.7 7.9 97
COTTONWOOD CREEK 7670 7.1 7.0 101 8.5 9.5 89
EAST RIM DIVIDE 7930 4.8 3.5 137 4.8 4.6 104
GRAND TARGHEE 9260 17.2 14.3 120 12.8 12.7 101
GRANITE CREEK 6770 5.5 4.7 117 6.9 7.8 88
GRASSY LAKE 7265 9.5 10.0 95 11.3 13.9 81
GROS VENTRE SUMMIT 8750 5.9 4.8 123 5.4 5.3 102
GUNSIGHT PASS 9820 6.6 4.4 150 6.5 5.4 120
LEWIS LAKE DIVIDE 7850 8.6 10.2 84 10.9 14.0 78
PHILLIPS BENCH 8200 8.0 8.7 92 9.1 10.6 86
SALT RIVER SUMMIT 7760 3.8 3.7 103 5.8 6.2 94
SNAKE RIVER STATION 6920 5.5 5.2 106 7.7 9.4 82
SPRING CREEK DIVIDE 9000 7.7 8.1 95 8.2 9.2 89
THUMB DIVIDE 7980 4.5 5.0 90 5.4 7.4 73
TOGWOTEE PASS 9580 9.6 9.4 102 9.2 9.9 93
TWO OCEAN PLATEAU 9240 12.1 10.8 112 10.1 10.9 93
WILLOW CREEK 8380 9.2 8.8 105 12.8 13.2 97
YOUNTS PEAK 8350 -M 5.7 * -M 6.6 *
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Basin Index (%) 106 91
MADISON-GALLATIN
BLACK BEAR 8170 13.9 14.2 98 14.2 15.1 94
CANYON 7870 4.1 4.3 95 5.6 6.6 85
MADISON PLATEAU 7750 7.4 8.5 87 8.9 10.3 86
WEST YELLOWSTONE 6700 4.1 3.6 114 5.0 5.9 85
WHISKEY CREEK 6800 5.1 5.2 98 7.0 8.3 84
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Basin Index (%) 97 88
YELLOWSTONE
BEARTOOTH LAKE 9360 8.8 8.4 105 7.5 7.7 97
BURNT MTN 5880 3.6 1.7 212 9.7 6.2 156
CANYON 7870 4.1 4.3 95 5.6 6.6 85
COLE CREEK 7850 7.4 5.6 132 6.2 5.9 105
EVENING STAR 9200 12.2 9.4 130 12.6 11.3 112
FISHER CREEK 9100 13.1 12.6 104 11.9 12.7 94
NORTHEAST ENTRANCE 7350 3.3 2.8 118 4.2 5.3 79
PARKER PEAK 9400 10.3 8.3 124 9.6 7.5 128
SYLVAN LAKE 8420 7.9 7.7 103 9.8 9.6 102
THUMB DIVIDE 7980 4.5 5.0 90 5.4 7.4 73
TWO OCEAN PLATEAU 9240 12.1 10.8 112 10.1 10.9 93
WHITE MILL 8700 9.7 8.5 114 8.3 9.6 86
WOLVERINE 7650 4.3 3.6 119 4.5 5.4 83
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Basin Index (%) 114 99
WIND RIVER
BURROUGHS CREEK 8750 -M 5.2 * -M 6.6 *
CASTLE CREEK 8400 2.9 -M * 4.7 -M *
COLD SPRINGS 9630 4.4 2.8 157 6.0 4.5 133
DEER PARK 9700 4.8 5.2 92 6.6 7.4 89
HOBBS PARK 10100 6.0 5.9 102 5.9 5.5 107
KIRWIN 9550 6.6 4.1 161 5.7 5.0 114
LITTLE WARM 9370 5.2 3.8 137 6.8 5.4 126
OWL CREEK 8975 3.3 2.3 143 3.4 2.6 131
SOUTH PASS 9040 5.2 5.5 95 5.7 7.2 79
ST. LAWRENCE ALT 8620 2.6 2.5 104 5.2 3.9 133
TOGWOTEE PASS 9580 9.6 9.4 102 9.2 9.9 93
TOWNSEND CREEK 8700 2.9 3.3 88 4.6 5.2 88
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Basin Index (%) 113 104
BIGHORN BASIN
BALD MTN. 9380 9.2 7.1 130 7.9 6.8 116
BEAR TRAP MEADOW 8200 3.9 2.2 177 5.4 3.8 142
BONE SPRINGS DIV 9350 7.0 6.4 109 5.8 6.2 94
GRAVE SPRINGS 8550 4.4 2.7 163 5.5 4.4 125
KIRWIN 9550 6.6 4.1 161 5.7 5.0 114
MARQUETTE 8760 4.4 -M * 5.8 -M *
MIDDLE POWDER 7760 5.9 4.0 148 6.3 5.5 115
OWL CREEK 8975 3.3 2.3 143 3.4 2.6 131
POWDER RIVER PASS 9480 5.3 3.9 136 5.7 5.1 112
SHELL CREEK 9580 6.7 6.3 106 5.8 5.8 100
TIMBER CREEK 7950 3.4 1.9 179 4.9 3.6 136
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Basin Index (%) 136 116
SHOSHONE RIVER
BLACKWATER 9780 11.5 9.2 125 9.2 8.8 105
EVENING STAR 9200 12.2 9.4 130 12.6 11.3 112
MARQUETTE 8760 4.4 -M * 5.8 -M *
SYLVAN ROAD 7120 4.9 4.3 114 8.2 7.9 104
YOUNTS PEAK 8350 -M 5.7 * -M 6.6 *
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Basin Index (%) 125 107
POWDER RIVER
BEAR TRAP MEADOW 8200 3.9 2.2 177 5.4 3.8 142
CLOUD PEAK RESERVOIR 9860 6.7 5.1 131 7.2 5.6 129
GRAVE SPRINGS 8550 4.4 2.7 163 5.5 4.4 125
HANSEN SAWMILL 8360 3.8 2.4 158 5.4 3.7 146
MIDDLE POWDER 7760 5.9 4.0 148 6.3 5.5 115
POWDER RIVER PASS 9480 5.3 3.9 136 5.7 5.1 112
SOLDIER PARK 8720 3.3 -M * 5.3 -M *
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Basin Index (%) 148 126
TONGUE RIVER
BIG GOOSE 7990 4.0 3.1 129 6.7 4.8 140
BONE SPRINGS DIV 9350 7.0 6.4 109 5.8 6.2 94
BURGESS JUNCTION 7880 4.9 4.0 122 6.9 5.2 133
DOME LAKE 8880 3.0 4.6 65 5.2 6.1 85
LITTLE GOOSE 8870 -M -M * -M -M *
SUCKER CREEK 8880 6.6 4.2 157 7.9 6.0 132
TIE CREEK 6870 2.0 1.2 167 6.3 4.9 129
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Basin Index (%) 117 117
BELLE FOURCHE
COLE CANYON 5910 2.7 1.0 270 9.1 4.2 217
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Basin Index (%) 270 217
CHEYENNE RIVER BASIN
BLIND PARK 6890 3.8 2.3 165 9.6 5.2 185
NORTH RAPID CREEK 6130 3.8 2.5 152 9.2 4.4 209
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Basin Index (%) 158 196
UPPER N. PLATTE
ARAPAHO RIDGE 10960 8.6 8.0 108 8.7 9.4 93
BLACKHALL MTN 9820 11.1 -M * 12.3 -M *
COLUMBINE 9160 6.8 7.3 93 9.5 9.9 96
DIVIDE PEAK 8880 6.5 6.8 96 10.0 8.9 112
JOE WRIGHT 10120 6.4 8.3 77 10.4 10.6 98
LAPRELE CREEK 8375 2.3 3.2 72 4.6 5.2 88
MED BOW 10500 9.6 -M * 12.0 -M *
NORTH FRENCH CREEK 10130 9.7 10.0 97 11.4 10.4 110
NEVER SUMMER 10280 8.2 7.2 114 7.5 -M *
OLD BATTLE 10000 10.6 10.9 97 12.6 14.0 90
RAWAH 9020 4.8 3.7 130 7.7 6.4 120
SAGE CREEK BASIN 7850 3.8 4.4 86 5.8 6.1 95
SAND LAKE 10050 9.7 9.7 100 10.1 9.8 103
SOUTH BRUSH CREEK 8440 4.6 4.1 112 7.2 6.3 114
TOWER 10500 13.7 17.1 80 16.0 16.0 100
WEBBER SPRINGS 9250 7.1 8.2 87 9.5 10.7 89
WILLOW CREEK PASS 9540 6.1 4.8 127 6.9 5.7 121
ZIRKEL 9340 8.0 7.8 103 11.2 11.8 95
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Basin Index (%) 96 100
SWEETWATER
DEER PARK 9700 4.8 5.2 92 6.6 7.4 89
LARSEN CREEK 9000 2.0 -M * 5.0 -M *
SOUTH PASS 9040 5.2 5.5 95 5.7 7.2 79
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Basin Index (%) 93 84
LOWER N. PLATTE
CASPER MTN. 7900 7.8 5.0 156 8.0 6.6 121
LAPRELE CREEK 8375 2.3 3.2 72 4.6 5.2 88
RENO HILL 8400 7.7 5.1 151 9.5 6.3 151
WINDY PEAK 7900 2.2 2.7 81 4.9 4.6 107
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Basin Index (%) 125 119
LARAMIE RIVER
BROOKLYN LAKE 10240 7.0 6.9 101 7.7 7.9 97
CINNABAR PARK 9574 6.9 7.5 92 8.7 9.8 89
CROW CREEK 8330 2.0 3.8 53 4.6 4.6 100
DEADMAN HILL 10220 7.8 6.1 128 8.2 6.7 122
RAWAH 9020 4.8 3.7 130 7.7 6.4 120
ROACH 9700 6.0 5.6 107 8.3 7.7 108
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Basin Index (%) 103 105
S. PLATTE
BLACK MOUNTAIN 8920 4.2 -M * 5.6 -M *
CROW CREEK 8330 2.0 3.8 53 4.6 4.6 100
DEADMAN HILL 10220 7.8 6.1 128 8.2 6.7 122
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Basin Index (%) 99 113
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.2 3.1 135 8.0 6.1 131
DIVIDE PEAK 8880 6.5 6.8 96 10.0 8.9 112
ELK RIVER 8700 5.8 5.3 109 8.6 7.7 112
LITTLE SNAKE RIVER 8915 7.5 6.6 114 12.7 12.6 101
OLD BATTLE 10000 10.6 10.9 97 12.6 14.0 90
SAGE CREEK BASIN 7850 3.8 4.4 86 5.8 6.1 95
SANDSTONE RS 8150 3.9 3.8 103 7.8 7.4 105
WHISKEY PARK 8950 10.1 8.0 126 13.1 10.3 127
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Basin Index (%) 107 108
UPPER GREEN RIVER
BIG SANDY OPENING 9080 4.6 4.7 98 4.5 5.3 85
BLIND BULL SUM 8650 8.9 7.8 114 7.7 7.9 97
EAST RIM DIVIDE 7930 4.8 3.5 137 4.8 4.6 104
ELKHART PARK G.S. 9400 5.5 4.5 122 5.9 5.4 109
GROS VENTRE SUMMIT 8750 5.9 4.8 123 5.4 5.3 102
GUNSIGHT PASS 9820 6.6 4.4 150 6.5 5.4 120
KENDALL R.S. 7740 5.2 3.9 133 6.2 5.4 115
LOOMIS PARK 8240 5.5 5.1 108 6.8 6.7 101
NEW FORK LAKE 8340 4.1 3.5 117 4.3 4.4 98
POCKET CREEK 9360 4.6 -M * 4.2 -M *
SNIDER BASIN 8060 4.3 4.2 102 5.2 5.5 95
SPRING CREEK DIVIDE 9000 7.7 8.1 95 8.2 9.2 89
TRIPLE PEAK 8500 6.9 7.1 97 8.6 9.3 92
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Basin Index (%) 114 100
LOWER GREEN RIVER
BLACKS FORK JCT 8870 2.1 -M * 4.9 -M *
BUCK PASTURE 9700 3.4 -M * 6.0 -M *
EF BLACKS FORK GS 9360 1.6 -M * 4.2 -M *
HAMS FORK 7840 2.3 3.5 66 4.4 4.4 100
HEWINTA 9519 1.9 3.1 61 5.1 5.8 88
HICKERSON PARK 9145 3.1 2.1 148 4.7 4.5 104
HOLE-IN-ROCK 9150 2.6 2.4 108 4.4 4.2 105
INDIAN CREEK 9425 6.5 8.5 76 6.8 8.3 82
KELLEY R.S. 8180 4.3 4.8 90 6.0 7.0 86
SPIRIT LK 10235 4.0 -M * 6.5 -M *
STEEL CREEK PARK 10200 5.0 5.5 91 6.2 6.6 94
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Basin Index (%) 86 92
UPPER BEAR RIVER
BEAR RIVER RS 8777 2.6 -M * 5.1 -M *
BUG LAKE 7950 3.9 5.4 72 6.0 7.7 78
BURTS MILLER RANCH 8000 2.5 -M * 3.1 -M *
CHALK CREEK #1 8993 7.6 8.8 86 8.9 10.1 88
HAYDEN FORK 9212 3.6 4.5 80 7.0 8.2 85
KELLEY R.S. 8180 4.3 4.8 90 6.0 7.0 86
LILY LAKE 9156 3.6 4.5 80 6.5 7.1 92
MONTE CRISTO 8960 6.8 8.5 80 7.6 10.0 76
SALT RIVER SUMMIT 7760 3.8 3.7 103 5.8 6.2 94
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Basin Index (%) 84 85
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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.