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 MONDAY: DECEMBER 2 , 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 5.4 4.1 132 6.2 6.2 100
BLACK BEAR 8170 12.0 9.2 130 12.3 11.0 112
BLIND BULL SUM 8650 6.8 5.3 128 5.9 5.9 100
COTTONWOOD CREEK 7670 5.2 4.5 116 7.1 7.1 100
EAST RIM DIVIDE 7930 2.7 2.0 135 3.6 3.5 103
GRAND TARGHEE 9260 15.6 9.9 158 11.8 9.9 119
GRANITE CREEK 6770 3.6 2.7 133 5.2 5.6 93
GRASSY LAKE 7265 8.7 6.6 132 10.6 10.2 104
GROS VENTRE SUMMIT 8750 4.7 3.8 124 4.5 4.2 107
GUNSIGHT PASS 9820 4.8 3.3 145 5.0 4.2 119
LEWIS LAKE DIVIDE 7850 7.9 7.5 105 9.9 10.2 97
PHILLIPS BENCH 8200 6.3 5.8 109 7.5 7.6 99
SALT RIVER SUMMIT 7760 2.7 2.1 129 4.6 4.5 102
SNAKE RIVER STATION 6920 4.8 3.4 141 6.9 6.8 101
SPRING CREEK DIVIDE 9000 5.6 5.3 106 6.1 6.7 91
THUMB DIVIDE 7980 3.8 3.3 115 4.7 5.5 85
TOGWOTEE PASS 9580 8.2 7.4 111 7.4 7.4 100
TWO OCEAN PLATEAU 9240 10.0 8.7 115 8.2 8.3 99
WILLOW CREEK 8380 7.1 5.9 120 10.4 9.9 105
YOUNTS PEAK 8350 -M 4.4 * -M 5.1 *
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Basin Index (%) 125 102
MADISON-GALLATIN
BLACK BEAR 8170 12.0 9.2 130 12.3 11.0 112
CANYON 7870 3.0 3.1 97 4.5 4.9 92
MADISON PLATEAU 7750 5.6 5.3 106 7.3 7.5 97
WEST YELLOWSTONE 6700 3.0 2.0 150 3.9 4.3 91
WHISKEY CREEK 6800 3.6 3.3 109 5.2 6.0 87
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Basin Index (%) 119 99
YELLOWSTONE
BEARTOOTH LAKE 9360 6.9 6.2 111 5.7 5.7 100
BURNT MTN 5880 1.7 1.3 131 6.8 5.2 131
CANYON 7870 3.0 3.1 97 4.5 4.9 92
COLE CREEK 7850 5.2 4.2 124 4.5 5.0 90
EVENING STAR 9200 10.0 7.3 137 10.0 8.6 116
FISHER CREEK 9100 10.2 8.9 115 9.0 9.4 96
NORTHEAST ENTRANCE 7350 1.9 1.7 112 2.9 4.2 69
PARKER PEAK 9400 8.1 6.3 129 7.4 5.8 128
SYLVAN LAKE 8420 5.8 5.3 109 7.6 7.4 103
THUMB DIVIDE 7980 3.8 3.3 115 4.7 5.5 85
TWO OCEAN PLATEAU 9240 10.0 8.7 115 8.2 8.3 99
WHITE MILL 8700 7.5 6.2 121 6.3 7.3 86
WOLVERINE 7650 2.7 2.1 129 3.4 4.2 81
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Basin Index (%) 119 99
WIND RIVER
BURROUGHS CREEK 8750 -M 3.8 * -M 4.9 *
CASTLE CREEK 8400 1.6 -M * 3.6 -M *
COLD SPRINGS 9630 3.7 2.5 148 5.0 3.7 135
DEER PARK 9700 3.9 4.2 93 4.9 5.7 86
HOBBS PARK 10100 5.0 4.6 109 4.9 4.5 109
KIRWIN 9550 5.4 3.5 154 4.5 4.0 112
LITTLE WARM 9370 4.4 2.9 152 5.3 4.3 123
OWL CREEK 8975 2.6 1.6 162 2.7 2.2 123
SOUTH PASS 9040 3.7 4.0 92 4.5 5.4 83
ST. LAWRENCE ALT 8620 2.1 2.1 100 4.6 3.3 139
TOGWOTEE PASS 9580 8.2 7.4 111 7.4 7.4 100
TOWNSEND CREEK 8700 2.2 2.5 88 3.8 4.4 86
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Basin Index (%) 117 106
BIGHORN BASIN
BALD MTN. 9380 7.5 5.9 127 6.2 5.3 117
BEAR TRAP MEADOW 8200 3.2 1.5 213 4.7 3.2 147
BONE SPRINGS DIV 9350 5.5 5.1 108 4.6 5.0 92
GRAVE SPRINGS 8550 4.1 1.9 216 5.0 3.8 132
KIRWIN 9550 5.4 3.5 154 4.5 4.0 112
MARQUETTE 8760 3.9 -M * 5.0 -M *
MIDDLE POWDER 7760 5.5 3.1 177 5.8 4.5 129
OWL CREEK 8975 2.6 1.6 162 2.7 2.2 123
POWDER RIVER PASS 9480 4.5 3.0 150 4.9 4.2 117
SHELL CREEK 9580 5.5 5.1 108 4.7 4.7 100
TIMBER CREEK 7950 2.7 1.7 159 4.2 3.3 127
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Basin Index (%) 144 118
SHOSHONE RIVER
BLACKWATER 9780 9.7 7.2 135 7.0 6.7 104
EVENING STAR 9200 10.0 7.3 137 10.0 8.6 116
MARQUETTE 8760 3.9 -M * 5.0 -M *
SYLVAN ROAD 7120 3.6 2.9 124 6.5 6.1 107
YOUNTS PEAK 8350 -M 4.4 * -M 5.1 *
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Basin Index (%) 134 110
POWDER RIVER
BEAR TRAP MEADOW 8200 3.2 1.5 213 4.7 3.2 147
CLOUD PEAK RESERVOIR 9860 5.0 3.9 128 6.1 4.8 127
GRAVE SPRINGS 8550 4.1 1.9 216 5.0 3.8 132
HANSEN SAWMILL 8360 3.2 1.7 188 4.6 3.1 148
MIDDLE POWDER 7760 5.5 3.1 177 5.8 4.5 129
POWDER RIVER PASS 9480 4.5 3.0 150 4.9 4.2 117
SOLDIER PARK 8720 2.7 -M * 4.6 -M *
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Basin Index (%) 169 132
TONGUE RIVER
BIG GOOSE 7990 2.9 2.5 116 5.4 4.1 132
BONE SPRINGS DIV 9350 5.5 5.1 108 4.6 5.0 92
BURGESS JUNCTION 7880 3.7 3.2 116 5.6 4.2 133
DOME LAKE 8880 1.4 3.8 37 4.0 5.0 80
LITTLE GOOSE 8870 3.6 -M * 6.3 -M *
SUCKER CREEK 8880 5.3 3.3 161 6.4 4.8 133
TIE CREEK 6870 1.2 .8 150 5.4 4.2 129
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Basin Index (%) 107 115
BELLE FOURCHE
COLE CANYON 5910 1.9 .8 238 8.0 3.6 222
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Basin Index (%) 238 222
CHEYENNE RIVER BASIN
BLIND PARK 6890 2.6 1.8 144 8.4 4.4 191
NORTH RAPID CREEK 6130 3.1 1.5 207 8.4 3.7 227
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Basin Index (%) 173 207
UPPER N. PLATTE
ARAPAHO RIDGE 10960 7.0 5.8 121 7.2 7.0 103
BLACKHALL MTN 9820 8.7 -M * 10.1 -M *
COLUMBINE 9160 5.2 4.7 111 8.0 7.2 111
DIVIDE PEAK 8880 5.1 4.7 109 8.3 6.9 120
JOE WRIGHT 10120 4.6 6.1 75 8.7 8.2 106
LAPRELE CREEK 8375 1.4 2.3 61 3.9 4.2 93
MED BOW 10500 7.9 -M * 10.0 -M *
NORTH FRENCH CREEK 10130 7.9 7.2 110 9.7 7.9 123
NEVER SUMMER 10280 6.3 5.1 124 6.3 -M *
OLD BATTLE 10000 8.3 8.0 104 9.9 10.2 97
RAWAH 9020 3.5 2.6 135 6.6 5.0 132
SAGE CREEK BASIN 7850 2.5 2.3 109 4.8 4.7 102
SAND LAKE 10050 7.5 7.4 101 8.1 7.5 108
SOUTH BRUSH CREEK 8440 3.5 2.9 121 6.0 5.0 120
TOWER 10500 11.5 11.7 98 13.4 11.8 114
WEBBER SPRINGS 9250 5.1 5.1 100 7.5 7.8 96
WILLOW CREEK PASS 9540 4.8 3.7 130 5.4 4.6 117
ZIRKEL 9340 5.5 4.8 115 8.7 8.5 102
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Basin Index (%) 106 109
SWEETWATER
DEER PARK 9700 3.9 4.2 93 4.9 5.7 86
LARSEN CREEK 9000 .9 -M * 3.6 -M *
SOUTH PASS 9040 3.7 4.0 92 4.5 5.4 83
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Basin Index (%) 93 85
LOWER N. PLATTE
CASPER MTN. 7900 6.6 3.6 183 7.0 5.5 127
LAPRELE CREEK 8375 1.4 2.3 61 3.9 4.2 93
RENO HILL 8400 6.3 3.7 170 8.4 5.0 168
WINDY PEAK 7900 1.4 1.8 78 3.8 3.6 106
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Basin Index (%) 138 126
LARAMIE RIVER
BROOKLYN LAKE 10240 4.8 4.3 112 5.7 5.9 97
CINNABAR PARK 9574 5.1 5.5 93 6.7 6.9 97
CROW CREEK 8330 1.4 2.0 70 4.1 3.6 114
DEADMAN HILL 10220 6.3 4.9 129 6.9 5.4 128
RAWAH 9020 3.5 2.6 135 6.6 5.0 132
ROACH 9700 4.5 4.1 110 6.6 5.8 114
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Basin Index (%) 109 112
S. PLATTE
BLACK MOUNTAIN 8920 3.2 -M * 4.5 -M *
CROW CREEK 8330 1.4 2.0 70 4.1 3.6 114
DEADMAN HILL 10220 6.3 4.9 129 6.9 5.4 128
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Basin Index (%) 112 122
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.0 1.6 188 6.2 4.7 132
DIVIDE PEAK 8880 5.1 4.7 109 8.3 6.9 120
ELK RIVER 8700 4.4 3.1 142 7.1 5.8 122
LITTLE SNAKE RIVER 8915 5.6 3.9 144 10.3 9.1 113
OLD BATTLE 10000 8.3 8.0 104 9.9 10.2 97
SAGE CREEK BASIN 7850 2.5 2.3 109 4.8 4.7 102
SANDSTONE RS 8150 2.9 2.2 132 6.5 5.5 118
WHISKEY PARK 8950 8.3 4.9 169 11.2 7.6 147
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Basin Index (%) 131 118
UPPER GREEN RIVER
BIG SANDY OPENING 9080 3.5 3.7 95 3.4 4.1 83
BLIND BULL SUM 8650 6.8 5.3 128 5.9 5.9 100
EAST RIM DIVIDE 7930 2.7 2.0 135 3.6 3.5 103
ELKHART PARK G.S. 9400 4.2 3.4 124 4.2 4.2 100
GROS VENTRE SUMMIT 8750 4.7 3.8 124 4.5 4.2 107
GUNSIGHT PASS 9820 4.8 3.3 145 5.0 4.2 119
KENDALL R.S. 7740 3.2 2.6 123 4.3 4.1 105
LOOMIS PARK 8240 4.2 3.2 131 5.3 4.9 108
NEW FORK LAKE 8340 2.8 2.4 117 2.8 3.4 82
POCKET CREEK 9360 4.5 -M * 3.6 -M *
SNIDER BASIN 8060 3.2 2.9 110 3.8 4.0 95
SPRING CREEK DIVIDE 9000 5.6 5.3 106 6.1 6.7 91
TRIPLE PEAK 8500 5.3 5.1 104 6.8 6.9 99
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Basin Index (%) 119 99
LOWER GREEN RIVER
BLACKS FORK JCT 8870 1.1 -M * 3.8 -M *
BUCK PASTURE 9700 2.1 -M * 4.7 -M *
EF BLACKS FORK GS 9360 1.6 -M * 3.7 -M *
HAMS FORK 7840 1.1 2.3 48 3.5 3.4 103
HEWINTA 9519 1.1 2.0 55 4.2 4.6 91
HICKERSON PARK 9145 2.3 1.6 144 3.8 3.8 100
HOLE-IN-ROCK 9150 1.5 1.7 88 3.5 3.6 97
INDIAN CREEK 9425 4.3 5.9 73 5.0 6.1 82
KELLEY R.S. 8180 3.2 3.1 103 4.8 5.2 92
SPIRIT LK 10235 2.6 -M * 4.8 -M *
STEEL CREEK PARK 10200 3.9 4.0 98 4.9 5.3 92
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Basin Index (%) 84 93
UPPER BEAR RIVER
BEAR RIVER RS 8777 1.2 -M * 3.7 -M *
BUG LAKE 7950 2.3 3.6 64 3.8 5.6 68
BURTS MILLER RANCH 8000 .8 -M * 2.1 -M *
CHALK CREEK #1 8993 4.6 5.4 85 6.0 7.7 78
HAYDEN FORK 9212 1.8 3.1 58 5.1 6.4 80
KELLEY R.S. 8180 3.2 3.1 103 4.8 5.2 92
LILY LAKE 9156 2.2 2.9 76 4.9 5.6 88
MONTE CRISTO 8960 3.7 5.8 64 5.0 7.4 68
SALT RIVER SUMMIT 7760 2.7 2.1 129 4.6 4.5 102
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Basin Index (%) 79 81
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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.
