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 3 , 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 6.7 4.2 160 7.6 6.4 119
BLACK BEAR 8170 12.8 9.3 138 13.0 11.3 115
BLIND BULL SUM 8650 8.7 5.4 161 7.3 6.0 122
COTTONWOOD CREEK 7670 6.5 4.7 138 7.9 7.2 110
EAST RIM DIVIDE 7930 3.5 2.1 167 4.5 3.6 125
GRAND TARGHEE 9260 16.1 10.0 161 12.0 10.0 120
GRANITE CREEK 6770 5.0 2.8 179 6.4 5.7 112
GRASSY LAKE 7265 9.0 6.7 134 10.8 10.5 103
GROS VENTRE SUMMIT 8750 5.5 3.9 141 5.2 4.3 121
GUNSIGHT PASS 9820 6.2 3.4 182 6.1 4.2 145
LEWIS LAKE DIVIDE 7850 8.4 7.7 109 10.4 10.5 99
PHILLIPS BENCH 8200 7.6 6.0 127 8.7 7.9 110
SALT RIVER SUMMIT 7760 3.2 2.2 145 5.2 4.6 113
SNAKE RIVER STATION 6920 5.1 3.4 150 7.1 7.0 101
SPRING CREEK DIVIDE 9000 7.1 5.4 131 7.4 6.9 107
THUMB DIVIDE 7980 4.3 3.3 130 5.1 5.7 89
TOGWOTEE PASS 9580 9.2 7.5 123 8.3 7.6 109
TWO OCEAN PLATEAU 9240 11.9 8.8 135 9.7 8.5 114
WILLOW CREEK 8380 8.5 6.1 139 11.7 10.1 116
YOUNTS PEAK 8350 -M 4.4 * -M 5.3 *
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Basin Index (%) 141 112
MADISON-GALLATIN
BLACK BEAR 8170 12.8 9.3 138 13.0 11.3 115
CANYON 7870 3.6 3.1 116 4.9 5.0 98
MADISON PLATEAU 7750 6.5 5.4 120 8.1 7.7 105
WEST YELLOWSTONE 6700 3.5 2.1 167 4.5 4.5 100
WHISKEY CREEK 6800 4.3 3.4 126 6.0 6.2 97
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Basin Index (%) 132 105
YELLOWSTONE
BEARTOOTH LAKE 9360 8.0 6.4 125 6.6 5.8 114
BURNT MTN 5880 3.1 1.3 238 7.9 5.4 146
CANYON 7870 3.6 3.1 116 4.9 5.0 98
COLE CREEK 7850 6.9 4.4 157 5.1 5.1 100
EVENING STAR 9200 11.2 7.5 149 11.1 8.8 126
FISHER CREEK 9100 11.8 9.1 130 10.4 9.7 107
NORTHEAST ENTRANCE 7350 2.8 1.8 156 3.7 4.3 86
PARKER PEAK 9400 8.8 6.4 138 8.0 5.9 136
SYLVAN LAKE 8420 6.2 5.4 115 8.0 7.6 105
THUMB DIVIDE 7980 4.3 3.3 130 5.1 5.7 89
TWO OCEAN PLATEAU 9240 11.9 8.8 135 9.7 8.5 114
WHITE MILL 8700 9.1 6.3 144 7.6 7.5 101
WOLVERINE 7650 3.4 2.2 155 3.7 4.3 86
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Basin Index (%) 138 110
WIND RIVER
BURROUGHS CREEK 8750 -M 3.9 * -M 5.1 *
CASTLE CREEK 8400 2.3 -M * 4.3 -M *
COLD SPRINGS 9630 4.0 2.5 160 5.3 3.7 143
DEER PARK 9700 4.4 4.3 102 5.6 5.9 95
HOBBS PARK 10100 5.6 4.6 122 5.2 4.6 113
KIRWIN 9550 6.2 3.5 177 5.2 4.1 127
LITTLE WARM 9370 5.0 3.0 167 5.9 4.4 134
OWL CREEK 8975 2.8 1.7 165 2.9 2.2 132
SOUTH PASS 9040 4.6 4.0 115 4.8 5.5 87
ST. LAWRENCE ALT 8620 2.2 2.1 105 4.7 3.3 142
TOGWOTEE PASS 9580 9.2 7.5 123 8.3 7.6 109
TOWNSEND CREEK 8700 2.3 2.5 92 3.9 4.4 89
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Basin Index (%) 130 113
BIGHORN BASIN
BALD MTN. 9380 8.3 5.9 141 6.7 5.4 124
BEAR TRAP MEADOW 8200 3.2 1.5 213 4.7 3.2 147
BONE SPRINGS DIV 9350 6.1 5.2 117 5.0 5.1 98
GRAVE SPRINGS 8550 4.1 2.0 205 5.0 3.8 132
KIRWIN 9550 6.2 3.5 177 5.2 4.1 127
MARQUETTE 8760 4.2 -M * 5.3 -M *
MIDDLE POWDER 7760 5.6 3.1 181 5.9 4.6 128
OWL CREEK 8975 2.8 1.7 165 2.9 2.2 132
POWDER RIVER PASS 9480 4.7 3.1 152 5.0 4.3 116
SHELL CREEK 9580 5.9 5.1 116 4.8 4.8 100
TIMBER CREEK 7950 3.0 1.7 176 4.6 3.3 139
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Basin Index (%) 152 122
SHOSHONE RIVER
BLACKWATER 9780 10.7 7.2 149 8.0 6.8 118
EVENING STAR 9200 11.2 7.5 149 11.1 8.8 126
MARQUETTE 8760 4.2 -M * 5.3 -M *
SYLVAN ROAD 7120 4.1 2.9 141 7.1 6.2 115
YOUNTS PEAK 8350 -M 4.4 * -M 5.3 *
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Basin Index (%) 148 120
POWDER RIVER
BEAR TRAP MEADOW 8200 3.2 1.5 213 4.7 3.2 147
CLOUD PEAK RESERVOIR 9860 5.5 4.0 138 6.4 4.8 133
GRAVE SPRINGS 8550 4.1 2.0 205 5.0 3.8 132
HANSEN SAWMILL 8360 3.6 1.7 212 4.8 3.1 155
MIDDLE POWDER 7760 5.6 3.1 181 5.9 4.6 128
POWDER RIVER PASS 9480 4.7 3.1 152 5.0 4.3 116
SOLDIER PARK 8720 3.0 -M * 4.8 -M *
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Basin Index (%) 173 134
TONGUE RIVER
BIG GOOSE 7990 3.3 2.6 127 5.5 4.1 134
BONE SPRINGS DIV 9350 6.1 5.2 117 5.0 5.1 98
BURGESS JUNCTION 7880 4.3 3.2 134 5.7 4.3 133
DOME LAKE 8880 2.1 3.8 55 4.2 5.0 84
LITTLE GOOSE 8870 4.1 -M * 6.7 -M *
SUCKER CREEK 8880 5.9 3.3 179 6.6 4.8 138
TIE CREEK 6870 1.6 .8 200 5.8 4.3 135
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Basin Index (%) 123 119
BELLE FOURCHE
COLE CANYON 5910 2.0 .8 250 8.1 3.6 225
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Basin Index (%) 250 225
CHEYENNE RIVER BASIN
BLIND PARK 6890 2.6 1.8 144 8.4 4.5 187
NORTH RAPID CREEK 6130 3.0 1.5 200 8.4 3.8 221
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Basin Index (%) 170 202
UPPER N. PLATTE
ARAPAHO RIDGE 10960 7.3 5.9 124 7.4 7.2 103
BLACKHALL MTN 9820 9.2 -M * 10.6 -M *
COLUMBINE 9160 5.4 4.8 112 8.2 7.3 112
DIVIDE PEAK 8880 5.0 4.8 104 8.3 7.0 119
JOE WRIGHT 10120 4.5 6.2 73 8.9 8.4 106
LAPRELE CREEK 8375 1.3 2.3 57 3.8 4.2 90
MED BOW 10500 8.1 -M * 10.2 -M *
NORTH FRENCH CREEK 10130 8.0 7.3 110 9.8 8.1 121
NEVER SUMMER 10280 6.4 5.2 123 6.4 -M *
OLD BATTLE 10000 8.4 8.2 102 10.0 10.4 96
RAWAH 9020 3.7 2.7 137 6.6 5.2 127
SAGE CREEK BASIN 7850 2.3 2.4 96 4.8 4.8 100
SAND LAKE 10050 7.7 7.5 103 8.2 7.6 108
SOUTH BRUSH CREEK 8440 3.5 3.0 117 6.0 5.1 118
TOWER 10500 11.9 11.8 101 13.6 12.1 112
WEBBER SPRINGS 9250 5.2 5.2 100 7.6 8.0 95
WILLOW CREEK PASS 9540 5.0 3.8 132 5.6 4.6 122
ZIRKEL 9340 6.0 4.9 122 9.2 8.7 106
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Basin Index (%) 107 109
SWEETWATER
DEER PARK 9700 4.4 4.3 102 5.6 5.9 95
LARSEN CREEK 9000 1.6 -M * 4.2 -M *
SOUTH PASS 9040 4.6 4.0 115 4.8 5.5 87
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Basin Index (%) 108 91
LOWER N. PLATTE
CASPER MTN. 7900 6.8 3.6 189 7.0 5.6 125
LAPRELE CREEK 8375 1.3 2.3 57 3.8 4.2 90
RENO HILL 8400 6.4 3.8 168 8.4 5.1 165
WINDY PEAK 7900 1.3 1.8 72 3.8 3.7 103
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Basin Index (%) 137 124
LARAMIE RIVER
BROOKLYN LAKE 10240 5.3 4.4 120 6.1 6.0 102
CINNABAR PARK 9574 5.4 5.5 98 7.1 7.0 101
CROW CREEK 8330 1.4 2.2 64 4.0 3.6 111
DEADMAN HILL 10220 6.5 5.0 130 7.1 5.5 129
RAWAH 9020 3.7 2.7 137 6.6 5.2 127
ROACH 9700 4.7 4.2 112 6.8 5.9 115
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Basin Index (%) 112 114
S. PLATTE
BLACK MOUNTAIN 8920 3.2 -M * 4.5 -M *
CROW CREEK 8330 1.4 2.2 64 4.0 3.6 111
DEADMAN HILL 10220 6.5 5.0 130 7.1 5.5 129
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Basin Index (%) 110 122
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.9 1.6 181 6.3 4.8 131
DIVIDE PEAK 8880 5.0 4.8 104 8.3 7.0 119
ELK RIVER 8700 4.4 3.2 138 7.3 6.0 122
LITTLE SNAKE RIVER 8915 5.6 4.0 140 10.4 9.4 111
OLD BATTLE 10000 8.4 8.2 102 10.0 10.4 96
SAGE CREEK BASIN 7850 2.3 2.4 96 4.8 4.8 100
SANDSTONE RS 8150 2.8 2.3 122 6.4 5.6 114
WHISKEY PARK 8950 8.4 5.1 165 11.3 7.7 147
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Basin Index (%) 126 116
UPPER GREEN RIVER
BIG SANDY OPENING 9080 4.0 3.7 108 3.9 4.2 93
BLIND BULL SUM 8650 8.7 5.4 161 7.3 6.0 122
EAST RIM DIVIDE 7930 3.5 2.1 167 4.5 3.6 125
ELKHART PARK G.S. 9400 5.0 3.5 143 5.1 4.3 119
GROS VENTRE SUMMIT 8750 5.5 3.9 141 5.2 4.3 121
GUNSIGHT PASS 9820 6.2 3.4 182 6.1 4.2 145
KENDALL R.S. 7740 5.0 2.7 185 5.9 4.2 140
LOOMIS PARK 8240 5.4 3.3 164 6.5 5.1 127
NEW FORK LAKE 8340 3.7 2.4 154 3.6 3.5 103
POCKET CREEK 9360 4.7 -M * 3.8 -M *
SNIDER BASIN 8060 3.9 2.9 134 4.5 4.1 110
SPRING CREEK DIVIDE 9000 7.1 5.4 131 7.4 6.9 107
TRIPLE PEAK 8500 6.5 5.1 127 8.1 7.1 114
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Basin Index (%) 147 118
LOWER GREEN RIVER
BLACKS FORK JCT 8870 1.5 -M * 4.0 -M *
BUCK PASTURE 9700 2.5 -M * 4.8 -M *
EF BLACKS FORK GS 9360 1.6 -M * 3.8 -M *
HAMS FORK 7840 1.4 2.4 58 3.6 3.5 103
HEWINTA 9519 1.2 2.0 60 4.3 4.7 91
HICKERSON PARK 9145 2.3 1.6 144 3.8 3.8 100
HOLE-IN-ROCK 9150 1.3 1.7 76 3.5 3.6 97
INDIAN CREEK 9425 5.5 6.1 90 6.0 6.2 97
KELLEY R.S. 8180 3.5 3.2 109 5.1 5.2 98
SPIRIT LK 10235 2.6 -M * 4.8 -M *
STEEL CREEK PARK 10200 4.4 4.1 107 5.1 5.4 94
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Basin Index (%) 93 97
UPPER BEAR RIVER
BEAR RIVER RS 8777 1.4 -M * 3.8 -M *
BUG LAKE 7950 3.5 3.6 97 4.7 5.8 81
BURTS MILLER RANCH 8000 1.0 -M * 2.3 -M *
CHALK CREEK #1 8993 5.4 5.6 96 6.5 7.8 83
HAYDEN FORK 9212 2.1 3.1 68 5.4 6.5 83
KELLEY R.S. 8180 3.5 3.2 109 5.1 5.2 98
LILY LAKE 9156 2.5 3.0 83 5.2 5.7 91
MONTE CRISTO 8960 4.7 6.0 78 5.7 7.5 76
SALT RIVER SUMMIT 7760 3.2 2.2 145 5.2 4.6 113
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Basin Index (%) 93 88
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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.