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 18 , 2012
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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 9.4 5.6 168 11.6 8.3 140
BLACK BEAR 8170 18.5 13.7 135 17.9 14.6 123
BLIND BULL SUM 8650 9.4 7.5 125 7.6 7.7 99
COTTONWOOD CREEK 7670 7.9 6.7 118 11.2 9.3 120
EAST RIM DIVIDE 7930 4.0 3.3 121 4.4 4.5 98
GRAND TARGHEE 9260 18.3 13.9 132 14.7 12.4 119
GRANITE CREEK 6770 7.0 4.5 156 9.0 7.6 118
GRASSY LAKE 7265 11.0 9.7 113 15.2 13.7 111
GROS VENTRE SUMMIT 8750 5.7 4.7 121 6.1 5.2 117
GUNSIGHT PASS 9820 6.2 4.3 144 6.4 5.2 123
LEWIS LAKE DIVIDE 7850 15.6 9.8 159 18.7 13.7 136
PHILLIPS BENCH 8200 10.1 8.4 120 12.0 10.4 115
SALT RIVER SUMMIT 7760 4.4 3.5 126 7.4 6.1 121
SNAKE RIVER STATION 6920 6.9 5.0 138 11.6 9.2 126
SPRING CREEK DIVIDE 9000 9.8 8.0 122 9.2 8.9 103
THUMB DIVIDE 7980 7.9 4.7 168 9.3 7.3 127
TOGWOTEE PASS 9580 10.4 9.2 113 11.1 9.6 116
TWO OCEAN PLATEAU 9240 15.2 10.6 143 13.1 10.7 122
WILLOW CREEK 8380 10.2 8.5 120 14.3 13.0 110
YOUNTS PEAK 8350 7.0 5.6 125 6.4 6.4 100
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Basin wide percent 132 118
MADISON-GALLATIN
BLACK BEAR 8170 18.5 13.7 135 17.9 14.6 123
CANYON 7870 5.1 4.1 124 6.2 6.5 95
MADISON PLATEAU 7750 11.3 8.1 140 14.0 10.1 139
WEST YELLOWSTONE 6700 4.0 3.4 118 7.8 5.7 137
WHISKEY CREEK 6800 4.7 4.9 96 10.3 8.1 127
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Basin wide percent 127 125
YELLOWSTONE
BEARTOOTH LAKE 9360 8.1 8.1 100 8.5 7.6 112
BURNT MTN 5880 .9 1.7 53 4.8 6.1 79
CANYON 7870 5.1 4.1 124 6.2 6.5 95
COLE CREEK 7850 3.2 5.6 57 4.4 5.8 76
EVENING STAR 9200 12.3 9.1 135 14.3 11.1 129
FISHER CREEK 9100 18.2 12.1 150 17.7 12.4 143
NORTHEAST ENTRANCE 7350 2.7 2.7 100 6.0 5.2 115
PARKER PEAK 9400 9.8 8.0 122 10.1 7.3 138
SYLVAN LAKE 8420 8.8 7.5 117 12.7 9.4 135
THUMB DIVIDE 7980 7.9 4.7 168 9.3 7.3 127
TWO OCEAN PLATEAU 9240 15.2 10.6 143 13.1 10.7 122
WHITE MILL 8700 11.1 8.2 135 12.1 9.4 129
WOLVERINE 7650 4.1 3.5 117 4.9 5.3 92
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Basin wide percent 125 119
WIND RIVER
BURROUGHS CREEK 8750 6.2 5.0 124 6.1 6.4 95
CASTLE CREEK 8400 3.1 -M * 4.5 -M *
COLD SPRINGS 9630 3.8 2.7 141 4.8 4.4 109
DEER PARK 9700 6.9 5.1 135 7.9 7.4 107
HOBBS PARK 10100 5.6 5.9 95 5.1 5.4 94
KIRWIN 9550 4.6 4.0 115 5.7 4.8 119
LITTLE WARM 9370 5.1 3.8 134 6.3 5.3 119
OWL CREEK 8975 2.0 2.2 91 2.4 2.6 92
SOUTH PASS 9040 5.5 5.4 102 4.8 7.1 68
ST. LAWRENCE ALT 8620 1.3 2.6 50 3.2 3.9 82
TOGWOTEE PASS 9580 10.4 9.2 113 11.1 9.6 116
TOWNSEND CREEK 8700 1.4 3.3 42 3.5 5.2 67
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Basin wide percent 107 98
BIGHORN BASIN
BALD MTN. 9380 4.9 6.9 71 3.7 6.7 55
BEAR TRAP MEADOW 8200 3.8 2.1 181 4.9 3.8 129
BONE SPRINGS DIV 9350 5.7 6.2 92 5.5 6.0 92
GRAVE SPRINGS 8550 1.7 2.5 68 3.1 4.3 72
KIRWIN 9550 4.6 4.0 115 5.7 4.8 119
MARQUETTE 8760 2.2 -M * 3.6 -M *
MIDDLE POWDER 7760 3.0 3.8 79 6.0 5.4 111
OWL CREEK 8975 2.0 2.2 91 2.4 2.6 92
POWDER RIVER PASS 9480 5.4 3.8 142 6.0 5.0 120
SHELL CREEK 9580 7.0 6.1 115 6.6 5.6 118
TIMBER CREEK 7950 .9 1.9 47 2.8 3.6 78
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Basin wide percent 99 98
SHOSHONE RIVER
BLACKWATER 9780 11.9 9.0 132 11.3 8.5 133
EVENING STAR 9200 12.3 9.1 135 14.3 11.1 129
MARQUETTE 8760 2.2 -M * 3.6 -M *
SYLVAN ROAD 7120 4.8 4.1 117 9.3 7.7 121
YOUNTS PEAK 8350 7.0 5.6 125 6.4 6.4 100
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Basin wide percent 129 123
POWDER RIVER
BEAR TRAP MEADOW 8200 3.8 2.1 181 4.9 3.8 129
CLOUD PEAK RESERVOIR 9860 4.5 5.0 90 5.5 5.6 98
GRAVE SPRINGS 8550 1.7 2.5 68 3.1 4.3 72
HANSEN SAWMILL 8360 2.5 2.3 109 4.1 3.6 114
MIDDLE POWDER 7760 3.0 3.8 79 6.0 5.4 111
POWDER RIVER PASS 9480 5.4 3.8 142 6.0 5.0 120
SOLDIER PARK 8720 1.5 -M * 3.7 -M *
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Basin wide percent 107 107
TONGUE RIVER
BIG GOOSE 7990 2.2 3.0 73 3.7 4.7 79
BONE SPRINGS DIV 9350 5.7 6.2 92 5.5 6.0 92
BURGESS JUNCTION 7880 2.3 3.9 59 3.1 5.1 61
DOME LAKE 8880 3.5 4.5 78 5.3 5.9 90
LITTLE GOOSE 8870 2.7 -M * 5.4 -M *
SUCKER CREEK 8880 3.8 4.1 93 4.0 5.8 69
TIE CREEK 6870 .6 1.2 50 3.8 4.8 79
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Basin wide percent 79 79
BELLE FOURCHE
COLE CANYON 5910 1.0 1.0 100 2.9 4.1 71
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Basin wide percent 100 71
CHEYENNE RIVER BASIN
BLIND PARK 6890 1.4 2.2 64 3.7 5.2 71
NORTH RAPID CREEK 6130 1.3 2.4 54 2.7 4.3 63
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Basin wide percent 59 67
UPPER N. PLATTE
ARAPAHO RIDGE 10960 5.8 -M * 6.0 -M *
BLACKHALL MTN 9820 7.7 -M * 9.6 -M *
COLUMBINE 9160 5.7 6.9 83 7.2 9.6 75
DIVIDE PEAK 8880 4.5 6.5 69 6.3 8.6 73
JOE WRIGHT 10120 7.1 8.0 89 9.4 10.3 91
LAPRELE CREEK 8375 .7 3.0 23 -M 5.1 *
MED BOW 10500 8.2 -M * 10.5 -M *
NORTH FRENCH CREEK 10130 7.3 9.6 76 7.8 10.0 78
NEVER SUMMER 10280 6.0 -M * 5.0 -M *
OLD BATTLE 10000 9.3 10.5 89 10.5 13.5 78
RAWAH 9020 2.6 -M * 5.5 -M *
SAGE CREEK BASIN 7850 3.4 4.2 81 4.4 5.9 75
SAND LAKE 10050 7.0 9.4 74 7.5 9.5 79
SOUTH BRUSH CREEK 8440 2.9 3.8 76 4.5 6.1 74
TOWER 10500 9.4 16.4 57 10.1 15.5 65
WEBBER SPRINGS 9250 6.9 8.0 86 8.1 10.4 78
WILLOW CREEK PASS 9540 4.1 -M * 5.2 5.6 93
ZIRKEL 9340 6.8 -M * 9.2 -M *
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Basin wide percent 74 77
SWEETWATER
DEER PARK 9700 6.9 5.1 135 7.9 7.4 107
LARSEN CREEK 9000 4.2 -M * 7.1 -M *
SOUTH PASS 9040 5.5 5.4 102 4.8 7.1 68
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Basin wide percent 118 88
LOWER N. PLATTE
CASPER MTN. 7900 -M 4.8 * -M 6.5 *
LAPRELE CREEK 8375 .7 3.0 23 -M 5.1 *
RENO HILL 8400 1.5 5.0 30 2.9 6.2 47
WINDY PEAK 7900 .4 2.5 16 2.8 4.4 64
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Basin wide percent 25 54
LARAMIE RIVER
BROOKLYN LAKE 10240 5.4 6.7 81 5.1 7.7 66
CINNABAR PARK 9574 4.8 7.4 65 5.7 9.4 61
CROW CREEK 8330 .5 3.7 14 2.7 4.5 60
DEADMAN HILL 10220 4.8 5.8 83 4.5 6.6 68
RAWAH 9020 2.6 -M * 5.5 -M *
ROACH 9700 3.7 5.3 70 5.1 7.4 69
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Basin wide percent 66 65
S. PLATTE
BLACK MOUNTAIN 8920 1.8 -M * 3.0 -M *
CROW CREEK 8330 .5 3.7 14 2.7 4.5 60
DEADMAN HILL 10220 4.8 5.8 83 4.5 6.6 68
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Basin wide percent 56 65
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 1.3 2.8 46 3.5 5.9 59
DIVIDE PEAK 8880 4.5 6.5 69 6.3 8.6 73
ELK RIVER 8700 3.8 5.0 76 5.0 7.5 67
LITTLE SNAKE RIVER 8915 6.4 6.2 103 9.9 12.1 82
OLD BATTLE 10000 9.3 10.5 89 10.5 13.5 78
SAGE CREEK BASIN 7850 3.4 4.2 81 4.4 5.9 75
SANDSTONE RS 8150 4.2 3.7 114 4.2 7.2 58
WHISKEY PARK 8950 7.0 7.7 91 8.6 10.0 86
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Basin wide percent 86 74
UPPER GREEN RIVER
BIG SANDY OPENING 9080 5.9 4.7 126 6.4 5.2 123
BLIND BULL SUM 8650 9.4 7.5 125 7.6 7.7 99
EAST RIM DIVIDE 7930 4.0 3.3 121 4.4 4.5 98
ELKHART PARK G.S. 9400 5.1 4.4 116 5.7 5.3 108
GROS VENTRE SUMMIT 8750 5.7 4.7 121 6.1 5.2 117
GUNSIGHT PASS 9820 6.2 4.3 144 6.4 5.2 123
KENDALL R.S. 7740 5.4 3.7 146 6.9 5.3 130
LOOMIS PARK 8240 5.7 4.9 116 7.2 6.6 109
NEW FORK LAKE 8340 3.4 3.4 100 3.5 4.3 81
POCKET CREEK 9360 7.0 -M * 6.8 -M *
SNIDER BASIN 8060 4.1 3.9 105 6.2 5.3 117
SPRING CREEK DIVIDE 9000 9.8 8.0 122 9.2 8.9 103
TRIPLE PEAK 8500 8.3 6.8 122 10.6 9.1 116
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Basin wide percent 122 110
LOWER GREEN RIVER
BLACKS FORK JCT 8870 3.1 -M * 4.9 -M *
BUCK PASTURE 9700 5.1 -M * 7.1 -M *
EF BLACKS FORK GS 9308 5.1 -M * 4.8 -M *
HAMS FORK 7840 4.0 3.4 118 4.4 4.3 102
HEWINTA 9519 3.7 2.9 128 5.5 5.7 96
HICKERSON PARK 9145 2.1 2.0 105 3.8 4.4 86
HOLE-IN-ROCK 9150 3.9 2.3 170 4.6 4.2 110
INDIAN CREEK 9425 9.5 8.1 117 8.5 8.0 106
KELLEY R.S. 8180 5.7 4.6 124 6.9 6.9 100
SPIRIT LK 10223 3.8 4.2 90 6.9 8.7 79
STEEL CREEK PARK 10200 4.1 5.4 76 6.0 6.5 92
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Basin wide percent 112 96
UPPER BEAR RIVER
BEAR RIVER RS 8500 3.5 -M * 5.3 -M *
BUG LAKE 7950 6.7 5.3 126 8.5 7.5 113
BURTS MILLER RANCH 8000 2.3 2.2 105 3.6 4.9 73
CHALK CREEK #1 8993 7.9 8.4 94 10.2 9.9 103
HAYDEN FORK 9212 4.7 4.3 109 7.5 8.1 93
KELLEY R.S. 8180 5.7 4.6 124 6.9 6.9 100
LILY LAKE 9156 4.2 4.4 95 5.5 7.0 79
MONTE CRISTO 8960 8.7 8.2 106 11.2 9.8 114
SALT RIVER SUMMIT 7760 4.4 3.5 126 7.4 6.1 121
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Basin wide percent 109 101
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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 wide percent 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.
Reference period for comparison of conditions is 1981-2010.
Provisional data, subject to revision.
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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.
