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 SUNDAY: DECEMBER 23 , 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 6.2 152 11.9 8.9 134
BLACK BEAR 8170 18.9 15.0 126 18.9 15.7 120
BLIND BULL SUM 8650 9.5 8.0 119 7.8 8.2 95
COTTONWOOD CREEK 7670 7.9 7.3 108 11.3 9.9 114
EAST RIM DIVIDE 7930 4.0 3.7 108 4.4 4.8 92
GRAND TARGHEE 9260 18.5 15.1 123 15.1 13.2 114
GRANITE CREEK 6770 6.9 5.0 138 9.0 8.2 110
GRASSY LAKE 7265 11.2 10.6 106 15.5 14.7 105
GROS VENTRE SUMMIT 8750 5.7 5.1 112 6.2 5.5 113
GUNSIGHT PASS 9820 6.3 4.7 134 6.6 5.6 118
LEWIS LAKE DIVIDE 7850 15.7 10.9 144 19.0 14.7 129
PHILLIPS BENCH 8200 10.1 9.1 111 12.3 11.1 111
SALT RIVER SUMMIT 7760 4.4 4.0 110 7.5 6.6 114
SNAKE RIVER STATION 6920 6.9 5.4 128 11.8 9.7 122
SPRING CREEK DIVIDE 9000 10.0 8.3 120 10.5 9.6 109
THUMB DIVIDE 7980 8.0 5.3 151 9.5 7.7 123
TOGWOTEE PASS 9580 10.5 9.8 107 11.3 10.2 111
TWO OCEAN PLATEAU 9240 15.3 11.0 139 13.3 11.3 118
WILLOW CREEK 8380 10.2 9.4 109 14.5 13.8 105
YOUNTS PEAK 8350 7.2 6.0 120 6.6 6.8 97
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Basin wide percent 123 114
MADISON-GALLATIN
BLACK BEAR 8170 18.9 15.0 126 18.9 15.7 120
CANYON 7870 5.1 4.6 111 6.5 7.0 93
MADISON PLATEAU 7750 11.6 9.1 127 14.3 10.7 134
WEST YELLOWSTONE 6700 3.8 3.9 97 8.0 6.1 131
WHISKEY CREEK 6800 4.7 5.7 82 10.5 8.6 122
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Basin wide percent 115 121
YELLOWSTONE
BEARTOOTH LAKE 9360 8.2 8.8 93 8.6 8.1 106
BURNT MTN 5880 .9 1.8 50 4.8 6.4 75
CANYON 7870 5.1 4.6 111 6.5 7.0 93
COLE CREEK 7850 3.3 5.7 58 4.6 6.1 75
EVENING STAR 9200 12.4 9.8 127 14.5 11.7 124
FISHER CREEK 9100 18.3 13.3 138 17.9 13.3 135
NORTHEAST ENTRANCE 7350 2.8 3.0 93 6.0 5.5 109
PARKER PEAK 9400 10.0 8.6 116 10.3 7.7 134
SYLVAN LAKE 8420 8.8 8.1 109 12.8 10.1 127
THUMB DIVIDE 7980 8.0 5.3 151 9.5 7.7 123
TWO OCEAN PLATEAU 9240 15.3 11.0 139 13.3 11.3 118
WHITE MILL 8700 11.2 8.8 127 12.2 10.1 121
WOLVERINE 7650 4.0 4.0 100 5.0 5.6 89
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Basin wide percent 117 114
WIND RIVER
BURROUGHS CREEK 8750 6.3 5.4 117 6.6 6.9 96
CASTLE CREEK 8400 3.2 -M * 4.5 -M *
COLD SPRINGS 9630 3.9 2.9 134 4.8 4.6 104
DEER PARK 9700 6.9 5.4 128 8.0 7.7 104
HOBBS PARK 10100 5.6 6.0 93 5.4 5.7 95
KIRWIN 9550 4.8 4.1 117 6.0 5.1 118
LITTLE WARM 9370 5.2 4.0 130 6.6 5.6 118
OWL CREEK 8975 2.1 2.3 91 2.5 2.7 93
SOUTH PASS 9040 5.5 5.7 96 5.1 7.5 68
ST. LAWRENCE ALT 8620 1.4 2.6 54 3.3 4.0 82
TOGWOTEE PASS 9580 10.5 9.8 107 11.3 10.2 111
TOWNSEND CREEK 8700 1.6 3.5 46 3.7 5.4 69
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Basin wide percent 104 97
BIGHORN BASIN
BALD MTN. 9380 5.0 7.3 68 3.6 7.2 50
BEAR TRAP MEADOW 8200 3.8 2.4 158 4.9 3.9 126
BONE SPRINGS DIV 9350 5.7 6.7 85 5.5 6.5 85
GRAVE SPRINGS 8550 1.7 2.9 59 3.1 4.6 67
KIRWIN 9550 4.8 4.1 117 6.0 5.1 118
MARQUETTE 8760 2.3 -M * 3.7 -M *
MIDDLE POWDER 7760 3.0 4.4 68 -M 5.7 *
OWL CREEK 8975 2.1 2.3 91 2.5 2.7 93
POWDER RIVER PASS 9480 5.4 4.1 132 6.1 5.4 113
SHELL CREEK 9580 7.1 6.6 108 6.8 6.0 113
TIMBER CREEK 7950 .9 1.9 47 2.8 3.8 74
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Basin wide percent 93 91
SHOSHONE RIVER
BLACKWATER 9780 12.1 9.4 129 11.8 9.0 131
EVENING STAR 9200 12.4 9.8 127 14.5 11.7 124
MARQUETTE 8760 2.3 -M * 3.7 -M *
SYLVAN ROAD 7120 4.8 4.6 104 9.5 8.2 116
YOUNTS PEAK 8350 7.2 6.0 120 6.6 6.8 97
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Basin wide percent 122 119
POWDER RIVER
BEAR TRAP MEADOW 8200 3.8 2.4 158 4.9 3.9 126
CLOUD PEAK RESERVOIR 9860 4.6 5.4 85 5.1 5.8 88
GRAVE SPRINGS 8550 1.7 2.9 59 3.1 4.6 67
HANSEN SAWMILL 8360 2.6 2.6 100 4.2 3.8 111
MIDDLE POWDER 7760 3.0 4.4 68 -M 5.7 *
POWDER RIVER PASS 9480 5.4 4.1 132 6.1 5.4 113
SOLDIER PARK 8720 1.6 -M * 3.8 -M *
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Basin wide percent 97 100
TONGUE RIVER
BIG GOOSE 7990 2.3 3.3 70 3.9 5.0 78
BONE SPRINGS DIV 9350 5.7 6.7 85 5.5 6.5 85
BURGESS JUNCTION 7880 2.4 4.2 57 3.3 5.5 60
DOME LAKE 8880 3.6 4.7 77 5.4 6.2 87
LITTLE GOOSE 8870 2.9 -M * 5.6 -M *
SUCKER CREEK 8880 3.8 4.5 84 4.1 6.2 66
TIE CREEK 6870 .6 1.4 43 3.8 5.1 75
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Basin wide percent 74 75
BELLE FOURCHE
COLE CANYON 5910 1.1 1.2 92 2.9 4.3 67
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Basin wide percent 92 67
CHEYENNE RIVER BASIN
BLIND PARK 6890 1.5 2.5 60 3.7 5.4 69
NORTH RAPID CREEK 6130 1.4 2.6 54 2.9 4.6 63
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Basin wide percent 57 66
UPPER N. PLATTE
ARAPAHO RIDGE 10960 6.8 -M * 7.1 -M *
BLACKHALL MTN 9820 8.4 -M * 10.3 -M *
COLUMBINE 9160 6.7 7.8 86 8.0 10.4 77
DIVIDE PEAK 8880 4.9 7.2 68 6.8 9.3 73
JOE WRIGHT 10120 7.8 8.7 90 10.2 11.0 93
LAPRELE CREEK 8375 .8 3.4 24 -M 5.4 *
MED BOW 10500 8.5 -M * 11.0 -M *
NORTH FRENCH CREEK 10130 7.6 10.4 73 8.2 10.8 76
NEVER SUMMER 10280 6.5 -M * 5.4 -M *
OLD BATTLE 10000 9.9 11.4 87 11.2 14.7 76
RAWAH 9020 3.3 -M * 6.1 -M *
SAGE CREEK BASIN 7850 3.7 4.8 77 4.6 6.4 72
SAND LAKE 10050 7.4 10.2 73 7.9 10.1 78
SOUTH BRUSH CREEK 8440 3.1 4.2 74 4.8 6.5 74
TOWER 10500 10.6 17.9 59 11.5 16.6 69
WEBBER SPRINGS 9250 7.5 8.5 88 8.8 11.2 79
WILLOW CREEK PASS 9540 4.8 -M * 6.0 5.9 102
ZIRKEL 9340 7.4 -M * 10.1 -M *
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Basin wide percent 74 78
SWEETWATER
DEER PARK 9700 6.9 5.4 128 8.0 7.7 104
LARSEN CREEK 9000 4.3 -M * 7.1 -M *
SOUTH PASS 9040 5.5 5.7 96 5.1 7.5 68
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Basin wide percent 112 86
LOWER N. PLATTE
CASPER MTN. 7900 -M 5.2 * -M 6.8 *
LAPRELE CREEK 8375 .8 3.4 24 -M 5.4 *
RENO HILL 8400 1.5 5.2 29 3.0 6.5 46
WINDY PEAK 7900 .6 2.8 21 3.0 4.7 64
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Basin wide percent 25 54
LARAMIE RIVER
BROOKLYN LAKE 10240 5.9 7.2 82 5.9 8.3 71
CINNABAR PARK 9574 5.3 7.7 69 6.4 10.1 63
CROW CREEK 8330 1.9 3.9 49 3.4 4.9 69
DEADMAN HILL 10220 5.5 6.5 85 5.3 7.1 75
RAWAH 9020 3.3 -M * 6.1 -M *
ROACH 9700 4.8 6.0 80 6.2 8.1 77
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Basin wide percent 75 71
S. PLATTE
BLACK MOUNTAIN 8920 2.7 -M * 3.9 -M *
CROW CREEK 8330 1.9 3.9 49 3.4 4.9 69
DEADMAN HILL 10220 5.5 6.5 85 5.3 7.1 75
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Basin wide percent 71 72
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 1.5 3.3 45 3.7 6.4 58
DIVIDE PEAK 8880 4.9 7.2 68 6.8 9.3 73
ELK RIVER 8700 4.5 5.7 79 5.7 8.1 70
LITTLE SNAKE RIVER 8915 6.6 7.2 92 10.3 13.1 79
OLD BATTLE 10000 9.9 11.4 87 11.2 14.7 76
SAGE CREEK BASIN 7850 3.7 4.8 77 4.6 6.4 72
SANDSTONE RS 8150 4.4 4.0 110 4.7 7.8 60
WHISKEY PARK 8950 7.4 8.4 88 9.2 10.8 85
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Basin wide percent 82 73
UPPER GREEN RIVER
BIG SANDY OPENING 9080 5.9 4.9 120 6.4 5.6 114
BLIND BULL SUM 8650 9.5 8.0 119 7.8 8.2 95
EAST RIM DIVIDE 7930 4.0 3.7 108 4.4 4.8 92
ELKHART PARK G.S. 9400 5.1 4.7 109 5.9 5.7 104
GROS VENTRE SUMMIT 8750 5.7 5.1 112 6.2 5.5 113
GUNSIGHT PASS 9820 6.3 4.7 134 6.6 5.6 118
KENDALL R.S. 7740 5.4 4.1 132 6.9 5.7 121
LOOMIS PARK 8240 5.8 5.4 107 7.3 7.0 104
NEW FORK LAKE 8340 3.4 3.8 89 3.8 4.5 84
POCKET CREEK 9360 7.0 -M * 6.8 -M *
SNIDER BASIN 8060 4.2 4.5 93 6.3 5.8 109
SPRING CREEK DIVIDE 9000 10.0 8.3 120 10.5 9.6 109
TRIPLE PEAK 8500 8.3 7.4 112 10.7 9.7 110
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Basin wide percent 114 107
LOWER GREEN RIVER
BLACKS FORK JCT 8870 3.3 -M * 5.3 -M *
BUCK PASTURE 9700 5.4 -M * 7.6 -M *
EF BLACKS FORK GS 9308 6.2 -M * 5.0 -M *
HAMS FORK 7840 4.1 3.8 108 4.8 4.6 104
HEWINTA 9519 4.3 3.3 130 5.8 6.0 97
HICKERSON PARK 9145 2.4 2.3 104 4.1 4.6 89
HOLE-IN-ROCK 9150 4.3 2.6 165 5.0 4.3 116
INDIAN CREEK 9425 9.4 9.1 103 8.7 8.7 100
KELLEY R.S. 8180 5.7 5.3 108 7.1 7.4 96
SPIRIT LK 10223 4.4 4.3 102 7.4 9.0 82
STEEL CREEK PARK 10200 4.5 5.7 79 6.5 6.8 96
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Basin wide percent 107 96
UPPER BEAR RIVER
BEAR RIVER RS 8500 3.7 -M * 5.6 -M *
BUG LAKE 7950 6.8 5.6 121 8.7 8.1 107
BURTS MILLER RANCH 8000 2.4 2.2 109 3.7 4.9 76
CHALK CREEK #1 8993 8.0 9.2 87 10.4 10.5 99
HAYDEN FORK 9212 4.8 4.6 104 7.8 8.6 91
KELLEY R.S. 8180 5.7 5.3 108 7.1 7.4 96
LILY LAKE 9156 4.5 4.6 98 5.9 7.4 80
MONTE CRISTO 8960 8.7 9.0 97 11.2 10.4 108
SALT RIVER SUMMIT 7760 4.4 4.0 110 7.5 6.6 114
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Basin wide percent 102 97
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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.
