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 WEDNESDAY: DECEMBER 19 , 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 9.3 5.7 163 11.9 8.4 142
BLACK BEAR 8170 18.5 14.0 132 18.5 14.8 125
BLIND BULL SUM 8650 9.2 7.6 121 7.5 7.8 96
COTTONWOOD CREEK 7670 7.7 6.8 113 11.2 9.4 119
EAST RIM DIVIDE 7930 3.9 3.5 111 4.3 4.6 93
GRAND TARGHEE 9260 18.0 14.1 128 14.5 12.6 115
GRANITE CREEK 6770 6.9 4.6 150 8.9 7.7 116
GRASSY LAKE 7265 10.8 9.9 109 14.9 13.8 108
GROS VENTRE SUMMIT 8750 5.6 4.8 117 5.9 5.2 113
GUNSIGHT PASS 9820 6.1 4.3 142 6.3 5.3 119
LEWIS LAKE DIVIDE 7850 15.5 10.0 155 18.4 13.8 133
PHILLIPS BENCH 8200 9.8 8.5 115 12.0 10.5 114
SALT RIVER SUMMIT 7760 4.2 3.6 117 7.3 6.1 120
SNAKE RIVER STATION 6920 6.8 5.1 133 11.6 9.3 125
SPRING CREEK DIVIDE 9000 9.7 8.0 121 10.1 9.0 112
THUMB DIVIDE 7980 7.7 4.9 157 9.0 7.4 122
TOGWOTEE PASS 9580 10.4 9.3 112 11.2 9.8 114
TWO OCEAN PLATEAU 9240 15.2 10.7 142 12.9 10.8 119
WILLOW CREEK 8380 10.0 8.6 116 14.2 13.1 108
YOUNTS PEAK 8350 7.0 5.6 125 6.4 6.5 98
----- -----
Basin wide percent 129 117
MADISON-GALLATIN
BLACK BEAR 8170 18.5 14.0 132 18.5 14.8 125
CANYON 7870 5.2 4.2 124 6.2 6.5 95
MADISON PLATEAU 7750 11.3 8.3 136 13.8 10.2 135
WEST YELLOWSTONE 6700 3.6 3.5 103 7.8 5.8 134
WHISKEY CREEK 6800 4.6 5.1 90 10.3 8.2 126
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Basin wide percent 123 124
YELLOWSTONE
BEARTOOTH LAKE 9360 8.1 8.3 98 8.5 7.7 110
BURNT MTN 5880 .9 1.7 53 4.8 6.1 79
CANYON 7870 5.2 4.2 124 6.2 6.5 95
COLE CREEK 7850 3.0 5.6 54 4.3 5.9 73
EVENING STAR 9200 12.3 9.2 134 14.3 11.2 128
FISHER CREEK 9100 18.2 12.4 147 17.7 12.5 142
NORTHEAST ENTRANCE 7350 2.8 2.8 100 6.0 5.3 113
PARKER PEAK 9400 9.5 8.1 117 10.0 7.4 135
SYLVAN LAKE 8420 8.8 7.6 116 12.7 9.5 134
THUMB DIVIDE 7980 7.7 4.9 157 9.0 7.4 122
TWO OCEAN PLATEAU 9240 15.2 10.7 142 12.9 10.8 119
WHITE MILL 8700 11.1 8.3 134 11.9 9.5 125
WOLVERINE 7650 4.1 3.5 117 4.6 5.4 85
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Basin wide percent 122 117
WIND RIVER
BURROUGHS CREEK 8750 6.2 5.1 122 6.1 6.5 94
CASTLE CREEK 8400 3.1 -M * 4.5 -M *
COLD SPRINGS 9630 3.8 2.8 136 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 5.5 93
KIRWIN 9550 4.6 4.0 115 5.7 4.9 116
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 7.2 67
ST. LAWRENCE ALT 8620 1.3 2.6 50 3.2 3.9 82
TOGWOTEE PASS 9580 10.4 9.3 112 11.2 9.8 114
TOWNSEND CREEK 8700 1.4 3.3 42 3.5 5.2 67
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Basin wide percent 107 97
BIGHORN BASIN
BALD MTN. 9380 4.9 7.0 70 3.7 6.7 55
BEAR TRAP MEADOW 8200 3.7 2.1 176 4.8 3.8 126
BONE SPRINGS DIV 9350 5.7 6.3 90 5.5 6.1 90
GRAVE SPRINGS 8550 1.7 2.6 65 3.1 4.4 70
KIRWIN 9550 4.6 4.0 115 5.7 4.9 116
MARQUETTE 8760 2.2 -M * 3.6 -M *
MIDDLE POWDER 7760 2.9 3.9 74 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 5.9 5.1 116
SHELL CREEK 9580 7.0 6.2 113 6.7 5.7 118
TIMBER CREEK 7950 .9 1.9 47 2.8 3.6 78
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Basin wide percent 97 96
SHOSHONE RIVER
BLACKWATER 9780 11.9 9.1 131 11.3 8.6 131
EVENING STAR 9200 12.3 9.2 134 14.3 11.2 128
MARQUETTE 8760 2.2 -M * 3.6 -M *
SYLVAN ROAD 7120 4.9 4.2 117 9.3 7.8 119
YOUNTS PEAK 8350 7.0 5.6 125 6.4 6.5 98
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Basin wide percent 128 121
POWDER RIVER
BEAR TRAP MEADOW 8200 3.7 2.1 176 4.8 3.8 126
CLOUD PEAK RESERVOIR 9860 4.5 5.1 88 5.5 5.6 98
GRAVE SPRINGS 8550 1.7 2.6 65 3.1 4.4 70
HANSEN SAWMILL 8360 2.5 2.4 104 4.1 3.6 114
MIDDLE POWDER 7760 2.9 3.9 74 6.0 5.4 111
POWDER RIVER PASS 9480 5.4 3.8 142 5.9 5.1 116
SOLDIER PARK 8720 1.5 -M * 3.7 -M *
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Basin wide percent 104 105
TONGUE RIVER
BIG GOOSE 7990 2.2 3.1 71 3.7 4.7 79
BONE SPRINGS DIV 9350 5.7 6.3 90 5.5 6.1 90
BURGESS JUNCTION 7880 2.3 3.9 59 3.1 5.1 61
DOME LAKE 8880 3.4 4.5 76 5.3 6.0 88
LITTLE GOOSE 8870 2.7 -M * 5.4 -M *
SUCKER CREEK 8880 3.7 4.2 88 4.0 5.9 68
TIE CREEK 6870 .6 1.2 50 3.8 4.9 78
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Basin wide percent 77 78
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 6.3 -M * 6.6 -M *
BLACKHALL MTN 9820 8.1 -M * 10.0 -M *
COLUMBINE 9160 6.4 7.1 90 7.7 9.7 79
DIVIDE PEAK 8880 4.6 6.6 70 6.5 8.8 74
JOE WRIGHT 10120 7.4 8.2 90 9.8 10.4 94
LAPRELE CREEK 8375 .6 3.1 19 -M 5.1 *
MED BOW 10500 8.4 -M * 10.8 -M *
NORTH FRENCH CREEK 10130 7.5 9.8 77 8.0 10.2 78
NEVER SUMMER 10280 6.3 -M * 5.2 -M *
OLD BATTLE 10000 9.6 10.7 90 10.6 13.7 77
RAWAH 9020 3.0 -M * 5.8 -M *
SAGE CREEK BASIN 7850 3.5 4.3 81 4.5 6.0 75
SAND LAKE 10050 7.2 9.6 75 7.6 9.6 79
SOUTH BRUSH CREEK 8440 3.1 4.0 78 4.5 6.2 73
TOWER 10500 10.5 16.8 62 10.4 15.7 66
WEBBER SPRINGS 9250 7.2 8.1 89 8.4 10.5 80
WILLOW CREEK PASS 9540 4.4 -M * 5.6 5.6 100
ZIRKEL 9340 7.2 -M * 9.7 -M *
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Basin wide percent 77 79
SWEETWATER
DEER PARK 9700 6.9 5.1 135 7.9 7.4 107
LARSEN CREEK 9000 4.0 -M * 7.0 -M *
SOUTH PASS 9040 5.5 5.4 102 4.8 7.2 67
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Basin wide percent 118 87
LOWER N. PLATTE
CASPER MTN. 7900 -M 4.9 * -M 6.5 *
LAPRELE CREEK 8375 .6 3.1 19 -M 5.1 *
RENO HILL 8400 1.4 5.0 28 2.8 6.2 45
WINDY PEAK 7900 .4 2.6 15 2.9 4.5 64
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Basin wide percent 22 53
LARAMIE RIVER
BROOKLYN LAKE 10240 5.6 6.8 82 5.4 7.8 69
CINNABAR PARK 9574 5.0 7.5 67 6.0 9.5 63
CROW CREEK 8330 .7 3.7 19 3.0 4.6 65
DEADMAN HILL 10220 5.1 6.0 85 5.0 6.6 76
RAWAH 9020 3.0 -M * 5.8 -M *
ROACH 9700 4.1 5.5 75 5.5 7.5 73
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Basin wide percent 69 69
S. PLATTE
BLACK MOUNTAIN 8920 2.2 -M * 3.4 -M *
CROW CREEK 8330 .7 3.7 19 3.0 4.6 65
DEADMAN HILL 10220 5.1 6.0 85 5.0 6.6 76
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Basin wide percent 60 71
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 1.5 3.0 50 3.6 6.0 60
DIVIDE PEAK 8880 4.6 6.6 70 6.5 8.8 74
ELK RIVER 8700 4.4 5.2 85 5.5 7.6 72
LITTLE SNAKE RIVER 8915 6.7 6.4 105 10.2 12.4 82
OLD BATTLE 10000 9.6 10.7 90 10.6 13.7 77
SAGE CREEK BASIN 7850 3.5 4.3 81 4.5 6.0 75
SANDSTONE RS 8150 4.4 3.7 119 4.4 7.2 61
WHISKEY PARK 8950 7.4 7.8 95 9.1 10.1 90
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Basin wide percent 88 76
UPPER GREEN RIVER
BIG SANDY OPENING 9080 5.7 4.7 121 6.3 5.3 119
BLIND BULL SUM 8650 9.2 7.6 121 7.5 7.8 96
EAST RIM DIVIDE 7930 3.9 3.5 111 4.3 4.6 93
ELKHART PARK G.S. 9400 5.0 4.5 111 5.5 5.4 102
GROS VENTRE SUMMIT 8750 5.6 4.8 117 5.9 5.2 113
GUNSIGHT PASS 9820 6.1 4.3 142 6.3 5.3 119
KENDALL R.S. 7740 5.4 3.8 142 6.6 5.4 122
LOOMIS PARK 8240 5.6 5.0 112 7.1 6.6 108
NEW FORK LAKE 8340 3.2 3.4 94 3.5 4.3 81
POCKET CREEK 9360 6.9 -M * 6.8 -M *
SNIDER BASIN 8060 4.1 4.0 102 5.9 5.4 109
SPRING CREEK DIVIDE 9000 9.7 8.0 121 10.1 9.0 112
TRIPLE PEAK 8500 8.2 6.9 119 10.4 9.2 113
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Basin wide percent 119 108
LOWER GREEN RIVER
BLACKS FORK JCT 8870 3.2 -M * 5.2 -M *
BUCK PASTURE 9700 5.4 -M * 7.5 -M *
EF BLACKS FORK GS 9308 5.3 -M * 5.1 -M *
HAMS FORK 7840 4.0 3.5 114 4.4 4.4 100
HEWINTA 9519 4.1 3.0 137 5.8 5.8 100
HICKERSON PARK 9145 2.4 2.1 114 4.0 4.4 91
HOLE-IN-ROCK 9150 4.2 2.3 183 5.0 4.2 119
INDIAN CREEK 9425 9.3 8.3 112 8.3 8.2 101
KELLEY R.S. 8180 5.6 4.7 119 6.6 7.0 94
SPIRIT LK 10223 4.2 4.2 100 7.3 8.7 84
STEEL CREEK PARK 10200 4.4 5.5 80 6.4 6.6 97
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Basin wide percent 114 97
UPPER BEAR RIVER
BEAR RIVER RS 8500 3.7 -M * 5.5 -M *
BUG LAKE 7950 6.6 5.3 125 8.4 7.6 111
BURTS MILLER RANCH 8000 2.4 2.2 109 3.6 4.9 73
CHALK CREEK #1 8993 8.0 8.6 93 10.4 10.0 104
HAYDEN FORK 9212 5.0 4.4 114 7.8 8.2 95
KELLEY R.S. 8180 5.6 4.7 119 6.6 7.0 94
LILY LAKE 9156 4.4 4.4 100 5.9 7.0 84
MONTE CRISTO 8960 8.5 8.4 101 11.2 9.9 113
SALT RIVER SUMMIT 7760 4.2 3.6 117 7.3 6.1 120
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Basin wide percent 107 101
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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.
