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 THURSDAY: DECEMBER 13 , 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 8.0 5.2 154 10.4 7.7 135
BLACK BEAR 8170 15.7 12.6 125 16.8 13.6 124
BLIND BULL SUM 8650 7.6 6.7 113 6.4 7.2 89
COTTONWOOD CREEK 7670 6.4 6.1 105 9.7 8.5 114
EAST RIM DIVIDE 7930 3.1 2.7 115 3.6 4.2 86
GRAND TARGHEE 9260 17.4 11.9 146 13.8 11.2 123
GRANITE CREEK 6770 5.6 4.0 140 7.6 7.0 109
GRASSY LAKE 7265 8.9 8.8 101 13.5 12.6 107
GROS VENTRE SUMMIT 8750 4.8 4.6 104 5.2 4.9 106
GUNSIGHT PASS 9820 5.3 4.1 129 5.6 4.9 114
LEWIS LAKE DIVIDE 7850 12.7 9.3 137 15.9 12.7 125
PHILLIPS BENCH 8200 8.7 7.6 114 10.8 9.6 112
SALT RIVER SUMMIT 7760 3.3 3.1 106 6.1 5.6 109
SNAKE RIVER STATION 6920 5.7 4.4 130 10.5 8.4 125
SPRING CREEK DIVIDE 9000 7.9 6.9 114 8.6 8.3 104
THUMB DIVIDE 7980 6.7 4.1 163 8.3 6.8 122
TOGWOTEE PASS 9580 9.3 8.6 108 10.0 9.0 111
TWO OCEAN PLATEAU 9240 13.6 10.2 133 11.6 10.0 116
WILLOW CREEK 8380 8.3 7.7 108 12.5 11.9 105
YOUNTS PEAK 8350 5.9 5.2 113 5.7 6.1 93
----- -----
Basin wide percent 123 113
MADISON-GALLATIN
BLACK BEAR 8170 15.7 12.6 125 16.8 13.6 124
CANYON 7870 4.4 3.6 122 5.5 5.9 93
MADISON PLATEAU 7750 9.8 7.2 136 12.4 9.3 133
WEST YELLOWSTONE 6700 3.2 2.8 114 7.1 5.1 139
WHISKEY CREEK 6800 3.7 4.3 86 9.2 7.5 123
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Basin wide percent 121 123
YELLOWSTONE
BEARTOOTH LAKE 9360 7.0 7.4 95 7.5 6.9 109
BURNT MTN 5880 .7 1.5 47 4.6 5.8 79
CANYON 7870 4.4 3.6 122 5.5 5.9 93
COLE CREEK 7850 3.0 5.4 56 4.3 5.6 77
EVENING STAR 9200 11.2 8.5 132 13.3 10.3 129
FISHER CREEK 9100 16.0 10.8 148 15.8 11.5 137
NORTHEAST ENTRANCE 7350 2.3 2.5 92 5.5 4.9 112
PARKER PEAK 9400 8.9 7.4 120 9.2 6.8 135
SYLVAN LAKE 8420 7.7 6.6 117 11.5 8.8 131
THUMB DIVIDE 7980 6.7 4.1 163 8.3 6.8 122
TWO OCEAN PLATEAU 9240 13.6 10.2 133 11.6 10.0 116
WHITE MILL 8700 9.7 7.3 133 11.0 8.8 125
WOLVERINE 7650 3.6 3.1 116 4.6 4.9 94
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Basin wide percent 121 116
WIND RIVER
BURROUGHS CREEK 8750 5.5 4.7 117 5.7 6.1 93
CASTLE CREEK 8400 2.9 -M * 4.4 -M *
COLD SPRINGS 9630 3.5 2.6 135 4.4 4.2 105
DEER PARK 9700 6.1 4.8 127 7.1 6.8 104
HOBBS PARK 10100 5.1 5.6 91 4.9 5.2 94
KIRWIN 9550 4.0 3.9 103 5.1 4.7 109
LITTLE WARM 9370 4.7 3.6 131 6.0 5.1 118
OWL CREEK 8975 2.0 2.1 95 2.4 2.5 96
SOUTH PASS 9040 4.8 5.0 96 4.3 6.7 64
ST. LAWRENCE ALT 8620 1.2 2.6 46 3.1 3.7 84
TOGWOTEE PASS 9580 9.3 8.6 108 10.0 9.0 111
TOWNSEND CREEK 8700 1.3 3.1 42 3.5 5.0 70
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Basin wide percent 102 96
BIGHORN BASIN
BALD MTN. 9380 4.6 6.5 71 3.5 6.1 57
BEAR TRAP MEADOW 8200 3.3 1.9 174 4.6 3.6 128
BONE SPRINGS DIV 9350 5.2 5.9 88 5.1 5.7 89
GRAVE SPRINGS 8550 1.7 2.4 71 3.1 4.1 76
KIRWIN 9550 4.0 3.9 103 5.1 4.7 109
MARQUETTE 8760 1.7 -M * 3.1 -M *
MIDDLE POWDER 7760 3.0 3.4 88 5.9 5.0 118
OWL CREEK 8975 2.0 2.1 95 2.4 2.5 96
POWDER RIVER PASS 9480 5.1 3.6 142 5.7 4.8 119
SHELL CREEK 9580 6.5 5.5 118 6.3 5.3 119
TIMBER CREEK 7950 .7 2.0 35 2.7 3.5 77
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Basin wide percent 97 98
SHOSHONE RIVER
BLACKWATER 9780 10.3 8.0 129 10.0 8.0 125
EVENING STAR 9200 11.2 8.5 132 13.3 10.3 129
MARQUETTE 8760 1.7 -M * 3.1 -M *
SYLVAN ROAD 7120 3.9 3.8 103 8.4 7.2 117
YOUNTS PEAK 8350 5.9 5.2 113 5.7 6.1 93
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Basin wide percent 123 118
POWDER RIVER
BEAR TRAP MEADOW 8200 3.3 1.9 174 4.6 3.6 128
CLOUD PEAK RESERVOIR 9860 4.2 4.6 91 5.3 5.2 102
GRAVE SPRINGS 8550 1.7 2.4 71 3.1 4.1 76
HANSEN SAWMILL 8360 2.4 2.0 120 3.9 3.4 115
MIDDLE POWDER 7760 3.0 3.4 88 5.9 5.0 118
POWDER RIVER PASS 9480 5.1 3.6 142 5.7 4.8 119
SOLDIER PARK 8720 1.4 -M * 3.7 -M *
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Basin wide percent 110 109
TONGUE RIVER
BIG GOOSE 7990 2.1 3.0 70 3.7 4.5 82
BONE SPRINGS DIV 9350 5.2 5.9 88 5.1 5.7 89
BURGESS JUNCTION 7880 2.3 3.6 64 3.1 4.8 65
DOME LAKE 8880 3.3 4.2 79 5.1 5.5 93
LITTLE GOOSE 8870 2.6 -M * 5.4 -M *
SUCKER CREEK 8880 3.5 3.9 90 3.9 5.4 72
TIE CREEK 6870 .6 1.1 55 3.7 4.6 80
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Basin wide percent 78 81
BELLE FOURCHE
COLE CANYON 5910 1.0 1.1 91 2.8 3.9 72
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Basin wide percent 91 72
CHEYENNE RIVER BASIN
BLIND PARK 6890 1.2 2.0 60 3.4 4.8 71
NORTH RAPID CREEK 6130 1.2 2.2 55 2.6 4.1 63
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Basin wide percent 57 67
UPPER N. PLATTE
ARAPAHO RIDGE 10960 4.3 -M * 4.7 -M *
BLACKHALL MTN 9820 5.6 -M * 7.5 -M *
COLUMBINE 9160 3.7 6.0 62 5.3 8.7 61
DIVIDE PEAK 8880 2.9 -M * 4.7 8.0 59
JOE WRIGHT 10120 7.1 7.4 96 8.5 9.6 89
LAPRELE CREEK 8375 .6 -M * 2.3 -M *
MED BOW 10500 6.1 -M * 8.7 -M *
NORTH FRENCH CREEK 10130 5.6 -M * 6.4 9.2 70
NEVER SUMMER 10280 5.3 -M * 4.6 -M *
OLD BATTLE 10000 6.4 -M * 7.5 12.4 60
RAWAH 9020 2.2 -M * 5.0 -M *
SAGE CREEK BASIN 7850 2.1 -M * 3.1 -M *
SAND LAKE 10050 5.4 -M * 6.1 8.8 69
SOUTH BRUSH CREEK 8440 2.2 -M * 3.8 5.6 68
TOWER 10500 6.6 14.4 46 7.7 -M *
WEBBER SPRINGS 9250 4.7 -M * 6.0 -M *
WILLOW CREEK PASS 9540 3.5 -M * 4.7 5.3 89
ZIRKEL 9340 4.4 -M * 6.8 -M *
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Basin wide percent 63* 70*
SWEETWATER
DEER PARK 9700 6.1 4.8 127 7.1 6.8 104
LARSEN CREEK 9000 3.5 -M * 6.5 -M *
SOUTH PASS 9040 4.8 5.0 96 4.3 6.7 64
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Basin wide percent 111 84
LOWER N. PLATTE
CASPER MTN. 7900 -M -M * -M -M *
LAPRELE CREEK 8375 .6 -M * 2.3 -M *
RENO HILL 8400 1.4 -M * 2.8 -M *
WINDY PEAK 7900 .4 -M * 2.7 -M *
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Basin wide percent * *
LARAMIE RIVER
BROOKLYN LAKE 10240 4.0 -M * 4.1 7.1 58
CINNABAR PARK 9574 3.7 -M * 4.8 -M *
CROW CREEK 8330 .3 -M * 2.5 -M *
DEADMAN HILL 10220 4.2 5.3 79 4.1 6.2 66
RAWAH 9020 2.2 -M * 5.0 -M *
ROACH 9700 3.0 4.8 62 4.4 6.9 64
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Basin wide percent 71* 62
S. PLATTE
BLACK MOUNTAIN 8920 1.7 -M * 2.9 -M *
CROW CREEK 8330 .3 -M * 2.5 -M *
DEADMAN HILL 10220 4.2 5.3 79 4.1 6.2 66
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Basin wide percent 79* 66*
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .3 -M * 2.6 5.5 47
DIVIDE PEAK 8880 2.9 -M * 4.7 8.0 59
ELK RIVER 8700 2.8 4.4 64 4.2 6.9 61
LITTLE SNAKE RIVER 8915 4.0 -M * 7.6 -M *
OLD BATTLE 10000 6.4 -M * 7.5 12.4 60
SAGE CREEK BASIN 7850 2.1 -M * 3.1 -M *
SANDSTONE RS 8150 2.4 -M * 2.9 6.5 45
WHISKEY PARK 8950 5.0 -M * 6.8 -M *
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Basin wide percent 64* 56
UPPER GREEN RIVER
BIG SANDY OPENING 9080 5.1 4.4 116 5.7 4.9 116
BLIND BULL SUM 8650 7.6 6.7 113 6.4 7.2 89
EAST RIM DIVIDE 7930 3.1 2.7 115 3.6 4.2 86
ELKHART PARK G.S. 9400 4.1 4.0 102 5.0 5.0 100
GROS VENTRE SUMMIT 8750 4.8 4.6 104 5.2 4.9 106
GUNSIGHT PASS 9820 5.3 4.1 129 5.6 4.9 114
KENDALL R.S. 7740 4.4 3.3 133 5.8 4.9 118
LOOMIS PARK 8240 4.5 4.2 107 6.0 6.1 98
NEW FORK LAKE 8340 2.6 3.1 84 3.0 4.0 75
POCKET CREEK 9360 6.2 -M * 6.2 -M *
SNIDER BASIN 8060 3.2 3.5 91 5.3 4.9 108
SPRING CREEK DIVIDE 9000 7.9 6.9 114 8.6 8.3 104
TRIPLE PEAK 8500 6.7 6.0 112 9.2 8.5 108
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Basin wide percent 111 102
LOWER GREEN RIVER
BLACKS FORK JCT 8870 2.5 -M * 4.3 -M *
BUCK PASTURE 9700 4.1 -M * 6.3 -M *
EF BLACKS FORK GS 9308 3.7 -M * 4.4 -M *
HAMS FORK 7840 2.8 3.1 90 4.0 4.1 98
HEWINTA 9519 2.9 2.5 116 4.7 5.4 87
HICKERSON PARK 9145 1.6 1.9 84 3.3 4.2 79
HOLE-IN-ROCK 9150 3.1 2.1 148 3.9 4.0 98
INDIAN CREEK 9425 7.4 7.2 103 6.9 7.5 92
KELLEY R.S. 8180 4.1 4.1 100 5.4 6.4 84
SPIRIT LK 10223 3.0 3.9 77 6.1 8.0 76
STEEL CREEK PARK 10200 3.1 5.1 61 5.1 6.1 84
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Basin wide percent 94 86
UPPER BEAR RIVER
BEAR RIVER RS 8500 2.8 -M * 4.7 -M *
BUG LAKE 7950 5.2 4.7 111 7.2 7.0 103
BURTS MILLER RANCH 8000 1.6 1.6 100 3.2 3.8 84
CHALK CREEK #1 8993 6.2 7.6 82 8.6 9.2 93
HAYDEN FORK 9212 3.5 3.8 92 6.1 7.5 81
KELLEY R.S. 8180 4.1 4.1 100 5.4 6.4 84
LILY LAKE 9156 3.1 3.9 79 4.5 6.5 69
MONTE CRISTO 8960 7.1 7.3 97 9.7 9.0 108
SALT RIVER SUMMIT 7760 3.3 3.1 106 6.1 5.6 109
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Basin wide percent 94 92
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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.
