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 26 , 2007
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 6.5 7.3 89 12.9 9.4 137
COTTONWOOD CREEK 7670 6.5 8.6 76 9.7 12.2 80
GRAND TARGHEE 9260 20.1 -M * 15.6 -M *
GRANITE CREEK 6770 4.3 6.6 65 10.0 8.6 116
GRASSY LAKE 7265 10.8 13.1 82 18.6 15.5 120
GROS VENTRE SUMMIT 8750 5.9 6.2 95 7.4 5.9 125
GUNSIGHT PASS 9820 3.7 -M * 7.1 -M *
LEWIS LAKE DIVIDE 7850 12.5 13.1 95 18.5 15.8 117
PHILLIPS BENCH 8200 8.9 11.3 79 13.3 12.1 110
SALT RIVER SUMMIT 7760 2.5 4.7 53 5.0 8.0 62
SNAKE RIVER STATION 6920 5.3 7.0 76 13.1 10.0 131
SPRING CREEK DIVIDE 9000 6.4 11.4 56 7.6 11.7 65
THUMB DIVIDE 7980 5.7 6.8 84 9.5 8.2 116
TOGWOTEE PASS 9580 12.1 10.6 114 13.8 10.9 127
TWO OCEAN PLATEAU 9240 17.4 12.3 141 16.1 12.3 131
WILLOW CREEK 8380 8.7 12.8 68 14.4 14.1 102
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Basin wide percent of average 86 110
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 12.2 10.3 118 11.7 9.1 129
BLACK BEAR 8170 18.4 15.5 119 20.1 15.9 126
CANYON 7870 6.6 5.3 125 9.7 7.1 137
FISHER CREEK 9100 20.0 14.8 135 18.4 15.4 119
MADISON PLATEAU 7750 11.1 10.1 110 14.9 11.3 132
NORTHEAST ENTRANCE 7350 2.5 4.5 56 6.7 5.9 114
PARKER PEAK 9400 12.1 9.5 127 11.3 7.6 149
SYLVAN LAKE 8420 8.8 9.5 93 13.3 10.2 130
THUMB DIVIDE 7980 5.7 6.8 84 9.5 8.2 116
TWO OCEAN PLATEAU 9240 17.4 12.3 141 16.1 12.3 131
WHISKEY CREEK 6800 6.5 6.7 97 12.2 9.0 136
WHITE MILL 8700 12.4 10.2 122 12.2 11.7 104
WOLVERINE 7650 3.7 5.1 73 7.4 6.5 114
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Basin wide percent of average 114 126
WIND RIVER
BURROUGHS CREEK 8750 7.6 6.1 125 10.3 7.3 141
COLD SPRINGS 9630 1.9 4.4 43 4.7 5.4 87
DEER PARK 9700 4.8 6.1 79 8.2 10.1 81
HOBBS PARK 10100 4.5 7.2 62 6.1 6.0 102
LITTLE WARM 9370 3.9 4.9 80 6.5 6.2 105
SOUTH PASS 9040 4.1 7.5 55 7.2 8.6 84
ST. LAWRENCE ALT 8620 2.3 3.6 64 4.0 4.4 91
TOGWOTEE PASS 9580 12.1 10.6 114 13.8 10.9 127
TOWNSEND CREEK 8700 2.5 4.1 61 5.7 5.7 100
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Basin wide percent of average 80 103
BIGHORN BASIN
BALD MTN. 9380 6.1 8.9 69 6.8 7.7 88
BEAR TRAP MEADOW 8200 3.5 2.4 146 5.0 4.3 116
BLACKWATER 9780 11.8 11.0 107 11.2 10.1 111
BONE SPRINGS DIV 9350 6.2 7.3 85 6.3 6.7 94
EVENING STAR 9200 13.4 12.4 108 14.2 11.9 119
GRAVE SPRINGS 8550 3.4 3.7 92 5.1 4.5 113
KIRWIN 9550 6.6 5.5 120 7.9 5.5 144
MARQUETTE 8760 1.4 4.7 30 5.5 5.1 108
MIDDLE POWDER 7760 4.0 5.2 77 4.8 6.4 75
OWL CREEK 8975 2.5 2.5 100 4.2 2.8 150
POWDER RIVER PASS 9480 4.4 4.8 92 6.3 5.6 112
SHELL CREEK 9580 7.3 6.9 106 7.7 6.2 124
SYLVAN LAKE 8420 8.8 9.5 93 13.3 10.2 130
SYLVAN ROAD 7120 4.3 5.5 78 12.0 9.5 126
TIMBER CREEK 7950 1.5 2.9 52 5.4 3.6 150
YOUNTS PEAK 8350 7.5 7.1 106 10.1 7.4 136
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Basin wide percent of average 92 117
SHOSHONE RIVER
BLACKWATER 9780 11.8 11.0 107 11.2 10.1 111
EVENING STAR 9200 13.4 12.4 108 14.2 11.9 119
KIRWIN 9550 6.6 5.5 120 7.9 5.5 144
MARQUETTE 8760 1.4 4.7 30 5.5 5.1 108
SYLVAN LAKE 8420 8.8 9.5 93 13.3 10.2 130
SYLVAN ROAD 7120 4.3 5.5 78 12.0 9.5 126
YOUNTS PEAK 8350 7.5 7.1 106 10.1 7.4 136
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Basin wide percent of average 97 124
POWDER-TONGUE
BEAR TRAP MEADOW 8200 3.5 2.4 146 5.0 4.3 116
BIG GOOSE 7990 3.7 4.0 92 6.6 4.3 153
BONE SPRINGS DIV 9350 6.2 7.3 85 6.3 6.7 94
BURGESS JUNCTION 7880 4.5 5.2 87 6.6 5.7 116
CLOUD PEAK RESERVOIR 9860 5.8 5.3 109 7.1 6.1 116
DOME LAKE 8880 4.4 5.7 77 7.8 6.5 120
GRAVE SPRINGS 8550 3.4 3.7 92 5.1 4.5 113
HANSEN SAWMILL 8360 2.9 2.9 100 5.0 4.1 122
MIDDLE POWDER 7760 4.0 5.2 77 4.8 6.4 75
POWDER RIVER PASS 9480 4.4 4.8 92 6.3 5.6 112
SUCKER CREEK 8880 4.8 4.9 98 6.3 6.2 102
TIE CREEK 6870 1.8 2.2 82 5.8 4.8 121
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Basin wide percent of average 92 112
BELLE FOURCHE
BLIND PARK 6890 1.6 3.2 50 3.7 5.8 64
COLE CANYON 5910 1.4 3.0 47 3.0 3.7 81
NORTH RAPID CREEK 6130 2.3 2.9 79 2.9 5.0 58
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Basin wide percent of average 58 66
UPPER N. PLATTE RIVER
COLUMBINE 9160 6.0 8.7 69 9.5 10.3 92
DIVIDE PEAK 8880 9.5 8.2 116 10.1 9.2 110
ELK RIVER 8700 6.7 6.2 108 9.4 8.0 118
JOE WRIGHT 10120 9.0 8.8 102 11.2 10.9 103
NORTH FRENCH CREEK 10130 11.7 12.1 97 12.8 10.9 117
OLD BATTLE 10000 12.0 13.5 89 14.9 14.5 103
SAGE CREEK BASIN 7850 6.8 4.8 142 8.2 5.3 155
SOUTH BRUSH CREEK 8440 5.6 4.6 122 8.9 7.2 124
TOWER 10500 11.9 18.8 63 15.1 16.2 93
WEBBER SPRINGS 9250 8.9 10.4 86 11.7 11.9 98
WILLOW CREEK PASS 9540 6.6 5.1 129 7.8 6.0 130
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Basin wide percent of average 94 108
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 7.6 9.7 78 9.0 9.3 97
CASPER MTN. 7900 4.6 6.5 71 7.3 6.8 107
DEADMAN HILL 10220 7.1 7.0 101 7.3 7.3 100
DEER PARK 9700 4.8 6.1 79 8.2 10.1 81
LAPRELE CREEK 8375 1.8 4.9 37 4.7 5.7 82
RENO HILL 8400 5.2 6.1 85 6.8 6.7 101
ROACH 9700 7.9 6.6 120 9.8 7.7 127
SAND LAKE 10050 10.8 13.7 79 11.3 10.6 107
SOUTH PASS 9040 4.1 7.5 55 7.2 8.6 84
WINDY PEAK 7900 2.7 3.3 82 4.3 5.1 84
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Basin wide percent of average 79 97
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.0 3.4 147 7.7 6.5 118
DIVIDE PEAK 8880 9.5 8.2 116 10.1 9.2 110
OLD BATTLE 10000 12.0 13.5 89 14.9 14.5 103
SANDSTONE RS 8150 6.0 4.5 133 9.2 8.0 115
WHISKEY PARK 8950 9.1 9.8 93 13.2 11.9 111
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Basin wide percent of average 106 110
UPPER GREEN RIVER
BIG SANDY OPENING 9080 4.0 6.3 63 4.8 6.1 79
BLIND BULL SUM 8650 7.6 11.9 64 7.6 10.1 75
EAST RIM DIVIDE 7930 1.6 5.3 30 4.3 5.2 83
ELKHART PARK G.S. 9400 3.6 5.7 63 4.9 6.2 79
GROS VENTRE SUMMIT 8750 5.9 6.2 95 7.4 5.9 125
GUNSIGHT PASS 9820 3.7 -M * 7.1 -M *
KENDALL R.S. 7740 3.1 5.9 53 5.6 6.2 90
LOOMIS PARK 8240 5.1 7.3 70 6.3 7.5 84
NEW FORK LAKE 8340 2.7 4.8 56 3.7 5.4 69
SNIDER BASIN 8060 2.5 6.2 40 4.2 7.1 59
SPRING CREEK DIVIDE 9000 6.4 11.4 56 7.6 11.7 65
TRIPLE PEAK 8500 7.2 10.7 67 10.0 10.1 99
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Basin wide percent of average 61 81
LOWER GREEN RIVER
HAMS FORK 7840 1.9 4.8 40 3.5 5.2 67
HEWINTA 9519 1.9 3.6 53 6.8 6.6 103
HICKERSON PARK 9145 1.3 2.5 52 3.8 4.0 95
HOLE-IN-ROCK 9150 1.1 2.4 46 4.5 3.7 122
INDIAN CREEK 9425 6.3 11.2 56 6.9 10.9 63
KELLEY R.S. 8180 3.7 6.9 54 6.4 9.0 71
STEEL CREEK PARK 10200 3.2 6.1 52 7.7 7.0 110
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Basin wide percent of average 52 85
UPPER BEAR RIVER
BUG LAKE 7950 3.1 7.2 43 5.0 8.4 60
HAYDEN FORK 9212 4.2 5.5 76 7.5 9.1 82
KELLEY R.S. 8180 3.7 6.9 54 6.4 9.0 71
LILY LAKE 9156 2.8 4.9 57 6.7 8.0 84
MONTE CRISTO 8960 6.4 9.6 67 8.1 11.0 74
SALT RIVER SUMMIT 7760 2.5 4.7 53 5.0 8.0 62
TRIAL LAKE 9992 5.7 9.3 61 7.8 10.2 76
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Basin wide percent of average 59 73
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
If the Basin wide percent of average 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 Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average 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 average conditions is 1961-90.
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.