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 SATURDAY: DECEMBER 15 , 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 4.6 5.8 79 10.9 8.0 136
COTTONWOOD CREEK 7670 3.9 6.8 57 7.5 10.3 73
GRAND TARGHEE 9260 16.0 -M * 13.4 -M *
GRANITE CREEK 6770 2.5 5.1 49 8.2 7.2 114
GRASSY LAKE 7265 7.5 10.6 71 15.1 12.8 118
GROS VENTRE SUMMIT 8750 4.9 5.2 94 6.5 5.2 125
GUNSIGHT PASS 9820 3.1 -M * 6.1 -M *
LEWIS LAKE DIVIDE 7850 8.9 10.6 84 14.7 13.1 112
PHILLIPS BENCH 8200 6.4 9.1 70 10.8 10.0 108
SALT RIVER SUMMIT 7760 -M 3.8 * 3.4 6.6 52
SNAKE RIVER STATION 6920 3.2 5.7 56 10.9 8.4 130
SPRING CREEK DIVIDE 9000 4.4 9.4 47 5.8 9.7 60
THUMB DIVIDE 7980 3.5 5.5 64 7.6 6.9 110
TOGWOTEE PASS 9580 10.4 9.0 116 11.9 9.3 128
TWO OCEAN PLATEAU 9240 14.0 10.5 133 13.5 10.5 129
WILLOW CREEK 8380 5.6 10.5 53 11.0 12.0 92
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Basin wide percent of average 77 106
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 10.5 8.9 118 10.2 7.7 132
BLACK BEAR 8170 12.2 13.1 93 14.9 13.5 110
CANYON 7870 4.9 4.5 109 8.2 6.0 137
FISHER CREEK 9100 16.2 12.5 130 -M 12.9 *
MADISON PLATEAU 7750 7.2 8.5 85 11.3 9.6 118
NORTHEAST ENTRANCE 7350 1.7 3.6 47 6.1 5.1 120
PARKER PEAK 9400 9.9 8.4 118 10.2 6.7 152
SYLVAN LAKE 8420 7.0 8.2 85 11.3 8.9 127
THUMB DIVIDE 7980 3.5 5.5 64 7.6 6.9 110
TWO OCEAN PLATEAU 9240 14.0 10.5 133 13.5 10.5 129
WHISKEY CREEK 6800 4.0 5.5 73 9.5 7.6 125
WHITE MILL 8700 10.7 8.7 123 11.4 10.0 114
WOLVERINE 7650 2.9 4.1 71 6.5 5.7 114
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Basin wide percent of average 103 123
WIND RIVER
BURROUGHS CREEK 8750 6.6 5.2 127 9.2 6.2 148
COLD SPRINGS 9630 1.1 3.9 28 4.0 4.9 82
DEER PARK 9700 2.6 5.6 46 5.9 8.7 68
HOBBS PARK 10100 3.0 6.5 46 4.5 5.4 83
LITTLE WARM 9370 3.3 4.3 77 5.8 5.5 105
SOUTH PASS 9040 2.1 6.7 31 5.3 7.4 72
ST. LAWRENCE ALT 8620 1.1 3.2 34 3.0 4.0 75
TOGWOTEE PASS 9580 10.4 9.0 116 11.9 9.3 128
TOWNSEND CREEK 8700 .9 3.6 25 4.5 5.2 87
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Basin wide percent of average 65 96
BIGHORN BASIN
BALD MTN. 9380 5.0 7.5 67 5.8 6.6 88
BEAR TRAP MEADOW 8200 2.2 2.1 105 3.6 3.9 92
BLACKWATER 9780 10.4 9.9 105 10.0 8.9 112
BONE SPRINGS DIV 9350 4.7 6.3 75 5.5 5.9 93
EVENING STAR 9200 11.3 11.0 103 13.5 10.2 132
GRAVE SPRINGS 8550 2.5 3.1 81 4.4 4.1 107
KIRWIN 9550 5.8 5.0 116 6.9 4.9 141
MARQUETTE 8760 .3 4.3 7 4.4 4.7 94
MIDDLE POWDER 7760 2.6 4.4 59 3.8 5.7 67
OWL CREEK 8975 2.0 2.2 91 3.9 2.5 156
POWDER RIVER PASS 9480 3.4 4.1 83 5.3 4.9 108
SHELL CREEK 9580 6.5 6.0 108 7.2 5.4 133
SYLVAN LAKE 8420 7.0 8.2 85 11.3 8.9 127
SYLVAN ROAD 7120 3.3 4.8 69 10.8 8.3 130
TIMBER CREEK 7950 .6 2.6 23 4.7 3.3 142
YOUNTS PEAK 8350 6.3 6.1 103 9.0 6.4 141
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Basin wide percent of average 84 116
SHOSHONE RIVER
BLACKWATER 9780 10.4 9.9 105 10.0 8.9 112
EVENING STAR 9200 11.3 11.0 103 13.5 10.2 132
KIRWIN 9550 5.8 5.0 116 6.9 4.9 141
MARQUETTE 8760 .3 4.3 7 4.4 4.7 94
SYLVAN LAKE 8420 7.0 8.2 85 11.3 8.9 127
SYLVAN ROAD 7120 3.3 4.8 69 10.8 8.3 130
YOUNTS PEAK 8350 6.3 6.1 103 9.0 6.4 141
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Basin wide percent of average 90 126
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.2 2.1 105 3.6 3.9 92
BIG GOOSE 7990 2.5 3.2 78 5.5 3.8 145
BONE SPRINGS DIV 9350 4.7 6.3 75 5.5 5.9 93
BURGESS JUNCTION 7880 2.8 4.2 67 5.2 5.0 104
CLOUD PEAK RESERVOIR 9860 4.7 4.5 104 6.5 5.5 118
DOME LAKE 8880 3.2 4.9 65 6.8 5.8 117
GRAVE SPRINGS 8550 2.5 3.1 81 4.4 4.1 107
HANSEN SAWMILL 8360 2.5 2.6 96 4.7 3.7 127
MIDDLE POWDER 7760 2.6 4.4 59 3.8 5.7 67
POWDER RIVER PASS 9480 3.4 4.1 83 5.3 4.9 108
SUCKER CREEK 8880 3.3 4.0 82 5.0 5.4 93
TIE CREEK 6870 .4 1.5 27 4.9 4.3 114
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Basin wide percent of average 78 106
BELLE FOURCHE
BLIND PARK 6890 1.2 2.4 50 3.2 5.2 62
COLE CANYON 5910 .5 2.6 19 2.3 3.4 68
NORTH RAPID CREEK 6130 1.7 2.4 71 2.3 4.4 52
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Basin wide percent of average 46 60
UPPER N. PLATTE RIVER
COLUMBINE 9160 4.2 6.9 61 7.8 8.5 92
DIVIDE PEAK 8880 6.6 6.7 99 7.7 7.8 99
ELK RIVER 8700 4.8 4.7 102 7.4 6.7 110
JOE WRIGHT 10120 7.8 7.6 103 9.9 9.5 104
NORTH FRENCH CREEK 10130 9.3 10.2 91 10.4 9.4 111
OLD BATTLE 10000 9.1 11.6 78 11.2 12.1 93
SAGE CREEK BASIN 7850 3.9 3.9 100 6.0 4.6 130
SOUTH BRUSH CREEK 8440 4.1 3.8 108 7.2 6.3 114
TOWER 10500 9.4 16.1 58 12.4 13.7 91
WEBBER SPRINGS 9250 6.6 8.8 75 9.3 10.0 93
WILLOW CREEK PASS 9540 6.0 4.5 133 7.0 5.3 132
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Basin wide percent of average 85 103
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 6.4 7.9 81 8.0 7.9 101
CASPER MTN. 7900 1.8 5.7 32 5.4 6.2 87
DEADMAN HILL 10220 6.2 6.1 102 6.4 6.4 100
DEER PARK 9700 2.6 5.6 46 5.9 8.7 68
LAPRELE CREEK 8375 .7 4.1 17 3.7 5.0 74
RENO HILL 8400 3.4 5.3 64 5.1 6.0 85
ROACH 9700 6.2 5.5 113 7.9 6.6 120
SAND LAKE 10050 9.1 11.7 78 9.7 9.0 108
SOUTH PASS 9040 2.1 6.7 31 5.3 7.4 72
WINDY PEAK 7900 1.7 2.9 59 3.6 4.5 80
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Basin wide percent of average 65 90
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.5 2.6 96 5.4 5.5 98
DIVIDE PEAK 8880 6.6 6.7 99 7.7 7.8 99
OLD BATTLE 10000 9.1 11.6 78 11.2 12.1 93
SANDSTONE RS 8150 3.4 3.4 100 6.6 6.9 96
WHISKEY PARK 8950 6.4 8.0 80 9.9 10.1 98
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Basin wide percent of average 87 96
UPPER GREEN RIVER
BIG SANDY OPENING 9080 2.5 5.3 47 3.5 5.3 66
BLIND BULL SUM 8650 5.5 9.7 57 5.9 8.5 69
EAST RIM DIVIDE 7930 -M 4.4 * 3.7 4.4 84
ELKHART PARK G.S. 9400 2.6 4.7 55 3.8 5.4 70
GROS VENTRE SUMMIT 8750 4.9 5.2 94 6.5 5.2 125
GUNSIGHT PASS 9820 3.1 -M * 6.1 -M *
KENDALL R.S. 7740 1.9 4.6 41 4.6 5.2 88
LOOMIS PARK 8240 3.3 6.0 55 4.8 6.4 75
NEW FORK LAKE 8340 2.0 3.9 51 3.2 4.7 68
SNIDER BASIN 8060 1.4 5.1 27 3.2 5.9 54
SPRING CREEK DIVIDE 9000 4.4 9.4 47 5.8 9.7 60
TRIPLE PEAK 8500 5.1 8.7 59 8.0 8.5 94
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Basin wide percent of average 54 77
LOWER GREEN RIVER
HAMS FORK 7840 .7 3.7 19 2.7 4.5 60
HEWINTA 9519 .8 2.9 28 5.7 5.9 97
HICKERSON PARK 9145 .8 2.0 40 3.3 3.7 89
HOLE-IN-ROCK 9150 .7 1.9 37 4.2 3.4 124
INDIAN CREEK 9425 3.5 9.2 38 4.7 9.2 51
KELLEY R.S. 8180 1.8 5.7 32 4.4 7.5 59
STEEL CREEK PARK 10200 1.7 5.1 33 6.4 6.2 103
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Basin wide percent of average 33 78
UPPER BEAR RIVER
BUG LAKE 7950 -M 5.7 * 3.2 7.2 44
HAYDEN FORK 9212 2.7 4.3 63 5.8 7.8 74
KELLEY R.S. 8180 1.8 5.7 32 4.4 7.5 59
LILY LAKE 9156 1.5 4.0 38 5.4 7.0 77
MONTE CRISTO 8960 3.9 7.4 53 6.2 9.4 66
SALT RIVER SUMMIT 7760 -M 3.8 * 3.4 6.6 52
TRIAL LAKE 9992 3.9 7.6 51 5.7 8.6 66
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Basin wide percent of average 48 63
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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.