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 27 , 2006
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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 6.9 7.5 92 10.5 9.7 108
COTTONWOOD CREEK 7600 8.3 8.9 93 11.3 12.6 90
GRANITE CREEK 6770 5.6 6.9 81 8.8 8.8 100
GRASSY LAKE 7265 11.2 13.6 82 18.4 16.1 114
GROS VENTRE SUMMIT 8750 5.7 6.4 89 6.8 6.1 111
LEWIS LAKE DIVIDE 7850 11.1 13.7 81 17.1 16.3 105
PHILLIPS BENCH 8200 8.9 11.6 77 13.2 12.5 106
SALT RIVER SUMMIT 7600 4.9 5.0 98 7.2 8.4 86
SNAKE RIVER STATION 6920 6.8 7.3 93 13.6 10.3 132
SPRING CREEK DIVIDE 9000 8.7 11.6 75 9.9 12.1 82
THUMB DIVIDE 7980 5.4 7.0 77 7.7 8.5 91
TOGWOTEE PASS 9580 9.3 10.9 85 10.9 11.2 97
TWO OCEAN PLATEAU 9240 11.6 12.7 91 11.5 12.6 91
WILLOW CREEK 8450 10.1 13.2 77 14.2 14.5 98
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Basin wide percent of average 84 101
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 9.0 10.8 83 9.2 9.3 99
BLACK BEAR 8170 15.0 16.1 93 18.5 16.5 112
CANYON 8090 4.9 5.6 88 8.0 7.3 110
FISHER CREEK 9100 15.7 15.2 103 17.0 15.9 107
MADISON PLATEAU 7750 7.8 10.4 75 11.2 11.6 97
NORTHEAST ENTRANCE 7350 3.6 4.6 78 7.7 6.0 128
PARKER PEAK 9400 8.9 10.0 89 9.3 7.8 119
SYLVAN LAKE 8420 7.2 9.9 73 11.9 10.4 114
THUMB DIVIDE 7980 5.4 7.0 77 7.7 8.5 91
TWO OCEAN PLATEAU 9240 11.6 12.7 91 11.5 12.6 91
WHISKEY CREEK 6800 5.0 6.9 72 9.2 9.3 99
WHITE MILL 8700 9.2 10.5 88 11.5 12.0 96
WOLVERINE 7650 4.5 5.3 85 6.0 6.6 91
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Basin wide percent of average 86 104
WIND RIVER
BURROUGHS CREEK 8750 6.2 6.3 98 7.9 7.5 105
COLD SPRINGS 9630 2.2 4.4 50 3.4 5.5 62
DEER PARK 9700 4.3 6.4 67 6.9 10.3 67
HOBBS PARK 10100 3.9 7.3 53 4.5 6.1 74
LITTLE WARM 9370 4.1 5.0 82 5.5 6.4 86
SOUTH PASS 9040 5.1 7.8 65 6.5 8.7 75
ST. LAWRENCE ALT 8620 1.8 3.7 49 3.0 4.4 68
TOGWOTEE PASS 9580 9.3 10.9 85 10.9 11.2 97
TOWNSEND CREEK 8700 2.6 4.2 62 5.3 5.8 91
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Basin wide percent of average 71 82
BIGHORN BASIN
BALD MTN. 9380 8.3 9.1 91 6.7 8.0 84
BEAR TRAP MEADOW 8200 2.0 2.5 80 2.9 4.3 67
BLACKWATER 9780 10.2 11.4 89 10.1 10.2 99
BONE SPRINGS DIV 9350 7.7 7.4 104 6.5 6.9 94
EVENING STAR 9200 10.9 12.9 84 14.6 12.2 120
GRAVE SPRINGS 8550 2.7 3.7 73 3.2 4.7 68
KIRWIN 9550 4.3 5.7 75 5.5 5.6 98
MARQUETTE 8760 .5 4.8 10 3.7 5.1 73
MIDDLE POWDER 7760 3.7 5.2 71 4.1 6.5 63
OWL CREEK 8975 2.3 2.6 88 3.0 2.8 107
POWDER RIVER PASS 9480 3.7 5.0 74 4.6 5.7 81
SHELL CREEK 9580 7.4 6.9 107 5.4 6.3 86
SYLVAN LAKE 8420 7.2 9.9 73 11.9 10.4 114
SYLVAN ROAD 7120 4.1 5.8 71 9.5 9.5 100
TIMBER CREEK 7950 .4 2.9 14 2.9 3.6 81
YOUNTS PEAK 8350 5.2 7.4 70 8.1 7.7 105
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Basin wide percent of average 78 94
SHOSHONE RIVER
BLACKWATER 9780 10.2 11.4 89 10.1 10.2 99
EVENING STAR 9200 10.9 12.9 84 14.6 12.2 120
KIRWIN 9550 4.3 5.7 75 5.5 5.6 98
MARQUETTE 8760 .5 4.8 10 3.7 5.1 73
SYLVAN LAKE 8420 7.2 9.9 73 11.9 10.4 114
SYLVAN ROAD 7120 4.1 5.8 71 9.5 9.5 100
YOUNTS PEAK 8350 5.2 7.4 70 8.1 7.7 105
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Basin wide percent of average 73 104
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.0 2.5 80 2.9 4.3 67
BIG GOOSE 7990 2.3 4.1 56 3.6 4.3 84
BONE SPRINGS DIV 9350 7.7 7.4 104 6.5 6.9 94
BURGESS JUNCTION 7880 4.0 5.2 77 5.3 5.8 91
CLOUD PEAK RESERVOIR 9860 4.4 5.4 81 4.3 6.2 69
DOME LAKE 8880 4.3 5.8 74 5.2 6.6 79
GRAVE SPRINGS 8550 2.7 3.7 73 3.2 4.7 68
HANSEN SAWMILL 8360 .9 3.1 29 2.1 4.1 51
MIDDLE POWDER 7760 3.7 5.2 71 4.1 6.5 63
POWDER RIVER PASS 9480 3.7 5.0 74 4.6 5.7 81
SUCKER CREEK 8880 5.0 4.9 102 5.8 6.3 92
TIE CREEK 6870 1.0 2.2 45 5.0 4.9 102
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Basin wide percent of average 77 79
BELLE FOURCHE
BLIND PARK 6890 -M 3.2 * 3.7 5.9 63
COLE CANYON 5910 1.1 2.8 39 4.0 -M *
NORTH RAPID CREEK 6130 2.0 3.0 67 3.2 5.1 63
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Basin wide percent of average 53 63
UPPER N. PLATTE RIVER
COLUMBINE 9160 8.0 9.1 88 10.3 10.7 96
DIVIDE PEAK 8860 8.3 8.5 98 10.4 9.4 111
ELK RIVER 8700 6.9 6.5 106 8.4 8.3 101
JOE WRIGHT 10120 11.0 9.1 121 12.5 11.2 112
NORTH FRENCH CREEK 10130 11.5 12.5 92 12.1 11.3 107
OLD BATTLE 9920 11.8 13.8 86 14.4 14.9 97
SAGE CREEK BASIN 7850 5.9 4.9 120 7.1 5.4 131
SOUTH BRUSH CREEK 8440 5.7 4.7 121 7.8 7.4 105
TOWER 10500 14.3 19.3 74 16.6 16.7 99
WEBBER SPRINGS 9250 8.6 10.7 80 12.1 12.2 99
WILLOW CREEK PASS 9540 6.4 5.3 121 6.4 6.1 105
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Basin wide percent of average 94 104
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 8.7 10.0 87 9.3 9.5 98
CASPER MTN. 7850 4.2 6.5 65 5.9 6.9 86
DEADMAN HILL 10220 7.7 7.2 107 8.6 7.5 115
DEER PARK 9700 4.3 6.4 67 6.9 10.3 67
LAPRELE CREEK 8375 3.8 5.0 76 5.0 5.9 85
RENO HILL 8500 5.6 6.2 90 6.6 6.9 96
ROACH 9700 8.8 6.8 129 10.6 8.0 132
SAND LAKE 10050 11.7 14.0 84 11.8 10.9 108
SOUTH PASS 9040 5.1 7.8 65 6.5 8.7 75
WINDY PEAK 7900 3.7 3.3 112 5.1 5.2 98
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Basin wide percent of average 87 96
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.4 3.7 65 6.3 6.7 94
DIVIDE PEAK 8860 8.3 8.5 98 10.4 9.4 111
OLD BATTLE 9920 11.8 13.8 86 14.4 14.9 97
SANDSTONE RS 8150 3.7 4.8 77 7.2 8.4 86
WHISKEY PARK 8950 8.3 10.2 81 11.2 12.3 91
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Basin wide percent of average 84 96
UPPER GREEN RIVER
BIG SANDY OPENING 9080 5.4 6.5 83 5.8 6.2 94
BLIND BULL SUM 8900 -M 12.2 * 8.7 10.3 84
EAST RIM DIVIDE 7930 3.6 5.5 65 5.3 5.4 98
ELKHART PARK G.S. 9400 4.2 5.9 71 6.1 6.3 97
GROS VENTRE SUMMIT 8750 5.7 6.4 89 6.8 6.1 111
KENDALL R.S. 7740 4.7 6.1 77 6.8 6.4 106
LOOMIS PARK 8240 5.0 7.4 68 7.4 7.8 95
NEW FORK LAKE 8340 4.2 5.0 84 5.8 5.6 104
SNIDER BASIN 8060 5.0 6.4 78 6.5 7.4 88
SPRING CREEK DIVIDE 9000 8.7 11.6 75 9.9 12.1 82
TRIPLE PEAK 8500 8.8 11.0 80 11.6 10.4 112
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Basin wide percent of average 77 96
LOWER GREEN RIVER
HAMS FORK 7840 3.7 5.0 74 4.7 5.4 87
HEWINTA 9500 3.6 3.7 97 7.5 6.7 112
HICKERSON PARK 9100 2.0 2.7 74 5.2 4.0 130
HOLE-IN-ROCK 9150 2.9 2.5 116 4.6 3.8 121
INDIAN CREEK 9425 8.7 11.6 75 8.7 11.4 76
KELLEY R.S. 8180 5.5 7.1 77 7.7 9.4 82
STEEL CREEK PARK 10100 5.9 6.3 94 7.2 7.2 100
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Basin wide percent of average 83 95
UPPER BEAR RIVER
BUG LAKE 7950 5.7 7.6 75 7.9 8.6 92
HAYDEN FORK 9100 4.8 5.7 84 10.9 9.4 116
KELLEY R.S. 8180 5.5 7.1 77 7.7 9.4 82
LILY LAKE 9050 5.3 5.1 104 8.5 8.1 105
MONTE CRISTO 8960 9.6 10.0 96 11.3 11.3 100
SALT RIVER SUMMIT 7600 4.9 5.0 98 7.2 8.4 86
TRIAL LAKE 9960 5.1 9.7 53 10.5 10.5 100
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Basin wide percent of average 81 97
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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 1971-2000.
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.