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 TUESDAY: DECEMBER 20 , 2005
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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 6.0 6.6 91 9.7 8.7 111
COTTONWOOD CREEK 7600 7.3 7.7 95 10.8 11.4 95
GRANITE CREEK 6770 6.4 6.0 107 8.7 7.9 110
GRASSY LAKE 7265 11.0 11.9 92 15.6 14.3 109
GROS VENTRE SUMMIT 8750 4.9 5.8 84 5.9 5.6 105
LEWIS LAKE DIVIDE 7850 10.4 12.0 87 14.4 14.6 99
PHILLIPS BENCH 8200 9.4 10.3 91 11.5 11.1 104
SALT RIVER SUMMIT 7600 4.8 4.3 112 6.7 7.5 89
SNAKE RIVER STATION 6920 5.8 6.4 91 10.4 9.2 113
SPRING CREEK DIVIDE 9000 9.5 10.5 90 10.0 10.8 93
THUMB DIVIDE 7980 5.9 6.2 95 8.2 7.7 106
TOGWOTEE PASS 9580 10.4 9.9 105 11.1 10.2 109
TWO OCEAN PLATEAU 9240 14.7 11.5 128 12.6 11.4 111
WILLOW CREEK 8450 9.3 11.8 79 14.0 13.1 107
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Basin wide percent of average 96 104
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 10.0 9.8 102 8.4 8.4 100
BLACK BEAR 8170 15.7 14.4 109 17.1 14.9 115
CANYON 8090 5.5 5.0 110 7.9 6.6 120
FISHER CREEK 9100 15.7 13.8 114 15.7 14.3 110
MADISON PLATEAU 7750 8.5 9.4 90 11.9 10.4 114
NORTHEAST ENTRANCE 7350 3.5 4.1 85 5.6 5.5 102
PARKER PEAK 9400 8.2 9.1 90 8.4 7.2 117
SYLVAN LAKE 8420 6.9 8.9 78 10.4 9.5 109
THUMB DIVIDE 7980 5.9 6.2 95 8.2 7.7 106
TWO OCEAN PLATEAU 9240 14.7 11.5 128 12.6 11.4 111
WHISKEY CREEK 6800 4.2 6.2 68 9.2 8.4 110
WHITE MILL 8700 9.1 9.5 96 9.3 10.8 86
WOLVERINE 7650 4.5 4.7 96 4.5 6.0 75
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Basin wide percent of average 100 107
WIND RIVER
BURROUGHS CREEK 8750 -M 5.6 * 7.6 6.8 112
COLD SPRINGS 9630 1.9 4.1 46 4.3 5.1 84
DEER PARK 9700 5.5 5.9 93 7.1 9.4 76
HOBBS PARK 10100 3.4 6.9 49 4.8 5.7 84
LITTLE WARM 9370 3.8 4.6 83 5.8 5.9 98
SOUTH PASS 9040 5.1 7.2 71 6.6 8.0 82
ST. LAWRENCE ALT 8620 .8 3.4 24 2.9 4.2 69
TOGWOTEE PASS 9580 10.4 9.9 105 11.1 10.2 109
TOWNSEND CREEK 8700 2.2 3.9 56 4.9 5.4 91
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Basin wide percent of average 72 91
BIGHORN BASIN
BALD MTN. 9380 7.1 8.3 86 5.6 7.3 77
BEAR TRAP MEADOW 8200 2.4 2.2 109 4.4 4.1 107
BLACKWATER 9780 9.4 10.5 90 8.4 9.4 89
BONE SPRINGS DIV 9350 6.8 6.8 100 6.7 6.4 105
EVENING STAR 9200 9.0 11.9 76 12.3 11.1 111
GRAVE SPRINGS 8550 3.5 3.4 103 5.4 4.4 123
KIRWIN 9550 5.5 5.3 104 5.9 5.2 113
MARQUETTE 8760 1.2 4.5 27 4.2 4.8 88
MIDDLE POWDER 7760 5.4 4.9 110 5.9 6.1 97
OWL CREEK 8975 1.0 2.4 42 3.3 2.6 127
POWDER RIVER PASS 9480 4.0 4.5 89 5.7 5.3 108
SHELL CREEK 9580 5.9 6.4 92 5.8 5.8 100
SYLVAN LAKE 8420 6.9 8.9 78 10.4 9.5 109
SYLVAN ROAD 7120 4.0 5.3 75 8.2 8.7 94
TIMBER CREEK 7950 -M 2.7 * -M 3.4 *
YOUNTS PEAK 8350 -M 6.7 * 9.3 7.0 133
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Basin wide percent of average 85 104
SHOSHONE RIVER
BLACKWATER 9780 9.4 10.5 90 8.4 9.4 89
EVENING STAR 9200 9.0 11.9 76 12.3 11.1 111
KIRWIN 9550 5.5 5.3 104 5.9 5.2 113
MARQUETTE 8760 1.2 4.5 27 4.2 4.8 88
SYLVAN LAKE 8420 6.9 8.9 78 10.4 9.5 109
SYLVAN ROAD 7120 4.0 5.3 75 8.2 8.7 94
YOUNTS PEAK 8350 -M 6.7 * 9.3 7.0 133
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Basin wide percent of average 78 105
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.4 2.2 109 4.4 4.1 107
BIG GOOSE 7990 2.5 3.6 69 4.6 3.9 118
BONE SPRINGS DIV 9350 6.8 6.8 100 6.7 6.4 105
BURGESS JUNCTION 7880 4.9 4.7 104 6.4 5.4 119
CLOUD PEAK RESERVOIR 9860 5.3 4.9 108 5.8 5.8 100
DOME LAKE 8880 5.1 5.3 96 6.0 6.1 98
GRAVE SPRINGS 8550 3.5 3.4 103 5.4 4.4 123
HANSEN SAWMILL 8360 1.6 2.8 57 3.3 3.9 85
MIDDLE POWDER 7760 5.4 4.9 110 5.9 6.1 97
POWDER RIVER PASS 9480 4.0 4.5 89 5.7 5.3 108
SUCKER CREEK 8880 4.7 4.4 107 7.2 5.8 124
TIE CREEK 6870 2.7 1.8 150 6.0 4.6 130
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Basin wide percent of average 99 109
BELLE FOURCHE
BLIND PARK 6890 2.9 2.8 104 4.8 5.5 87
COLE CANYON 5910 2.3 2.6 88 4.4 -M *
NORTH RAPID CREEK 6130 2.9 2.7 107 4.0 4.7 85
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Basin wide percent of average 100 86
UPPER N. PLATTE RIVER
COLUMBINE 9160 13.1 8.0 164 16.5 9.5 174
DIVIDE PEAK 8860 7.4 7.6 97 10.8 8.5 127
ELK RIVER 8700 7.0 5.5 127 9.9 7.5 132
JOE WRIGHT 10120 11.9 8.3 143 14.4 10.3 140
NORTH FRENCH CREEK 10130 14.3 11.2 128 15.4 10.3 150
OLD BATTLE 9920 26.6 12.6 211 18.6 13.4 139
SAGE CREEK BASIN 7850 4.1 4.4 93 6.6 4.9 135
SOUTH BRUSH CREEK 8440 5.9 4.3 137 9.4 6.8 138
TOWER 10500 21.7 17.6 123 23.7 15.1 157
WEBBER SPRINGS 9250 10.3 9.7 106 15.2 11.0 138
WILLOW CREEK PASS 9540 6.7 4.8 140 7.6 5.6 136
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Basin wide percent of average 137 144
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 10.1 8.9 113 7.8 8.6 91
CASPER MTN. 7850 4.4 6.1 72 7.3 6.4 114
DEADMAN HILL 10220 7.9 6.6 120 9.1 6.9 132
DEER PARK 9700 5.5 5.9 93 7.1 9.4 76
LAPRELE CREEK 8375 2.4 4.5 53 3.9 5.5 71
RENO HILL 8500 5.4 5.8 93 7.0 6.4 109
ROACH 9700 7.2 6.1 118 10.1 7.2 140
SAND LAKE 10050 14.4 12.8 112 14.7 9.9 148
SOUTH PASS 9040 5.1 7.2 71 6.6 8.0 82
WINDY PEAK 7900 1.9 3.1 61 3.9 4.8 81
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Basin wide percent of average 96 106
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.6 3.0 187 8.6 6.1 141
DIVIDE PEAK 8860 7.4 7.6 97 10.8 8.5 127
OLD BATTLE 9920 26.6 12.6 211 18.6 13.4 139
SANDSTONE RS 8150 5.7 4.0 142 10.6 7.6 139
WHISKEY PARK 8950 12.1 9.1 133 15.6 11.1 141
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Basin wide percent of average 158 137
UPPER GREEN RIVER
BIG SANDY OPENING 9080 3.8 5.8 66 4.8 5.7 84
BLIND BULL SUM 8900 8.3 10.9 76 7.5 9.3 81
EAST RIM DIVIDE 7930 3.8 4.9 78 4.5 4.9 92
ELKHART PARK G.S. 9400 4.8 5.2 92 5.7 5.8 98
GROS VENTRE SUMMIT 8750 4.9 5.8 84 5.9 5.6 105
KENDALL R.S. 7740 4.6 5.4 85 5.9 5.8 102
LOOMIS PARK 8240 6.1 6.7 91 7.0 7.0 100
NEW FORK LAKE 8340 3.8 4.4 86 4.2 5.1 82
SNIDER BASIN 8060 5.9 5.7 104 6.2 6.6 94
SPRING CREEK DIVIDE 9000 9.5 10.5 90 10.0 10.8 93
TRIPLE PEAK 8500 9.1 9.8 93 10.8 9.4 115
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Basin wide percent of average 86 95
LOWER GREEN RIVER
HAMS FORK 7840 4.0 4.3 93 4.6 4.9 94
HEWINTA 9500 4.3 3.3 130 6.8 6.2 110
HICKERSON PARK 9100 1.3 2.3 57 3.3 3.8 87
HOLE-IN-ROCK 9150 3.2 2.2 145 4.1 3.6 114
INDIAN CREEK 9425 9.3 10.3 90 9.0 10.2 88
KELLEY R.S. 8180 5.4 6.3 86 7.1 8.4 85
STEEL CREEK PARK 10100 5.8 5.6 104 7.4 6.7 110
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Basin wide percent of average 97 97
UPPER BEAR RIVER
BUG LAKE 7950 6.3 6.5 97 7.8 7.8 100
HAYDEN FORK 9100 -M 5.0 * -M 8.5 *
KELLEY R.S. 8180 5.4 6.3 86 7.1 8.4 85
LILY LAKE 9050 5.1 4.4 116 6.8 7.5 91
MONTE CRISTO 8960 9.1 8.6 106 10.2 10.2 100
SALT RIVER SUMMIT 7600 4.8 4.3 112 6.7 7.5 89
TRIAL LAKE 9960 9.8 8.5 115 10.5 9.5 111
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Basin wide percent of average 105 96
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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.