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: JANUARY 10 , 2009
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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 9.5 9.5 100 12.3 11.8 104
COTTONWOOD CREEK 7670 14.7 11.1 132 18.0 15.3 118
GRAND TARGHEE 9260 21.4 -M * 19.3 -M *
GRANITE CREEK 6770 -M 9.0 * -M 10.8 *
GRASSY LAKE 7265 16.8 17.1 98 20.3 19.9 102
GROS VENTRE SUMMIT 8750 8.4 7.7 109 9.2 7.1 130
GUNSIGHT PASS 9820 8.1 -M * 9.1 -M *
LEWIS LAKE DIVIDE 7850 15.2 17.1 89 19.7 19.9 99
PHILLIPS BENCH 8200 15.4 14.4 107 17.6 15.4 114
SALT RIVER SUMMIT 7760 6.9 6.4 108 8.6 10.2 84
SNAKE RIVER STATION 6920 9.0 9.1 99 13.2 12.4 106
SPRING CREEK DIVIDE 9000 14.6 13.9 105 15.6 14.8 105
THUMB DIVIDE 7980 10.0 8.8 114 11.9 10.3 116
TOGWOTEE PASS 9580 17.2 13.2 130 18.7 13.5 139
TWO OCEAN PLATEAU 9240 21.8 15.1 144 16.8 15.0 112
WILLOW CREEK 8380 17.8 16.1 111 22.2 17.5 127
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Basin wide percent of average 111 111
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 13.6 13.0 105 12.5 11.2 112
BLACK BEAR 8170 18.2 19.8 92 20.0 20.2 99
CANYON 7870 7.2 7.1 101 8.1 8.7 93
FISHER CREEK 9100 21.8 18.7 117 20.7 19.5 106
MADISON PLATEAU 7750 10.7 12.8 84 12.7 13.9 91
NORTHEAST ENTRANCE 7350 6.0 5.8 103 8.5 7.2 118
PARKER PEAK 9400 15.2 11.9 128 -M 9.1 *
SYLVAN LAKE 8420 10.9 11.9 92 13.3 12.1 110
THUMB DIVIDE 7980 10.0 8.8 114 11.9 10.3 116
TWO OCEAN PLATEAU 9240 21.8 15.1 144 16.8 15.0 112
WHISKEY CREEK 6800 7.6 8.6 88 10.6 11.1 95
WHITE MILL 8700 14.2 12.7 112 14.3 14.4 99
WOLVERINE 7650 7.1 6.6 108 7.1 7.7 92
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Basin wide percent of average 108 103
WIND RIVER
BURROUGHS CREEK 8750 10.7 7.8 137 11.5 9.1 126
COLD SPRINGS 9630 4.4 5.0 88 6.2 6.1 102
DEER PARK 9700 5.7 7.5 76 9.5 12.0 79
HOBBS PARK 10100 6.6 8.2 80 6.8 6.9 99
LITTLE WARM 9370 6.4 6.1 105 8.3 7.5 111
SOUTH PASS 9040 6.3 9.0 70 8.8 10.0 88
ST. LAWRENCE ALT 8620 1.5 4.0 38 4.6 4.9 94
TOGWOTEE PASS 9580 17.2 13.2 130 18.7 13.5 139
TOWNSEND CREEK 8700 3.6 4.7 77 5.8 6.4 91
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Basin wide percent of average 95 105
BIGHORN BASIN
BALD MTN. 9380 12.4 10.9 114 10.5 9.5 111
BEAR TRAP MEADOW 8200 5.2 2.8 186 6.0 4.8 125
BLACKWATER 9780 15.0 13.3 113 13.6 11.8 115
BONE SPRINGS DIV 9350 12.0 8.7 138 9.4 8.0 118
EVENING STAR 9200 18.2 15.7 116 18.9 14.5 130
GRAVE SPRINGS 8550 3.5 4.7 74 5.0 5.4 93
KIRWIN 9550 8.1 6.4 127 9.1 6.4 142
MARQUETTE 8760 2.6 5.2 50 5.4 5.6 96
MIDDLE POWDER 7760 5.3 6.1 87 5.6 7.2 78
OWL CREEK 8975 3.3 2.8 118 3.4 3.1 110
POWDER RIVER PASS 9480 8.5 5.9 144 9.6 6.7 143
SHELL CREEK 9580 11.3 8.2 138 11.2 7.4 151
SYLVAN LAKE 8420 10.9 11.9 92 13.3 12.1 110
SYLVAN ROAD 7120 8.8 7.0 126 11.7 11.1 105
TIMBER CREEK 7950 2.4 3.2 75 5.6 3.9 144
YOUNTS PEAK 8350 12.5 9.1 137 11.3 9.3 122
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Basin wide percent of average 115 118
SHOSHONE RIVER
BLACKWATER 9780 15.0 13.3 113 13.6 11.8 115
EVENING STAR 9200 18.2 15.7 116 18.9 14.5 130
KIRWIN 9550 8.1 6.4 127 9.1 6.4 142
MARQUETTE 8760 2.6 5.2 50 5.4 5.6 96
SYLVAN LAKE 8420 10.9 11.9 92 13.3 12.1 110
SYLVAN ROAD 7120 8.8 7.0 126 11.7 11.1 105
YOUNTS PEAK 8350 12.5 9.1 137 11.3 9.3 122
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Basin wide percent of average 111 118
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.2 2.8 186 6.0 4.8 125
BIG GOOSE 7990 4.5 4.9 92 6.7 4.8 140
BONE SPRINGS DIV 9350 12.0 8.7 138 9.4 8.0 118
BURGESS JUNCTION 7880 6.8 6.0 113 7.6 6.6 115
CLOUD PEAK RESERVOIR 9860 9.8 6.4 153 9.7 6.9 141
DOME LAKE 8880 7.4 6.6 112 9.2 7.4 124
GRAVE SPRINGS 8550 3.5 4.7 74 5.0 5.4 93
HANSEN SAWMILL 8360 3.8 3.5 109 6.4 4.6 139
MIDDLE POWDER 7760 5.3 6.1 87 5.6 7.2 78
POWDER RIVER PASS 9480 8.5 5.9 144 9.6 6.7 143
SUCKER CREEK 8880 8.4 5.7 147 10.2 7.3 140
TIE CREEK 6870 2.2 3.1 71 8.4 5.6 150
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Basin wide percent of average 120 125
BELLE FOURCHE
BLIND PARK 6890 -M 4.2 * 9.9 6.7 148
COLE CANYON 5910 3.8 3.6 106 8.4 4.2 200
NORTH RAPID CREEK 6130 5.8 3.8 153 8.8 5.6 157
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Basin wide percent of average 130 164
UPPER N. PLATTE RIVER
COLUMBINE 9160 11.2 11.8 95 11.1 13.1 85
DIVIDE PEAK 8880 9.7 10.4 93 11.9 11.2 106
ELK RIVER 8700 11.1 8.7 128 11.4 10.1 113
JOE WRIGHT 10120 12.2 10.9 112 15.3 13.2 116
NORTH FRENCH CREEK 10130 14.9 14.9 100 14.7 13.4 110
OLD BATTLE 10000 14.9 16.1 93 18.7 18.0 104
SAGE CREEK BASIN 7850 4.7 6.0 78 6.6 6.5 102
SOUTH BRUSH CREEK 8440 7.0 5.8 121 8.7 8.7 100
TOWER 10500 -M 23.3 * -M 20.2 *
WEBBER SPRINGS 9250 11.5 12.8 90 14.3 14.6 98
WILLOW CREEK PASS 9540 6.5 6.1 107 6.9 7.0 99
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Basin wide percent of average 100 103
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 10.2 12.2 84 9.8 11.4 86
CASPER MTN. 7900 4.0 7.5 53 6.8 7.7 88
DEADMAN HILL 10220 8.0 8.5 94 8.6 8.7 99
DEER PARK 9700 5.7 7.5 76 9.5 12.0 79
LAPRELE CREEK 8375 -M 5.9 * -M 6.8 *
RENO HILL 8400 4.9 7.1 69 6.1 7.8 78
ROACH 9700 8.0 8.4 95 9.4 9.5 99
SAND LAKE 10050 13.1 16.4 80 12.0 12.9 93
SOUTH PASS 9040 6.3 9.0 70 8.8 10.0 88
WINDY PEAK 7900 2.5 3.7 68 3.5 6.0 58
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Basin wide percent of average 78 87
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.8 5.2 112 8.6 8.0 108
DIVIDE PEAK 8880 9.7 10.4 93 11.9 11.2 106
OLD BATTLE 10000 14.9 16.1 93 18.7 18.0 104
SANDSTONE RS 8150 7.3 6.5 112 9.8 10.0 98
WHISKEY PARK 8950 13.7 13.1 105 15.9 15.2 105
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Basin wide percent of average 100 104
UPPER GREEN RIVER
BIG SANDY OPENING 9080 6.7 7.7 87 6.9 7.3 95
BLIND BULL SUM 8650 14.3 14.8 97 12.4 12.5 99
EAST RIM DIVIDE 7930 5.0 6.7 75 8.0 6.5 123
ELKHART PARK G.S. 9400 7.7 7.0 110 9.1 7.4 123
GROS VENTRE SUMMIT 8750 8.4 7.7 109 9.2 7.1 130
GUNSIGHT PASS 9820 8.1 -M * 9.1 -M *
KENDALL R.S. 7740 6.7 7.6 88 9.2 7.8 118
LOOMIS PARK 8240 10.0 9.0 111 12.3 9.5 129
NEW FORK LAKE 8340 7.3 6.1 120 7.1 6.6 108
SNIDER BASIN 8060 8.2 7.7 106 9.1 9.0 101
SPRING CREEK DIVIDE 9000 14.6 13.9 105 15.6 14.8 105
TRIPLE PEAK 8500 14.7 13.3 111 16.4 12.8 128
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Basin wide percent of average 102 114
LOWER GREEN RIVER
HAMS FORK 7840 4.8 6.3 76 6.0 6.6 91
HEWINTA 9519 3.4 4.8 71 6.5 7.6 86
HICKERSON PARK 9145 1.3 3.3 39 3.9 4.5 87
HOLE-IN-ROCK 9150 1.8 3.1 58 4.0 4.1 98
INDIAN CREEK 9425 11.8 14.0 84 11.6 13.7 85
KELLEY R.S. 8180 7.2 8.5 85 8.9 11.4 78
STEEL CREEK PARK 10200 4.8 7.4 65 8.2 8.3 99
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Basin wide percent of average 74 87
UPPER BEAR RIVER
BUG LAKE 7950 6.3 9.7 65 9.0 10.3 87
HAYDEN FORK 9212 8.4 7.3 115 10.9 11.1 98
KELLEY R.S. 8180 7.2 8.5 85 8.9 11.4 78
LILY LAKE 9156 6.5 6.2 105 8.5 9.5 89
MONTE CRISTO 8960 12.4 13.1 95 13.5 13.5 100
SALT RIVER SUMMIT 7760 6.9 6.4 108 8.6 10.2 84
TRIAL LAKE 9992 10.9 12.0 91 11.0 12.7 87
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Basin wide percent of average 93 89
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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.