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: JANUARY 28 , 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 10.7 12.2 88 13.6 14.4 94
COTTONWOOD CREEK 7670 17.3 13.7 126 20.7 18.2 114
GRAND TARGHEE 9260 26.2 -M * 23.0 -M *
GRANITE CREEK 6770 11.2 11.8 95 15.7 13.3 118
GRASSY LAKE 7265 19.8 22.0 90 22.9 24.2 95
GROS VENTRE SUMMIT 8750 8.6 9.2 93 10.0 8.4 119
GUNSIGHT PASS 9820 9.4 -M * 10.5 -M *
LEWIS LAKE DIVIDE 7850 17.0 22.1 77 21.1 24.0 88
PHILLIPS BENCH 8200 17.5 17.8 98 19.5 18.9 103
SALT RIVER SUMMIT 7760 8.3 8.8 94 9.8 12.2 80
SNAKE RIVER STATION 6920 10.8 12.0 90 14.9 15.0 99
SPRING CREEK DIVIDE 9000 17.1 16.7 102 17.6 17.8 99
THUMB DIVIDE 7980 10.9 11.2 97 12.7 12.3 103
TOGWOTEE PASS 9580 18.9 16.3 116 20.7 16.3 127
TWO OCEAN PLATEAU 9240 24.1 18.3 132 18.4 17.9 103
WILLOW CREEK 8380 21.7 19.5 111 25.9 21.1 123
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Basin wide percent of average 101 104
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 15.0 15.8 95 13.7 13.5 101
BLACK BEAR 8170 20.6 24.8 83 22.0 25.1 88
CANYON 7870 8.4 8.6 98 9.3 10.5 89
FISHER CREEK 9100 23.6 23.0 103 21.7 23.8 91
MADISON PLATEAU 7750 12.0 15.7 76 14.0 16.9 83
NORTHEAST ENTRANCE 7350 7.0 7.4 95 9.2 8.6 107
PARKER PEAK 9400 16.7 14.3 117 12.1 10.7 113
SYLVAN LAKE 8420 12.4 14.5 86 14.8 14.3 103
THUMB DIVIDE 7980 10.9 11.2 97 12.7 12.3 103
TWO OCEAN PLATEAU 9240 24.1 18.3 132 18.4 17.9 103
WHISKEY CREEK 6800 8.6 10.8 80 11.6 13.4 87
WHITE MILL 8700 15.6 15.6 100 15.2 17.6 86
WOLVERINE 7650 8.1 8.4 96 8.0 8.9 90
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Basin wide percent of average 97 94
WIND RIVER
BURROUGHS CREEK 8750 11.8 9.8 120 12.1 10.9 111
COLD SPRINGS 9630 4.9 5.9 83 6.6 6.9 96
DEER PARK 9700 6.4 11.6 55 10.1 14.1 72
HOBBS PARK 10100 6.9 9.6 72 7.2 8.0 90
LITTLE WARM 9370 7.4 7.6 97 9.3 8.9 104
SOUTH PASS 9040 7.1 11.0 65 9.1 11.8 77
ST. LAWRENCE ALT 8620 1.9 4.7 40 4.8 5.5 87
TOGWOTEE PASS 9580 18.9 16.3 116 20.7 16.3 127
TOWNSEND CREEK 8700 4.2 5.5 76 6.4 7.1 90
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Basin wide percent of average 85 96
BIGHORN BASIN
BALD MTN. 9380 13.5 13.0 104 11.2 11.4 98
BEAR TRAP MEADOW 8200 5.9 3.4 174 6.6 5.4 122
BLACKWATER 9780 16.0 16.1 99 14.6 13.8 106
BONE SPRINGS DIV 9350 13.5 10.3 131 10.5 9.3 113
EVENING STAR 9200 19.8 19.2 103 20.4 17.1 119
GRAVE SPRINGS 8550 5.0 5.5 91 6.4 6.3 102
KIRWIN 9550 8.6 7.5 115 9.8 7.4 132
MARQUETTE 8760 2.9 5.8 50 5.6 6.1 92
MIDDLE POWDER 7760 6.2 6.9 90 6.5 8.1 80
OWL CREEK 8975 3.8 3.3 115 3.7 3.6 103
POWDER RIVER PASS 9480 9.1 7.0 130 10.2 8.0 127
SHELL CREEK 9580 12.2 9.6 127 11.9 9.0 132
SYLVAN LAKE 8420 12.4 14.5 86 14.8 14.3 103
SYLVAN ROAD 7120 10.1 8.5 119 13.1 12.9 102
TIMBER CREEK 7950 2.9 3.5 83 6.0 4.4 136
YOUNTS PEAK 8350 13.5 11.6 116 11.7 11.1 105
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Basin wide percent of average 107 110
SHOSHONE RIVER
BLACKWATER 9780 16.0 16.1 99 14.6 13.8 106
EVENING STAR 9200 19.8 19.2 103 20.4 17.1 119
KIRWIN 9550 8.6 7.5 115 9.8 7.4 132
MARQUETTE 8760 2.9 5.8 50 5.6 6.1 92
SYLVAN LAKE 8420 12.4 14.5 86 14.8 14.3 103
SYLVAN ROAD 7120 10.1 8.5 119 13.1 12.9 102
YOUNTS PEAK 8350 13.5 11.6 116 11.7 11.1 105
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Basin wide percent of average 100 109
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.9 3.4 174 6.6 5.4 122
BIG GOOSE 7990 5.6 5.8 97 7.8 5.4 144
BONE SPRINGS DIV 9350 13.5 10.3 131 10.5 9.3 113
BURGESS JUNCTION 7880 8.3 7.1 117 9.1 7.7 118
CLOUD PEAK RESERVOIR 9860 11.6 7.8 149 11.3 8.0 141
DOME LAKE 8880 8.3 7.7 108 10.4 8.5 122
GRAVE SPRINGS 8550 5.0 5.5 91 6.4 6.3 102
HANSEN SAWMILL 8360 4.3 4.1 105 7.1 5.2 137
MIDDLE POWDER 7760 6.2 6.9 90 6.5 8.1 80
POWDER RIVER PASS 9480 9.1 7.0 130 10.2 8.0 127
SUCKER CREEK 8880 10.0 6.9 145 11.8 8.5 139
TIE CREEK 6870 3.3 3.9 85 9.6 6.6 145
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Basin wide percent of average 119 123
BELLE FOURCHE
BLIND PARK 6890 6.9 5.1 135 11.1 7.6 146
COLE CANYON 5910 4.3 4.4 98 9.1 4.6 198
NORTH RAPID CREEK 6130 6.6 4.8 138 9.6 6.2 155
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Basin wide percent of average 124 162
UPPER N. PLATTE RIVER
COLUMBINE 9160 16.9 15.6 108 16.1 16.1 100
DIVIDE PEAK 8880 13.5 12.6 107 15.5 13.3 117
ELK RIVER 8700 15.4 11.6 133 14.6 12.3 119
JOE WRIGHT 10120 15.7 13.4 117 19.0 15.7 121
NORTH FRENCH CREEK 10130 20.3 17.8 114 19.7 15.9 124
OLD BATTLE 10000 19.7 19.3 102 23.6 21.7 109
SAGE CREEK BASIN 7850 7.2 7.3 99 8.6 7.7 112
SOUTH BRUSH CREEK 8440 9.3 7.1 131 10.6 10.5 101
TOWER 10500 26.5 28.9 92 26.9 24.5 110
WEBBER SPRINGS 9250 15.1 15.4 98 18.0 17.5 103
WILLOW CREEK PASS 9540 7.9 7.3 108 8.1 8.1 100
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Basin wide percent of average 107 111
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 13.6 14.8 92 12.9 13.8 93
CASPER MTN. 7900 5.7 8.8 65 8.3 8.7 95
DEADMAN HILL 10220 10.6 10.2 104 11.3 10.3 110
DEER PARK 9700 6.4 11.6 55 10.1 14.1 72
LAPRELE CREEK 8375 5.0 7.0 71 6.0 7.9 76
RENO HILL 8400 7.0 8.2 85 8.0 9.1 88
ROACH 9700 10.9 10.5 104 12.2 11.3 108
SAND LAKE 10050 17.0 19.3 88 15.5 15.4 101
SOUTH PASS 9040 7.1 11.0 65 9.1 11.8 77
WINDY PEAK 7900 5.0 4.4 114 5.7 6.8 84
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Basin wide percent of average 83 91
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 9.1 7.4 123 11.3 9.6 118
DIVIDE PEAK 8880 13.5 12.6 107 15.5 13.3 117
OLD BATTLE 10000 19.7 19.3 102 23.6 21.7 109
SANDSTONE RS 8150 9.8 9.2 107 12.6 12.1 104
WHISKEY PARK 8950 19.1 17.7 108 20.5 18.8 109
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Basin wide percent of average 108 111
UPPER GREEN RIVER
BIG SANDY OPENING 9080 7.8 9.2 85 7.9 8.7 91
BLIND BULL SUM 8650 16.6 17.8 93 14.0 14.9 94
EAST RIM DIVIDE 7930 6.3 8.1 78 9.0 7.8 115
ELKHART PARK G.S. 9400 8.9 8.5 105 10.1 8.6 117
GROS VENTRE SUMMIT 8750 8.6 9.2 93 10.0 8.4 119
GUNSIGHT PASS 9820 9.4 -M * 10.5 -M *
KENDALL R.S. 7740 7.8 9.5 82 10.2 9.4 109
LOOMIS PARK 8240 11.5 10.8 106 13.9 11.4 122
NEW FORK LAKE 8340 8.5 7.4 115 8.1 7.6 107
SNIDER BASIN 8060 9.3 9.4 99 10.0 10.7 93
SPRING CREEK DIVIDE 9000 17.1 16.7 102 17.6 17.8 99
TRIPLE PEAK 8500 16.5 16.1 102 18.2 15.6 117
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Basin wide percent of average 97 107
LOWER GREEN RIVER
HAMS FORK 7840 6.3 8.0 79 7.2 8.1 89
HEWINTA 9519 4.9 6.3 78 7.8 9.0 87
HICKERSON PARK 9145 1.8 4.2 43 4.4 5.1 86
HOLE-IN-ROCK 9150 2.2 3.9 56 4.3 4.7 91
INDIAN CREEK 9425 13.9 17.0 82 13.4 16.3 82
KELLEY R.S. 8180 9.1 10.2 89 10.5 13.5 78
STEEL CREEK PARK 10200 6.2 9.0 69 9.5 9.8 97
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Basin wide percent of average 76 86
UPPER BEAR RIVER
BUG LAKE 7950 8.4 12.6 67 10.8 12.5 86
HAYDEN FORK 9212 10.4 9.3 112 13.0 13.2 98
KELLEY R.S. 8180 9.1 10.2 89 10.5 13.5 78
LILY LAKE 9156 8.4 7.8 108 10.2 11.1 92
MONTE CRISTO 8960 15.3 17.3 88 15.9 16.2 98
SALT RIVER SUMMIT 7760 8.3 8.8 94 9.8 12.2 80
TRIAL LAKE 9992 14.1 15.0 94 13.8 15.3 90
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Basin wide percent of average 91 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.