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: JANUARY 27 , 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 10.6 12.0 88 13.5 14.2 95
COTTONWOOD CREEK 7670 17.3 13.6 127 20.7 18.0 115
GRAND TARGHEE 9260 25.9 -M * 22.8 -M *
GRANITE CREEK 6770 11.1 11.6 96 15.6 13.1 119
GRASSY LAKE 7265 19.6 21.7 90 22.7 24.0 95
GROS VENTRE SUMMIT 8750 8.6 9.1 95 9.9 8.3 119
GUNSIGHT PASS 9820 9.4 -M * 10.4 -M *
LEWIS LAKE DIVIDE 7850 16.7 21.8 77 20.7 23.8 87
PHILLIPS BENCH 8200 17.3 17.6 98 19.3 18.7 103
SALT RIVER SUMMIT 7760 8.2 8.6 95 9.7 12.1 80
SNAKE RIVER STATION 6920 10.6 11.8 90 14.8 14.9 99
SPRING CREEK DIVIDE 9000 17.0 16.6 102 17.5 17.6 99
THUMB DIVIDE 7980 10.8 11.1 97 12.6 12.2 103
TOGWOTEE PASS 9580 18.8 16.1 117 20.6 16.2 127
TWO OCEAN PLATEAU 9240 23.8 18.1 131 18.4 17.7 104
WILLOW CREEK 8380 21.5 19.3 111 25.7 20.9 123
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Basin wide percent of average 101 104
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 15.1 15.7 96 13.8 13.4 103
BLACK BEAR 8170 20.2 24.7 82 21.7 24.8 88
CANYON 7870 8.4 8.6 98 9.1 10.4 87
FISHER CREEK 9100 23.5 22.9 103 21.5 23.6 91
MADISON PLATEAU 7750 11.7 15.6 75 13.8 16.7 83
NORTHEAST ENTRANCE 7350 6.7 7.4 91 9.1 8.5 107
PARKER PEAK 9400 16.6 14.3 116 12.4 10.6 117
SYLVAN LAKE 8420 12.3 14.5 85 14.7 14.2 104
THUMB DIVIDE 7980 10.8 11.1 97 12.6 12.2 103
TWO OCEAN PLATEAU 9240 23.8 18.1 131 18.4 17.7 104
WHISKEY CREEK 6800 8.3 10.7 78 11.5 13.2 87
WHITE MILL 8700 15.4 15.5 99 14.9 17.4 86
WOLVERINE 7650 8.2 8.4 98 7.9 8.9 89
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Basin wide percent of average 97 95
WIND RIVER
BURROUGHS CREEK 8750 11.5 9.8 117 12.1 10.9 111
COLD SPRINGS 9630 4.7 5.8 81 6.5 6.9 94
DEER PARK 9700 6.3 11.5 55 10.1 13.9 73
HOBBS PARK 10100 6.7 9.5 71 6.9 7.9 87
LITTLE WARM 9370 7.2 7.5 96 9.2 8.8 105
SOUTH PASS 9040 7.0 10.8 65 9.2 11.7 79
ST. LAWRENCE ALT 8620 1.6 4.6 35 4.8 5.5 87
TOGWOTEE PASS 9580 18.8 16.1 117 20.6 16.2 127
TOWNSEND CREEK 8700 3.7 5.4 69 6.0 7.1 85
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Basin wide percent of average 83 96
BIGHORN BASIN
BALD MTN. 9380 13.5 13.0 104 11.3 11.3 100
BEAR TRAP MEADOW 8200 5.7 3.4 168 6.5 5.3 123
BLACKWATER 9780 15.9 16.0 99 14.4 13.6 106
BONE SPRINGS DIV 9350 13.5 10.2 132 10.3 9.2 112
EVENING STAR 9200 19.6 19.0 103 20.3 17.0 119
GRAVE SPRINGS 8550 4.8 5.4 89 6.5 6.3 103
KIRWIN 9550 8.5 7.5 113 9.5 7.4 128
MARQUETTE 8760 2.7 5.8 47 5.4 6.1 89
MIDDLE POWDER 7760 6.1 6.9 88 6.6 8.1 81
OWL CREEK 8975 3.6 3.3 109 3.4 3.6 94
POWDER RIVER PASS 9480 9.1 7.0 130 10.0 8.0 125
SHELL CREEK 9580 12.1 9.6 126 12.0 8.9 135
SYLVAN LAKE 8420 12.3 14.5 85 14.7 14.2 104
SYLVAN ROAD 7120 10.1 8.5 119 13.0 12.8 102
TIMBER CREEK 7950 -M 3.5 * 6.3 4.4 143
YOUNTS PEAK 8350 13.3 11.5 116 11.9 11.0 108
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Basin wide percent of average 106 110
SHOSHONE RIVER
BLACKWATER 9780 15.9 16.0 99 14.4 13.6 106
EVENING STAR 9200 19.6 19.0 103 20.3 17.0 119
KIRWIN 9550 8.5 7.5 113 9.5 7.4 128
MARQUETTE 8760 2.7 5.8 47 5.4 6.1 89
SYLVAN LAKE 8420 12.3 14.5 85 14.7 14.2 104
SYLVAN ROAD 7120 10.1 8.5 119 13.0 12.8 102
YOUNTS PEAK 8350 13.3 11.5 116 11.9 11.0 108
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Basin wide percent of average 100 109
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.7 3.4 168 6.5 5.3 123
BIG GOOSE 7990 5.3 5.7 93 7.8 5.3 147
BONE SPRINGS DIV 9350 13.5 10.2 132 10.3 9.2 112
BURGESS JUNCTION 7880 -M 7.1 * 8.9 7.6 117
CLOUD PEAK RESERVOIR 9860 11.3 7.7 147 10.5 7.9 133
DOME LAKE 8880 8.0 7.7 104 10.3 8.4 123
GRAVE SPRINGS 8550 4.8 5.4 89 6.5 6.3 103
HANSEN SAWMILL 8360 4.2 4.0 105 6.8 5.1 133
MIDDLE POWDER 7760 6.1 6.9 88 6.6 8.1 81
POWDER RIVER PASS 9480 9.1 7.0 130 10.0 8.0 125
SUCKER CREEK 8880 9.8 6.9 142 11.5 8.5 135
TIE CREEK 6870 3.1 3.8 82 9.1 6.6 138
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Basin wide percent of average 118 121
BELLE FOURCHE
BLIND PARK 6890 6.5 5.1 127 11.3 7.6 149
COLE CANYON 5910 4.0 4.3 93 9.2 4.6 200
NORTH RAPID CREEK 6130 6.4 4.7 136 9.5 6.1 156
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Basin wide percent of average 120 164
UPPER N. PLATTE RIVER
COLUMBINE 9160 16.9 15.4 110 16.1 15.9 101
DIVIDE PEAK 8880 13.5 12.5 108 15.2 13.2 115
ELK RIVER 8700 15.3 11.4 134 14.4 12.2 118
JOE WRIGHT 10120 15.7 13.2 119 19.1 15.6 122
NORTH FRENCH CREEK 10130 20.2 17.7 114 19.7 15.7 125
OLD BATTLE 10000 19.6 19.1 103 23.7 21.5 110
SAGE CREEK BASIN 7850 7.1 7.3 97 8.6 7.6 113
SOUTH BRUSH CREEK 8440 9.2 7.0 131 10.6 10.4 102
TOWER 10500 26.5 28.6 93 26.9 24.3 111
WEBBER SPRINGS 9250 15.0 15.3 98 18.0 17.4 103
WILLOW CREEK PASS 9540 8.2 7.2 114 8.1 8.0 101
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Basin wide percent of average 108 111
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 13.5 14.7 92 12.8 13.7 93
CASPER MTN. 7900 5.4 8.7 62 8.0 8.6 93
DEADMAN HILL 10220 10.6 10.1 105 11.2 10.2 110
DEER PARK 9700 6.3 11.5 55 10.1 13.9 73
LAPRELE CREEK 8375 4.9 7.0 70 5.9 7.9 75
RENO HILL 8400 6.9 8.2 84 7.8 9.0 87
ROACH 9700 10.8 10.4 104 12.3 11.2 110
SAND LAKE 10050 16.9 19.2 88 15.6 15.3 102
SOUTH PASS 9040 7.0 10.8 65 9.2 11.7 79
WINDY PEAK 7900 4.8 4.3 112 5.6 6.8 82
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Basin wide percent of average 83 91
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 8.9 7.3 122 11.2 9.5 118
DIVIDE PEAK 8880 13.5 12.5 108 15.2 13.2 115
OLD BATTLE 10000 19.6 19.1 103 23.7 21.5 110
SANDSTONE RS 8150 9.8 9.1 108 12.5 12.0 104
WHISKEY PARK 8950 19.0 17.4 109 20.6 18.6 111
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Basin wide percent of average 108 111
UPPER GREEN RIVER
BIG SANDY OPENING 9080 7.6 9.1 84 7.6 8.6 88
BLIND BULL SUM 8650 16.4 17.6 93 13.9 14.8 94
EAST RIM DIVIDE 7930 6.0 8.1 74 8.9 7.8 114
ELKHART PARK G.S. 9400 8.8 8.4 105 10.0 8.6 116
GROS VENTRE SUMMIT 8750 8.6 9.1 95 9.9 8.3 119
GUNSIGHT PASS 9820 9.4 -M * 10.4 -M *
KENDALL R.S. 7740 7.7 9.4 82 10.1 9.3 109
LOOMIS PARK 8240 11.8 10.7 110 13.7 11.3 121
NEW FORK LAKE 8340 8.3 7.3 114 7.9 7.6 104
SNIDER BASIN 8060 9.2 9.3 99 9.9 10.7 93
SPRING CREEK DIVIDE 9000 17.0 16.6 102 17.5 17.6 99
TRIPLE PEAK 8500 16.3 15.9 103 18.0 15.5 116
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Basin wide percent of average 97 106
LOWER GREEN RIVER
HAMS FORK 7840 6.2 7.9 78 7.1 8.0 89
HEWINTA 9519 4.7 6.3 75 7.6 8.9 85
HICKERSON PARK 9145 1.5 4.2 36 4.1 5.0 82
HOLE-IN-ROCK 9150 2.0 3.9 51 4.2 4.6 91
INDIAN CREEK 9425 13.7 16.8 82 13.3 16.2 82
KELLEY R.S. 8180 8.9 10.1 88 10.4 13.4 78
STEEL CREEK PARK 10200 6.0 8.9 67 9.4 9.7 97
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Basin wide percent of average 74 85
UPPER BEAR RIVER
BUG LAKE 7950 8.1 12.4 65 10.7 12.4 86
HAYDEN FORK 9212 10.3 9.2 112 12.9 13.1 98
KELLEY R.S. 8180 8.9 10.1 88 10.4 13.4 78
LILY LAKE 9156 8.3 7.7 108 10.2 11.0 93
MONTE CRISTO 8960 15.4 17.0 91 15.9 16.0 99
SALT RIVER SUMMIT 7760 8.2 8.6 95 9.7 12.1 80
TRIAL LAKE 9992 14.0 14.8 95 13.7 15.2 90
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Basin wide percent of average 92 90
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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.