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 SUNDAY: JANUARY 11 , 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 9.6 9.7 99 12.3 11.9 103
COTTONWOOD CREEK 7670 14.7 11.2 131 18.0 15.5 116
GRAND TARGHEE 9260 21.7 -M * 19.4 -M *
GRANITE CREEK 6770 -M 9.2 * -M 11.0 *
GRASSY LAKE 7265 17.0 17.4 98 20.4 20.1 101
GROS VENTRE SUMMIT 8750 8.4 7.8 108 9.3 7.1 131
GUNSIGHT PASS 9820 8.2 -M * 9.2 -M *
LEWIS LAKE DIVIDE 7850 15.5 17.4 89 19.8 20.1 99
PHILLIPS BENCH 8200 15.5 14.6 106 17.8 15.6 114
SALT RIVER SUMMIT 7760 7.0 6.6 106 8.7 10.3 84
SNAKE RIVER STATION 6920 9.1 9.3 98 13.3 12.6 106
SPRING CREEK DIVIDE 9000 14.7 14.1 104 15.6 15.0 104
THUMB DIVIDE 7980 10.1 8.9 113 11.9 10.4 114
TOGWOTEE PASS 9580 17.3 13.4 129 18.8 13.7 137
TWO OCEAN PLATEAU 9240 21.9 15.2 144 16.8 15.2 111
WILLOW CREEK 8380 17.9 16.3 110 22.3 17.8 125
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Basin wide percent of average 110 111
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 13.7 13.3 103 12.5 11.4 110
BLACK BEAR 8170 18.3 20.1 91 20.1 20.5 98
CANYON 7870 7.2 7.2 100 8.1 8.8 92
FISHER CREEK 9100 22.0 19.0 116 20.8 19.7 106
MADISON PLATEAU 7750 10.8 13.0 83 12.8 14.0 91
NORTHEAST ENTRANCE 7350 6.0 6.0 100 8.5 7.2 118
PARKER PEAK 9400 15.2 12.1 126 -M 9.1 *
SYLVAN LAKE 8420 10.9 12.2 89 13.3 12.2 109
THUMB DIVIDE 7980 10.1 8.9 113 11.9 10.4 114
TWO OCEAN PLATEAU 9240 21.9 15.2 144 16.8 15.2 111
WHISKEY CREEK 6800 7.7 8.7 89 10.6 11.3 94
WHITE MILL 8700 14.3 13.0 110 14.4 14.6 99
WOLVERINE 7650 7.1 6.8 104 7.1 7.7 92
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Basin wide percent of average 106 103
WIND RIVER
BURROUGHS CREEK 8750 10.8 8.1 133 11.6 9.2 126
COLD SPRINGS 9630 4.5 5.1 88 6.2 6.2 100
DEER PARK 9700 5.7 8.1 70 9.5 12.1 79
HOBBS PARK 10100 6.6 8.4 79 6.9 7.0 99
LITTLE WARM 9370 6.4 6.2 103 8.4 7.6 111
SOUTH PASS 9040 6.4 9.3 69 8.6 10.1 85
ST. LAWRENCE ALT 8620 1.7 4.1 41 4.7 4.9 96
TOGWOTEE PASS 9580 17.3 13.4 129 18.8 13.7 137
TOWNSEND CREEK 8700 3.8 4.8 79 5.8 6.4 91
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Basin wide percent of average 94 104
BIGHORN BASIN
BALD MTN. 9380 12.4 11.1 112 10.5 9.6 109
BEAR TRAP MEADOW 8200 5.2 2.9 179 6.0 4.8 125
BLACKWATER 9780 14.9 13.6 110 13.6 11.9 114
BONE SPRINGS DIV 9350 12.0 8.8 136 9.5 8.1 117
EVENING STAR 9200 18.3 16.0 114 19.0 14.6 130
GRAVE SPRINGS 8550 3.6 4.7 77 5.1 5.4 94
KIRWIN 9550 8.2 6.6 124 9.2 6.5 142
MARQUETTE 8760 2.6 5.2 50 5.4 5.6 96
MIDDLE POWDER 7760 5.3 6.1 87 5.7 7.3 78
OWL CREEK 8975 3.5 2.9 121 3.4 3.2 106
POWDER RIVER PASS 9480 8.5 6.0 142 9.6 6.7 143
SHELL CREEK 9580 11.4 8.3 137 11.2 7.5 149
SYLVAN LAKE 8420 10.9 12.2 89 13.3 12.2 109
SYLVAN ROAD 7120 8.8 7.2 122 11.7 11.2 104
TIMBER CREEK 7950 2.5 3.2 78 5.6 3.9 144
YOUNTS PEAK 8350 12.7 9.3 137 11.4 9.4 121
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Basin wide percent of average 113 117
SHOSHONE RIVER
BLACKWATER 9780 14.9 13.6 110 13.6 11.9 114
EVENING STAR 9200 18.3 16.0 114 19.0 14.6 130
KIRWIN 9550 8.2 6.6 124 9.2 6.5 142
MARQUETTE 8760 2.6 5.2 50 5.4 5.6 96
SYLVAN LAKE 8420 10.9 12.2 89 13.3 12.2 109
SYLVAN ROAD 7120 8.8 7.2 122 11.7 11.2 104
YOUNTS PEAK 8350 12.7 9.3 137 11.4 9.4 121
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Basin wide percent of average 109 117
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.2 2.9 179 6.0 4.8 125
BIG GOOSE 7990 4.6 5.0 92 6.8 4.8 142
BONE SPRINGS DIV 9350 12.0 8.8 136 9.5 8.1 117
BURGESS JUNCTION 7880 6.8 6.1 111 7.6 6.7 113
CLOUD PEAK RESERVOIR 9860 9.9 6.5 152 9.9 7.0 141
DOME LAKE 8880 7.4 6.7 110 9.2 7.5 123
GRAVE SPRINGS 8550 3.6 4.7 77 5.1 5.4 94
HANSEN SAWMILL 8360 3.8 3.5 109 6.4 4.6 139
MIDDLE POWDER 7760 5.3 6.1 87 5.7 7.3 78
POWDER RIVER PASS 9480 8.5 6.0 142 9.6 6.7 143
SUCKER CREEK 8880 8.4 5.8 145 10.2 7.4 138
TIE CREEK 6870 2.3 3.2 72 8.4 5.7 147
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Basin wide percent of average 119 124
BELLE FOURCHE
BLIND PARK 6890 5.6 4.2 133 9.9 6.8 146
COLE CANYON 5910 3.8 3.6 106 8.3 4.2 198
NORTH RAPID CREEK 6130 6.0 3.8 158 8.9 5.6 159
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Basin wide percent of average 133 163
UPPER N. PLATTE RIVER
COLUMBINE 9160 11.3 12.0 94 11.2 13.3 84
DIVIDE PEAK 8880 9.7 10.5 92 11.9 11.3 105
ELK RIVER 8700 11.2 8.8 127 11.5 10.2 113
JOE WRIGHT 10120 12.3 11.0 112 15.4 13.4 115
NORTH FRENCH CREEK 10130 15.0 15.1 99 14.7 13.5 109
OLD BATTLE 10000 14.9 16.3 91 18.7 18.2 103
SAGE CREEK BASIN 7850 4.7 6.1 77 6.6 6.6 100
SOUTH BRUSH CREEK 8440 7.0 5.9 119 8.7 8.8 99
TOWER 10500 -M 23.6 * -M 20.4 *
WEBBER SPRINGS 9250 11.6 12.9 90 14.4 14.8 97
WILLOW CREEK PASS 9540 6.4 6.2 103 7.0 7.0 100
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Basin wide percent of average 99 103
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 10.3 12.3 84 9.9 11.6 85
CASPER MTN. 7900 4.1 7.6 54 6.9 7.8 88
DEADMAN HILL 10220 8.0 8.6 93 8.6 8.8 98
DEER PARK 9700 5.7 8.1 70 9.5 12.1 79
LAPRELE CREEK 8375 -M 6.0 * -M 6.9 *
RENO HILL 8400 4.9 7.2 68 6.2 7.9 78
ROACH 9700 8.1 8.5 95 9.5 9.6 99
SAND LAKE 10050 13.2 16.6 80 12.1 13.1 92
SOUTH PASS 9040 6.4 9.3 69 8.6 10.1 85
WINDY PEAK 7900 2.6 3.8 68 3.5 6.1 57
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Basin wide percent of average 77 86
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.9 5.3 111 8.7 8.1 107
DIVIDE PEAK 8880 9.7 10.5 92 11.9 11.3 105
OLD BATTLE 10000 14.9 16.3 91 18.7 18.2 103
SANDSTONE RS 8150 7.3 6.7 109 9.8 10.2 96
WHISKEY PARK 8950 13.8 13.4 103 16.0 15.4 104
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Basin wide percent of average 99 103
UPPER GREEN RIVER
BIG SANDY OPENING 9080 6.9 7.7 90 7.1 7.4 96
BLIND BULL SUM 8650 14.4 15.0 96 12.4 12.6 98
EAST RIM DIVIDE 7930 5.0 6.7 75 8.0 6.6 121
ELKHART PARK G.S. 9400 7.8 7.1 110 9.2 7.5 123
GROS VENTRE SUMMIT 8750 8.4 7.8 108 9.3 7.1 131
GUNSIGHT PASS 9820 8.2 -M * 9.2 -M *
KENDALL R.S. 7740 6.9 7.7 90 9.2 7.9 116
LOOMIS PARK 8240 10.0 9.1 110 12.3 9.6 128
NEW FORK LAKE 8340 7.4 6.1 121 7.2 6.6 109
SNIDER BASIN 8060 8.2 7.8 105 9.2 9.1 101
SPRING CREEK DIVIDE 9000 14.7 14.1 104 15.6 15.0 104
TRIPLE PEAK 8500 14.7 13.5 109 16.4 13.0 126
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Basin wide percent of average 102 113
LOWER GREEN RIVER
HAMS FORK 7840 4.8 6.4 75 6.0 6.7 90
HEWINTA 9519 3.6 4.9 73 6.6 7.7 86
HICKERSON PARK 9145 1.5 3.4 44 4.1 4.5 91
HOLE-IN-ROCK 9150 1.9 3.1 61 4.0 4.1 98
INDIAN CREEK 9425 11.8 14.2 83 11.6 13.9 83
KELLEY R.S. 8180 7.2 8.6 84 8.9 11.5 77
STEEL CREEK PARK 10200 4.9 7.5 65 8.2 8.4 98
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Basin wide percent of average 74 87
UPPER BEAR RIVER
BUG LAKE 7950 6.3 9.9 64 9.1 10.4 87
HAYDEN FORK 9212 8.4 7.4 114 11.1 11.2 99
KELLEY R.S. 8180 7.2 8.6 84 8.9 11.5 77
LILY LAKE 9156 6.7 6.3 106 8.5 9.6 89
MONTE CRISTO 8960 12.3 13.3 92 13.5 13.7 99
SALT RIVER SUMMIT 7760 7.0 6.6 106 8.7 10.3 84
TRIAL LAKE 9992 11.0 12.1 91 11.0 12.8 86
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Basin wide percent of average 92 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.