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 FRIDAY: JANUARY 30 , 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 10.9 12.4 88 13.8 14.6 95
COTTONWOOD CREEK 7670 17.7 14.0 126 21.3 18.4 116
GRAND TARGHEE 9260 26.7 -M * 23.4 -M *
GRANITE CREEK 6770 11.4 12.1 94 16.0 13.5 119
GRASSY LAKE 7265 20.2 22.5 90 23.4 24.6 95
GROS VENTRE SUMMIT 8750 8.8 9.3 95 10.2 8.5 120
GUNSIGHT PASS 9820 9.7 -M * 10.7 -M *
LEWIS LAKE DIVIDE 7850 17.1 22.6 76 21.5 24.5 88
PHILLIPS BENCH 8200 17.8 18.2 98 19.9 19.2 104
SALT RIVER SUMMIT 7760 8.8 9.0 98 10.4 12.4 84
SNAKE RIVER STATION 6920 11.0 12.3 89 15.1 15.3 99
SPRING CREEK DIVIDE 9000 17.6 17.1 103 18.0 18.0 100
THUMB DIVIDE 7980 11.0 11.5 96 12.8 12.5 102
TOGWOTEE PASS 9580 19.3 16.6 116 21.2 16.6 128
TWO OCEAN PLATEAU 9240 24.3 18.6 131 18.6 18.2 102
WILLOW CREEK 8380 22.1 19.9 111 26.4 21.5 123
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Basin wide percent of average 101 105
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 15.4 16.0 96 14.1 13.8 102
BLACK BEAR 8170 21.0 25.2 83 22.3 25.6 87
CANYON 7870 8.5 8.8 97 9.4 10.6 89
FISHER CREEK 9100 24.3 23.4 104 22.8 24.2 94
MADISON PLATEAU 7750 12.2 15.9 77 14.2 17.2 83
NORTHEAST ENTRANCE 7350 7.2 7.5 96 9.5 8.8 108
PARKER PEAK 9400 17.1 14.5 118 12.4 10.9 114
SYLVAN LAKE 8420 12.7 14.8 86 15.0 14.6 103
THUMB DIVIDE 7980 11.0 11.5 96 12.8 12.5 102
TWO OCEAN PLATEAU 9240 24.3 18.6 131 18.6 18.2 102
WHISKEY CREEK 6800 8.8 10.9 81 11.9 13.6 88
WHITE MILL 8700 16.0 15.8 101 15.8 18.0 88
WOLVERINE 7650 8.3 8.6 97 8.5 9.1 93
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Basin wide percent of average 98 95
WIND RIVER
BURROUGHS CREEK 8750 11.9 10.0 119 12.3 11.1 111
COLD SPRINGS 9630 5.0 5.9 85 6.7 7.0 96
DEER PARK 9700 6.5 11.6 56 10.1 14.3 71
HOBBS PARK 10100 6.9 9.7 71 7.2 8.1 89
LITTLE WARM 9370 7.6 7.7 99 9.6 9.0 107
SOUTH PASS 9040 7.1 11.2 63 9.1 12.0 76
ST. LAWRENCE ALT 8620 2.1 4.7 45 4.9 5.6 88
TOGWOTEE PASS 9580 19.3 16.6 116 21.2 16.6 128
TOWNSEND CREEK 8700 4.1 5.5 75 6.4 7.2 89
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Basin wide percent of average 85 96
BIGHORN BASIN
BALD MTN. 9380 13.9 13.2 105 11.5 11.6 99
BEAR TRAP MEADOW 8200 6.0 3.5 171 6.7 5.4 124
BLACKWATER 9780 16.3 16.3 100 14.9 14.0 106
BONE SPRINGS DIV 9350 14.2 10.5 135 11.0 9.5 116
EVENING STAR 9200 20.1 19.4 104 20.9 17.3 121
GRAVE SPRINGS 8550 5.3 5.6 95 6.6 6.3 105
KIRWIN 9550 8.7 7.6 114 9.9 7.5 132
MARQUETTE 8760 3.0 5.9 51 5.8 6.1 95
MIDDLE POWDER 7760 6.6 7.1 93 6.6 8.2 80
OWL CREEK 8975 3.7 3.4 109 3.7 3.6 103
POWDER RIVER PASS 9480 9.4 7.1 132 10.5 8.2 128
SHELL CREEK 9580 12.5 9.8 128 12.2 9.1 134
SYLVAN LAKE 8420 12.7 14.8 86 15.0 14.6 103
SYLVAN ROAD 7120 10.2 8.6 119 13.2 13.1 101
TIMBER CREEK 7950 2.9 3.6 81 5.9 4.4 134
YOUNTS PEAK 8350 13.7 11.8 116 12.4 11.2 111
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Basin wide percent of average 107 111
SHOSHONE RIVER
BLACKWATER 9780 16.3 16.3 100 14.9 14.0 106
EVENING STAR 9200 20.1 19.4 104 20.9 17.3 121
KIRWIN 9550 8.7 7.6 114 9.9 7.5 132
MARQUETTE 8760 3.0 5.9 51 5.8 6.1 95
SYLVAN LAKE 8420 12.7 14.8 86 15.0 14.6 103
SYLVAN ROAD 7120 10.2 8.6 119 13.2 13.1 101
YOUNTS PEAK 8350 13.7 11.8 116 12.4 11.2 111
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Basin wide percent of average 100 110
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.0 3.5 171 6.7 5.4 124
BIG GOOSE 7990 5.9 5.9 100 8.1 5.5 147
BONE SPRINGS DIV 9350 14.2 10.5 135 11.0 9.5 116
BURGESS JUNCTION 7880 8.7 7.3 119 9.4 7.8 121
CLOUD PEAK RESERVOIR 9860 12.1 7.9 153 11.6 8.1 143
DOME LAKE 8880 8.6 7.8 110 10.7 8.6 124
GRAVE SPRINGS 8550 5.3 5.6 95 6.6 6.3 105
HANSEN SAWMILL 8360 4.5 4.2 107 7.3 5.2 140
MIDDLE POWDER 7760 6.6 7.1 93 6.6 8.2 80
POWDER RIVER PASS 9480 9.4 7.1 132 10.5 8.2 128
SUCKER CREEK 8880 10.4 7.1 146 12.2 8.7 140
TIE CREEK 6870 3.7 3.9 95 10.1 6.7 151
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Basin wide percent of average 122 126
BELLE FOURCHE
BLIND PARK 6890 7.4 5.2 142 11.5 7.7 149
COLE CANYON 5910 4.6 4.4 105 9.1 4.6 198
NORTH RAPID CREEK 6130 6.9 4.9 141 10.0 6.2 161
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Basin wide percent of average 130 165
UPPER N. PLATTE RIVER
COLUMBINE 9160 18.2 16.0 114 17.3 16.4 105
DIVIDE PEAK 8880 14.2 12.8 111 16.1 13.5 119
ELK RIVER 8700 16.1 11.9 135 14.8 12.5 118
JOE WRIGHT 10120 16.1 13.6 118 19.6 15.9 123
NORTH FRENCH CREEK 10130 21.3 18.1 118 20.5 16.1 127
OLD BATTLE 10000 20.6 19.7 105 24.9 22.0 113
SAGE CREEK BASIN 7850 7.5 7.4 101 8.8 7.8 113
SOUTH BRUSH CREEK 8440 9.5 7.3 130 11.1 10.7 104
TOWER 10500 28.3 29.5 96 28.2 25.0 113
WEBBER SPRINGS 9250 15.9 15.8 101 18.8 17.8 106
WILLOW CREEK PASS 9540 8.4 7.4 114 8.2 8.2 100
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Basin wide percent of average 110 114
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.2 15.1 94 13.4 14.0 96
CASPER MTN. 7900 5.8 8.9 65 8.4 8.8 95
DEADMAN HILL 10220 11.0 10.4 106 11.6 10.4 112
DEER PARK 9700 6.5 11.6 56 10.1 14.3 71
LAPRELE CREEK 8375 5.2 7.1 73 6.2 8.0 78
RENO HILL 8400 7.1 8.3 86 8.2 9.2 89
ROACH 9700 11.2 10.8 104 12.8 11.5 111
SAND LAKE 10050 17.8 19.6 91 16.4 15.7 104
SOUTH PASS 9040 7.1 11.2 63 9.1 12.0 76
WINDY PEAK 7900 5.0 4.4 114 5.7 6.9 83
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Basin wide percent of average 85 92
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 9.6 7.6 126 11.8 9.7 122
DIVIDE PEAK 8880 14.2 12.8 111 16.1 13.5 119
OLD BATTLE 10000 20.6 19.7 105 24.9 22.0 113
SANDSTONE RS 8150 10.5 9.4 112 13.3 12.3 108
WHISKEY PARK 8950 20.8 18.1 115 22.4 19.1 117
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Basin wide percent of average 112 116
UPPER GREEN RIVER
BIG SANDY OPENING 9080 7.9 9.4 84 8.0 8.9 90
BLIND BULL SUM 8650 16.9 18.1 93 14.2 15.2 93
EAST RIM DIVIDE 7930 6.6 8.3 80 9.2 8.0 115
ELKHART PARK G.S. 9400 9.2 8.6 107 10.3 8.8 117
GROS VENTRE SUMMIT 8750 8.8 9.3 95 10.2 8.5 120
GUNSIGHT PASS 9820 9.7 -M * 10.7 -M *
KENDALL R.S. 7740 8.0 9.6 83 10.3 9.6 107
LOOMIS PARK 8240 11.7 11.0 106 14.1 11.6 122
NEW FORK LAKE 8340 8.7 7.5 116 8.4 7.8 108
SNIDER BASIN 8060 9.6 9.6 100 10.3 10.9 94
SPRING CREEK DIVIDE 9000 17.6 17.1 103 18.0 18.0 100
TRIPLE PEAK 8500 16.9 16.4 103 18.7 15.9 118
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Basin wide percent of average 98 107
LOWER GREEN RIVER
HAMS FORK 7840 6.7 8.2 82 7.5 8.2 91
HEWINTA 9519 5.1 6.5 78 7.9 9.2 86
HICKERSON PARK 9145 1.9 4.3 44 4.4 5.1 86
HOLE-IN-ROCK 9150 2.3 4.0 57 4.4 4.7 94
INDIAN CREEK 9425 14.4 17.3 83 13.8 16.5 84
KELLEY R.S. 8180 9.5 10.4 91 11.1 13.7 81
STEEL CREEK PARK 10200 6.5 9.2 71 9.8 10.0 98
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Basin wide percent of average 77 87
UPPER BEAR RIVER
BUG LAKE 7950 9.4 12.9 73 11.1 12.7 87
HAYDEN FORK 9212 10.6 9.6 110 13.2 13.4 99
KELLEY R.S. 8180 9.5 10.4 91 11.1 13.7 81
LILY LAKE 9156 8.5 8.0 106 10.3 11.3 91
MONTE CRISTO 8960 16.1 17.7 91 16.2 16.4 99
SALT RIVER SUMMIT 7760 8.8 9.0 98 10.4 12.4 84
TRIAL LAKE 9992 14.5 15.3 95 14.2 15.6 91
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Basin wide percent of average 93 91
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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.