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 MONDAY: FEBRUARY 9 , 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 11.3 13.7 82 13.9 15.9 87
COTTONWOOD CREEK 7670 18.0 15.3 118 21.5 19.8 109
GRAND TARGHEE 9260 27.4 -M * 23.9 -M *
GRANITE CREEK 6770 11.7 13.4 87 16.2 14.8 109
GRASSY LAKE 7265 21.4 24.9 86 24.8 26.7 93
GROS VENTRE SUMMIT 8750 8.9 10.0 89 10.5 9.2 114
GUNSIGHT PASS 9820 10.3 -M * 11.3 -M *
LEWIS LAKE DIVIDE 7850 18.2 25.0 73 22.3 26.6 84
PHILLIPS BENCH 8200 18.1 20.0 90 20.4 20.9 98
SALT RIVER SUMMIT 7760 9.1 10.1 90 10.7 13.5 79
SNAKE RIVER STATION 6920 11.6 13.8 84 15.6 16.7 93
SPRING CREEK DIVIDE 9000 18.0 18.7 96 18.6 19.4 96
THUMB DIVIDE 7980 11.3 12.7 89 13.1 13.6 96
TOGWOTEE PASS 9580 19.7 18.0 109 21.6 17.9 121
TWO OCEAN PLATEAU 9240 24.9 20.2 123 19.2 19.8 97
WILLOW CREEK 8380 22.6 21.7 104 27.2 23.2 117
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Basin wide percent of average 95 99
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 15.9 17.1 93 14.5 14.8 98
BLACK BEAR 8170 22.2 27.2 82 23.4 28.0 84
CANYON 7870 8.7 9.5 92 9.6 11.4 84
FISHER CREEK 9100 25.2 25.1 100 23.8 26.2 91
MADISON PLATEAU 7750 12.9 17.2 75 14.8 18.7 79
NORTHEAST ENTRANCE 7350 7.5 8.2 91 9.8 9.4 104
PARKER PEAK 9400 17.7 15.5 114 12.7 11.8 108
SYLVAN LAKE 8420 13.3 15.9 84 15.4 15.7 98
THUMB DIVIDE 7980 11.3 12.7 89 13.1 13.6 96
TWO OCEAN PLATEAU 9240 24.9 20.2 123 19.2 19.8 97
WHISKEY CREEK 6800 9.3 11.9 78 12.3 14.7 84
WHITE MILL 8700 16.6 17.0 98 16.5 19.5 85
WOLVERINE 7650 8.8 9.1 97 8.8 9.7 91
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Basin wide percent of average 94 91
WIND RIVER
BURROUGHS CREEK 8750 12.3 10.6 116 12.9 11.9 108
COLD SPRINGS 9630 5.0 6.2 81 6.7 7.4 91
DEER PARK 9700 6.6 12.3 54 10.3 15.6 66
HOBBS PARK 10100 7.1 10.2 70 7.3 8.6 85
LITTLE WARM 9370 7.7 8.1 95 9.8 9.6 102
SOUTH PASS 9040 7.3 11.9 61 9.2 13.1 70
ST. LAWRENCE ALT 8620 2.0 5.0 40 4.9 6.1 80
TOGWOTEE PASS 9580 19.7 18.0 109 21.6 17.9 121
TOWNSEND CREEK 8700 4.4 5.9 75 6.6 7.7 86
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Basin wide percent of average 82 91
BIGHORN BASIN
BALD MTN. 9380 14.3 14.0 102 11.8 12.4 95
BEAR TRAP MEADOW 8200 6.2 3.7 168 6.7 5.8 116
BLACKWATER 9780 16.4 17.4 94 15.1 15.0 101
BONE SPRINGS DIV 9350 14.5 11.1 131 11.4 10.1 113
EVENING STAR 9200 20.8 21.0 99 21.6 18.7 116
GRAVE SPRINGS 8550 5.4 6.1 89 6.5 6.7 97
KIRWIN 9550 8.8 8.0 110 9.9 8.0 124
MARQUETTE 8760 2.9 6.1 48 5.7 6.5 88
MIDDLE POWDER 7760 6.6 7.7 86 6.6 8.6 77
OWL CREEK 8975 3.8 3.5 109 3.7 3.9 95
POWDER RIVER PASS 9480 9.4 7.5 125 10.7 8.8 122
SHELL CREEK 9580 13.0 10.3 126 12.5 9.8 128
SYLVAN LAKE 8420 13.3 15.9 84 15.4 15.7 98
SYLVAN ROAD 7120 10.4 9.5 109 13.5 14.0 96
TIMBER CREEK 7950 2.9 3.7 78 5.9 4.7 126
YOUNTS PEAK 8350 14.1 12.6 112 12.9 12.0 108
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Basin wide percent of average 103 106
SHOSHONE RIVER
BLACKWATER 9780 16.4 17.4 94 15.1 15.0 101
EVENING STAR 9200 20.8 21.0 99 21.6 18.7 116
KIRWIN 9550 8.8 8.0 110 9.9 8.0 124
MARQUETTE 8760 2.9 6.1 48 5.7 6.5 88
SYLVAN LAKE 8420 13.3 15.9 84 15.4 15.7 98
SYLVAN ROAD 7120 10.4 9.5 109 13.5 14.0 96
YOUNTS PEAK 8350 14.1 12.6 112 12.9 12.0 108
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Basin wide percent of average 96 105
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.2 3.7 168 6.7 5.8 116
BIG GOOSE 7990 6.1 6.4 95 8.2 6.0 137
BONE SPRINGS DIV 9350 14.5 11.1 131 11.4 10.1 113
BURGESS JUNCTION 7880 8.9 7.7 116 9.6 8.3 116
CLOUD PEAK RESERVOIR 9860 12.5 8.5 147 12.1 8.6 141
DOME LAKE 8880 8.9 8.4 106 10.9 9.1 120
GRAVE SPRINGS 8550 5.4 6.1 89 6.5 6.7 97
HANSEN SAWMILL 8360 4.4 4.4 100 7.3 5.6 130
MIDDLE POWDER 7760 6.6 7.7 86 6.6 8.6 77
POWDER RIVER PASS 9480 9.4 7.5 125 10.7 8.8 122
SUCKER CREEK 8880 10.5 7.7 136 12.5 9.2 136
TIE CREEK 6870 3.7 4.2 88 10.1 7.1 142
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Basin wide percent of average 116 120
BELLE FOURCHE
BLIND PARK 6890 7.5 5.7 132 11.9 8.2 145
COLE CANYON 5910 4.6 4.8 96 9.2 4.9 188
NORTH RAPID CREEK 6130 7.2 5.5 131 10.2 6.6 155
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Basin wide percent of average 121 159
UPPER N. PLATTE RIVER
COLUMBINE 9160 18.8 18.1 104 18.0 17.8 101
DIVIDE PEAK 8880 15.0 13.7 109 16.9 14.6 116
ELK RIVER 8700 16.9 13.4 126 16.0 13.6 118
JOE WRIGHT 10120 16.4 14.9 110 19.9 17.2 116
NORTH FRENCH CREEK 10130 22.1 19.5 113 21.0 17.4 121
OLD BATTLE 10000 22.0 21.7 101 26.2 24.0 109
SAGE CREEK BASIN 7850 8.0 7.9 101 9.2 8.4 110
SOUTH BRUSH CREEK 8440 9.8 8.0 123 11.5 11.6 99
TOWER 10500 29.8 32.3 92 29.2 27.2 107
WEBBER SPRINGS 9250 16.4 17.4 94 19.4 19.1 102
WILLOW CREEK PASS 9540 9.0 8.1 111 8.3 8.9 93
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Basin wide percent of average 105 109
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.7 16.4 90 13.9 15.1 92
CASPER MTN. 7900 6.1 9.6 64 8.5 9.5 89
DEADMAN HILL 10220 11.4 11.2 102 11.8 11.3 104
DEER PARK 9700 6.6 12.3 54 10.3 15.6 66
LAPRELE CREEK 8375 5.4 7.7 70 6.4 8.6 74
RENO HILL 8400 7.2 8.9 81 8.4 9.9 85
ROACH 9700 11.6 11.9 97 13.3 12.4 107
SAND LAKE 10050 18.8 21.2 89 17.3 16.8 103
SOUTH PASS 9040 7.3 11.9 61 9.2 13.1 70
WINDY PEAK 7900 5.1 5.0 102 5.9 7.3 81
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Basin wide percent of average 81 88
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 10.8 8.4 129 12.3 10.5 117
DIVIDE PEAK 8880 15.0 13.7 109 16.9 14.6 116
OLD BATTLE 10000 22.0 21.7 101 26.2 24.0 109
SANDSTONE RS 8150 10.9 10.5 104 13.8 13.4 103
WHISKEY PARK 8950 22.0 20.1 109 23.3 20.5 114
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Basin wide percent of average 108 111
UPPER GREEN RIVER
BIG SANDY OPENING 9080 8.2 10.2 80 8.3 9.6 86
BLIND BULL SUM 8650 17.7 19.6 90 14.7 16.4 90
EAST RIM DIVIDE 7930 6.8 9.2 74 9.4 8.6 109
ELKHART PARK G.S. 9400 9.7 9.4 103 10.7 9.4 114
GROS VENTRE SUMMIT 8750 8.9 10.0 89 10.5 9.2 114
GUNSIGHT PASS 9820 10.3 -M * 11.3 -M *
KENDALL R.S. 7740 8.4 10.5 80 10.6 10.5 101
LOOMIS PARK 8240 12.1 12.1 100 14.5 12.6 115
NEW FORK LAKE 8340 9.0 8.2 110 8.6 8.3 104
SNIDER BASIN 8060 9.8 10.5 93 10.5 11.8 89
SPRING CREEK DIVIDE 9000 18.0 18.7 96 18.6 19.4 96
TRIPLE PEAK 8500 17.1 17.8 96 18.9 17.3 109
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Basin wide percent of average 92 102
LOWER GREEN RIVER
HAMS FORK 7840 6.9 9.1 76 7.6 8.9 85
HEWINTA 9519 5.3 7.3 73 8.0 9.9 81
HICKERSON PARK 9145 2.1 4.8 44 4.7 5.5 85
HOLE-IN-ROCK 9150 2.4 4.6 52 4.5 5.0 90
INDIAN CREEK 9425 14.9 18.8 79 14.2 17.9 79
KELLEY R.S. 8180 9.7 11.5 84 11.5 14.8 78
STEEL CREEK PARK 10200 6.8 10.3 66 9.8 10.9 90
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Basin wide percent of average 72 83
UPPER BEAR RIVER
BUG LAKE 7950 10.7 14.3 75 11.5 13.8 83
HAYDEN FORK 9212 11.1 10.7 104 13.8 14.5 95
KELLEY R.S. 8180 9.7 11.5 84 11.5 14.8 78
LILY LAKE 9156 8.8 8.9 99 10.6 12.2 87
MONTE CRISTO 8960 16.5 20.0 82 17.3 17.9 97
SALT RIVER SUMMIT 7760 9.1 10.1 90 10.7 13.5 79
TRIAL LAKE 9992 15.4 17.0 91 15.2 17.0 89
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Basin wide percent of average 88 87
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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.