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: FEBRUARY 4 , 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 13.1 83 13.7 15.2 90
COTTONWOOD CREEK 7670 17.7 14.6 121 21.3 19.1 112
GRAND TARGHEE 9260 26.9 -M * 23.5 -M *
GRANITE CREEK 6770 11.4 12.8 89 16.0 14.1 113
GRASSY LAKE 7265 20.2 23.7 85 23.4 25.7 91
GROS VENTRE SUMMIT 8750 8.5 9.7 88 10.1 8.8 115
GUNSIGHT PASS 9820 9.8 -M * 10.8 -M *
LEWIS LAKE DIVIDE 7850 17.1 23.8 72 21.4 25.5 84
PHILLIPS BENCH 8200 17.8 19.1 93 20.0 20.0 100
SALT RIVER SUMMIT 7760 8.8 9.6 92 10.4 12.9 81
SNAKE RIVER STATION 6920 11.0 13.1 84 15.1 16.0 94
SPRING CREEK DIVIDE 9000 17.7 17.9 99 18.2 18.7 97
THUMB DIVIDE 7980 11.0 12.1 91 12.8 13.0 98
TOGWOTEE PASS 9580 19.4 17.3 112 21.3 17.2 124
TWO OCEAN PLATEAU 9240 24.4 19.4 126 18.7 18.9 99
WILLOW CREEK 8380 22.0 20.8 106 26.5 22.3 119
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Basin wide percent of average 96 101
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 15.6 16.5 95 14.3 14.3 100
BLACK BEAR 8170 21.3 26.1 82 22.7 26.8 85
CANYON 7870 8.6 9.1 95 9.5 11.0 86
FISHER CREEK 9100 24.6 24.2 102 23.2 25.2 92
MADISON PLATEAU 7750 12.3 16.5 75 14.3 18.0 79
NORTHEAST ENTRANCE 7350 7.3 7.9 92 9.6 9.1 105
PARKER PEAK 9400 17.4 15.1 115 12.6 11.4 111
SYLVAN LAKE 8420 12.8 15.4 83 15.1 15.1 100
THUMB DIVIDE 7980 11.0 12.1 91 12.8 13.0 98
TWO OCEAN PLATEAU 9240 24.4 19.4 126 18.7 18.9 99
WHISKEY CREEK 6800 8.9 11.3 79 12.0 14.1 85
WHITE MILL 8700 16.2 16.4 99 16.0 18.7 86
WOLVERINE 7650 8.7 8.8 99 8.5 9.4 90
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Basin wide percent of average 95 92
WIND RIVER
BURROUGHS CREEK 8750 12.0 10.3 117 12.8 11.5 111
COLD SPRINGS 9630 4.9 6.1 80 6.7 7.2 93
DEER PARK 9700 6.3 11.6 54 10.2 14.9 68
HOBBS PARK 10100 6.8 9.9 69 7.3 8.4 87
LITTLE WARM 9370 7.5 7.9 95 9.5 9.3 102
SOUTH PASS 9040 7.0 11.5 61 9.1 12.6 72
ST. LAWRENCE ALT 8620 1.9 4.8 40 4.9 5.8 84
TOGWOTEE PASS 9580 19.4 17.3 112 21.3 17.2 124
TOWNSEND CREEK 8700 4.2 5.6 75 6.5 7.5 87
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Basin wide percent of average 82 94
BIGHORN BASIN
BALD MTN. 9380 14.1 13.7 103 11.6 12.0 97
BEAR TRAP MEADOW 8200 6.1 3.6 169 6.7 5.6 120
BLACKWATER 9780 16.3 16.8 97 15.0 14.5 103
BONE SPRINGS DIV 9350 14.4 10.8 133 11.2 9.8 114
EVENING STAR 9200 20.5 20.1 102 21.4 18.0 119
GRAVE SPRINGS 8550 5.4 6.0 90 6.6 6.5 102
KIRWIN 9550 8.8 7.8 113 10.0 7.8 128
MARQUETTE 8760 3.0 6.0 50 5.9 6.3 94
MIDDLE POWDER 7760 6.6 7.5 88 6.6 8.4 79
OWL CREEK 8975 3.7 3.5 106 3.7 3.8 97
POWDER RIVER PASS 9480 9.4 7.4 127 10.7 8.5 126
SHELL CREEK 9580 12.7 10.1 126 12.3 9.5 129
SYLVAN LAKE 8420 12.8 15.4 83 15.1 15.1 100
SYLVAN ROAD 7120 10.3 9.0 114 13.3 13.6 98
TIMBER CREEK 7950 2.8 3.7 76 5.9 4.6 128
YOUNTS PEAK 8350 14.0 12.2 115 12.6 11.6 109
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Basin wide percent of average 105 108
SHOSHONE RIVER
BLACKWATER 9780 16.3 16.8 97 15.0 14.5 103
EVENING STAR 9200 20.5 20.1 102 21.4 18.0 119
KIRWIN 9550 8.8 7.8 113 10.0 7.8 128
MARQUETTE 8760 3.0 6.0 50 5.9 6.3 94
SYLVAN LAKE 8420 12.8 15.4 83 15.1 15.1 100
SYLVAN ROAD 7120 10.3 9.0 114 13.3 13.6 98
YOUNTS PEAK 8350 14.0 12.2 115 12.6 11.6 109
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Basin wide percent of average 98 107
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.1 3.6 169 6.7 5.6 120
BIG GOOSE 7990 5.9 6.2 95 8.2 5.8 141
BONE SPRINGS DIV 9350 14.4 10.8 133 11.2 9.8 114
BURGESS JUNCTION 7880 8.7 7.5 116 9.4 8.1 116
CLOUD PEAK RESERVOIR 9860 12.4 8.2 151 11.8 8.4 140
DOME LAKE 8880 8.7 8.1 107 10.8 8.9 121
GRAVE SPRINGS 8550 5.4 6.0 90 6.6 6.5 102
HANSEN SAWMILL 8360 4.4 4.3 102 7.2 5.4 133
MIDDLE POWDER 7760 6.6 7.5 88 6.6 8.4 79
POWDER RIVER PASS 9480 9.4 7.4 127 10.7 8.5 126
SUCKER CREEK 8880 10.4 7.4 141 12.3 9.0 137
TIE CREEK 6870 3.7 4.2 88 10.1 6.9 146
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Basin wide percent of average 118 122
BELLE FOURCHE
BLIND PARK 6890 7.5 5.5 136 11.9 7.9 151
COLE CANYON 5910 4.5 4.6 98 9.3 4.8 194
NORTH RAPID CREEK 6130 7.1 5.2 137 10.1 6.4 158
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Basin wide percent of average 125 164
UPPER N. PLATTE RIVER
COLUMBINE 9160 18.4 17.1 108 17.4 17.1 102
DIVIDE PEAK 8880 14.2 13.2 108 16.3 14.0 116
ELK RIVER 8700 16.2 12.7 128 15.7 13.0 121
JOE WRIGHT 10120 16.0 14.3 112 19.7 16.6 119
NORTH FRENCH CREEK 10130 21.6 18.8 115 20.9 16.7 125
OLD BATTLE 10000 20.9 20.6 101 25.4 23.0 110
SAGE CREEK BASIN 7850 7.5 7.7 97 8.8 8.1 109
SOUTH BRUSH CREEK 8440 9.5 7.7 123 11.2 11.1 101
TOWER 10500 28.4 30.9 92 28.7 26.1 110
WEBBER SPRINGS 9250 15.9 16.6 96 19.0 18.4 103
WILLOW CREEK PASS 9540 8.6 7.7 112 8.2 8.5 96
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Basin wide percent of average 106 111
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.4 15.7 92 13.8 14.6 95
CASPER MTN. 7900 5.9 9.3 63 8.4 9.1 92
DEADMAN HILL 10220 11.1 10.8 103 11.6 10.8 107
DEER PARK 9700 6.3 11.6 54 10.2 14.9 68
LAPRELE CREEK 8375 5.3 7.4 72 6.3 8.3 76
RENO HILL 8400 7.2 8.6 84 8.3 9.5 87
ROACH 9700 11.3 11.3 100 12.9 11.9 108
SAND LAKE 10050 18.1 20.4 89 16.7 16.2 103
SOUTH PASS 9040 7.0 11.5 61 9.1 12.6 72
WINDY PEAK 7900 5.1 4.7 109 5.8 7.1 82
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Basin wide percent of average 82 90
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 9.4 8.0 118 11.8 10.1 117
DIVIDE PEAK 8880 14.2 13.2 108 16.3 14.0 116
OLD BATTLE 10000 20.9 20.6 101 25.4 23.0 110
SANDSTONE RS 8150 10.3 10.0 103 13.3 12.8 104
WHISKEY PARK 8950 21.0 19.1 110 22.5 19.8 114
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Basin wide percent of average 107 112
UPPER GREEN RIVER
BIG SANDY OPENING 9080 7.9 9.8 81 8.0 9.2 87
BLIND BULL SUM 8650 17.1 18.9 90 14.3 15.8 91
EAST RIM DIVIDE 7930 6.7 8.8 76 9.2 8.3 111
ELKHART PARK G.S. 9400 9.3 9.0 103 10.4 9.1 114
GROS VENTRE SUMMIT 8750 8.5 9.7 88 10.1 8.8 115
GUNSIGHT PASS 9820 9.8 -M * 10.8 -M *
KENDALL R.S. 7740 8.0 10.1 79 10.2 10.0 102
LOOMIS PARK 8240 11.7 11.6 101 14.1 12.1 117
NEW FORK LAKE 8340 8.7 7.9 110 8.3 8.0 104
SNIDER BASIN 8060 9.6 10.1 95 10.3 11.3 91
SPRING CREEK DIVIDE 9000 17.7 17.9 99 18.2 18.7 97
TRIPLE PEAK 8500 16.8 17.1 98 18.6 16.6 112
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Basin wide percent of average 93 103
LOWER GREEN RIVER
HAMS FORK 7840 6.6 8.6 77 7.4 8.6 86
HEWINTA 9519 5.2 6.9 75 7.9 9.5 83
HICKERSON PARK 9145 1.9 4.6 41 4.3 5.3 81
HOLE-IN-ROCK 9150 2.3 4.3 53 4.4 4.9 90
INDIAN CREEK 9425 14.5 18.1 80 13.9 17.2 81
KELLEY R.S. 8180 9.4 11.0 85 11.1 14.2 78
STEEL CREEK PARK 10200 6.7 9.7 69 9.8 10.4 94
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Basin wide percent of average 74 84
UPPER BEAR RIVER
BUG LAKE 7950 10.1 13.6 74 11.1 13.2 84
HAYDEN FORK 9212 10.7 10.1 106 13.3 13.9 96
KELLEY R.S. 8180 9.4 11.0 85 11.1 14.2 78
LILY LAKE 9156 8.5 8.5 100 10.3 11.7 88
MONTE CRISTO 8960 16.1 18.9 85 16.8 17.2 98
SALT RIVER SUMMIT 7760 8.8 9.6 92 10.4 12.9 81
TRIAL LAKE 9992 14.4 16.2 89 14.2 16.3 87
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Basin wide percent of average 89 88
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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.