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 2 , 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 12.8 85 13.7 15.0 91
COTTONWOOD CREEK 7670 17.7 14.4 123 21.2 18.8 113
GRAND TARGHEE 9260 26.6 -M * 23.3 -M *
GRANITE CREEK 6770 11.4 12.5 91 16.0 13.9 115
GRASSY LAKE 7265 20.2 23.2 87 23.4 25.3 92
GROS VENTRE SUMMIT 8750 8.6 9.5 91 10.2 8.7 117
GUNSIGHT PASS 9820 9.8 -M * 10.8 -M *
LEWIS LAKE DIVIDE 7850 17.1 23.3 73 21.4 25.1 85
PHILLIPS BENCH 8200 17.8 18.7 95 20.0 19.7 102
SALT RIVER SUMMIT 7760 8.7 9.4 93 10.2 12.7 80
SNAKE RIVER STATION 6920 11.0 12.8 86 15.1 15.7 96
SPRING CREEK DIVIDE 9000 17.5 17.5 100 18.0 18.5 97
THUMB DIVIDE 7980 11.0 11.9 92 12.9 12.8 101
TOGWOTEE PASS 9580 19.3 17.0 114 21.2 17.0 125
TWO OCEAN PLATEAU 9240 24.3 19.1 127 18.7 18.6 101
WILLOW CREEK 8380 22.0 20.4 108 26.4 22.0 120
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Basin wide percent of average 98 102
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 15.4 16.3 94 14.1 14.1 100
BLACK BEAR 8170 21.2 25.8 82 22.4 26.4 85
CANYON 7870 8.6 9.0 96 9.5 10.9 87
FISHER CREEK 9100 24.4 24.0 102 22.9 24.8 92
MADISON PLATEAU 7750 12.3 16.3 75 14.2 17.6 81
NORTHEAST ENTRANCE 7350 7.1 7.8 91 9.5 9.0 106
PARKER PEAK 9400 17.2 14.9 115 12.5 11.2 112
SYLVAN LAKE 8420 12.7 15.3 83 15.0 14.9 101
THUMB DIVIDE 7980 11.0 11.9 92 12.9 12.8 101
TWO OCEAN PLATEAU 9240 24.3 19.1 127 18.7 18.6 101
WHISKEY CREEK 6800 8.9 11.2 79 12.0 13.9 86
WHITE MILL 8700 16.1 16.2 99 15.9 18.4 86
WOLVERINE 7650 8.6 8.7 99 8.5 9.3 91
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Basin wide percent of average 96 93
WIND RIVER
BURROUGHS CREEK 8750 12.0 10.2 118 12.8 11.4 112
COLD SPRINGS 9630 4.9 6.0 82 6.6 7.1 93
DEER PARK 9700 6.3 11.7 54 10.1 14.7 69
HOBBS PARK 10100 6.8 9.9 69 7.1 8.3 86
LITTLE WARM 9370 7.4 7.8 95 9.5 9.2 103
SOUTH PASS 9040 7.0 11.4 61 9.2 12.3 75
ST. LAWRENCE ALT 8620 1.9 4.8 40 4.8 5.7 84
TOGWOTEE PASS 9580 19.3 17.0 114 21.2 17.0 125
TOWNSEND CREEK 8700 4.1 5.6 73 6.5 7.3 89
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Basin wide percent of average 83 94
BIGHORN BASIN
BALD MTN. 9380 13.9 13.6 102 11.5 11.9 97
BEAR TRAP MEADOW 8200 6.0 3.6 167 6.7 5.5 122
BLACKWATER 9780 16.3 16.7 98 15.0 14.3 105
BONE SPRINGS DIV 9350 14.2 10.7 133 11.0 9.7 113
EVENING STAR 9200 20.1 19.9 101 21.0 17.7 119
GRAVE SPRINGS 8550 5.2 5.8 90 6.5 6.4 102
KIRWIN 9550 8.7 7.7 113 9.8 7.7 127
MARQUETTE 8760 2.9 5.9 49 5.7 6.2 92
MIDDLE POWDER 7760 6.5 7.2 90 6.7 8.3 81
OWL CREEK 8975 3.7 3.4 109 3.6 3.7 97
POWDER RIVER PASS 9480 9.3 7.3 127 10.5 8.4 125
SHELL CREEK 9580 12.5 10.0 125 12.2 9.4 130
SYLVAN LAKE 8420 12.7 15.3 83 15.0 14.9 101
SYLVAN ROAD 7120 10.2 8.9 115 13.3 13.4 99
TIMBER CREEK 7950 2.8 3.7 76 5.9 4.5 131
YOUNTS PEAK 8350 13.7 12.1 113 12.3 11.5 107
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Basin wide percent of average 105 109
SHOSHONE RIVER
BLACKWATER 9780 16.3 16.7 98 15.0 14.3 105
EVENING STAR 9200 20.1 19.9 101 21.0 17.7 119
KIRWIN 9550 8.7 7.7 113 9.8 7.7 127
MARQUETTE 8760 2.9 5.9 49 5.7 6.2 92
SYLVAN LAKE 8420 12.7 15.3 83 15.0 14.9 101
SYLVAN ROAD 7120 10.2 8.9 115 13.3 13.4 99
YOUNTS PEAK 8350 13.7 12.1 113 12.3 11.5 107
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Basin wide percent of average 98 107
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.0 3.6 167 6.7 5.5 122
BIG GOOSE 7990 5.8 6.1 95 8.2 5.7 144
BONE SPRINGS DIV 9350 14.2 10.7 133 11.0 9.7 113
BURGESS JUNCTION 7880 8.7 7.5 116 9.4 8.0 118
CLOUD PEAK RESERVOIR 9860 12.1 8.1 149 11.5 8.2 140
DOME LAKE 8880 8.6 8.0 108 10.7 8.8 122
GRAVE SPRINGS 8550 5.2 5.8 90 6.5 6.4 102
HANSEN SAWMILL 8360 4.3 4.2 102 7.0 5.3 132
MIDDLE POWDER 7760 6.5 7.2 90 6.7 8.3 81
POWDER RIVER PASS 9480 9.3 7.3 127 10.5 8.4 125
SUCKER CREEK 8880 10.4 7.3 142 12.2 8.9 137
TIE CREEK 6870 3.6 4.0 90 10.0 6.8 147
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Basin wide percent of average 119 123
BELLE FOURCHE
BLIND PARK 6890 7.3 5.3 138 11.7 7.8 150
COLE CANYON 5910 4.2 4.6 91 9.2 4.7 196
NORTH RAPID CREEK 6130 6.9 5.1 135 9.9 6.3 157
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Basin wide percent of average 123 164
UPPER N. PLATTE RIVER
COLUMBINE 9160 18.3 16.7 110 17.4 16.8 104
DIVIDE PEAK 8880 14.2 13.1 108 16.2 13.8 117
ELK RIVER 8700 16.2 12.4 131 15.6 12.8 122
JOE WRIGHT 10120 16.1 14.0 115 19.7 16.3 121
NORTH FRENCH CREEK 10130 21.6 18.5 117 20.8 16.5 126
OLD BATTLE 10000 20.8 20.2 103 25.3 22.6 112
SAGE CREEK BASIN 7850 7.5 7.6 99 8.8 8.0 110
SOUTH BRUSH CREEK 8440 9.5 7.5 127 11.1 10.9 102
TOWER 10500 28.5 30.3 94 28.6 25.6 112
WEBBER SPRINGS 9250 15.8 16.2 98 18.9 18.2 104
WILLOW CREEK PASS 9540 8.6 7.6 113 8.2 8.4 98
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Basin wide percent of average 108 112
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.4 15.5 93 13.7 14.4 95
CASPER MTN. 7900 5.8 9.1 64 8.4 9.0 93
DEADMAN HILL 10220 11.1 10.7 104 11.6 10.7 108
DEER PARK 9700 6.3 11.7 54 10.1 14.7 69
LAPRELE CREEK 8375 5.2 7.3 71 6.2 8.2 76
RENO HILL 8400 7.1 8.5 84 8.2 9.4 87
ROACH 9700 11.2 11.1 101 12.8 11.7 109
SAND LAKE 10050 18.0 20.1 90 16.6 16.0 104
SOUTH PASS 9040 7.0 11.4 61 9.2 12.3 75
WINDY PEAK 7900 5.1 4.6 111 5.8 7.0 83
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Basin wide percent of average 83 90
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 9.5 7.9 120 11.8 10.0 118
DIVIDE PEAK 8880 14.2 13.1 108 16.2 13.8 117
OLD BATTLE 10000 20.8 20.2 103 25.3 22.6 112
SANDSTONE RS 8150 10.4 9.8 106 13.3 12.6 106
WHISKEY PARK 8950 21.0 18.7 112 22.4 19.5 115
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Basin wide percent of average 109 113
UPPER GREEN RIVER
BIG SANDY OPENING 9080 8.0 9.6 83 8.1 9.1 89
BLIND BULL SUM 8650 17.0 18.6 91 14.2 15.5 92
EAST RIM DIVIDE 7930 6.6 8.6 77 9.2 8.2 112
ELKHART PARK G.S. 9400 9.2 8.9 103 10.3 9.0 114
GROS VENTRE SUMMIT 8750 8.6 9.5 91 10.2 8.7 117
GUNSIGHT PASS 9820 9.8 -M * 10.8 -M *
KENDALL R.S. 7740 8.0 9.9 81 10.2 9.8 104
LOOMIS PARK 8240 11.8 11.3 104 14.2 11.9 119
NEW FORK LAKE 8340 8.7 7.7 113 8.3 7.9 105
SNIDER BASIN 8060 9.6 9.9 97 10.3 11.2 92
SPRING CREEK DIVIDE 9000 17.5 17.5 100 18.0 18.5 97
TRIPLE PEAK 8500 16.8 16.8 100 18.6 16.3 114
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Basin wide percent of average 95 104
LOWER GREEN RIVER
HAMS FORK 7840 6.6 8.5 78 7.3 8.4 87
HEWINTA 9519 5.2 6.8 76 7.9 9.4 84
HICKERSON PARK 9145 1.9 4.5 42 4.5 5.2 87
HOLE-IN-ROCK 9150 2.3 4.2 55 4.5 4.8 94
INDIAN CREEK 9425 14.4 17.7 81 13.7 16.9 81
KELLEY R.S. 8180 9.4 10.8 87 11.0 14.0 79
STEEL CREEK PARK 10200 6.6 9.5 69 9.8 10.2 96
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Basin wide percent of average 75 85
UPPER BEAR RIVER
BUG LAKE 7950 9.9 13.3 74 11.1 13.0 85
HAYDEN FORK 9212 10.6 9.9 107 13.3 13.7 97
KELLEY R.S. 8180 9.4 10.8 87 11.0 14.0 79
LILY LAKE 9156 8.6 8.3 104 10.3 11.6 89
MONTE CRISTO 8960 16.0 18.4 87 16.7 16.9 99
SALT RIVER SUMMIT 7760 8.7 9.4 93 10.2 12.7 80
TRIAL LAKE 9992 14.4 15.8 91 14.2 16.0 89
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Basin wide percent of average 90 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.