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: FEBRUARY 13 , 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 11.2 14.2 79 14.0 16.4 85
COTTONWOOD CREEK 7670 18.2 15.8 115 21.8 20.4 107
GRAND TARGHEE 9260 27.9 -M * 24.1 -M *
GRANITE CREEK 6770 11.7 13.9 84 16.1 15.3 105
GRASSY LAKE 7265 22.0 25.8 85 25.1 27.5 91
GROS VENTRE SUMMIT 8750 8.6 10.2 84 10.3 9.5 108
GUNSIGHT PASS 9820 10.2 -M * 11.2 -M *
LEWIS LAKE DIVIDE 7850 -M 25.9 * -M 27.5 *
PHILLIPS BENCH 8200 18.2 20.8 87 20.3 21.6 94
SALT RIVER SUMMIT 7760 9.2 10.6 87 10.7 13.9 77
SNAKE RIVER STATION 6920 11.6 14.3 81 15.7 17.2 91
SPRING CREEK DIVIDE 9000 18.1 19.3 94 18.6 20.0 93
THUMB DIVIDE 7980 11.1 13.2 84 12.9 14.0 92
TOGWOTEE PASS 9580 19.8 18.5 107 21.8 18.4 118
TWO OCEAN PLATEAU 9240 24.9 20.8 120 19.1 20.4 94
WILLOW CREEK 8380 23.3 22.4 104 27.6 23.9 115
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Basin wide percent of average 95 98
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 15.6 17.8 88 14.3 15.3 93
BLACK BEAR 8170 22.7 28.3 80 23.7 29.0 82
CANYON 7870 8.9 9.8 91 9.6 11.7 82
FISHER CREEK 9100 25.6 26.1 98 23.6 27.0 87
MADISON PLATEAU 7750 12.9 18.0 72 14.9 19.4 77
NORTHEAST ENTRANCE 7350 7.4 8.5 87 9.7 9.7 100
PARKER PEAK 9400 17.8 16.0 111 13.1 12.1 108
SYLVAN LAKE 8420 13.2 16.3 81 15.6 16.1 97
THUMB DIVIDE 7980 11.1 13.2 84 12.9 14.0 92
TWO OCEAN PLATEAU 9240 24.9 20.8 120 19.1 20.4 94
WHISKEY CREEK 6800 9.4 12.4 76 12.6 15.2 83
WHITE MILL 8700 16.8 17.7 95 16.4 20.1 82
WOLVERINE 7650 8.8 9.4 94 8.3 10.0 83
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Basin wide percent of average 91 88
WIND RIVER
BURROUGHS CREEK 8750 12.0 11.0 109 12.8 12.2 105
COLD SPRINGS 9630 4.8 6.3 76 6.6 7.6 87
DEER PARK 9700 6.6 13.1 50 10.3 16.0 64
HOBBS PARK 10100 7.0 10.4 67 7.2 8.9 81
LITTLE WARM 9370 7.7 8.3 93 9.8 9.8 100
SOUTH PASS 9040 7.1 12.1 59 9.2 13.4 69
ST. LAWRENCE ALT 8620 -M 5.1 * 4.9 6.2 79
TOGWOTEE PASS 9580 19.8 18.5 107 21.8 18.4 118
TOWNSEND CREEK 8700 4.0 6.1 66 6.3 7.9 80
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Basin wide percent of average 80 89
BIGHORN BASIN
BALD MTN. 9380 14.6 14.3 102 11.9 12.7 94
BEAR TRAP MEADOW 8200 6.4 3.8 168 6.9 5.9 117
BLACKWATER 9780 16.3 17.8 92 15.0 15.4 97
BONE SPRINGS DIV 9350 14.8 11.5 129 11.4 10.4 110
EVENING STAR 9200 20.8 21.9 95 22.2 19.3 115
GRAVE SPRINGS 8550 5.7 6.3 90 6.9 6.8 101
KIRWIN 9550 8.7 8.2 106 9.8 8.2 120
MARQUETTE 8760 2.9 6.2 47 5.5 6.7 82
MIDDLE POWDER 7760 7.1 7.9 90 7.1 8.8 81
OWL CREEK 8975 3.8 3.6 106 3.7 4.0 92
POWDER RIVER PASS 9480 9.9 7.7 129 11.1 9.0 123
SHELL CREEK 9580 13.2 10.6 125 12.9 10.0 129
SYLVAN LAKE 8420 13.2 16.3 81 15.6 16.1 97
SYLVAN ROAD 7120 10.4 9.8 106 13.5 14.3 94
TIMBER CREEK 7950 2.7 3.9 69 6.1 4.8 127
YOUNTS PEAK 8350 14.0 12.9 109 12.9 12.3 105
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Basin wide percent of average 101 105
SHOSHONE RIVER
BLACKWATER 9780 16.3 17.8 92 15.0 15.4 97
EVENING STAR 9200 20.8 21.9 95 22.2 19.3 115
KIRWIN 9550 8.7 8.2 106 9.8 8.2 120
MARQUETTE 8760 2.9 6.2 47 5.5 6.7 82
SYLVAN LAKE 8420 13.2 16.3 81 15.6 16.1 97
SYLVAN ROAD 7120 10.4 9.8 106 13.5 14.3 94
YOUNTS PEAK 8350 14.0 12.9 109 12.9 12.3 105
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Basin wide percent of average 93 102
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.4 3.8 168 6.9 5.9 117
BIG GOOSE 7990 6.1 6.7 91 8.3 6.1 136
BONE SPRINGS DIV 9350 14.8 11.5 129 11.4 10.4 110
BURGESS JUNCTION 7880 8.7 8.0 109 9.4 8.5 111
CLOUD PEAK RESERVOIR 9860 12.8 8.8 145 11.6 8.8 132
DOME LAKE 8880 8.9 8.7 102 11.1 9.3 119
GRAVE SPRINGS 8550 5.7 6.3 90 6.9 6.8 101
HANSEN SAWMILL 8360 4.6 4.5 102 7.3 5.7 128
MIDDLE POWDER 7760 7.1 7.9 90 7.1 8.8 81
POWDER RIVER PASS 9480 9.9 7.7 129 11.1 9.0 123
SUCKER CREEK 8880 10.5 7.9 133 12.4 9.5 131
TIE CREEK 6870 3.5 4.4 80 9.9 7.2 138
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Basin wide percent of average 115 118
BELLE FOURCHE
BLIND PARK 6890 7.7 5.8 133 12.2 8.4 145
COLE CANYON 5910 4.5 5.0 90 9.2 5.0 184
NORTH RAPID CREEK 6130 7.6 5.8 131 10.4 6.8 153
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Basin wide percent of average 119 157
UPPER N. PLATTE RIVER
COLUMBINE 9160 19.7 18.9 104 18.5 18.3 101
DIVIDE PEAK 8880 15.4 14.0 110 17.3 15.0 115
ELK RIVER 8700 17.6 13.9 127 16.4 14.1 116
JOE WRIGHT 10120 16.7 15.3 109 20.1 17.8 113
NORTH FRENCH CREEK 10130 23.1 20.0 116 22.1 17.9 123
OLD BATTLE 10000 22.9 22.5 102 27.9 24.7 113
SAGE CREEK BASIN 7850 8.5 8.1 105 9.8 8.7 113
SOUTH BRUSH CREEK 8440 9.8 8.4 117 11.3 11.9 95
TOWER 10500 31.0 33.3 93 30.3 28.0 108
WEBBER SPRINGS 9250 17.2 18.1 95 20.3 19.6 104
WILLOW CREEK PASS 9540 9.2 8.4 110 8.7 9.1 96
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Basin wide percent of average 106 110
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 15.2 16.8 90 14.3 15.5 92
CASPER MTN. 7900 7.6 9.9 77 10.0 9.7 103
DEADMAN HILL 10220 11.7 11.6 101 12.1 11.6 104
DEER PARK 9700 6.6 13.1 50 10.3 16.0 64
LAPRELE CREEK 8375 6.4 7.9 81 7.1 8.8 81
RENO HILL 8400 8.1 9.1 89 9.3 10.2 91
ROACH 9700 11.7 12.3 95 13.4 12.8 105
SAND LAKE 10050 19.4 21.9 89 17.7 17.2 103
SOUTH PASS 9040 7.1 12.1 59 9.2 13.4 69
WINDY PEAK 7900 6.0 5.2 115 6.4 7.5 85
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Basin wide percent of average 83 89
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 11.6 8.6 135 12.9 10.8 119
DIVIDE PEAK 8880 15.4 14.0 110 17.3 15.0 115
OLD BATTLE 10000 22.9 22.5 102 27.9 24.7 113
SANDSTONE RS 8150 11.9 10.9 109 14.7 13.8 107
WHISKEY PARK 8950 23.3 20.7 113 24.5 21.0 117
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Basin wide percent of average 111 114
UPPER GREEN RIVER
BIG SANDY OPENING 9080 7.9 10.6 75 7.9 10.0 79
BLIND BULL SUM 8650 17.5 20.3 86 14.6 16.9 86
EAST RIM DIVIDE 7930 6.7 9.6 70 9.4 8.9 106
ELKHART PARK G.S. 9400 9.5 9.7 98 10.6 9.7 109
GROS VENTRE SUMMIT 8750 8.6 10.2 84 10.3 9.5 108
GUNSIGHT PASS 9820 10.2 -M * 11.2 -M *
KENDALL R.S. 7740 8.2 10.8 76 10.5 10.8 97
LOOMIS PARK 8240 12.0 12.5 96 14.4 13.0 111
NEW FORK LAKE 8340 8.9 8.5 105 8.3 8.6 97
SNIDER BASIN 8060 9.6 10.9 88 10.3 12.2 84
SPRING CREEK DIVIDE 9000 18.1 19.3 94 18.6 20.0 93
TRIPLE PEAK 8500 17.0 18.4 92 18.8 17.9 105
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Basin wide percent of average 88 97
LOWER GREEN RIVER
HAMS FORK 7840 6.8 9.4 72 7.6 9.2 83
HEWINTA 9519 5.9 7.7 77 8.7 10.2 85
HICKERSON PARK 9145 2.2 5.0 44 4.8 5.6 86
HOLE-IN-ROCK 9150 2.7 4.8 56 4.9 5.2 94
INDIAN CREEK 9425 15.0 19.4 77 14.2 18.5 77
KELLEY R.S. 8180 9.6 12.0 80 11.0 15.2 72
STEEL CREEK PARK 10200 7.4 10.7 69 10.8 11.2 96
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Basin wide percent of average 72 83
UPPER BEAR RIVER
BUG LAKE 7950 11.3 14.8 76 11.8 14.2 83
HAYDEN FORK 9212 11.8 11.2 105 14.5 15.0 97
KELLEY R.S. 8180 9.6 12.0 80 11.0 15.2 72
LILY LAKE 9156 9.6 9.3 103 11.4 12.6 90
MONTE CRISTO 8960 17.4 20.9 83 17.9 18.5 97
SALT RIVER SUMMIT 7760 9.2 10.6 87 10.7 13.9 77
TRIAL LAKE 9992 16.4 17.7 93 16.1 17.7 91
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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.