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 SUNDAY: FEBRUARY 1 , 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 12.7 86 13.7 14.9 92
COTTONWOOD CREEK 7670 17.7 14.2 125 21.3 18.7 114
GRAND TARGHEE 9260 26.7 -M * 23.4 -M *
GRANITE CREEK 6770 11.4 12.4 92 16.0 13.7 117
GRASSY LAKE 7265 20.2 23.0 88 23.5 25.0 94
GROS VENTRE SUMMIT 8750 8.7 9.5 92 10.2 8.7 117
GUNSIGHT PASS 9820 9.8 -M * 10.8 -M *
LEWIS LAKE DIVIDE 7850 17.1 23.1 74 21.6 24.9 87
PHILLIPS BENCH 8200 17.8 18.5 96 20.0 19.5 103
SALT RIVER SUMMIT 7760 8.8 9.2 96 10.4 12.6 83
SNAKE RIVER STATION 6920 11.0 12.6 87 15.1 15.6 97
SPRING CREEK DIVIDE 9000 17.6 17.4 101 18.1 18.3 99
THUMB DIVIDE 7980 11.0 11.8 93 12.8 12.7 101
TOGWOTEE PASS 9580 19.3 16.9 114 21.2 16.8 126
TWO OCEAN PLATEAU 9240 24.3 19.0 128 18.7 18.5 101
WILLOW CREEK 8380 22.0 20.2 109 26.5 21.8 122
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Basin wide percent of average 99 103
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 15.3 16.2 94 14.1 14.0 101
BLACK BEAR 8170 21.2 25.6 83 22.4 26.1 86
CANYON 7870 8.6 8.9 97 9.5 10.8 88
FISHER CREEK 9100 24.4 23.8 103 22.9 24.6 93
MADISON PLATEAU 7750 12.3 16.2 76 14.2 17.5 81
NORTHEAST ENTRANCE 7350 7.1 7.7 92 9.5 8.9 107
PARKER PEAK 9400 17.2 14.8 116 12.1 11.1 109
SYLVAN LAKE 8420 12.7 15.2 84 15.0 14.8 101
THUMB DIVIDE 7980 11.0 11.8 93 12.8 12.7 101
TWO OCEAN PLATEAU 9240 24.3 19.0 128 18.7 18.5 101
WHISKEY CREEK 6800 8.9 11.1 80 12.0 13.8 87
WHITE MILL 8700 16.1 16.1 100 15.9 18.3 87
WOLVERINE 7650 8.6 8.6 100 8.4 9.2 91
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Basin wide percent of average 96 94
WIND RIVER
BURROUGHS CREEK 8750 11.9 10.1 118 12.8 11.3 113
COLD SPRINGS 9630 4.9 6.0 82 6.6 7.1 93
DEER PARK 9700 6.3 11.7 54 10.2 14.5 70
HOBBS PARK 10100 6.8 9.8 69 7.1 8.2 87
LITTLE WARM 9370 7.5 7.8 96 9.5 9.1 104
SOUTH PASS 9040 7.0 11.4 61 9.1 12.2 75
ST. LAWRENCE ALT 8620 1.9 4.8 40 4.9 5.7 86
TOGWOTEE PASS 9580 19.3 16.9 114 21.2 16.8 126
TOWNSEND CREEK 8700 4.3 5.6 77 6.5 7.3 89
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Basin wide percent of average 83 95
BIGHORN BASIN
BALD MTN. 9380 13.9 13.5 103 11.4 11.8 97
BEAR TRAP MEADOW 8200 6.0 3.5 171 6.7 5.5 122
BLACKWATER 9780 16.1 16.6 97 14.8 14.2 104
BONE SPRINGS DIV 9350 14.2 10.6 134 11.0 9.6 115
EVENING STAR 9200 20.2 19.7 103 21.0 17.6 119
GRAVE SPRINGS 8550 5.3 5.7 93 6.5 6.4 102
KIRWIN 9550 8.7 7.7 113 9.8 7.6 129
MARQUETTE 8760 2.8 5.9 47 5.8 6.2 94
MIDDLE POWDER 7760 6.6 7.2 92 6.6 8.3 80
OWL CREEK 8975 3.7 3.4 109 3.6 3.7 97
POWDER RIVER PASS 9480 9.3 7.2 129 10.5 8.3 127
SHELL CREEK 9580 12.5 9.9 126 12.2 9.3 131
SYLVAN LAKE 8420 12.7 15.2 84 15.0 14.8 101
SYLVAN ROAD 7120 10.2 8.8 116 13.3 13.3 100
TIMBER CREEK 7950 2.8 3.6 78 5.9 4.5 131
YOUNTS PEAK 8350 13.7 12.0 114 12.4 11.4 109
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Basin wide percent of average 105 109
SHOSHONE RIVER
BLACKWATER 9780 16.1 16.6 97 14.8 14.2 104
EVENING STAR 9200 20.2 19.7 103 21.0 17.6 119
KIRWIN 9550 8.7 7.7 113 9.8 7.6 129
MARQUETTE 8760 2.8 5.9 47 5.8 6.2 94
SYLVAN LAKE 8420 12.7 15.2 84 15.0 14.8 101
SYLVAN ROAD 7120 10.2 8.8 116 13.3 13.3 100
YOUNTS PEAK 8350 13.7 12.0 114 12.4 11.4 109
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Basin wide percent of average 98 108
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.0 3.5 171 6.7 5.5 122
BIG GOOSE 7990 5.8 6.0 97 8.0 5.7 140
BONE SPRINGS DIV 9350 14.2 10.6 134 11.0 9.6 115
BURGESS JUNCTION 7880 8.6 7.4 116 9.3 7.9 118
CLOUD PEAK RESERVOIR 9860 12.2 8.1 151 11.5 8.2 140
DOME LAKE 8880 8.6 7.9 109 10.7 8.7 123
GRAVE SPRINGS 8550 5.3 5.7 93 6.5 6.4 102
HANSEN SAWMILL 8360 4.4 4.2 105 7.0 5.3 132
MIDDLE POWDER 7760 6.6 7.2 92 6.6 8.3 80
POWDER RIVER PASS 9480 9.3 7.2 129 10.5 8.3 127
SUCKER CREEK 8880 10.4 7.2 144 12.2 8.8 139
TIE CREEK 6870 3.6 4.0 90 10.0 6.8 147
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Basin wide percent of average 120 123
BELLE FOURCHE
BLIND PARK 6890 7.1 5.2 137 11.5 7.8 147
COLE CANYON 5910 4.1 4.5 91 9.2 4.7 196
NORTH RAPID CREEK 6130 6.8 5.0 136 9.9 6.3 157
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Basin wide percent of average 122 163
UPPER N. PLATTE RIVER
COLUMBINE 9160 18.3 16.5 111 17.4 16.7 104
DIVIDE PEAK 8880 14.2 13.0 109 16.2 13.7 118
ELK RIVER 8700 16.1 12.2 132 15.6 12.7 123
JOE WRIGHT 10120 16.1 13.9 116 19.7 16.2 122
NORTH FRENCH CREEK 10130 21.5 18.4 117 20.7 16.4 126
OLD BATTLE 10000 20.9 20.0 104 25.3 22.4 113
SAGE CREEK BASIN 7850 7.5 7.5 100 8.8 7.9 111
SOUTH BRUSH CREEK 8440 9.5 7.4 128 11.2 10.9 103
TOWER 10500 28.5 30.1 95 28.6 25.4 113
WEBBER SPRINGS 9250 15.8 16.1 98 18.9 18.0 105
WILLOW CREEK PASS 9540 8.4 7.5 112 8.2 8.3 99
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Basin wide percent of average 109 113
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.4 15.3 94 13.7 14.3 96
CASPER MTN. 7900 5.9 9.0 66 8.4 8.9 94
DEADMAN HILL 10220 11.1 10.6 105 11.6 10.6 109
DEER PARK 9700 6.3 11.7 54 10.2 14.5 70
LAPRELE CREEK 8375 5.3 7.3 73 6.3 8.1 78
RENO HILL 8400 7.1 8.4 85 8.3 9.3 89
ROACH 9700 11.2 11.0 102 12.9 11.7 110
SAND LAKE 10050 18.0 19.9 90 16.6 15.9 104
SOUTH PASS 9040 7.0 11.4 61 9.1 12.2 75
WINDY PEAK 7900 5.1 4.5 113 5.8 7.0 83
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Basin wide percent of average 84 91
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 9.6 7.8 123 11.9 9.9 120
DIVIDE PEAK 8880 14.2 13.0 109 16.2 13.7 118
OLD BATTLE 10000 20.9 20.0 104 25.3 22.4 113
SANDSTONE RS 8150 10.4 9.7 107 13.3 12.5 106
WHISKEY PARK 8950 20.9 18.5 113 22.4 19.4 115
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Basin wide percent of average 110 114
UPPER GREEN RIVER
BIG SANDY OPENING 9080 8.0 9.5 84 8.0 9.0 89
BLIND BULL SUM 8650 17.0 18.4 92 14.2 15.4 92
EAST RIM DIVIDE 7930 6.6 8.5 78 9.2 8.1 114
ELKHART PARK G.S. 9400 9.2 8.8 105 10.3 8.9 116
GROS VENTRE SUMMIT 8750 8.7 9.5 92 10.2 8.7 117
GUNSIGHT PASS 9820 9.8 -M * 10.8 -M *
KENDALL R.S. 7740 8.0 9.8 82 10.3 9.7 106
LOOMIS PARK 8240 11.8 11.2 105 14.2 11.8 120
NEW FORK LAKE 8340 8.7 7.7 113 8.3 7.9 105
SNIDER BASIN 8060 9.6 9.8 98 10.3 11.1 93
SPRING CREEK DIVIDE 9000 17.6 17.4 101 18.1 18.3 99
TRIPLE PEAK 8500 16.9 16.6 102 18.7 16.2 115
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Basin wide percent of average 96 105
LOWER GREEN RIVER
HAMS FORK 7840 6.7 8.4 80 7.5 8.4 89
HEWINTA 9519 5.1 6.7 76 8.0 9.3 86
HICKERSON PARK 9145 1.9 4.4 43 4.4 5.2 85
HOLE-IN-ROCK 9150 2.3 4.1 56 4.4 4.8 92
INDIAN CREEK 9425 14.5 17.6 82 13.8 16.8 82
KELLEY R.S. 8180 9.5 10.7 89 11.2 13.9 81
STEEL CREEK PARK 10200 6.6 9.4 70 9.8 10.1 97
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Basin wide percent of average 76 86
UPPER BEAR RIVER
BUG LAKE 7950 9.7 13.2 73 11.1 12.9 86
HAYDEN FORK 9212 10.6 9.8 108 13.3 13.6 98
KELLEY R.S. 8180 9.5 10.7 89 11.2 13.9 81
LILY LAKE 9156 8.6 8.2 105 10.3 11.5 90
MONTE CRISTO 8960 16.2 18.2 89 16.7 16.7 100
SALT RIVER SUMMIT 7760 8.8 9.2 96 10.4 12.6 83
TRIAL LAKE 9992 14.5 15.7 92 14.2 15.8 90
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Basin wide percent of average 92 90
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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.