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: JANUARY 25 , 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 10.6 11.7 91 13.1 14.0 94
COTTONWOOD CREEK 7670 17.0 13.3 128 20.4 17.7 115
GRAND TARGHEE 9260 25.2 -M * 22.3 -M *
GRANITE CREEK 6770 11.0 11.3 97 15.5 12.9 120
GRASSY LAKE 7265 19.1 21.2 90 22.6 23.5 96
GROS VENTRE SUMMIT 8750 8.8 9.0 98 10.1 8.2 123
GUNSIGHT PASS 9820 9.2 -M * 10.2 -M *
LEWIS LAKE DIVIDE 7850 16.4 21.3 77 20.9 23.4 89
PHILLIPS BENCH 8200 17.1 17.2 99 19.3 18.3 105
SALT RIVER SUMMIT 7760 8.1 8.4 96 9.8 11.9 82
SNAKE RIVER STATION 6920 10.3 11.5 90 14.5 14.6 99
SPRING CREEK DIVIDE 9000 16.8 16.3 103 17.5 17.3 101
THUMB DIVIDE 7980 10.6 10.8 98 12.5 12.0 104
TOGWOTEE PASS 9580 18.8 15.8 119 20.6 15.9 130
TWO OCEAN PLATEAU 9240 23.8 17.8 134 18.3 17.4 105
WILLOW CREEK 8380 20.6 19.0 108 25.2 20.6 122
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Basin wide percent of average 102 106
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 14.9 15.3 97 13.6 13.1 104
BLACK BEAR 8170 19.9 24.4 82 21.6 24.3 89
CANYON 7870 7.9 8.4 94 8.7 10.2 85
FISHER CREEK 9100 23.1 22.5 103 21.8 23.1 94
MADISON PLATEAU 7750 11.7 15.4 76 13.7 16.4 84
NORTHEAST ENTRANCE 7350 6.5 7.3 89 8.9 8.4 106
PARKER PEAK 9400 16.3 14.0 116 11.7 10.5 111
SYLVAN LAKE 8420 12.1 14.2 85 14.4 13.9 104
THUMB DIVIDE 7980 10.6 10.8 98 12.5 12.0 104
TWO OCEAN PLATEAU 9240 23.8 17.8 134 18.3 17.4 105
WHISKEY CREEK 6800 8.4 10.5 80 11.3 13.0 87
WHITE MILL 8700 15.1 15.3 99 15.1 17.1 88
WOLVERINE 7650 7.7 8.2 94 7.5 8.7 86
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Basin wide percent of average 97 95
WIND RIVER
BURROUGHS CREEK 8750 11.6 9.6 121 12.3 10.7 115
COLD SPRINGS 9630 4.8 5.7 84 6.4 6.8 94
DEER PARK 9700 6.4 11.4 56 9.9 13.7 72
HOBBS PARK 10100 6.9 9.4 73 7.2 7.8 92
LITTLE WARM 9370 7.1 7.3 97 9.1 8.7 105
SOUTH PASS 9040 6.9 10.7 64 8.6 11.5 75
ST. LAWRENCE ALT 8620 1.7 4.6 37 4.7 5.4 87
TOGWOTEE PASS 9580 18.8 15.8 119 20.6 15.9 130
TOWNSEND CREEK 8700 4.2 5.4 78 6.2 7.0 89
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Basin wide percent of average 86 97
BIGHORN BASIN
BALD MTN. 9380 13.4 12.8 105 11.1 11.1 100
BEAR TRAP MEADOW 8200 5.6 3.3 170 6.4 5.3 121
BLACKWATER 9780 15.8 15.6 101 14.4 13.4 107
BONE SPRINGS DIV 9350 13.4 10.1 133 10.5 9.1 115
EVENING STAR 9200 19.5 18.6 105 20.3 16.7 122
GRAVE SPRINGS 8550 4.9 5.3 92 6.1 6.2 98
KIRWIN 9550 8.6 7.4 116 9.6 7.3 132
MARQUETTE 8760 2.6 5.7 46 5.3 6.0 88
MIDDLE POWDER 7760 6.1 6.8 90 6.4 8.0 80
OWL CREEK 8975 3.6 3.2 112 3.5 3.5 100
POWDER RIVER PASS 9480 9.0 6.9 130 10.1 7.8 129
SHELL CREEK 9580 12.1 9.4 129 11.8 8.8 134
SYLVAN LAKE 8420 12.1 14.2 85 14.4 13.9 104
SYLVAN ROAD 7120 9.6 8.3 116 12.6 12.7 99
TIMBER CREEK 7950 2.6 3.5 74 6.0 4.3 140
YOUNTS PEAK 8350 13.2 11.3 117 11.9 10.8 110
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Basin wide percent of average 107 111
SHOSHONE RIVER
BLACKWATER 9780 15.8 15.6 101 14.4 13.4 107
EVENING STAR 9200 19.5 18.6 105 20.3 16.7 122
KIRWIN 9550 8.6 7.4 116 9.6 7.3 132
MARQUETTE 8760 2.6 5.7 46 5.3 6.0 88
SYLVAN LAKE 8420 12.1 14.2 85 14.4 13.9 104
SYLVAN ROAD 7120 9.6 8.3 116 12.6 12.7 99
YOUNTS PEAK 8350 13.2 11.3 117 11.9 10.8 110
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Basin wide percent of average 100 110
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.6 3.3 170 6.4 5.3 121
BIG GOOSE 7990 5.3 5.6 95 7.5 5.2 144
BONE SPRINGS DIV 9350 13.4 10.1 133 10.5 9.1 115
BURGESS JUNCTION 7880 8.1 7.0 116 8.8 7.5 117
CLOUD PEAK RESERVOIR 9860 11.4 7.5 152 11.0 7.8 141
DOME LAKE 8880 8.2 7.6 108 10.2 8.3 123
GRAVE SPRINGS 8550 4.9 5.3 92 6.1 6.2 98
HANSEN SAWMILL 8360 4.1 4.0 102 6.6 5.1 129
MIDDLE POWDER 7760 6.1 6.8 90 6.4 8.0 80
POWDER RIVER PASS 9480 9.0 6.9 130 10.1 7.8 129
SUCKER CREEK 8880 9.8 6.7 146 11.6 8.3 140
TIE CREEK 6870 3.0 3.7 81 9.1 6.4 142
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Basin wide percent of average 119 123
BELLE FOURCHE
BLIND PARK 6890 6.4 5.0 128 10.8 7.5 144
COLE CANYON 5910 3.8 4.2 90 9.0 4.5 200
NORTH RAPID CREEK 6130 6.4 4.6 139 9.0 6.1 148
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Basin wide percent of average 120 159
UPPER N. PLATTE RIVER
COLUMBINE 9160 16.0 15.0 107 15.1 15.6 97
DIVIDE PEAK 8880 12.3 12.2 101 14.1 13.0 108
ELK RIVER 8700 14.0 11.1 126 13.7 11.9 115
JOE WRIGHT 10120 14.7 13.0 113 18.0 15.3 118
NORTH FRENCH CREEK 10130 19.1 17.4 110 18.5 15.5 119
OLD BATTLE 10000 18.5 18.7 99 22.5 21.1 107
SAGE CREEK BASIN 7850 6.1 7.1 86 7.8 7.5 104
SOUTH BRUSH CREEK 8440 8.6 6.9 125 10.4 10.2 102
TOWER 10500 25.1 28.0 90 25.3 23.9 106
WEBBER SPRINGS 9250 14.0 15.0 93 16.9 17.1 99
WILLOW CREEK PASS 9540 7.9 7.1 111 7.6 7.9 96
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Basin wide percent of average 103 107
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 12.8 14.4 89 11.9 13.5 88
CASPER MTN. 7900 5.2 8.5 61 7.8 8.5 92
DEADMAN HILL 10220 9.8 9.9 99 10.3 10.0 103
DEER PARK 9700 6.4 11.4 56 9.9 13.7 72
LAPRELE CREEK 8375 4.8 6.9 70 5.7 7.8 73
RENO HILL 8400 6.4 8.0 80 7.6 8.9 85
ROACH 9700 9.9 10.2 97 11.4 11.0 104
SAND LAKE 10050 16.1 18.8 86 14.9 15.1 99
SOUTH PASS 9040 6.9 10.7 64 8.6 11.5 75
WINDY PEAK 7900 4.4 4.2 105 5.0 6.7 75
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Basin wide percent of average 80 87
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 8.1 7.1 114 10.5 9.3 113
DIVIDE PEAK 8880 12.3 12.2 101 14.1 13.0 108
OLD BATTLE 10000 18.5 18.7 99 22.5 21.1 107
SANDSTONE RS 8150 9.0 8.8 102 11.6 11.8 98
WHISKEY PARK 8950 17.6 16.9 104 19.5 18.3 107
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Basin wide percent of average 103 106
UPPER GREEN RIVER
BIG SANDY OPENING 9080 7.7 8.9 87 7.8 8.5 92
BLIND BULL SUM 8650 16.4 17.3 95 13.7 14.5 94
EAST RIM DIVIDE 7930 5.9 7.9 75 8.7 7.6 114
ELKHART PARK G.S. 9400 8.6 8.2 105 9.8 8.5 115
GROS VENTRE SUMMIT 8750 8.8 9.0 98 10.1 8.2 123
GUNSIGHT PASS 9820 9.2 -M * 10.2 -M *
KENDALL R.S. 7740 7.6 9.2 83 9.9 9.2 108
LOOMIS PARK 8240 11.0 10.5 105 13.3 11.1 120
NEW FORK LAKE 8340 8.1 7.2 112 7.8 7.5 104
SNIDER BASIN 8060 9.2 9.1 101 10.0 10.5 95
SPRING CREEK DIVIDE 9000 16.8 16.3 103 17.5 17.3 101
TRIPLE PEAK 8500 16.3 15.6 104 18.1 15.2 119
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Basin wide percent of average 98 107
LOWER GREEN RIVER
HAMS FORK 7840 6.0 7.7 78 6.8 7.9 86
HEWINTA 9519 4.6 6.1 75 7.5 8.8 85
HICKERSON PARK 9145 1.7 4.1 41 4.3 5.0 86
HOLE-IN-ROCK 9150 2.1 3.8 55 4.2 4.6 91
INDIAN CREEK 9425 13.5 16.5 82 13.1 15.9 82
KELLEY R.S. 8180 8.5 9.9 86 10.3 13.1 79
STEEL CREEK PARK 10200 5.9 8.7 68 9.1 9.5 96
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Basin wide percent of average 74 85
UPPER BEAR RIVER
BUG LAKE 7950 7.5 12.1 62 10.5 12.2 86
HAYDEN FORK 9212 9.8 9.0 109 12.5 12.8 98
KELLEY R.S. 8180 8.5 9.9 86 10.3 13.1 79
LILY LAKE 9156 7.8 7.5 104 9.6 10.8 89
MONTE CRISTO 8960 14.2 16.6 86 15.2 15.7 97
SALT RIVER SUMMIT 7760 8.1 8.4 96 9.8 11.9 82
TRIAL LAKE 9992 13.2 14.5 91 13.0 14.9 87
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Basin wide percent of average 89 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.