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 SATURDAY: JANUARY 24 , 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 10.2 11.6 88 12.9 13.8 93
COTTONWOOD CREEK 7670 16.3 13.1 124 19.8 17.6 112
GRAND TARGHEE 9260 23.6 -M * 21.0 -M *
GRANITE CREEK 6770 10.1 11.2 90 14.6 12.8 114
GRASSY LAKE 7265 18.5 20.9 89 22.0 23.3 94
GROS VENTRE SUMMIT 8750 8.4 8.9 94 9.6 8.1 119
GUNSIGHT PASS 9820 8.6 -M * 9.6 -M *
LEWIS LAKE DIVIDE 7850 16.1 21.0 77 20.6 23.2 89
PHILLIPS BENCH 8200 16.4 17.0 96 18.7 18.2 103
SALT RIVER SUMMIT 7760 7.7 8.2 94 9.3 11.8 79
SNAKE RIVER STATION 6920 10.0 11.4 88 14.1 14.5 97
SPRING CREEK DIVIDE 9000 16.3 16.1 101 17.1 17.2 99
THUMB DIVIDE 7980 10.4 10.7 97 12.4 11.9 104
TOGWOTEE PASS 9580 18.3 15.6 117 20.0 15.7 127
TWO OCEAN PLATEAU 9240 23.4 17.6 133 18.0 17.3 104
WILLOW CREEK 8380 19.5 18.8 104 24.1 20.4 118
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Basin wide percent of average 100 103
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 14.5 15.2 95 13.3 13.0 102
BLACK BEAR 8170 19.5 24.1 81 21.3 24.1 88
CANYON 7870 7.7 8.3 93 8.7 10.1 86
FISHER CREEK 9100 22.8 22.2 103 21.7 22.9 95
MADISON PLATEAU 7750 11.4 15.3 75 13.5 16.2 83
NORTHEAST ENTRANCE 7350 6.3 7.1 89 8.7 8.3 105
PARKER PEAK 9400 16.0 13.9 115 11.5 10.4 111
SYLVAN LAKE 8420 11.7 14.1 83 14.0 13.8 101
THUMB DIVIDE 7980 10.4 10.7 97 12.4 11.9 104
TWO OCEAN PLATEAU 9240 23.4 17.6 133 18.0 17.3 104
WHISKEY CREEK 6800 8.2 10.4 79 11.2 12.9 87
WHITE MILL 8700 14.9 15.1 99 14.7 16.9 87
WOLVERINE 7650 7.3 8.0 91 7.5 8.6 87
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Basin wide percent of average 96 95
WIND RIVER
BURROUGHS CREEK 8750 11.3 9.5 119 12.0 10.6 113
COLD SPRINGS 9630 4.5 5.7 79 6.2 6.8 91
DEER PARK 9700 5.9 11.3 52 9.6 13.6 71
HOBBS PARK 10100 6.8 9.4 72 7.1 7.7 92
LITTLE WARM 9370 6.7 7.3 92 8.7 8.6 101
SOUTH PASS 9040 6.6 10.6 62 8.6 11.4 75
ST. LAWRENCE ALT 8620 1.7 4.6 37 4.7 5.4 87
TOGWOTEE PASS 9580 18.3 15.6 117 20.0 15.7 127
TOWNSEND CREEK 8700 4.0 5.3 75 6.2 6.9 90
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Basin wide percent of average 83 96
BIGHORN BASIN
BALD MTN. 9380 13.3 12.6 106 11.0 11.1 99
BEAR TRAP MEADOW 8200 5.5 3.3 167 6.3 5.2 121
BLACKWATER 9780 15.5 15.4 101 14.1 13.3 106
BONE SPRINGS DIV 9350 13.3 10.0 133 10.4 9.0 116
EVENING STAR 9200 19.1 18.4 104 20.1 16.5 122
GRAVE SPRINGS 8550 4.5 5.3 85 5.9 6.2 95
KIRWIN 9550 8.4 7.3 115 9.5 7.2 132
MARQUETTE 8760 2.6 5.7 46 5.3 6.0 88
MIDDLE POWDER 7760 6.0 6.8 88 6.2 7.9 78
OWL CREEK 8975 3.6 3.2 112 3.5 3.5 100
POWDER RIVER PASS 9480 8.8 6.8 129 9.9 7.8 127
SHELL CREEK 9580 11.9 9.3 128 11.7 8.7 134
SYLVAN LAKE 8420 11.7 14.1 83 14.0 13.8 101
SYLVAN ROAD 7120 9.4 8.3 113 12.3 12.6 98
TIMBER CREEK 7950 2.6 3.5 74 5.9 4.3 137
YOUNTS PEAK 8350 13.0 11.1 117 11.7 10.7 109
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Basin wide percent of average 106 110
SHOSHONE RIVER
BLACKWATER 9780 15.5 15.4 101 14.1 13.3 106
EVENING STAR 9200 19.1 18.4 104 20.1 16.5 122
KIRWIN 9550 8.4 7.3 115 9.5 7.2 132
MARQUETTE 8760 2.6 5.7 46 5.3 6.0 88
SYLVAN LAKE 8420 11.7 14.1 83 14.0 13.8 101
SYLVAN ROAD 7120 9.4 8.3 113 12.3 12.6 98
YOUNTS PEAK 8350 13.0 11.1 117 11.7 10.7 109
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Basin wide percent of average 99 109
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.5 3.3 167 6.3 5.2 121
BIG GOOSE 7990 5.2 5.6 93 7.5 5.1 147
BONE SPRINGS DIV 9350 13.3 10.0 133 10.4 9.0 116
BURGESS JUNCTION 7880 8.1 7.0 116 8.8 7.5 117
CLOUD PEAK RESERVOIR 9860 11.4 7.5 152 11.1 7.8 142
DOME LAKE 8880 8.1 7.5 108 10.1 8.2 123
GRAVE SPRINGS 8550 4.5 5.3 85 5.9 6.2 95
HANSEN SAWMILL 8360 4.0 4.0 100 6.6 5.0 132
MIDDLE POWDER 7760 6.0 6.8 88 6.2 7.9 78
POWDER RIVER PASS 9480 8.8 6.8 129 9.9 7.8 127
SUCKER CREEK 8880 9.8 6.7 146 11.5 8.2 140
TIE CREEK 6870 3.0 3.8 79 9.1 6.4 142
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Basin wide percent of average 118 123
BELLE FOURCHE
BLIND PARK 6890 6.2 4.9 127 10.8 7.4 146
COLE CANYON 5910 3.9 4.2 93 8.9 4.5 198
NORTH RAPID CREEK 6130 6.4 4.5 142 9.1 6.0 152
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Basin wide percent of average 121 161
UPPER N. PLATTE RIVER
COLUMBINE 9160 14.7 14.7 100 14.2 15.5 92
DIVIDE PEAK 8880 11.5 12.1 95 13.5 12.8 105
ELK RIVER 8700 13.3 11.0 121 13.3 11.8 113
JOE WRIGHT 10120 14.1 12.8 110 17.4 15.2 114
NORTH FRENCH CREEK 10130 17.9 17.2 104 17.3 15.3 113
OLD BATTLE 10000 17.2 18.5 93 21.3 20.9 102
SAGE CREEK BASIN 7850 5.7 7.0 81 7.5 7.4 101
SOUTH BRUSH CREEK 8440 7.9 6.8 116 9.9 10.1 98
TOWER 10500 23.5 27.6 85 24.3 23.6 103
WEBBER SPRINGS 9250 13.0 14.8 88 15.9 16.9 94
WILLOW CREEK PASS 9540 7.6 7.0 109 7.3 7.8 94
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Basin wide percent of average 98 103
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 12.0 14.2 85 11.4 13.4 85
CASPER MTN. 7900 4.9 8.5 58 7.5 8.5 88
DEADMAN HILL 10220 9.3 9.8 95 9.9 9.9 100
DEER PARK 9700 5.9 11.3 52 9.6 13.6 71
LAPRELE CREEK 8375 4.3 6.8 63 5.2 7.7 68
RENO HILL 8400 6.1 8.0 76 7.3 8.8 83
ROACH 9700 9.3 10.0 93 10.8 10.9 99
SAND LAKE 10050 15.2 18.7 81 14.0 15.0 93
SOUTH PASS 9040 6.6 10.6 62 8.6 11.4 75
WINDY PEAK 7900 4.0 4.2 95 4.5 6.6 68
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Basin wide percent of average 76 84
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 7.5 7.0 107 10.0 9.3 108
DIVIDE PEAK 8880 11.5 12.1 95 13.5 12.8 105
OLD BATTLE 10000 17.2 18.5 93 21.3 20.9 102
SANDSTONE RS 8150 8.4 8.6 98 11.0 11.7 94
WHISKEY PARK 8950 16.8 16.7 101 18.7 18.1 103
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Basin wide percent of average 98 102
UPPER GREEN RIVER
BIG SANDY OPENING 9080 7.2 8.8 82 7.3 8.4 87
BLIND BULL SUM 8650 15.6 17.2 91 13.0 14.4 90
EAST RIM DIVIDE 7930 5.5 7.8 71 8.3 7.6 109
ELKHART PARK G.S. 9400 8.2 8.2 100 9.5 8.4 113
GROS VENTRE SUMMIT 8750 8.4 8.9 94 9.6 8.1 119
GUNSIGHT PASS 9820 8.6 -M * 9.6 -M *
KENDALL R.S. 7740 7.0 9.1 77 9.4 9.1 103
LOOMIS PARK 8240 10.5 10.4 101 12.9 11.0 117
NEW FORK LAKE 8340 7.7 7.1 108 7.4 7.4 100
SNIDER BASIN 8060 9.0 9.0 100 9.8 10.4 94
SPRING CREEK DIVIDE 9000 16.3 16.1 101 17.1 17.2 99
TRIPLE PEAK 8500 15.7 15.5 101 17.5 15.1 116
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Basin wide percent of average 94 104
LOWER GREEN RIVER
HAMS FORK 7840 5.7 7.6 75 6.6 7.8 85
HEWINTA 9519 4.2 6.0 70 7.1 8.7 82
HICKERSON PARK 9145 1.6 4.0 40 4.2 4.9 86
HOLE-IN-ROCK 9150 2.1 3.7 57 4.1 4.5 91
INDIAN CREEK 9425 12.9 16.3 79 12.6 15.7 80
KELLEY R.S. 8180 7.9 9.8 81 9.8 13.0 75
STEEL CREEK PARK 10200 5.2 8.6 60 8.6 9.5 91
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Basin wide percent of average 71 83
UPPER BEAR RIVER
BUG LAKE 7950 6.9 12.0 58 9.9 12.0 82
HAYDEN FORK 9212 9.0 8.9 101 11.7 12.7 92
KELLEY R.S. 8180 7.9 9.8 81 9.8 13.0 75
LILY LAKE 9156 7.2 7.5 96 9.0 10.8 83
MONTE CRISTO 8960 13.3 16.3 82 14.4 15.6 92
SALT RIVER SUMMIT 7760 7.7 8.2 94 9.3 11.8 79
TRIAL LAKE 9992 12.0 14.3 84 12.0 14.7 82
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Basin wide percent of average 83 84
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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.