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 3 , 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 8.0 8.5 94 10.4 10.7 97
COTTONWOOD CREEK 7670 11.5 10.0 115 14.7 13.9 106
GRAND TARGHEE 9260 18.0 -M * 17.2 -M *
GRANITE CREEK 6770 -M 7.9 * -M 9.8 *
GRASSY LAKE 7265 14.3 15.2 94 17.9 17.9 100
GROS VENTRE SUMMIT 8750 8.1 7.1 114 9.1 6.5 140
GUNSIGHT PASS 9820 7.1 -M * 8.1 -M *
LEWIS LAKE DIVIDE 7850 13.1 15.3 86 17.5 18.0 97
PHILLIPS BENCH 8200 13.6 13.0 105 16.0 13.9 115
SALT RIVER SUMMIT 7760 5.6 5.6 100 7.3 9.2 79
SNAKE RIVER STATION 6920 6.9 8.1 85 11.2 11.3 99
SPRING CREEK DIVIDE 9000 12.0 12.8 94 13.1 13.4 98
THUMB DIVIDE 7980 9.2 7.9 116 11.2 9.3 120
TOGWOTEE PASS 9580 14.5 12.0 121 15.8 12.4 127
TWO OCEAN PLATEAU 9240 19.3 13.8 140 15.2 13.8 110
WILLOW CREEK 8380 14.1 14.7 96 18.6 16.0 116
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Basin wide percent of average 104 107
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 11.0 11.8 93 10.0 10.3 97
BLACK BEAR 8170 16.8 17.8 94 18.7 18.2 103
CANYON 7870 6.3 6.3 100 7.0 8.0 88
FISHER CREEK 9100 18.3 16.7 110 17.5 17.6 99
MADISON PLATEAU 7750 9.9 11.6 85 11.9 12.7 94
NORTHEAST ENTRANCE 7350 4.5 5.1 88 7.0 6.6 106
PARKER PEAK 9400 12.9 10.9 118 -M 8.4 *
SYLVAN LAKE 8420 9.0 10.9 83 11.3 11.2 101
THUMB DIVIDE 7980 9.2 7.9 116 11.2 9.3 120
TWO OCEAN PLATEAU 9240 19.3 13.8 140 15.2 13.8 110
WHISKEY CREEK 6800 7.0 7.7 91 9.8 10.2 96
WHITE MILL 8700 11.6 11.4 102 11.9 13.2 90
WOLVERINE 7650 5.1 5.9 86 5.9 7.2 82
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Basin wide percent of average 102 99
WIND RIVER
BURROUGHS CREEK 8750 9.1 6.9 132 9.8 8.2 120
COLD SPRINGS 9630 4.1 4.7 87 5.8 5.8 100
DEER PARK 9700 5.8 7.0 83 9.3 11.1 84
HOBBS PARK 10100 6.5 7.8 83 6.7 6.5 103
LITTLE WARM 9370 5.6 5.5 102 7.4 6.9 107
SOUTH PASS 9040 6.4 8.3 77 8.4 9.4 89
ST. LAWRENCE ALT 8620 1.7 3.8 45 4.6 4.7 98
TOGWOTEE PASS 9580 14.5 12.0 121 15.8 12.4 127
TOWNSEND CREEK 8700 3.8 4.4 86 5.8 6.1 95
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Basin wide percent of average 95 104
BIGHORN BASIN
BALD MTN. 9380 10.4 9.9 105 9.2 8.7 106
BEAR TRAP MEADOW 8200 4.1 2.6 158 5.2 4.6 113
BLACKWATER 9780 12.6 12.3 102 11.5 11.0 105
BONE SPRINGS DIV 9350 10.1 8.0 126 7.9 7.4 107
EVENING STAR 9200 14.3 14.1 101 14.9 13.3 112
GRAVE SPRINGS 8550 3.2 4.2 76 4.6 5.0 92
KIRWIN 9550 7.6 6.0 127 8.4 6.0 140
MARQUETTE 8760 2.3 5.0 46 5.0 5.4 93
MIDDLE POWDER 7760 4.3 5.6 77 5.0 6.9 72
OWL CREEK 8975 3.3 2.7 122 3.4 3.0 113
POWDER RIVER PASS 9480 6.6 5.4 122 7.7 6.1 126
SHELL CREEK 9580 9.0 7.5 120 8.7 6.9 126
SYLVAN LAKE 8420 9.0 10.9 83 11.3 11.2 101
SYLVAN ROAD 7120 6.4 6.4 100 9.1 10.3 88
TIMBER CREEK 7950 2.4 3.0 80 4.8 3.8 126
YOUNTS PEAK 8350 10.8 8.1 133 9.8 8.4 117
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Basin wide percent of average 104 107
SHOSHONE RIVER
BLACKWATER 9780 12.6 12.3 102 11.5 11.0 105
EVENING STAR 9200 14.3 14.1 101 14.9 13.3 112
KIRWIN 9550 7.6 6.0 127 8.4 6.0 140
MARQUETTE 8760 2.3 5.0 46 5.0 5.4 93
SYLVAN LAKE 8420 9.0 10.9 83 11.3 11.2 101
SYLVAN ROAD 7120 6.4 6.4 100 9.1 10.3 88
YOUNTS PEAK 8350 10.8 8.1 133 9.8 8.4 117
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Basin wide percent of average 100 107
POWDER-TONGUE
BEAR TRAP MEADOW 8200 4.1 2.6 158 5.2 4.6 113
BIG GOOSE 7990 4.3 4.5 96 6.4 4.6 139
BONE SPRINGS DIV 9350 10.1 8.0 126 7.9 7.4 107
BURGESS JUNCTION 7880 6.3 5.6 112 7.1 6.2 115
CLOUD PEAK RESERVOIR 9860 8.5 5.8 147 8.9 6.5 137
DOME LAKE 8880 6.8 6.2 110 8.4 7.0 120
GRAVE SPRINGS 8550 3.2 4.2 76 4.6 5.0 92
HANSEN SAWMILL 8360 3.3 3.3 100 5.8 4.4 132
MIDDLE POWDER 7760 4.3 5.6 77 5.0 6.9 72
POWDER RIVER PASS 9480 6.6 5.4 122 7.7 6.1 126
SUCKER CREEK 8880 7.8 5.4 144 9.5 6.8 140
TIE CREEK 6870 2.0 2.6 77 8.1 5.2 156
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Basin wide percent of average 114 120
BELLE FOURCHE
BLIND PARK 6890 4.7 3.7 127 8.7 6.3 138
COLE CANYON 5910 3.3 3.4 97 7.2 4.0 180
NORTH RAPID CREEK 6130 5.1 3.4 150 8.2 5.4 152
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Basin wide percent of average 125 154
UPPER N. PLATTE RIVER
COLUMBINE 9160 8.6 10.4 83 9.2 11.9 77
DIVIDE PEAK 8880 8.0 9.5 84 10.3 10.3 100
ELK RIVER 8700 8.6 7.6 113 9.6 9.1 105
JOE WRIGHT 10120 10.9 9.9 110 13.5 12.2 111
NORTH FRENCH CREEK 10130 12.3 13.7 90 12.2 12.3 99
OLD BATTLE 10000 13.0 15.0 87 16.2 16.4 99
SAGE CREEK BASIN 7850 4.1 5.5 75 6.0 6.0 100
SOUTH BRUSH CREEK 8440 6.0 5.3 113 7.8 8.0 98
TOWER 10500 13.8 21.2 65 16.5 18.4 90
WEBBER SPRINGS 9250 10.1 11.8 86 12.7 13.4 95
WILLOW CREEK PASS 9540 6.0 5.7 105 6.6 6.6 100
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Basin wide percent of average 88 97
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 8.3 11.1 75 8.2 10.4 79
CASPER MTN. 7900 3.8 7.1 54 6.4 7.3 88
DEADMAN HILL 10220 6.9 7.8 88 7.4 8.0 92
DEER PARK 9700 5.8 7.0 83 9.3 11.1 84
LAPRELE CREEK 8375 -M 5.5 * -M 6.3 *
RENO HILL 8400 4.1 6.7 61 5.5 7.3 75
ROACH 9700 7.0 7.6 92 8.3 8.7 95
SAND LAKE 10050 11.2 15.3 73 10.3 11.9 87
SOUTH PASS 9040 6.4 8.3 77 8.4 9.4 89
WINDY PEAK 7900 2.4 3.5 69 3.3 5.7 58
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Basin wide percent of average 75 84
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.4 4.3 102 7.2 7.3 99
DIVIDE PEAK 8880 8.0 9.5 84 10.3 10.3 100
OLD BATTLE 10000 13.0 15.0 87 16.2 16.4 99
SANDSTONE RS 8150 5.9 5.5 107 8.3 9.2 90
WHISKEY PARK 8950 10.4 11.5 90 12.9 13.6 95
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Basin wide percent of average 91 97
UPPER GREEN RIVER
BIG SANDY OPENING 9080 6.4 7.1 90 6.7 6.7 100
BLIND BULL SUM 8650 11.9 13.5 88 11.1 11.4 97
EAST RIM DIVIDE 7930 4.4 6.1 72 7.4 5.9 125
ELKHART PARK G.S. 9400 7.3 6.5 112 8.8 6.9 128
GROS VENTRE SUMMIT 8750 8.1 7.1 114 9.1 6.5 140
GUNSIGHT PASS 9820 7.1 -M * 8.1 -M *
KENDALL R.S. 7740 6.4 6.9 93 8.8 7.1 124
LOOMIS PARK 8240 8.7 8.2 106 11.0 8.6 128
NEW FORK LAKE 8340 6.7 5.5 122 6.5 6.1 107
SNIDER BASIN 8060 6.6 7.1 93 7.7 8.2 94
SPRING CREEK DIVIDE 9000 12.0 12.8 94 13.1 13.4 98
TRIPLE PEAK 8500 12.1 12.2 99 13.6 11.6 117
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Basin wide percent of average 97 112
LOWER GREEN RIVER
HAMS FORK 7840 3.9 5.7 68 5.5 6.0 92
HEWINTA 9519 2.5 4.3 58 5.6 7.1 79
HICKERSON PARK 9145 1.2 3.0 40 3.9 4.3 91
HOLE-IN-ROCK 9150 1.7 2.7 63 3.9 3.9 100
INDIAN CREEK 9425 10.5 12.8 82 10.6 12.5 85
KELLEY R.S. 8180 6.6 7.8 85 8.3 10.4 80
STEEL CREEK PARK 10200 3.9 6.8 57 7.1 7.7 92
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Basin wide percent of average 70 87
UPPER BEAR RIVER
BUG LAKE 7950 5.0 8.6 58 7.8 9.4 83
HAYDEN FORK 9212 7.1 6.5 109 9.7 10.2 95
KELLEY R.S. 8180 6.6 7.8 85 8.3 10.4 80
LILY LAKE 9156 5.7 5.6 102 7.6 8.8 86
MONTE CRISTO 8960 10.8 11.5 94 11.9 12.4 96
SALT RIVER SUMMIT 7760 5.6 5.6 100 7.3 9.2 79
TRIAL LAKE 9992 9.8 10.8 91 10.1 11.6 87
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Basin wide percent of average 90 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.