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 MONDAY: JANUARY 12 , 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 9.9 9.8 101 12.5 12.1 103
COTTONWOOD CREEK 7670 15.1 11.4 132 18.5 15.6 119
GRAND TARGHEE 9260 22.3 -M * 19.8 -M *
GRANITE CREEK 6770 -M 9.3 * -M 11.1 *
GRASSY LAKE 7265 17.8 17.6 101 21.2 20.4 104
GROS VENTRE SUMMIT 8750 8.6 7.9 109 9.5 7.2 132
GUNSIGHT PASS 9820 8.3 -M * 9.3 -M *
LEWIS LAKE DIVIDE 7850 15.7 17.7 89 20.2 20.4 99
PHILLIPS BENCH 8200 16.1 14.8 109 18.3 15.8 116
SALT RIVER SUMMIT 7760 7.3 6.7 109 8.9 10.4 86
SNAKE RIVER STATION 6920 9.5 9.5 100 13.7 12.7 108
SPRING CREEK DIVIDE 9000 15.2 14.3 106 16.1 15.2 106
THUMB DIVIDE 7980 10.3 9.1 113 12.1 10.5 115
TOGWOTEE PASS 9580 17.9 13.5 133 19.3 13.9 139
TWO OCEAN PLATEAU 9240 22.6 15.4 147 17.0 15.4 110
WILLOW CREEK 8380 18.3 16.5 111 22.8 18.0 127
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Basin wide percent of average 112 112
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 14.2 13.5 105 13.0 11.5 113
BLACK BEAR 8170 18.9 20.5 92 20.6 20.8 99
CANYON 7870 7.5 7.3 103 8.4 8.9 94
FISHER CREEK 9100 22.4 19.4 115 21.2 20.0 106
MADISON PLATEAU 7750 11.1 13.4 83 13.1 14.2 92
NORTHEAST ENTRANCE 7350 6.3 6.1 103 8.7 7.3 119
PARKER PEAK 9400 15.7 12.3 128 12.3 9.2 134
SYLVAN LAKE 8420 11.3 12.4 91 13.7 12.4 110
THUMB DIVIDE 7980 10.3 9.1 113 12.1 10.5 115
TWO OCEAN PLATEAU 9240 22.6 15.4 147 17.0 15.4 110
WHISKEY CREEK 6800 8.0 8.9 90 10.9 11.4 96
WHITE MILL 8700 14.7 13.2 111 14.8 14.8 100
WOLVERINE 7650 7.6 7.0 109 7.4 7.8 95
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Basin wide percent of average 108 105
WIND RIVER
BURROUGHS CREEK 8750 11.2 8.3 135 11.9 9.3 128
COLD SPRINGS 9630 4.5 5.1 88 6.2 6.3 98
DEER PARK 9700 5.8 9.0 64 9.5 12.2 78
HOBBS PARK 10100 6.7 8.5 79 7.0 7.1 99
LITTLE WARM 9370 6.6 6.4 103 8.5 7.7 110
SOUTH PASS 9040 6.5 9.5 68 8.6 10.2 84
ST. LAWRENCE ALT 8620 1.8 4.2 43 4.6 5.0 92
TOGWOTEE PASS 9580 17.9 13.5 133 19.3 13.9 139
TOWNSEND CREEK 8700 4.0 4.9 82 5.9 6.5 91
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Basin wide percent of average 94 104
BIGHORN BASIN
BALD MTN. 9380 12.6 11.3 112 10.6 9.7 109
BEAR TRAP MEADOW 8200 5.3 2.9 183 6.0 4.8 125
BLACKWATER 9780 15.3 13.7 112 14.0 12.0 117
BONE SPRINGS DIV 9350 12.4 9.0 138 9.6 8.1 119
EVENING STAR 9200 18.7 16.3 115 19.5 14.8 132
GRAVE SPRINGS 8550 4.1 4.8 85 5.3 5.5 96
KIRWIN 9550 8.3 6.7 124 9.4 6.6 142
MARQUETTE 8760 2.6 5.3 49 5.5 5.6 98
MIDDLE POWDER 7760 5.6 6.2 90 5.7 7.3 78
OWL CREEK 8975 3.4 2.9 117 3.5 3.2 109
POWDER RIVER PASS 9480 8.6 6.0 143 9.8 6.8 144
SHELL CREEK 9580 11.6 8.3 140 11.3 7.6 149
SYLVAN LAKE 8420 11.3 12.4 91 13.7 12.4 110
SYLVAN ROAD 7120 9.3 7.3 127 12.2 11.4 107
TIMBER CREEK 7950 2.5 3.2 78 5.5 4.0 138
YOUNTS PEAK 8350 12.9 9.5 136 11.5 9.5 121
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Basin wide percent of average 115 118
SHOSHONE RIVER
BLACKWATER 9780 15.3 13.7 112 14.0 12.0 117
EVENING STAR 9200 18.7 16.3 115 19.5 14.8 132
KIRWIN 9550 8.3 6.7 124 9.4 6.6 142
MARQUETTE 8760 2.6 5.3 49 5.5 5.6 98
SYLVAN LAKE 8420 11.3 12.4 91 13.7 12.4 110
SYLVAN ROAD 7120 9.3 7.3 127 12.2 11.4 107
YOUNTS PEAK 8350 12.9 9.5 136 11.5 9.5 121
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Basin wide percent of average 110 119
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.3 2.9 183 6.0 4.8 125
BIG GOOSE 7990 4.9 5.0 98 7.1 4.8 148
BONE SPRINGS DIV 9350 12.4 9.0 138 9.6 8.1 119
BURGESS JUNCTION 7880 7.3 6.2 118 8.0 6.8 118
CLOUD PEAK RESERVOIR 9860 10.4 6.7 155 10.6 7.0 151
DOME LAKE 8880 7.6 6.8 112 9.5 7.5 127
GRAVE SPRINGS 8550 4.1 4.8 85 5.3 5.5 96
HANSEN SAWMILL 8360 4.0 3.6 111 6.7 4.6 146
MIDDLE POWDER 7760 5.6 6.2 90 5.7 7.3 78
POWDER RIVER PASS 9480 8.6 6.0 143 9.8 6.8 144
SUCKER CREEK 8880 8.8 5.9 149 10.6 7.4 143
TIE CREEK 6870 2.7 3.3 82 8.9 5.7 156
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Basin wide percent of average 123 128
BELLE FOURCHE
BLIND PARK 6890 5.8 4.2 138 10.2 6.8 150
COLE CANYON 5910 4.0 3.7 108 8.4 4.2 200
NORTH RAPID CREEK 6130 6.2 3.9 159 9.0 5.7 158
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Basin wide percent of average 136 165
UPPER N. PLATTE RIVER
COLUMBINE 9160 11.9 12.2 98 11.7 13.5 87
DIVIDE PEAK 8880 10.0 10.7 93 12.0 11.4 105
ELK RIVER 8700 11.7 9.0 130 11.9 10.3 116
JOE WRIGHT 10120 12.4 11.1 112 15.5 13.5 115
NORTH FRENCH CREEK 10130 15.3 15.3 100 14.9 13.6 110
OLD BATTLE 10000 15.3 16.5 93 19.1 18.5 103
SAGE CREEK BASIN 7850 4.9 6.2 79 6.7 6.6 102
SOUTH BRUSH CREEK 8440 7.1 5.9 120 8.8 8.9 99
TOWER 10500 -M 23.9 * -M 20.7 *
WEBBER SPRINGS 9250 11.9 13.1 91 14.6 15.0 97
WILLOW CREEK PASS 9540 6.7 6.2 108 7.0 7.1 99
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Basin wide percent of average 101 103
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 10.5 12.5 84 10.1 11.7 86
CASPER MTN. 7900 4.4 7.7 57 7.1 7.8 91
DEADMAN HILL 10220 8.2 8.7 94 8.7 8.8 99
DEER PARK 9700 5.8 9.0 64 9.5 12.2 78
LAPRELE CREEK 8375 -M 6.1 * -M 6.9 *
RENO HILL 8400 5.2 7.3 71 6.4 8.0 80
ROACH 9700 8.2 8.6 95 9.7 9.7 100
SAND LAKE 10050 13.3 16.7 80 12.3 13.3 92
SOUTH PASS 9040 6.5 9.5 68 8.6 10.2 84
WINDY PEAK 7900 3.0 3.8 79 3.6 6.1 59
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Basin wide percent of average 78 87
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 6.2 5.5 113 8.8 8.2 107
DIVIDE PEAK 8880 10.0 10.7 93 12.0 11.4 105
OLD BATTLE 10000 15.3 16.5 93 19.1 18.5 103
SANDSTONE RS 8150 7.6 6.8 112 10.0 10.3 97
WHISKEY PARK 8950 14.3 13.6 105 16.5 15.6 106
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Basin wide percent of average 101 104
UPPER GREEN RIVER
BIG SANDY OPENING 9080 7.0 7.8 90 7.3 7.5 97
BLIND BULL SUM 8650 15.0 15.1 99 12.7 12.8 99
EAST RIM DIVIDE 7930 5.3 6.8 78 8.2 6.7 122
ELKHART PARK G.S. 9400 7.9 7.2 110 9.3 7.6 122
GROS VENTRE SUMMIT 8750 8.6 7.9 109 9.5 7.2 132
GUNSIGHT PASS 9820 8.3 -M * 9.3 -M *
KENDALL R.S. 7740 6.9 7.9 87 9.3 8.0 116
LOOMIS PARK 8240 10.3 9.2 112 12.6 9.7 130
NEW FORK LAKE 8340 7.5 6.2 121 7.4 6.7 110
SNIDER BASIN 8060 8.6 7.9 109 9.4 9.2 102
SPRING CREEK DIVIDE 9000 15.2 14.3 106 16.1 15.2 106
TRIPLE PEAK 8500 15.3 13.6 112 17.0 13.1 130
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Basin wide percent of average 104 115
LOWER GREEN RIVER
HAMS FORK 7840 5.1 6.5 78 6.2 6.8 91
HEWINTA 9519 3.8 5.0 76 6.6 7.8 85
HICKERSON PARK 9145 1.5 3.4 44 4.1 4.5 91
HOLE-IN-ROCK 9150 2.0 3.1 65 4.0 4.2 95
INDIAN CREEK 9425 12.1 14.4 84 11.9 14.0 85
KELLEY R.S. 8180 7.4 8.7 85 9.2 11.7 79
STEEL CREEK PARK 10200 5.1 7.6 67 8.3 8.5 98
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Basin wide percent of average 76 87
UPPER BEAR RIVER
BUG LAKE 7950 6.3 10.1 62 9.2 10.6 87
HAYDEN FORK 9212 8.5 7.5 113 11.1 11.4 97
KELLEY R.S. 8180 7.4 8.7 85 9.2 11.7 79
LILY LAKE 9156 6.8 6.4 106 8.6 9.7 89
MONTE CRISTO 8960 12.6 13.5 93 13.6 13.8 99
SALT RIVER SUMMIT 7760 7.3 6.7 109 8.9 10.4 86
TRIAL LAKE 9992 11.2 12.3 91 11.1 13.0 85
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Basin wide percent of average 92 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.