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 THURSDAY: JANUARY 15 , 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 10.3 96 12.6 12.5 101
COTTONWOOD CREEK 7670 15.5 11.8 131 19.0 16.2 117
GRAND TARGHEE 9260 22.4 -M * 20.1 -M *
GRANITE CREEK 6770 -M 9.8 * -M 11.5 *
GRASSY LAKE 7265 18.0 18.5 97 21.4 21.2 101
GROS VENTRE SUMMIT 8750 8.5 8.2 104 9.5 7.4 128
GUNSIGHT PASS 9820 8.4 -M * 9.5 -M *
LEWIS LAKE DIVIDE 7850 15.8 18.5 85 20.3 21.1 96
PHILLIPS BENCH 8200 16.1 15.3 105 18.3 16.4 112
SALT RIVER SUMMIT 7760 7.3 7.1 103 9.0 10.8 83
SNAKE RIVER STATION 6920 9.7 9.9 98 13.8 13.2 105
SPRING CREEK DIVIDE 9000 15.7 14.7 107 16.5 15.7 105
THUMB DIVIDE 7980 10.3 9.5 108 12.2 10.9 112
TOGWOTEE PASS 9580 18.0 14.1 128 19.6 14.3 137
TWO OCEAN PLATEAU 9240 22.9 16.0 143 17.4 15.9 109
WILLOW CREEK 8380 18.7 17.0 110 23.1 18.6 124
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Basin wide percent of average 109 110
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 14.6 13.9 105 13.4 11.9 113
BLACK BEAR 8170 19.0 21.4 89 20.7 21.7 95
CANYON 7870 7.6 7.5 101 8.5 9.2 92
FISHER CREEK 9100 22.7 20.2 112 21.7 20.8 104
MADISON PLATEAU 7750 11.2 13.7 82 13.2 14.7 90
NORTHEAST ENTRANCE 7350 6.4 6.4 100 8.8 7.6 116
PARKER PEAK 9400 15.9 12.6 126 12.6 9.5 133
SYLVAN LAKE 8420 11.4 12.7 90 13.9 12.7 109
THUMB DIVIDE 7980 10.3 9.5 108 12.2 10.9 112
TWO OCEAN PLATEAU 9240 22.9 16.0 143 17.4 15.9 109
WHISKEY CREEK 6800 8.0 9.2 87 11.0 11.8 93
WHITE MILL 8700 14.8 13.8 107 14.9 15.3 97
WOLVERINE 7650 7.3 7.2 101 7.5 8.0 94
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Basin wide percent of average 105 103
WIND RIVER
BURROUGHS CREEK 8750 11.2 8.6 130 12.0 9.6 125
COLD SPRINGS 9630 4.6 5.3 87 6.3 6.4 98
DEER PARK 9700 5.9 9.1 65 9.6 12.6 76
HOBBS PARK 10100 6.8 8.8 77 7.1 7.2 99
LITTLE WARM 9370 6.6 6.6 100 8.6 7.9 109
SOUTH PASS 9040 6.5 9.7 67 8.8 10.5 84
ST. LAWRENCE ALT 8620 1.9 4.3 44 4.8 5.1 94
TOGWOTEE PASS 9580 18.0 14.1 128 19.6 14.3 137
TOWNSEND CREEK 8700 4.0 5.0 80 6.0 6.6 91
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Basin wide percent of average 92 103
BIGHORN BASIN
BALD MTN. 9380 13.2 11.7 113 11.0 10.1 109
BEAR TRAP MEADOW 8200 5.6 3.0 187 6.2 4.9 127
BLACKWATER 9780 15.5 14.1 110 14.2 12.4 115
BONE SPRINGS DIV 9350 13.2 9.3 142 10.3 8.4 123
EVENING STAR 9200 19.0 16.8 113 20.0 15.2 132
GRAVE SPRINGS 8550 4.6 4.9 94 5.8 5.7 102
KIRWIN 9550 8.5 6.9 123 9.6 6.8 141
MARQUETTE 8760 2.7 5.4 50 5.6 5.7 98
MIDDLE POWDER 7760 6.1 6.3 97 6.0 7.5 80
OWL CREEK 8975 3.6 3.0 120 3.6 3.3 109
POWDER RIVER PASS 9480 8.8 6.2 142 10.0 7.1 141
SHELL CREEK 9580 11.8 8.6 137 11.4 7.8 146
SYLVAN LAKE 8420 11.4 12.7 90 13.9 12.7 109
SYLVAN ROAD 7120 9.4 7.6 124 12.3 11.7 105
TIMBER CREEK 7950 2.8 3.3 85 5.8 4.1 141
YOUNTS PEAK 8350 12.9 9.8 132 11.6 9.8 118
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Basin wide percent of average 115 118
SHOSHONE RIVER
BLACKWATER 9780 15.5 14.1 110 14.2 12.4 115
EVENING STAR 9200 19.0 16.8 113 20.0 15.2 132
KIRWIN 9550 8.5 6.9 123 9.6 6.8 141
MARQUETTE 8760 2.7 5.4 50 5.6 5.7 98
SYLVAN LAKE 8420 11.4 12.7 90 13.9 12.7 109
SYLVAN ROAD 7120 9.4 7.6 124 12.3 11.7 105
YOUNTS PEAK 8350 12.9 9.8 132 11.6 9.8 118
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Basin wide percent of average 108 117
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.6 3.0 187 6.2 4.9 127
BIG GOOSE 7990 5.5 5.2 106 7.7 4.8 160
BONE SPRINGS DIV 9350 13.2 9.3 142 10.3 8.4 123
BURGESS JUNCTION 7880 8.2 6.4 128 8.9 6.9 129
CLOUD PEAK RESERVOIR 9860 11.3 6.9 164 11.0 7.2 153
DOME LAKE 8880 8.1 7.0 116 10.0 7.7 130
GRAVE SPRINGS 8550 4.6 4.9 94 5.8 5.7 102
HANSEN SAWMILL 8360 4.2 3.7 114 6.8 4.7 145
MIDDLE POWDER 7760 6.1 6.3 97 6.0 7.5 80
POWDER RIVER PASS 9480 8.8 6.2 142 10.0 7.1 141
SUCKER CREEK 8880 9.7 6.2 156 11.4 7.6 150
TIE CREEK 6870 3.2 3.5 91 9.5 5.9 161
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Basin wide percent of average 129 132
BELLE FOURCHE
BLIND PARK 6890 6.3 4.5 140 10.7 7.0 153
COLE CANYON 5910 4.2 3.8 111 8.4 4.3 195
NORTH RAPID CREEK 6130 6.4 4.0 160 9.3 5.8 160
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Basin wide percent of average 137 166
UPPER N. PLATTE RIVER
COLUMBINE 9160 13.3 12.8 104 13.1 14.0 94
DIVIDE PEAK 8880 10.0 11.1 90 12.2 11.8 103
ELK RIVER 8700 12.2 9.5 128 12.3 10.7 115
JOE WRIGHT 10120 13.0 11.6 112 16.3 13.9 117
NORTH FRENCH CREEK 10130 16.1 15.8 102 15.6 14.1 111
OLD BATTLE 10000 15.6 17.0 92 19.6 19.1 103
SAGE CREEK BASIN 7850 5.0 6.4 78 6.8 6.9 99
SOUTH BRUSH CREEK 8440 7.2 6.1 118 9.0 9.2 98
TOWER 10500 -M 24.8 * -M 21.5 *
WEBBER SPRINGS 9250 12.1 13.5 90 15.0 15.6 96
WILLOW CREEK PASS 9540 7.0 6.4 109 7.2 7.3 99
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Basin wide percent of average 101 104
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 11.2 12.9 87 10.8 12.2 89
CASPER MTN. 7900 4.8 7.9 61 7.4 8.0 92
DEADMAN HILL 10220 8.8 9.0 98 9.4 9.1 103
DEER PARK 9700 5.9 9.1 65 9.6 12.6 76
LAPRELE CREEK 8375 3.6 6.3 57 4.6 7.1 65
RENO HILL 8400 5.7 7.5 76 7.0 8.2 85
ROACH 9700 9.0 9.0 100 10.5 10.0 105
SAND LAKE 10050 14.1 17.2 82 12.9 13.8 93
SOUTH PASS 9040 6.5 9.7 67 8.8 10.5 84
WINDY PEAK 7900 3.3 3.9 85 3.9 6.2 63
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Basin wide percent of average 79 87
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 6.2 5.8 107 9.0 8.5 106
DIVIDE PEAK 8880 10.0 11.1 90 12.2 11.8 103
OLD BATTLE 10000 15.6 17.0 92 19.6 19.1 103
SANDSTONE RS 8150 7.6 7.3 104 10.1 10.7 94
WHISKEY PARK 8950 15.0 14.4 104 17.1 16.4 104
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Basin wide percent of average 98 102
UPPER GREEN RIVER
BIG SANDY OPENING 9080 6.9 8.1 85 7.1 7.7 92
BLIND BULL SUM 8650 15.4 15.7 98 12.8 13.2 97
EAST RIM DIVIDE 7930 5.3 7.1 75 8.2 6.9 119
ELKHART PARK G.S. 9400 8.1 7.4 109 9.3 7.8 119
GROS VENTRE SUMMIT 8750 8.5 8.2 104 9.5 7.4 128
GUNSIGHT PASS 9820 8.4 -M * 9.5 -M *
KENDALL R.S. 7740 6.9 8.2 84 9.3 8.3 112
LOOMIS PARK 8240 10.3 9.5 108 12.6 10.0 126
NEW FORK LAKE 8340 7.6 6.4 119 7.5 6.9 109
SNIDER BASIN 8060 8.7 8.2 106 9.6 9.5 101
SPRING CREEK DIVIDE 9000 15.7 14.7 107 16.5 15.7 105
TRIPLE PEAK 8500 15.5 14.1 110 17.2 13.6 126
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Basin wide percent of average 101 112
LOWER GREEN RIVER
HAMS FORK 7840 5.1 6.8 75 6.1 7.1 86
HEWINTA 9519 3.9 5.2 75 6.7 8.0 84
HICKERSON PARK 9145 1.6 3.6 44 4.2 4.6 91
HOLE-IN-ROCK 9150 2.0 3.3 61 4.1 4.3 95
INDIAN CREEK 9425 12.3 14.9 83 12.0 14.5 83
KELLEY R.S. 8180 7.4 9.0 82 9.1 12.0 76
STEEL CREEK PARK 10200 5.2 7.8 67 8.4 8.7 97
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Basin wide percent of average 74 85
UPPER BEAR RIVER
BUG LAKE 7950 6.2 10.5 59 9.2 11.0 84
HAYDEN FORK 9212 8.4 7.9 106 11.1 11.7 95
KELLEY R.S. 8180 7.4 9.0 82 9.1 12.0 76
LILY LAKE 9156 6.7 6.7 100 8.6 9.9 87
MONTE CRISTO 8960 12.7 14.2 89 13.6 14.3 95
SALT RIVER SUMMIT 7760 7.3 7.1 103 9.0 10.8 83
TRIAL LAKE 9992 11.2 12.8 87 11.2 13.4 84
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Basin wide percent of average 88 86
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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.