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 FRIDAY: JANUARY 9 , 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 9.7 9.4 103 12.2 11.6 105
COTTONWOOD CREEK 7670 14.3 10.9 131 17.6 15.1 117
GRAND TARGHEE 9260 21.5 -M * 19.4 -M *
GRANITE CREEK 6770 -M 8.9 * -M 10.7 *
GRASSY LAKE 7265 16.9 16.8 101 20.4 19.6 104
GROS VENTRE SUMMIT 8750 8.5 7.6 112 9.4 7.0 134
GUNSIGHT PASS 9820 8.1 -M * 9.1 -M *
LEWIS LAKE DIVIDE 7850 15.2 16.8 90 19.7 19.6 101
PHILLIPS BENCH 8200 15.4 14.2 108 17.7 15.2 116
SALT RIVER SUMMIT 7760 6.9 6.3 110 8.6 10.1 85
SNAKE RIVER STATION 6920 9.0 9.0 100 13.2 12.3 107
SPRING CREEK DIVIDE 9000 14.6 13.8 106 15.5 14.6 106
THUMB DIVIDE 7980 10.1 8.7 116 12.0 10.1 119
TOGWOTEE PASS 9580 17.2 13.0 132 18.6 13.4 139
TWO OCEAN PLATEAU 9240 21.7 14.9 146 16.7 14.9 112
WILLOW CREEK 8380 17.5 15.9 110 22.0 17.3 127
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Basin wide percent of average 113 113
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 13.5 12.7 106 12.4 11.1 112
BLACK BEAR 8170 18.2 19.5 93 20.0 19.9 101
CANYON 7870 7.1 6.9 103 8.0 8.6 93
FISHER CREEK 9100 21.7 18.3 119 20.5 19.2 107
MADISON PLATEAU 7750 10.7 12.6 85 12.8 13.7 93
NORTHEAST ENTRANCE 7350 6.0 5.7 105 8.4 7.1 118
PARKER PEAK 9400 15.1 11.7 129 11.9 8.9 134
SYLVAN LAKE 8420 10.8 11.7 92 13.2 12.0 110
THUMB DIVIDE 7980 10.1 8.7 116 12.0 10.1 119
TWO OCEAN PLATEAU 9240 21.7 14.9 146 16.7 14.9 112
WHISKEY CREEK 6800 7.6 8.5 89 10.5 11.0 95
WHITE MILL 8700 14.1 12.5 113 14.3 14.2 101
WOLVERINE 7650 7.0 6.5 108 7.0 7.6 92
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Basin wide percent of average 109 106
WIND RIVER
BURROUGHS CREEK 8750 10.7 7.7 139 11.5 8.9 129
COLD SPRINGS 9630 4.5 4.9 92 6.2 6.1 102
DEER PARK 9700 5.7 7.3 78 9.4 11.9 79
HOBBS PARK 10100 6.6 8.1 81 7.0 6.9 101
LITTLE WARM 9370 6.5 6.0 108 8.4 7.4 114
SOUTH PASS 9040 6.4 8.9 72 8.4 9.9 85
ST. LAWRENCE ALT 8620 1.8 4.0 45 4.7 4.9 96
TOGWOTEE PASS 9580 17.2 13.0 132 18.6 13.4 139
TOWNSEND CREEK 8700 4.0 4.7 85 6.0 6.3 95
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Basin wide percent of average 98 106
BIGHORN BASIN
BALD MTN. 9380 12.3 10.8 114 10.5 9.4 112
BEAR TRAP MEADOW 8200 5.2 2.8 186 5.9 4.7 126
BLACKWATER 9780 15.1 13.1 115 13.7 11.7 117
BONE SPRINGS DIV 9350 12.0 8.6 140 9.4 7.9 119
EVENING STAR 9200 18.1 15.3 118 18.9 14.3 132
GRAVE SPRINGS 8550 3.5 4.6 76 4.9 5.3 92
KIRWIN 9550 8.2 6.4 128 9.2 6.4 144
MARQUETTE 8760 2.5 5.2 48 5.6 5.5 102
MIDDLE POWDER 7760 4.9 5.9 83 5.5 7.2 76
OWL CREEK 8975 3.4 2.8 121 3.5 3.1 113
POWDER RIVER PASS 9480 8.4 5.8 145 9.7 6.6 147
SHELL CREEK 9580 11.4 8.0 142 11.1 7.3 152
SYLVAN LAKE 8420 10.8 11.7 92 13.2 12.0 110
SYLVAN ROAD 7120 8.8 6.9 128 11.7 11.0 106
TIMBER CREEK 7950 2.5 3.1 81 5.5 3.9 141
YOUNTS PEAK 8350 12.6 9.0 140 11.3 9.1 124
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Basin wide percent of average 116 119
SHOSHONE RIVER
BLACKWATER 9780 15.1 13.1 115 13.7 11.7 117
EVENING STAR 9200 18.1 15.3 118 18.9 14.3 132
KIRWIN 9550 8.2 6.4 128 9.2 6.4 144
MARQUETTE 8760 2.5 5.2 48 5.6 5.5 102
SYLVAN LAKE 8420 10.8 11.7 92 13.2 12.0 110
SYLVAN ROAD 7120 8.8 6.9 128 11.7 11.0 106
YOUNTS PEAK 8350 12.6 9.0 140 11.3 9.1 124
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Basin wide percent of average 113 119
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.2 2.8 186 5.9 4.7 126
BIG GOOSE 7990 4.7 4.8 98 6.9 4.7 147
BONE SPRINGS DIV 9350 12.0 8.6 140 9.4 7.9 119
BURGESS JUNCTION 7880 6.8 6.0 113 7.6 6.6 115
CLOUD PEAK RESERVOIR 9860 9.7 6.3 154 10.0 6.9 145
DOME LAKE 8880 7.4 6.5 114 9.2 7.3 126
GRAVE SPRINGS 8550 3.5 4.6 76 4.9 5.3 92
HANSEN SAWMILL 8360 3.9 3.4 115 6.6 4.5 147
MIDDLE POWDER 7760 4.9 5.9 83 5.5 7.2 76
POWDER RIVER PASS 9480 8.4 5.8 145 9.7 6.6 147
SUCKER CREEK 8880 8.4 5.7 147 10.3 7.2 143
TIE CREEK 6870 2.4 3.0 80 8.5 5.5 155
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Basin wide percent of average 122 127
BELLE FOURCHE
BLIND PARK 6890 5.8 4.1 141 9.8 6.6 148
COLE CANYON 5910 4.1 3.6 114 7.9 4.1 193
NORTH RAPID CREEK 6130 5.8 3.7 157 9.0 5.6 161
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Basin wide percent of average 138 164
UPPER N. PLATTE RIVER
COLUMBINE 9160 10.8 11.6 93 10.9 12.9 84
DIVIDE PEAK 8880 9.4 10.3 91 11.6 11.1 105
ELK RIVER 8700 10.7 8.5 126 11.3 9.9 114
JOE WRIGHT 10120 11.8 10.7 110 14.8 13.1 113
NORTH FRENCH CREEK 10130 14.1 14.8 95 13.9 13.2 105
OLD BATTLE 10000 14.6 16.0 91 18.3 17.8 103
SAGE CREEK BASIN 7850 4.7 6.0 78 6.5 6.4 102
SOUTH BRUSH CREEK 8440 6.4 5.7 112 8.3 8.6 97
TOWER 10500 -M 23.0 * -M 19.9 *
WEBBER SPRINGS 9250 11.2 12.6 89 14.0 14.5 97
WILLOW CREEK PASS 9540 6.5 6.1 107 6.9 6.9 100
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Basin wide percent of average 98 102
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 10.0 12.0 83 9.4 11.3 83
CASPER MTN. 7900 4.1 7.5 55 6.8 7.6 89
DEADMAN HILL 10220 7.8 8.4 93 8.3 8.6 97
DEER PARK 9700 5.7 7.3 78 9.4 11.9 79
LAPRELE CREEK 8375 -M 5.9 * -M 6.7 *
RENO HILL 8400 4.5 7.1 63 6.0 7.7 78
ROACH 9700 7.8 8.2 95 9.3 9.4 99
SAND LAKE 10050 12.3 16.3 75 11.3 12.8 88
SOUTH PASS 9040 6.4 8.9 72 8.4 9.9 85
WINDY PEAK 7900 2.5 3.7 68 3.5 6.0 58
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Basin wide percent of average 77 85
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.5 5.1 108 8.4 7.9 106
DIVIDE PEAK 8880 9.4 10.3 91 11.6 11.1 105
OLD BATTLE 10000 14.6 16.0 91 18.3 17.8 103
SANDSTONE RS 8150 7.1 6.4 111 9.5 9.9 96
WHISKEY PARK 8950 13.2 12.9 102 15.5 14.9 104
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Basin wide percent of average 98 103
UPPER GREEN RIVER
BIG SANDY OPENING 9080 7.0 7.6 92 7.2 7.2 100
BLIND BULL SUM 8650 14.3 14.6 98 12.4 12.3 101
EAST RIM DIVIDE 7930 5.2 6.6 79 8.1 6.4 127
ELKHART PARK G.S. 9400 7.8 7.0 111 9.3 7.3 127
GROS VENTRE SUMMIT 8750 8.5 7.6 112 9.4 7.0 134
GUNSIGHT PASS 9820 8.1 -M * 9.1 -M *
KENDALL R.S. 7740 6.9 7.5 92 9.3 7.7 121
LOOMIS PARK 8240 10.1 8.9 113 12.4 9.3 133
NEW FORK LAKE 8340 7.4 6.0 123 7.3 6.5 112
SNIDER BASIN 8060 8.3 7.6 109 9.2 8.9 103
SPRING CREEK DIVIDE 9000 14.6 13.8 106 15.5 14.6 106
TRIPLE PEAK 8500 14.6 13.2 111 16.3 12.6 129
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Basin wide percent of average 104 117
LOWER GREEN RIVER
HAMS FORK 7840 4.8 6.2 77 6.1 6.5 94
HEWINTA 9519 3.5 4.7 74 6.5 7.6 86
HICKERSON PARK 9145 1.5 3.3 45 4.1 4.4 93
HOLE-IN-ROCK 9150 2.0 3.0 67 4.1 4.1 100
INDIAN CREEK 9425 11.7 13.9 84 11.5 13.5 85
KELLEY R.S. 8180 7.2 8.4 86 9.1 11.3 81
STEEL CREEK PARK 10200 4.8 7.3 66 8.1 8.2 99
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Basin wide percent of average 76 89
UPPER BEAR RIVER
BUG LAKE 7950 6.3 9.6 66 9.1 10.2 89
HAYDEN FORK 9212 8.3 7.2 115 10.9 11.0 99
KELLEY R.S. 8180 7.2 8.4 86 9.1 11.3 81
LILY LAKE 9156 6.5 6.2 105 8.3 9.4 88
MONTE CRISTO 8960 12.4 12.8 97 13.4 13.4 100
SALT RIVER SUMMIT 7760 6.9 6.3 110 8.6 10.1 85
TRIAL LAKE 9992 10.9 11.8 92 11.0 12.5 88
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Basin wide percent of average 94 90
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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.