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 TUESDAY: JANUARY 13 , 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 10.0 99 12.5 12.2 102
COTTONWOOD CREEK 7670 15.6 11.5 136 19.0 15.8 120
GRAND TARGHEE 9260 22.4 -M * 19.9 -M *
GRANITE CREEK 6770 -M 9.5 * -M 11.3 *
GRASSY LAKE 7265 17.9 17.9 100 21.4 20.7 103
GROS VENTRE SUMMIT 8750 8.5 8.0 106 9.5 7.3 130
GUNSIGHT PASS 9820 8.4 -M * 9.4 -M *
LEWIS LAKE DIVIDE 7850 15.8 17.9 88 20.3 20.6 99
PHILLIPS BENCH 8200 16.1 15.0 107 18.3 16.0 114
SALT RIVER SUMMIT 7760 7.3 6.8 107 9.0 10.6 85
SNAKE RIVER STATION 6920 9.6 9.6 100 13.8 12.9 107
SPRING CREEK DIVIDE 9000 15.6 14.4 108 16.4 15.4 106
THUMB DIVIDE 7980 10.4 9.2 113 12.2 10.7 114
TOGWOTEE PASS 9580 18.0 13.7 131 19.5 14.0 139
TWO OCEAN PLATEAU 9240 22.8 15.6 146 17.3 15.5 112
WILLOW CREEK 8380 18.7 16.7 112 23.1 18.2 127
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Basin wide percent of average 112 112
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 14.5 13.6 107 13.3 11.6 115
BLACK BEAR 8170 19.0 20.8 91 20.7 21.1 98
CANYON 7870 7.6 7.4 103 8.6 9.0 96
FISHER CREEK 9100 22.6 19.6 115 21.5 20.3 106
MADISON PLATEAU 7750 11.2 13.4 84 13.2 14.4 92
NORTHEAST ENTRANCE 7350 6.4 6.2 103 8.8 7.4 119
PARKER PEAK 9400 15.9 12.4 128 12.6 9.3 135
SYLVAN LAKE 8420 11.4 12.5 91 13.9 12.5 111
THUMB DIVIDE 7980 10.4 9.2 113 12.2 10.7 114
TWO OCEAN PLATEAU 9240 22.8 15.6 146 17.3 15.5 112
WHISKEY CREEK 6800 8.0 9.0 89 10.9 11.6 94
WHITE MILL 8700 14.8 13.3 111 14.9 15.0 99
WOLVERINE 7650 7.5 7.0 107 7.5 7.9 95
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Basin wide percent of average 108 105
WIND RIVER
BURROUGHS CREEK 8750 11.2 8.4 133 12.0 9.4 128
COLD SPRINGS 9630 4.6 5.2 88 6.3 6.3 100
DEER PARK 9700 5.8 9.1 64 9.5 12.4 77
HOBBS PARK 10100 6.9 8.6 80 7.2 7.1 101
LITTLE WARM 9370 6.6 6.5 102 8.5 7.8 109
SOUTH PASS 9040 6.6 9.5 69 8.9 10.3 86
ST. LAWRENCE ALT 8620 1.9 4.2 45 4.8 5.0 96
TOGWOTEE PASS 9580 18.0 13.7 131 19.5 14.0 139
TOWNSEND CREEK 8700 4.0 4.9 82 6.0 6.5 92
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Basin wide percent of average 94 105
BIGHORN BASIN
BALD MTN. 9380 12.8 11.4 112 10.8 9.9 109
BEAR TRAP MEADOW 8200 5.3 2.9 183 6.1 4.9 124
BLACKWATER 9780 15.5 13.8 112 14.1 12.1 117
BONE SPRINGS DIV 9350 12.9 9.0 143 10.0 8.2 122
EVENING STAR 9200 18.9 16.4 115 19.7 14.9 132
GRAVE SPRINGS 8550 4.4 4.8 92 5.7 5.6 102
KIRWIN 9550 8.4 6.8 124 9.5 6.7 142
MARQUETTE 8760 2.8 5.3 53 5.8 5.7 102
MIDDLE POWDER 7760 5.9 6.2 95 5.9 7.4 80
OWL CREEK 8975 3.6 2.9 124 3.6 3.2 112
POWDER RIVER PASS 9480 8.6 6.1 141 9.8 6.9 142
SHELL CREEK 9580 11.7 8.4 139 11.3 7.7 147
SYLVAN LAKE 8420 11.4 12.5 91 13.9 12.5 111
SYLVAN ROAD 7120 9.4 7.4 127 12.3 11.5 107
TIMBER CREEK 7950 2.8 3.3 85 5.8 4.0 145
YOUNTS PEAK 8350 12.9 9.6 134 11.6 9.6 121
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Basin wide percent of average 116 119
SHOSHONE RIVER
BLACKWATER 9780 15.5 13.8 112 14.1 12.1 117
EVENING STAR 9200 18.9 16.4 115 19.7 14.9 132
KIRWIN 9550 8.4 6.8 124 9.5 6.7 142
MARQUETTE 8760 2.8 5.3 53 5.8 5.7 102
SYLVAN LAKE 8420 11.4 12.5 91 13.9 12.5 111
SYLVAN ROAD 7120 9.4 7.4 127 12.3 11.5 107
YOUNTS PEAK 8350 12.9 9.6 134 11.6 9.6 121
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Basin wide percent of average 110 119
POWDER-TONGUE
BEAR TRAP MEADOW 8200 5.3 2.9 183 6.1 4.9 124
BIG GOOSE 7990 5.2 5.1 102 7.4 4.8 154
BONE SPRINGS DIV 9350 12.9 9.0 143 10.0 8.2 122
BURGESS JUNCTION 7880 7.9 6.2 127 8.6 6.8 126
CLOUD PEAK RESERVOIR 9860 10.9 6.7 163 10.8 7.1 152
DOME LAKE 8880 7.9 6.8 116 9.8 7.6 129
GRAVE SPRINGS 8550 4.4 4.8 92 5.7 5.6 102
HANSEN SAWMILL 8360 4.1 3.6 114 6.7 4.7 143
MIDDLE POWDER 7760 5.9 6.2 95 5.9 7.4 80
POWDER RIVER PASS 9480 8.6 6.1 141 9.8 6.9 142
SUCKER CREEK 8880 9.4 6.0 157 11.1 7.5 148
TIE CREEK 6870 3.0 3.4 88 9.2 5.8 159
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Basin wide percent of average 128 131
BELLE FOURCHE
BLIND PARK 6890 5.8 4.4 132 10.2 6.9 148
COLE CANYON 5910 4.0 3.7 108 8.5 4.2 202
NORTH RAPID CREEK 6130 6.2 3.9 159 9.0 5.7 158
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Basin wide percent of average 133 165
UPPER N. PLATTE RIVER
COLUMBINE 9160 13.1 12.4 106 12.9 13.6 95
DIVIDE PEAK 8880 10.1 10.8 94 12.1 11.6 104
ELK RIVER 8700 12.2 9.2 133 12.2 10.5 116
JOE WRIGHT 10120 13.0 11.3 115 16.1 13.6 118
NORTH FRENCH CREEK 10130 15.9 15.4 103 15.4 13.8 112
OLD BATTLE 10000 15.7 16.6 95 19.6 18.7 105
SAGE CREEK BASIN 7850 5.0 6.3 79 6.8 6.7 101
SOUTH BRUSH CREEK 8440 7.2 6.0 120 9.0 9.0 100
TOWER 10500 -M 24.2 * -M 20.9 *
WEBBER SPRINGS 9250 12.1 13.2 92 14.9 15.2 98
WILLOW CREEK PASS 9540 6.9 6.3 110 7.2 7.1 101
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Basin wide percent of average 103 105
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 11.0 12.6 87 10.7 11.9 90
CASPER MTN. 7900 4.7 7.7 61 7.3 7.9 92
DEADMAN HILL 10220 8.7 8.8 99 9.3 8.9 104
DEER PARK 9700 5.8 9.1 64 9.5 12.4 77
LAPRELE CREEK 8375 -M 6.1 * -M 7.0 *
RENO HILL 8400 5.7 7.3 78 6.9 8.1 85
ROACH 9700 8.9 8.7 102 10.3 9.8 105
SAND LAKE 10050 13.9 16.9 82 12.8 13.4 96
SOUTH PASS 9040 6.6 9.5 69 8.9 10.3 86
WINDY PEAK 7900 3.2 3.8 84 3.8 6.1 62
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Basin wide percent of average 81 90
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 6.2 5.6 111 9.0 8.3 108
DIVIDE PEAK 8880 10.1 10.8 94 12.1 11.6 104
OLD BATTLE 10000 15.7 16.6 95 19.6 18.7 105
SANDSTONE RS 8150 7.7 7.0 110 10.1 10.4 97
WHISKEY PARK 8950 14.8 13.9 106 17.0 15.9 107
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Basin wide percent of average 101 104
UPPER GREEN RIVER
BIG SANDY OPENING 9080 7.0 7.9 89 7.2 7.5 96
BLIND BULL SUM 8650 15.3 15.3 100 12.8 12.9 99
EAST RIM DIVIDE 7930 5.3 6.9 77 8.2 6.7 122
ELKHART PARK G.S. 9400 8.0 7.3 110 9.3 7.6 122
GROS VENTRE SUMMIT 8750 8.5 8.0 106 9.5 7.3 130
GUNSIGHT PASS 9820 8.4 -M * 9.4 -M *
KENDALL R.S. 7740 6.9 8.0 86 9.3 8.1 115
LOOMIS PARK 8240 10.3 9.3 111 12.7 9.8 130
NEW FORK LAKE 8340 7.6 6.3 121 7.4 6.8 109
SNIDER BASIN 8060 8.7 8.0 109 9.5 9.3 102
SPRING CREEK DIVIDE 9000 15.6 14.4 108 16.4 15.4 106
TRIPLE PEAK 8500 15.5 13.8 112 17.1 13.3 129
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Basin wide percent of average 103 114
LOWER GREEN RIVER
HAMS FORK 7840 5.2 6.6 79 6.2 6.9 90
HEWINTA 9519 3.9 5.1 76 6.7 7.9 85
HICKERSON PARK 9145 1.6 3.5 46 4.2 4.6 91
HOLE-IN-ROCK 9150 2.0 3.2 62 4.1 4.2 98
INDIAN CREEK 9425 12.3 14.5 85 12.0 14.2 85
KELLEY R.S. 8180 7.4 8.8 84 9.3 11.8 79
STEEL CREEK PARK 10200 5.2 7.7 68 8.4 8.5 99
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Basin wide percent of average 76 88
UPPER BEAR RIVER
BUG LAKE 7950 6.3 10.2 62 9.2 10.7 86
HAYDEN FORK 9212 8.5 7.6 112 11.2 11.5 97
KELLEY R.S. 8180 7.4 8.8 84 9.3 11.8 79
LILY LAKE 9156 6.8 6.5 105 8.6 9.8 88
MONTE CRISTO 8960 12.6 13.7 92 13.7 14.0 98
SALT RIVER SUMMIT 7760 7.3 6.8 107 9.0 10.6 85
TRIAL LAKE 9992 11.2 12.5 90 11.2 13.1 85
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Basin wide percent of average 91 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.