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: NOVEMBER 14 , 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 1.8 50 3.5 3.4 103
COTTONWOOD CREEK 7670 -M 2.1 * -M 4.9 *
GRAND TARGHEE 9260 7.3 -M * 6.0 -M *
GRANITE CREEK 6770 .1 1.4 7 2.7 3.0 90
GRASSY LAKE 7265 2.2 3.4 65 4.8 5.6 86
GROS VENTRE SUMMIT 8750 2.1 2.3 91 2.3 2.8 82
GUNSIGHT PASS 9820 1.8 -M * 3.1 -M *
LEWIS LAKE DIVIDE 7850 -M 3.4 * -M 5.5 *
PHILLIPS BENCH 8200 1.5 3.1 48 3.5 4.1 85
SALT RIVER SUMMIT 7760 .0 1.0 0 2.4 3.0 80
SNAKE RIVER STATION 6920 .9 1.6 56 4.6 3.7 124
SPRING CREEK DIVIDE 9000 3.4 3.3 103 4.3 4.3 100
THUMB DIVIDE 7980 2.2 1.9 116 5.2 3.3 158
TOGWOTEE PASS 9580 4.8 4.3 112 5.1 4.5 113
TWO OCEAN PLATEAU 9240 6.7 5.1 131 5.2 4.9 106
WILLOW CREEK 8380 2.2 3.9 56 6.2 5.8 107
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Basin wide percent of average 82 103
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 5.0 4.4 114 3.9 3.4 115
BLACK BEAR 8170 6.2 5.1 122 7.4 6.1 121
CANYON 7870 2.3 1.5 153 3.8 3.0 127
FISHER CREEK 9100 7.5 4.9 153 7.5 5.6 134
MADISON PLATEAU 7750 3.9 3.0 130 6.8 4.1 166
NORTHEAST ENTRANCE 7350 .6 1.0 60 3.4 2.4 142
PARKER PEAK 9400 5.5 4.1 134 4.2 3.5 120
SYLVAN LAKE 8420 2.6 3.6 72 4.6 4.2 110
THUMB DIVIDE 7980 2.2 1.9 116 5.2 3.3 158
TWO OCEAN PLATEAU 9240 6.7 5.1 131 5.2 4.9 106
WHISKEY CREEK 6800 1.5 1.7 88 4.3 3.6 119
WHITE MILL 8700 5.4 3.6 150 5.1 4.4 116
WOLVERINE 7650 .9 1.3 69 2.5 2.8 89
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Basin wide percent of average 122 125
WIND RIVER
BURROUGHS CREEK 8750 3.0 2.0 150 2.6 2.8 93
COLD SPRINGS 9630 2.3 2.0 115 3.1 2.9 107
DEER PARK 9700 5.0 3.6 139 6.1 4.4 139
HOBBS PARK 10100 5.4 3.4 159 5.2 3.2 162
LITTLE WARM 9370 1.8 2.0 90 2.5 2.9 86
SOUTH PASS 9040 4.2 2.8 150 5.0 3.6 139
ST. LAWRENCE ALT 8620 1.7 1.5 113 3.8 2.5 152
TOGWOTEE PASS 9580 4.8 4.3 112 5.1 4.5 113
TOWNSEND CREEK 8700 3.0 1.8 167 4.8 3.2 150
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Basin wide percent of average 133 127
BIGHORN BASIN
BALD MTN. 9380 4.0 4.2 95 3.2 3.6 89
BEAR TRAP MEADOW 8200 1.1 1.0 110 2.1 2.5 84
BLACKWATER 9780 6.2 4.8 129 5.2 4.3 121
BONE SPRINGS DIV 9350 3.5 3.9 90 3.1 3.5 89
EVENING STAR 9200 5.9 4.8 123 6.9 4.8 144
GRAVE SPRINGS 8550 2.4 1.9 126 3.7 2.7 137
KIRWIN 9550 3.1 2.9 107 2.6 2.8 93
MARQUETTE 8760 2.8 2.6 108 3.1 3.2 97
MIDDLE POWDER 7760 2.2 2.3 96 2.8 3.7 76
OWL CREEK 8975 2.4 1.3 185 1.9 1.7 112
POWDER RIVER PASS 9480 2.2 2.2 100 2.3 2.8 82
SHELL CREEK 9580 3.8 3.8 100 3.5 3.0 117
SYLVAN LAKE 8420 2.6 3.6 72 4.6 4.2 110
SYLVAN ROAD 7120 1.1 1.5 73 3.8 3.7 103
TIMBER CREEK 7950 .9 1.6 56 2.5 2.3 109
YOUNTS PEAK 8350 3.0 2.6 115 2.6 3.1 84
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Basin wide percent of average 105 104
SHOSHONE RIVER
BLACKWATER 9780 6.2 4.8 129 5.2 4.3 121
EVENING STAR 9200 5.9 4.8 123 6.9 4.8 144
KIRWIN 9550 3.1 2.9 107 2.6 2.8 93
MARQUETTE 8760 2.8 2.6 108 3.1 3.2 97
SYLVAN LAKE 8420 2.6 3.6 72 4.6 4.2 110
SYLVAN ROAD 7120 1.1 1.5 73 3.8 3.7 103
YOUNTS PEAK 8350 3.0 2.6 115 2.6 3.1 84
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Basin wide percent of average 108 110
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.1 1.0 110 2.1 2.5 84
BIG GOOSE 7990 1.8 1.4 129 3.4 2.5 136
BONE SPRINGS DIV 9350 3.5 3.9 90 3.1 3.5 89
BURGESS JUNCTION 7880 3.1 2.4 129 3.8 3.1 123
CLOUD PEAK RESERVOIR 9860 3.6 2.5 144 3.0 3.7 81
DOME LAKE 8880 2.4 3.1 77 3.6 3.5 103
GRAVE SPRINGS 8550 2.4 1.9 126 3.7 2.7 137
HANSEN SAWMILL 8360 1.2 1.3 92 2.1 2.5 84
MIDDLE POWDER 7760 2.2 2.3 96 2.8 3.7 76
POWDER RIVER PASS 9480 2.2 2.2 100 2.3 2.8 82
SUCKER CREEK 8880 3.7 2.1 176 4.1 3.3 124
TIE CREEK 6870 .2 1.2 17 4.1 3.1 132
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Basin wide percent of average 108 103
BELLE FOURCHE
BLIND PARK 6890 .6 1.4 43 4.1 3.5 117
COLE CANYON 5910 .0 1.4 0 3.9 2.4 162
NORTH RAPID CREEK 6130 .8 .9 89 4.1 3.1 132
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Basin wide percent of average 38 134
UPPER N. PLATTE RIVER
COLUMBINE 9160 1.2 2.4 50 4.4 3.8 116
DIVIDE PEAK 8880 3.9 3.0 130 6.9 4.1 168
ELK RIVER 8700 1.2 1.4 86 4.3 3.3 130
JOE WRIGHT 10120 3.2 4.2 76 5.4 5.2 104
NORTH FRENCH CREEK 10130 8.7 5.0 174 8.9 5.1 175
OLD BATTLE 10000 9.1 5.3 172 9.4 5.7 165
SAGE CREEK BASIN 7850 1.9 1.7 112 4.1 2.3 178
SOUTH BRUSH CREEK 8440 2.2 1.5 147 5.6 3.8 147
TOWER 10500 8.2 7.1 115 8.1 6.5 125
WEBBER SPRINGS 9250 4.5 3.7 122 7.6 4.9 155
WILLOW CREEK PASS 9540 1.1 2.2 50 3.1 3.0 103
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Basin wide percent of average 121 142
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 5.5 3.6 153 6.5 3.9 167
CASPER MTN. 7900 3.1 2.9 107 4.2 3.7 114
DEADMAN HILL 10220 1.9 3.4 56 5.6 3.6 156
DEER PARK 9700 5.0 3.6 139 6.1 4.4 139
LAPRELE CREEK 8375 2.0 1.9 105 4.2 3.0 140
RENO HILL 8400 4.0 2.7 148 5.1 3.7 138
ROACH 9700 4.3 2.4 179 6.0 3.5 171
SAND LAKE 10050 9.0 5.6 161 9.2 4.7 196
SOUTH PASS 9040 4.2 2.8 150 5.0 3.6 139
WINDY PEAK 7900 1.4 1.2 117 3.9 2.6 150
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Basin wide percent of average 134 152
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .8 1.1 73 3.2 2.9 110
DIVIDE PEAK 8880 3.9 3.0 130 6.9 4.1 168
OLD BATTLE 10000 9.1 5.3 172 9.4 5.7 165
SANDSTONE RS 8150 .0 1.1 0 3.7 3.6 103
WHISKEY PARK 8950 3.5 3.4 103 7.2 4.7 153
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Basin wide percent of average 124 145
UPPER GREEN RIVER
BIG SANDY OPENING 9080 2.9 2.3 126 3.1 2.8 111
BLIND BULL SUM 8650 2.9 3.5 83 2.8 3.7 76
EAST RIM DIVIDE 7930 .1 1.5 7 1.9 2.2 86
ELKHART PARK G.S. 9400 2.1 1.8 117 2.7 2.9 93
GROS VENTRE SUMMIT 8750 2.1 2.3 91 2.3 2.8 82
GUNSIGHT PASS 9820 1.8 -M * 3.1 -M *
KENDALL R.S. 7740 .1 1.5 7 2.1 2.5 84
LOOMIS PARK 8240 .3 2.1 14 2.5 3.0 83
NEW FORK LAKE 8340 .2 1.3 15 -M 2.5 *
SNIDER BASIN 8060 1.1 1.7 65 2.6 2.7 96
SPRING CREEK DIVIDE 9000 3.4 3.3 103 4.3 4.3 100
TRIPLE PEAK 8500 3.2 2.9 110 4.7 3.8 124
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Basin wide percent of average 76 94
LOWER GREEN RIVER
HAMS FORK 7840 .1 1.1 9 3.1 2.2 141
HEWINTA 9519 -M 1.3 * 2.5 3.4 74
HICKERSON PARK 9145 .5 .9 56 3.0 2.4 125
HOLE-IN-ROCK 9150 .8 .9 89 3.7 2.3 161
INDIAN CREEK 9425 4.4 3.3 133 4.6 4.2 110
KELLEY R.S. 8180 -M 2.1 * -M 3.5 *
STEEL CREEK PARK 10200 1.9 2.5 76 3.5 3.5 100
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Basin wide percent of average 89 113
UPPER BEAR RIVER
BUG LAKE 7950 .4 2.2 18 3.5 3.6 97
HAYDEN FORK 9212 .9 1.6 56 3.6 3.8 95
KELLEY R.S. 8180 -M 2.1 * -M 3.5 *
LILY LAKE 9156 1.2 1.7 71 3.0 3.7 81
MONTE CRISTO 8960 1.9 2.8 68 4.1 4.4 93
SALT RIVER SUMMIT 7760 .0 1.0 0 2.4 3.0 80
TRIAL LAKE 9992 3.0 3.3 91 3.5 4.3 81
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Basin wide percent of average 59 88
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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.