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: NOVEMBER 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 1.0 1.6 62 3.3 3.3 100
COTTONWOOD CREEK 7670 -M 2.0 * -M 4.7 *
GRAND TARGHEE 9260 7.3 -M * 6.1 -M *
GRANITE CREEK 6770 .2 1.3 15 2.8 2.9 97
GRASSY LAKE 7265 2.2 3.2 69 4.9 5.4 91
GROS VENTRE SUMMIT 8750 2.2 2.2 100 2.3 2.7 85
GUNSIGHT PASS 9820 1.8 -M * 3.1 -M *
LEWIS LAKE DIVIDE 7850 -M 3.2 * -M 5.2 *
PHILLIPS BENCH 8200 1.5 3.0 50 3.6 3.9 92
SALT RIVER SUMMIT 7760 .0 1.0 0 2.5 3.0 83
SNAKE RIVER STATION 6920 1.0 1.5 67 4.6 3.6 128
SPRING CREEK DIVIDE 9000 3.6 3.1 116 4.4 4.2 105
THUMB DIVIDE 7980 2.2 1.8 122 5.1 3.2 159
TOGWOTEE PASS 9580 4.9 4.1 120 5.0 4.3 116
TWO OCEAN PLATEAU 9240 6.8 4.9 139 5.2 4.7 111
WILLOW CREEK 8380 2.4 3.7 65 6.1 5.6 109
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Basin wide percent of average 89 106
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 5.1 4.3 119 4.1 3.3 124
BLACK BEAR 8170 6.0 4.8 125 7.3 5.9 124
CANYON 7870 2.3 1.5 153 3.7 2.9 128
FISHER CREEK 9100 7.4 4.8 154 7.5 5.4 139
MADISON PLATEAU 7750 3.8 2.9 131 6.7 4.0 168
NORTHEAST ENTRANCE 7350 .6 .9 67 3.4 2.3 148
PARKER PEAK 9400 5.6 4.0 140 4.2 3.3 127
SYLVAN LAKE 8420 2.6 3.4 76 4.5 4.0 112
THUMB DIVIDE 7980 2.2 1.8 122 5.1 3.2 159
TWO OCEAN PLATEAU 9240 6.8 4.9 139 5.2 4.7 111
WHISKEY CREEK 6800 1.4 1.6 87 4.2 3.5 120
WHITE MILL 8700 5.4 3.5 154 5.1 4.3 119
WOLVERINE 7650 .9 1.3 69 2.4 2.7 89
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Basin wide percent of average 126 128
WIND RIVER
BURROUGHS CREEK 8750 3.1 1.9 163 2.7 2.7 100
COLD SPRINGS 9630 2.4 1.8 133 3.1 2.8 111
DEER PARK 9700 5.1 3.6 142 6.1 4.3 142
HOBBS PARK 10100 5.5 3.3 167 5.2 3.2 162
LITTLE WARM 9370 1.8 1.9 95 2.5 2.8 89
SOUTH PASS 9040 4.3 2.7 159 5.2 3.5 149
ST. LAWRENCE ALT 8620 2.0 1.5 133 3.9 2.5 156
TOGWOTEE PASS 9580 4.9 4.1 120 5.0 4.3 116
TOWNSEND CREEK 8700 3.3 1.7 194 4.9 3.1 158
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Basin wide percent of average 144 132
BIGHORN BASIN
BALD MTN. 9380 4.0 4.1 98 3.3 3.5 94
BEAR TRAP MEADOW 8200 1.2 1.0 120 2.2 2.5 88
BLACKWATER 9780 6.2 4.6 135 5.3 4.1 129
BONE SPRINGS DIV 9350 3.5 3.8 92 3.2 3.5 91
EVENING STAR 9200 6.0 4.7 128 6.8 4.6 148
GRAVE SPRINGS 8550 2.4 1.8 133 3.6 2.6 138
KIRWIN 9550 3.2 2.8 114 2.6 2.7 96
MARQUETTE 8760 2.8 2.6 108 3.2 3.1 103
MIDDLE POWDER 7760 2.4 2.2 109 2.9 3.6 81
OWL CREEK 8975 2.4 1.3 185 2.0 1.6 125
POWDER RIVER PASS 9480 2.1 2.2 95 2.5 2.7 93
SHELL CREEK 9580 3.9 3.7 105 3.4 3.0 113
SYLVAN LAKE 8420 2.6 3.4 76 4.5 4.0 112
SYLVAN ROAD 7120 1.1 1.4 79 3.7 3.5 106
TIMBER CREEK 7950 1.0 1.6 62 2.5 2.2 114
YOUNTS PEAK 8350 3.1 2.5 124 2.6 3.0 87
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Basin wide percent of average 110 108
SHOSHONE RIVER
BLACKWATER 9780 6.2 4.6 135 5.3 4.1 129
EVENING STAR 9200 6.0 4.7 128 6.8 4.6 148
KIRWIN 9550 3.2 2.8 114 2.6 2.7 96
MARQUETTE 8760 2.8 2.6 108 3.2 3.1 103
SYLVAN LAKE 8420 2.6 3.4 76 4.5 4.0 112
SYLVAN ROAD 7120 1.1 1.4 79 3.7 3.5 106
YOUNTS PEAK 8350 3.1 2.5 124 2.6 3.0 87
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Basin wide percent of average 114 115
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.2 1.0 120 2.2 2.5 88
BIG GOOSE 7990 1.8 1.3 138 3.4 2.5 136
BONE SPRINGS DIV 9350 3.5 3.8 92 3.2 3.5 91
BURGESS JUNCTION 7880 3.1 2.4 129 3.7 3.0 123
CLOUD PEAK RESERVOIR 9860 3.8 2.5 152 3.6 3.6 100
DOME LAKE 8880 2.5 3.0 83 3.5 3.5 100
GRAVE SPRINGS 8550 2.4 1.8 133 3.6 2.6 138
HANSEN SAWMILL 8360 1.2 1.3 92 2.1 2.5 84
MIDDLE POWDER 7760 2.4 2.2 109 2.9 3.6 81
POWDER RIVER PASS 9480 2.1 2.2 95 2.5 2.7 93
SUCKER CREEK 8880 3.7 2.1 176 4.3 3.3 130
TIE CREEK 6870 .3 1.2 25 4.1 3.0 137
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Basin wide percent of average 113 108
BELLE FOURCHE
BLIND PARK 6890 .8 1.4 57 4.2 3.4 124
COLE CANYON 5910 .0 1.4 0 4.0 2.3 174
NORTH RAPID CREEK 6130 .7 .9 78 4.1 3.1 132
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Basin wide percent of average 41 140
UPPER N. PLATTE RIVER
COLUMBINE 9160 .9 2.2 41 4.3 3.7 116
DIVIDE PEAK 8880 3.6 2.9 124 6.4 3.9 164
ELK RIVER 8700 .6 1.3 46 3.7 3.2 116
JOE WRIGHT 10120 3.3 4.1 80 5.0 5.0 100
NORTH FRENCH CREEK 10130 8.1 4.8 169 8.4 4.9 171
OLD BATTLE 10000 8.6 5.1 169 9.1 5.5 165
SAGE CREEK BASIN 7850 1.7 1.7 100 3.6 2.3 157
SOUTH BRUSH CREEK 8440 1.8 1.4 129 5.3 3.7 143
TOWER 10500 7.5 6.7 112 7.7 6.3 122
WEBBER SPRINGS 9250 4.2 3.5 120 7.1 4.7 151
WILLOW CREEK PASS 9540 1.4 2.1 67 3.2 2.9 110
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Basin wide percent of average 116 138
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 5.3 3.5 151 6.2 3.8 163
CASPER MTN. 7900 3.2 2.8 114 4.2 3.7 114
DEADMAN HILL 10220 1.2 3.3 36 4.8 3.5 137
DEER PARK 9700 5.1 3.6 142 6.1 4.3 142
LAPRELE CREEK 8375 2.0 1.8 111 4.1 2.9 141
RENO HILL 8400 3.9 2.6 150 5.2 3.6 144
ROACH 9700 3.4 2.3 148 5.2 3.4 153
SAND LAKE 10050 8.6 5.4 159 8.9 4.5 198
SOUTH PASS 9040 4.3 2.7 159 5.2 3.5 149
WINDY PEAK 7900 1.5 1.2 125 3.9 2.5 156
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Basin wide percent of average 132 151
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .6 1.0 60 2.8 2.8 100
DIVIDE PEAK 8880 3.6 2.9 124 6.4 3.9 164
OLD BATTLE 10000 8.6 5.1 169 9.1 5.5 165
SANDSTONE RS 8150 .0 1.1 0 3.2 3.5 91
WHISKEY PARK 8950 2.9 3.2 91 6.5 4.5 144
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Basin wide percent of average 118 139
UPPER GREEN RIVER
BIG SANDY OPENING 9080 3.1 2.2 141 3.4 2.7 126
BLIND BULL SUM 8650 2.9 3.4 85 2.7 3.5 77
EAST RIM DIVIDE 7930 .1 1.4 7 1.9 2.1 90
ELKHART PARK G.S. 9400 2.2 1.7 129 2.8 2.9 97
GROS VENTRE SUMMIT 8750 2.2 2.2 100 2.3 2.7 85
GUNSIGHT PASS 9820 1.8 -M * 3.1 -M *
KENDALL R.S. 7740 .2 1.5 13 2.2 2.4 92
LOOMIS PARK 8240 .4 2.0 20 2.5 2.9 86
NEW FORK LAKE 8340 .3 1.2 25 -M 2.4 *
SNIDER BASIN 8060 1.1 1.6 69 2.8 2.6 108
SPRING CREEK DIVIDE 9000 3.6 3.1 116 4.4 4.2 105
TRIPLE PEAK 8500 3.2 2.8 114 4.8 3.6 133
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Basin wide percent of average 84 101
LOWER GREEN RIVER
HAMS FORK 7840 .2 1.0 20 3.1 2.2 141
HEWINTA 9519 .9 1.3 69 2.7 3.3 82
HICKERSON PARK 9145 1.7 .8 212 3.4 2.4 142
HOLE-IN-ROCK 9150 1.1 .9 122 3.7 2.2 168
INDIAN CREEK 9425 4.4 3.2 138 -M 4.1 *
KELLEY R.S. 8180 1.5 2.0 75 3.6 3.4 106
STEEL CREEK PARK 10200 2.0 2.5 80 3.5 3.4 103
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Basin wide percent of average 101 118
UPPER BEAR RIVER
BUG LAKE 7950 .5 2.1 24 3.6 3.5 103
HAYDEN FORK 9212 .8 1.5 53 3.6 3.7 97
KELLEY R.S. 8180 1.5 2.0 75 3.6 3.4 106
LILY LAKE 9156 1.4 1.6 87 2.8 3.6 78
MONTE CRISTO 8960 2.4 2.7 89 4.1 4.3 95
SALT RIVER SUMMIT 7760 .0 1.0 0 2.5 3.0 83
TRIAL LAKE 9992 2.9 3.2 91 3.4 4.2 81
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Basin wide percent of average 67 92
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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.