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 MONDAY: NOVEMBER 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 .7 1.2 58 3.1 2.8 111
COTTONWOOD CREEK 7670 .2 1.6 12 4.3 4.1 105
GRAND TARGHEE 9260 6.4 -M * 5.7 -M *
GRANITE CREEK 6770 .0 1.0 0 2.6 2.5 104
GRASSY LAKE 7265 1.7 2.5 68 4.3 4.6 93
GROS VENTRE SUMMIT 8750 2.1 1.9 111 2.2 2.4 92
GUNSIGHT PASS 9820 1.7 -M * 3.0 -M *
LEWIS LAKE DIVIDE 7850 -M 2.4 * -M 4.4 *
PHILLIPS BENCH 8200 1.3 2.4 54 3.4 3.3 103
SALT RIVER SUMMIT 7760 .0 .7 0 2.4 2.6 92
SNAKE RIVER STATION 6920 .4 1.1 36 3.7 3.1 119
SPRING CREEK DIVIDE 9000 3.2 2.5 128 4.0 3.6 111
THUMB DIVIDE 7980 1.1 1.4 79 4.2 2.7 156
TOGWOTEE PASS 9580 4.1 3.6 114 4.3 3.8 113
TWO OCEAN PLATEAU 9240 5.4 4.2 129 4.2 4.1 102
WILLOW CREEK 8380 1.7 3.0 57 5.6 4.9 114
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Basin wide percent of average 81 109
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 4.2 3.8 111 3.5 2.8 125
BLACK BEAR 8170 4.8 4.0 120 6.1 5.0 122
CANYON 7870 1.6 1.2 133 3.0 2.5 120
FISHER CREEK 9100 5.6 4.1 137 5.8 4.6 126
MADISON PLATEAU 7750 2.3 2.4 96 5.2 3.4 153
NORTHEAST ENTRANCE 7350 .2 .7 29 3.0 2.0 150
PARKER PEAK 9400 4.9 3.6 136 3.8 3.0 127
SYLVAN LAKE 8420 1.5 2.9 52 3.4 3.5 97
THUMB DIVIDE 7980 1.1 1.4 79 4.2 2.7 156
TWO OCEAN PLATEAU 9240 5.4 4.2 129 4.2 4.1 102
WHISKEY CREEK 6800 .1 1.3 8 3.0 3.0 100
WHITE MILL 8700 4.5 3.0 150 4.2 3.7 114
WOLVERINE 7650 .4 1.0 40 2.1 2.4 88
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Basin wide percent of average 109 121
WIND RIVER
BURROUGHS CREEK 8750 2.9 1.6 181 2.9 2.3 126
COLD SPRINGS 9630 2.3 1.6 144 3.0 2.5 120
DEER PARK 9700 4.4 3.3 133 5.6 3.6 156
HOBBS PARK 10100 4.9 3.0 163 4.7 2.8 168
LITTLE WARM 9370 1.6 1.6 100 2.4 2.4 100
SOUTH PASS 9040 3.8 2.4 158 4.7 3.0 157
ST. LAWRENCE ALT 8620 1.8 1.3 138 3.7 2.3 161
TOGWOTEE PASS 9580 4.1 3.6 114 4.3 3.8 113
TOWNSEND CREEK 8700 3.0 1.6 188 4.8 2.8 171
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Basin wide percent of average 144 142
BIGHORN BASIN
BALD MTN. 9380 4.0 3.6 111 3.5 3.1 113
BEAR TRAP MEADOW 8200 1.2 .8 150 2.2 2.2 100
BLACKWATER 9780 5.4 4.1 132 4.6 3.6 128
BONE SPRINGS DIV 9350 3.3 3.4 97 3.2 3.2 100
EVENING STAR 9200 4.9 4.0 123 6.0 3.9 154
GRAVE SPRINGS 8550 2.4 1.6 150 3.5 2.5 140
KIRWIN 9550 3.0 2.6 115 2.5 2.4 104
MARQUETTE 8760 2.9 2.5 116 3.1 2.9 107
MIDDLE POWDER 7760 2.4 1.9 126 2.9 3.3 88
OWL CREEK 8975 2.4 1.2 200 2.0 1.5 133
POWDER RIVER PASS 9480 2.0 1.8 111 2.3 2.5 92
SHELL CREEK 9580 3.6 3.4 106 3.2 2.6 123
SYLVAN LAKE 8420 1.5 2.9 52 3.4 3.5 97
SYLVAN ROAD 7120 .6 1.1 55 3.0 3.0 100
TIMBER CREEK 7950 1.0 1.5 67 2.4 2.0 120
YOUNTS PEAK 8350 2.7 2.3 117 2.5 2.6 96
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Basin wide percent of average 112 112
SHOSHONE RIVER
BLACKWATER 9780 5.4 4.1 132 4.6 3.6 128
EVENING STAR 9200 4.9 4.0 123 6.0 3.9 154
KIRWIN 9550 3.0 2.6 115 2.5 2.4 104
MARQUETTE 8760 2.9 2.5 116 3.1 2.9 107
SYLVAN LAKE 8420 1.5 2.9 52 3.4 3.5 97
SYLVAN ROAD 7120 .6 1.1 55 3.0 3.0 100
YOUNTS PEAK 8350 2.7 2.3 117 2.5 2.6 96
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Basin wide percent of average 108 115
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.2 .8 150 2.2 2.2 100
BIG GOOSE 7990 1.6 1.1 145 3.3 2.4 138
BONE SPRINGS DIV 9350 3.3 3.4 97 3.2 3.2 100
BURGESS JUNCTION 7880 2.9 2.2 132 3.8 2.8 136
CLOUD PEAK RESERVOIR 9860 3.5 2.3 152 3.5 3.3 106
DOME LAKE 8880 2.2 2.7 81 3.3 3.2 103
GRAVE SPRINGS 8550 2.4 1.6 150 3.5 2.5 140
HANSEN SAWMILL 8360 1.1 1.3 85 2.1 2.3 91
MIDDLE POWDER 7760 2.4 1.9 126 2.9 3.3 88
POWDER RIVER PASS 9480 2.0 1.8 111 2.3 2.5 92
SUCKER CREEK 8880 3.5 1.9 184 3.9 3.0 130
TIE CREEK 6870 .4 1.2 33 4.0 2.9 138
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Basin wide percent of average 119 113
BELLE FOURCHE
BLIND PARK 6890 .8 1.3 62 4.1 3.2 128
COLE CANYON 5910 .0 1.2 0 3.9 2.2 177
NORTH RAPID CREEK 6130 .8 .7 114 3.9 2.9 134
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Basin wide percent of average 50 143
UPPER N. PLATTE RIVER
COLUMBINE 9160 .8 1.7 47 4.0 3.2 125
DIVIDE PEAK 8880 2.4 2.5 96 5.3 3.5 151
ELK RIVER 8700 .0 1.1 0 3.2 2.9 110
JOE WRIGHT 10120 3.0 3.6 83 4.8 4.5 107
NORTH FRENCH CREEK 10130 7.0 4.2 167 7.4 4.4 168
OLD BATTLE 10000 7.3 4.4 166 7.7 4.8 160
SAGE CREEK BASIN 7850 1.1 1.5 73 2.8 2.0 140
SOUTH BRUSH CREEK 8440 .9 1.2 75 4.2 3.3 127
TOWER 10500 7.2 5.6 129 7.4 5.5 135
WEBBER SPRINGS 9250 3.2 2.9 110 6.2 4.2 148
WILLOW CREEK PASS 9540 .5 1.8 28 3.1 2.6 119
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Basin wide percent of average 110 137
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.7 3.0 157 5.7 3.4 168
CASPER MTN. 7900 3.0 2.5 120 3.9 3.3 118
DEADMAN HILL 10220 1.2 3.0 40 4.7 3.2 147
DEER PARK 9700 4.4 3.3 133 5.6 3.6 156
LAPRELE CREEK 8375 1.3 1.5 87 3.5 2.5 140
RENO HILL 8400 3.5 2.3 152 4.7 3.3 142
ROACH 9700 3.5 1.9 184 5.1 3.0 170
SAND LAKE 10050 7.6 4.6 165 7.8 4.0 195
SOUTH PASS 9040 3.8 2.4 158 4.7 3.0 157
WINDY PEAK 7900 1.3 1.0 130 3.7 2.2 168
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Basin wide percent of average 135 157
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .8 0 2.1 2.5 84
DIVIDE PEAK 8880 2.4 2.5 96 5.3 3.5 151
OLD BATTLE 10000 7.3 4.4 166 7.7 4.8 160
SANDSTONE RS 8150 -M .9 * 2.5 3.1 81
WHISKEY PARK 8950 2.4 2.7 89 5.9 3.9 151
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Basin wide percent of average 116 132
UPPER GREEN RIVER
BIG SANDY OPENING 9080 2.9 1.8 161 3.1 2.4 129
BLIND BULL SUM 8650 2.6 2.7 96 2.4 3.1 77
EAST RIM DIVIDE 7930 .1 1.1 9 1.9 1.9 100
ELKHART PARK G.S. 9400 2.2 1.4 157 2.8 2.6 108
GROS VENTRE SUMMIT 8750 2.1 1.9 111 2.2 2.4 92
GUNSIGHT PASS 9820 1.7 -M * 3.0 -M *
KENDALL R.S. 7740 .2 1.2 17 2.1 2.1 100
LOOMIS PARK 8240 .4 1.6 25 2.4 2.5 96
NEW FORK LAKE 8340 .2 1.0 20 -M 2.1 *
SNIDER BASIN 8060 1.0 1.3 77 2.6 2.2 118
SPRING CREEK DIVIDE 9000 3.2 2.5 128 4.0 3.6 111
TRIPLE PEAK 8500 3.0 2.2 136 4.4 3.1 142
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Basin wide percent of average 96 108
LOWER GREEN RIVER
HAMS FORK 7840 .1 .8 12 3.1 1.9 163
HEWINTA 9519 -M 1.2 * 2.3 3.0 77
HICKERSON PARK 9145 .4 .7 57 3.1 2.1 148
HOLE-IN-ROCK 9150 .8 .7 114 3.6 2.0 180
INDIAN CREEK 9425 4.3 2.5 172 4.6 3.5 131
KELLEY R.S. 8180 1.1 1.6 69 3.5 2.9 121
STEEL CREEK PARK 10200 1.4 2.2 64 3.0 3.1 97
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Basin wide percent of average 95 125
UPPER BEAR RIVER
BUG LAKE 7950 .0 1.8 0 3.3 3.1 106
HAYDEN FORK 9212 .1 1.3 8 2.9 3.3 88
KELLEY R.S. 8180 1.1 1.6 69 3.5 2.9 121
LILY LAKE 9156 .9 1.4 64 2.3 3.2 72
MONTE CRISTO 8960 1.5 2.3 65 3.8 3.7 103
SALT RIVER SUMMIT 7760 .0 .7 0 2.4 2.6 92
TRIAL LAKE 9992 2.1 2.7 78 3.0 3.7 81
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Basin wide percent of average 48 94
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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.