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 WEDNESDAY: NOVEMBER 18 , 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 2.2 45 3.4 4.0 85
COTTONWOOD CREEK 7670 -M 2.6 * -M 5.5 *
GRAND TARGHEE 9260 7.9 -M * 6.8 -M *
GRANITE CREEK 6770 .3 1.8 17 2.8 3.5 80
GRASSY LAKE 7265 2.3 4.3 53 5.0 6.4 78
GROS VENTRE SUMMIT 8750 2.3 2.6 88 2.5 3.1 81
GUNSIGHT PASS 9820 2.1 -M * 3.3 -M *
LEWIS LAKE DIVIDE 7850 3.1 4.3 72 5.6 6.3 89
PHILLIPS BENCH 8200 1.8 3.8 47 3.9 4.8 81
SALT RIVER SUMMIT 7760 .4 1.3 31 2.7 3.4 79
SNAKE RIVER STATION 6920 1.0 2.1 48 4.9 4.2 117
SPRING CREEK DIVIDE 9000 3.7 4.0 92 4.6 4.9 94
THUMB DIVIDE 7980 2.3 2.3 100 5.5 3.7 149
TOGWOTEE PASS 9580 5.0 4.9 102 5.3 5.1 104
TWO OCEAN PLATEAU 9240 6.9 5.8 119 5.5 5.6 98
WILLOW CREEK 8380 2.4 4.7 51 6.4 6.5 98
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Basin wide percent of average 74 94
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 5.2 4.8 108 4.3 3.9 110
BLACK BEAR 8170 6.5 5.8 112 7.7 7.0 110
CANYON 7870 2.4 1.8 133 4.0 3.4 118
FISHER CREEK 9100 7.5 5.5 136 7.7 6.5 118
MADISON PLATEAU 7750 4.0 3.5 114 7.1 4.7 151
NORTHEAST ENTRANCE 7350 .6 1.2 50 3.4 2.8 121
PARKER PEAK 9400 5.8 4.6 126 4.4 3.9 113
SYLVAN LAKE 8420 2.9 4.0 72 4.8 4.8 100
THUMB DIVIDE 7980 2.3 2.3 100 5.5 3.7 149
TWO OCEAN PLATEAU 9240 6.9 5.8 119 5.5 5.6 98
WHISKEY CREEK 6800 1.5 2.1 71 4.5 4.0 112
WHITE MILL 8700 5.5 4.1 134 5.2 5.1 102
WOLVERINE 7650 1.0 1.5 67 2.6 3.1 84
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Basin wide percent of average 111 114
WIND RIVER
BURROUGHS CREEK 8750 3.2 2.3 139 3.0 3.3 91
COLD SPRINGS 9630 2.6 2.2 118 3.2 3.2 100
DEER PARK 9700 5.2 3.7 141 6.3 5.1 124
HOBBS PARK 10100 5.6 3.9 144 5.4 3.5 154
LITTLE WARM 9370 2.0 2.3 87 2.6 3.3 79
SOUTH PASS 9040 4.3 3.3 130 5.3 4.1 129
ST. LAWRENCE ALT 8620 2.1 1.8 117 3.9 2.8 139
TOGWOTEE PASS 9580 5.0 4.9 102 5.3 5.1 104
TOWNSEND CREEK 8700 3.2 2.1 152 5.1 3.4 150
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Basin wide percent of average 125 119
BIGHORN BASIN
BALD MTN. 9380 4.2 4.5 93 3.7 4.0 92
BEAR TRAP MEADOW 8200 1.3 1.1 118 2.2 2.7 81
BLACKWATER 9780 6.6 5.3 125 5.7 4.9 116
BONE SPRINGS DIV 9350 3.7 4.2 88 3.5 3.8 92
EVENING STAR 9200 6.1 5.4 113 7.4 5.5 135
GRAVE SPRINGS 8550 2.8 2.0 140 3.9 2.9 134
KIRWIN 9550 3.3 3.1 106 2.9 3.1 94
MARQUETTE 8760 3.0 2.9 103 3.6 3.4 106
MIDDLE POWDER 7760 2.7 2.5 108 3.5 4.0 88
OWL CREEK 8975 2.4 1.5 160 2.1 1.8 117
POWDER RIVER PASS 9480 2.1 2.4 88 2.6 3.1 84
SHELL CREEK 9580 4.1 4.0 102 3.6 3.4 106
SYLVAN LAKE 8420 2.9 4.0 72 4.8 4.8 100
SYLVAN ROAD 7120 1.3 1.8 72 4.0 4.3 93
TIMBER CREEK 7950 1.0 1.9 53 2.6 2.5 104
YOUNTS PEAK 8350 3.3 3.0 110 2.7 3.5 77
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Basin wide percent of average 102 102
SHOSHONE RIVER
BLACKWATER 9780 6.6 5.3 125 5.7 4.9 116
EVENING STAR 9200 6.1 5.4 113 7.4 5.5 135
KIRWIN 9550 3.3 3.1 106 2.9 3.1 94
MARQUETTE 8760 3.0 2.9 103 3.6 3.4 106
SYLVAN LAKE 8420 2.9 4.0 72 4.8 4.8 100
SYLVAN ROAD 7120 1.3 1.8 72 4.0 4.3 93
YOUNTS PEAK 8350 3.3 3.0 110 2.7 3.5 77
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Basin wide percent of average 104 105
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.3 1.1 118 2.2 2.7 81
BIG GOOSE 7990 2.0 1.6 125 3.7 2.7 137
BONE SPRINGS DIV 9350 3.7 4.2 88 3.5 3.8 92
BURGESS JUNCTION 7880 3.3 2.7 122 4.2 3.4 124
CLOUD PEAK RESERVOIR 9860 3.8 2.8 136 3.7 4.0 92
DOME LAKE 8880 2.6 3.3 79 3.9 3.9 100
GRAVE SPRINGS 8550 2.8 2.0 140 3.9 2.9 134
HANSEN SAWMILL 8360 1.4 1.4 100 2.3 2.7 85
MIDDLE POWDER 7760 2.7 2.5 108 3.5 4.0 88
POWDER RIVER PASS 9480 2.1 2.4 88 2.6 3.1 84
SUCKER CREEK 8880 4.0 2.4 167 4.6 3.6 128
TIE CREEK 6870 .4 1.1 36 4.3 3.2 134
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Basin wide percent of average 109 106
BELLE FOURCHE
BLIND PARK 6890 1.2 1.5 80 4.3 3.7 116
COLE CANYON 5910 .0 1.6 0 4.1 2.6 158
NORTH RAPID CREEK 6130 1.3 1.1 118 4.3 3.3 130
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Basin wide percent of average 60 132
UPPER N. PLATTE RIVER
COLUMBINE 9160 1.6 2.9 55 4.8 4.4 109
DIVIDE PEAK 8880 3.9 3.4 115 7.0 4.5 156
ELK RIVER 8700 1.3 1.7 76 4.4 3.7 119
JOE WRIGHT 10120 4.8 4.7 102 5.8 5.8 100
NORTH FRENCH CREEK 10130 8.7 5.6 155 9.1 5.6 162
OLD BATTLE 10000 9.2 6.1 151 9.6 6.4 150
SAGE CREEK BASIN 7850 2.0 2.0 100 4.0 2.6 154
SOUTH BRUSH CREEK 8440 2.1 1.8 117 5.7 4.1 139
TOWER 10500 8.4 8.3 101 8.6 7.4 116
WEBBER SPRINGS 9250 4.5 4.3 105 7.8 5.5 142
WILLOW CREEK PASS 9540 2.3 2.5 92 3.6 3.3 109
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Basin wide percent of average 113 132
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 5.7 4.1 139 6.7 4.4 152
CASPER MTN. 7900 3.1 3.3 94 4.4 4.1 107
DEADMAN HILL 10220 .9 3.8 24 6.1 4.0 152
DEER PARK 9700 5.2 3.7 141 6.3 5.1 124
LAPRELE CREEK 8375 2.0 2.2 91 4.3 3.3 130
RENO HILL 8400 4.0 3.1 129 5.5 4.0 138
ROACH 9700 4.7 2.8 168 6.5 3.9 167
SAND LAKE 10050 9.1 6.4 142 9.6 5.2 185
SOUTH PASS 9040 4.3 3.3 130 5.3 4.1 129
WINDY PEAK 7900 1.4 1.5 93 4.2 2.8 150
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Basin wide percent of average 118 144
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 1.1 1.2 92 3.3 3.2 103
DIVIDE PEAK 8880 3.9 3.4 115 7.0 4.5 156
OLD BATTLE 10000 9.2 6.1 151 9.6 6.4 150
SANDSTONE RS 8150 .0 1.4 0 3.7 4.1 90
WHISKEY PARK 8950 2.8 4.0 70 7.3 5.3 138
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Basin wide percent of average 106 131
UPPER GREEN RIVER
BIG SANDY OPENING 9080 3.1 2.6 119 3.3 3.1 106
BLIND BULL SUM 8650 3.1 4.3 72 2.8 4.2 67
EAST RIM DIVIDE 7930 .2 1.9 11 2.1 2.5 84
ELKHART PARK G.S. 9400 2.4 2.1 114 3.0 3.3 91
GROS VENTRE SUMMIT 8750 2.3 2.6 88 2.5 3.1 81
GUNSIGHT PASS 9820 2.1 -M * 3.3 -M *
KENDALL R.S. 7740 .2 1.9 11 2.2 2.9 76
LOOMIS PARK 8240 .5 2.6 19 2.6 3.4 76
NEW FORK LAKE 8340 .3 1.6 19 2.1 2.8 75
SNIDER BASIN 8060 1.2 2.1 57 2.8 3.1 90
SPRING CREEK DIVIDE 9000 3.7 4.0 92 4.6 4.9 94
TRIPLE PEAK 8500 4.1 3.6 114 4.9 4.4 111
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Basin wide percent of average 72 87
LOWER GREEN RIVER
HAMS FORK 7840 .3 1.3 23 3.2 2.5 128
HEWINTA 9519 .5 1.5 33 3.0 3.8 79
HICKERSON PARK 9145 .7 1.0 70 3.6 2.6 138
HOLE-IN-ROCK 9150 1.3 1.0 130 3.9 2.4 162
INDIAN CREEK 9425 4.7 4.0 118 5.4 4.8 113
KELLEY R.S. 8180 -M 2.5 * -M 3.9 *
STEEL CREEK PARK 10200 2.7 2.8 96 4.0 3.9 103
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Basin wide percent of average 88 116
UPPER BEAR RIVER
BUG LAKE 7950 .3 2.6 12 4.0 4.0 100
HAYDEN FORK 9212 1.0 1.9 53 3.9 4.3 91
KELLEY R.S. 8180 -M 2.5 * -M 3.9 *
LILY LAKE 9156 1.8 1.9 95 3.3 4.2 79
MONTE CRISTO 8960 2.6 3.3 79 4.8 5.0 96
SALT RIVER SUMMIT 7760 .4 1.3 31 2.7 3.4 79
TRIAL LAKE 9992 3.0 3.8 79 3.6 4.8 75
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Basin wide percent of average 61 87
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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.