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 16 , 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 2.0 45 3.5 3.7 95
COTTONWOOD CREEK 7670 -M 2.4 * -M 5.2 *
GRAND TARGHEE 9260 7.6 -M * 6.4 -M *
GRANITE CREEK 6770 .1 1.6 6 2.7 3.2 84
GRASSY LAKE 7265 2.3 3.9 59 5.0 6.0 83
GROS VENTRE SUMMIT 8750 2.1 2.4 88 2.4 3.0 80
GUNSIGHT PASS 9820 1.8 -M * 3.2 -M *
LEWIS LAKE DIVIDE 7850 -M 3.8 * -M 5.9 *
PHILLIPS BENCH 8200 1.6 3.4 47 3.7 4.4 84
SALT RIVER SUMMIT 7760 .1 1.2 8 2.5 3.2 78
SNAKE RIVER STATION 6920 1.0 1.9 53 4.8 3.9 123
SPRING CREEK DIVIDE 9000 3.6 3.6 100 4.4 4.6 96
THUMB DIVIDE 7980 2.1 2.1 100 5.2 3.5 149
TOGWOTEE PASS 9580 4.9 4.6 107 5.2 4.8 108
TWO OCEAN PLATEAU 9240 6.8 5.4 126 5.2 5.2 100
WILLOW CREEK 8380 2.5 4.3 58 6.3 6.2 102
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Basin wide percent of average 77 98
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 5.1 4.7 109 4.1 3.7 111
BLACK BEAR 8170 6.4 5.5 116 7.7 6.5 118
CANYON 7870 2.4 1.7 141 3.8 3.2 119
FISHER CREEK 9100 7.4 5.3 140 7.5 6.1 123
MADISON PLATEAU 7750 3.9 3.3 118 6.9 4.4 157
NORTHEAST ENTRANCE 7350 .5 1.1 45 3.4 2.6 131
PARKER PEAK 9400 5.6 4.4 127 4.3 3.7 116
SYLVAN LAKE 8420 2.7 3.9 69 4.7 4.4 107
THUMB DIVIDE 7980 2.1 2.1 100 5.2 3.5 149
TWO OCEAN PLATEAU 9240 6.8 5.4 126 5.2 5.2 100
WHISKEY CREEK 6800 1.5 1.9 79 4.3 3.8 113
WHITE MILL 8700 5.5 3.9 141 5.0 4.8 104
WOLVERINE 7650 .9 1.5 60 2.5 2.9 86
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Basin wide percent of average 114 118
WIND RIVER
BURROUGHS CREEK 8750 3.1 2.2 141 3.0 3.0 100
COLD SPRINGS 9630 2.5 2.1 119 3.2 3.1 103
DEER PARK 9700 5.1 3.7 138 6.2 4.8 129
HOBBS PARK 10100 5.4 3.7 146 5.2 3.4 153
LITTLE WARM 9370 2.0 2.2 91 2.6 3.1 84
SOUTH PASS 9040 4.2 3.1 135 5.1 3.9 131
ST. LAWRENCE ALT 8620 1.8 1.8 100 3.8 2.7 141
TOGWOTEE PASS 9580 4.9 4.6 107 5.2 4.8 108
TOWNSEND CREEK 8700 2.9 2.0 145 5.0 3.3 152
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Basin wide percent of average 126 122
BIGHORN BASIN
BALD MTN. 9380 4.1 4.5 91 3.5 3.8 92
BEAR TRAP MEADOW 8200 1.1 1.1 100 2.2 2.6 85
BLACKWATER 9780 6.5 5.1 127 5.6 4.6 122
BONE SPRINGS DIV 9350 3.6 4.1 88 3.5 3.7 95
EVENING STAR 9200 6.0 5.2 115 7.2 5.1 141
GRAVE SPRINGS 8550 2.6 2.0 130 3.8 2.8 136
KIRWIN 9550 3.2 3.0 107 2.7 3.0 90
MARQUETTE 8760 2.9 2.8 104 3.4 3.3 103
MIDDLE POWDER 7760 2.3 2.5 92 3.0 3.8 79
OWL CREEK 8975 2.3 1.5 153 2.0 1.8 111
POWDER RIVER PASS 9480 2.2 2.3 96 2.4 2.9 83
SHELL CREEK 9580 3.9 3.9 100 3.6 3.2 112
SYLVAN LAKE 8420 2.7 3.9 69 4.7 4.4 107
SYLVAN ROAD 7120 1.2 1.7 71 3.9 4.0 98
TIMBER CREEK 7950 .9 1.9 47 2.5 2.4 104
YOUNTS PEAK 8350 3.1 2.8 111 2.6 3.3 79
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Basin wide percent of average 101 103
SHOSHONE RIVER
BLACKWATER 9780 6.5 5.1 127 5.6 4.6 122
EVENING STAR 9200 6.0 5.2 115 7.2 5.1 141
KIRWIN 9550 3.2 3.0 107 2.7 3.0 90
MARQUETTE 8760 2.9 2.8 104 3.4 3.3 103
SYLVAN LAKE 8420 2.7 3.9 69 4.7 4.4 107
SYLVAN ROAD 7120 1.2 1.7 71 3.9 4.0 98
YOUNTS PEAK 8350 3.1 2.8 111 2.6 3.3 79
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Basin wide percent of average 104 109
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.1 1.1 100 2.2 2.6 85
BIG GOOSE 7990 1.8 1.5 120 3.5 2.6 135
BONE SPRINGS DIV 9350 3.6 4.1 88 3.5 3.7 95
BURGESS JUNCTION 7880 3.2 2.7 119 4.0 3.2 125
CLOUD PEAK RESERVOIR 9860 3.7 2.7 137 3.7 3.8 97
DOME LAKE 8880 2.4 3.2 75 3.6 3.7 97
GRAVE SPRINGS 8550 2.6 2.0 130 3.8 2.8 136
HANSEN SAWMILL 8360 1.3 1.3 100 2.1 2.6 81
MIDDLE POWDER 7760 2.3 2.5 92 3.0 3.8 79
POWDER RIVER PASS 9480 2.2 2.3 96 2.4 2.9 83
SUCKER CREEK 8880 3.9 2.4 162 4.4 3.5 126
TIE CREEK 6870 .1 1.2 8 4.1 3.1 132
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Basin wide percent of average 104 105
BELLE FOURCHE
BLIND PARK 6890 1.0 1.5 67 4.3 3.6 119
COLE CANYON 5910 .0 1.5 0 4.1 2.5 164
NORTH RAPID CREEK 6130 1.0 1.0 100 4.2 3.2 131
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Basin wide percent of average 50 135
UPPER N. PLATTE RIVER
COLUMBINE 9160 1.4 2.6 54 4.6 4.1 112
DIVIDE PEAK 8880 3.9 3.2 122 6.9 4.3 160
ELK RIVER 8700 1.3 1.6 81 4.4 3.5 126
JOE WRIGHT 10120 3.5 4.5 78 5.7 5.5 104
NORTH FRENCH CREEK 10130 8.8 5.3 166 9.0 5.3 170
OLD BATTLE 10000 9.0 5.7 158 9.3 6.0 155
SAGE CREEK BASIN 7850 1.9 1.9 100 4.1 2.5 164
SOUTH BRUSH CREEK 8440 2.1 1.7 124 5.5 3.9 141
TOWER 10500 8.3 7.7 108 8.3 6.9 120
WEBBER SPRINGS 9250 4.5 4.0 112 7.7 5.2 148
WILLOW CREEK PASS 9540 1.6 2.4 67 3.3 3.2 103
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Basin wide percent of average 114 137
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 5.5 3.8 145 6.6 4.2 157
CASPER MTN. 7900 2.8 3.1 90 4.2 3.9 108
DEADMAN HILL 10220 1.5 3.6 42 6.0 3.8 158
DEER PARK 9700 5.1 3.7 138 6.2 4.8 129
LAPRELE CREEK 8375 1.8 2.0 90 4.2 3.1 135
RENO HILL 8400 3.9 2.9 134 5.1 3.9 131
ROACH 9700 4.7 2.6 181 6.3 3.7 170
SAND LAKE 10050 9.1 6.0 152 9.4 4.9 192
SOUTH PASS 9040 4.2 3.1 135 5.1 3.9 131
WINDY PEAK 7900 1.4 1.4 100 4.0 2.7 148
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Basin wide percent of average 124 147
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .7 1.1 64 3.1 3.1 100
DIVIDE PEAK 8880 3.9 3.2 122 6.9 4.3 160
OLD BATTLE 10000 9.0 5.7 158 9.3 6.0 155
SANDSTONE RS 8150 .0 1.3 0 3.7 3.8 97
WHISKEY PARK 8950 3.6 3.7 97 7.3 5.0 146
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Basin wide percent of average 115 136
UPPER GREEN RIVER
BIG SANDY OPENING 9080 3.0 2.4 125 3.2 3.0 107
BLIND BULL SUM 8650 2.9 3.9 74 2.8 4.0 70
EAST RIM DIVIDE 7930 .1 1.7 6 2.0 2.3 87
ELKHART PARK G.S. 9400 2.3 2.0 115 2.9 3.1 94
GROS VENTRE SUMMIT 8750 2.1 2.4 88 2.4 3.0 80
GUNSIGHT PASS 9820 1.8 -M * 3.2 -M *
KENDALL R.S. 7740 .2 1.7 12 2.2 2.7 81
LOOMIS PARK 8240 .4 2.3 17 2.6 3.2 81
NEW FORK LAKE 8340 .3 1.5 20 1.8 2.7 67
SNIDER BASIN 8060 1.2 1.9 63 2.8 2.9 97
SPRING CREEK DIVIDE 9000 3.6 3.6 100 4.4 4.6 96
TRIPLE PEAK 8500 3.7 3.3 112 4.9 4.1 120
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Basin wide percent of average 74 90
LOWER GREEN RIVER
HAMS FORK 7840 .3 1.2 25 3.2 2.4 133
HEWINTA 9519 .4 1.4 29 3.0 3.6 83
HICKERSON PARK 9145 1.2 .9 133 3.4 2.5 136
HOLE-IN-ROCK 9150 1.1 1.0 110 3.9 2.4 162
INDIAN CREEK 9425 4.6 3.7 124 5.1 4.5 113
KELLEY R.S. 8180 -M 2.3 * -M 3.7 *
STEEL CREEK PARK 10200 2.4 2.7 89 4.0 3.7 108
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Basin wide percent of average 92 118
UPPER BEAR RIVER
BUG LAKE 7950 .3 2.4 12 3.9 3.8 103
HAYDEN FORK 9212 1.1 1.8 61 3.8 4.1 93
KELLEY R.S. 8180 -M 2.3 * -M 3.7 *
LILY LAKE 9156 1.6 1.8 89 3.3 3.9 85
MONTE CRISTO 8960 2.5 3.0 83 4.5 4.7 96
SALT RIVER SUMMIT 7760 .1 1.2 8 2.5 3.2 78
TRIAL LAKE 9992 2.9 3.5 83 3.6 4.5 80
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Basin wide percent of average 62 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.