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 THURSDAY: NOVEMBER 17 , 2011
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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 2.1 2.2 95 5.7 4.0 142
COTTONWOOD CREEK 7670 1.8 2.6 69 6.4 5.5 116
GRAND TARGHEE 9260 6.8 -M * 7.3 -M *
GRANITE CREEK 6770 1.4 1.8 78* 3.7 3.5 106
GRASSY LAKE 7265 3.0 4.3 70 7.5 6.4 117
GROS VENTRE SUMMIT 8750 1.3 2.6 50 3.0 3.1 97
GUNSIGHT PASS 9820 2.1 -M * 3.7 -M *
LEWIS LAKE DIVIDE 7850 2.0 4.3 47 7.0 6.3 111
PHILLIPS BENCH 8200 1.7 3.8 45 4.4 4.8 92
SALT RIVER SUMMIT 7760 1.4 1.3 108* 3.3 3.4 97
SNAKE RIVER STATION 6920 1.6 2.1 76 5.8 4.2 138
SPRING CREEK DIVIDE 9000 3.2 4.0 80 4.9 4.9 100
THUMB DIVIDE 7980 1.8 2.3 78 4.6 3.7 124
TOGWOTEE PASS 9580 3.8 4.9 78 5.6 5.1 110
TWO OCEAN PLATEAU 9240 7.0 5.8 121 6.2 5.6 111
WILLOW CREEK 8380 2.3 4.7 49 7.7 6.5 118
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Basin wide percent of average 74 113
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 5.2 4.8 108 5.5 3.9 141
BLACK BEAR 8170 5.8 5.8 100 8.6 7.0 123
CANYON 7870 1.6 1.8 89 3.5 3.4 103
FISHER CREEK 9100 4.9 5.5 89 7.6 6.5 117
MADISON PLATEAU 7750 3.1 3.5 89 7.0 4.7 149
NORTHEAST ENTRANCE 7350 .9 1.2 75 3.1 2.8 111
PARKER PEAK 9400 4.5 4.6 98 6.7 3.9 172
SYLVAN LAKE 8420 2.6 4.0 65 6.7 4.8 140
THUMB DIVIDE 7980 1.8 2.3 78 4.6 3.7 124
TWO OCEAN PLATEAU 9240 7.0 5.8 121 6.2 5.6 111
WHISKEY CREEK 6800 2.0 2.1 95 5.6 4.0 140
WHITE MILL 8700 3.1 4.1 76 5.3 5.1 104
WOLVERINE 7650 3.0 1.5 200 4.4 3.1 142
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Basin wide percent of average 97 128
WIND RIVER
BURROUGHS CREEK 8750 1.6 2.3 70 2.8 3.3 85
CASTLE CREEK 8400 1.0 -M * 2.2 -M *
COLD SPRINGS 9630 1.3 2.2 59 2.5 3.2 78
DEER PARK 9700 2.2 3.7 59 4.9 5.1 96
HOBBS PARK 10100 3.5 3.9 90 3.8 3.5 109
LITTLE WARM 9370 .8 2.3 35 2.7 3.3 82
SOUTH PASS 9040 2.3 3.3 70 3.7 4.1 90
ST. LAWRENCE ALT 8620 .4 1.8 22 1.9 2.8 68
TOGWOTEE PASS 9580 3.8 4.9 78 5.6 5.1 110
TOWNSEND CREEK 8700 1.3 2.1 62 3.9 3.4 115
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Basin wide percent of average 65 94
BIGHORN BASIN
BALD MTN. 9380 5.5 4.5 122 5.1 4.0 128
BEAR TRAP MEADOW 8200 1.1 1.1 100 2.9 2.7 107
BLACKWATER 9780 5.9 5.3 111 6.0 4.9 122
BONE SPRINGS DIV 9350 5.6 4.2 133 5.6 3.8 147
EVENING STAR 9200 4.6 5.4 85 7.9 5.5 144
GRAVE SPRINGS 8550 .9 2.0 45 3.2 2.9 110
KIRWIN 9550 3.3 3.1 106 4.6 3.1 148
MARQUETTE 8760 .8 -M * 4.7 3.4 138
MIDDLE POWDER 7760 1.8 2.5 72 5.2 4.0 130
OWL CREEK 8975 1.3 1.5 87 2.2 1.8 122
POWDER RIVER PASS 9480 3.3 2.4 138 4.5 3.1 145
SHELL CREEK 9580 5.9 4.0 148 5.6 3.4 165
SYLVAN LAKE 8420 2.6 4.0 65 6.7 4.8 140
SYLVAN ROAD 7120 1.6 1.8 89 4.3 4.4 98
TIMBER CREEK 7950 .7 1.9 37 4.3 2.5 172
YOUNTS PEAK 8350 2.9 3.0 97 4.3 3.5 123
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Basin wide percent of average 101 133
SHOSHONE RIVER
BLACKWATER 9780 5.9 5.3 111 6.0 4.9 122
EVENING STAR 9200 4.6 5.4 85 7.9 5.5 144
KIRWIN 9550 3.3 3.1 106 4.6 3.1 148
MARQUETTE 8760 .8 -M * 4.7 3.4 138
SYLVAN LAKE 8420 2.6 4.0 65 6.7 4.8 140
SYLVAN ROAD 7120 1.6 1.8 89 4.3 4.4 98
YOUNTS PEAK 8350 2.9 3.0 97 4.3 3.5 123
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Basin wide percent of average 92 130
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.1 1.1 100 2.9 2.7 107
BIG GOOSE 7990 2.7 1.6 169 6.4 2.6 246
BONE SPRINGS DIV 9350 5.6 4.2 133 5.6 3.8 147
BURGESS JUNCTION 7880 2.9 2.7 107 5.8 3.4 171
CLOUD PEAK RESERVOIR 9860 4.1 2.8 146 5.9 4.0 148
DOME LAKE 8880 3.7 3.3 112 6.9 3.9 177
GRAVE SPRINGS 8550 .9 2.0 45 3.2 2.9 110
HANSEN SAWMILL 8360 1.4 1.4 100 3.3 2.7 122
LITTLE GOOSE 8870 3.4 -M * 7.1 -M *
MIDDLE POWDER 7760 1.8 2.5 72 5.2 4.0 130
POWDER RIVER PASS 9480 3.3 2.4 138 4.5 3.1 145
SOLDIER PARK 8720 1.3 -M * 4.3 -M *
SUCKER CREEK 8880 4.8 2.4 200 6.0 3.6 167
TIE CREEK 6870 1.2 1.1 109 6.3 3.2 197
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Basin wide percent of average 122 155
BELLE FOURCHE
BLIND PARK 6890 .8 1.5 53 1.9 3.7 51
COLE CANYON 5910 .1 1.6 6 1.8 2.6 69
NORTH RAPID CREEK 6130 1.3 1.1 118 1.1 3.3 33
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Basin wide percent of average 52 50
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 5.6 -M * 7.4 -M *
CINNABAR PARK 9574 2.9 3.6 81 5.5 4.7 117
COLUMBINE 9160 2.9 2.9 100 5.2 4.4 118
DIVIDE PEAK 8880 3.4 3.4 100 6.7 4.5 149
ELK RIVER 8700 2.3 1.7 135* 4.3 3.7 116
JOE WRIGHT 10120 2.8 4.7 60 6.7 5.8 116
NORTH FRENCH CREEK 10130 4.3 5.6 77 5.4 5.6 96
OLD BATTLE 10000 6.3 6.1 103 8.1 6.4 127
SAGE CREEK BASIN 7850 2.0 2.0 100 3.8 2.6 146
SOUTH BRUSH CREEK 8440 1.3 1.8 72 3.8 4.1 93
TOWER 10500 5.9 8.3 71 8.3 7.4 112
WEBBER SPRINGS 9250 4.2 4.3 98 7.1 5.5 129
WILLOW CREEK PASS 9540 2.3 2.5 92 3.7 3.3 112
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Basin wide percent of average 87 118
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 2.6 4.1 63 4.9 4.4 111
CASPER MTN. 7900 2.9 3.3 88 6.7 4.1 163
DEADMAN HILL 10220 5.4 3.8 142 5.5 4.0 138
DEER PARK 9700 2.2 3.7 59 4.9 5.1 96
LAPRELE CREEK 8375 1.5 2.2 68 3.9 3.3 118
RENO HILL 8400 3.1 3.1 100 4.9 4.0 122
ROACH 9700 3.7 2.8 132 5.7 3.9 146
SAND LAKE 10050 5.6 6.4 88 6.2 5.2 119
SOUTH PASS 9040 2.3 3.3 70 3.7 4.1 90
WINDY PEAK 7900 1.5 1.5 100 3.1 2.8 111
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Basin wide percent of average 90 121
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.9 1.2 242 4.0 3.2 125
DIVIDE PEAK 8880 3.4 3.4 100 6.7 4.5 149
OLD BATTLE 10000 6.3 6.1 103 8.1 6.4 127
SANDSTONE RS 8150 1.5 1.4 107* 3.5 4.1 85
WHISKEY PARK 8950 3.1 4.0 78 6.6 5.3 125
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Basin wide percent of average 107 123
UPPER GREEN RIVER
BIG SANDY OPENING 9080 2.1 2.6 81 3.1 3.1 100
BLIND BULL SUM 8650 2.3 4.3 53 3.4 4.2 81
EAST RIM DIVIDE 7930 .9 1.9 47 2.8 2.5 112
ELKHART PARK G.S. 9400 1.9 2.1 90 3.8 3.3 115
GROS VENTRE SUMMIT 8750 1.3 2.6 50 3.0 3.1 97
GUNSIGHT PASS 9820 2.1 -M * 3.7 -M *
KENDALL R.S. 7740 1.8 1.9 95 3.5 2.9 121
LOOMIS PARK 8240 1.4 2.6 54 3.8 3.4 112
NEW FORK LAKE 8340 1.8 1.6 112 3.5 2.8 125
POCKET CREEK 9360 2.1 -M * 3.3 -M *
SNIDER BASIN 8060 1.2 2.1 57 2.6 3.1 84
SPRING CREEK DIVIDE 9000 3.2 4.0 80 4.9 4.9 100
TRIPLE PEAK 8500 2.7 3.6 75 4.9 4.4 111
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Basin wide percent of average 70 104
LOWER GREEN RIVER
HAMS FORK 7840 .9 1.3 69 3.2 2.5 128
HEWINTA 9519 1.1 1.5 73 4.2 3.8 111
HICKERSON PARK 9145 1.0 1.0 100 4.9 2.6 188
HOLE-IN-ROCK 9150 1.3 1.0 130 4.5 2.4 188
INDIAN CREEK 9425 3.5 4.0 88 4.5 4.8 94
KELLEY R.S. 8180 2.0 2.5 80 4.4 3.9 113
STEEL CREEK PARK 10200 2.0 2.8 71 4.8 3.9 123
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Basin wide percent of average 84 128
UPPER BEAR RIVER
BUG LAKE 7950 2.0 2.6 77 4.5 4.0 112
HAYDEN FORK 9212 1.8 1.9 95 5.9 4.3 137
KELLEY R.S. 8180 2.0 2.5 80 4.4 3.9 113
LILY LAKE 9156 1.1 1.9 58 4.2 4.2 100
MONTE CRISTO 8960 3.0 3.3 91 5.1 5.0 102
SALT RIVER SUMMIT 7760 1.4 1.3 108* 3.3 3.4 97
TRIAL LAKE 9992 3.6 3.8 95 4.3 4.8 90
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Basin wide percent of average 86 107
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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 1971-2000.
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.
