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: DECEMBER 1 , 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 5.1 4.1 124 8.4 6.1 138
COTTONWOOD CREEK 7670 3.5 4.7 74 8.1 8.0 101
GRAND TARGHEE 9260 10.3 -M * 9.6 -M *
GRANITE CREEK 6770 3.6 3.4 106 5.6 5.4 104
GRASSY LAKE 7265 5.4 7.7 70 10.5 9.6 109
GROS VENTRE SUMMIT 8750 3.0 3.9 77 4.5 4.3 105
GUNSIGHT PASS 9820 3.8 -M * 5.2 -M *
LEWIS LAKE DIVIDE 7850 6.3 7.7 82 11.3 9.9 114
PHILLIPS BENCH 8200 4.7 6.4 73 7.1 7.4 96
SALT RIVER SUMMIT 7760 2.3 2.6 88 4.2 5.0 84
SNAKE RIVER STATION 6920 4.3 4.0 108 8.7 6.4 136
SPRING CREEK DIVIDE 9000 5.0 6.8 74 6.7 7.3 92
THUMB DIVIDE 7980 4.3 4.0 108 7.0 5.4 130
TOGWOTEE PASS 9580 6.3 7.0 90 8.1 7.3 111
TWO OCEAN PLATEAU 9240 11.1 8.3 134 9.8 8.2 120
WILLOW CREEK 8380 5.3 7.7 69 10.6 9.4 113
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Basin wide percent of average 90 111
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 7.4 7.0 106 7.8 5.9 132
BLACK BEAR 8170 9.0 9.6 94 11.5 10.5 110
CANYON 7870 3.1 3.2 97 5.2 4.8 108
FISHER CREEK 9100 10.1 9.1 111 11.9 9.8 121
MADISON PLATEAU 7750 6.0 6.1 98 9.9 7.2 138
NORTHEAST ENTRANCE 7350 1.9 2.5 76 4.3 4.0 108
PARKER PEAK 9400 7.3 6.7 109 9.3 5.5 169
SYLVAN LAKE 8420 4.9 6.4 77 9.1 7.1 128
THUMB DIVIDE 7980 4.3 4.0 108 7.0 5.4 130
TWO OCEAN PLATEAU 9240 11.1 8.3 134 9.8 8.2 120
WHISKEY CREEK 6800 4.3 3.8 113 7.8 5.9 132
WHITE MILL 8700 5.6 6.6 85 7.9 7.7 103
WOLVERINE 7650 4.3 3.0 143 6.0 4.5 133
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Basin wide percent of average 104 124
WIND RIVER
BURROUGHS CREEK 8750 3.5 3.8 92 4.5 4.9 92
CASTLE CREEK 8400 1.9 -M * 3.0 -M *
COLD SPRINGS 9630 2.8 3.1 90 4.1 4.2 98
DEER PARK 9700 3.1 4.5 69 6.2 7.1 87
HOBBS PARK 10100 5.4 5.3 102 5.3 4.6 115
LITTLE WARM 9370 2.1 3.4 62 4.4 4.6 96
SOUTH PASS 9040 3.9 4.9 80 5.2 6.0 87
ST. LAWRENCE ALT 8620 1.3 2.7 48 2.9 3.5 83
TOGWOTEE PASS 9580 6.3 7.0 90 8.1 7.3 111
TOWNSEND CREEK 8700 2.3 3.0 77 4.6 4.5 102
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Basin wide percent of average 81 97
BIGHORN BASIN
BALD MTN. 9380 6.8 5.9 115 6.7 5.3 126
BEAR TRAP MEADOW 8200 1.9 1.6 119 3.8 3.4 112
BLACKWATER 9780 9.7 7.8 124 9.4 7.2 131
BONE SPRINGS DIV 9350 7.3 5.3 138 7.3 4.9 149
EVENING STAR 9200 8.1 8.5 95 11.1 8.2 135
GRAVE SPRINGS 8550 2.4 2.7 89 4.4 3.6 122
KIRWIN 9550 5.4 4.2 129 6.7 4.1 163
MARQUETTE 8760 1.6 -M * 6.0 4.1 146
MIDDLE POWDER 7760 3.3 3.5 94 6.6 4.9 135
OWL CREEK 8975 1.8 1.9 95 2.9 2.2 132
POWDER RIVER PASS 9480 4.2 3.3 127 5.6 4.1 137
SHELL CREEK 9580 7.3 5.1 143 6.7 4.5 149
SYLVAN LAKE 8420 4.9 6.4 77 9.1 7.1 128
SYLVAN ROAD 7120 3.5 3.5 100 6.2 6.6 94
TIMBER CREEK 7950 2.1 2.3 91 5.5 3.0 183
YOUNTS PEAK 8350 4.9 4.7 104 6.2 5.2 119
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Basin wide percent of average 110 133
SHOSHONE RIVER
BLACKWATER 9780 9.7 7.8 124 9.4 7.2 131
EVENING STAR 9200 8.1 8.5 95 11.1 8.2 135
KIRWIN 9550 5.4 4.2 129 6.7 4.1 163
MARQUETTE 8760 1.6 -M * 6.0 4.1 146
SYLVAN LAKE 8420 4.9 6.4 77 9.1 7.1 128
SYLVAN ROAD 7120 3.5 3.5 100 6.2 6.6 94
YOUNTS PEAK 8350 4.9 4.7 104 6.2 5.2 119
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Basin wide percent of average 104 129
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.9 1.6 119 3.8 3.4 112
BIG GOOSE 7990 3.9 2.3 170 7.7 3.0 257
BONE SPRINGS DIV 9350 7.3 5.3 138 7.3 4.9 149
BURGESS JUNCTION 7880 4.3 3.5 123 7.3 4.2 174
CLOUD PEAK RESERVOIR 9860 5.8 3.8 153 7.4 4.9 151
DOME LAKE 8880 5.2 4.1 127 8.2 4.9 167
GRAVE SPRINGS 8550 2.4 2.7 89 4.4 3.6 122
HANSEN SAWMILL 8360 2.5 2.0 125 4.3 3.2 134
LITTLE GOOSE 8870 4.8 -M * 8.6 -M *
MIDDLE POWDER 7760 3.3 3.5 94 6.6 4.9 135
POWDER RIVER PASS 9480 4.2 3.3 127 5.6 4.1 137
SOLDIER PARK 8720 3.7 -M * 5.6 -M *
SUCKER CREEK 8880 6.1 3.2 191 7.3 4.5 162
TIE CREEK 6870 2.3 1.2 192 7.4 3.7 200
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Basin wide percent of average 135 157
BELLE FOURCHE
BLIND PARK 6890 2.0 2.0 100 2.9 4.5 64
COLE CANYON 5910 1.3 2.1 62 3.0 3.0 100
NORTH RAPID CREEK 6130 2.5 1.7 147 2.5 3.8 66
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Basin wide percent of average 100 74
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 8.0 -M * 9.8 -M *
CINNABAR PARK 9574 4.4 5.6 79 7.2 6.7 107
COLUMBINE 9160 4.5 5.0 90 6.9 6.4 108
DIVIDE PEAK 8880 4.9 5.1 96 8.2 6.2 132
ELK RIVER 8700 4.0 3.1 129 6.0 5.2 115
JOE WRIGHT 10120 4.2 6.3 67 8.3 7.7 108
NORTH FRENCH CREEK 10130 5.9 7.9 75 7.0 7.5 93
OLD BATTLE 10000 8.3 9.0 92 10.5 9.3 113
SAGE CREEK BASIN 7850 3.5 3.0 117 4.6 3.6 128
SOUTH BRUSH CREEK 8440 2.1 2.9 72 4.8 5.2 92
TOWER 10500 8.5 12.6 67 11.0 10.6 104
WEBBER SPRINGS 9250 5.7 6.6 86 9.0 7.8 115
WILLOW CREEK PASS 9540 2.5 3.6 69 4.5 4.4 102
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Basin wide percent of average 83 109
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.1 6.0 68 6.2 6.2 100
CASPER MTN. 7900 4.7 4.6 102 8.0 5.2 154
DEADMAN HILL 10220 6.9 5.0 138 7.0 5.3 132
DEER PARK 9700 3.1 4.5 69 6.2 7.1 87
LAPRELE CREEK 8375 2.2 3.2 69 4.7 4.3 109
RENO HILL 8400 4.7 4.3 109 6.4 5.1 125
ROACH 9700 5.1 4.3 119 7.3 5.2 140
SAND LAKE 10050 7.5 9.2 82 8.0 7.2 111
SOUTH PASS 9040 3.9 4.9 80 5.2 6.0 87
WINDY PEAK 7900 2.0 2.3 87 3.6 3.7 97
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Basin wide percent of average 92 113
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.9 1.9 205 5.0 4.4 114
DIVIDE PEAK 8880 4.9 5.1 96 8.2 6.2 132
OLD BATTLE 10000 8.3 9.0 92 10.5 9.3 113
SANDSTONE RS 8150 2.3 2.4 96 4.6 5.5 84
WHISKEY PARK 8950 5.2 6.1 85 8.9 7.8 114
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Basin wide percent of average 100 112
UPPER GREEN RIVER
BIG SANDY OPENING 9080 3.3 4.0 82 4.1 4.3 95
BLIND BULL SUM 8650 4.8 7.1 68 5.2 6.4 81
EAST RIM DIVIDE 7930 2.2 3.2 69 4.1 3.5 117
ELKHART PARK G.S. 9400 3.1 3.5 89 4.9 4.4 111
GROS VENTRE SUMMIT 8750 3.0 3.9 77 4.5 4.3 105
GUNSIGHT PASS 9820 3.8 -M * 5.2 -M *
KENDALL R.S. 7740 3.4 3.2 106 5.3 4.1 129
LOOMIS PARK 8240 3.4 4.4 77 5.7 4.9 116
NEW FORK LAKE 8340 3.1 2.8 111 4.4 3.8 116
POCKET CREEK 9360 2.7 -M * 3.9 -M *
SNIDER BASIN 8060 2.6 3.6 72 3.8 4.5 84
SPRING CREEK DIVIDE 9000 5.0 6.8 74 6.7 7.3 92
TRIPLE PEAK 8500 5.3 6.3 84 7.6 6.5 117
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Basin wide percent of average 80 104
LOWER GREEN RIVER
HAMS FORK 7840 2.3 2.5 92 4.3 3.5 123
HEWINTA 9519 2.1 2.2 95 5.1 4.9 104
HICKERSON PARK 9145 2.4 1.5 160 5.9 3.2 184
HOLE-IN-ROCK 9150 2.1 1.5 140 5.3 3.0 177
INDIAN CREEK 9425 5.4 6.7 81 6.1 7.0 87
KELLEY R.S. 8180 3.3 4.2 79 5.9 5.7 104
STEEL CREEK PARK 10200 3.0 4.0 75 5.7 5.2 110
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Basin wide percent of average 91 118
UPPER BEAR RIVER
BUG LAKE 7950 3.7 4.1 90 6.1 5.7 107
HAYDEN FORK 9212 2.8 3.1 90 7.2 6.1 118
KELLEY R.S. 8180 3.3 4.2 79 5.9 5.7 104
LILY LAKE 9156 2.2 2.9 76 5.3 5.7 93
MONTE CRISTO 8960 4.5 5.2 87 6.6 7.3 90
SALT RIVER SUMMIT 7760 2.3 2.6 88 4.2 5.0 84
TRIAL LAKE 9992 4.6 5.6 82 5.5 6.7 82
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Basin wide percent of average 84 97
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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.