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: DECEMBER 29 , 2010
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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 9.9 7.8 127 12.8 10.0 128
COTTONWOOD CREEK 7670 13.9 9.2 151 18.5 12.9 143
GRAND TARGHEE 9260 23.8 -M * 17.7 -M *
GRANITE CREEK 6770 10.4 7.2 144 12.7 9.1 140
GRASSY LAKE 7265 15.6 14.0 111 18.9 16.5 115
GROS VENTRE SUMMIT 8750 8.4 6.6 127 8.4 6.2 135
GUNSIGHT PASS 9820 8.9 -M * 9.2 -M *
LEWIS LAKE DIVIDE 7850 17.7 14.0 126 19.2 16.8 114
PHILLIPS BENCH 8200 15.7 12.0 131 17.2 12.9 133
SALT RIVER SUMMIT 7760 7.7 5.1 151 11.6 8.5 136
SNAKE RIVER STATION 6920 7.7 7.5 103 13.7 10.6 129
SPRING CREEK DIVIDE 9000 15.8 12.0 132 16.5 12.4 133
THUMB DIVIDE 7980 11.1 7.3 152 11.7 8.7 134
TOGWOTEE PASS 9580 14.6 11.2 130 15.7 11.6 135
TWO OCEAN PLATEAU 9240 18.6 13.0 143 15.1 13.0 116
WILLOW CREEK 8380 15.5 13.7 113 20.8 14.9 140
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Basin wide percent of average 130 130
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 12.2 11.0 111 12.0 9.6 125
BLACK BEAR 8170 21.0 16.4 128 21.9 16.9 130
CANYON 7870 8.0 5.7 140 9.3 7.5 124
FISHER CREEK 9100 18.0 15.6 115 17.9 16.4 109
MADISON PLATEAU 7750 13.7 10.7 128 15.5 11.9 130
NORTHEAST ENTRANCE 7350 5.6 4.7 119 7.7 6.2 124
PARKER PEAK 9400 13.5 10.1 134 14.0 8.0 175
SYLVAN LAKE 8420 11.4 10.0 114 14.3 10.7 134
THUMB DIVIDE 7980 11.1 7.3 152 11.7 8.7 134
TWO OCEAN PLATEAU 9240 18.6 13.0 143 15.1 13.0 116
WHISKEY CREEK 6800 9.3 7.1 131 11.6 9.5 122
WHITE MILL 8700 12.6 10.7 118 13.8 12.3 112
WOLVERINE 7650 7.1 5.5 129 7.3 6.8 107
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Basin wide percent of average 127 125
WIND RIVER
BURROUGHS CREEK 8750 7.7 6.5 118 8.1 7.7 105
CASTLE CREEK 8400 3.3 -M * 4.0 -M *
COLD SPRINGS 9630 4.5 4.5 100 4.5 5.6 80
DEER PARK 9700 11.5 6.7 172 12.3 10.6 116
HOBBS PARK 10100 8.0 7.5 107 7.2 6.2 116
LITTLE WARM 9370 6.3 5.2 121 6.6 6.5 102
SOUTH PASS 9040 9.2 8.0 115 8.4 8.9 94
ST. LAWRENCE ALT 8620 2.9 3.7 78 3.7 4.5 82
TOGWOTEE PASS 9580 14.6 11.2 130 15.7 11.6 135
TOWNSEND CREEK 8700 4.3 4.3 100 6.2 5.9 105
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Basin wide percent of average 120 108
BIGHORN BASIN
BALD MTN. 9380 9.8 9.4 104 8.9 8.2 109
BEAR TRAP MEADOW 8200 2.9 2.5 116 3.8 4.4 86
BLACKWATER 9780 13.8 11.6 119 13.1 10.5 125
BONE SPRINGS DIV 9350 7.3 7.6 96 7.0 7.0 100
EVENING STAR 9200 15.8 13.1 121 16.9 12.5 135
GRAVE SPRINGS 8550 3.4 3.8 89 4.0 4.7 85
KIRWIN 9550 6.5 5.8 112 7.1 5.7 125
MARQUETTE 8760 1.4 4.8 29 3.2 5.2 62
MIDDLE POWDER 7760 4.8 5.3 91 3.3 6.6 50
OWL CREEK 8975 2.2 2.6 85 2.6 2.8 93
POWDER RIVER PASS 9480 6.1 5.0 122 7.0 5.8 121
SHELL CREEK 9580 6.9 7.1 97 5.9 6.5 91
SYLVAN LAKE 8420 11.4 10.0 114 14.3 10.7 134
SYLVAN ROAD 7120 7.8 5.9 132 10.7 9.9 108
TIMBER CREEK 7950 1.9 3.0 63 2.4 3.7 65
YOUNTS PEAK 8350 9.1 7.6 120 8.4 7.9 106
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Basin wide percent of average 106 106
SHOSHONE RIVER
BLACKWATER 9780 13.8 11.6 119 13.1 10.5 125
EVENING STAR 9200 15.8 13.1 121 16.9 12.5 135
KIRWIN 9550 6.5 5.8 112 7.1 5.7 125
MARQUETTE 8760 1.4 4.8 29 3.2 5.2 62
SYLVAN LAKE 8420 11.4 10.0 114 14.3 10.7 134
SYLVAN ROAD 7120 7.8 5.9 132 10.7 9.9 108
YOUNTS PEAK 8350 9.1 7.6 120 8.4 7.9 106
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Basin wide percent of average 112 118
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.9 2.5 116 3.8 4.4 86
BIG GOOSE 7990 2.5 4.2 60 4.2 4.4 95
BONE SPRINGS DIV 9350 7.3 7.6 96 7.0 7.0 100
BURGESS JUNCTION 7880 3.4 5.3 64 4.8 5.9 81
CLOUD PEAK RESERVOIR 9860 6.4 5.6 114 7.0 6.3 111
DOME LAKE 8880 3.4 5.9 58 5.5 6.7 82
GRAVE SPRINGS 8550 3.4 3.8 89 4.0 4.7 85
HANSEN SAWMILL 8360 2.6 3.1 84 3.1 4.2 74
LITTLE GOOSE 8870 3.1 -M * 6.9 -M *
MIDDLE POWDER 7760 4.8 5.3 91 3.3 6.6 50
POWDER RIVER PASS 9480 6.1 5.0 122 7.0 5.8 121
SOLDIER PARK 8720 2.3 -M * 3.7 -M *
SUCKER CREEK 8880 4.8 5.1 94 5.5 6.5 85
TIE CREEK 6870 2.0 2.4 83 3.8 5.0 76
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Basin wide percent of average 89 87
BELLE FOURCHE
BLIND PARK 6890 2.5 3.3 76 7.9 6.0 132
COLE CANYON 5910 2.5 3.2 78 5.1 3.8 134
NORTH RAPID CREEK 6130 2.7 3.1 87 6.7 5.2 129
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Basin wide percent of average 80 131
UPPER N. PLATTE RIVER
COLUMBINE 9160 14.6 9.4 155 17.7 11.0 161
DIVIDE PEAK 8880 10.9 8.8 124 14.2 9.7 146
ELK RIVER 8700 10.4 6.8 153 13.3 8.5 156
JOE WRIGHT 10120 14.4 9.3 155 19.1 11.5 166
NORTH FRENCH CREEK 10130 20.4 12.8 159 20.2 11.6 174
OLD BATTLE 10000 22.0 14.2 155 23.0 15.3 150
SAGE CREEK BASIN 7850 6.9 5.1 135 10.0 5.6 179
SOUTH BRUSH CREEK 8440 9.1 4.9 186 12.3 7.5 164
TOWER 10500 26.7 19.8 135 27.3 17.2 159
WEBBER SPRINGS 9250 14.8 11.0 135 19.2 12.5 154
WILLOW CREEK PASS 9540 10.0 5.4 185 10.4 6.3 165
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Basin wide percent of average 149 160
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.3 10.3 139 15.7 9.8 160
CASPER MTN. 7900 5.0 6.7 75 7.9 7.1 111
DEADMAN HILL 10220 5.9 7.4 80 13.3 7.6 175
DEER PARK 9700 11.5 6.7 172 12.3 10.6 116
LAPRELE CREEK 8375 5.2 5.1 102 6.4 6.0 107
RENO HILL 8400 6.4 6.4 100 8.2 7.0 117
ROACH 9700 11.0 7.0 157 13.7 8.2 167
SAND LAKE 10050 18.4 14.4 128 17.8 11.1 160
SOUTH PASS 9040 9.2 8.0 115 8.4 8.9 94
WINDY PEAK 7900 3.9 3.4 115 6.4 5.4 119
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Basin wide percent of average 120 135
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.7 3.8 150 8.0 6.8 118
DIVIDE PEAK 8880 10.9 8.8 124 14.2 9.7 146
OLD BATTLE 10000 22.0 14.2 155 23.0 15.3 150
SANDSTONE RS 8150 6.1 4.9 124 13.1 8.5 154
WHISKEY PARK 8950 -M 10.5 * 19.9 12.6 158
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Basin wide percent of average 141 148
UPPER GREEN RIVER
BIG SANDY OPENING 9080 7.5 6.6 114 8.2 6.3 130
BLIND BULL SUM 8650 13.7 12.6 109 10.5 10.6 99
EAST RIM DIVIDE 7930 6.2 5.7 109 6.6 5.5 120
ELKHART PARK G.S. 9400 6.2 6.0 103 6.8 6.5 105
GROS VENTRE SUMMIT 8750 8.4 6.6 127 8.4 6.2 135
GUNSIGHT PASS 9820 8.9 -M * 9.2 -M *
KENDALL R.S. 7740 6.4 6.3 102 8.2 6.6 124
LOOMIS PARK 8240 9.2 7.7 119 10.2 8.0 128
NEW FORK LAKE 8340 5.8 5.2 112 5.8 5.7 102
POCKET CREEK 9360 6.3 -M * 7.5 -M *
SNIDER BASIN 8060 9.6 6.6 145 10.3 7.6 136
SPRING CREEK DIVIDE 9000 15.8 12.0 132 16.5 12.4 133
TRIPLE PEAK 8500 14.2 11.4 125 16.1 10.7 150
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Basin wide percent of average 119 125
LOWER GREEN RIVER
HAMS FORK 7840 7.0 5.2 135 8.1 5.5 147
HEWINTA 9519 5.4 3.9 138 9.5 6.8 140
HICKERSON PARK 9145 2.8 2.7 104 4.8 4.1 117
HOLE-IN-ROCK 9150 2.8 2.5 112 5.2 3.8 137
INDIAN CREEK 9425 15.8 11.9 133 14.9 11.6 128
KELLEY R.S. 8180 10.1 7.3 138 12.8 9.6 133
STEEL CREEK PARK 10200 8.3 6.4 130 11.3 7.3 155
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Basin wide percent of average 131 137
UPPER BEAR RIVER
BUG LAKE 7950 13.9 7.8 178 16.3 8.8 185
HAYDEN FORK 9212 10.1 6.0 168 16.6 9.6 173
KELLEY R.S. 8180 10.1 7.3 138 12.8 9.6 133
LILY LAKE 9156 9.6 5.2 185 12.6 8.4 150
MONTE CRISTO 8960 17.3 10.4 166 18.9 11.6 163
SALT RIVER SUMMIT 7760 7.7 5.1 151 11.6 8.5 136
TRIAL LAKE 9992 19.5 10.0 195 19.2 10.8 178
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Basin wide percent of average 170 160
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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.