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 FRIDAY: DECEMBER 24 , 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 9.6 7.1 135 12.3 9.3 132
COTTONWOOD CREEK 7670 13.9 8.4 165 18.4 12.0 153
GRAND TARGHEE 9260 23.2 -M * 17.3 -M *
GRANITE CREEK 6770 10.2 6.5 157 12.6 8.5 148
GRASSY LAKE 7265 15.0 12.8 117 18.3 15.2 120
GROS VENTRE SUMMIT 8750 8.3 6.1 136 8.3 5.8 143
GUNSIGHT PASS 9820 8.8 -M * 9.0 -M *
LEWIS LAKE DIVIDE 7850 16.7 12.9 129 18.7 15.6 120
PHILLIPS BENCH 8200 15.4 11.1 139 16.9 11.9 142
SALT RIVER SUMMIT 7760 7.7 4.6 167 11.5 7.9 146
SNAKE RIVER STATION 6920 7.5 6.9 109 13.4 9.9 135
SPRING CREEK DIVIDE 9000 15.6 11.2 139 16.4 11.5 143
THUMB DIVIDE 7980 10.6 6.7 158 11.3 8.1 140
TOGWOTEE PASS 9580 14.4 10.4 138 15.5 10.8 144
TWO OCEAN PLATEAU 9240 18.2 12.2 149 14.9 12.2 122
WILLOW CREEK 8380 15.3 12.6 121 20.5 13.9 147
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Basin wide percent of average 138 137
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 11.9 10.2 117 11.8 9.0 131
BLACK BEAR 8170 19.3 15.3 126 20.5 15.7 131
CANYON 7870 7.5 5.3 142 9.0 7.0 129
FISHER CREEK 9100 16.9 14.6 116 17.3 15.2 114
MADISON PLATEAU 7750 12.5 9.9 126 14.6 11.2 130
NORTHEAST ENTRANCE 7350 5.3 4.4 120 7.6 5.8 131
PARKER PEAK 9400 13.2 9.4 140 13.5 7.6 178
SYLVAN LAKE 8420 11.0 9.5 116 13.9 10.1 138
THUMB DIVIDE 7980 10.6 6.7 158 11.3 8.1 140
TWO OCEAN PLATEAU 9240 18.2 12.2 149 14.9 12.2 122
WHISKEY CREEK 6800 8.4 6.6 127 11.0 8.9 124
WHITE MILL 8700 12.2 10.1 121 13.4 11.6 116
WOLVERINE 7650 7.0 5.0 140 7.2 6.4 113
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Basin wide percent of average 129 129
WIND RIVER
BURROUGHS CREEK 8750 7.6 6.0 127 8.0 7.2 111
CASTLE CREEK 8400 3.2 -M * 3.8 -M *
COLD SPRINGS 9630 4.4 4.2 105 4.4 5.3 83
DEER PARK 9700 11.3 6.0 188 12.3 10.0 123
HOBBS PARK 10100 7.8 7.1 110 6.9 6.0 115
LITTLE WARM 9370 6.2 4.8 129 6.4 6.2 103
SOUTH PASS 9040 9.1 7.4 123 8.2 8.5 96
ST. LAWRENCE ALT 8620 2.7 3.5 77 3.6 4.4 82
TOGWOTEE PASS 9580 14.4 10.4 138 15.5 10.8 144
TOWNSEND CREEK 8700 4.1 4.0 103 6.1 5.7 107
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Basin wide percent of average 127 111
BIGHORN BASIN
BALD MTN. 9380 9.8 8.8 111 8.9 7.6 117
BEAR TRAP MEADOW 8200 2.8 2.4 117 3.9 4.2 93
BLACKWATER 9780 13.3 10.9 122 12.6 10.0 126
BONE SPRINGS DIV 9350 7.2 7.2 100 6.8 6.6 103
EVENING STAR 9200 14.9 12.3 121 16.3 11.7 139
GRAVE SPRINGS 8550 3.4 3.7 92 4.0 4.5 89
KIRWIN 9550 6.4 5.4 119 6.9 5.5 125
MARQUETTE 8760 1.4 4.7 30 3.2 5.0 64
MIDDLE POWDER 7760 4.8 5.2 92 3.2 6.3 51
OWL CREEK 8975 2.1 2.5 84 2.5 2.7 93
POWDER RIVER PASS 9480 6.0 4.7 128 6.8 5.5 124
SHELL CREEK 9580 6.8 6.8 100 5.8 6.1 95
SYLVAN LAKE 8420 11.0 9.5 116 13.9 10.1 138
SYLVAN ROAD 7120 7.6 5.5 138 10.4 9.4 111
TIMBER CREEK 7950 1.8 2.9 62 2.4 3.6 67
YOUNTS PEAK 8350 8.8 7.0 126 8.2 7.4 111
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Basin wide percent of average 109 109
SHOSHONE RIVER
BLACKWATER 9780 13.3 10.9 122 12.6 10.0 126
EVENING STAR 9200 14.9 12.3 121 16.3 11.7 139
KIRWIN 9550 6.4 5.4 119 6.9 5.5 125
MARQUETTE 8760 1.4 4.7 30 3.2 5.0 64
SYLVAN LAKE 8420 11.0 9.5 116 13.9 10.1 138
SYLVAN ROAD 7120 7.6 5.5 138 10.4 9.4 111
YOUNTS PEAK 8350 8.8 7.0 126 8.2 7.4 111
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Basin wide percent of average 115 121
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.8 2.4 117 3.9 4.2 93
BIG GOOSE 7990 2.4 3.9 62 4.0 4.2 95
BONE SPRINGS DIV 9350 7.2 7.2 100 6.8 6.6 103
BURGESS JUNCTION 7880 3.3 5.1 65 4.7 5.6 84
CLOUD PEAK RESERVOIR 9860 6.3 5.3 119 6.6 6.0 110
DOME LAKE 8880 3.2 5.6 57 5.4 6.4 84
GRAVE SPRINGS 8550 3.4 3.7 92 4.0 4.5 89
HANSEN SAWMILL 8360 2.4 2.9 83 2.9 4.0 73
LITTLE GOOSE 8870 3.1 -M * 6.8 -M *
MIDDLE POWDER 7760 4.8 5.2 92 3.2 6.3 51
POWDER RIVER PASS 9480 6.0 4.7 128 6.8 5.5 124
SOLDIER PARK 8720 1.9 -M * 3.5 -M *
SUCKER CREEK 8880 4.8 4.8 100 5.5 6.1 90
TIE CREEK 6870 2.0 2.2 91 3.7 4.7 79
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Basin wide percent of average 92 90
BELLE FOURCHE
BLIND PARK 6890 2.6 3.0 87 7.9 5.7 139
COLE CANYON 5910 2.7 3.0 90 5.1 3.7 138
NORTH RAPID CREEK 6130 2.8 2.9 97 6.7 4.9 137
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Basin wide percent of average 91 138
UPPER N. PLATTE RIVER
COLUMBINE 9160 14.4 8.6 167 17.7 10.1 175
DIVIDE PEAK 8880 10.9 8.1 135 14.4 9.0 160
ELK RIVER 8700 10.4 6.0 173 13.3 7.9 168
JOE WRIGHT 10120 14.4 8.7 166 19.0 10.8 176
NORTH FRENCH CREEK 10130 20.2 11.9 170 20.1 10.8 186
OLD BATTLE 10000 21.3 13.3 160 23.1 14.3 162
SAGE CREEK BASIN 7850 7.0 4.7 149 10.0 5.2 192
SOUTH BRUSH CREEK 8440 9.1 4.6 198 12.4 7.1 175
TOWER 10500 26.2 18.5 142 27.2 16.0 170
WEBBER SPRINGS 9250 14.6 10.3 142 19.0 11.7 162
WILLOW CREEK PASS 9540 10.0 5.1 196 10.5 5.9 178
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Basin wide percent of average 159 172
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 14.1 9.5 148 15.7 9.1 173
CASPER MTN. 7900 5.1 6.4 80 7.8 6.8 115
DEADMAN HILL 10220 6.8 6.9 99 13.2 7.2 183
DEER PARK 9700 11.3 6.0 188 12.3 10.0 123
LAPRELE CREEK 8375 5.2 4.8 108 6.4 5.6 114
RENO HILL 8400 6.4 6.0 107 8.3 6.6 126
ROACH 9700 10.9 6.5 168 13.7 7.6 180
SAND LAKE 10050 18.0 13.5 133 17.7 10.4 170
SOUTH PASS 9040 9.1 7.4 123 8.2 8.5 96
WINDY PEAK 7900 4.0 3.2 125 6.4 5.1 125
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Basin wide percent of average 129 143
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.9 3.3 179 8.3 6.4 130
DIVIDE PEAK 8880 10.9 8.1 135 14.4 9.0 160
OLD BATTLE 10000 21.3 13.3 160 23.1 14.3 162
SANDSTONE RS 8150 6.3 4.4 143 12.9 7.9 163
WHISKEY PARK 8950 -M 9.6 * -M 11.7 *
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Basin wide percent of average 153 156
UPPER GREEN RIVER
BIG SANDY OPENING 9080 7.3 6.2 118 8.0 6.0 133
BLIND BULL SUM 8650 13.5 11.7 115 10.4 9.9 105
EAST RIM DIVIDE 7930 6.2 5.2 119 6.5 5.1 127
ELKHART PARK G.S. 9400 6.1 5.6 109 6.7 6.1 110
GROS VENTRE SUMMIT 8750 8.3 6.1 136 8.3 5.8 143
GUNSIGHT PASS 9820 8.8 -M * 9.0 -M *
KENDALL R.S. 7740 6.3 5.8 109 8.0 6.1 131
LOOMIS PARK 8240 9.1 7.2 126 10.1 7.4 136
NEW FORK LAKE 8340 5.7 4.8 119 5.7 5.3 108
POCKET CREEK 9360 6.2 -M * 7.4 -M *
SNIDER BASIN 8060 9.5 6.1 156 10.2 7.0 146
SPRING CREEK DIVIDE 9000 15.6 11.2 139 16.4 11.5 143
TRIPLE PEAK 8500 13.9 10.5 132 15.9 9.9 161
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Basin wide percent of average 126 133
LOWER GREEN RIVER
HAMS FORK 7840 6.9 4.7 147 7.8 5.2 150
HEWINTA 9519 5.4 3.5 154 9.4 6.5 145
HICKERSON PARK 9145 2.7 2.5 108 4.7 4.0 118
HOLE-IN-ROCK 9150 2.7 2.3 117 5.2 3.7 141
INDIAN CREEK 9425 15.6 11.0 142 14.8 10.8 137
KELLEY R.S. 8180 10.1 6.8 149 12.8 8.9 144
STEEL CREEK PARK 10200 8.2 6.0 137 11.2 6.9 162
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Basin wide percent of average 140 143
UPPER BEAR RIVER
BUG LAKE 7950 13.9 7.1 196 16.3 8.3 196
HAYDEN FORK 9212 10.3 5.4 191 16.9 9.0 188
KELLEY R.S. 8180 10.1 6.8 149 12.8 8.9 144
LILY LAKE 9156 9.5 4.8 198 12.6 7.9 159
MONTE CRISTO 8960 17.2 9.4 183 18.7 10.9 172
SALT RIVER SUMMIT 7760 7.7 4.6 167 11.5 7.9 146
TRIAL LAKE 9992 19.2 9.2 209 18.8 10.0 188
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Basin wide percent of average 186 171
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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.