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 SUNDAY: DECEMBER 12 , 2010
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 7.4 5.6 132 10.1 7.7 131
COTTONWOOD CREEK 7670 11.0 6.5 169 15.1 9.9 153
GRAND TARGHEE 9260 19.0 -M * 14.2 -M *
GRANITE CREEK 6770 6.9 4.9 141 9.4 6.9 136
GRASSY LAKE 7265 11.4 10.1 113 14.6 12.3 119
GROS VENTRE SUMMIT 8750 6.5 5.0 130 6.6 5.1 129
GUNSIGHT PASS 9820 6.8 -M * 7.2 -M *
LEWIS LAKE DIVIDE 7850 12.9 10.2 126 15.1 12.7 119
PHILLIPS BENCH 8200 12.1 8.7 139 13.6 9.6 142
SALT RIVER SUMMIT 7760 5.6 3.6 156 9.1 6.4 142
SNAKE RIVER STATION 6920 6.1 5.5 111 11.1 8.1 137
SPRING CREEK DIVIDE 9000 12.0 9.0 133 12.9 9.3 139
THUMB DIVIDE 7980 7.8 5.3 147 8.8 6.7 131
TOGWOTEE PASS 9580 11.8 8.7 136 12.8 9.0 142
TWO OCEAN PLATEAU 9240 15.0 10.2 147 11.7 10.2 115
WILLOW CREEK 8380 11.4 10.1 113 16.4 11.6 141
----- -----
Basin wide percent of average 133 133
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 9.4 8.6 109 9.4 7.5 125
BLACK BEAR 8170 15.4 12.5 123 17.1 13.0 132
CANYON 7870 6.0 4.3 140 7.3 5.9 124
FISHER CREEK 9100 12.9 12.1 107 13.5 12.4 109
MADISON PLATEAU 7750 9.6 8.1 119 11.7 9.3 126
NORTHEAST ENTRANCE 7350 3.7 3.5 106 5.9 4.9 120
PARKER PEAK 9400 10.2 8.1 126 10.9 6.6 165
SYLVAN LAKE 8420 7.9 8.0 99 10.6 8.7 122
THUMB DIVIDE 7980 7.8 5.3 147 8.8 6.7 131
TWO OCEAN PLATEAU 9240 15.0 10.2 147 11.7 10.2 115
WHISKEY CREEK 6800 6.2 5.2 119 8.9 7.4 120
WHITE MILL 8700 9.4 8.4 112 10.5 9.7 108
WOLVERINE 7650 5.1 4.0 128 5.6 5.5 102
----- -----
Basin wide percent of average 121 122
WIND RIVER
BURROUGHS CREEK 8750 -M 5.1 * 6.0 6.0 100
CASTLE CREEK 8400 2.5 -M * 3.1 -M *
COLD SPRINGS 9630 3.5 3.7 95 3.5 4.8 73
DEER PARK 9700 8.6 5.2 165 9.5 8.5 112
HOBBS PARK 10100 6.5 6.3 103 6.0 5.3 113
LITTLE WARM 9370 4.7 4.2 112 4.7 5.4 87
SOUTH PASS 9040 6.8 6.4 106 6.4 7.3 88
ST. LAWRENCE ALT 8620 2.1 3.2 66 3.0 3.9 77
TOGWOTEE PASS 9580 11.8 8.7 136 12.8 9.0 142
TOWNSEND CREEK 8700 3.5 3.5 100 5.5 5.1 108
----- -----
Basin wide percent of average 115 104
BIGHORN BASIN
BALD MTN. 9380 8.0 7.1 113 6.9 6.4 108
BEAR TRAP MEADOW 8200 1.9 2.0 95 2.9 3.8 76
BLACKWATER 9780 10.8 9.6 113 10.1 8.7 116
BONE SPRINGS DIV 9350 5.7 6.1 93 4.5 5.7 79
EVENING STAR 9200 11.3 10.7 106 12.9 10.0 129
GRAVE SPRINGS 8550 2.8 3.0 93 3.4 4.1 83
KIRWIN 9550 5.6 4.9 114 6.0 4.8 125
MARQUETTE 8760 1.4 4.2 33 2.8 4.6 61
MIDDLE POWDER 7760 4.3 4.1 105 2.7 5.6 48
OWL CREEK 8975 1.7 2.2 77 2.1 2.5 84
POWDER RIVER PASS 9480 4.7 3.9 121 5.5 4.8 115
SHELL CREEK 9580 5.5 5.8 95 4.8 5.3 91
SYLVAN LAKE 8420 7.9 8.0 99 10.6 8.7 122
SYLVAN ROAD 7120 4.9 4.6 107 7.5 8.2 91
TIMBER CREEK 7950 1.7 2.5 68 2.2 3.3 67
YOUNTS PEAK 8350 7.0 6.0 117 6.4 6.2 103
----- -----
Basin wide percent of average 101 98
SHOSHONE RIVER
BLACKWATER 9780 10.8 9.6 113 10.1 8.7 116
EVENING STAR 9200 11.3 10.7 106 12.9 10.0 129
KIRWIN 9550 5.6 4.9 114 6.0 4.8 125
MARQUETTE 8760 1.4 4.2 33 2.8 4.6 61
SYLVAN LAKE 8420 7.9 8.0 99 10.6 8.7 122
SYLVAN ROAD 7120 4.9 4.6 107 7.5 8.2 91
YOUNTS PEAK 8350 7.0 6.0 117 6.4 6.2 103
----- -----
Basin wide percent of average 102 110
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.9 2.0 95 2.9 3.8 76
BIG GOOSE 7990 1.9 3.1 61 3.5 3.7 95
BONE SPRINGS DIV 9350 5.7 6.1 93 4.5 5.7 79
BURGESS JUNCTION 7880 2.9 4.1 71 4.2 4.9 86
CLOUD PEAK RESERVOIR 9860 5.4 4.4 123 5.4 5.5 98
DOME LAKE 8880 2.5 4.8 52 4.5 5.7 79
GRAVE SPRINGS 8550 2.8 3.0 93 3.4 4.1 83
HANSEN SAWMILL 8360 1.6 2.5 64 2.3 3.6 64
LITTLE GOOSE 8870 2.6 -M * 6.1 -M *
MIDDLE POWDER 7760 4.3 4.1 105 2.7 5.6 48
POWDER RIVER PASS 9480 4.7 3.9 121 5.5 4.8 115
SOLDIER PARK 8720 1.4 -M * 3.0 -M *
SUCKER CREEK 8880 4.0 3.8 105 4.2 5.3 79
TIE CREEK 6870 1.8 1.4 129 3.4 4.2 81
----- -----
Basin wide percent of average 91 82
BELLE FOURCHE
BLIND PARK 6890 1.6 2.3 70 7.0 5.1 137
COLE CANYON 5910 2.3 2.6 88 4.5 3.3 136
NORTH RAPID CREEK 6130 2.3 2.3 100 6.0 4.3 140
----- -----
Basin wide percent of average 86 138
UPPER N. PLATTE RIVER
COLUMBINE 9160 10.6 6.6 161 13.8 8.2 168
DIVIDE PEAK 8880 6.9 6.5 106 10.5 7.6 138
ELK RIVER 8700 5.8 4.4 132 9.3 6.5 143
JOE WRIGHT 10120 10.7 7.4 145 15.6 9.2 170
NORTH FRENCH CREEK 10130 15.2 9.8 155 15.6 9.1 171
OLD BATTLE 10000 14.1 11.2 126 15.9 11.7 136
SAGE CREEK BASIN 7850 4.1 3.8 108 7.3 4.4 166
SOUTH BRUSH CREEK 8440 6.4 3.7 173 9.6 6.1 157
TOWER 10500 19.0 15.6 122 21.0 13.3 158
WEBBER SPRINGS 9250 9.1 8.5 107 13.3 9.6 139
WILLOW CREEK PASS 9540 6.7 4.3 156 7.8 5.2 150
----- -----
Basin wide percent of average 133 154
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 9.6 7.6 126 11.3 7.6 149
CASPER MTN. 7900 3.4 5.5 62 6.3 6.0 105
DEADMAN HILL 10220 6.0 5.9 102 10.5 6.2 169
DEER PARK 9700 8.6 5.2 165 9.5 8.5 112
LAPRELE CREEK 8375 3.2 4.0 80 4.7 4.9 96
RENO HILL 8400 4.6 5.1 90 6.5 5.8 112
ROACH 9700 7.0 5.3 132 9.6 6.4 150
SAND LAKE 10050 13.8 11.4 121 13.4 8.8 152
SOUTH PASS 9040 6.8 6.4 106 6.4 7.3 88
WINDY PEAK 7900 2.6 2.8 93 5.1 4.4 116
----- -----
Basin wide percent of average 111 126
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.4 2.4 142 5.8 5.4 107
DIVIDE PEAK 8880 6.9 6.5 106 10.5 7.6 138
OLD BATTLE 10000 14.1 11.2 126 15.9 11.7 136
SANDSTONE RS 8150 3.0 3.3 91 9.2 6.7 137
WHISKEY PARK 8950 5.0 7.8 64 13.9 9.8 142
----- -----
Basin wide percent of average 104 134
UPPER GREEN RIVER
BIG SANDY OPENING 9080 5.3 5.1 104 6.1 5.1 120
BLIND BULL SUM 8650 10.2 9.3 110 7.5 8.2 91
EAST RIM DIVIDE 7930 4.2 4.2 100 4.6 4.3 107
ELKHART PARK G.S. 9400 4.2 4.5 93 4.9 5.2 94
GROS VENTRE SUMMIT 8750 6.5 5.0 130 6.6 5.1 129
GUNSIGHT PASS 9820 6.8 -M * 7.2 -M *
KENDALL R.S. 7740 4.1 4.4 93 5.9 5.0 118
LOOMIS PARK 8240 6.4 5.8 110 7.4 6.1 121
NEW FORK LAKE 8340 4.1 3.7 111 4.2 4.5 93
POCKET CREEK 9360 4.5 -M * 5.6 -M *
SNIDER BASIN 8060 7.0 4.8 146 8.1 5.7 142
SPRING CREEK DIVIDE 9000 12.0 9.0 133 12.9 9.3 139
TRIPLE PEAK 8500 10.5 8.4 125 12.6 8.2 154
----- -----
Basin wide percent of average 116 121
LOWER GREEN RIVER
HAMS FORK 7840 4.7 3.5 134 5.9 4.3 137
HEWINTA 9519 2.9 2.8 104 6.7 5.8 116
HICKERSON PARK 9145 1.5 2.0 75 3.6 3.6 100
HOLE-IN-ROCK 9150 1.7 1.9 89 3.9 3.3 118
INDIAN CREEK 9425 11.9 8.8 135 11.5 8.8 131
KELLEY R.S. 8180 7.5 5.5 136 10.0 7.2 139
STEEL CREEK PARK 10200 4.8 4.9 98 8.0 6.0 133
----- -----
Basin wide percent of average 119 127
UPPER BEAR RIVER
BUG LAKE 7950 8.6 5.4 159 11.5 7.0 164
HAYDEN FORK 9212 5.6 4.1 137 12.0 7.6 158
KELLEY R.S. 8180 7.5 5.5 136 10.0 7.2 139
LILY LAKE 9156 6.2 3.8 163 9.1 6.8 134
MONTE CRISTO 8960 11.1 7.1 156 14.0 9.1 154
SALT RIVER SUMMIT 7760 5.6 3.6 156 9.1 6.4 142
TRIAL LAKE 9992 11.3 7.3 155 13.4 8.3 161
----- -----
Basin wide percent of average 152 151
-----------------------------------------------------------------------------
-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.
----------------------------------------------------------------------------
-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.