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 SATURDAY: NOVEMBER 7 , 2009
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 .5 1.1 45 2.5 2.6 96
COTTONWOOD CREEK 7670 .6 1.4 43 4.4 3.8 116
GRAND TARGHEE 9260 6.2 -M * 5.7 -M *
GRANITE CREEK 6770 .1 .8 12 2.6 2.3 113
GRASSY LAKE 7265 1.6 2.2 73 4.1 4.3 95
GROS VENTRE SUMMIT 8750 2.2 1.8 122 2.4 2.3 104
GUNSIGHT PASS 9820 1.9 -M * 3.1 -M *
LEWIS LAKE DIVIDE 7850 -M 2.0 * -M 4.1 *
PHILLIPS BENCH 8200 1.4 2.1 67 3.4 3.1 110
SALT RIVER SUMMIT 7760 .0 .6 0 2.5 2.4 104
SNAKE RIVER STATION 6920 .3 1.0 30 3.2 2.9 110
SPRING CREEK DIVIDE 9000 3.4 2.2 155 4.1 3.3 124
THUMB DIVIDE 7980 1.1 1.2 92 4.2 2.6 162
TOGWOTEE PASS 9580 4.2 3.3 127 4.3 3.5 123
TWO OCEAN PLATEAU 9240 5.1 3.9 131 4.0 3.9 103
WILLOW CREEK 8380 2.0 2.7 74 5.5 4.6 120
----- -----
Basin wide percent of average 93 113
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 4.2 3.4 124 3.5 2.7 130
BLACK BEAR 8170 4.7 3.5 134 6.0 4.6 130
CANYON 7870 1.5 1.0 150 3.1 2.3 135
FISHER CREEK 9100 5.5 3.6 153 6.0 4.3 140
MADISON PLATEAU 7750 2.2 2.1 105 5.2 3.2 162
NORTHEAST ENTRANCE 7350 .2 .5 40 3.0 1.9 158
PARKER PEAK 9400 4.9 3.2 153 3.9 2.8 139
SYLVAN LAKE 8420 1.5 2.6 58 3.2 3.2 100
THUMB DIVIDE 7980 1.1 1.2 92 4.2 2.6 162
TWO OCEAN PLATEAU 9240 5.1 3.9 131 4.0 3.9 103
WHISKEY CREEK 6800 .3 1.1 27 3.2 2.8 114
WHITE MILL 8700 4.5 2.6 173 4.3 3.4 126
WOLVERINE 7650 .2 .8 25 2.2 2.2 100
----- -----
Basin wide percent of average 122 130
WIND RIVER
BURROUGHS CREEK 8750 3.0 1.4 214 2.9 2.1 138
COLD SPRINGS 9630 2.5 1.4 179 3.0 2.4 125
DEER PARK 9700 4.6 3.0 153 5.8 3.3 176
HOBBS PARK 10100 5.0 2.7 185 4.8 2.7 178
LITTLE WARM 9370 1.9 1.4 136 2.4 2.2 109
SOUTH PASS 9040 3.9 2.1 186 4.9 2.8 175
ST. LAWRENCE ALT 8620 2.0 1.2 167 3.7 2.1 176
TOGWOTEE PASS 9580 4.2 3.3 127 4.3 3.5 123
TOWNSEND CREEK 8700 3.3 1.4 236 4.9 2.6 188
----- -----
Basin wide percent of average 170 155
BIGHORN BASIN
BALD MTN. 9380 4.0 3.4 118 3.4 2.9 117
BEAR TRAP MEADOW 8200 1.3 .8 162 2.2 2.1 105
BLACKWATER 9780 4.9 3.7 132 4.2 3.4 124
BONE SPRINGS DIV 9350 3.3 3.2 103 3.2 3.0 107
EVENING STAR 9200 4.8 3.5 137 5.9 3.6 164
GRAVE SPRINGS 8550 2.5 1.6 156 3.6 2.4 150
KIRWIN 9550 3.1 2.4 129 2.6 2.3 113
MARQUETTE 8760 2.8 2.3 122 3.0 2.7 111
MIDDLE POWDER 7760 2.5 1.7 147 3.2 3.1 103
OWL CREEK 8975 2.4 1.1 218 2.0 1.4 143
POWDER RIVER PASS 9480 2.0 1.7 118 2.4 2.3 104
SHELL CREEK 9580 3.5 3.2 109 3.0 2.5 120
SYLVAN LAKE 8420 1.5 2.6 58 3.2 3.2 100
SYLVAN ROAD 7120 .4 .9 44 2.7 2.7 100
TIMBER CREEK 7950 1.2 1.5 80 2.5 1.9 132
YOUNTS PEAK 8350 2.6 1.9 137 2.3 2.4 96
----- -----
Basin wide percent of average 121 118
SHOSHONE RIVER
BLACKWATER 9780 4.9 3.7 132 4.2 3.4 124
EVENING STAR 9200 4.8 3.5 137 5.9 3.6 164
KIRWIN 9550 3.1 2.4 129 2.6 2.3 113
MARQUETTE 8760 2.8 2.3 122 3.0 2.7 111
SYLVAN LAKE 8420 1.5 2.6 58 3.2 3.2 100
SYLVAN ROAD 7120 .4 .9 44 2.7 2.7 100
YOUNTS PEAK 8350 2.6 1.9 137 2.3 2.4 96
----- -----
Basin wide percent of average 116 118
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.3 .8 162 2.2 2.1 105
BIG GOOSE 7990 1.7 1.1 155 3.2 2.3 139
BONE SPRINGS DIV 9350 3.3 3.2 103 3.2 3.0 107
BURGESS JUNCTION 7880 3.0 2.0 150 3.7 2.6 142
CLOUD PEAK RESERVOIR 9860 3.4 2.1 162 3.3 3.1 106
DOME LAKE 8880 2.2 2.4 92 3.3 3.0 110
GRAVE SPRINGS 8550 2.5 1.6 156 3.6 2.4 150
HANSEN SAWMILL 8360 1.3 1.1 118 2.2 2.2 100
MIDDLE POWDER 7760 2.5 1.7 147 3.2 3.1 103
POWDER RIVER PASS 9480 2.0 1.7 118 2.4 2.3 104
SUCKER CREEK 8880 3.5 1.8 194 4.2 2.9 145
TIE CREEK 6870 .5 1.1 45 3.9 2.8 139
----- -----
Basin wide percent of average 132 121
BELLE FOURCHE
BLIND PARK 6890 1.0 1.1 91 4.1 3.0 137
COLE CANYON 5910 .0 1.2 0 4.2 2.1 200
NORTH RAPID CREEK 6130 .9 .7 129 4.0 2.8 143
----- -----
Basin wide percent of average 63 156
UPPER N. PLATTE RIVER
COLUMBINE 9160 1.1 1.5 73 4.0 3.0 133
DIVIDE PEAK 8880 2.4 2.3 104 5.3 3.3 161
ELK RIVER 8700 .2 .9 22 3.2 2.7 119
JOE WRIGHT 10120 3.3 3.3 100 4.9 4.2 117
NORTH FRENCH CREEK 10130 6.9 3.9 177 7.2 4.1 176
OLD BATTLE 10000 7.3 4.0 182 7.7 4.5 171
SAGE CREEK BASIN 7850 1.3 1.3 100 2.8 1.9 147
SOUTH BRUSH CREEK 8440 .8 1.1 73 4.2 3.1 135
TOWER 10500 7.3 5.0 146 7.4 5.1 145
WEBBER SPRINGS 9250 3.3 2.6 127 6.2 3.9 159
WILLOW CREEK PASS 9540 .6 1.6 37 3.1 2.5 124
----- -----
Basin wide percent of average 125 146
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.7 2.8 168 5.6 3.1 181
CASPER MTN. 7900 3.2 2.3 139 3.9 3.1 126
DEADMAN HILL 10220 1.2 2.8 43 4.7 3.0 157
DEER PARK 9700 4.6 3.0 153 5.8 3.3 176
LAPRELE CREEK 8375 1.6 1.4 114 3.6 2.4 150
RENO HILL 8400 3.6 2.2 164 4.9 3.1 158
ROACH 9700 3.5 1.7 206 5.1 2.8 182
SAND LAKE 10050 7.5 4.3 174 7.8 3.8 205
SOUTH PASS 9040 3.9 2.1 186 4.9 2.8 175
WINDY PEAK 7900 1.5 .9 167 3.8 2.1 181
----- -----
Basin wide percent of average 150 170
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .8 0 2.0 2.3 87
DIVIDE PEAK 8880 2.4 2.3 104 5.3 3.3 161
OLD BATTLE 10000 7.3 4.0 182 7.7 4.5 171
SANDSTONE RS 8150 -M .8 * 2.4 2.9 83
WHISKEY PARK 8950 2.3 2.4 96 5.8 3.7 157
----- -----
Basin wide percent of average 126 139
UPPER GREEN RIVER
BIG SANDY OPENING 9080 3.1 1.7 182 3.3 2.3 143
BLIND BULL SUM 8650 2.7 2.4 113 2.4 2.8 86
EAST RIM DIVIDE 7930 .2 1.0 20 2.0 1.7 118
ELKHART PARK G.S. 9400 2.4 1.2 200 2.9 2.4 121
GROS VENTRE SUMMIT 8750 2.2 1.8 122 2.4 2.3 104
GUNSIGHT PASS 9820 1.9 -M * 3.1 -M *
KENDALL R.S. 7740 .3 1.0 30 2.1 2.0 105
LOOMIS PARK 8240 .5 1.4 36 2.5 2.3 109
NEW FORK LAKE 8340 .4 .9 44 2.3 2.0 115
SNIDER BASIN 8060 1.1 1.1 100 2.8 2.1 133
SPRING CREEK DIVIDE 9000 3.4 2.2 155 4.1 3.3 124
TRIPLE PEAK 8500 3.0 1.9 158 4.6 2.9 159
----- -----
Basin wide percent of average 116 120
LOWER GREEN RIVER
HAMS FORK 7840 .2 .7 29 3.1 1.8 172
HEWINTA 9519 -M 1.1 * 2.4 2.9 83
HICKERSON PARK 9145 1.6 .6 267 3.3 2.0 165
HOLE-IN-ROCK 9150 1.1 .7 157 3.7 2.0 185
INDIAN CREEK 9425 4.5 2.3 196 5.0 3.3 152
KELLEY R.S. 8180 1.3 1.4 93 3.6 2.7 133
STEEL CREEK PARK 10200 1.6 2.0 80 3.0 2.9 103
----- -----
Basin wide percent of average 134 137
UPPER BEAR RIVER
BUG LAKE 7950 .6 1.7 35 3.4 2.9 117
HAYDEN FORK 9212 .1 1.2 8 2.9 3.0 97
KELLEY R.S. 8180 1.3 1.4 93 3.6 2.7 133
LILY LAKE 9156 .8 1.3 62 2.3 3.0 77
MONTE CRISTO 8960 2.1 2.1 100 3.9 3.5 111
SALT RIVER SUMMIT 7760 .0 .6 0 2.5 2.4 104
TRIAL LAKE 9992 2.5 2.5 100 3.0 3.4 88
----- -----
Basin wide percent of average 69 103
-----------------------------------------------------------------------------
-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 1961-90.
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.