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: NOVEMBER 12 , 2009
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 1.0 1.5 67 3.0 3.2 94
COTTONWOOD CREEK 7670 .6 1.9 32 4.4 4.6 96
GRAND TARGHEE 9260 6.9 -M * 6.1 -M *
GRANITE CREEK 6770 .1 1.2 8 2.6 2.8 93
GRASSY LAKE 7265 2.1 3.1 68 4.8 5.2 92
GROS VENTRE SUMMIT 8750 2.3 2.1 110 2.5 2.6 96
GUNSIGHT PASS 9820 2.0 -M * 3.3 -M *
LEWIS LAKE DIVIDE 7850 -M 3.0 * -M 5.0 *
PHILLIPS BENCH 8200 1.5 2.8 54 3.6 3.8 95
SALT RIVER SUMMIT 7760 .1 .9 11 2.6 2.9 90
SNAKE RIVER STATION 6920 1.0 1.4 71 4.3 3.4 126
SPRING CREEK DIVIDE 9000 3.4 2.9 117 4.2 4.0 105
THUMB DIVIDE 7980 1.9 1.7 112 4.9 3.1 158
TOGWOTEE PASS 9580 4.6 4.0 115 4.7 4.2 112
TWO OCEAN PLATEAU 9240 6.4 4.7 136 5.0 4.6 109
WILLOW CREEK 8380 2.0 3.5 57 5.6 5.4 104
----- -----
Basin wide percent of average 85 105
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 4.6 4.1 112 3.9 3.2 122
BLACK BEAR 8170 5.1 4.6 111 6.3 5.6 112
CANYON 7870 1.9 1.3 146 3.4 2.8 121
FISHER CREEK 9100 6.4 4.6 139 6.8 5.2 131
MADISON PLATEAU 7750 2.6 2.8 93 5.5 3.8 145
NORTHEAST ENTRANCE 7350 .6 .9 67 3.2 2.3 139
PARKER PEAK 9400 5.4 3.9 138 4.2 3.2 131
SYLVAN LAKE 8420 2.5 3.3 76 4.2 3.9 108
THUMB DIVIDE 7980 1.9 1.7 112 4.9 3.1 158
TWO OCEAN PLATEAU 9240 6.4 4.7 136 5.0 4.6 109
WHISKEY CREEK 6800 .4 1.5 27 3.2 3.3 97
WHITE MILL 8700 5.0 3.3 152 4.9 4.1 120
WOLVERINE 7650 .8 1.1 73 2.5 2.6 96
----- -----
Basin wide percent of average 115 122
WIND RIVER
BURROUGHS CREEK 8750 3.1 1.8 172 2.9 2.6 112
COLD SPRINGS 9630 2.6 1.8 144 3.1 2.8 111
DEER PARK 9700 4.6 3.6 128 5.9 4.1 144
HOBBS PARK 10100 5.3 3.1 171 5.2 3.1 168
LITTLE WARM 9370 2.1 1.8 117 2.5 2.7 93
SOUTH PASS 9040 4.1 2.7 152 5.0 3.4 147
ST. LAWRENCE ALT 8620 2.1 1.5 140 3.9 2.4 162
TOGWOTEE PASS 9580 4.6 4.0 115 4.7 4.2 112
TOWNSEND CREEK 8700 3.3 1.7 194 4.9 3.0 163
----- -----
Basin wide percent of average 145 135
BIGHORN BASIN
BALD MTN. 9380 4.1 3.9 105 3.6 3.4 106
BEAR TRAP MEADOW 8200 1.3 1.0 130 2.2 2.4 92
BLACKWATER 9780 5.9 4.4 134 5.1 4.0 127
BONE SPRINGS DIV 9350 3.4 3.7 92 3.4 3.4 100
EVENING STAR 9200 5.6 4.5 124 6.7 4.4 152
GRAVE SPRINGS 8550 2.5 1.8 139 3.6 2.6 138
KIRWIN 9550 3.3 2.7 122 2.8 2.7 104
MARQUETTE 8760 2.9 2.5 116 4.4 3.0 147
MIDDLE POWDER 7760 2.5 2.1 119 3.2 3.5 91
OWL CREEK 8975 2.5 1.3 192 2.1 1.6 131
POWDER RIVER PASS 9480 2.1 2.1 100 2.6 2.7 96
SHELL CREEK 9580 3.8 3.6 106 3.2 2.9 110
SYLVAN LAKE 8420 2.5 3.3 76 4.2 3.9 108
SYLVAN ROAD 7120 .9 1.3 69 3.5 3.4 103
TIMBER CREEK 7950 1.1 1.6 69 2.5 2.2 114
YOUNTS PEAK 8350 3.1 2.4 129 2.6 2.9 90
----- -----
Basin wide percent of average 113 114
SHOSHONE RIVER
BLACKWATER 9780 5.9 4.4 134 5.1 4.0 127
EVENING STAR 9200 5.6 4.5 124 6.7 4.4 152
KIRWIN 9550 3.3 2.7 122 2.8 2.7 104
MARQUETTE 8760 2.9 2.5 116 4.4 3.0 147
SYLVAN LAKE 8420 2.5 3.3 76 4.2 3.9 108
SYLVAN ROAD 7120 .9 1.3 69 3.5 3.4 103
YOUNTS PEAK 8350 3.1 2.4 129 2.6 2.9 90
----- -----
Basin wide percent of average 115 121
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.3 1.0 130 2.2 2.4 92
BIG GOOSE 7990 1.8 1.3 138 3.4 2.5 136
BONE SPRINGS DIV 9350 3.4 3.7 92 3.4 3.4 100
BURGESS JUNCTION 7880 3.1 2.4 129 4.1 3.0 137
CLOUD PEAK RESERVOIR 9860 3.6 2.4 150 3.9 3.5 111
DOME LAKE 8880 2.4 2.9 83 3.6 3.4 106
GRAVE SPRINGS 8550 2.5 1.8 139 3.6 2.6 138
HANSEN SAWMILL 8360 1.3 1.3 100 2.3 2.4 96
MIDDLE POWDER 7760 2.5 2.1 119 3.2 3.5 91
POWDER RIVER PASS 9480 2.1 2.1 100 2.6 2.7 96
SUCKER CREEK 8880 3.7 2.1 176 4.5 3.2 141
TIE CREEK 6870 .3 1.2 25 4.0 3.0 133
----- -----
Basin wide percent of average 115 115
BELLE FOURCHE
BLIND PARK 6890 1.3 1.4 93 4.1 3.3 124
COLE CANYON 5910 .0 1.4 0 4.1 2.3 178
NORTH RAPID CREEK 6130 1.0 .9 111 4.2 3.0 140
----- -----
Basin wide percent of average 62 144
UPPER N. PLATTE RIVER
COLUMBINE 9160 .9 2.1 43 4.3 3.6 119
DIVIDE PEAK 8880 2.6 2.8 93 5.4 3.8 142
ELK RIVER 8700 .3 1.3 23 3.3 3.1 106
JOE WRIGHT 10120 3.8 4.0 95 4.9 4.9 100
NORTH FRENCH CREEK 10130 7.1 4.7 151 7.4 4.8 154
OLD BATTLE 10000 7.4 4.9 151 7.9 5.3 149
SAGE CREEK BASIN 7850 1.3 1.6 81 2.8 2.2 127
SOUTH BRUSH CREEK 8440 .9 1.4 64 4.4 3.6 122
TOWER 10500 7.2 6.4 112 7.6 6.0 127
WEBBER SPRINGS 9250 3.3 3.4 97 6.3 4.6 137
WILLOW CREEK PASS 9540 1.5 2.0 75 3.1 2.8 111
----- -----
Basin wide percent of average 105 128
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.8 3.3 145 5.7 3.7 154
CASPER MTN. 7900 3.2 2.7 119 4.0 3.6 111
DEADMAN HILL 10220 1.1 3.2 34 4.7 3.4 138
DEER PARK 9700 4.6 3.6 128 5.9 4.1 144
LAPRELE CREEK 8375 1.5 1.7 88 3.6 2.8 129
RENO HILL 8400 3.6 2.6 138 5.0 3.5 143
ROACH 9700 3.4 2.2 155 5.1 3.3 155
SAND LAKE 10050 7.6 5.2 146 8.1 4.4 184
SOUTH PASS 9040 4.1 2.7 152 5.0 3.4 147
WINDY PEAK 7900 1.4 1.1 127 3.9 2.4 162
----- -----
Basin wide percent of average 125 147
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .2 1.0 20 2.2 2.7 81
DIVIDE PEAK 8880 2.6 2.8 93 5.4 3.8 142
OLD BATTLE 10000 7.4 4.9 151 7.9 5.3 149
SANDSTONE RS 8150 -M 1.0 * 2.5 3.4 74
WHISKEY PARK 8950 2.3 3.1 74 5.9 4.4 134
----- -----
Basin wide percent of average 106 122
UPPER GREEN RIVER
BIG SANDY OPENING 9080 3.2 2.1 152 3.4 2.6 131
BLIND BULL SUM 8650 2.8 3.2 87 2.5 3.4 74
EAST RIM DIVIDE 7930 .2 1.3 15 2.0 2.1 95
ELKHART PARK G.S. 9400 2.5 1.6 156 2.9 2.8 104
GROS VENTRE SUMMIT 8750 2.3 2.1 110 2.5 2.6 96
GUNSIGHT PASS 9820 2.0 -M * 3.3 -M *
KENDALL R.S. 7740 .4 1.4 29 2.2 2.4 92
LOOMIS PARK 8240 .5 1.9 26 2.5 2.8 89
NEW FORK LAKE 8340 .4 1.2 33 2.4 2.3 104
SNIDER BASIN 8060 1.2 1.5 80 2.9 2.5 116
SPRING CREEK DIVIDE 9000 3.4 2.9 117 4.2 4.0 105
TRIPLE PEAK 8500 3.3 2.6 127 4.7 3.5 134
----- -----
Basin wide percent of average 93 104
LOWER GREEN RIVER
HAMS FORK 7840 .3 .9 33 3.2 2.1 152
HEWINTA 9519 .8 1.3 62 2.8 3.3 85
HICKERSON PARK 9145 1.6 .8 200 3.5 2.3 152
HOLE-IN-ROCK 9150 1.1 .8 138 3.7 2.2 168
INDIAN CREEK 9425 4.5 3.0 150 5.2 3.9 133
KELLEY R.S. 8180 1.5 1.9 79 3.9 3.3 118
STEEL CREEK PARK 10200 1.7 2.4 71 3.0 3.3 91
----- -----
Basin wide percent of average 104 124
UPPER BEAR RIVER
BUG LAKE 7950 -M 2.1 * -M 3.4 *
HAYDEN FORK 9212 .2 1.5 13 2.9 3.6 81
KELLEY R.S. 8180 1.5 1.9 79 3.9 3.3 118
LILY LAKE 9156 -M 1.6 * -M 3.5 *
MONTE CRISTO 8960 2.2 2.6 85 4.3 4.1 105
SALT RIVER SUMMIT 7760 .1 .9 11 2.6 2.9 90
TRIAL LAKE 9992 -M 3.1 * -M 4.0 *
----- -----
Basin wide percent of average 58 99
-----------------------------------------------------------------------------
-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.
