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: OCTOBER 18 , 2007
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 .1 .2 50* 1.9 1.2 158
COTTONWOOD CREEK 7600 1.0 .3 333* 3.0 1.7 176
GRANITE CREEK 6770 .1 .2 50* 1.4 1.0 140
GRASSY LAKE 7265 .5 .5 100* 2.2 1.9 116
GROS VENTRE SUMMIT 8750 .9 .7 129* 2.0 1.0 200
LEWIS LAKE DIVIDE 7850 .0 .3 0* 1.3 1.8 72
PHILLIPS BENCH 8200 .3 .4 75* 1.8 1.4 129
SALT RIVER SUMMIT 7600 .2 .1 200* 1.6 1.1 145
SNAKE RIVER STATION 6920 .1 .1 100* 1.9 1.3 146
SPRING CREEK DIVIDE 9000 .5 .5 100* 1.5 1.5 100
THUMB DIVIDE 7980 .0 .2 0* 2.0 1.2 167
TOGWOTEE PASS 9580 2.1 1.3 162* 3.0 1.6 188
TWO OCEAN PLATEAU 9240 2.3 1.6 144* 3.1 1.8 172
WILLOW CREEK 8450 1.0 .7 143* 3.2 2.1 152
----- -----
Basin wide percent of average 128* 145
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 2.3 1.5 153* 2.1 1.2 175
BLACK BEAR 8170 1.7 1.2 142* 3.1 2.0 155
CANYON 8090 .1 .3 33* 2.1 1.0 210
FISHER CREEK 9100 3.2 1.3 246* 3.4 1.9 179
MADISON PLATEAU 7750 .0 .6 0* 2.3 1.4 164
NORTHEAST ENTRANCE 7350 -M .1 * -M .9 *
PARKER PEAK 9400 2.2 1.4 157* 3.1 1.3 238
SYLVAN LAKE 8420 .6 1.1 55* 2.9 1.5 193
THUMB DIVIDE 7980 .0 .2 0* 2.0 1.2 167
TWO OCEAN PLATEAU 9240 2.3 1.6 144* 3.1 1.8 172
WHISKEY CREEK 6800 .0 .2 0* 2.2 1.3 169
WHITE MILL 8700 2.3 .9 256* 2.6 1.5 173
WOLVERINE 7650 .0 .2 0* 1.4 1.0 140
----- -----
Basin wide percent of average 140* 177
WIND RIVER
BURROUGHS CREEK 8750 .0 .4 0* 1.8 .9 200
COLD SPRINGS 9630 .0 .4 0* 1.7 1.1 155
DEER PARK 9700 .9 1.1 82* 2.4 1.4 171
HOBBS PARK 10100 .7 1.0 70* 2.4 1.2 200
LITTLE WARM 9370 .3 .5 60* 1.8 1.0 180
SOUTH PASS 9040 .1 .6 17* 1.8 1.2 150
ST. LAWRENCE ALT 8620 .0 .2 0* 1.1 1.0 110
TOGWOTEE PASS 9580 2.1 1.3 162* 3.0 1.6 188
TOWNSEND CREEK 8700 .0 .4 0* 2.1 1.2 175
----- -----
Basin wide percent of average 69* 171
BIGHORN BASIN
BALD MTN. 9380 2.4 1.7 141* 2.9 1.4 207
BEAR TRAP MEADOW 8200 .1 .3 33* 1.0 1.0 100
BLACKWATER 9780 2.1 1.8 117* 2.4 1.5 160
BONE SPRINGS DIV 9350 .8 1.5 53* 2.7 1.4 193
EVENING STAR 9200 2.1 1.5 140* 3.0 1.6 188
GRAVE SPRINGS 8550 .4 .4 100* 1.6 1.2 133
KIRWIN 9550 2.0 1.0 200* 2.9 1.0 290
MARQUETTE 8760 .1 1.1 9* 1.7 1.3 131
MIDDLE POWDER 7760 1.3 .7 186* 1.5 1.5 100
OWL CREEK 8975 .2 .4 50* 1.8 .7 257
POWDER RIVER PASS 9480 .3 .6 50* 2.0 1.1 182
SHELL CREEK 9580 2.4 1.8 133 3.1 1.2 258
SYLVAN LAKE 8420 .6 1.1 55* 2.9 1.5 193
SYLVAN ROAD 7120 .1 .2 50* 2.4 1.2 200
TIMBER CREEK 7950 .0 .3 0* 2.2 .9 244
YOUNTS PEAK 8350 1.2 .7 171* 2.2 1.0 220
----- -----
Basin wide percent of average 107* 186
SHOSHONE RIVER
BLACKWATER 9780 2.1 1.8 117* 2.4 1.5 160
EVENING STAR 9200 2.1 1.5 140* 3.0 1.6 188
KIRWIN 9550 2.0 1.0 200* 2.9 1.0 290
MARQUETTE 8760 .1 1.1 9* 1.7 1.3 131
SYLVAN LAKE 8420 .6 1.1 55* 2.9 1.5 193
SYLVAN ROAD 7120 .1 .2 50* 2.4 1.2 200
YOUNTS PEAK 8350 1.2 .7 171* 2.2 1.0 220
----- -----
Basin wide percent of average 111* 192
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .1 .3 33* 1.0 1.0 100
BIG GOOSE 7990 .6 .4 150* 2.3 1.2 192
BONE SPRINGS DIV 9350 .8 1.5 53* 2.7 1.4 193
BURGESS JUNCTION 7880 .8 .8 100* 2.0 1.3 154
CLOUD PEAK RESERVOIR 9860 1.4 .6 233* 3.0 1.5 200
DOME LAKE 8880 .8 .9 89* 2.6 1.4 186
GRAVE SPRINGS 8550 .4 .4 100* 1.6 1.2 133
HANSEN SAWMILL 8360 .0 .3 0* 1.7 1.0 170
MIDDLE POWDER 7760 1.3 .7 186* 1.5 1.5 100
POWDER RIVER PASS 9480 .3 .6 50* 2.0 1.1 182
SUCKER CREEK 8880 .8 .7 114* 1.9 1.4 136
TIE CREEK 6870 .3 .2 150* 1.9 1.4 136
----- -----
Basin wide percent of average 103* 157
BELLE FOURCHE
BLIND PARK 6890 .0 .1 0* .8 1.5 53
COLE CANYON 5910 .0 .2 0* .8 -M *
NORTH RAPID CREEK 6130 .0 .2 0* .7 1.4 50
----- -----
Basin wide percent of average 0* 52
UPPER N. PLATTE RIVER
COLUMBINE 9160 .6 .2 300* 2.7 1.4 193
DIVIDE PEAK 8860 .2 .9 22* -M 1.5 *
ELK RIVER 8700 .0 .2 0* 1.9 1.3 146
JOE WRIGHT 10120 1.5 1.1 136* 3.6 1.9 189
NORTH FRENCH CREEK 10130 .5 1.7 29* 2.0 1.9 105
OLD BATTLE 9920 1.2 1.5 80* 2.6 2.0 130
SAGE CREEK BASIN 7850 .0 .4 0* 1.4 .9 156
SOUTH BRUSH CREEK 8440 .1 .3 33* 1.4 1.5 93
TOWER 10500 1.8 1.5 120* 3.4 2.2 155
WEBBER SPRINGS 9250 .4 .8 50* 2.2 1.8 122
WILLOW CREEK PASS 9540 1.2 .5 240* 1.9 1.2 158
----- -----
Basin wide percent of average 82* 143
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 .1 1.1 9* 1.4 1.4 100
CASPER MTN. 7850 .2 .8 25* 1.6 1.4 114
DEADMAN HILL 10220 1.5 1.1 136* 2.1 1.4 150
DEER PARK 9700 .9 1.1 82* 2.4 1.4 171
LAPRELE CREEK 8375 .0 .4 0* .9 1.1 82
RENO HILL 8500 .1 .9 11* 1.3 1.4 93
ROACH 9700 1.0 .5 200* 2.1 1.3 162
SAND LAKE 10050 1.7 1.7 100* 2.4 1.8 133
SOUTH PASS 9040 .1 .6 17* 1.8 1.2 150
WINDY PEAK 7900 .2 .2 100* .7 1.0 70
----- -----
Basin wide percent of average 69* 125
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .1 0* 1.1 1.1 100
DIVIDE PEAK 8860 .2 .9 22* -M 1.5 *
OLD BATTLE 9920 1.2 1.5 80* 2.6 2.0 130
SANDSTONE RS 8150 .0 .2 0* 1.1 1.3 85
WHISKEY PARK 8950 .5 .7 71* 2.4 1.6 150
----- -----
Basin wide percent of average 56* 120
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .3 .6 50* 1.5 1.0 150
BLIND BULL SUM 8900 .4 .6 67* 1.2 1.3 92
EAST RIM DIVIDE 7930 .0 .1 0* 1.2 .8 150
ELKHART PARK G.S. 9400 .1 .3 33* 1.2 1.1 109
GROS VENTRE SUMMIT 8750 .9 .7 129* 2.0 1.0 200
KENDALL R.S. 7740 .2 .1 200* 1.3 .9 144
LOOMIS PARK 8240 .0 .3 0* 1.3 1.0 130
NEW FORK LAKE 8340 .2 .1 200* 1.4 .9 156
SNIDER BASIN 8060 .1 .2 50* .8 .9 89
SPRING CREEK DIVIDE 9000 .5 .5 100* 1.5 1.5 100
TRIPLE PEAK 8500 .6 .4 150* 1.6 1.3 123
----- -----
Basin wide percent of average 85* 128
LOWER GREEN RIVER
HAMS FORK 7840 .0 .1 0* 1.0 .8 125
HEWINTA 9500 .0 .5 0* 3.7 1.4 264
HICKERSON PARK 9100 -M .1 * -M 1.0 *
HOLE-IN-ROCK 9150 .0 .1 0* 2.9 .9 322
INDIAN CREEK 9425 .5 .6 83* 1.6 1.5 107
KELLEY R.S. 8180 .5 .3 167* 2.1 1.2 175
STEEL CREEK PARK 10100 3.0 1.0 300* 3.8 1.3 292
----- -----
Basin wide percent of average 154* 213
UPPER BEAR RIVER
BUG LAKE 7950 .3 .6 50* .6 1.3 46
HAYDEN FORK 9100 .8 .5 160* 2.5 1.4 179
KELLEY R.S. 8180 .5 .3 167* 2.1 1.2 175
LILY LAKE 9050 .3 .5 60* 2.7 1.4 193
MONTE CRISTO 8960 .7 .9 78* 2.5 1.6 156
SALT RIVER SUMMIT 7600 .2 .1 200* 1.6 1.1 145
TRIAL LAKE 9960 .9 1.0 90* 1.7 1.6 106
----- -----
Basin wide percent of average 95* 143
-----------------------------------------------------------------------------
-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.