Location.--Latitude 46°15'31", Longitude
122°16'27", in SE 1/4 SW 1/4 Section 14, Township 9 North,
Range 4 East, in Skamania County, Hydrologic Unit 17080005,
Mount St. Helens National Volcanic Monument, on right bank at outflow
of Castle Lake, 5.0 miles north by northwest of the northwest edifice
of Mount St. Helens, at Toutle Glacier, and at river mile
undetermined. Drainage
area is 3.1 mi2, revised. Datum of
gage is 2,498.95 feet above NGVD of 1929. To convert to North American
Vertical Datum of 1988, add 1.84 ft (USGS Level 1 GNSS survey as per
USGS T&M 11-D1). Data published to NGVD of 1929.
Maps.--Locate
this station on a
map of the basin (PDF).
Additional Data and Information.--Station data
inventory, annual data report,
and
history.
Funding for this site is provided by the
cooperators / programs below:
Station Notes
Lake elevation varies from
minimum elevation 2,578.31 feet on September 5-7, 2003, to maximum
elevation, 2,582.76 feet on February 8, 1996.