USGS 14240446 CASTLE LAKE NEAR MOUNT ST. HELENS, WA
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
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.
this station on a
map of the basin (PDF).
Additional Data and Information.--
Funding for this site is provided by the
cooperators / programs below:
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.
This station managed by the Cascades Volcano Observatory (Vancouver).
Summary of all available data for this site
Instantaneous-data availability statement
Most recent instantaneous value: 2578.14 06-04-2023 10:45 PDT