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Location.--Latitude 46°16'35", Longitude
122°09'41", in NE 1/4 NE 1/4 Section 10, Township 9
North, Range 5 East, in Skamania County, Hydrologic Unit
17080005, Mount St. Helens National Volcanic Monument, at
entrance of Spirit Lake Outlet Tunnel, 5.6 miles north-northeast
of Mount St. Helens volcanic edifice, and at river
mile undetermined. Drainage
area is 18.0 mi2, at entrance to Spirit Lake
Outlet Tunnel. Prior to the volcanic eruption on May 18, 1980,
14.9 mi2. Datum
of gage is 3,400 feet above NGVD of 1929, 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, information,
and
history.
Funding for this site is provided by the cooperators /
programs below:
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Station Notes
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Lake elevation
varies from minimum recorded elevation of 3,437.00 feet on
October 28, 1997 to maximum recorded elevation of 3,460.13
feet on February 5, 1997. |
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An additional sensor
has been installed and reflects the lake elevation at the
intake gate. |
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This station managed by the Vancouver Office.
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U.S. Department of the Interior |
U.S. Geological Survey
