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USGS 14240311 SPIRIT LAKE TUNNEL OUTLET NR SPIRIT LAKE, WA
Location.--Latitude 46°16'56", Longitude
122°11'43", in NW 1/4 NW 1/4 Section 9, Township 9 North,
Range 5 East, in Skamania County, Hydrologic Unit 17080005,
Mount St. Helens National Volcanic Monument, at exit 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.