extends S 20 mi. from mouth of Naknek River, on N coast of Alaska Peninsula, Bristol Bay Low.; 1.7 miles wide.
Descriptive name given by U.S. Geological Survey (USGS) in 1963, because of "the extensive tide flats off the east shore of Kvichak Bay."
Big Flat, Deadman Sands,
Halfmoon Bay, Kvichak Bay,
Cape Suworof,
Johnson Hill,
Johnson Hill Creek,