In Chilkoot Inlet, along the SE end of Chilkat Peninsula, in Tongass NF, 4 mi. S of Battery Point and 22 mi. S of Skagway, Coast Mts. 1 mile long.
Local name reported by U.S. Geological Survey (USGS) in 1952. It was published in 1923 as "Flat Bay" on International Boundary Commission (IBC) Sheet 9 (1951 atlas). According to E. C. Robertson the name "Mud Bay" is how commonly used.
Carrs Cove, Chilkat Inlet, Chilkoot Inlet, Kalhagu Cove, Kelgaya Bay, Letnikof Cove, Lutak Inlet, Mud Bay, Paradise Cove, Portage Cove, Pyramid Harbor, Shiyi Bay, Taiya Inlet, Taiyasanka Harbor, Tanani Bay,
Anchorage Point, Battery Point, Chilkat Peninsula, False Battery Point, Glacier Point, Green Point, Halutu Peninsula, Kaskulu Point, Kelgaya Point, Lehunua Point, Low Point, Nukdik Point, Seduction Point, Taiya Point, Tanani Point,