The Nawiliwili Small Boat Harbor is located on the southeastern coast of Kauai. The project was authorized under Section 107 of the River and Harbor Act 1960. The project was completed in 1974 at a cost of $1,171,414 (Federal: $562,800; non-Federal: $608,614).

The Federal navigation features consist of an entrance channel (1,035 feet long, 120 feet wide and 12 feet deep); access channel (690 feet long, 80 feet wide, and 8-10 feet deep); a revetted dike (1,458 feet long); a stub breakwater (142 feet long); and a breakwater (453 feet long). The local sponsor is the State of Hawaii, Department of Land and Natural Resources.