Indiana Harbor was constructed over several years, beginning in 1901, and this included a breakwater paralleling the east edge of the channel where it enters the lake.

During 1901 and 1902, Indiana Harbor was dredged and a breakwater built.

In 1914, the federal government assumed responsibility for Indiana Harbor and the canal.

Only sludge worms inhabit the Indiana Harbor and Ship Canal, indicating that severe pollution exists.

The mud at the bottom of the Indiana Harbor and Canal is more than 10 feet thick in places.

Of those, the Indiana Harbor and Canal is among six of the worst singled out for special studies by the Environmental Protection Agency.

US 12 turns more southerly as it passes west and south of Indiana Harbor, an industrial complex of mills, refineries, and docks.

The Indiana Harbor and Ship Canal complex.

That same year, the original line between East Chicago and Indiana Harbor was abandoned.

Marktown, Clayton Mark's planned worker community, is located at Indiana Harbor.