USACE Chicago District releases Draft Supplemental Environmental Assessment for Port Washington Harbor North Breakwater Repair

USACE Chicago District
Published Sept. 11, 2023

The U.S. Army Corps of Engineers, Chicago District (USACE) has conducted an environmental analysis in accordance with the National Environmental Policy Act of 1969, as amended. The Supplemental Environmental Assessment (SEA) dated 07 September 2023 for the Port Washington Harbor North Breakwater Operations and Maintenance Project addresses the need to support the navigability of Port Washington Harbor, Ozaukee County, Wisconsin. 

The SEA evaluated two alternatives that include the No Action plan and USACE’s Preferred Alternative, setting new armor stone as well as resetting dislodged armor stones along the north breakwater. 

The draft SEA is available at: USACE is seeking public input and is accepting comments through October 9, 2023. Comments or questions can be sent to Shawna Herleth-King, LRD Regional Technical Specialist, by email at

Release no. 23-007