A $7.25 million ecosystem restoration project for Wolf Lake was carried out by the Chicago District of the U.S. Army Corps of Engineers, with the support of the Illinois Department of Natural Resources and the City of Hammond. Completed in September 2007, the project sought to improve the overall quality of the lake ecosystem for native species. Natural water levels in the lake were restored by clearing channels and creating openings in dikes and causeways. Additional habitat was created by constructing approximately of new aquatic and wetland habitat plantings. Also, approximately of shoreline was restored, deep holes were created to locally diversify the lake bottom, and herbicidal and biological controls were implemented to control aquatic and shoreline exotic and undesirable plant species.USACE Chicago District
