The Great Lakes, which straddle the U.S.-Canada border, are subject to multiple layers of regulation. Water use, shipping and other issues are handled by various local, state and federal bodies, as well as the International Joint Commission.
As America confronts the opioid crisis, environmental scientists are warning about a related problem. Chemicals from pain-killers and other drugs often end up in lakes and rivers, creating what some scientists say could be a deadly cocktail for fish and other wildlife.
The problem of sewer overflows affects the entire Great Lakes region. More than 182 municipalities have systems that can release untreated sewage during big storms, the Environmental Protection Agency says.
With the winds whipping around and waves crashing on the break wall, Douglas Dobson walks around his home. His neighborhood sits on a narrow strip of land, with Lake Ontario to the north and several ponds to the south.