The Illinois Department of Public Health regularly tests the water to determine when beaches are safe to reopen.

An Illinois father and his autistic son drowned in Lake Michigan over the Fourth of July holiday weekend when a carefree game ...

Only 40 miles separate voracious Asian carp from the world's largest freshwater ecosystem. To stop them, Illinois must reckon with its legacy of coal ash pollution.

3 injured in rollover crash in Lake Forest Three people were injured in a single-vehicle rollover crash on Route 41 in the northern suburb of Lake Forest, Illinois, early Tuesday morning.

Mapping of the reefs in the Illinois waters of Lake Michigan by the Illinois Natural History Survey is advancing quickly with modern technology.

So today, I’m issuing a proclamation declaring that hereinafter, Lake Michigan shall be known as Lake Illinois. The proclamation has been forwarded to Google to ensure the world’s maps reflect ...

Illinois Gov. JB Pritzker has halted a key project meant to defend the Great Lakes from invasive carp, citing federal funding uncertainty.

Millions of people visited state parks across Illinois last year. Which were the most visited though? Here's the top 10.

A possible WWII-era rocket was found on West 3rd Street in unincorporated Antioch; some were evacuated, the Lake County Sheriff's Office says.