Foster Avenue, in the North Park neighborhood. Experts say a single mug of salt is enough for 10 squares of sidewalk. (Patty Wetli / WTTW News)

Road salt runoff is making its way into Great Lakes waterways. Wisconsin has pending legislation that could encourage contractors to use less.

“The Great Lake Jumper” Dan O’Conor takes a plunge into the frigid waters of Lake Michigan, as he does every morning, Thursday, Jan. 26, 2023, in Chicago. O’Conor has jumped every day since June 2020. (AP Photo / Erin Hooley)

You might call Dan O’Conor an amateur authority on cold water immersion. Since June 2020, the 55-year-old Chicago man has plunged into Lake Michigan almost daily, including on frigid winter mornings when he has to shovel through the ice.

WTTW News explains the science behind lake effect snow. (Hint: We’re lucky to be on this side of Lake Michigan.)

The Michigan City Generating Station has been burning coal for electricity for nearly a century. (WTTW News)
,

Northern Indiana Public Service Company is retiring the 130-acre Michigan City Generating Station, which has been burning coal for electricity for nearly a century. The company is also cleaning up decades of coal ash byproduct. But advocates say plans to leave some coal ash on the site puts groundwater and Lake Michigan in danger of contamination. 

Police and fire department vessels on the water. (Chicago Fire Department Media / Twitter)

After a week that saw multiple people dead from drownings in Lake Michigan off Chicago’s shoreline, Mayor Lori Lightfoot had words of caution for the city’s residents and visitors.

(WTTW News)

Chicago police and fire departments conducted multiple water rescues in a less than 24-hour period on Lake Michigan, with at least two people dead.

(WTTW News)

The man was pulled from the water early Wednesday morning. More than 30 people have drowned in Lake Michigan so far in 2022.

(WTTW News)
,

In 2016, Navy Pier officials asked City Council to approve an update to the pier’s planned development, authorizing, among other things, the construction of a transient marina on its north side, where boats could dock for the day. The project is now the subject of a lawsuit. 

A silver carp captured in June 2017 below the T.J. O’Brien Lock and Dam is pictured. (Courtesy Illinois Department of Natural Resources)

Officials say the invasive carp’s presence does not necessarily mean there is a reproducing population of the species in the area, which is located above electric dispersal barriers. The fish captured Thursday was more than 38 inches long and weighed about 22 pounds. 

(WTTW News)

The girl drowned Tuesday in the lake waters off Gary, Ind. On Sunday, a 72-year-old man was pulled from the water off Indiana Dunes State Park. 

(WTTW News)

A Florida man drowned Monday in Lake Michigan after pulling a teenage female to safety from the water off Porter Beach at Indiana Dunes National Park, officials said.

(Courtesy of City of Chicago)

Friends of the Parks is re-starting the conversation surrounding the gaps in Chicago’s lakefront park system and what those four miles could mean for shoreline protection, promoting biodiversity and delivering green space to areas where it’s in short supply.

(WTTW News)
,

The Lake Michigan Rescue Equipment Act, signed into law by Gov. J.B. Pritzker on Thursday, means lifesaving equipment like life rings are mandated at all access points to the lake, as well as warning signs in more dangerous areas. 

(WTTW News)

Chicago’s beaches are seeing fluctuating lake levels and worsening erosion. This, as Lake Michigan levels drop, following two years of record highs.

(WTTW News)

Legislation signed Thursday by Gov. J.B. Pritzker now mandates the placement of rescue equipment along Lake Michigan access points, including piers.

(WTTW News)

Memorial Day weekend traditionally marks the start of Chicago’s summer beach and boating season. Here’s what to know before you hit the sand and water.