On Saturday, April 27, from 10 a.m. to noon, Dick Lanyon and John Quail will discuss the North Branch Dam located at the confluence of the North Branch and the North Shore Channel near Foster and Kedzie Avenues in Chicago.

The event is part of the Watershed Learning on the Great Lakes series at the Arrington Lakefront Lagoon Shelter. Each workshop includes a short talk, discussion/ hands-on activity and tea. No registration is necessary; just drop by. Come prepared to walk outside. Accessible. For more information, email Clare at clare@lakedance.org.