Susquehanna National Heritage Area will offer boat tours on the Chief Uncas with on-the-water lectures on various topics. Cruises will leave at 7 p.m. from the Zimmerman Center for Heritage, 1706 Long Level Road, Wrightsville.

The tours that include lectures will be Thursday, June 5, "Fishing Weirs" with Melanie Mahew; Thursday, June 12, "Birding on the Susquehanna" with Sara Gotwols; Thursday, July 3, "The Susquehanna and the American Revolution" with Jim McClure; Thursday, Aug. 7, "The Underground Railroad" with Nelson Polite; and Thursday, Aug. 14, "Pennsylvania's Environmental History" with Dr. Allen Dietrich-Ward.

There is a fee. For more information and to book tickets, visit https://susqnha.org/events/.