To amend the Omnibus Parks and Public Lands Management Act of 1996 to extend the authorization for certain national heritage areas, and for other purposes.

Amends the Omnibus Parks and Public Lands Management Act of 1996 to: (1) extend to September 30, 2027, the authorization for making grants or providing assistance with respect to the National Coal Heritage Area, Tennessee Civil War Heritage Area, Augusta Canal National Heritage Area, Steel Industry Heritage Project (the Steel Industry American Heritage Area), Essex National Heritage Area, South Carolina National Heritage Corridor, America's Agricultural Heritage Partnership, Ohio & Erie Canal National Heritage Corridor (redesignated by this Act as the Ohio & Erie National Heritage Canalway), and Hudson River Valley National Heritage Area; and (2) increase the total amount that may be appropriated for such areas (with the exception of the Hudson River Valley National Heritage Area); and (3) increase the amount authorized to be appropriated for such Area.

Requires all vacancies in the Ohio & Erie Canal National Heritage Corridor Committee to be filled by the Ohio & Erie Canal Association.

Adds Lincoln County, West Virginia, and Paint Creek and Cabin Creek in Kanawha County, West Virginia to the National Coal Heritage Area. Provides for the Secretary to enter into a contractual agreement with the National Coal Heritage Area Authority pursuant to which the Secretary shall assist the Authority in certain activities. Makes resources within Lincoln County and Paint Creek and Cabin Creek also eligible for assistance. Provides for the Authority to submit a Coal Heritage Management Plan.

Adds Berkeley County, South Carolina, to the South Carolina National Heritage Corridor.