To amend the John D. Dingell, Jr., Conservation, Management, and Recreation Act to extend the management plan submission deadline for certain National Heritage Areas to 4 years, and for other purposes.

This bill extends by one year the deadline for completion of proposed management plans for the Appalachian Forest National Heritage Area in West Virginia and Maryland, the Maritime Washington National Heritage Area in Washington, the Mountains to Sound Greenway National Heritage Area in Washington, the Sacramento-San Joaquin Delta National Heritage Area in California, the Santa Cruz Valley National Heritage Area in Arizona, and the Susquehanna National Heritage Area in Pennsylvania.