Highlands Stewardship Act - Directs the Secretaries of Agriculture and the Interior to establish the Highlands Stewardship Area in the Highlands region (an area encompassing nearly 2,000,000 acres extending from eastern Pennsylvania through New Jersey and New York to northwestern Connecticut (the Highlands States)).
Directs the Secretary of Agriculture to establish: (1) within the Department of Agriculture the Office of Highlands Stewardship to advise the Secretaries and the Governors of the Highlands States on priorities for projects carried out with financial or technical assistance under this Act, land conservation partnership projects, Highlands region research, policy and education initiatives necessary to implement the findings of the Highlands Regional Study (conducted by the Forest Service in 1990) and the New York-New Jersey Highlands Regional Assessment Update (conducted by the Service in 2001), and to implement the strategies of the study, the update, and other studies in consultation with the Highlands States; and (2) the Highlands Stewardship Area Work Group to assist with such implementation. Authorizes the Office to provide financial and technical assistance to an eligible entity to carry out a project to protect, restore, preserve, promote, or interpret natural, agricultural, historical, cultural, or recreational resources of the Area.
Directs the Secretary of the Interior, from among proposed land conservation partnership projects submitted by the Governors of the Highlands States, to annually designate those projects that are eligible to receive financial assistance under this Act.