16 U.S.C. § 410kkk–1 — Lewis and Clark National Historical Park

(a) Designation — This section creates the Lewis and Clark National Historical Park^* as a unit of the National Park System. It exists to preserve the historic, cultural, scenic, and natural resources connected to the Lewis and Clark Expedition's arrival in the lower Columbia River area. It also commemorates the end of the expedition and its winter encampment in 1805-1806, after the group successfully crossed North America.

(b) Boundaries — The park's boundaries generally follow the map called "Lewis and Clark National Historical Park, Boundary Map," numbered 405/80027, dated December 2003. The park includes three groups of land: (1) land in Clatsop County, Oregon, tied to the winter encampment — known as Fort Clatsop and designated the Fort Clatsop National Memorial by Public Law 85-435 — including the site of a salt cairn (a specific lot in Seaside, Oregon) and nearby parts of the old trail leading from the fort to the coast; (2) land marked "Fort Clatsop 2002 Addition Lands" on the map; and (3) land along the lower Columbia River in Washington tied to the expedition's 1805 arrival at the Pacific Ocean, marked on the map as "Station Camp," "Clark's Dismal Nitch," and "Cape Disappointment."

(c) Acquisition of land
(1) Authorization — The Secretary^* can acquire land, interests in land, and improvements within the park's boundaries. The methods allowed are donation, purchase with donated or government money, exchange, transfer from another federal agency, or any other method the Secretary decides serves the public interest.
(2) Consent of landowner required — For most of this land, the Secretary needs the owner's consent before acquiring it. The one exception is corporately owned timberland within the "Fort Clatsop 2002 Addition Lands" area — that land does not require the owner's consent.
(3) Acquisition of Fort Clatsop 2002 Addition Lands — If the owner of that corporately owned timberland agrees to sell as a result of an actual condemnation proceeding, or instead of one, the Secretary must sign a memorandum of understanding with the owner. That agreement covers how the land will be managed once the United States acquires it.

(d) Cape Disappointment
(1) Transfer — Subject to any valid existing rights (including land withdrawals), the Secretary must transfer management of any federal land at Cape Disappointment, Washington, within the park's boundary, over to the Director of the National Park Service.
(2)(A) Notice — If a federal agency controls "withdrawn" land at Cape Disappointment within the park boundary, and that agency decides it no longer needs the land, the agency's head must tell the Secretary in writing. (B) Transfer — Once the Secretary gets that notice, the land transfers to the Secretary's control and becomes part of the park.
(3) Memorial to Thomas Jefferson — A 20-acre parcel on the map, marked "Memorial to Thomas Jefferson," is freed from all its prior land withdrawals. The Secretary must build a memorial to Thomas Jefferson on that parcel.
(4) Management of Cape Disappointment State Park land — The Secretary may make an agreement with the State of Washington, letting the State keep managing the part of the park known as "Cape Disappointment State Park."

(e) Map availability — The map described in subsection (b) is kept on file at National Park Service offices for the public to view.