; and (iii) to maintain and monitor riparian areas in which activities are carried out under clauses (i) and (ii). (C) Report to Congress Not later than 18 months after the date of enactment of this subsection, the Secretary shall submit to the Committee on Environment and Public Works of the Senate and the Committee on Transportation and Infrastructure of the House of Representatives a report describing the implementation of the pilot program. (D) Termination of authority The authority provided under this paragraph shall terminate on September 30, 2024. (4) Cost-share The Federal share of an action carried out under a partnership under paragraph (2) or the pilot program under paragraph (3) shall not exceed 80 percent of the total cost of the action. . 1605. Terrestrial noxious weed control pilot program (a) In general The Secretary shall carry out a pilot program, in consultation with the Federal Interagency Committee for the Management of Noxious and Exotic Weeds, to identify and develop new and improved strategies for terrestrial noxious weed control on Federal land under the jurisdiction of the Secretary. (b) Partnerships In carrying out the pilot program under subsection (a), the Secretary shall act in partnership with such other individuals and entities as the Secretary determines to be appropriate. (c) Cooperative agreements The Secretary may utilize cooperative agreements with county and State agencies for the implementation of the pilot program under subsection (a). (d) Report to congress Not later than 2 years after the date of enactment of this Act, the Secretary shall provide to the Committee on Environment and Public Works of the Senate and the Committee on Transportation and Infrastructure of the House of Representatives a report describing the new and improved strategies developed through the pilot program under subsection (a). 1606. Invasive species risk assessment, prioritization, and management Section 528(f)(2) of the Water Resources Development Act of 1996 (110 Stat. 3771) is amended— (1) by