; (B) not less than 12 percent of such funds for projects that are located within the Great Lakes Navigation System; (C) 10 percent of such funds for expanded uses carried out at donor ports, as such term is defined in section 2106 of the Water Resources Reform and Development Act of 2014 ( 33 U.S.C. 2238c ); and (D) any remaining funds for operation and maintenance costs of any harbor or inland harbor referred to in subsection (a)(2) based on an equitable allocation of such funds among such harbors and inland harbors. ; (2) by amending paragraph (3) to read as follows: (3) Additional uses at emerging harbors (A) In general In each fiscal year, the Secretary may use not more than $5,000,000 of funds designated for emerging harbor projects under paragraph (1)(A) to pay for the costs of up to 10 projects for maintenance dredging of a marina or berthing area, in an emerging harbor, that includes an area that is located adjacent to, or is accessible by, a Federal navigation project, subject to subparagraphs (B) and (C) of this paragraph. (B) Eligible emerging harbors The Secretary may use funds as authorized under subparagraph (A) at an emerging harbor that— (i) supports commercial activities, including commercial fishing operations, commercial fish processing operations, recreational and sport fishing, and commercial boat yards; or (ii) supports activities of the Secretary of the department in which the Coast Guard is operating. (C) Cost-sharing requirements The Secretary shall require a non-Federal interest to contribute not less than 25 percent of the costs for maintenance dredging of that portion of a maintenance dredging project described in subparagraph (A) that is located outside of the Federal navigation project, which may be provided as an in-kind contribution, including through the use of dredge equipment owned by non-Federal interest to carry out such activities.