; and (B) by striking to implement in the matter preceding paragraph (1) and all that follows through the period at the end of paragraph (2) and inserting to implement eligible projects described in subsection (b). ; (2) by redesignating subsection (d) as subsection (e); (3) by striking subsection (c) and inserting the following: (c) Required projects (1) In general If sufficient applications exist, of the funds made available to carry out this section, the Administrator shall use 50 percent to carry out— (A) 10 eligible projects described in subsection (b) that are within the Upper Missouri River Basin; (B) 10 eligible projects described in subsection (b) that are within the Upper Rio Grande Basin; and (C) 10 eligible projects described in subsection (b) that are within the Columbia River Basin. (2) Requirement In carrying out paragraph (1)(A), the Administrator shall select not fewer than 2 eligible projects for a reservation that serves more than 1 federally recognized Indian Tribe. (d) Federal share The Federal share of the cost of a project carried out under this section shall be 100 percent. ; and (4) in subsection (e) (as so redesignated)— (A) by striking There is and inserting There are ; (B) by striking subsection (a) $20,000,000 and inserting the following: subsection (a)— (1) $20,000,000 ; (C) in paragraph (1) (as so designated), by striking 2022. and inserting 2020; and