; and (C) all credits except for the share reserved under subparagraph (B) to be available upon completion of the construction of the mitigation bank. 111. Indian Tribes (a) Cost sharing provisions for the territories and Indian Tribes Section 1156(a)(2) of the Water Resources Development Act of 1986 ( 33 U.S.C. 2310(a)(2) ) is amended by striking section 102 of the Federally Recognized Indian Tribe List Act of 1994 ( 25 U.S.C. 5130 ) and inserting section 4(e) of the Indian Self-Determination and Education Assistance Act ( 25 U.S.C. 5304(e) ) . (b) Written agreement requirement for water resources projects Section 221(b)(1) of the Flood Control Act of 1970 (42 U.S.C. 1962d–5b(b)(1)) is amended by striking federally recognized Indian tribe and, as defined in section 3 of the Alaska Native Claims Settlement Act ( 43 U.S.C. 1602 ), a Native village, Regional Corporation, and Village Corporation and inserting Indian tribe, as defined in section 4(e) of the Indian Self-Determination and Education Assistance Act ( 25 U.S.C. 5304(e) ) . 112. Columbia River (a) Bonneville Dam, Oregon Section 1178(c)(1)(A) of the Water Resources Development Act of 2016 (130 Stat. 1675) is amended by striking may provide assistance and inserting may provide assistance, which may include housing and related improvements, . (b) John Day Dam, Washington and Oregon (1) In general The Secretary shall, not later than 180 days after the date of enactment of this Act, and in consultation with the Secretary of the Interior, conduct a study to determine the extent to which Indian Tribes have been displaced as a result of the construction of the John Day Dam, Columbia River, Washington and Oregon, as authorized by section 204 of the Flood Control Act of 1950 (64 Stat. 179), including an assessment of effects related to housing and related improvements. (2) Additional actions If the Secretary determines, based on the study under paragraph (1), that assistance is required, the Secretary may use all existing authorities of the Secretary to provide