; and (ii) provides a written basis for the determination under clause (i) to the non-Federal interest. . 1049. Implementation guidance for post-flood improvements The Secretary shall expedite completion of implementation guidance for the amendments made by section 1176 of the Water Infrastructure Improvements for the Nation Act (130 Stat. 1673). 1050. Willamette Valley Project water reallocation (a) In general The Secretary shall assist the State of Oregon in the implementation of the reallocation of water within the Willamette Basin, including the development of instream flow targets and facilitation of the conversion of Willamette Valley Project stored water to instream water rights to ensure fish and wildlife benefits, as required by the biological opinion for the Willamette Basin Review issued by the National Marine Fisheries Service on June 28, 2019. (b) Authorization of appropriations There is authorized to be appropriated to carry out this section $2,000,000, to remain available until expended. 1051. Central Appalachia water (a) In general The Secretary shall establish a program for providing environmental assistance to non-Federal interests in Central and North Central Appalachia (as defined by the Appalachian Regional Commission). (b) Form of assistance Assistance under this section may be in the form of design and construction assistance for water-related environmental infrastructure and resource protection and development projects in Central and North Central Appalachia (as defined by the Appalachian Regional Commission), including projects for wastewater treatment and related facilities, water supply and related facilities, and surface water resource protection and development. (c) Public ownership The Secretary may provide assistance for a project under this section only if the project is publicly owned. (d) Local cooperation agreements (1) In general Before providing assistance under this section, the Secretary shall enter into a local cooperation agreement with the non-Federal interest to provide