; 33 U.S.C. 709 ), in the Upper Missouri River Basin, in accordance with section 602 of the Water Resources Development Act of 1986 (100 Stat. 4148; 121 Stat. 1076) as if those reservoirs were listed in subsection (a) of that section. . 1503. Planning Assistance for States The Secretary shall ensure that the planning assistance for States program under section 22 of the Water Resources Development Act of 1974 ( 42 U.S.C. 1962d–16 ) provides equal priority for all authorized purposes, including water supply and water conservation. 1504. Forecast-informed reservoir operations (a) Working group (1) In general Not later than 180 days after the date of enactment of this Act, the Secretary, in conjunction with the Commissioner of Reclamation, shall establish a working group to advance the science to support forecast-informed reservoir operations in the Upper Missouri River Basin. (2) Members The working group established under paragraph (1) shall be composed of— (A) the Secretary; (B) the Commissioner of Reclamation; (C) the Director of the United States Geological Survey; (D) the Administrator of the National Oceanic and Atmospheric Administration; and (E) representatives of affected State and local agencies. (3) Duties The working group established under paragraph (1) shall develop recommendations to implement the use of forecast-informed reservoir operations in the Upper Missouri River Basin and submit to Congress a report on the findings and recommendations of the working group. (b) Viability assessments (1) In general On request of a non-Federal interest, the Secretary, the Commissioner of Reclamation, and the non-Federal interest shall jointly conduct a viability assessment on the use of forecast-informed reservoir operations at a reservoir— (A) that is located within the Upper Missouri River Basin; and (B) for which the Secretary has flood control responsibilities under section 7 of the Act of December 22, 1944 (commonly known as the Flood Control Act of 1944 ) (58 Stat. 890, chapter 665