To clarify that, with respect to each Missouri River mainstem reservoir of the Corps of Engineers located in a State, the State maintains authority to allocate and appropriate the quantity of water in the reservoir that is attributable to the natural flows of the Missouri River within the boundaries of the State, and for other purposes.

To clarify that, with respect to each Missouri River mainstem reservoir of the Corps of Engineers located in a State, the State maintains authority to allocate and appropriate the quantity of water in the reservoir that is attributable to the natural flows of the Missouri River within the boundaries of the State, and for other purposes. 1. State authority to allocate and appropriate waters in Missouri River mainstem reservoirs (a) Declaration of policy It is declared to be the policy of Congress that— (1) a State has authority to manage the waters of rivers located within the boundaries of the State; and (2) accordingly, with respect to each Missouri River mainstem reservoir of the Corps of Engineers, the State in which the reservoir is located maintains authority to allocate and appropriate the quantity of water in the reservoir that is attributable to the natural flows of the Missouri River within the boundaries of the State. (b) Natural flows For purposes of this section— (1) the term natural flows (2) the quantity of natural flows shall be determined based on average monthly flows (excluding depletions) and shall be calculated for the entire period of record, including the periods before, during, and after construction of any dams or reservoirs. (c) Missouri river system reservoirs (1) Policies and procedures All policies and procedures for the operations of Missouri River mainstem reservoirs of the Corps of Engineers shall be consistent with the declared policy under subsection (a). (2) Determination of natural flows With respect to each Missouri River mainstem reservoir of the Corps of Engineers, the Secretary shall determine, in consultation with the State in which the reservoir is located, the quantity of water in the reservoir that is attributable to the natural flows of the Missouri River within the boundaries of the State. (3) Judicial review A State may seek judicial review of a determination under paragraph (2) under chapter 7 of title 5, United States Code. (4) Prohibition on fees (A) In general The Secretary may not charge a fee in connection with water attributable to the natural flows of the Missouri River. (B) Interim rule Until the quantity of the natural flows of the Missouri River within the boundaries of a State is determined under subsection (c)(2) through final agency action, the Secretary may not charge any fee in connection with water of the Missouri River in the State, without the consent of the State. (5) Report to Congress Not later than 180 days after the date of enactment of this Act, the Secretary shall submit to Congress a report on determinations made under paragraph (2).

Summary: Declares it to be congressional policy that: (1) a state has authority to manage the waters of rivers located within its boundaries; and (2) a state in which a Missouri River mainstem reservoir of the Corps of Engineers is located maintains authority to allocate the quantity of water in the reservoir attributable to the natural flows of the Missouri River within its boundaries. Requires all policies and procedures for the operations of Missouri River mainstem reservoirs of the Corps to be consistent with such policy. Defines "natural flows" to mean Missouri River waters that would be flowing in a state in the absence of a dam that forms a Missouri River mainstem reservoir of the Corps. Requires the quantity of natural flows to be determined based on average monthly flows (excluding depletions) and to be calculated for the entire period of record, including before, during, and after construction of any dams or reservoirs. Requires the Secretary of the Army to determine the quantity of water in each Missouri River mainstem reservoir of the Corps that is attributable to the natural flows of the Missouri River within the state in which the reservoir is located. Authorizes a state to seek judicial review of such determination. Prohibits the Secretary from charging a fee in connection with water of the Missouri River in a state, without the state's consent, until such quantity of the natural flows of the Missouri River within the state is determined.