(a) Definitions

In this section:

(1) Inventory

The term “inventory” means the national low-head dam inventory developed under subsection (b)(1)(A).

(2) Low-head dam

The term “low-head dam” means a river-wide artificial barrier that generally spans a stream channel, blocking the waterway and creating a backup of water behind the barrier, with a drop off over the wall of not less than 6 inches and not more than 25 feet.

(b) National low-head dam inventory

(1) In general

Not later than 18 months after December 23, 2022, the Secretary of the Army, in consultation with the heads of appropriate Federal and State agencies, shall—

(A) develop an inventory of low-head dams in the United States that includes—

(i) the location, ownership, description, current use, condition, height, and length of each low-head dam;

(ii) any information on public safety conditions at each low-head dam;

(iii) public safety information on the dangers of low-head dams;

(iv) a directory of financial and technical assistance resources available to reduce safety hazards and fish passage barriers at low-head dams; and

(v) any other relevant information concerning low-head dams; and

(B) submit the inventory to the Committee on Environment and Public Works of the Senate and the Committee on Transportation and Infrastructure of the House of Representatives.

(2) Data

In carrying out this subsection, the Secretary shall—

(A) coordinate with Federal and State agencies and other relevant entities; and

(B) use data provided to the Secretary by those agencies and entities.

(3) Public availability

The Secretary shall make the inventory publicly available, including on a publicly available website.

(4) Updates

The Secretary, in consultation with the heads of appropriate Federal and State agencies, shall maintain and periodically publish updates to the inventory.

(c) Authorization of appropriations

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There is authorized to be appropriated to the Secretary to carry out this section $30,000,000.

(d) Clarification

Nothing in this section provides authority to the Secretary to carry out an activity, with respect to a low-head dam, that is not explicitly authorized under this section.