The Secretary of the Army shall maintain and update information on the inventory of dams and low-head dams in the United States.
The inventory maintained under subsection (a) shall include any available information assessing each dam based on inspections completed by a Federal agency, a State dam safety agency, or a Tribal government.
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.
In this section, 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.