United States Code

USC most recently checked for updates: May 13, 2025

§ 467d.
National inventory of dams and low-head dams
(a)
In general

The Secretary of the Army shall maintain and update information on the inventory of dams and low-head dams in the United States.

(b)
Dams

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.

(c)
Low-head dams
The inventory maintained under subsection (a) shall include—
(1)
the location, ownership, description, current use, condition, height, and length of each low-head dam;
(2)
any information on public safety conditions at each low-head dam; and
(3)
any other relevant information concerning low-head dams.
(d)
Data
In carrying out this section, the Secretary shall—
(1)
coordinate with Federal and State agencies, Tribal governments, and other relevant entities; and
(2)
use data provided to the Secretary by those agencies and entities.
(e)
Public availability
The Secretary shall make the inventory maintained under subsection (a) publicly available (including on a publicly available website), including—
(1)
public safety information on the dangers of low-head dams; and
(2)
a directory of financial and technical assistance resources available to reduce safety hazards and fish passage barriers at low-head dams.
(f)
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.

(g)
Low-head dam defined

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.

(Pub. L. 92–367, § 6, as added Pub. L. 104–303, title II, § 215(c)(8), Oct. 12, 1996, 110 Stat. 3687; amended Pub. L. 109–460, § 1(b), Dec. 22, 2006, 120 Stat. 3401; Pub. L. 118–272, div. A, title I, § 1132(b), Jan. 4, 2025, 138 Stat. 3021.)
cite as: 33 USC 467d