Tap any paragraph to write a margin note. Your notes collect in the Desk below the text and file under cases with @. The side-by-side margin rail opens on a larger screen.

Code · U.S. Code · Title 33 - NAVIGATION AND NAVIGABLE WATERS · CHAPTER 9— PROTECTION OF NAVIGABLE WATERS AND OF HARBOR AND RIVER IMPROVEMENTS GENERALLY · SUBCHAPTER VII— DAM INSPECTION PROGRAM · § 467d

§ 467d. National inventory of dams and low-head dams

557 words·~3 min read·/usc/title-33/section-467d

A research copy — for the controlling text, always check the official state or federal source. Not legal advice.

(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.)
Connections25 cite this · traces to 2
Cited by 25 sections · top 23
13 references not yet in our index
  • Pub. L. 92–367, § 6
  • Pub. L. 104–303, title II, § 215(c)(8)
  • 110 Stat. 3687
  • Pub. L. 109–460, § 1(b)
  • 120 Stat. 3401
  • 138 Stat. 3021
  • Pub. L. 92–367, § 5
  • 86 Stat. 507
  • Pub. L. 104–303, title II, § 215(c)(2)
  • 110 Stat. 3685
  • section 6 of Pub. L. 92–367
  • Pub. L. 104–303
  • Pub. L. 109–460
Citation graph
cites case law
§ 467d
National inventory of dams and low-head dams
Bills×14
U.S.C.×5
Stat.×3
Stat. Comp.×2
Pub. L.×1
Pub. L.Pub. L. 92–367, § 6
Pub. L.Pub. L. 104–303, title II, § 215(c)(8)
Stat.110 Stat. 3687
Pub. L.Pub. L. 109–460, § 1(b)
Stat.120 Stat. 3401
Cites 15 · showing 7Cited by 25 across 5 sources
★   the supreme law of the land   ★
Don't Tread on Me
E Pluribus Unum — out of many, one

"If you don't know your rights, you don't have any."

Marginalia · a citizen's law index
A research desk, not legal advice. Always read the cited source before relying on a summary.
Questions or an issue? support@self-law.org
disclaimerMarginalia is a research index, not a law firm. Nothing on this site is legal, tax, or financial advice and no attorney–client relationship is formed by using it. Statutes, regulations, and case law change; summaries, search results, AI output, and member posts may be incomplete, out of date, or wrong. Any interpretation drawn from material on this site should be validated by a licensed attorney in your jurisdiction before you act on it.