Title 33 — Navigation and Navigable Waters
Chapter 9 — Protection of Navigable Waters and of Harbor and River Improvements Generally
§ 467d. National inventory of dams and low-head dams
Statutory text
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.
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.
Low-head dams
The inventory maintained under subsection (a) shall include—
the location, ownership, description, current use, condition, height, and length of each low-head dam;
any information on public safety conditions at each low-head dam; and
any other relevant information concerning low-head dams.
Data
In carrying out this section, the Secretary shall—
coordinate with Federal and State agencies, Tribal governments, and other relevant entities; and
use data provided to the Secretary by those agencies and entities.
Public availability
The Secretary shall make the inventory maintained under subsection (a) publicly available (including on a publicly available website), including—
public safety information on the dangers of low-head dams; and
a directory of financial and technical assistance resources available to reduce safety hazards and fish passage barriers at low-head dams.
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.
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.
Legislative history
Reconstructed from this section’s Code source credit and amendment notes, resolved against the local Statutes at Large. Editorial notes are evidence, not the law that made the change.
Pub. L. 92–367 § 6 · 86 Stat. 506
Enacted · 33 U.S.C. § 467d
Pub. L. 92–367, § 6, as added Pub. L. 104–303, title II, § 215(c)(8), Oct. 12, 1996, 110 Stat. 3687
Source evidence
Code source credit
Pub. L. 92–367, § 6, as added Pub. L. 104–303, title II, § 215(c)(8), Oct. 12, 1996, 110 Stat. 3687Enacted provision · exact public law section
Sec. 6. Nothing contained in this Act and no action or failure to Liability. act under this Act shall be construed (1) to create any liability in the United States or its officers or employees for the recovery of damages caused by such action or failure to act; or (2) to relieve an owner or operator of a dam of the legal duties, obligations, or liabilities incident to the ownership or operation of the dam.Dam Safety Act of 2006
Pub. L. 109–460 § 1(b) · 120 Stat. 3401
Amended · 33 U.S.C. § 467d
Pub. L. 109–460 amended section generally. Prior to amendment, section read as follows: “The Secretary of the Army, acting through the Chief of Engineers, may maintain and periodically publish updated information on the inventory of dams in the United States.”
Source evidence
Code amendment note
Pub. L. 109–460 amended section generally. Prior to amendment, section read as follows: “The Secretary of the Army, acting through the Chief of Engineers, may maintain and periodically publish updated information on the inventory of dams in the United States.”Enacted provision · exact public law section
(b) National Dam Inventory.— Section 6 of the National Dam Safety Program Act (33 U.S.C. 467d) is amended to read as follows: “SEC. 6. NATIONAL DAM INVENTORY. “The Secretary of the Army shall maintain and update information on the inventory of dams in the United States. Such inventory of dams shall include any available information assessing each dam based on inspections completed by either a Federal agency or a State dam safety agency.” .Pub. L. 118–272 div. A title I § 1132(b) · 138 Stat. 3021
Amended · 33 U.S.C. § 467d
Pub. L. 118–272 amended section generally. Prior to amendment, text of section read as follows: “The Secretary of the Army shall maintain and update information on the inventory of dams in the United States. Such inventory of dams shall include any available information assessing each dam based on inspections completed by either a Federal agency or a State dam safety agency.”
Unresolved: Pub. L. 118–272 was not found in the local Statutes at Large index.
Source evidence
Code amendment note
Pub. L. 118–272 amended section generally. Prior to amendment, text of section read as follows: “The Secretary of the Army shall maintain and update information on the inventory of dams in the United States. Such inventory of dams shall include any available information assessing each dam based on inspections completed by either a Federal agency or a State dam safety agency.”
2 of 3 references resolved to an enrolled provision · 1 unresolved
Editorial Notes
Prior Provisions
A prior section 467d, Pub. L. 92–367, § 5, , 86 Stat. 507, directed Secretary report to Congress on or before , on activities under this subchapter, including in report an inventory of dams in the United States, a review of each inspection made, recommendations to State Governors and implementation of those recommendations, recommendations for comprehensive national program for inspection and safety regulation, and recommendations on responsibilities which should be assumed by Federal, State, and local governments and by public and private interests, prior to repeal by Pub. L. 104–303, title II, § 215(c)(2), , 110 Stat. 3685.
A prior section 6 of Pub. L. 92–367 was classified to section 467e of this title prior to repeal by Pub. L. 104–303.
Amendments2006–2025 · 2 rounds
2025
Pub. L. 118–272 amended section generally. Prior to amendment, text of section read as follows: “The Secretary of the Army shall maintain and update information on the inventory of dams in the United States. Such inventory of dams shall include any available information assessing each dam based on inspections completed by either a Federal agency or a State dam safety agency.”
2006
Pub. L. 109–460 amended section generally. Prior to amendment, section read as follows: “The Secretary of the Army, acting through the Chief of Engineers, may maintain and periodically publish updated information on the inventory of dams in the United States.”
Credits
1996–2025 · 3 acts
- 1996Pub. L. 92–367, § 6, as added Pub. L. 104–303, title II, § 215(c)(8), , 110 Stat. 3687
- 2006amended Pub. L. 109–460, § 1(b), , 120 Stat. 3401
- 2025Pub. L. 118–272, div. A, title I, § 1132(b), , 138 Stat. 3021.
Show as published
(Pub. L. 92–367, § 6, as added Pub. L. 104–303, title II, § 215(c)(8), , 110 Stat. 3687; amended Pub. L. 109–460, § 1(b), , 120 Stat. 3401; Pub. L. 118–272, div. A, title I, § 1132(b), , 138 Stat. 3021.)