--- kind: "unit" title: "33" title_heading: "Navigation and Navigable Waters" key: "ch9/schI" level: "subchapter" label: "Subchapter I" heading: "In General" release: "119-102" date: "2026-07-12" url: "https://uscodex.org/usc/33/ch9-schI" sections_count: 62 --- # Subchapter I — In General Title 33 — Navigation and Navigable Waters › Chapter 9 — Protection of Navigable Waters and of Harbor and River Improvements Generally ## Sections - [§400. Continuing authority programs](/usc/33/400.md) - [§401. Construction of bridges, causeways, dams or dikes generally; exemptions](/usc/33/401.md) - [§402. Construction of bridges, etc., over Illinois and Mississippi Canal](/usc/33/402.md) - [§403. Obstruction of navigable waters generally; wharves; piers, etc.; excavations and filling in](/usc/33/403.md) - [§403a. Creation or continuance of obstruction of navigable waters](/usc/33/403a.md) - [§403b. Lighting at docks and boat launching facilities](/usc/33/403b.md) - [§404. Establishment of harbor lines; conditions to grants for extension of piers, etc.](/usc/33/404.md) - [§405. Establishment and modification of harbor lines on Potomac and Anacostia Rivers](/usc/33/405.md) - [§406. Penalty for wrongful construction of bridges, piers, etc.; removal of structures](/usc/33/406.md) - [§407. Deposit of refuse in navigable waters generally](/usc/33/407.md) - [§407a. Deposit of debris of mines and stamp works](/usc/33/407a.md) - [§408. Taking possession of, use of, or injury to harbor or river improvements](/usc/33/408.md) - [§408a. Expediting approval of modifications and alterations of projects by non-Federal interests](/usc/33/408a.md) - [§409. Obstruction of navigable waters by vessels; floating timber; marking and removal of sunken vessels](/usc/33/409.md) - [§410. Exception as to floating loose timber, sack rafts, etc.; violation of regulations; penalty](/usc/33/410.md) - [§411. Penalty for wrongful deposit of refuse; use of or injury to harbor improvements, and obstruction of navigable waters generally](/usc/33/411.md) - [§412. Liability of masters, pilots, etc., and of vessels engaged in violations](/usc/33/412.md) - [§413. Duty of United States attorneys and other Federal officers in enforcement of provisions; arrest of offenders](/usc/33/413.md) - [§414. Vessel removal by Corps of Engineers](/usc/33/414.md) - [§415. Summary removal of water craft obstructing navigation; liability of owner, lessee, or operator](/usc/33/415.md) - [§416. Appropriations for removal of sunken water craft](/usc/33/416.md) - [§417. Expenses of investigations by Department of the Army](/usc/33/417.md) - [§418. Provisions for protection of New York Harbor unaffected](/usc/33/418.md) - [§419. Regulation by Secretary governing transportation and dumping of dredgings, refuse, etc., into navigable waters; oyster lands; appropriations](/usc/33/419.md) - [§419a. Management practices to extend capacity and useful life of dredged material disposal areas](/usc/33/419a.md) - [§420. Piers and cribs on Mississippi and St. Croix Rivers](/usc/33/420.md) - [§421. Deposit of refuse, etc., in Lake Michigan near Chicago](/usc/33/421.md) - [§422. Modification and extension of harbor lines at Chicago](/usc/33/422.md) - [§423. Establishment of pierhead and bulkhead lines in Wilmington Harbor, California](/usc/33/423.md) - [§424. Establishment of pierhead or bulkhead lines in Newport Harbor, California](/usc/33/424.md) - [§424a. Modification of harbor lines in Newport Harbor, California](/usc/33/424a.md) - [§425. Omitted](/usc/33/425.md) - [§426. Investigations concerning erosion of shores of coastal and lake waters](/usc/33/426.md) - [§426–1. Coastal Engineering Research Center; establishment; powers and functions](/usc/33/426-1.md) - [§426–2. Board on Coastal Engineering Research](/usc/33/426-2.md) - [§426–3. Transfer of functions of Beach Erosion Board](/usc/33/426-3.md) - [§426a. Additional investigations concerning erosion of shores of coastal and lake waters; payment of costs; “shores” defined](/usc/33/426a.md) - [§426b. Applicability of existing laws; projects referred to Board of Engineers for Rivers and Harbors](/usc/33/426b.md) - [§426c. Report by Coastal Engineering Research Center](/usc/33/426c.md) - [§426d. Payment of expenses](/usc/33/426d.md) - [§426e. Federal aid in protection of shores](/usc/33/426e.md) - [§426e–1. Shore protection projects](/usc/33/426e-1.md) - [§426e–2. Clarification of munition disposal authorities](/usc/33/426e-2.md) - [§426e–3. Coastal storm damage reduction contracts](/usc/33/426e-3.md) - [§426f. Reimbursements](/usc/33/426f.md) - [§426g. Storm and hurricane restoration and impact minimization program](/usc/33/426g.md) - [§426g–1. State and regional plans](/usc/33/426g-1.md) - [§426h. Repealed.](/usc/33/426h.md) - [§426h–1. Definitions](/usc/33/426h-1.md) - [§426i. Shore damage prevention or mitigation](/usc/33/426i.md) - [§426i–1. Repealed.](/usc/33/426i-1.md) - [§426i–2. National coastal data bank](/usc/33/426i-2.md) - [§426j. Repealed.](/usc/33/426j.md) - [§426k. Five year demonstration program to temporarily increase diversion of water from Lake Michigan at Chicago, Illinois](/usc/33/426k.md) - [§426l. Protection of Lake Ontario](/usc/33/426l.md) - [§426m. Collection and removal of drift and debris from publicly maintained commercial boat harbors and adjacent land and water areas](/usc/33/426m.md) - [§426n. Technical assistance to States and local governments; cost sharing](/usc/33/426n.md) - [§426o. Great Lakes material disposal](/usc/33/426o.md) - [§426o–1. Great Lakes dredging levels adjustment](/usc/33/426o-1.md) - [§426o–2. Great Lakes navigation and protection](/usc/33/426o-2.md) - [§426p. Corps of Engineers](/usc/33/426p.md) - [§427...430. Repealed.](/usc/33/427...430.md)