U.S. Code / Title 33 — Navigation and Navigable…Title 33ChapterChapter 12—River and Harbor Improvements GenerallyContentsSubchapter I—General ProvisionsSubchapter Ii—Pay and Allowances; Traveling Expenses and SubsistenceSubchapter Iii—Acquisition of Land and MaterialsSubchapter Iv—Particular Work or ImprovementsSubchapter V—Prosecution of Work Generally