---
kind: "unit"
title: "43"
title_heading: "Public Lands"
key: "ch12/schVII"
level: "subchapter"
label: "Subchapter VII"
heading: "Exchange and Amendment of Farm Units"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/43/ch12-schVII"
sections_count: 12
---

# Subchapter VII — Exchange and Amendment of Farm Units

Title 43 — Public Lands › Chapter 12 — Reclamation and Irrigation of Lands by Federal Government

## Sections

- [§451. Conditions necessary for exchange; terms; credits; rights nonassignable](/usc/43/451.md)
- [§451a. Persons eligible for benefits](/usc/43/451a.md)
- [§451b. Irrigation construction charges](/usc/43/451b.md)
- [§451c. Cancellation of charges or liens; credits](/usc/43/451c.md)
- [§451d. Disposal of improvements; water rights; revertibil­ity of relinquished land](/usc/43/451d.md)
- [§451e. Amendment of farm unit; application; amount of land; exchange; waiver](/usc/43/451e.md)
- [§451f. Exchanges subject to mortgage contracts](/usc/43/451f.md)
- [§451g. Preferences; veterans; timely applicants](/usc/43/451g.md)
- [§451h. Establishment of farm units; size; contiguous or noncontiguous](/usc/43/451h.md)
- [§451i. “Federal irrigation project” defined](/usc/43/451i.md)
- [§451j. Rules and regulations](/usc/43/451j.md)
- [§451k. Availability of appropriations; expenses as nonreimbursable](/usc/43/451k.md)