---
kind: "unit"
title: "25"
title_heading: "Indians"
key: "chI/subchH/part171"
level: "part"
label: "Part 171"
heading: "Irrigation Operation and Maintenance"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/25/chI-subchH-part171"
sections_count: 49
---

# Part 171 — Irrigation Operation and Maintenance

Title 25 C.F.R. — Indians › Chapter I — Bureau of Indian Affairs, Department of the Interior › Subchapter H — Land and Water

## Contents

- [Subpart A — General Provisions](/cfr/25/chI-subchH-part171-subpartA.md)
- [Subpart B — Irrigation Service](/cfr/25/chI-subchH-part171-subpartB.md)
- [Subpart C — Water Use](/cfr/25/chI-subchH-part171-subpartC.md)
- [Subpart D — Irrigation Facilities](/cfr/25/chI-subchH-part171-subpartD.md)
- [Subpart E — Financial Matters: Assessments, Billing, and Collections](/cfr/25/chI-subchH-part171-subpartE.md)
- [Subpart F — Records, Agreements, and Other Matters](/cfr/25/chI-subchH-part171-subpartF.md)
- [Subpart G — Non-Assessment Status](/cfr/25/chI-subchH-part171-subpartG.md)