43 CFR § 5040.4 - What is the effect of designating sustained-yield units?

---
identifier: "/us/cfr/t43/s5040.4"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "43 CFR § 5040.4 - What is the effect of designating sustained-yield units?"
title_number: 43
title_name: "Public Lands: Interior"
section_number: "5040.4"
section_name: "What is the effect of designating sustained-yield units?"
chapter_name: "BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR"
subchapter_number: "E"
subchapter_name: "FOREST MANAGEMENT (5000)"
part_number: "5040"
part_name: "SUSTAINED-YIELD FOREST UNITS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "43 U.S.C. 1181e; 43 U.S.C. 1740."
regulatory_source: "63 FR 13132, Mar. 18, 1998, unless otherwise noted."
cfr_part: "5040"
---


# 5040.4 What is the effect of designating sustained-yield units?

Designating new sustained-yield forest units abolishes previous O. and C. master unit or sustained-yield forest unit designations. Until new sustained-yield forest units are designated for the first time in accordance with 43 CFR part 5040, the current master unit designations will continue to be in effect.