40 CFR § 81.406 - Colorado.

---
identifier: "/us/cfr/t40/s81.406"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 81.406 - Colorado."
title_number: 40
title_name: "Protection of Environment"
section_number: "81.406"
section_name: "Colorado."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "C"
subchapter_name: "AIR PROGRAMS"
part_number: "81"
part_name: "DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 7401,"
regulatory_source: "36 FR 22421, Nov. 25, 1971, unless otherwise noted."
cfr_part: "81"
---


# 81.406 Colorado.

| Area name | Acreage | Public Law establishing | Federal land manager |
| --- | --- | --- | --- |
| Black Canyon of the Gunnison Wild | 11,180 | 94-567 | USDI-NPS |
| Eagles Nest Wild | 133,910 | 94-352 | USDA-FS |
| Flat Tops Wild | 235,230 | 94-146 | USDA-FS |
| Great Sand Dunes Wild | 33,450 | 94-567 | USDI-NPS |
| La Garita Wild | 48,486 | 88-577 | USDA-FS |
| Maroon Bells-Snowmass Wild | 71,060 | 88-577 | USDA-FS |
| Mesa Verde NP | 51,488 | 59-353 | USDI-NPS |
| Mount Zirkel Wild | 72,472 | 88-577 | USDA-FS |
| Rawah Wild | 26,674 | 88-577 | USDA-FS |
| Rocky Mountain NP | 263,138 | 63-238 | USDI-NPS |
| Weminuche Wild | 400,907 | 93-632 | USDA-FS |
| West Elk Wild | 61,412 | 88-577 | USDA-FS |