Title 16, ConservationRelease 119-110

§192b–9 Rocky Mountain National Park, Roosevelt National Forest, and the Arapaho National Forest

Title 16 › CHAPTER 1 — NATIONAL PARKS, MILITARY PARKS, MONUMENTS, AND SEASHORES › SUBCHAPTER XXI — ROCKY MOUNTAIN NATIONAL PARK › § 192b–9

Last updated Sep 22, 2026|Official source

Summary

The law changes the borders of Rocky Mountain National Park, Roosevelt National Forest, and Arapaho National Forest to match a map numbered 121–80,047 dated October 1, 1979. The Twin Sisters area shown as E–5 stays in Rocky Mountain National Park. Land moved into any park or forest must follow that park’s or forest’s rules. Parts already in the Indian Peaks Wilderness that move into Rocky Mountain National Park stay in the National Wilderness Preservation System. Park lands next to the Indian Peaks Wilderness that are moved to the Roosevelt National Forest become part of the Indian Peaks Wilderness. The Secretaries may get lands for the park or forests by donation, purchase with donated or government money, or by exchange. The Secretary of Agriculture may accept title to land in section 30, township 7 north, range 73 west of the sixth principal meridian inside the new park boundary, in exchange for the Secretary of the Interior issuing a patent to land in the Cache La Poudre Wild and Scenic River study corridor; the Agriculture Secretary will then give the park part back to Interior to manage. Federal lands under the Bureau of Land Management in areas E–2 and GL–3 go to Rocky Mountain National Park without payment. If Longmont asks by November 1, 1981, the Interior Secretary must remove up to approximately 129 acres in E–8 for a reservoir by publishing a new boundary. If two full fiscal years after December 22, 1980 pass and the Interior has not bought interests in the approximately 1,200‑acre Old McGregor Ranch in E–2 and the owner asks, the Interior Secretary must restore the old boundary. The Interior Secretary must give up to two acres in GL–5 to Grand Lake, Colorado, without payment. Snowmobiles may be allowed on the East Shore Trail of Shadow Mountain Lake only after a study shows no significant harm to wildlife.

Full Legal Text

Title 16, §192b–9

Conservation, Source: USLM XML via OLRC

(a)Revision of boundaries
The boundaries of Rocky Mountain National Park, the Roosevelt National Forest, and the Arapaho National Forest are revised as generally depicted on the map entitled “Boundary Adjustments, Rocky Mountain National Park”, numbered 121–80,047, dated October 1, 1979, which shall be on file and available for public inspection in the Office of the Director, National Park Service, Department of the Interior, and the Office of the Chief, Forest Service, Department of Agriculture: Provided, That the area shown on such map as E–5 and known as the Twin Sisters area shall remain a part of the Rocky Mountain National Park. All lands added or transferred by this Act to Rocky Mountain National Park, Roosevelt National Forest, and Arapaho National Forest shall be subject to the laws and regulations applicable to the appropriate National Park or National Forest. Lands within the Indian Peaks Wilderness Area as designated by Public Law 95–450 (92 Stat. 1099) [16 U.S.C. 460jj et seq.], that are transferred by this Act to Rocky Mountain National Park shall remain in the National Wilderness Preservation System. Lands within the Rocky Mountain National Park that are adjacent to the Indian Peaks Wilderness and that are transferred by this Act to the Roosevelt National Forest shall be incorporated in and become part of the Indian Peaks Wilderness.
(b)Acquisition of lands and interest; functions of Secretary of the Interior and Secretary of Agriculture
The Secretary of the Interior, with respect to lands added or transferred by this Act to Rocky Mountain National Park, and the Secretary of Agriculture, with respect to lands added or transferred by this Act to Roosevelt and Arap­aho National Forests, may acquire lands and interests in such lands, by donation, purchase with donated or appropriated funds, or by exchange. The Secretary of Agriculture, under section 485 and 486 of this title, may accept on behalf of the United States title to any land in section 30, township 7 north, range 73 west, of the sixth principal meridian which lies within the boundary of Rocky Mountain National Park as revised by this Act, in exchange for which the Secretary of the Interior, notwithstanding section 1279(a) of this title, is authorized to issue patent to lands lying within the Cache La Poudre Wild and Scenic River study corridor. Upon completion of the exchange, the Secretary of Agriculture shall transfer to the administrative jurisdiction by the Secretary of the Interior the portion of such land lying within the boundary of the Rocky Mountain National Park as revised by this Act.
(c)Transfer of certain areas by the Bureau of Land Management
The Federal lands within the administrative jurisdiction of the Bureau of Land Management and within the areas referred to as E–2 and GL–3 on the map referred to in subsection (a) shall be transferred to Rocky Mountain National Park without transfer of funds.
(d)City of Longmont, Colorado; retention of certain areas for the development of a reservoir
If the city of Longmont, Colorado, notifies the Secretary of the Interior that lands within the area referred to as E–8 on the map referred to in subsection (a) of this section that are owned by such city are necessary for the development of a reservoir, the Secretary shall by publication of a revised boundary description in the Federal Register revise the boundary of Rocky Mountain Park within such area to exclude the lands which are necessary for the development of the reservoir: Provided, That the authority of such Secretary to revise the boundary for this purpose shall expire on November 1, 1981; and the only lands which may be excluded are the approximately one hundred twenty-nine acres owned by such city.
(e)Old McGregor Ranch; retention by owners
If after the completion of two complete fiscal years following December 22, 1980, the Secretary of the Interior has not purchased interests in the lands of approximately one thousand two hundred acres known as the Old McGregor Ranch located within the area referred to as E–2 on the map referred to in subsection (a), and the owner of such lands petitions the Secretary to exclude such lands from Rocky Mountain National Park, the Secretary shall by publication of a revised boundary description in the Federal Register return the boundary of Rocky Mountain National Park in such area E–2 to the boundary as it existed before December 22, 1980.
(f)City of Grand Lake, Colorado; conveyance of land by the Secretary
The Secretary of the Interior shall convey, to the city of Grand Lake, Colorado, without compensation or consideration, the lands, not to exceed two acres, within the area referred to as GL–5 on the map referred to in subsection (a).
(g)Use of snowmobiles in certain areas
The Secretary of the Interior may provide for the use of snowmobiles along the East Shore Trail of Shadow Mountain Lake if after study the Secretary determines such use will not result in any significant adverse impact upon wildlife.

Legislative History

Notes & Related Subsidiaries

Editorial Notes

References in Text

This Act, referred to in subsecs. (a) and (b), is Pub. L. 96–560, Dec. 22, 1980, 94 Stat. 3265, which enacted this section and enacted provisions set out as notes under section 1132 and 1133 of this title. For complete classification of this Act to the Code, see Tables. Public Law 95–450 (92 Stat. 1099), referred to in subsec. (a), is Pub. L. 95–450, Oct. 11, 1978, 92 Stat. 1095, known as the Indian Peaks Wilderness Area, the Arapaho National Recreation Area and the Oregon Islands Wilderness Area Act, which is classified principally to subchapter XCIV (§ 460jj et seq.) of this chapter. For complete classification of this Act to the Code, see

Short Title

note set out under section 460jj of this title and Tables.

Statutory Notes and Related Subsidiaries

Encouragement of Land Exchanges Pub. L. 104–333, div. I, title IV, § 408(b), Nov. 12, 1996, 110 Stat. 4153, provided that: “(1) Lands inside rocky mountain national park.—Promptly following enactment of this Act [Nov. 12, 1996], the Secretary of the Interior shall seek to acquire by donation or exchange those lands within the boundaries of Rocky Mountain National Park owned by the city of Longmont, Colorado, that are referred to in section 111(d) of the Act commonly referred to as the ‘Colorado Wilderness Act of 1980’ (Public Law 96–560; 94 Stat. 3272; 16 U.S.C. 192b–9(d)). “(2) Other lands.—The Secretary of Agriculture shall immediately and actively pursue negotiations with the city of Longmont, Colorado, concerning the city’s proposed exchange of lands owned by the city and located in and near Coulson Gulch for other lands owned by the United States. The Secretary shall report to Congress 2 calendar years after the date of enactment of this Act [Nov. 12, 1996], and every 2 years thereafter on the progress of such negotiations until negotiations are complete.”

Reference

Citations & Metadata

Citation

16 U.S.C. § 192b–9

Title 16, Conservation

Last Updated

Sep 22, 2026

Release point: 119-110