Public land

Arapaho National Wildlife Refuge

National Wildlife Refuge - U.S. Fish and Wildlife Service

Colorado - 51,089 acres

Eau Claire County Forest

Local Conservation Area - County Land

Wisconsin - 51,032 acres

Canaan Bog

Protected Natural Area - Forest Planning & Stewardship Branch, Department of Natural Resources and Energy Development, Government of New Brunswick

New Brunswick - 51,031 acres

Greater Victoria Water Supply Area

Water Supply Area - Capital Region District

British Columbia - 50,912 acres

Fundy National Park Of Canada

National Park - Parks Canada Agency

New Brunswick - 50,879 acres

Pigeon Lake Wilderness

State Wilderness - State Department of Conservation

New York - 50,875 acres

NUNTSI PARK

A - Park - Government of British Columbia

British Columbia - 50,830 acres

Pu'u Wa'awa'a Cooperative Game Management Area

State Conservation Area - State Department of Natural Resources

Hawaii - 50,795 acres

Slide Mountain Wilderness

State Wilderness - State Department of Conservation

New York - 50,750 acres

State Game Land 013

State Resource Management Area - State Fish and Wildlife

Pennsylvania - 50,743 acres

Shenandoah Wildlife Management Area

State Conservation Area - State Department of Natural Resources

West Virginia - 50,719 acres

Obabika River Provincial Park (Waterway Class)

Provincial Park - Ontario Parks

Ontario - 50,706 acres

Mammoth Cave National Park

National Park - National Park Service

Kentucky - 50,624 acres

Allegan State Game Area

State Conservation Area - State Fish and Wildlife

Michigan - 50,591 acres

Catahoula National Wildlife Refuge

National Wildlife Refuge - U.S. Fish and Wildlife Service

Louisiana - 50,476 acres

Chic-Chocs Territorial reserve for protected area purposes

Land reserved for protected area - Ministère de l'Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs, Direction des aires protégées

Quebec - 50,120 acres

Greenwater Lake Provincial Park

Natural Environment Park - Government of Saskatchewan, Ministry of Tourism, Parks, Culture and Sport

Saskatchewan - 50,025 acres

Don Edwards San Francisco Bay National Wildlife Refuge

National Wildlife Refuge - U.S. Fish and Wildlife Service

California - 49,959 acres

Blue Cypress Conservation Area

Local Conservation Area - Regional Water Districts

Florida - 49,925 acres

Bitter Lake National Wildlife Refuge

National Wildlife Refuge - U.S. Fish and Wildlife Service

New Mexico - 49,722 acres

National Elk Refuge

National Wildlife Refuge - U.S. Fish and Wildlife Service

Wyoming - 49,708 acres

Norfork Recreation Area

Recreation Management Area - Army Corps of Engineers

Arkansas - 49,604 acres

Medway Lakes Wilderness Area

Wilderness Area - Nova Scotia Environment and Climate Change

Nova Scotia - 49,454 acres

UPPER LILLOOET PARK

A - Park - Government of British Columbia

British Columbia - 49,411 acres

Marble Mountains Wildlife Area

State Conservation Area - State Fish and Wildlife

California - 49,370 acres

Rideau Canal National Historic Site

National Historic Site - Parks Canada Agency

Ontario - 49,352 acres

BISHOP RIVER PARK

A - Park - Government of British Columbia

British Columbia - 49,290 acres

St. Catherine Creek National Wildlife Refuge

National Wildlife Refuge - U.S. Fish and Wildlife Service

Mississippi - 49,195 acres

Harriman State Park

State Park - State Park and Recreation

New York - 48,873 acres

R J D Memorial Hardwood State Forest

State Resource Management Area - State Department of Natural Resources

Minnesota - 48,804 acres

Cameron Prairie National Wildlife Refuge

National Wildlife Refuge - U.S. Fish and Wildlife Service

Louisiana - 48,783 acres

Jackson Demonstration State Forest

State Resource Management Area - State Department of Natural Resources

California - 48,719 acres

Ash Meadows National Wildlife Refuge

National Wildlife Refuge - U.S. Fish and Wildlife Service

Nevada - 48,692 acres

Kouchibouguac National Park Of Canada

National Park - Parks Canada Agency

New Brunswick - 48,687 acres

Otter Tail County Waterfowl Production Area

Resource Management Area - U.S. Fish and Wildlife Service

Minnesota - 48,608 acres

Jessup River Wild Forest

State Conservation Area - State Department of Conservation

New York - 48,583 acres

TUTSHI LAKE/T'OOCH' ÁAYI CONSERVANCY

Conservancy - Government of British Columbia

British Columbia - 48,531 acres

CHUKACHIDA PROTECTED AREA

Protected Area - Government of British Columbia

British Columbia - 48,524 acres

Arctic Red River Spawning Ground

Conservation zone in regional land use plan - Indigenous Government; Government of the Northwest Territories; Federal Government (Crown-Indigenous Relations And Northern Affairs Canada)

Northwest Territories - 48,433 acres

Upper Klamath National Wildlife Refuge

National Wildlife Refuge - U.S. Fish and Wildlife Service

Oregon - 48,356 acres

DUNN PEAK PARK

Protected Area - Government of British Columbia

British Columbia - 48,302 acres

Blue Ridge Wilderness

State Wilderness - State Department of Conservation

New York - 48,300 acres

American Electric Power Fee

Private Other or Unknown - Private

Ohio - 48,274 acres

Primrose Lake Provincial Ecological Reserve

Ecological Reserve - Government of Saskatchewan, Ministry of Environment

Saskatchewan - 48,261 acres

Campus Lake Conservation Reserve

Conservation Reserve - Ontario Parks

Ontario - 48,067 acres

Elk Island National Park Of Canada

National Park - Parks Canada Agency

Alberta - 47,943 acres

NATION LAKES PARK

A - Park - Government of British Columbia

British Columbia - 47,933 acres

Forbes State Forest

State Resource Management Area - State Department of Natural Resources

Pennsylvania - 47,901 acres