Sandstone-colored welcome sign with "Mojave National Preserve", the NPS logo, and a tree
Entrance sign to Mojave National Preserve

There are 21 protected areas of the United States designated as national preserves. They were established by an act of Congress to protect areas that have resources often associated with national parks but where certain natural resource-extractive activities such as hunting and mining may be permitted, provided their natural values are preserved.[1][2][3] The activities permitted in each national preserve vary depending on the enabling legislation of the unit.[4] All national preserves are managed by the National Park Service (NPS) as part of the National Park System.

Eleven national preserves are co-managed with national parks or national monuments; because hunting is forbidden in those units, preserves provide a similar level of protection from development but allow hunting and in some cases grazing. Nine of those are counted as separate official units, while New River Gorge National Park and Preserve and Oregon Caves National Monument and Preserve are each single units, though there is no administrative difference. The remaining ten are stand-alone units. Jean Lafitte National Historical Park and Preserve has a preserve site that is managed like one, but is not distinguished as a national preserve in the authorizing legislation and is not listed here. The Salt River Bay National Historical Park and Ecological Preserve is a unique designation that is dissimilar to national preserves.

National preserves are located in eleven states; Alaska is home to ten of them, including the largest, Noatak National Preserve. Their total area is 24,651,566 acres (99,761 km2), 86% of which is in Alaska. All national preserves except Tallgrass Prairie permit hunting in accordance with local regulations.[5] A national preserve differs from a national reserve as management of reserves can be delegated to the state in which they are located.[6]

History

Wooden rectangular sign saying "Denali National Park and Preserve" with pictures of a mountain goat and a mountain
Entrance sign to Denali National Park and Preserve

The first national preserves were Big Thicket National Preserve in Texas and Big Cypress National Preserve in Florida, both established in 1974. The Big Cypress Swamp, adjacent to Everglades National Park and originally intended to be included in it, was at risk of destruction by a proposed airport. Opposition by conservationists and studies showing the swamp's role in water protection led to its cancellation after one runway was built, and President Richard Nixon proposed the area's preservation as Big Cypress National Fresh Water Reserve to protect the local water supply.[7] Congressional deliberation resulted in a new designation of a national preserve that bought out private landowners to conserve "the natural, scenic, hydrologic, floral and faunaI, and recreational values of the Big Cypress Watershed,"[8] though off-road vehicle use, oil extraction, hunting, and traditional use by the Miccosukee and Seminole Tribes are permitted.[9]

The Big Thicket, a large area of swamps and forests, was originally proposed to be preserved as a state park or national park, but these were opposed by timber firms who wanted to retain their logging lands. A 1967 survey by the National Park Service proposed establishing nine units representative of the variety of plant life in the region, but because the thicket was already fragmented by roads and logging, it would not qualify as a national park. National monument was also deemed a suboptimal designation, and compromise on the boundary and management provisions eventually led to its establishment as a national preserve.[10] The bills creating both preserves were signed on the same day by President Gerald Ford and contained similar wording limiting construction, agriculture, and mineral extraction to that still assuring the area's "natural and ecological integrity in perpetuity," while permitting hunting.[11][12]

Following President Jimmy Carter's 1978 establishment of 17 national monuments in Alaska, the Alaska National Interest Lands Conservation Act of 1980 redesignated four as national preserves and six as national parks or monuments paired with a preserve. These had been recommended during the legislative process as early as 1974 to resolve the issue of sport hunting at Lake Clark after it was used for Big Thicket and Big Cypress.[13] While this was not the primary factor in the naming of the original national preserves, it presented a compromise to protect scenic lands and allow hunting in the National Park System without breaking precedent in parks and monuments that forbid it.[14] The national preserves are managed in the same way as national parks, except that regulated hunting, fishing, and trapping for sport and subsistence are permitted, though the NPS can close areas to such practices as needed.[4] Although hunting was also allowed at most national recreation areas, this was a major change in NPS wildlife management with a fifth of its land now open to it.[14]

Five new units were established from 1988 to 2000, two of which are partnerships with local governments and landowners. The Timucuan Ecological and Historic Preserve includes sites owned by Florida State Parks, the city of Jacksonville, and private landowners. The Tallgrass Prairie National Preserve is so designated to accommodate a public-private partnership reducing federal land ownership,[15] and it is almost entirely owned by The Nature Conservancy. Valles Caldera National Preserve was originally established in 2000 to be operated by an independent trust, but its management was transferred to the National Park Service in 2015.[16]

The four most recently established national preserves were all expansions or redesignations of existing NPS sites. Great Sand Dunes National Monument was redesignated a national park, and the mountainous wilderness area transferred to it from the U.S. Forest Service became the preserve.[17] President Bill Clinton expanded Craters of the Moon National Monument using the Antiquities Act, and most of the expanded area was redesignated a national preserve two years later to permit hunting.[18] Oregon Caves National Monument gained its preserve lands from Rogue River–Siskiyou National Forest, increasing the unit's size ninefold.[19] Ten percent of New River Gorge National River was redesignated a national park where hunting was disallowed, and the remainder became New River Gorge National Preserve with little change.[20]

List of national preserves

Preserves paired with a national park or monument do not have visitation separately recorded. Their combined visitor counts are marked in italics, as the number visiting the preserve portions may be substantially smaller. Among these eleven, only Lake Clark and Wrangell–St. Elias have most of their facilities in the preserve.

List of national preserves
Name Image Location Managed with Date established[3] Area[21] Visitors (2020)[22] Ref
Aniakchak Wide flat beach with snow-capped mountains in the background Alaska

56°48′N 157°42′W / 56.8°N 157.7°W / 56.8; -157.7 (Aniakchak National Monument and Preserve)

 Monument Dec 2, 1980 464,117 acres (1,878.2 km2) 36 The coastal plains and mountains of the Aleutian Range around Mount Aniakchak, a 3,700-year-old volcanic caldera, make up this facility-free preserve reachable only by plane. In addition to hiking and hunting, some visitors raft down the Aniakchak River, a National Wild River, from the volcano to the sea, though its inaccessibility and unpredictable weather make it the least-visited unit of the National Park System.[23]
Bering Land Bridge View from the top a hill of a grassy valley and rocks in the foreground Alaska

65°50′N 164°10′W / 65.83°N 164.17°W / 65.83; -164.17 (Bering Land Bridge National Preserve)

 – Dec 2, 1980 2,697,391 acres (10,916.0 km2) 2,642 The pristine Seward Peninsula is what remains of the ice age Bering land bridge. The Chukchi Sea coast, Imuruk Lake volcanic field, maar lakes, and tundra support Arctic animals including migrating caribou, polar bears, walrus, muskox, and ribbon seals. Visitors snowmobile, watch for 170 species of birds, soak in hot springs, and hike on tundra and lava fields.[24]
Big Cypress A stand of white cypress trees growing out of the water Florida

25°52′N 81°02′W / 25.86°N 81.03°W / 25.86; -81.03 (Big Cypress National Preserve)

 – Oct 11, 1974 720,564 acres (2,916.0 km2) 1,181,930 Adjoining Everglades National Park, the Big Cypress Swamp is home to mangroves, cypress trees, alligators, and Florida panthers. It can be accessed by hiking along the start of the Florida Trail, biking, canoeing, kayaking, airboat, and swamp buggies.[25]
Big Thicket Scattered narrow trees among an expanse of shrubs Texas

30°33′N 94°20′W / 30.55°N 94.34°W / 30.55; -94.34 (Big Thicket National Preserve)

 – Oct 11, 1974 113,121 acres (457.8 km2) 309,053 The Big Thicket includes several diverse ecosystems within the Piney Woods, with upland pine habitats, open grassy areas, sloped deciduous forests, floodplains, prairies, and swamps intertwined together, but little old-growth forest remains. They are home to nine-banded armadillos, bobcats, river otters, alligators, and 33 snakes. Nine major units are connected by six waterway corridors along the Neches River and its tributary creeks.[26]
Craters of the Moon Dark lava flow with grasses growing out of its cracks and a forested hillside in the background Idaho

42°16′N 113°23′W / 42.26°N 113.38°W / 42.26; -113.38 (Craters of the Moon National Monument and Preserve)

 Monument Aug 21, 2002 410,733 acres (1,662.2 km2) 250,872 This preserve covers most of the lava fields of the Great Rift of Idaho that erupted 15,000 to 2,000 years ago. Its volcanic features include many cinder cones and spatter cones, lava tubes and fissures, and tree molds made of ʻaʻa, pahoehoe, and block lava. These basaltic flows support wildflowers, shrubs, limber pines, and Rocky Mountain junipers.[27]
Denali Aerial photo of the Denali and the snowy Alaska Range with a glacier leading to a river Alaska

62°30′N 152°18′W / 62.5°N 152.3°W / 62.5; -152.3 (Denali National Park and Preserve)

 Park Dec 2, 1980 1,334,117 acres (5,399.0 km2) 54,850 With the national park centered around Denali, the national preserve has two sections: one to the northwest encompassing lakes in the Highpower Creek and Muddy River areas and one including the southwest end of the Alaska Range around Mount Dall and Dall Glacier, the Kichatna Mountains, and the Yentna River.[28]
Gates of the Arctic Still lake reflecting a steep, wide, rocky mountain ridge Alaska

66°54′N 154°42′W / 66.9°N 154.7°W / 66.9; -154.7 (Gates of the Arctic National Park and Preserve)

 Park Dec 2, 1980 948,608 acres (3,838.9 km2) 2,872 The preserve has two sections, one on the northeast of the park around the Itkillik River and the other on the south side around the Kobuk River. Beyond viewing and hunting black bear, grizzly bear, Dall sheep, moose, and smaller game, visitors can float and fish on the Kobuk, a designated Wild River.[29]
Glacier Bay Aerial photo of the mouth of a river with several small islands, next to a sandy peninsula with mountains in the background Alaska

59°06′N 138°24′W / 59.1°N 138.4°W / 59.1; -138.4 (Glacier Bay National Park and Preserve)

 Park Dec 2, 1980 58,406 acres (236.4 km2) 5,784 While Glacier Bay and its surrounding mountainous icefields and tidewater glaciers make up the national park, the preserve is a flatter area in the northwest between the Alsek River, its Dry Bay delta, and the Deception Hills. Visitors fish and hunt, raft the river, and ATV on trails.[30][31]
Great Sand Dunes Aerial photo of the Great Sand Dunes partially surrounded by a mountains range with ridges and valleys Colorado

37°48′N 105°30′W / 37.8°N 105.5°W / 37.8; -105.5 (Great Sand Dunes National Park and Preserve)

 Park Nov 22, 2000 41,686 acres (168.7 km2) 461,532 This preserve includes the Sangre de Cristo Mountains, including Tijeras Peak and Mount Herard, that rise above North America's tallest sand dunes in the national park. Trails among the montane forests lead up to alpine lakes and Mosca Pass.[32]
Katmai A hiker stands on a mountain summit near a rocky outcropping, with a vast landscape with lakes in the background Alaska

59°06′N 155°12′W / 59.1°N 155.2°W / 59.1; -155.2 (Katmai National Park and Preserve)

 Park Dec 2, 1980 418,698 acres (1,694.4 km2) 51,511 Nonvianuk Lake and Kukaklek Lake, source of the Alagnak Wild River, and Moraine and Funnel Creeks are rich with salmon that attract a large population of bears. There are no roads but it has fly-in access to fly fishing, backpacking, and bear and moose hunting.[33]
Lake Clark Aerial photo of a long Lake Clark with snowy mountains behind it Alaska

60°58′N 153°55′W / 60.97°N 153.92°W / 60.97; -153.92 (Lake Clark National Park and Preserve)

 Park Dec 2, 1980 1,410,293 acres (5,707.3 km2) 4,948 Lake Clark and other glacially carved lakes near the Chigmit Mountains are important spawning grounds for sockeye salmon. The valley and foothill areas are rich with boreal forests that provide habitat for brown and black bears, Dall sheep, moose, caribou, peregrine falcon, and timber wolf.[34]
Little River Canyon A waterfall flows over rocks by a forest in fall colors Alabama

34°26′N 85°36′W / 34.44°N 85.6°W / 34.44; -85.6 (Little River Canyon National Preserve)

 – Oct 24, 1992 15,291 acres (61.9 km2) 802,375 The Little River flows atop Lookout Mountain, with waterfalls, bluffs, and cliffs along its canyon. A scenic highway runs along the rim, with hiking trails down to the river for rock climbing, fishing, and kayaking.[35]
Mojave Rocky desert mountains with shrubs and yucca plants in the foreground California

34°54′N 115°42′W / 34.9°N 115.7°W / 34.9; -115.7 (Mojave National Preserve)

 – Oct 31, 1994 1,547,955 acres (6,264.4 km2) 608,633 The Mojave Desert is characterized by its warm but temperate climate, featuring Creosote bush, cholla cacti, and a Joshua tree forest. The region includes the 600 ft (180 m) tall Kelso Dunes that sing, the Cima volcanic field with dozens of cinder cones and lava fields, and abandoned homesteads and mines.[36]
New River Gorge Grandview overlook of the New River in a horseshoe bend with a V-shaped valley covered in forest West Virginia

37°52′N 81°02′W / 37.87°N 81.03°W / 37.87; -81.03 (New River Gorge National Park and Preserve)

 Park Dec 21, 2020 65,165 acres (263.7 km2) 1,054,374 The New River, one of the oldest rivers in North America, carved this V-shaped canyon in the Appalachian Mountains with sandstone and shale cliffs popular for advanced rock climbing. Its ancient Appalachian mixed mesophytic forest on varied topography connects northern mountain and Atlantic coastal species for a highly diverse ecosystem. The river's enormous rapids provide for excellent whitewater rafting.[37]
Noatak Wide treeless valley between sloping mountains with a snow-capped mountain in the background Alaska

68°00′N 159°30′W / 68°N 159.5°W / 68; -159.5 (Noatak National Preserve)

 – Dec 2, 1980 6,587,071 acres (26,656.9 km2) 12,533 The pristine Noatak River basin lies between the Baird and De Long Mountains of the Brooks Range, connecting tundra to taiga. It is a migration route for hundreds of thousands of caribou, Alaska moose, and brown bears.[38]
Oregon Caves Overlook of a forested mountainside from above Oregon

42°06′N 123°23′W / 42.1°N 123.38°W / 42.1; -123.38 (Oregon Caves National Monument and Preserve)

 Monument Dec 19, 2014 4,070 acres (16.5 km2) 22,789 While the marble Oregon Caves extend deep under the national monument, above ground the preserve has forests, meadows, streams, and mountains. Hiking trails lead to Mount Elijah and the Bigelow Lakes with views of the Siskiyou Mountains.[39]
Tallgrass Prairie Black eyed Susan flowers among a rolling expanse of grass Kansas

38°26′N 96°34′W / 38.43°N 96.56°W / 38.43; -96.56 (Tallgrass Prairie National Preserve)

 – Nov 12, 1996 10,882 acres (44.0 km2) 29,009 Nearly all of the tallgrass prairie ecosystem has been replaced by farmland, and this area of the Flint Hills maintains its diverse plant and animal life at a former ranch. Controlled burns and a reintroduced bison herd keep the land fertile.[40]
Timucuan Ecological and
Historic Preserve		 Sunset over a marsh with grasses growing in a river next to a forest Florida

30°27′N 81°27′W / 30.45°N 81.45°W / 30.45; -81.45 (Timucuan Ecological and Historic Preserve)

 – Feb 16, 1988 46,262 acres (187.2 km2) 1,017,373 These wetlands at the mouth of the Nassau and St. Johns Rivers have salt marshes, tropical hardwood hammocks, and coastal dunes. Archeological excavations have found Timucua artifacts dating back thousands of years. It also includes the Kingsley Plantation and Fort Caroline National Memorial.[41]
Valles Caldera Overlook of a large grassy meadow surrounded by the forested caldera rim New Mexico

35°54′N 106°30′W / 35.9°N 106.5°W / 35.9; -106.5 (Valles Caldera National Preserve)

 – July 25, 2000 89,766 acres (363.3 km2) 30,434 The Valles Caldera was formed in a volcanic eruption 1.25 million years ago and still has an active geothermal system. Its rim is 13 mi (21 km) in diameter, with wide grassy meadow valleys divided by resurgent domes including Redondo Peak. There are large populations of elk, Gunnison's prairie dogs, badgers, and golden eagles.[42]
Wrangell–St. Elias Aerial photo of a long river coming from a distant glacier among the rocky mountains Alaska

61°26′N 142°57′W / 61.44°N 142.95°W / 61.44; -142.95 (Wrangell–St. Elias National Park and Preserve)

 Park Dec 2, 1980 4,852,644 acres (19,638.0 km2) 16,655 Paired with America's largest national park, this preserve is generally the lower-elevation areas around the Wrangell Mountains, including the Kennicott and Nabesna Glaciers that flow into the Nizina and Nabesna Rivers, respectively, that can be rafted. The abandoned Kennecott Mines were once a major source of copper and are now the preserve's main historic attraction.[43]
Yukon–Charley Rivers Aerial photo of the narrow horseshoe-bent Charley River flowing into the wide Yukon river with islands in the middle and nearby lakes Alaska

65°00′N 143°30′W / 65°N 143.5°W / 65; -143.5 (Yukon–Charley Rivers National Preserve)

 – Dec 2, 1980 2,526,512 acres (10,224.4 km2) 666 Including the entirety of the Charley River watershed and 130 mi (210 km) of the Yukon River, this preserve protects their surrounding mountains and bluffs that are habitat for diverse Arctic wildlife like peregrine falcons, caribou, and salmon. Summer visitors float down the rivers and see remnants of gold mining, and in the winter dog sledders race in the Yukon Quest.[44]

See also

Wikimedia Commons has media related to National Preserves of the United States.

References

  1. ↑ "Designations of National Park System Units". National Park Service. Archived from the original on March 18, 2021. Retrieved March 29, 2021.
  2. ↑ Mackintosh, Barry (2005). The National Parks: Shaping the System. U.S. Department of the Interior. pp. 75–95. ISBN 978-0-912627-73-1. Archived from the original on April 21, 2021. Retrieved April 1, 2021.
  3. 1 2 The National Parks: Index 2012–2016 (PDF). National Park Service. Archived (PDF) from the original on November 13, 2018. Retrieved November 19, 2018.
  4. 1 2 16 USC 3201 – Administration of national preserves Archived December 22, 2017, at the Wayback Machine Retrieved October 4, 2021. Legal Information Institute.
  5. ↑ "Here's Where You Can Hunt And Trap In The National Park System". National Parks Traveler. July 14, 2020. Archived from the original on November 1, 2020. Retrieved December 12, 2020.
  6. ↑ "What's In a Name? Discover National Park System Designations". National Park Service. Archived from the original on October 27, 2018. Retrieved October 26, 2018.
  7. ↑ Nixon, Richard (February 8, 1972), "51 – Special Message to the Congress Outlining the 1972 Environmental Program", The American Presidency Project, archived from the original on May 7, 2021, retrieved October 4, 2021
  8. ↑ Paige, John C.; Van Horn, Lawrence F. (1982). "An Ethnohistory of Big Cypress National Preserve, Florida" (PDF). National Park Service. Archived (PDF) from the original on October 4, 2021. Retrieved April 1, 2021.
  9. ↑ "A National Preserve - One Land, Many Uses - Big Cypress National Preserve". National Park Service. Archived from the original on June 2, 2021. Retrieved May 29, 2021.
  10. ↑ Cozine, James (October 1, 1993). "Defining the Big Thicket: Prelude to Preservation". East Texas Historical Journal. 31 (2). ISSN 0424-1444. Archived from the original on July 15, 2020. Retrieved April 1, 2021.
  11. ↑ Pub. L.Tooltip Public Law (United States) 93–440: To establish the Big Cypress National Reserve in the State of Florida, and for other purposes
  12. ↑ Pub. L.Tooltip Public Law (United States) 93–439: To authorize the establishment of the Big Thicket National Preserve in the State of Texas, and for other purposes.
  13. ↑ Williss, G. Frank (September 1985). "'Do Things Right the First Time' Administrative History: The National Park Service and the Alaska National Interest Lands Conservation Act of 1980". NPS History. National Park Service. Archived from the original on July 28, 2020. Retrieved April 2, 2021.
  14. 1 2 Funk, David (June 1990). "The Alaska National Interest Lands Conservation Act and the National Park Service in Alaska: A Primer" (PDF). NPS History. Archived (PDF) from the original on July 18, 2017. Retrieved April 1, 2021.
  15. ↑ Conard, Rebecca (1998). "Convergence". Tallgrass Prairie National Preserve Legislative History, 1920–1996. National Park Service. Archived from the original on June 15, 2019. Retrieved April 2, 2021.
  16. ↑ "Laws & Policies – Valles Caldera National Preserve". National Park Service. Archived from the original on March 26, 2021. Retrieved April 2, 2021.
  17. ↑ "Foundation Document – Great Sand Dunes National Park and Preserve" (PDF). National Park Service. January 2017. p. 50. Archived (PDF) from the original on October 4, 2021. Retrieved April 2, 2021.
  18. ↑ "Record of Decision – Craters Of The Moon National Monument & Preserve". National Park Service. Archived from the original on November 11, 2020. Retrieved April 1, 2021.
  19. ↑ Urness, Zach (December 4, 2014). "Six Things to Know About Oregon Caves Expansion". Statesman Journal. Archived from the original on February 1, 2021. Retrieved April 1, 2021.
  20. ↑ Averill, Graham (December 22, 2020). "West Virginia's New River Gorge Will Be Our 63rd National Park". Outside Online. Archived from the original on April 10, 2021. Retrieved April 1, 2021.
  21. ↑ "Listing of Acreage (Summary)" (PDF). NPS Stats. National Park Service. December 31, 2020. Archived (PDF) from the original on January 13, 2021. Retrieved January 25, 2021.
  22. ↑ "Stats Report Viewer". National Park Service. Archived from the original on July 13, 2015. Retrieved April 18, 2019.
  23. ↑ "Aniakchak National Monument and Preserve". National Park Service. Archived from the original on August 28, 2010. Retrieved March 29, 2021.
  24. ↑ "Bering Land Bridge National Preserve". National Park Service. Archived from the original on August 30, 2010. Retrieved March 29, 2021.
  25. ↑ "Big Cypress National Preserve". National Park Service. Archived from the original on March 13, 2016. Retrieved March 29, 2021.
  26. ↑ "Big Thicket National Preserve". National Park Service. Archived from the original on March 14, 2016. Retrieved March 29, 2021.
  27. ↑ "Craters of the Moon National Monument and Preserve". National Park Service. Archived from the original on October 10, 2010. Retrieved March 29, 2021.
  28. ↑ "Denali National Park and Preserve". National Park Service. Archived from the original on October 10, 2010. Retrieved March 29, 2021.
  29. ↑ "Gates of the Arctic National Park and Preserve". National Park Service. Archived from the original on August 28, 2010. Retrieved March 29, 2021.
  30. ↑ "Glacier Bay National Park and Preserve". National Park Service. Archived from the original on October 10, 2010. Retrieved March 29, 2021.
  31. ↑ "Glacier Bay National Preserve – Glacier Bay National Park & Preserve". National Park Service. Archived from the original on June 2, 2021. Retrieved June 2, 2021.
  32. ↑ "Great Sand Dunes National Park and Preserve". National Park Service. Archived from the original on October 22, 2010. Retrieved March 29, 2021.
  33. ↑ "Katmai National Park and Preserve". National Park Service. Archived from the original on October 10, 2010. Retrieved March 29, 2021.
  34. ↑ "Lake Clark National Park and Preserve". National Park Service. Archived from the original on August 28, 2010. Retrieved March 29, 2021.
  35. ↑ "Little River Canyon National Preserve". National Park Service. Archived from the original on October 10, 2010. Retrieved March 29, 2021.
  36. ↑ "Mojave National Preserve". National Park Service. Archived from the original on October 31, 2010. Retrieved March 29, 2021.
  37. ↑ "New River Gorge National Park and Preserve". National Park Service. Archived from the original on October 13, 2010. Retrieved March 29, 2021.
  38. ↑ "Noatak National Preserve". National Park Service. Archived from the original on August 28, 2010. Retrieved March 29, 2021.
  39. ↑ "Oregon Caves National Monument and Preserve". National Park Service. Archived from the original on November 4, 2010. Retrieved March 29, 2021.
  40. ↑ "Tallgrass Prairie National Preserve". National Park Service. Archived from the original on August 30, 2010. Retrieved March 29, 2021.
  41. ↑ "Timucuan Ecological and Historic Preserve". National Park Service. Archived from the original on October 13, 2010. Retrieved March 29, 2021.
  42. ↑ "Valles Caldera National Preserve". National Park Service. Archived from the original on March 14, 2016. Retrieved March 29, 2021.
  43. ↑ "Wrangell–St. Elias National Park and Preserve". National Park Service. Archived from the original on August 30, 2010. Retrieved March 29, 2021.
  44. ↑ "Yukon–Charley Rivers National Preserve". National Park Service. Archived from the original on August 28, 2010. Retrieved March 29, 2021.
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