General · EdgepediaSeptember 17, 20267 min read

Congaree National Park

Congaree National Park is a United States national park in central South Carolina, southeast of Columbia, that protects the largest contiguous tract of southern old-growth bottomland hardwood forest remaining in the nation. Established in 1976 as Congaree Swamp National Monument and redesignated a national park in 2003, the park covers more than 26,000 acres of floodplain and upland forest along the Congaree and Wateree rivers, whose periodic floods supply the nutrients that sustain the ecosystem.¹

Key fact	Detail
Location	Central South Carolina, roughly 30 km (18.6 miles) southeast of Columbia, in the Congaree River floodplain²
Area	26,546 acres, of which about 21,700 acres are designated wilderness and about 11,000 acres are old-growth forest¹
Established	Congaree Swamp National Monument, October 18, 1976 (Public Law 94-545); redesignated Congaree National Park, November 10, 2003 (P.L. 108-108)¹
Distinction	Largest contiguous stand of southern old-growth bottomland forest remaining in the United States¹
Champion trees	Five national champion trees and 27 state champion trees³
Visitation	287,833 recreation visits in 2025, up 80.5 percent from 159,445 in 2019⁴
Designations	International Biosphere Reserve, National Natural Landmark, Globally Important Bird Area, Ramsar Wetland of International Importance, and (in part) Wilderness Area²

Floodplain ecosystem

The park is predominantly a floodplain forest sustained by the rivers that bound it. Periodic floodwaters from the Congaree and Wateree rivers sweep through the bottomland forest, carrying nutrients and sediments that nourish and rejuvenate the ecosystem; the park's enabling legislation describes its purpose as preserving "an outstanding example of a near-virgin southern hardwood forest situated in the Congaree River floodplain in Richland County, South Carolina."¹ Although traditionally called "The Swamp," the area is actually an alluvial floodplain of the Congaree River, with average annual rainfall of about 39 to 47 inches.⁵

Diversity. The floodplain supports nearly 90 native tree species, and 22 distinct plant communities have been classified in the floodplain portion of the park, with five more on the low bluffs to the north.⁶^•¹ Subtle elevation gradients, only about 20 feet of elevation change across almost 15 miles, determine how long soils stay saturated and therefore which plant communities grow where; the floodplain features flats, ridges, natural and man-made levees, deep-water sloughs, oxbow lakes, and intermittent and permanent streams.¹ The park's waters, including creeks, oxbow lakes, and sloughs, support fish, birds, herpetofauna, mammals, and other aquatic life.⁷

Champion trees. The fertility of the floodplain, favorable growing conditions, and the absence of logging allow trees to grow to very large size, and the largest have been designated champion trees under the National Big Tree Program of American Forests. Before Hurricane Hugo struck in September 1989, the park had 14 state and 7 national champion trees; Hugo's winds destroyed many of them, but the park still contains numerous champions, currently five national and 27 state champions, ranging from pines and oaks on elevated sites to cypress and tupelo in sloughs.¹^•³

Human history

Archaeological evidence suggests humans have inhabited the area for at least 10,000 years. The park and river take their name from the Congaree people, whose population declined sharply in the 17th and 18th centuries, likely from warfare and disease brought by European colonization; survivors were absorbed into neighboring tribes. In April 1541 local chiefdoms met the Spanish expedition led by Hernando de Soto, and in 1701 the English surveyor John Lawson traveled up the Santee to the rivers' confluence.⁸

By the mid-1700s planters claimed much of the floodplain for cash crops such as rice and indigo, building plantations, roads, and ferries, though few succeeded in taming the regular flooding. For enslaved people seeking freedom, the wilderness served as a refuge; maroons lived in the woods, sometimes for years, rather than submit to slavery.⁸

Logging and preservation. After the Civil War, Francis Beidler of Chicago purchased 15,000 acres of the floodplain to harvest old-growth cypress, and over nearly 20 years loggers cut many of the massive trees, floating them downstream to his mill. Logging operations ceased by 1917 because extracting the trees was difficult and costly.⁸ Up to a quarter of what is now the park was clear-cut or selectively logged in the 19th and 20th centuries, but the inaccessibility of some areas preserved pockets of old growth that became the 11,000-acre core of the Congaree Wilderness.⁹

In the 1970s, after earlier efforts by the newspaper editor Harry Hampton had been frustrated, a campaign called "Congaree Action Now" lobbied Congress, convinced the landowners to sell, and led to the 1976 monument designation. The visitor center is named for Hampton.⁸^•⁹ Congress redesignated the monument a national park on November 10, 2003.¹ In October 2026 the park marked its 50th anniversary with commemorative events at the Harry Hampton Visitor Center.¹⁰

Visiting the park

Congaree is over 80 percent federally designated wilderness and can be explored on ten trails, by paddling Cedar Creek, or by camping in primitive campgrounds or the backcountry.¹¹ The most popular and accessible route is the Boardwalk Trail, which starts near the Harry Hampton Visitor Center; a free self-guided boardwalk tour brochure is available there.¹¹^•¹²

Paddling. The marked Cedar Creek Canoe Trail winds about 15 miles through the wilderness from Bannister's Bridge to the Congaree River, passing through old-growth forest that contains some of the tallest trees in eastern North America. Visitors must bring their own canoes or kayaks, launching from Bannister's Bridge or South Cedar Creek landings.¹³ The Congaree River Blue Trail, a 50-mile designated paddle trail, runs from Columbia downstream to the park; backcountry camping in the park requires a permit.¹⁴ The park also offers fishing, ranger-led programs, and loans wheelchairs and adaptive kayaking equipment free of charge.¹¹

Visitation has grown substantially: annual recreation visits rose from 159,445 in 2019 to 287,833 in 2025, with May the busiest month and August the quietest.⁴

Research and threats

Because the park sits downstream of Columbia and other urban and agricultural areas, it is hydrologically vulnerable. A USGS study conducted with the National Park Service collected 72 water and sediment samples from 16 river and lake sites and found 49 pharmaceuticals and 47 other contaminants, including pesticides and wastewater-associated chemicals. Metformin, a diabetes drug, was the most frequently detected pharmaceutical, found in 61 percent of samples, and the insect repellent DEET appeared in 71 percent of water samples. All detections were below levels considered a risk to human health, and the park's low-oxygen floodplain conditions are not conducive to biodegradation, so most detected contaminants persist.¹⁵

Invasive species and climate. Invasive species are among the most serious problems facing the park; non-native wild pigs root and wallow in the forest, and feral hog rooting was observed in 73 percent of alluvial vegetation plots in a 2021 monitoring effort, which also recorded seven invasive plant species including Chinese privet and Japanese stilt grass.¹⁶^•² Climate change is shifting rainfall in the watershed toward short downbursts that can increase flash flooding, and projections suggest a warmer, drier future with reduced water resources, more intense storms capable of felling big trees, increased fire, and expanding invasive species.¹⁷^•¹ Long-term monitoring continues: the Southeast Coast Network established 64 permanent vegetation plots in 2021, observing 295 plant species including 37 taxa not previously detected in park surveys.²

References

Topic: Encyclopedia › Places and geography › Parks, protected areas, and geographic heritage sites › Protected natural areas › United States national parks and NPS units

Initially written Sep 17, 2026 · Reviewed: Oct 21, 2026 · Edited: Oct 15, 2026; Oct 21, 2026 · Last review: Oct 21, 2026

Notice something wrong?