Coosawhatchie River

About

Coosawhatchie River, South Carolina — 1740 Trappers Settlement, 1840s-1880s Rice, 1990s-2010s Coosawhatchie Trail 50-mi Ridgeland. Long before any store or courthouse, the Coosawhatchie flowed through the ancestral territory of the Catawba, the Eastern Band of Cherokee, the Muscogee (Creek), the Cusabo, and the Yemassee. The river served as a primary travel corridor, fishing ground, and gathering place. The 1761–1763 Catawba Treaty, the 1817 Treaty of Old Town, and the 1826–1830 Indian Removal Acts established the cession framework that displaced those peoples, though the Catawba Indian Nation, the Eastern Band of Cherokee Indians, and the Muscogee (Creek) Nation maintain cultural connections to the watershed today.

Permanent European settlement arrived in the 1740s. Trappers from the King's Highway — the road running between Boston and Charlestown — gathered around a store owned by Henry and Daniel DeSaussure, and the settlement of Coosawhatchie began to grow in the early 1700s around the Coosawhatchie River Bridge as other settlers built extensive rice plantations. Henry DeSaussure opened a store and lodging home at the foot of that bridge. In 1788, Coosawhatchie was named the government seat of Beaufort District, and a courthouse rose on the riverbank to administer the surrounding Lowcountry parishes. The 1740 era was the trappers' settlement period; the 1840s–1880s brought the rice era.

From the 1700s through the 1920s, the Coosawhatchie was logged to feed the 1750–1910 South Carolina longleaf-pine, cypress, and hardwood industry, the 1800–1865 rice-belt and cotton-belt agriculture, and the 1865–1920s Reconstruction-era lumber operations. Local sawmills and turpentine stills, logging drives, and the 1875–1920s cross-tie and naval-stores industries were the major operators. Large-scale cutting ended with the 1920s exhaustion of the longleaf pine, the 1930s creation of the Francis Marion National Forest, and the 1930s CCC plantings.

The river's hydrology entered the record with the 1900s–1930s USGS South Carolina Survey, followed by the establishment of a USGS gauging station in the 1930s–1950s and 1950s–1970s water-quality studies. Later, 1970s–1990s South Carolina Department of Health and Environmental Control studies and the 2000–2024 SC DHEC Total Maximum Daily Load program addressed more than a century of logging, agricultural, and industrial impacts. USGS gauge 02176500 tracks conditions on the river.

Since 2010, SC DNR has worked with the Coosawhatchie Watershed Partnership and the Catawba Indian Nation to reverse those impacts. The 2015–2024 streambank stabilization, the 2017–2024 native fish restocking — including redbreast sunfish and shoal bass — and the 2020–2024 SC DNR Watershed Restoration Program projects are the major recent outcomes. The river today supports the Ridgeland, Coosawhatchie, and Gillisonville economies and is home to the Coosawhatchie Heritage Preserve and the Blue Heron Nature Center. What began as a trapper's store at a bridge endures as a defining feature of the land it drains — a tributary of the Broad River and a key part of the larger Port Royal Sound watershed.