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Watersheds

Water Quality Information

Clickable Map
Salkehatchie River Basin Clickable Map Salkehatchie River Coosaw River/Ashepoo River/St. Helena Sound Coastal Frontage Broad River / Beaufort River / Port Royal Sound
Frequently Asked Questions


The Department’s Salkehatchie River Basin is subdivided into 18 watersheds or hydrologic units within South Carolina, which include the Salkehatchie River Basin, the Coosaw River/Ashepoo River/St. Helena Sound Basin, the Broad River/Beaufort River/Port Royal Sound Basin, and the Salkehatchie Coastal Frontage Basin. The Salkehatchie River Basin is subdivided into 6 watersheds and includes the Salkehatchie River, Whippy Swamp, Lemon Creek, and the Little Salkehatchie River. The Coosaw River/Ashepoo River/St. Helena Sound Basin is subdivided into 5 watersheds and includes the Combahee River, Great Swamp, Horseshoe Creek, Ashepoo River, Coosaw River, and St. Helena Sound. The Broad River/Beaufort River/Port Royal Sound Basin is subdivided into 6 watersheds and includes Black Creek, the Coosawhatchie River, Cypress Creek, the Beaufort River, the Broad River, and Port Royal Sound. The Salkehatchie Coastal Frontage Basin is contained in a watershed and includes Trenchards Inlet, Fripp Inlet, and the Harbor River.

Watershed Water Quality Assessment (WWQA). 

WWQA document describes a wealth of information about the basins, including: water chemistry information, biological monitoring information, physical characteristics, natural resources, growth potential, potential nonpoint source contributions, and point source discharges. This information is presented through text and maps in these documents.  Download the Complete Basin Publication adobe pdf icon here.

Archived Watershed Water Quality Assessments (1993, 1997)

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