South Carolina Department of Health and Environmental Control

We promote and protect the health of the public and the environment.

• Frequently Asked Questions
• Watershed Assessments
• Contacts
• Watershed Organizations
• Watershed Resources
• 303(d) &TMDLs
• Water Outreach
• Water Publications
• Low Impact Development
• Calendar of Events

DHEC divides South Carolina into 8 major river basins or watersheds. Together, these watersheds contain over 30,000 stream miles, 300,000 acres of lake water and 200,000  acres of estuary.

For each of the 8 basins, DHEC produces a Watershed Water Quality Assessment (WWQA) that describes a wealth of information through text and maps including: water chemistry, biological monitoring, physical characteristics, natural resources, growth potential, potential nonpoint source contributions and point source discharges.

Click on a watershed to learn more about water quality in that basin.