The Lynches River Basin (hydrologic unit 03040202) is located in Lancaster, Chesterfield, Kershaw, Lee, Darlington, Sumter, Florence, and Williamsburg Counties, and encompasses 1,412.3 square miles with geographic regions that extend from the Piedmont to the Sandhills, and to the Upper and Lower Coastal Plains. The Lynches River Basin encompasses 7 watersheds and 903,879 acres, of which 38.5% is agricultural land, 33.4% is forested land, 20.1% is forested wetland (swamp), 5.4% is urban land, 2.0% is scrub/shrub land, 0.3% is water, 0.2% is nonforested wetland (marsh), and 0.1% is barren land. The urban land percentage is comprised chiefly of the City of Lake City.