  the congaree river is a short but wide river in south carolina in the united states; it flows for only 47 miles (78 km). the river serves an important role as the final outlet channel for the entire lower saluda and lower broad watersheds, before merging with the wateree river just north of lake marion to form the santee river. it is formed in columbia by the confluence of the saluda and broad rivers near the piedmont fall line. it serves as part of the boundary between richland, calhoun, and lexington counties. the only cities near the river are columbia on the east, and cayce and west columbia on the west. despite the vast bottomland swamp below columbia, the congaree is navigable along much of its length at high water by barge traffic, which comes upriver from the port of charleston (approximately 100 miles (167 km) through the santee-cooper lakes to within 5 miles (8 km) of the fall line. the congaree national park, one of the main recreational attractions of the river, is located about halfway down the river's course. the 22,200 acre (90&nbsp;kmÂ²) park contains some of the last remaining old growth bottomland hardwood forest in north america. recreational opportunities include hiking, biking, bird watching, botanical interests, and
Geography_of_Columbia,_South_Carolina Landforms_of_Calhoun_County,_South_Carolina Landforms_of_Lexington_County,_South_Carolina Landforms_of_Richland_County,_South_Carolina Rivers_of_South_Carolina Tributaries_of_the_Santee_River