A river that is dark in color (due to tannins and other plant decay products) and tend to not carry much sediment; they are characteristic of having shallow banks and slower flowing water than brown water rivers.
The Blackwater River is a 31 mi (50 km) long riverHissom, Patricia. 2006. "Blackwater River." The West Virginia Encyclopedia.
The Blackwater River is a tributary of the Lamine River, about 55 miles (90 km) long, in west-central Missouri in the United States. Via the Lamine and Missouri Rivers, it is part of the watershed of the Mississippi River.
The Blackwater River is a 37.5 mile long (60.40 km) river located in central New Hampshire in the United States. It is a tributary of the Contoocook River, part of the Merrimack River watershed.
The Blackwater River of southeastern Virginia flows from its source near the city of Petersburg, Virginia for about 105 miles (170 km) through the Inner Coastal Plain region of Virginia (part of the Atlantic Coastal Plain). The Blackwater joins the Nottoway River to form the Chowan River, which empties into Albemarle Sound. The Blackwater-Nottoway confluence forms the boundary between Virginia and North Carolina.
The Blackwater River of Florida is a 49-mile (79 km) long river arising in southern Alabama and flowing through the Florida Panhandle to the Gulf of Mexico. The river enters Florida in Okaloosa County and flows through Santa Rosa County to Blackwater Bay, an arm of Pensacola Bay. The river passes through Blackwater River State Park.
The Blackwater River is a 3.1 mile (4.9 km) long tidal inlet in northeastern Massachusetts and southeastern New Hampshire in the United States.