Blackwater River

A blackwater river is a river with a deep, slow-moving channel flowing through forested swamps or wetlands.

Blackwater River may also refer to:

Canada

 * West Road River (also Blackwater River), a major tributary of the Fraser River

England

 * Blackwater River (River Axe), a tributary of the River Axe in Devon and Dorset
 * River Blackwater, Essex
 * Blackwater Estuary
 * River Blackwater (River Loddon), a tributary of the Loddon forming boundaries of Hampshire with Surrey and Berkshire
 * River Blackwater (River Test), a tributary of the Test in Wiltshire and Hampshire

Scotland

 * Black Water (Conon), in Wester Ross, Scotland

Ireland

 * Blackwater River, a distributary of the River Shannon
 * Enfield Blackwater, flowing from Staplestown, County Kildare, to the River Boyne in County Meath
 * Kells Blackwater also known as Leinster Blackwater, flowing from Lough Ramor, County Cavan, to Navan, County Meath
 * Kerry Blackwater, a river in County Kerry
 * Kilkenny Blackwater, a tributary of the River Suir in County Kilkenny
 * Munster Blackwater, a river which flows through Counties Kerry, Cork, and Waterford
 * River Blackwater, County Cavan
 * Ulster Blackwater in Counties Armagh, Tyrone and Monaghan

New Zealand

 * Blackwater River (Tasman), a tributary to the Mangles River
 * Blackwater River (Buller River tributary)
 * Blackwater River (Little Grey River tributary)

United States

 * Blackwater River (Alabama), a river in Baldwin County
 * Blackwater River (Florida), a river arising in southern Alabama and flowing through the Florida Panhandle to the Gulf of Mexico
 * Blackwater River (Maine), a river in Aroostook County
 * Blackwater River (Maryland), a largely saltwater river in Dorchester County
 * Little Blackwater River (Maryland), a tributary
 * Blackwater River (Massachusetts–New Hampshire), a tidal inlet in northeastern Massachusetts and southeastern New Hampshire
 * Blackwater River (Missouri), a tributary of the Lamine River
 * Blackwater River (Contoocook River tributary), a river in central New Hampshire
 * Blackwater River (Virginia), a river in southeastern Virginia
 * Blackwater River (West Virginia), a river in the Allegheny Mountains (with a tributary named Little Blackwater River)