Black Hall River is a river in the state of Connecticut, United States of America.[1][2] It joins the Back River at Great Island in Old Lyme, where they enter Long Island Sound.[2] The river is situated near the mouth of the Connecticut River.[3] It has been described as a scenic river that flows through a marshy rural area that has a large presence of wildlife.[4]: 32
The name Black Hall is derived from Black Hole, a cave which housed a black employee of one Matthew Griswold in 1645.[1]
The Blackhall is one of southern New England's recreational flatwater kayaking rivers.[4]