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.
[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.