The river forms the southern border of Kissama National Park and the border of Bengo Province and Cuanza Sul Province.

Its mouth is protected by a long sand spit at the Atlantic Ocean.

[2] A mercenary base was located on the Longa River during the Angola Civil War.

[3] The Chiloglanis sardinhai (a catfish) is known only from the Longa and Caimbambo Rivers.

This article related to a river in Angola is a stub.