Welle,

Welle, a great river of Equatorial Africa, rising in the Monbuttu country and keeping a mainly westward course to 19° W., where it turns south-westwards, and as Mobangi or U-bangli enters the Congo. Schweinfurth, its discoverer, thought the Welle or Maku joined the Shari, and so fell into Lake Tsad; Stanley held it to be a tributary of the Congo through the Aruwimi; Grenfell proved its connection with the Congo by the Mobangi.