LEOPOLD II  ., a lake of Central Africa in the basin of the Kasai affluent of the Congo, cut by 2° S. and 18° 1o' E . It has a length N. to S. of about 75 m., is 30 M. across at its northern end, tapering towards its southern end . Numerous bays and gulfs render its outline highly irregular . Its shores are flat and marshy, the lake being (in all probability) simply the lowest part of a vast lake which existed here before the Kasai system breached the barrier—at Kwa mouth—separating it from the Congo . The lake is fed by the Lokoro (about 300 M. long) and smaller streams from the east . Its northern and western affluents are comparatively unimportant . It discharges its waters (at its southern end) into the Mfini, which is in reality the lower course of the Lukenye . The lake is gradually diminishing in area; in the rainy season it overflows its banks . The surrounding country is very flat and densely wooded . See KASAI; and articles and maps in Le Mouvement geog., specially vol. xiv., No . 29 (1897) and vol. xxiv., No . 38 (1907) .