High resolution seismic data collected on four profiles located on the Bengal Fan at 8 N, 11 N, 14 N, and 17 N were analyzed. Numerous channel–levee systems were identified as main architectural elements, all characterized by erosional incision into underlying sediments. On the upper middle fan (17 N), the channel–levee systems are grouped into four complexes. They are separated by regional unconformities, which were partly caused by generation of nonchannelized turbidity currents or switching of the feeding canyon. Succession of the systems and dating of two surface channels (Weber et al., 1997; Weber et al., 2003) indicate activity of the Bengal Fan even during sea-level rises and highstands.