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mah-spotimage_small.jpg (25966 bytes) The Mahakam delta exhibits a symmetrical fan-shaped morphology typical of fluvial-dominated deltas accumulating in shallow water. The delta plain is densely vegetated and incised by fluvial distributaries and tidal channels. The fluvial distributaries are rectilinear and bifurcate seaward from the Mahakam river. They are groped into a northern system and a southern distributary system while the central part of the delta forms a tide-dominant interdistributary zone characterized by sinuous, esturarine-like tidal channels (Allen & Mercier, 1994)

The general morphology of the delta can be divided into three radially concentric systems: the delta plain, delta front, and prodelta.