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Holocene anastomosing fluvial systems have been described from a wide variety of environments, which usually have in common the presence of a rapidly rising base level. Although it has been suggested that this fluvial style can be expected in coastal areas and adjacent inland areas influenced by rapid sea-level rise, few anastomosing fluvial systems from such areas have been reported. The occurrence of alternating meandering and anastomosing fluvial systems in the Holocene Rhine-Meuse Delta (central Netherlands) is discussed here. It is shown that the two fluvial styles not only have distinctive plan morphology but also can be identified on the basis of facies-architectural criteria (width/thickness ratio of channel-belt sand bodies and geometry of overbank deposits). The distribution of channel patterns in the study area is described by means of a simple time-space model. It is argued that the principal …