Abiaca Creek Sedimentation Study

A numerical sedimentation model study was conducted to determine the effectiveness of the proposed Abiaca Creek sediment reduction scheme under both existing and plan levee conditions. The sediment reduction scheme consisted of controlling the release of sand tailings from gravel mining operations on both Abiaca and Coila Creeks. To perform the analysis, the one-dimensional numerical sedimentation model (TABS-1) was applied with a simulation time of 30 years. The model was not only used to assess the impact of the proposed levee and gravel mining modifications to Abiaca Creek sedimentation, but also to assess change in sand delivery to the Matthews Brake wetlands area under plan conditions.