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River training works include guide bank systems, groynes or spurs that can be permeable or impermeable, marginal bunds, pitched islands, and bank protection methods. Groynes come in different types based on their material, function like attracting or deflecting sediment, and special designs like hockey-style groynes. Marginal bunds, pitched islands, and bank protection are also river training techniques used to store water in reservoirs and reduce sedimentation.Read less