3.4 Grassed Waterways


A grassed waterway is a vegetated channel that carries runoff at a nonerosive velocity to a stable outlet. Grassed waterways can be enhanced by including filter strips to filter runoff and to trap sediment outside of the waterway. Vegetation in the channel should be lay down to convey water while vegetation in the filter strips should be tall and stiff to avoid submergence and to filter sediment from runoff.

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