Natural Drainage System definition

Natural Drainage System means a drainage system that has not been improved (e.g., channelized or armored). The clearing or dredging of a natural drainage system does not cause the system to be classified as an improved drainage system (Order No. R4-2012-0175).
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Natural Drainage System means the physical beds and boundaries of receiving waters, including those natural drainage systems that have been altered by human actions.
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Natural Drainage System means any unlined or unimproved (not engineered) creek, stream, river, or similar waterway.
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Related to Natural Drainage System

  • Drainage system means one or more artificial ditches, tile drains or similar devices which collect surface runoff or groundwater and convey it to a point of discharge.

  • Sewage system means the entire sewage treatment and subsurface disposal system;

  • Sewerage system means pipelines or conduits, pumping stations, and force mains, and all other

  • Levee system means a flood protection system which consists of a levee, or levees, and associated structures, such as closure and drainage devices, which are constructed and operated in accordance with sound engineering practices.

  • Transportation project or "project" means any or the