(a) General Requirements. Where a site plan is traversed by a watercourse, drainageway, channel or stream, there shall be provided a storm water easement or drainage right- of-way confirming substantially to the lines of such watercourse, and of such width and construction or both as will be adequate for the purpose. Wherever possible, it is desirable that the drainage be maintained by an open channel with landscaped banks and adequate width reserved for discharge of the base flood.
(b) Drainage Easements. Where topography or other conditions are such as to make impractical the inclusion of drainage facilities within road rights-of-way, perpetual unobstructed easements at least fifteen (15) feet in width for such drainage facilities shall be provided across property outside the road lines and with satisfactory access to the road. Easements shall be indicated on the site plan. Drainage easements shall be carried from the road to a natural watercourse or to other drainage facilities. A ten (10) foot drainage easement for lot drainage shall be required on lot lines (five (5) feet on each side) when not being used as part of the drainage plan improvements.
(1) When a proposed drainage system will carry water across private land outside the Premises, appropriate drainage rights must be secured and indicated on the site-plan.
(2) The Applicant shall dedicate, either in fee or by drainage or conservation easement of land on both sides of existing watercourses, to a distance to be determined by the Planning Commission or Planning Officer, which shall be at a minimum the distance from the top of the slope of the stream bank to the center of the channel.
(3) Low-lying lands along watercourses subject to flooding or overflowing during storm periods, whether or not included in areas for dedication, shall be preserved and retained in their natural state as drainage ways. Such land or lands subject to periodic flooding shall not be computed in determining the average density nor for computing the area requirement of any lot.
(Ord. 2005-10. Passed 1-3-06.)