1. Width Requirements. Easements across lots or centered on rear or side lot lines shall be provided for utilities and shall be not less than five feet in width on each side of all rear lot lines and side lot lines, and side lot lines where necessary for poles, wires, conduits, storm sewer and sanitary sewers, gas, water and heat mains. Easements for sidewalks shall be not less than 10 feet wide; and for trails, a minimum of not less than 16 feet in width will be provided where necessary when located outside the street right-of-way. Greater width easements may be required in some cases.
2. Watercourses or Drainageways. Where a subdivision is traversed by a watercourse, drainage way, channel or stream, there shall be provided a stormwater easement or drainage right-of-way conforming substantially with the lines of such watercourse, and such further width or construction or both as will be adequate for the purpose. Parallel streets or parkways may be required in connection therewith. If it is deemed advisable by the Commission or the City Engineer, such watercourse or drainage way may be reestablished to conform with the proposed street pattern, in which case suitable storm drainage facilities shall be installed as designed and established by a registered professional engineer for the subdivider.