Easements shall be provided where required by the Plan Commission, the Board of Public Works, and the utilities for storm and sanitary sewers, gas, water, power, telephone, television cable, and the like. They shall be at least ten feet in width. Where a subdivision is traversed by a watercourse, channel, or stream, an easement shall be provided for an adequate drainage conforming substantially with the lines and area of that watercourse, channel, or stream. The location, width, alignment, and any proposed improvement of the drainageway shall be subject to approval by the Plan Commission and the Board of Public Works. Wherever possible, storm water drainage shall be maintained by landscaped open channel of adequate width and grade to hydraulically achieve maximum potential volumes of flow. Sizes and design details shall be subject to review and approval by the Village Board.
(`99 Code, § 8.08) Penalty, see § 153.99