(A) Under most circumstances, channels designed and constructed in conjunction with new developments will be owned and maintained by the developer, HOA or individual property owner, unless they are within the town right-of-way.
(B) Channel improvements must conform to town design specifications whether or not the facilities are to be dedicated to the town for operation and maintenance.
(C) For constructed channels, the 100-year peak discharge shall be contained in a defined channel cross-section that includes a minimum freeboard per § 152.73(D).
(D) Drainage channels may not be constructed adjacent to roadways or within the town right-of-way without prior written permission from the Public Works Engineer.
(E) Unless flow leaving a site is entering a constructed drainageway, the flow must be returned, as nearly as feasible, to the pre-development condition (i.e. depth, velocity and width).
(F) Constructed channels shall follow the existing watercourse alignment as closely as is feasible.
(G) Where the expected velocity, depth of flow, or channel geometry would result in scour in an earthen channel, an appropriate type of channel stabilization shall be required.
(H) No valves, closures, transformers, standpipes, poles or other obstructions will be permitted in any surface drainage channel or roadside ditch.
(I) Channels shall not be designed with a Froude number greater than 0.86 for 100-year peak flow rates in excess of 50 cfs without special design consideration for the effects of inertial forces, and written approval from the Public Works Engineer.
(Res. 1637, passed 2-28-02)