D. On each lot, the rights-of-way and easement areas reserved by Declarant or dedicated to public utilities purposes shall be maintained continuously by the lot owner but no structures, plantings or other material shall be placed or permitted to remain or other activities undertaken which may damage or interfere with the installation or maintenance of utilities, which may change the direction of flow of drainage channels in the easements, which may obstruct or retard the flow of water through drainage channels in the easements, or which damage or interfere with established slope ratios or create erosion or sliding problems, provided, however that where the existing location of a drainage channel would hinder the orderly development of a lot the drainage channel may be relocated as shown on the recorded plat by drainage arrows, provided such relocation does not cause an encroachment on any other lot in the Section or Subdivision. Improvements within such areas shall also be maintained by the respective lot owner except for those for which a public authority or utility company is responsible.