The Department shall, at all times, cause suitable and sufficient ditches or other conduits to be constructed along the right-of-way of any road or highway constructed, altered or changed, whereby, because of such construction, alteration or changing of such lands included in the right-of-way of such road or highway, the natural contour lines and levels of the lands included within such right-of-way of such road or highway would be changed, and waters would tend to collect upon and over the lands adjacent to such road or highway because of such change.
Structure Delaware Code