A. A map line that was intended to follow a topographical feature but does not do so. Topographical features include the tops and bottoms of hillsides, the banks of water bodies, and center lines of creeks and drainage ditches.

B. The line on the map does not match the legal description or map shown or references in the ordinance which applied the designation.

C. There is a discrepancy between maps and there is a clear legislative intent for where the line should be.

D. It can be clearly shown that a map line is based on the location of a reference item that has since been moved. Reference items are rights-of-way, tentative rights-of-way, utility easements and similar type items. Map line changes in these cases must not be more than a trivial change to the map pattern and must not result in any significant impacts to abutting lots.