§ Ind. Code § 3-11-1.5-9Visible feature boundaries

If a county executive cannot establish a precinct that complies with section 3 of
this chapter by using the boundaries permitted under section 5 of this chapter, a county
executive may:
(1) establish the precinct by using a boundary following a visible feature, including a
highway, railroad, or stream, and an extension of that visible feature if the extension
does not cross a visible feature or another extension; or
(2) request an exemption under section 20.5 of this chapter.