Iowa Code § 355.12 : LOCAL GOVERNMENT — COUNTIES — Standards for land surveying —GENERAL PROVISIONS — Indexing of survey documents by recorder TEXT PDF The recorder shall index survey documents and United States public land corner certificates by township, range, and section number. If the survey is in a recorded subdivision, the recorder shall also index the document alphabetically by subdivision name. Iowa Code § 355.12 90 Acts, ch 1236, §12C91, § 114A.12 C93, § 355.12