What is the rectangular survey system used for?

The rectangular survey system, also known as the Public Land Survey System (PLSS), is primarily designed for the legal description of land in the United States. This system divides land into a grid of townships and sections, providing a uniform method for describing and identifying parcels of land. Each township is typically six miles by six miles and is further subdivided into sections of one square mile each, allowing for precise legal descriptions that can be referenced in deeds, title documents, and other legal paperwork. This structured approach streamlines the process of identifying land boundaries and ownership, making it essential for real estate transactions, mapping, and land use planning.

While other choices may have some relevance in specific contexts, they do not accurately represent the primary function of the rectangular survey system. Identification of natural resources, tax assessment purposes, and residential zoning rely on various forms of land analysis and legal frameworks, but they are not the main intent of the rectangular survey system itself. Its key objective is to establish a clear and consistent framework for land ownership and transfer through legal descriptions.