What are township lines primarily used for in surveying?

Township lines play a crucial role in land surveying by establishing a grid system for land measurement. This system, known as the rectangular survey system or Public Land Survey System (PLSS), segments the land into squares or townships that are generally six miles by six miles. Each township is further divided into sections, which typically measure one mile by one mile. This structured approach provides a clear and organized way to identify and locate parcels of land, which is essential for various purposes, including land sales, property management, and development planning.

The organization into a grid system allows for accurate descriptions of land locations using a systematic method that can be referenced easily. This is vital in maintaining consistency and preventing disputes over land ownership and boundaries. The system is widely used across many states in the U.S., making it a fundamental part of real estate and land management practices.