Typically, Control Surveys are used to establish durable, sustainable reference points to be used as the basis for and throughout a project’s lifecycle and beyond.  A critical aspect of this type of work is developing horizontal and vertical positions of these control points relative to a desired horizontal and/or vertical control datum.  Once the control points have been established, all subsequent survey work adhering to the control survey will be uniform and seamless for further use in engineering, planning, and land development purposes.

In this way, control surveys are a foundational tool for virtually all other types of surveys, including, but certainly not limited to: topographic, right-of-way, aerial mapping, construction layout, boundary surveys, utility mapping, and structural as-built.