Leveling is the process of determining the elevation of points on, above or below the surface of the earth. Many different types of surveys can be used depending on the desired results. Differential and profile leveling are two surveying methods that are very useful for agricultural and horticultural projects. They are both useful for planning and layout of projects. For planning purposes they are used to provide the information needed to develop the maps, charts, and drawings necessary to lay out buildings, roads, drains, etc. They can also be used for layout. Layout is used to establish the boundaries, lines, and elevation for the construction of those structures. Differential and profile leveling rank next to the measurement of distance in importance as a surveying technique. The following chapter will discuss the terms, equipment, and procedures for two types of leveling.

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