What do contour lines indicate in site plans?

Contour lines on site plans serve a crucial purpose by representing changes in elevation across the landscape. These lines connect points of equal elevation, allowing one to visualize the slopes, hills, and valleys of the terrain. By analyzing the spacing of the contour lines—closely spaced lines indicate steep terrain, while widely spaced lines suggest gentler slopes—architects and planners can determine how to design structures and manage water drainage appropriately.

Understanding elevation changes is vital for numerous applications, including civil engineering, landscaping, and construction planning. It informs decisions regarding aspects like building foundations, road alignment, and grading, ensuring that projects accommodate the natural topography effectively. Consequently, knowing how to interpret contour lines is fundamental for anyone involved in site planning and development.