Topographic surveys in Colorado are particularly challenging because of our varied geography. The terms “topographic survey,” “topographical survey” and “topo survey” all mean the same thing. They refer to a type of land survey that measures and communicates both geographical and man-made features on a parcel of land. Colorado topographic surveys document height, width, size and location of features on a property. These features include rivers, mountains, lakes, or existing structures or roads. Topo surveys also document land contours and changes in elevation across the property. Topographical surveys rely on existing records, land surveying onsite and, sometimes, aerial photography. These surveys are primarily used by architects