Topographical survey helps you to make plans or maps of an area that shows:-
1. The main physical features on the ground, such as river, lakes, reservoirs, roads, forests or large rocks, or the varions features, such as ponds, damn, dives, dranage, ditches or source of water.
2. The different in height between land forms. Such as valley, plains, hills, or slopes, or the difference in height between the features.