Following are the uses of contour maps.
1.The nature of the ground surface or topography of a country weather hilly, undulating ,or flat can be understood.
2. For determining the most economical site for dams, reservoirs, maximum flood line, submerged area.
3. For estimating volume of water to be impounded in a reservoir.
4.For location of highways ,canals, railways, etc.
5. For determining volume of cutting and embankment in given gradient.
6.For determining intervisibility of given points.