Dams are brodely classified into two types: rigid dams and non-rigid dams.
Rigid dams:- these dams construction materials,such as stone or R.C.C or P.C.C. 1.solid gravity dams 2.Aech dams 3.Butrer dams 4.Timer and steel dams.
Non-rigid dams:- these dams have a trapezoidal basic profile.Earth dams and rock fill dams.