Seeapge through the dams is the most damaging factor for dams
Flow channel: Space between two consecutive flow lines is called flow path / flow channel
Location of phreatic surface / phreatic line / top flow line
Properties of flownet:
- Each flow path transmits the same quantity of seepage.
- Area bounded by two consecutive flow lines and equipotential lines is a square.
Seepage Control in Dams
Types of Rolled filled dams: