*10.2.2.1 Lateral ditch pattern*

The surface runoff water is streamed into a feeder canal/ditch, from which smaller ditches at right angles are formed. The flow rate from feeder cannal to ditiches is monitored by Gate valves .the uniform. The factors such uniform velocity, maximum wetted surface and furrow depth are determined by topography. A return canal transports the excess water, as well as any remaining sediment, back to the main stream.

**Figure 8.** *Percolation tank or basins.*
