Irrigation System Structures

Turnouts are constructed in the bed of a canal.

Chutes are used where there are small differences in the elevation of the canal.

Checks are used to lower the water level in the ditch.

A division box is used to divide or direct the flow of water between two or more canals or ditches.

Drop structures allow the water to flow gradually from a higher section of the canal to a lower one.

Distribution control structures are used to carry irrigation water across roads, hillsides, and natural depressions.

A rectangular weir has a triangular notch.

The converging section of a Parshall flume is located at the downstream end.

The cut-throat flume has a constricted or throat section.

The weir can be made of timber, metal, or concrete.

The water depth readings for a Parshall flume are always taken on two scales simultaneously.

The cut-throat flume has a more complex design than the Parshall flume.

Earthen canals require less maintenance compared to lined canals

Lined canals are more cost-effective than earthen canals

Erosion control structures are used to distribute water to different branches of the canal system

Asphaltic concrete is a common material used for lining canals

Water measurement structures are used to regulate the flow of water in canals

Earthen canals do not require any maintenance to prevent weed growth