Essay On Inundation Irrigation
NAME: MARYAM ADIL
ROLL NO: 8139
INUNDATION IRRIGATION:
Inundation irrigation is the type of direct irrigation which is known as river-canal irrigation. There is no irrigation work among the river to control the water level in the river. There is no construction of hydraulic structures in this system. Canals are excavated from the banks of river by inundation irrigation. In this irrigation system, there is no availability of water throughout the year.
Inundation canals:
Inundation canals are taken from rivers to receive water to the agriculture land only when the water level in the rivers has high potential e.g. floods. Only those flood plains are irrigated by inundated canals where the level of land slopes downward from the river bank. The
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MAINTENANCE OF INUNDANTION CANAL:
There is no construction of silt excluder at the head of canal to prevent the silt deposition due to this every year canal system getting silted. Due to reduction of capacity of canals every year then this irrigation system may fails. So in order to maintain of inundation canal system some measures are taken. (Santosh Kumar Garg , 2009)
1: Subsidiary canals:
These are connect to main canals but there head are kept closed. When the head of main canals become silted and there discharge capacity reduce then in that case the head of subsidiary canals opens which increase the discharge capacity of main canal. These canals are not for irrigation and there length is minimum and taken through uncultivated land. (Shown in fig.) 2: Link canal:
In inundation canal system there is sedimentation problem in order to overcome with this problem link canal is connected with inundated canal. In this the head is kept closed, it opens when the discharge water of main canal decreases. Link canal also known as feader canal. It is shown in
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