What is Water Logging ?
Effects of water logging :
1. Creation of anaerobic conditions near the root zone :
2. Normal cultivation operations such as tilting, ploughing cannot be easily carried out.
3. Water logging leads to salinity
Also Read : Bearing Capacity of Soil and Its Importance
Causes of water logging.
Over and intensive irrigation.
Improper drainage of the surface runoff which results in rise in water table by percolation.
Infiltration of water into soil from nearby rivers.
Nature or subsoil which may not allow free and easy flow of subsoil water.
Seepage of water from canals.
Submergence of the area by floods.
Excess of rainfall.
Irregular or flat ground profile.
Bad effect on community health due to damp climate and breeding conditions for mosquitoes.
Methods to control water logging.
1. Adequate surface drainage :
2. Efficient under-drain :
3. Controlling loss of water by seepage from the canals :
4. Increasing the outflow and preventing the inflow :
5. Changing the system of irrigation :
If the system of irrigation is not proper for the given area then it is very much important to change the irrigation system as per the conditions
6. Pumping out surplus water :
To prevent the water logging of land it is very much important to pump out the excess of surplus water from time to time to maintain the fertility and productivity of the land.
7. Prevention of seepage from reservoir :
Reservoir’s should be properly maintained to prevent the seepage of water from the reservoir.
8. Lining of field channels :
Proper lining of canals and channels should be done. If the channel is made proper watertight by providing lining then seepage loss can be reduced upto quiet extent.
Also Read : Footing design considerations