Common structural approaches to combat flooding problem includes replacement/upgrading of drains, temporary flood storage with pumping facilities, cross catchment diversion and infiltration. The concept of infiltration involves the reduction of surface runoff so that the amount of overland flow is reduced.
To enhance absorption of runoff into the ground, structures and facilities have to be designed and provided. For instance, porous pavement and infiltration pond could serve as infiltration facilities to cut off some surface runoff.
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This question is taken from book named – A Self Learning Manual – Mastering Different Fields of Civil Engineering Works (VC-Q-A-Method) by Vincent T. H. CHU.
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What is the difference between seepage and permeability? Explain with practical example.