This presentation by ACWADAM explains the occurrence of groundwater and deals with the vertical distribution of groundwater. To begin with, the openings in rocks in the zone of rock fracture such as intergranular openings, vesicles in volcanic rock, joints & fractures and solution cavities are described.
The portion of rock below the zone of rock fracture is very dense and may contain isolated openings. This zone of dense rock generally has no openings that can hold significant quantities of water. The zone of rock fracture shows variable thickness and depends upon type of rock and geological conditions within a single rock type. The zone of aeration and zone of saturation within the zone of rock fracture is described. The forces at work in the zone of aeration - adhesion, cohesion and capillary action are explained.
The presentation also deals with the following -
This presentation is part of the training modules on planning, development and management of groundwater with special reference to watershed management programmes by ACWADAM. Please write to ACWADAM at email@example.com for sourcing these presentations.