CSIR (Council of Scientific & Industrial Research) Earth Sciences Applied Geology-Hydrogeology Study Material (Page 3 of 19)

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Movement of Subsurface Water, Zone of Aeration (Vadose Water) , Zone of Saturation (Phreatic Water)

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Movement of Subsurface Water

  • Subsurface water means the flow of water beneath the Earth՚s surface.
  • Principal sources of natural recharge includes precipitation, Stream-flow, lakes and reservoirs, artificial recharge from excess irrigation, seepage from canals & sea water.
  • Water within the ground moves downward through …

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Hydrogeology and Engineering Geology, Porosity, Porosity and Sorting

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Hydrogeology and Engineering Geology

  • It is a measure of the voids/interstices in a rock.
  • It is expressed in percentage.
  • It is the ratio of volume of interstices to the total volume of the soil/rock.
  • The formula for calculating porosity is

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