Farm tank

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Farm tank

  1. 1. Farm TankWater Harvesting in Rural Areas
  2. 2. Image of Farm Tank
  3. 3. Construction of farm tankSteps are as follows• Digging/Excavating the area which will becollector for water• Spreading a Polythene sheet called Agrifilmover the area• Location should be such that rain water aswell as water from slop also should becollected• It can be also covered to avoid evaporation
  4. 4. ConstructionSelection of site• The site should not be too big or too small• Stony site should be avoided• The soil should be free from salinity oralkalinity• Prefer a area having tree plantation nearby sothat silt deposit will be less in the tank
  5. 5. Construction• The top of the embankment should besufficient enough to have road from both ends• More depth causes more hydrostatic pressureon bottom hence depth of pond should bekept between 3 to 5 meters max• Side slope should be made as per texture ofsoil .
  6. 6. Agrifilm lining• Remove weeds and stones from sides of pond• Make steps in vertical intervals to hold agrifilm• Dig continuous trench on top for anchoringLDPE agrifilm and preventing it sliding down• Spray weedicide on sides to arrest weedgrowth• Avoid excessive straining and tightening offilm
  7. 7. Cross section of farm tank
  8. 8. Advantages• Easy to construct• Cost effective• Less maintenance required• Good for small areas• Sufficient for water needs of a small farm
  9. 9. AssignmentConstruction of a farm tank• Area of around 20,000 sq feet• Materials required• Selection of site area• Cost

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