Artificial groundwater recharging techniques
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Transcript of Artificial groundwater recharging techniques
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Artificial Groundwater Recharging Techniques
BySaisrinivas GorugantulaPraneeth Chiravuri
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What is groundwater recharging? It is hydrological process where water moves downward from the
surface water to groundwater. Recharge is the primary method that water enters an aquifer.
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Location ofsites for artificial recharge
• (1) Water (availability, source, turbidity, quality, etc . )• (2) surface soils• (3) depth to aquifer• (4) geologic structure and capacity of the ground-water reservoir• (5) the presence of aquicludes• (6) movement of ground water• (7) location of withdrawal area
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Basin Spreading Recharge A series of small basins for impounding water throughout the
intake area.
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Ditch and furrows a series of shallow, flat-bottomed furrows or ditches, closely spaced,
and on a low grade, to spread water throughout the intake area.
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• Recharge wells are of two typesa)Injection well, where water is pumped in for recharge andb)Recharge wells where water flows under gravity.
Recharge wells
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Injection well
• One effective system for recharge consists of drilling injection wells into the aquifer downstream from a dam. Water is then conducted from the principal spillway to the wells.
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Recharge well
• In some cases, wells that normally are pumped during the growing season are used for recharge during other seasons.
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RTRWH in Shram Shakti Bhawan, New Delhi
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Benefits of Artificial RechargeSchemes
To maximize storage(long-term & seasonal) Water quality improvement through dilution Preventing saline-water intrusion & land subsidence Reducing reduction volumes from river f low Controlling effects of climate change Maintaining declining ground water levels
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Thank you