Artificial Recharge to Guide
Category |
Artificial Recharge |
State |
Delhi
|
District |
Central East Nazul Land North North East North West Shahdara South South East South West West |
Block |
Alipur Chanakyapuri Civil Lines Defence Colony Delhi Cantonment Dwarka Gandhi Nagar Hauz Khas Kalkaji Kanjhawala Kapashera Karawal Nagar Karol Bagh Kotwali Mayur Vihar Mehrauli Model Town Najafgarh Narela Nazur Land Patel Nagar Preet Vihar Punjabi Bagh Rajouri Garden Rohini Saket Saraswati Vihar Sarita Vihar Seelampur Seemapuri Shahdara Vasant Vihar Vivek Vihar Yamuna Vihar |
Year of Issue |
2000 |
Number of Authors |
1 |
Name of Authors |
CGWB CHQ Faridabad |
Keywords |
Introduction, Water Resources Development Scenario, Artificial Recharge of Ground Water, Source Water, Planning of Artificial Recharge Schemes, Artificial Recharge Techniques and Designs, Roof Top Rainwater Harvesting, Impact Assessment, Economic Evaluation of Recharge Schemes, Operation and Maintenance. |
File |
Download |
The artificial recharge to ground water aims at augmentation of ground water reservoir by modifying the natural movement of surface water utilizing suitable civil construction techniques. Artificial recharge techniques normally address to following issues - to enhance the sustainable yield in areas where over-development has depleted the aquifer, Conservation and storage of excess surface water for future requirements, since these requirements often changes within a season or a period, to improve the quality of existing ground water through dilution, to remove bacteriological and other impurities from sewage and waste water so that water is suitable for re-use.
Planning of Artificial Recharge Projects- The artificial recharge projects are site specific and even the replication of the techniques from similar areas are to be based on the local hydrogeological and hydrological environments. The first step in planning the project is to demarcate the area of recharge. The Project can be implemented systematically in case a hydrologic unit like watershed is taken for implementation. However, localised schemes are also taken to augment ground water reservoir. The artificial recharge of ground water is normally taken in following areas: areas where ground water levels are declining on regular basis, areas where substantial amount of aquifer has already been desaturated, areas where availability of ground water is inadequate in lean months, areas where salinity ingress is taking place.
Artificial Recharge Techniques and Designs- A wide spectrum of techniques is in vogue to recharge ground water reservoir. Similar to the variations in hydrogeological framework, the artificial recharge techniques too vary widely. The artificial recharge techniques can be broadly categorised as follows: - a. Direct surface techniques Flooding (basins or percolation tanks, stream augmentation, ditch and furrow system, over irrigation); b. Direct sub surface techniques (Injection wells or recharge wells, recharge pits and shafts, dug well recharge, bore hole flooding, natural openings, cavity fillings) c. Combination surface – sub-surface techniques as basin or percolation tanks with pit shaft or wells d. Indirect Techniques (induced recharge from surface water source, Aquifer modification).
Monitoring Mechanism for Artificial Recharge Projects- The monitoring of water levels and water quality is of prime importance in any scheme of artificial recharge of Ground Water. The monitoring data speaks for the efficacy of structures constructed for artificial recharge and greatly helps in taking effective measures for Ground Water Management on scientific lines.
Case Histories of Artificial Recharge In India- The artificial Recharge for augmentation of ground water reservoir and to provide sustainability to ground water development. The schemes for artificial recharge are being implemented in different hydrogeological situations.