干旱区生态环境知识资源中心(Arid): Managed Aquifer Recharge at a Farm Level: Evaluating the Performance of Direct Well Recharge Structures

Arid

DOI	10.3390/w12041069
	Managed Aquifer Recharge at a Farm Level: Evaluating the Performance of Direct Well Recharge Structures
	Soni, Prahlad; Dashora, Yogita; Maheshwari, Basant; Dillon, Peter; Singh, Pradeep; Kumar, Anupama
通讯作者	Maheshwari, B
来源期刊	WATER
EISSN	2073-4441
出版年	2020
卷号	12 期号:4
英文摘要	A field study evaluated the performance of direct well recharge structures (DWRS) in order to harvest and filter farm runoff and its discharge into open dug wells to augment groundwater recharge. This was undertaken between 2016 and 2018 using a total of 11 wells in the Dharta watershed, situated in a semi-arid hardrock region of Udaipur district, Rajasthan, India. The depth to water level in each DWRS well was monitored weekly for 1 to 3 years before and after the DWRS was established, and water samples were taken for water quality analysis (pH, electrical conductivity (EC), total dissolved solids (TDS), turbidity, fluoride, and Escherichia coli) before and during the monsoon period. For each DWRS well, two control wells in close proximity were also monitored and sampled. Five of the DWRS established in 2018 also had flow meters installed in order to measure discharge from the filter to the well. The volume of water recharged through DWRS into individual wells during the 2018 monsoon ranged from 2 to 176 m(3) per well. Although the mean rise in water levels over the monsoon was higher in DWRS wells than in nearby control wells, the difference was not significant. Values of pH, EC, TDS, and F decreased in DWRS and control wells as each monsoon progressed, whereas the turbidity of wells with DWRS increased slightly. There was no significant difference between DWRS and control wells for pH, EC/TDS, turbidity, or fluoride. The presence of E. coli in DWRS wells was higher than in control wells, however, E. coli exceeded drinking water guidelines in all sampled wells. On the basis of this study, it is recommended that rural runoff should not be admitted to wells that are used for, or close to, wells used for drinking water supplies, even though salinity and fluoride concentrations may be reduced. For this study, none of the 11 DWRS wells produced sufficient additional recharge to potentially increase dry season irrigation supplies to justify expenditure on DWRS. This even applies to the DWRS well adjacent to a small ephemeral stream that had a significantly larger catchment area than those drawing on farmers' fields alone. An important and unexpected finding of this study was that no sampled open dug well met drinking water standards. This has led to a shift in local priorities to implement well-head water quality protection measures for wells used for drinking water supplies. It is recommended that parapet walls be built around the perimeter of such dug wells, as well as having covers be installed.
英文关键词	groundwater recharge water quality water level monitoring recharge performance rainwater harvesting India
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000539527500146
WOS关键词	RAJASTHAN ; SCALE ; INDIA
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
来源机构	Commonwealth Scientific and Industrial Research Organisation
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324719
作者单位	[Soni, Prahlad; Dashora, Yogita] Vidya Bhawan Krishi Vigyan Kendra, Udaipur 313001, Rajasthan, India; [Maheshwari, Basant] Western Sydney Univ, Locked Bag 1797, Penrith, NSW 2767, Australia; [Dillon, Peter; Kumar, Anupama] CSIRO Land & Water, Waite Labs, Waite Rd, Urrbrae, SA 5064, Australia; [Dillon, Peter] Flinders Univ S Australia, Natl Ctr Groundwater Res & Training NCGRT, Adelaide, SA 5001, Australia; [Dillon, Peter] Flinders Univ S Australia, Coll Sci & Engn, Adelaide, SA 5001, Australia; [Singh, Pradeep] Maharana Pratap Univ Agr & Technol, Udaipur 313001, Rajasthan, India
推荐引用方式 GB/T 7714	Soni, Prahlad,Dashora, Yogita,Maheshwari, Basant,et al. Managed Aquifer Recharge at a Farm Level: Evaluating the Performance of Direct Well Recharge Structures[J]. Commonwealth Scientific and Industrial Research Organisation,2020,12(4).
APA	Soni, Prahlad,Dashora, Yogita,Maheshwari, Basant,Dillon, Peter,Singh, Pradeep,&Kumar, Anupama.(2020).Managed Aquifer Recharge at a Farm Level: Evaluating the Performance of Direct Well Recharge Structures.WATER,12(4).
MLA	Soni, Prahlad,et al."Managed Aquifer Recharge at a Farm Level: Evaluating the Performance of Direct Well Recharge Structures".WATER 12.4(2020).