Rainwater harvesting in India: some critical issues for basin planning and research
AbstractOften, as a frantic response to problems of water scarcity and consequent hardships faced by both urban and communities, India has invested heavily in rainwater harvesting. Unlike investment in large water resource systems, these efforts, by and large, lack hydrological planning and sound economic analysis: research on the impact of local water harvesting/groundwater recharge activities in India is very sparse. This paper identifies sex critical issues in rainwater harvesting efforts in water-scarce regions of India. First: there is no emphasis on potential local supplies and the demand they have to cater for: local supply potential is low in most water scarce regions, a fact compounded by poor reliability, and demand far exceeds the supply potential. Second: there are complexities in the economic evaluation of RWH, due to lack of scientific data on inflows, runoff collection and storage efficiency, beneficiaries, value of the incremental benefits generated and scale considerations. With higher degrees of basin development, the marginal benefit from water harvesting at the basin level reduces, while marginal cost increases. Third: in many basins, there is a strong â€˜trade-offâ€™ between maximizing hydrological benefits and improving cost effectiveness. Fourth: many water-scarce basins are characterized by wide disparity in demand between upper catchments and lower catchments, so that there is a trade-off in maximizing benefits of upstream water harvesting with optimizing basin-wide benefits. Fifth: in many water-scarce basins, local water harvesting merely divides the hydrological benefits rather than augmenting them. Finally, poor integration between surface water and groundwater systems, and lack of inclusion of natural recharge, ultimately leads to reduction in potential for artificial recharge in hard rock areas.
Download InfoIf you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
Bibliographic InfoArticle provided by University of Newcastle upon Tyne, Centre for Land Use and Water Resources Research in its journal Land Use and Water Resources Research.
Volume (Year): 6 (2006)
Issue (Month): ()
Contact details of provider:
Web page: http://www.luwrr.com/
Resource /Energy Economics and Policy;
You can help add them by filling out this form.
CitEc Project, subscribe to its RSS feed for this item.
- Glendenning, C.J. & Vervoort, R.W., 2010. "Hydrological impacts of rainwater harvesting (RWH) in a case study catchment: The Arvari River, Rajasthan, India. Part 1: Field-scale impacts," Agricultural Water Management, Elsevier, vol. 98(2), pages 331-342, December.
- Glendenning, C.J. & Vervoort, R.W., 2011. "Hydrological impacts of rainwater harvesting (RWH) in a case study catchment: The Arvari River, Rajasthan, India: Part 2. Catchment-scale impacts," Agricultural Water Management, Elsevier, vol. 98(4), pages 715-730, February.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (AgEcon Search).
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
If references are entirely missing, you can add them using this form.
If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.
Please note that corrections may take a couple of weeks to filter through the various RePEc services.