NDLI: The role of small scale sand dams in securing water supply under climate change in Ethiopia

Content Provider	Springer Nature Link
Author	Lasage, Ralph Aerts, Jeroen C. J. H. Verburg, Peter H. Sileshi, Alemu Seifu
Copyright Year	2013
Abstract	Community-based water storage in semi arid areas can help to adapt to climate change and mitigate household water shortages. Since little is known on the downstream effects of local water storage, this study employs a water balance model to perform a catchment scale assessment of upscaling local scale water storage in sand dams. The impacts of increasing water storage is evaluated under current climate conditions and future climate change scenarios. Survey information is used to estimate current and future water demand and assess the benefits derived from current sand dams in the Ethiopian study area. Using an indicator of the environmental flow concept, downstream hydrological impacts are simulated for different scenarios. Storage by 613 dams, supplying water to 555,000 people, has no impact on environmental flow downstream of the sand dams. Storage by 2190 dams leads to a modest increase in the number of months with low flow (4 to 9 %). Projected climate change leads to a larger increase in the number of low flow months of 0 to 29 %. Joint climate change and maximum storage scenarios cause an increase in low flow months from 4 to 50 %. Under the most extreme climate change projection 4.5 % of the wet season discharge is stored in sand dams. Because of the local benefits of improved water supply and the acceptable range of downstream impacts, sand dams appear to be a viable way for supplying drinking water in this catchment as well as in other semi-arid regions with similar conditions.
Starting Page	317
Ending Page	339
Page Count	23
File Format	PDF
ISSN	13812386
Journal	Mitigation and Adaptation Strategies for Global Change
Volume Number	20
Issue Number	2
e-ISSN	15731596
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-09-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Water harvesting Adaptation Climate change Catchment model Environmental flow Storage Sand dam Atmospheric Sciences Climate Change Management and Policy Environmental Management
Content Type	Text
Resource Type	Article
Subject	Ecology Global and Planetary Change

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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