Water, Land and Ecosystems - Namibia

Review of Methodologies for Land Degradation Neutrality Baselines: Sub-National case studies from Costa Rica and Namibia

Anonymous — Thu, 19 Nov 2020 22:02:41 +0000

Regions

Latin America
Southern Africa

TypeReport

Languageen

Authors

Aynekulu, Ermias
Lohbeck, Madelon
Nijbroek, Ravic P.
Ordoñez, Jenny C.
Turner, Katrine Grace
Vågen, Tor-Gunnar
Winowiecki, Leigh A.

The objective of this report is to identify entry points and challenges for subnational LDN baselines in order to inform subnational planning processes as potential vehicle for the implementation of LDN targets on the ground. For this purpose two focus regions were chosen within two of the countries – namely Namibia and Costa Rica – that participated in the first LDN pilot phase. The focus areas in Namibia and Costa Rica are the regions of Otjozondjupa and Rio Jesus Maria watershed respectively. Both Namibia and Costa Rica provide interesting case studies given the differences in types of land degradation, national capacities, and land resources.

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Citation

Aynekulu E; Lohbeck M; Nijbroek R; Ordóñez JC; Turner KG; Vågen T; Winowiecki L. 2017. Review of methodologies for land degradation neutrality baselines: Sub-national case studies from Costa Rica and Namibia. CIAT Publication No. 441. International Center for Tropical Agriculture (CIAT) and World Agroforestry Center (ICRAF), Nairobi, Kenya. 58 p. Available at: https://hdl.handle.net/10568/80563

Accessibility

Open Access

Research Themes

Enhancing Sustainability Across Agricultural Systems

Permalink

https://hdl.handle.net/10568/80563

Managed aquifer recharge in Africa: taking stock and looking forward

Anonymous — Thu, 19 Nov 2020 22:02:41 +0000

TypeJournal Article

Languageen

Authors

Ebrahim, Girma Yimer
Lautze, Jonathan F.
Villholth, Karen G.

Climatic variability and change result in unreliable and uncertain water availability and contribute to water insecurity in Africa, particularly in arid and semi-arid areas and where water storage infrastructure is limited. Managed aquifer recharge (MAR), which comprises purposeful recharge and storage of surface runoff and treated wastewater in aquifers, serves various purposes, of which a prominent one is to provide a means to mitigate adverse impact of climate variability. Despite clear scope for this technology in Africa, the prevalence and range of MAR experiences in Africa have not been extensively examined. The objective of this article is provide an overview of MAR progress in Africa and to inform the potential for future use of this approach in the continent. Information on MAR from 52 cases in Africa listed in the Global MAR Portal and collated from relevant literature was analyzed. Cases were classified according to 13 key characteristics including objective of the MAR project, technology applied, biophysical conditions, and technical and management challenges. Results of the review indicate that: (i) the extent of MAR practice in Africa is relatively limited, (ii) the main objective of MAR in Africa is to secure and augment water supply and balance variability in supply and demand, (iii) the surface spreading/infiltration method is the most common MAR method, (iv) surface water is the main water source for MAR, and (v) the total annual recharge volume is about 158 Mm3 /year. MAR schemes exist in both urban and rural Africa, which exemplify the advancement of MAR implementation as well as its out scaling potential. Further, MAR schemes are most commonly found in areas of high inter-annual variability in water availability. If properly planned, implemented, managed, maintained and adapted to local conditions, MAR has large potential in securing water and increasing resilience in Africa. Ultimately, realizing the full potential of MAR in Africa will require undertaking hydrogeological and hydrological studies to determine feasibility of MAR, especially in geographic regions of high inter-annual climate variability and growing water demand. This, supported by increased research to gauge success of existing MAR projects and to address challenges, would help with future siting, design and implementation of MAR in Africa.

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Citation

Ebrahim, Girma Y.; Lautze, Jonathan F.; Villholth, Karen G. 2020. Managed aquifer recharge in Africa: taking stock and looking forward. Water, 12(7):1844. (Special issue: Managed Aquifer Recharge for Water Resilience) [doi: 10.3390/w12071844]

Accessibility

Open Access

Research Themes

Variability, Risks and Competing Uses

Permalink

https://hdl.handle.net/10568/108829

Mapping the water situation, monitoring the availability of water and the impact on livelihoods in Seven SADC Countries

Amanda — Tue, 30 Jan 2018 06:32:00 +0000

The proposed Project will undertake mapping and monitoring of the extent of surface water and droughts in the sub region, with particular focus on countries identified to be at highest risk: Lesotho, Madagascar, Malawi, Namibia, Swaziland, Zambia and Zimbabwe.

Contact Person

Mapedza, Everisto <e.mapedza@cgiar.org>

Lead Center

International Water Management Institute (IWMI)

Donors

Food and Agriculture Organization of the United Nations (FAO)

Partners

IWMI - International Water Management Institute

Completed

Start/End dateDecember 01, 2016 — July 31, 2017

Research ThemeVariability, Risks and Competing Uses

Cluster

4.1 Risks associated with water variability mitigated

Countries

Eswatini, Lesotho, Madagascar, Malawi, Namibia, Zambia, Zimbabwe