In-Channel Managed Aquifer Recharge: A Review of Current Development Worldwide and Future Potential in Europe

Standen, Kathleen; Costa, Luís; Monteiro, J. P.

doi:10.3390/w12113099

Cited by 31 publications

(10 citation statements)

References 77 publications

(167 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Rivers in several parts of the world are currently showing and are further projected to show decreased flow under future climate change scenarios [88]. The low flow is projected to drop considerably [89,90], and it may exacerbate freshwater availability problems.…”

Section: Prospectsmentioning

confidence: 99%

Water Storage in Dry Riverbeds of Arid and Semi-Arid Regions: Overview, Challenges, and Prospects of Sand Dam Technology

et al. 2021

View full text Add to dashboard Cite

Augmenting water availability using water-harvesting structures is of importance in arid and semi-arid regions (ASARs). This paper provides an overview and examines challenges and prospects of the sand dam application in dry riverbeds of ASARs. The technology filters and protects water from contamination and evaporation with low to no maintenance cost. Sand dams improve the socio-economy of the community and help to cope with drought and climate change. However, success depends on the site selection, design, and construction. The ideal site for a sand dam is at a transition between mountains and plains, with no bend, intermediate slope, and impermeable riverbed in a catchment with a slope greater than 2°. The spillway dimensioning considers the flow velocity, sediment properties, and storage target, and the construction is in multi-stages. Recently, the failure of several sand dams because of incorrect siting, evaporation loss, and one-stage construction were reported. Revision of practitioners’ manuals by considering catchment scale hydrological and hydrogeological characteristics, spillway height, and sediment transport are recommended. Research shows that protected wells have better water quality than open wells and scoop holes. Therefore, the community should avoid open defecation, pit latrines, tethering of animals, and applying pesticides near the sand dam.

show abstract

Section: Prospectsmentioning

confidence: 99%

Water Storage in Dry Riverbeds of Arid and Semi-Arid Regions: Overview, Challenges, and Prospects of Sand Dam Technology

et al. 2021

View full text Add to dashboard Cite

show abstract

“…TSAs store and attenuate runoff to reduce flooding and erosion during flood events, while slowing down and disconnecting quick flow pathways. They also have potential wider benefits, such as groundwater recharge (Fennell et al, 2022; Standen et al, 2020). Offline ponds (bunds on floodplains) are one example of a TSA type that increases the natural storage needed to manage extreme events at larger scales (Wilkinson et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Mitigating floods and attenuating surface runoff with temporary storage areas in headwaters

et al. 2023

View full text Add to dashboard Cite

Temporary storage areas (TSAs) represent a category of soft-engineered naturebased solutions that can provide dispersed, small-scale storage throughout a catchment. TSAs store and attenuate surface runoff, providing new additional storage during flood events. The need for such additional catchment storage will become more urgent as the frequency and magnitude of extreme hydrological events increases due to climate change. Implementation of TSAs in headwater catchments is slowly gaining momentum, but practitioners still require further evidence on how such measures function during flood events. This review focuses on the role of relatively small-scale (<10,000 m 3 ) TSAs in headwater catchments for flood risk management. It also explores the potential wider benefits for implementing these as part of an integrated catchment management approach. TSA flood mitigation effectiveness is primarily determined by the TSA's available storage prior to the event. At the local scale, this can be represented by the relationship between TSA inputs, outputs and total storage. Factors influencing the local functioning and effectiveness of TSAs are discussed, with potential considerations for optimizing future TSA design and management. Hydrological models have suggested that TSAs could be used to effectively attenuate high magnitude events. However, future considerations should involve addressing the lack of empirical evidence showing TSA catchment scale effectiveness and how local TSA functioning might change in time. Small-scale headwater TSAs offer a holistic and sustainable approach to catchment management that can deliver both local benefits to landowners and wider flood risk mitigation for society.

show abstract

“…Whilst a number of studies have been published on sand dams, many of these are not peer-reviewed. To date, only a cursory review of sand dam knowledge has been published as part of a larger examination of managed aquifer recharge (Standen et al, 2020). As no specific review of sand dams exists, studies are fragmented, findings are difficult to compare, and results are hard to interpret.…”

Section: Introductionmentioning

confidence: 99%

Sand Dams as a Potential Solution to Rural Water Security in Drylands: Existing Research and Future Opportunities

2021

View full text Add to dashboard Cite

Sand dams, a rainwater harvesting technique, are small dams constructed across ephemeral streams. During the rainy season, water is stored in the sand that accumulates behind the dam. Sand dams provide communities in drylands with water during the dry season via scoop holes, pools, and shallow wells. Whilst many studies portray sand dams as a positive solution to the growing threat of dryland water insecurity, others highlight their challenges, including poor water quality, evaporation and leakage from some dams, and the contested failure rate and ability of dams to provide water year-round. This article reviews the peer-reviewed and gray literature on sand dams discovered through Scopus and Google Scholar searches, reference lists, and personal contacts. Findings from the collected literature were reviewed and categorized into sand dam hydrology, health and well-being impacts, economic cost and benefits, and water quality topics. In most numerical simulations, sand dams supply water to the local community throughout much of the dry season and exhibit a long-term positive impact on groundwater. Accounts of water storage and loss based on field measurements, conversely, often show that most water is lost due to evapotranspiration and seepage from the sand reservoir rather than community use. Furthermore, the positive impact on local groundwater storage, while variable, is likely seasonal. Sand dams are relatively affordable to build; construction estimates range from 6,000 to 8,500 EUR. However, existing literature suggests that sand dams are likely not a cost-efficient means of supplying water. Nevertheless, successful sand dams can significantly increase water availability and use, whilst reducing traveling time for water collection, subsequently providing a host of secondary benefits from improved hygiene, economic opportunity, and education. Positive impacts, however, are not equally shared and depend on variables, such as abstraction method, catchment, and household location. Furthermore, their water quality is variable, with high microbiological levels detected especially in scoop holes. Whilst sand dams can increase water security and resilience, they may not be an inclusive solution for all. More research is needed to assess the long-term sustainability of sand dams while accounting for the uncertainty of a changing climate.

show abstract

In-Channel Managed Aquifer Recharge: A Review of Current Development Worldwide and Future Potential in Europe

Cited by 31 publications

References 77 publications

Water Storage in Dry Riverbeds of Arid and Semi-Arid Regions: Overview, Challenges, and Prospects of Sand Dam Technology

Water Storage in Dry Riverbeds of Arid and Semi-Arid Regions: Overview, Challenges, and Prospects of Sand Dam Technology

Mitigating floods and attenuating surface runoff with temporary storage areas in headwaters

Sand Dams as a Potential Solution to Rural Water Security in Drylands: Existing Research and Future Opportunities

Contact Info

Product

Resources

About