Developing suitability maps for rainwater harvesting in South Africa

Kahinda, Jean‐Marc Mwenge; Lillie, E.S.B.; Taigbenu, Akpofure E.; Taute, M.; Boroto, R.J.

doi:10.1016/j.pce.2008.06.047

Cited by 156 publications

(109 citation statements)

References 12 publications

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“…Although the results are very similar, Method 2 gives a slightly higher score for the jessour in Sub-catchment 2 (jessour 10-16) and Sub-catchment 3 (jessour [1][2][3][4][5][6][7][8].…”

Section: Comparison Of Methods 1 Andmentioning

confidence: 79%

“…In most previous studies, the number of criteria are limited and are aimed primarily at the selection of suitable locations for RWH [1,14] and do not consider other factors or performance over time. In addition, many of those studies were mainly desktop studies using GIS and RS, without including stakeholders' objectives and constrains.…”

Section: Discussionmentioning

confidence: 99%

“…Critchley and Siegert [20] and Kahinda et al [1] used soil depth as one criterion for selecting potential sites for RWH. Both soil depth and soil texture determine the total soil water storage capacity, which controls the availability of water for crops during the dry periods [9].…”

Section: Soil Depthmentioning

confidence: 99%

“…Aridity and climate change are the major challenges faced by farmers who rely on rainfed farming [1]. Especially in arid regions, farmers are faced with low average annual rainfall and variability in temporal and spatial distribution.…”

Section: Introductionmentioning

confidence: 99%

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A Methodology to Assess and Evaluate Rainwater Harvesting Techniques in (Semi-) Arid Regions

Adham

Riksen

Ouessar

et al. 2016

Water

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Arid and semi-arid regions around the world face water scarcity problems due to lack of precipitation and unpredictable rainfall patterns. For thousands of years, rainwater harvesting (RWH) techniques have been applied to cope with water scarcity. Researchers have used many different methodologies for determining suitable sites and techniques for RWH. However, limited attention has been given to the evaluation of RWH structure performance. The aim of this research was to design a scientifically-based, generally applicable methodology to better evaluate the performance of existing RWH techniques in (semi-) arid regions. The methodology integrates engineering, biophysical and socio-economic criteria using the Analytical Hierarchy Process (AHP) supported by the Geographic Information System (GIS). Jessour/Tabias are the most traditional RWH techniques in the Oum Zessar watershed in south-eastern Tunisia, which were used to test this evaluation tool. Fifty-eight RWH locations (14 jessr and 44 tabia) in three main sub-catchments of the watershed were assessed and evaluated. Based on the criteria selected, more than 95% of the assessed sites received low or moderate suitability scores, with only two sites receiving high suitability scores. This integrated methodology, which is highly flexible, saves time and costs, is easy to adapt to different regions and can support designers and decision makers aiming to improve the performance of existing and new RWH sites.

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“…Although the results are very similar, Method 2 gives a slightly higher score for the jessour in Sub-catchment 2 (jessour 10-16) and Sub-catchment 3 (jessour [1][2][3][4][5][6][7][8].…”

Section: Comparison Of Methods 1 Andmentioning

confidence: 79%

Section: Discussionmentioning

confidence: 99%

Section: Soil Depthmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Methodology to Assess and Evaluate Rainwater Harvesting Techniques in (Semi-) Arid Regions

Adham

Riksen

Ouessar

et al. 2016

Water

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“…In India, potential sites for water harvesting were identified applying the International Mission for Sustainability Developments guidelines within a GIS environment (Kumar et al, 2008;Singh et al, 2009). In South Africa, there are several studies where GIS based decision support systems were developed to locate suitable sites for water harvesting (De Winnaar et al, 2007;Kahinda et al, 2008;Kahinda et al, 2009;Mbilinyi et al, 2005). There are similar examples in other countries where GIS was used to consider stormwater harvesting potential in rural areas (Bakir and Xingnan, 2008;El-Awar et al, 2000;Hamdan et al, 2007;Kirzhner and Kadmon, 2011;Viavattene et al, 2008;Ziadat et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

A GIS based screening tool for locating and ranking of suitable stormwater harvesting sites in urban areas

Inamdar

Cook

Sharma

et al. 2013

Journal of Environmental Management

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There is a need to re-configure current urban water systems to achieve the objective of sustainable water sensitive cities. Stormwater represents a valuable alternative urban water source to reduce pressure on fresh water resources, and to mitigate the environmental impact of urban stormwater runoff. The selection of suitable urban stormwater harvesting sites is generally based on the judgement of water planners, who are faced with the challenge of considering multiple technical and socio-economic factors that influence the site suitability. To address this challenge, the present study developed a robust GIS based screening methodology for identifying potentially suitable stormwater harvesting sites in urban areas as a first pass for subsequent more detailed investigation. The study initially evaluated suitability based on the match between harvestable runoff and demand through a concept of accumulated catchments. Drainage outlets of these accumulated catchments were considered as potential stormwater harvesting sites. These sites were screened and ranked under three screening parameters, namely demand, ratio of runoff to demand, and weighted demand distance. The methodology described in this paper was successfully applied to a case study in Melbourne, Australia, in collaboration with the local water utility. The methodology was effective in supporting the selection of priority sites for stormwater harvesting schemes, as it provided the basis to identify, shortlist, and rank sites for further detailed investigation. The rapid identification of suitable sites for stormwater harvesting can assist planners in prioritising schemes in areas that will have the most impact on reducing potable water demand.

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Road Water Harvesting

Sadeghi

Eslamian

2021

Handbook of Water Harvesting and Conservation

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Developing suitability maps for rainwater harvesting in South Africa

Cited by 156 publications

References 12 publications

A Methodology to Assess and Evaluate Rainwater Harvesting Techniques in (Semi-) Arid Regions

A Methodology to Assess and Evaluate Rainwater Harvesting Techniques in (Semi-) Arid Regions

A GIS based screening tool for locating and ranking of suitable stormwater harvesting sites in urban areas

Road Water Harvesting

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