Application of the Water Evaluation and Planning (WEAP) Model to Assess Future Water Demands and Resources in the Olifants Catchment, South Africa PDF Download
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Author: Roberto Arranz
Publisher: IWMI
ISBN: 9290906545
Category : Olifants River Watershed (South Africa)
Languages : en
Pages : 104
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Book Description
The Olifants catchment is one of 19 Catchment Management Areas in South Africa. Different water users (i.e., rural, urban, mining, subsistence and commercial irrigated agriculture, commercial forestry, industry and power generation) are present in the catchment. Rising population andincreasing water provision in rural areas, in conjunction with the development of the mining industry, the construction of new power generation plants, the implementation of environmental flows andthe need to meet international flow requirements are going to greatly exacerbate the complexity of future water resources management in what is already a water-stressed catchment. Being able to assess the ability of the catchment to satisfy potential water demands is crucial in order to plan for the future and make wise decisions. In this study, a scenario analysis approach was used in conjunction with the Water Evaluation And Planning model, in order to assess the impacts of possible water demands on the water resources of the Olifants catchment in 2025. Foreach scenario, the water resource implications were compared to a 1995 “baseline.” The model enabled analyses of unmet water demands, streamflows and water storage for each scenario. The model results show that for the different scenarios considered in this study the implementation of the Environmental Reserve (an instream requirement to guarantee the health of the riverine ecosystems) will increase the shortages for other sectors. The construction of the main water storage infrastructure proposed by the Department of Water Affairs and Forestry, in conjunction with the application of Water Conservation and Demand Management practices, can reduce the unmet demands and shortfalls to levels lower than, or similar to, those experienced in the 1995 baseline. However, in all cases these interventions will be insufficient to completely meet the demands of all the sectors. A tight control of the growth in future demands is essential, although this may be difficult in a rapidly developing country like South Africa.
Author: Roberto Arranz
Publisher: IWMI
ISBN: 9290906545
Category : Olifants River Watershed (South Africa)
Languages : en
Pages : 104
Get Book Here
Book Description
The Olifants catchment is one of 19 Catchment Management Areas in South Africa. Different water users (i.e., rural, urban, mining, subsistence and commercial irrigated agriculture, commercial forestry, industry and power generation) are present in the catchment. Rising population andincreasing water provision in rural areas, in conjunction with the development of the mining industry, the construction of new power generation plants, the implementation of environmental flows andthe need to meet international flow requirements are going to greatly exacerbate the complexity of future water resources management in what is already a water-stressed catchment. Being able to assess the ability of the catchment to satisfy potential water demands is crucial in order to plan for the future and make wise decisions. In this study, a scenario analysis approach was used in conjunction with the Water Evaluation And Planning model, in order to assess the impacts of possible water demands on the water resources of the Olifants catchment in 2025. Foreach scenario, the water resource implications were compared to a 1995 “baseline.” The model enabled analyses of unmet water demands, streamflows and water storage for each scenario. The model results show that for the different scenarios considered in this study the implementation of the Environmental Reserve (an instream requirement to guarantee the health of the riverine ecosystems) will increase the shortages for other sectors. The construction of the main water storage infrastructure proposed by the Department of Water Affairs and Forestry, in conjunction with the application of Water Conservation and Demand Management practices, can reduce the unmet demands and shortfalls to levels lower than, or similar to, those experienced in the 1995 baseline. However, in all cases these interventions will be insufficient to completely meet the demands of all the sectors. A tight control of the growth in future demands is essential, although this may be difficult in a rapidly developing country like South Africa.
Author: McCartney, Matthew P., Arranz, Roberto
Publisher: IWMI
ISBN: 9290906723
Category : Olifants River Watershed (South Africa)
Languages : en
Pages : 51
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Book Description
Water resource development has played a significant role in the expansion of agriculture and industry in the Olifants River Catchment. However, currently water deficit is one of the major constraints hampering development in the catchment; both the mining and agricultural sectors are producing below optimal levels because of their reliance on insufficient supplies. In this study, the Water Evaluation and Planning (WEAP) model was used to evaluate scenarios of historic, current and future water demand in the catchment. For each scenario, the WEAP model was used to simulate demand in five different sectors (rural, urban, mining, commercial forestry and irrigation) over a 70-year period of varying rainfall and hydrology. Levels of assured supply were estimated for each sector and the economic cost of failing to provide water was predicted. For the future scenarios, the impact of infrastructure development and water conservation measures were assessed. The study illustrates how a relatively simple model can provide useful insight for resource planning and management.
Author: Matthew P. McCartney
Publisher: IWMI
ISBN: 9290906626
Category : Dams
Languages : en
Pages : 52
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Book Description
Supported by many International agencies.
Author: Kevin Sene
Publisher: Springer Science & Business Media
ISBN: 904813403X
Category : Science
Languages : en
Pages : 356
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Book Description
This book describes recent developments in hydrometeorological forecasting techniques for a range of timescales, from short term to seasonal and longer terms. It conveniently brings together both meteorological and hydrological aspects in a single volume.
Author: François Molle
Publisher: IWMI
ISBN: 9290905247
Category : Water conservation
Languages : en
Pages : 42
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Book Description
The development of societies is shaped to a large extent by their resources base, notably water resources. Access to and control of water depend primarily on the available technology and engineering feats, such as river-diversion structures, canals, dams and dikes. As growing human pressure on water resources brings actual water use closer to potential ceilings, supply-augmentation options get scarcer, and societies, therefore, usually respond by adopting conservation measures and by reallocating water towards more beneficial uses.
Author: Lankford, B. A
Publisher: IWMI
ISBN: 9290906618
Category : Great Ruaha River Watershed (Tanzania)
Languages : en
Pages : 43
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Book Description
Study draws on experiences in the catchment of the Great Ruaha River in Tanzania.
Author: Conor Foley
Publisher: OR Books
ISBN: 168219213X
Category : Social Science
Languages : en
Pages : 191
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Book Description
In October 2018 Brazilians elected Jair Bolsonaro as their new president. A former army officer who served under the military dictatorship, Bolsonaro has spent his political career campaigning against democracy and human rights. His notoriety comes from his repeated racist, sexist and homophobic statements and his defense of torture, extra-judicial executions and impunity for Brazil´s security forces. Bolsonaro is sometimes described as a “Tropical Trump.” But this wording greatly underestimates the threat that he poses to Brazil´s still young and fragile democratic institutions. In Spite of You brings together voices of the new Brazilian resistance. It includes chapters by Dilma Rousseff, former president of Brazil, political prisoner and torture survivor; Fernando Haddad, former minister for education and mayor of São Paulo, who was defeated by Bolsonaro in the 2018 election; and Eugenio Aragão, former minister for justice in President Dilma´s last government. It also gives a voice to feminists, environmentalists, land rights activists and human rights defenders, explaining the background to Bolsonaro´s election and setting out a manifesto for reviving democracy in Brazil. Contributors: Eugenio Aragão, Rubens Casara, Sérgio Costa, Vanessa Maria de Castro, Fabio de Sá e Silva, Michelle Morais de Sá e Silva, Paulo Esteves, Conor Foley, Gláucia Foley, Fernando Haddad, Monica Herz, Fiona Macaulay, Renata Motta, Dilma Rousseff and Márcia Tiburi. Conor Foley is a Visiting Professor at the Pontifical Catholic University of Rio de Janeiro and has worked on legal reform, human rights and protection issues in over thirty conflict zones. His previous books include, Protecting Brazilians Against Torture, Another System Is Possible and The Thin Blue Line.
Author: McCartney M. , Alemayehu T. , Shiferaw A. , Awulachew S.
Publisher: IWMI
ISBN: 9290907215
Category : Tana, Lake (Ethiopia)
Languages : en
Pages : 44
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Book Description
Lake Tana, located in the headwaters of the Blue Nile, is valuable for many people including the communities who live around the lakeshore and those who live immediately downstream. The area has been identified as a region for hydropower and irrigation development, vital for economic growth in Ethiopia. A multidisciplinary study was conducted to assess the possible impacts of this development. This study found that current development has benefited some local people but adversely affected others. Future development will exacerbate pressure on the lake. Hard choices must be made about how the water is best utilized. It is important that all stakeholders, including local people, are involved in the decision-making process.
Author: Graham Smith
Publisher: Cambridge University Press
ISBN: 0521514770
Category : Political Science
Languages : en
Pages : 231
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Book Description
This book examines democratic innovations from around the world, drawing lessons for the future development of both democratic theory and practice.
Author: Meredith Giordano
Publisher: IWA Publishing
ISBN: 1843391120
Category : Science
Languages : en
Pages : 289
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Book Description
This volume is an analytical summary and a critical synthesis of research at the International Water Management Institute over the past decade under its evolving research paradigm known popularly as 'more crop per drop'. The research synthesized here covers the full range of issues falling in the larger canvas of water-food-health-environment interface. Besides its immediate role in sharing knowledge with the research, donor, and policy communities, this volume also has a larger purpose of promoting a new way of looking at the water issues within the broader development context of food, livelihood, health and environmental challenges. More crop per drop: Revisiting a research paradigm contrasts the acquired wisdom and fresh thinking on some of the most challenging water issues of our times. It describes new tools, approaches, and methodologies and also illustrates them with practical application both from a global perspective and within the local and regional contexts of Asia and Africa. Since this volume brings together all major research works of IWMI, including an almost exhaustive list of citations, in one single set of pages, it is very valuable not only as a reference material for researchers and students but also as a policy tool for decision-makers and development agencies.
