Your search found 20 records
1 McCartney, Matthew P.. 2002. Large dams and integrated water resources management, with reference to the Kafue Hydroelectric Scheme. International Journal on Hydropower and Dams, pp.389-397.
Dams ; Hydroelectric schemes ; Water resource management ; Environmental effects ; Social change ; Water supply ; Fish / Zambia
(Location: IWMI-HQ Call no: IWMI 627.8 G184 MCC Record No: H030685)
Paper presented at Hydro2002 Conference Proceedings, Kiris Turkey 4-7 November 2002..
2 Baril, J.; Bartle A.; Clarke, T.; Gagnon, L.; Guerard, Y.; Klimpt, J. E.; McCartney, Matthew P.; Raschid-Sally, L.; Rotheram, T.; Seelos, K.; Steenbergen, R.; Taylor, R.; Townsend-Hall, B. (Eds..) 2003. The role of hydropower in sustainable development. Sutton, UK: IHA. 162p. (IHA white paper)
Hydroelectric schemes ; Electricity supplies ; Energy ; Water resource management ; Economic aspects ; Costs ; Ecosystems ; Social aspects ; Poverty ; Case studies
(Location: IWMI-HQ Call no: P 6631 Record No: H033421)
http://www.carbosur.com.uy/archivos/Hydropower%20in%20sustainable%20world,%20IHA%20white%20paper,%202003.pdf
https://vlibrary.iwmi.org/pdf/H_33421.pdf
https://vlibrary.iwmi.org/pdf/H_33421.pdf
(5.45 MB)
3 McCartney, Matthew P.; Lankford, B. A.; Mahoo, H. 2007. Agricultural water management in a water stressed catchment: lessons from the RIPARWIN Project. Colombo, Sri Lanka: International Water Management Institute (IWMI). 46p. (IWMI Research Report 116) [doi: https://doi.org/10.3910/2009.116]
River basin management ; Water stress ; Irrigation programs ; Irrigation management ; Irrigation efficiency ; Water use ; Water allocation ; Wetlands ; Water rights ; Water law ; Economic aspects ; Water rates ; User charges ; Water user associations ; Decision support tools / Tanzania / Great Ruaha River / Usangu Plains
(Location: IWMI HQ Call no: IWMI 631.7 G148 MCC Record No: H040549)
http://www.iwmi.cgiar.org/Publications/IWMI_Research_Reports/PDF/Pub116/RR116.pdf
https://vlibrary.iwmi.org/pdf/H040549.pdf
https://vlibrary.iwmi.org/pdf/H040549.pdf
(0.79 MB) (812 KB)
In the face of growing water stress and increasing concerns over the sustainability of water use, Tanzania has, in common with many other countries in Africa, focused largely on the development of more integrated catchment-wide approaches to water management. In the Great Ruaha River Basin, considerable effort has gone into increasing water productivity and the promotion of mechanisms for more efficient allocation of water resources. Over a period of five years, the RIPARWIN project investigated water management in the basin and evaluated the effectiveness of some of the mechanisms that have been introduced. The study findings are relevant to basins in developing countries where there is competition for water and irrigation is one of the main uses.
4 McCartney, Matthew P.; Arranz, Roberto. 2007. Evaluation of historic, current and future water demand in the Olifants River Catchment, South Africa. Colombo, Sri Lanka: International Water Management Institute (IWMI). 42p. (IWMI Research Report 118) [doi: https://doi.org/10.3910/2009.118]
River basins ; Catchment areas ; Water resources development ; Water demand ; Water allocation ; Simulation models ; Calibration ; Water use ; Irrigation water ; Domestic water ; Ecology / South Africa / Olifants River Catchment
(Location: IWMI HQ Call no: IWMI 333.91 G178 MCC Record No: H040648)
(837 KB)
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.
5 McCartney, Matthew P.; Kashaigili, Japhet; Lankford, B. A.; Mahoo, H. F. 2008. Hydrological modelling to assist water management in the Usangu wetlands, Tanzania. International Journal of River Basin Management, 6(1): 51-61.
Water management ; Environmental effects ; Wetlands ; Swamps ; Hydrology ; Simulation models ; Water allocation ; Rivers ; Flow / Tanzania / Great Ruaha River / Usangu Plains / Ihefu Swamp
(Location: IWMI HQ Call no: IWMI 333.91 G148 MCC Record No: H041015)
The Usangu wetlands, containing the Ihefu swamp, are one of the most valuable inland wetlands in Tanzania. Over the last decade, outflow from the swamp has ceased for extended periods in the dry season. This has had severe consequences for downstream ecosystems, including the Ruaha National Park. Results from a simple hydrological model developed for the Ihefu swamp indicate that, between 1958 and 2004, dry season inflows declined by approximately 60% and the dry season area of the swamp decreased by approximately 40% (i.e. from 160 km2 to 93 km2). The model also shows that to maintain minimum downstream environmental flows requires a minimum inflow of 7m3s?1, which is approximately 65% greater than occurs currently. There is significant potential for improving water use efficiency. However, given the socio-economic importance of current levels of water withdrawal, this inflow may be difficult to achieve. Consequently consideration needs to be given to other options, including upstream storage and water management within the wetland itself. This paper highlights that a simple model supplying relatively low- confidence, but indicative, results can provide a useful basis for contemplating water management options.
6 Idowu, O. A.; Lorentz, S. A.; Annandale, J. G.; McCartney, Matthew P.; Jovanovic, N. Z. 2008. Assessment of the impact of irrigation with low-quality mine water on virgin and rehabilitated soils in the Upper Olifants Basin. Mine Water and the Environment, 27: 2-11.
Wastewater irrigation ; Water quality ; Water reuse ; Soil water ; Salinity ; Monitoring ; Models / South Africa / Upper Olifants Basin
(Location: IWMI HQ Call no: IWMI 631.7.5 G178 IDO Record No: H041084)
Low-quality mine water from collieries may be used in large quantities to irrigate agricultural crops on virgin (unmined) and rehabilitated soils in South Africa. Such a use could enhance crop production and allow environmentally sustainable mine water disposal. In this study, the volume and qualities of the runoff from two centre pivots irrigated with moderately saline mine water, as well as their soil water salinities, were monitored and used to determine water and salt balances, using the modified ACRU agrohydrological model, ACRU2000, and its salinity module, ACRUSalinity. At both sites, much of the water evaporated, while a significant part of the salt input either recipitated or remained with the water in the soil horizons. A higher percentage of drainage water (and salinity) were retained as ground water storage and a lower percentage of runoff occurred in the rehabilitated sandy loam soil, while a higher percentage of salts accompanied runoff in the virgin clayey soils. Simulated salt saturation values indicate that many crops could be successfully irrigated at 100% yield potential at either site. Electrical resistivity surveys were carried out at both sites. A general decrease in resistivities with depth in both the virgin and rehabilitated soils reflected the decreasing influence of the mine water used for irrigation with depth and the precipitation of salts in the soils close to the ground surface. The occurrence of a thicker, low- resistivity, near-surface layer near the exit of each pivot area indicates that the water and salt content of the subsurface increased in the direction that the surface and near-surface irrigation water flowed.
7 McCartney, Matthew P.; Shiferaw, A.; Seleshi, Y. 2008. Estimating environmental flow requirements downstream of the Chara Chara weir on the Blue Nile River. In Abtew, W.; Melesse, A. M. (Eds.). Proceedings of the Workshop on Hydrology and Ecology of the Nile River Basin under Extreme Conditions, Addis Ababa, Ethiopia, 16-19 June 2008. Sandy, UT, USA: Aardvark Global Publishing. pp.57-75.
Water management ; River basin management ; Ecology ; Rivers ; Environmental flows ; Environmental effects ; Downstream ; Weirs ; Hydrology ; Models ; Ecosystems ; Water power / Africa / Ethiopia / Sudan / Blue Nile River / Abay River / Chara Chara Weir / Lake Tana
(Location: IWMI HQ Call no: IWMI 577.64 G100 MCC Record No: H041346)
(1.27 MB)
Over the last decade flow in the Abay River (i.e., the Blue Nile) has been modified by operation of the Chara Chara weir and diversions to the Tis Abay hydropower stations, located downstream of the rivers source, Lake Tana. The most conspicuous impact of these human interventions has been significantly reduced flows over the Tis Issat Falls. This paper presents the findings of a hydrological study conducted to estimate environmental flow requirements downstream of the weir. The South African desktop reserve model was used to determine both high and low flow requirements in the reach containing the Falls. The results indicate that to maintain the basic ecological functioning in this reach requires an average annual allocation of 862 Mm3 (i.e. equivalent to 22% of the mean annual flow). Under natural conditions there was considerable seasonal variation, but the absolute minimum mean monthly allocation, even in dry years, should not be less than approximately 10 Mm3 (i.e. 3.7 m3s-1). These estimates make no allowance for maintaining the aesthetic quality of the Falls, which are popular with tourists. The study demonstrated that, in the absence of ecological information, hydrological indices can be used to provide a first estimate of environmental water requirements. However, to ensure proper management, much greater understanding of the relationships between flow and the ecological condition of the riverine ecosystem is needed.
8 McCartney, Matthew P.; Reis, J.; Kibret, S.; Lautze, Jonathan; Culver, T. 2011. Manipulating dam operation for malaria control: an investigation of the Koka dam, Ethiopia. Paper presented at the HYDRO 2011 Conference, Prague, Czech Republic, 17-19 October 2011. 8p.
Dam construction ; Reservoirs ; Waterborne diseases ; Malaria ; Anopheles ; Water levels / Africa / Ethiopia / Koka dam
(Location: IWMI HQ Call no: e-copy only Record No: H044456)
9 McCartney, Matthew P.; Girma, M. M. 2012. Evaluating the downstream implications of planned water resource development in the Ethiopian portion of the Blue Nile River. Water International, 37(4):362-379. (Special issue on "How hydrological models support informed decision making in developing countries" with contributions by IWMI authors). [doi: https://doi.org/10.1080/02508060.2012.706384]
Water resources development ; River basins ; Downstream ; Climate change ; Water power ; Electricity generation ; Irrigation schemes ; Simulation models ; Flow discharge / Ethiopia / Blue Nile River
(Location: IWMI HQ Call no: PER Record No: H044986)
(1.85 MB)
Ethiopia’s policy of large dam construction in the Blue Nile River basin is evaluated by simulating the impact of one downscaled midrange climate change scenario (A1B) on the performance of existing and planned irrigation and hydropower schemes. The simulation finds that by 2100: 1) average basin-wide irrigation demand will increase; 2) annual hydroelectricity generation will be just 60% of potential; and 3) flow at the Ethiopia-Sudan border will be reduced from 1661 m3/s to 1301 m3/s as a consequence of climate change in combination with upstream water resource development. Adaptation to climate change and development must be considered together.
10 Baker, Tracy; McCartney, Matthew P.; Mul, Marloes L. 2014. Concept note on ecosystem services mapping and linkages to models. Project report submitted to IUCN under the project "Water Infrastructure Solutions from Ecosystem Services Underpinning Climate Resilient Policies and Programmes (WISE-UP to Climate)" Gland, Switzerland: International Union for Conservation of Nature (IUCN). 4p.
Ecosystem services ; Mapping ; Models ; Climate change ; River basins / Kenya / Ghana / Tana River Basin / Volta River Basin
(Location: IWMI HQ Call no: e-copy only Record No: H046676)
(0.38 MB)
11 Mul, Marloes L.; McCartney, Matthew P.; Baker, Tracy. 2014. Concept note on instrumented catchments in the Tana and Volta river basin. Project report submitted to IUCN under the project "Water Infrastructure Solutions from Ecosystem Services Underpinning Climate Resilient Policies and Programmes (WISE-UP to Climate)" Gland, Switzerland: International Union for Conservation of Nature (IUCN) 4p.
Catchment areas ; River basins ; Climate change ; Ecosystems / Kenya / Ghana / Tana River Basin / Volta River Basin
(Location: IWMI HQ Call no: e-copy only Record No: H046677)
(0.29 MB)
12 McCartney, Matthew P.; Khaing, O. 2015. A country in rapid transition: can Myanmar achieve food security? In Nagothu, U. S. (Ed.). Food security and development: country case studies. Oxon, UK: Routledge - Earthscan. pp.79-103.
Food security ; Economic development ; Agricultural production ; Rice ; Poverty ; Malnutrition ; Land degradation ; Land reform ; Water availability ; Farmers ; State intervention ; Investment ; Non governmental organizations ; Private sector ; Social aspects ; Rural development ; Infrastructure / Myanmar
(Location: IWMI HQ Call no: 338.19 G000 NAG Record No: H046976)
(2.04 MB)
13 McCartney, Matthew P.; Rebelo, Lisa-Maria; Senaratna Sellamuttu, Sonali. 2015. Wetlands, livelihoods and human health. In Finlayson, C. M.; Horwitz, P.; Weinstein, P. (Eds.). Wetlands and human health. Dordrecht, Netherlands: Springer. pp.123-148.
Wetlands ; Living standards ; Public health ; Drugs ; Ecosystem services ; Rural communities ; Poverty ; Natural resources ; Natural disasters ; Risk reduction ; Floodplains ; Production possibilities ; Financing ; Social participation ; Water supply ; Agriculture ; Institutions
(Location: IWMI Call no: e-copy only Record No: H047154)
(2.00 MB)
In developing countries millions of people live a life of subsistence agriculture, mired in poverty, with limited access to basic human needs, such as food and water. Under such circumstances wetlands, through the provision of a range of direct and indirect ecosystem services, play a vital role in supporting and sustaining peoples’ livelihoods and hence, their health. This chapter discusses the role of wetlands in the context of the sustainable livelihoods framework in which wetlands are viewed as an asset for the rural poor in the form of “natural capital”. The framework is used to illustrate how ecosystem services, livelihoods and health are entwined and how the ecosystem services provided by wetlands can be converted to human health either directly or via other livelihood assets. It highlights the contributions that wetlands make to basic human needs and, either directly or through transformations to other forms of livelihood capital, the support they provide to livelihoods and overall well-being.
14 Finlayson, C. M.; McInnes, R. J.; Noble, I. R.; McCartney, Matthew P.; Lachassagne, P. 2015. How can water have a positive impact on climate change?. Book of Knowledge. Geneva, Switzerland: Danone; Evian; Ramsar: 46p.
Climate change ; Adaptation ; Sustainable development ; Water resources ; Water management ; Freshwater ; Water quality ; Evapotranspiration ; Soil moisture ; Erosion ; Stream flow ; Groundwater extraction ; Aquifers ; Living standards ; Permafrost areas ; Glaciers ; Sedimentation ; Hydrological cycle ; Carbon cycle ; Ecosystems ; Wetlands ; Catchment areas ; Organic matter ; Vegetation
(Location: IWMI HQ Call no: e-copy only Record No: H047348)
(20.29 MB)
15 Reis, J.; Culver, T. B.; Block, P. J.; McCartney, Matthew P.. 2016. Evaluating the impact and uncertainty of reservoir operation for malaria control as the climate changes in Ethiopia. Climatic Change, 136(3):601-614. [doi: https://doi.org/10.1007/s10584-016-1639-8]
Malaria ; Reservoir operation ; Climate change ; Precipitation ; Temperature ; Evaporation ; Water levels ; Water resources ; Energy generation ; Irrigation ; Rainfall-runoff relationships ; Environmental flows / Ethiopia
(Location: IWMI HQ Call no: e-copy only Record No: H047534)
(0.79 MB)
Promising environmental mechanisms to control malaria are presently underutilized. Water level fluctuations to interrupt larval development have recently been studied and proposed as a low-impact malaria intervention in Ethiopia. One impediment to implementing such new environmental policies is the uncertain impact of climate change on water resources, which could upend reservoir operation policies. Here we quantified the potential impact of the malaria management under future climate states. Simulated timeseries were constructed by resampling historical precipitation, temperature, and evaporation data (1994–2002), imposing a 2 °C temperature increase and precipitation changes with a range of ±20 %. Runoff was generated for each climate scenario using the model GR4J. The runoff was used as input into a calibrated HEC ResSim model of reservoir operations. The malaria operation management increased the baseline scenario median energy generation by 18.2 GWh y-1 and decreased the energy generation at the 0.5 percentile (during dry conditions) by 7.3 GWh y-1. In scenarios with -20 % precipitation, malaria control increased average annual energy generation by 1.3 GWh y-1 but only decreased the lowest 0.5 percentile of energy by 0.2 GWh y-1; the irrigation demand was not met on 8.5 more days, on average, per year. Applying the malaria control rule to scenarios with +20 % precipitation decreased the likelihood of flooding by an average of 1.0 day per year. While the malaria control would divert some water away from other reservoir operational goals, the intervention requires 3.3–3.7 % of the annual precipitation budget, which is much less than reduction from potential droughts.
16 Acreman, M.; McCartney, Matthew P.; Overton, I. 2017. Drivers and social context. In Horne, A. C.; Webb, J. A.; Stewardson, M. J.; Richter, B.; Acreman, M. (Eds.). Water for the environment: from policy and science to implementation and management. London, UK: Elsevier. pp.19-35.
Water use ; Water management ; Water policy ; Domestic water ; Environmental management ; Environmental flows ; Development policy ; Policy making ; Ecological factors ; Ecosystem services ; Rivers / Southeast Asia / United Kingdom / India / Australia
(Location: IWMI HQ Call no: e-copy only Record No: H048243)
17 Vollmer, D.; Shaad, K.; Souter, N. J.; Farrell, T.; Dudgeon, D.; Sullivan, C. A.; Fauconnier, I.; MacDonald, G. M.; McCartney, Matthew P.; Power, A. G.; McNally, A.; Andelman, S. J.; Capon, T.; Devineni, N.; Apirumanekul, C.; Nam Ng, C.; Shaw, M. R.; Wang, R. Y.; Lai, C.; Wang, Z.; Regan, H. M. 2018. Integrating the social, hydrological and ecological dimensions of freshwater health: the freshwater health index. Science of the Total Environment, 627:304-313. [doi: https://doi.org/10.1016/j.scitotenv.2018.01.040]
Freshwater ; Water governance ; Stakeholders ; Ecosystem services ; Ecological factors ; Water security ; Water resources ; Water management ; Water demand ; Sustainability ; Environmental health ; Indicators ; River basins / China / Dongjiang River Basin
(Location: IWMI HQ Call no: e-copy only Record No: H048519)
https://ac.els-cdn.com/S0048969718300421/1-s2.0-S0048969718300421-main.pdf?_tid=f9ece1d2-1aa6-11e8-bd92-00000aab0f6c&acdnat=1519616689_e389c8dbeceef2e477e95bff7632ec3f
https://vlibrary.iwmi.org/pdf/H048519.pdf
https://vlibrary.iwmi.org/pdf/H048519.pdf
(1.55 MB)
Degradation of freshwater ecosystems and the services they provide is a primary cause of increasing water insecurity, raising the need for integrated solutions to freshwater management. While methods for characterizing the multi-faceted challenges of managing freshwater ecosystems abound, they tend to emphasize either social or ecological dimensions and fall short of being truly integrative. This paper suggests that management for sustainability of freshwater systems needs to consider the linkages between human water uses, freshwater ecosystems and governance. We present a conceptualization of freshwater resources as part of an integrated social-ecological system and propose a set of corresponding indicators to monitor freshwater ecosystem health and to highlight priorities for management. We demonstrate an application of this new framework —the Freshwater Health Index (FHI) — in the Dongjiang River Basin in southern China, where stakeholders are addressing multiple and conflicting freshwater demands. By combining empirical and modeled datasets with surveys to gauge stakeholders' preferences and elicit expert information about governance mechanisms, the FHI helps stakeholders understand the status of freshwater ecosystems in their basin, how ecosystems are being manipulated to enhance or decrease water-related services, and how well the existing water resource management regime is equipped to govern these dynamics over time. This framework helps to operationalize a truly integrated approach to water resource management by recognizing the interplay between governance, stakeholders, freshwater ecosystems and the services they provide.
18 Lynch, A. J.; Baumgartner, L. J.; Boys, C. A.; Conallin, J.; Cowx, I. G.; Finlayson, C. M.; Franklin, P. A.; Hogan, Z.; Koehn, J. D.; McCartney, Matthew P.; O’Brien, G.; Phouthavong, K.; Silva, L. G. M.; Tob, C. A.; Valbo-Jorgensen, J.; Vu, A. V.; Whiting, L.; Wibowo, A.; Duncan, P. 2019. Speaking the same language: can the Sustainable Development Goals translate the needs of inland fisheries into irrigation decisions? Marine and Freshwater Research, 70(9):1211-1228. [doi: https://doi.org/10.1071/MF19176]
Inland fisheries ; Irrigated farming ; Sustainable Development Goals ; Food security ; Irrigation systems ; Aquatic ecosystems ; Ecosystem services ; Ecological factors ; Social aspects ; Living standards ; Integrated management ; Decision making ; River basins ; Case studies / South East Asia / Australia / Lower Mekong Basin / Murray-Darling Basin
(Location: IWMI HQ Call no: e-copy only Record No: H049308)
(1.36 MB) (1.36 MB)
Irrigated agriculture and inland fisheries both make important contributions to food security, nutrition, livelihoods and wellbeing. Typically, in modern irrigation systems, these components operate independently. Some practices, commonly associated with water use and intensification of crop production can be in direct conflict with and have adverse effects on fisheries. Food security objectives may be compromised if fish are not considered in the design phases of irrigation systems. The 2030 Agenda for Sustainable Development provides a framework that can serve as a backdrop to help integrate both sectors in policy discussions and optimise their contributions to achieving the Sustainable Development Goals (SDGs). Inland fisheries systems do play an important role in supporting many SDG objectives, but these contributions can sometimes be at odds with irrigated agriculture. Using case studies of two globally important river catchments, namely the Lower Mekong and Murray–Darling basins, we highlight the conflicts and opportunities for improved outcomes between irrigated agriculture and inland fisheries. We explore SDG 2 (Zero Hunger) as a path to advance our irrigation systems as a means to benefit both agriculture and inland fisheries, preserving biodiversity and enhancing the economic, environmental and social benefits they both provide to people.
19 McCartney, Matthew P.; Whiting, L.; Makin, Ian; Lankford, B. A.; Ringler, C. 2019. Rethinking irrigation modernisation: realising multiple objectives through the integration of fisheries. Marine and Freshwater Research, 70(9):1201-1210. [doi: https://doi.org/10.1071/MF19161]
Inland fisheries ; Irrigation systems ; Modernization ; Integrated management ; Aquaculture ; Ecosystems ; Sustainable Development Goals ; Sustainable agriculture ; Frameworks ; Trends ; Infrastructure ; Farmers
(Location: IWMI HQ Call no: e-copy only Record No: H049311)
(0.25 MB) (256 KB)
Irrigation has been, and will remain, instrumental in addressing water security (Sustainable Development Goal (SDG) 6), food insecurity (SDG 2) and poverty (SDG 1) goals. However, the global context in which irrigation takes place is changing rapidly. A call for healthier and more sustainable food systems is placing new demands on how irrigation is developed and managed. Growing pressures from competing water uses in the domestic and industrial sectors, as well increasing environmental awareness, mean irrigation is increasingly called on to perform better, delivering acceptable returns on investment and simultaneously improving food security, rural livelihoods and nutrition, as well as supporting environmental conservation. Better integration of fisheries (including aquaculture) in irrigation planning, investment and management can contribute to the modernisation of irrigation and the achievement of the multiple objectives that it is called on to deliver. A framework illustrating how fisheries can be better integrated with irrigation, and how the two can complement each other across a range of scales, from scheme to catchment and, ultimately, national level, is presented.
20 Hurford, A. P.; McCartney, Matthew P.; Harou, J. J.; Dalton, J.; Smith, D. Mark; Odada, E. 2020. Balancing services from built and natural assets via river basin trade-off analysis. Ecosystem Services, 45:101144. [doi: https://doi.org/10.1016/j.ecoser.2020.101144]
Ecosystem services ; River basins ; Environmental flows ; Energy generation ; Hydropower ; Infrastructure ; Reservoirs ; Dams ; Water storage ; Water resources ; Water management ; Flood control ; Floodplains ; Fisheries ; Assets ; Costs ; Decision making ; Models / Kenya / Tana River Basin
(Location: IWMI HQ Call no: e-copy only Record No: H049875)
https://www.sciencedirect.com/science/article/pii/S2212041620300863/pdfft?md5=5b0f3cf063467820e2b7131cbd23bd32&pid=1-s2.0-S2212041620300863-main.pdf
https://vlibrary.iwmi.org/pdf/H049875.pdf
https://vlibrary.iwmi.org/pdf/H049875.pdf
(17.10 MB) (17.1 MB)
Built water infrastructure impacts the balance of services provided by a river and its flow regime. Impacts on both commercial and subsistence activities should be considered in water management decision-making. Various methods used to define mandatory minimum environmental releases do not account for the inherent and often complex trade-offs and synergies which must be considered in selecting a balance of ecosystem and engineered services. This paper demonstrates the value and use of optimised many-objective trade-off analysis for managing resource-systems providing diverse and sometimes competing services. Using Kenya’s Tana River basin as a demonstration it shows controlled releases from multi-reservoir systems can be optimised using multiple performance metrics, representing individual provisioning ecosystem and engineered services at different locations and relating to different time periods. This enables better understanding the interactions between natural and built assets, and selecting river basin interventions that appropriately trade-off their services. Our demonstration shows prioritising Kenya’s statutory minimum environmental ‘reserve’ flows degrades flood-related provisioning services. Low overall flow regime alteration correlates negatively with consistency of hydropower generation, but positively with other provisioning services.
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