Mitigation of negative ecological and socio-economic impacts of the Diama dam on the Senegal River Delta wetland (Mauritania), using a model based decision support system

Duvail, Stéphanie; Hamerlynck, Olivier

doi:10.5194/hess-7-133-2003

Cited by 42 publications

(24 citation statements)

References 2 publications

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“…Albeit the environmental consequences are an indispensable issue of grave concern encompassing the establishment of cutting edge dams, the communal and health implications specifically expatriation questions are the recent impacts that troubled individuals (AP) are confronted with even before dam construction gets to its finality stage (Duvail & Hamerlynck, 2003;Raschid-Sally, Akoto-Danso, Kalitsi, Ofori & Koranteng, 2008).…”

Section: Background Of the Studymentioning

confidence: 99%

Analyzing the Relevance of VRA Resettlement Trust Fund as a Benefit Sharing Mechanism

Koranteng¹,

Shi²

2018

JSD

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The Volta River Authority Resettlement Trust Fund' (VRA RTF) was established by the Ghanaian Government, with some threshold of assistance from the VRA outfit. More than thirty years after the dam's construction project got its finality, a scheme was subsequently introduced to ensure that earnings emanating from the dam's activities would be of immense relevance to the deranged folks by providing socio-economic amenities like water and sanitation, infrastructural developmental projects among others. However, financing deficiencies appear to be an indispensable and integral setback as far as the pursuance of the Trust's mission is concerned. The study set out to analyze the relevance of VRA RTF as a benefit sharing mechanism in Ghana, specifically, using the employees of VRA RTF in conjunction with the resettlers belonging to Senchi Ferry Township (VRATFCs). Among other objectives, the study determined the distinctive relevance of RTFs to affected individuals, identified the key monetary and non-monetary benefit sharing mechanisms (BSMs) adopted by project developers for displaced individuals, in addition to the critical challenges confronting the smooth functioning of RTFs in Ghana. Both qualitative and quantitative methods of research were adopted for the study. Convenience sampling using questionnaire instrumentation was used to collect data from the staff of VRA RTF and chosen Senchi Ferry Township resettlers. A 5-Point Likert scale which was later fine-tuned into the Relative Importance Index (RII), SPSS Version 22.0 and Microsoft Excel were used for the data analysis. The results indicated the 6 distinctive relevance of RTFs at VRATFCs as water and sanitation, educational enhancement, health improvement, improvement of agricultural projects, community development via socio-cultural activities. To add to this, the 5 key monetary and non-monetary benefit sharing mechanisms as revealed by the participants' were as follows: revenue sharing, development funds, property taxes, equity sharing as well as livelihood and restoration enhancement. More so, with reference to the critical challenges confronting the smooth functioning of RTFs at VRATFCs, 6 bottlenecks realized were as follows: improper costing of relocation packages (ineffective budgeting), inadequate compensation of displaced individuals, inactive involvement of the displaced individuals in the decision making process, insufficient grant allocation to the fund, clarity of rules and policies relating to fund disbursement, vis-à-vis questionable timing of the resettlement processes. It is recommended that the management of VRA RTF, well-informed resettlers and policy-makers at VRATFCs in Ghana and beyond strictly adhere to the establishment of project specific development funds, accountability and transparency regimes, active involvement of resettlers in the decision making process, increment of grant to the RTF, adequate compensation of displaced individuals, effective costing of relocation packages. These strategic initiatives will inadvertently ...

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Section: Background Of the Studymentioning

confidence: 99%

Analyzing the Relevance of VRA Resettlement Trust Fund as a Benefit Sharing Mechanism

Koranteng¹,

Shi²

2018

JSD

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“…In particular, dam construction has altered many wetlands throughout Africa, such as those of the Senegal River Delta in Mauritania (Duvail and Hamerlynck, 2003) and in Senegal (Lamagat et al, 1996;Bader et al, 2003), the Inner Delta of the Niger River in Mali, the Waza Logone in Cameroon (Loth, Published by Copernicus Publications on behalf of the European Geosciences Union.…”

Section: Introductionmentioning

confidence: 99%

Characterizing floods in the poorly gauged wetlands of the Tana River Delta, Kenya, using a water balance model and satellite data

Léauthaud

Belaud

Duvail

et al. 2013

Hydrol. Earth Syst. Sci.

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Abstract. Wetlands, such as those of the Tana River Delta in Kenya, are vital but threatened ecosystems. The flooding characteristics of wetlands largely determine their physical, chemical and biological properties, so their quantification is crucial for wetland management. This quantification can be achieved through hydrological modelling. In addition, the analysis of satellite imagery provides essential hydrological data to monitor floods in poorly gauged zones.The objective of this study was to quantify the main water fluxes and flooding characteristics (extent, duration and number of floods) in the poorly gauged Tana River Delta in East Africa during 2002-2011. To do so, we constructed a lumped hydrological model (the Tana Inundation Model, TIM) that was calibrated and validated with MODIS data. Further analysis of the MYD09A1 500 m composite product provided a map of the empirical probability of flooded state. In non-extreme years and for the current topology of the delta, the flood extent exceeded 300 km 2 . Floods over 200 km 2 occurred on average once a year, with a mean duration of 18 days. River discharge from the upper basin counted for over 95 % of the total water inflow. The results are discussed in the light of possible improvements of the models and wetland management issues.This study provides the first known quantification of spatial and temporal flooding characteristics in the Tana River Delta. As such, it is essential for the water and natural resource management of the Tana River basin. The water balance approach was pertinent to the study of this system, for which information on its internal properties and processes is limited. The methodology, a combination of hydrological modelling and flood mapping using MODIS products, should be applicable to other areas, including those for which data are scarce and cloud cover may be high, and where a medium spatial resolution is required.

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“…And there have been relatively few studies on wetland system, mainly on hydrological impact assessment methods of wetlands (Middleton et al, 2002;Duvail et al, 2003;Acreman et al, 2004Acreman et al, , 2005, and evaluating influence of human activities on wetlands water use (Bennett et al, 1993;Newbold et al, 1997;Roberts et al, 2000;Voogt et al, 2000;Robertson et al, 2002;Mayer et al, 2004). Researches on ecological water requirement started late in China, but rapidly developed in recent years.…”

Section: Introductionmentioning

confidence: 99%

Method for calculating ecological water storage and ecological water requirement of marsh

Liang

et al. 2009

J. Geogr. Sci.

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As one of the most typical wetlands, marsh plays an important role in hydrological and economic aspects, especially in keeping biological diversity. In this study, the definition and connotation of the ecological water storage of marsh is discussed for the first time, and its distinction and relationship with ecological water requirement are also analyzed. Furthermore, the gist and method of calculating ecological water storage and ecological water requirement have been provided, and Momoge wetland has been given as an example of calculation of the two variables. Ecological water use of marsh can be ascertained according to ecological water storage and ecological water requirement. For reasonably spatial and temporal variation of water storage and rational water resources planning, the suitable quantity of water supply to marsh can be calculated according to the hydrological conditions, ecological demand and actual water resources.

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Mitigation of negative ecological and socio-economic impacts of the Diama dam on the Senegal River Delta wetland (Mauritania), using a model based decision support system

Cited by 42 publications

References 2 publications

Analyzing the Relevance of VRA Resettlement Trust Fund as a Benefit Sharing Mechanism

Analyzing the Relevance of VRA Resettlement Trust Fund as a Benefit Sharing Mechanism

Characterizing floods in the poorly gauged wetlands of the Tana River Delta, Kenya, using a water balance model and satellite data

Method for calculating ecological water storage and ecological water requirement of marsh

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