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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Water resource mangement in Ethiopia : the case of Addis Ababa.

Woldemariam, Berhanu Hailu. January 2009 (has links)
The provision of an improved water supply service to the poor urban areas of Addis Ababa, Ethiopia is essential, given that large numbers of people living in the city have problems of access to a reliable and adequate potable water supply. Only 62% of residents receive an adequate water supply in the City. Clearly, much still needs to be done in this regard. Additionally, water resources need to be managed far more efficiently. This study examines water resource management in Ethiopia using the political ecology framework focusing on issues of equity with regard to access to safe and clean water in the poor areas of the city of Addis Ababa. The key objectives of this study are: to evaluate existing water resource management practices in Ethiopia; assess access to drinking water and; propose sustainable and social justice based management strategies to water resources in Addis Ababa. Qualitative and quantitative research techniques within a purposive sampling methodology are used in this study. The study covers water use and consumption patterns; availability and reliability of water; gender; income; monthly water expenditure and time taken to fetch water from existing sources. The results indicated that more than 37% of the sample households use less than 20 litres per person per day. Most households pay a relatively high price for drinking water with the average cost of ETB 12.87/m3, or 9.19/m3 Rands for water. The majority of households are willing to pay for a new improved water supply. However, the initial connection fee has to be in small instalments linked to their level of income. An innovative financing and cost recovery mechanism is required to increase the coverage of a reliable and safe water supply at an affordable price. / Thesis (M.Sc.)-University of KwaZulu-Natal, Pietermaritzburg, 2009.
2

Trends in climate and urbanization and their impacts on surface water supply in the city of Addis Ababa, Ethiopia

Bisrat Kifle Arsiso 01 1900 (has links)
Understanding climate change and variability at urban scale is essential for water resource management, land use planning, and development of adaption plans. However, there are serious challenges to meet these goals due to unavailability of observed and / or simulated high resolution spatial and temporal climate data. Recent efforts made possible the availability of high resolution climate data from non-hydrostatic regional climate model (RCM) and statistically downscaled General Circulation Models (GCMs). This study investigates trends in climate and urbanization and their impact on surface water supply for the city of Addis Ababa, Ethiopia. The methodology presented in this study focused on the observed and projected NIMRHadGEM2- AO model and Special Report on Emissions Scenarios (SRES) of B2 and A2 of HadCM3 model are also employed for rainfall, maximum temperature and minimum temperature data using for climate analysis. Water Evaluation and Planning (WEAP) modeling system was used for determination of climate and urbanization impacts on water. Land-Sat images were analyzed using Normalized Differencing Vegetation Index (NDVI). Statistical downscaling model (SDSM) was employed to investigate the major changes and intensity of the urban heat island (UHI). The result indicates monthly rainfall anomalies with respect to the baseline mean showing wet anomaly in summer (kiremt) during 2030s and 2050s, and a dry anomaly in the 2080s under A2 and B2 scenarios with exception of a wet anomaly in September over the city. The maximum temperature anomalies under Representative Concentration Pathways (RCPs) also show warming during near, mid and end terms. The mean monthly minimum temperature anomalies under A2 and B2 scenarios are warm but the anomalies are much lower than RCPs. The climate under the RCP 8.5 and high population growth (3.3 %) scenario will lead to the unmet demand of 462.77 million m3 by 2039. Future projection of urban heat island under emission pathway of A2 and B2 scenario shows that, the nocturnal UHI will be intense in winter or dry season episodes in the city. Under A2 scenario the highest urban warming will occur during October to December (2.5 ºC to 3.2 ºC). Under RCP 8.5 scenario the highest urban warming will occur during October to December (0.5 ºC to 1.0 °C) in the 2050s and 2080s. Future management and adaptation strategies are to expand water supply to meet future demand and to implement demand side water management systems of the city and UHI / College of Agriculture and Environmental Sciences / Ph. D. (Environmental Management)

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