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Acknowledgements
We are indebted to many individuals for their help and encouragements. As editors, we want to thank above all the contributors, who enthusiastically responded to our invitation to contribute chapters in their fields of expertise.
During the conceptualization of the water resources management theme in the study area, discussions with Zerihun Woldu and Getachew Kassa of Addis Ababa University, Abebe Beyene of Vrije Universiteit Brussel, Wakgari Furi of Oromo Water Works Construction Enterprise, and James McCann of the African Studies Center of Boston University proved most useful. Mulugeta Haileselassie of the Ministry of Water Resources in Addis Ababa and Ephraim Alamerew of the Ethiopian Rainwater Harvesting Association offered unreserved advice, facilitated the selection of some of the contributors, and provided encouragement.
Nigussie Haregeweyn of Mekele University and Mohamed Ali of the Ethiopian Environmental Protection Agency generously provided unpublished information. Richard Carter, Mathew McCartney, and Leif Ohlsson kindly sent us helpful publications, and Linda Vida of the