IWRA World Water Congress 2008 Montpellier France
1. Water availability, use and management
Author(s): Ermias ALEMU
Florent MARAUX
Sylvain PERRET
L'auteur principal réalise une thèse en Ethiopie; Il est
inscrit à l'école Doctorale SIBAGHE, UMR G-eau; il est accueilli par le CIRAD.
Les deux co-auteurs sont
chercheurs du CIRAD, UMR G Eau
Keyword(s): sustainability, water management, irrigation systems, simulation model
Poster: PDFAbstractIn recent years, Ethiopia expanded irrigation agriculture with the
strategic objective to improve agricultural production, through improved irrigation water use efficiency and
agricultural production efficiency. Irrigation systems are expected not only to provide more agricultural outputs, but
also to be technically and financially sustainable and address waterlogging problems in irrigated areas. The irrigation
area developed up to now forms 6.8% of total irrigation potential area at the country level. Existing schemes show
low productivity and performance because of technical problem, poor management and inadequate maintenance. In
view of this situation, improving the performance of existing schemes should be more viable strategically than
constructing big new schemes, which might well fall onto the same under-performance trap.
The research is
assessing the technical, social, agricultural, water service and economic issues in representative schemes of the
country to develop tool and indicators for optimal use and management, and the monitoring thereof. Primary and
secondary are collected on the constituent of irrigation system, and will be mobilised further into the OLYMPE
model which will allow for scenario-testing. Different scenarios will be formulated to run the simulation model with
typology of farmers existing in the scheme, and ultimately to highlight pathways and best options for sustainable
management.
A continuous assessment of the irrigation and drainage schemes in a synchronised way will enable us
to know whether the targets or objectives of the schemes are fulfilled or not.
After the research work on the
selected irrigation schemes, the sustainability indicators that are going to be identified will be scaled up to the national
irrigation systems.