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www.hydrol-earth-syst-sci-discuss.net/4/1947/2007/
doi:10.5194/hessd-4-1947-2007
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HYDROGEIOS: A semi-distributed GIS-based hydrological model for disturbed river basins
1Department of Water Resources and Environment, School of Civil Engineering, National Technical University of Athens, Greece
2Laboratory of Reclamation Works and Water Resources Management, School of Rural and Surveying Engineering, National Technical University of Athens, Greece
Abstract. The HYDROGEIOS modelling framework represents the main processes of the hydrological cycle in heavily disturbed catchments, with decision-depended abstractions and interactions between surface and groundwater flows. A semi-distributed approach and a monthly simulation time step are adopted, which are sufficient for water resources management studies. The modelling philosophy aims to ensure consistency with the physical characteristics of the system, while keeping the number of parameters as low as possible. Therefore, multiple levels of schematisation and parameterisation are adopted, by combining multiple levels of geographical data. To optimally allocate human abstractions from the hydrosystem during a planning horizon or even to mimic the allocation occurred in a past period (e.g. the calibration period), in the absence of measured data, a linear programming problem is formulated and solved within each time step. With this technique the fluxes across the hydrosystem are estimated, and the satisfaction of physical and operational constraints is ensured. The model framework includes a parameter estimation module that involves various goodness-of-fit measures and state-of-the-art evolutionary algorithms for global and multiobjective optimisation. By means of a challenging case study, the paper discusses appropriate modelling strategies which take advantage of the above framework, with the purpose to ensure a robust calibration and reproduce natural and human induced processes in the catchment as faithfully as possible.
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Citation: Efstratiadis, A., Nalbantis, I., Koukouvinos, A., Rozos, E., and Koutsoyiannis, D.: HYDROGEIOS: A semi-distributed GIS-based hydrological model for disturbed river basins, Hydrol. Earth Syst. Sci. Discuss., 4, 1947-1998, doi:10.5194/hessd-4-1947-2007, 2007. Bibtex EndNote Reference Manager XML
