Keratea storm water drainage

The project involves the design of a new storm water drainage network and stream rehabilitation works for the city of Keratea, aiming to address recurring flood problems within the urban area.

The proposed system covers a total catchment area of 371 hectares, including 209 ha of urban and 162 ha of peri-urban zones, divided into five drainage sub-basins. The study analyzed both the existing and proposed storm water infrastructure, optimizing flows toward the Elaiochori stream and the Amachairi tributary.

The network consists of approximately 7.5 km of new storm water pipelines (diameters DN600–DN1400), prefabricated concrete and HDPE pipes, dozens of inspection and inlet manholes, and localized outlet structures at stream crossings. Hydrological design was performed for 10-year and 50-year return periods, ensuring robust flood resilience in compliance with national hydraulic standards and the EU Floods Directive 2007/60/EC.