The preparation of studies in the context of this call is necessary for the examination of hydrology, the mapping of the current situation and the demarcation of streams within areas belonging to the designated High Flood Risk Zones for the Attica Water DistrictThe studies are compatible with the corresponding national and regional strategy and planning as reflected in the Report on the 1st Review of the Preliminary Flood Risk Assessment for the entire Greek territory in accordance with Directive 200760EC and in application of Joint Ministerial Decision HΠ 318221542Ε1032010 (Government Gazette ΑΔΑ Ω2Γ57Λ72ΔΩ) European Union European Regional Development Fund ERDF AA NSRF 552010 Page 4 1108Β21072010 as amended and in force as well as the Approved River Flood Risk Management Plan of the Attica Water District EL 06 and the corresponding Strategic Environmental Impact Assessment Approval Decision of the Ministry of Environment, Energy and Climate Change 41369 327 29062018 Government Gazette 2693B06072018