Sustainable handling of the river basin/river/floodplainnsystem for the conservation of watern resources in urban areas

This paper focuses an integrated management system of the river basin/river/flood plain complex in urban areas, based on a sustainable handling management concept of urban basins, directed to river ecology aspects, and to a including quantitative-qualitative management of the concepts of “detention” and “retention” at urban building lots scale, as decentralized steps for maintenance and preservation of river basin water quality and river ecosystem. The “detention” concept uses a selective storage technology for surface water volumes by house cisterns to improve the rainwater management deriving from impermeable areas of urban building lots. The “retention” concept uses a controlled reuse technology of surface and subsurface wastewater volumes, derived from domestic sewage treatment with a previous treatment and by using a safe fertirrigation (providing plants with the nutrients they need), under controlling of the infiltration capacity in the permeable areas of urban building lots.