narrower concept bank protection Concept channel regulation Concept coast protection Concept coastal land accretion Concept dehydration Concept digging Concept dyke Concept fill Concept flood protection Concept garden design Concept heap re-cultivation Concept horticultural show Concept hydraulic engineering Concept land reclamation Concept park Concept planting Concept protective planting Concept rain retention basin Concept recultivation Concept regulation of creeks Concept river engineering Concept soil protection Concept stabilisation of banks by planting Concept