Willems, D.

estuary water river delta system scheldt dykes process branch change species netherland flood delta works development safety level water management management dutch disaster value rhine rotterdam estuarine situation sea level construction solution industry approach nature salt marshes land reclamation harbour engineering people decision investment measure haringvliet sedimentation agriculture marshes effect result 1953 disaster compartment condition turbidity ecosystem place meuse impact land use engineering works sluice problem rivers rhine university damage influence century connection chapter barrier energy polder production building function storm salt water delta plan reclamation sediment analysis decision-making population increase