Civil engineering and infrastructure repair in New Orleans after Hurricane Katrina evaluation, design and construction management of levees and floodwalls, special closure structures for protection of the communities adjacent to the Inner Harbor Navigation Canal, major pumping facilities and planning studies for improved levels of flood protection for New Orleans and southern Louisiana.<ref name="Arcadis/Bioengineering Group contract">Infrasite.net @ web.archive.org "</ref> The Delta Works are a series of constructions built between 1953 and 1997 in the southwest of the Netherlands to protect a large area of land around the Rhine-Meuse-Scheldt delta from the sea. The works consist of dams, sluices, locks, levees, and storm surge barriers. The works were initiated after the North
Geography of the European Netherlands (Nieuwerkerk aan den IJssel) , "below" sea level. "highest point on European mainland:" Vaalserberg above sea level. "highest point (including the Caribbean islands):" Mount Scenery on Saba above sea level. Natural resources: natural gas, petroleum, peat, limestone, salt, sand and gravel, arable land Land use: (2011) "arable land:" 25.08% "permanent crops:" 0.88% "other:" 74.04% Irrigated land (2007): Total renewable water resources (2011): Natural hazards: flooding by sea and rivers is a constant danger. The extensive system of dikes, dams, and sand dunes protect nearly one-half of the total area from being flooded during the heavy autumn storms from the north-west.