View of the Oostelijk Flevoland flood control project during construction. Queen Beatrix officially opens a dam of the project

Map depicting area of flood control activities in the Southeast part of the Ijsselmeer lake in the Netherlands. Spectators watch as a dredge deposits mud spoils to form storm surge barriers in the lake. Aerial views of the dredging operations. An excursion boat takes passengers near for a closer look at the operations. Passengers seen in various costumes. Tug boats and sail boats near the dredging site. Crowd of workers and spectators stand near and upon the newly dredged mud spoils. View of dredge operator. Several persons cross newly formed bridge between two spoils hills. Aerial views of new storm surge barriers taking form. Numerous working boats, barges and a few pleasure boats seen from the air. Boats tied up at dock next to a dam building. Visitors inside the building looking at lock controls and other items of interest. Decorative murals on the walls. Reporters and photographers on a steel landing above seated group of spectators. Queen Beatrix, of the Netherlands, formally opens the new dam by moving levers forward on stage. View of turbine generator sets rotating and engine tappets moving. Aerial view of the entire storm surge barrier in place around Oostelijk,Flevoland and of new lands under cultivation.