Category Archives: Inundation

An inundation is an area that can be flooded in case of a siege. The water levels are controlled by a system of locks. To prevent any army to march up towards a strategic position the water level is too deep for normal crossing but to shallow to allow the use of boats.

Defensive Dyke

Description – The defensive dyke connects the fort of Zwijndrecht to the south with fort Fort Saint Mary to the north. It was built to allow the left bank of the river Scheldt to be secured by an inundated area. It is considered to be part of the military road connecting the forts and redoubts of the veiligheidstelling. It features two strong points: the lunet of Halve Maan and the redan of “Put van Fien” and measures approximately 2600m in total length.

Construction & Armament – Construction of the dyke commenced in 1871 together with the military road encircling Antwerp. East of the dyke the area could be flooded when a siege would take place. West the Borgerweertpolder area allowed a defending army to take refuge. It did not see any action in 1914 since the Siege of Antwerp was centered on the right bank of the Scheldt river.

Armament – Based on “Halve Maan” and “Put van Fien”

  • ?x 90mm

Commander 1914 – ?

Current condition – The defensive dyke did not see any action during the Great War. Since no forts north of Fort Haasdonk were built it was argued that the defense of the left bank would be centered on the defensive dyke and nearby forts. When it lost its military role it was kept as a safety barrier in case of floods. In 1953 a flood damaged part of the dyke. In order to close breached dykes near Kallo much of the earth works of Halve Maan were removed. Today it still marks the administrative border between the provinces of Antwerp and Eastern-Flanders.

Sources – Own elaboration; Gils, R.; Van Meirvenne, R.