The Bight of Watum is a shipping channel in the Eems estuary between Germany and the Netherlands. The channel runs from the Pier of Oterdum past the Schermdijk (Delfzijl Wind Farm North) in the Oosterhoek/Oosterhorn and further via Delfzijl, Delfzijl-Noord, Naterij, Lutjeburen, Nansum, Klein Wierum, Garbendeweer, Hoogwatum and Nieuwstad along the east side of Eemshaven, to merge with the Oostfriesche Gaatje (East Frisian Hole) there into the Doekegat. The Bight of Watum forms the continuation of the Groote Gat via the Mouth of the Dollard.
The bend is named after the vanished village of Watum, which was near present-day Hoogwatum.
Between the Bight of Watum and the Oostfriesche Gat lie the sandbanks Paap and Hond. To the west lies the sandbank Stern and at the mouth the sandbank Robbenplaat. In front of Hoogwatum lies the Beppegat. Between 1888 and 1945, the Watum Lighthouse stood on the coast between Garbendeweer and Klein Wierum.
Source: Wikipedia