It was drained in the 19th century to transform the area into farmland.

It is situated next to a former lake, which was drained in the nineteenth century.

It was constructed on the ancient marshlands which were drained in the 16th century.

Some fens in the area were drained in the 20th century.

Large parts of the wetlands around Nakskov were drained in the 19th century.

Its natural state today would be as marsh land but it was drained in the 19th century to make room for agriculture.

The Oderbruch was partially drained and populated in the 18th century.

It was partially drained in the 18th century, and people started to live in the new area.

When the Fens were drained in the 17th century, the river was no longer tidal.

Most of the swamp was drained in the early 20th century for dairy farming.