The Dagebüll area used to be a tiny Hallig island , in 1626 it measured about 450 hectacres . In the 16th and 17th century , several futile attempts were made to secure the area with dikes . It was impossible though to shut off all tidal creeks at once . At the Burchardi flood of 1634 , Dagebüll suffered from a great loss of land
Burchardi flood
Burchardi flood
Dagebüll