Werkendam is a town and a former municipality in southern Netherlands. The municipality, part of Land van Heusden en Altena, contained a la…Werkendam is a town and a former municipality in southern Netherlands. The municipality, part of Land van Heusden en Altena, contained a large part of De Biesbosch area as it is located in the province of North Brabant. On 1 January 2019 it joined Woudrichem and Aalburg in the new municipality of Altena.