Copenhagen - The Lakes
The lakes inlet is through piped streams (Grøndalsåen, Lygteåen and Ladegårdsåen). These streams jointly provide water from the wet-area Utterslev Mose, the lake Emdrup Sø and to a lesser degree the lake Damhussøen. Ladegårdsåen was converted from an open stream to a piped stream in 1925 and is located below the streets Ågade and Åboulevarden. It provides water for Peblinge Sø and has its endpoint near the pavilion Søpavillonen (English: The Lake Pavilion). From the lakes the water is streamed further on, with an endpoint at the north end of Sortedams Sø, to the lakes in Østre Anlæg, the Fredrikshavn Entrenchment and Øresund. The water has an average time in the lakes of approx. one year.

The water in Utterslev Mose and Emdrup Sø is very high in nutrients. As a result of this, large quantities of algae formed in the lakes and the water became rather unclear as well as hindering animal and plant life. In 1999 the municipality of Copenhagen erected a water treatment plant by Emdrup Sø, to clean the water that was being led to the lakes. This allowed for the re-creation of the water environment. Currently the water is much more clear and animal and plant life are present.
copenhagen nikon cph danmark hdr københavn danimarca d5100