Harrestrup àis an approximately 20 km long stream through the western suburbs of Copenhagen, Denmark. It rises at Harrestrup Mose in Vestskoven woodland on the border between Albertslund, Ballerup and Rødovre and flows through Damhus Lake and several parks on its way to the ÃÂresund at Kalvebod Beach in Valby Park.
The stream rises at Mønterne/Herstedhøje just south of Harrestrup Mose and this first, short section is called Rogrøften. Harrestrup Mose is also fed by Ballerup-Skovlunde Skolerende from the north and Bymoserenden from the south.
Harrestrup àthen flows east and is joined by Sømose àfrom the north before passing under the Vestvolden on its way to the Kagsmose bog which is also fed by Kagsmose àfrom the north.
From Kagsmosen, Harrestrup ÃÂ continues south through Krogebjergparken and the Damhus Meadow to the Damhus Lake.
The section from Damhus Lake to the sea is also called DamhusÃÂ¥en. It runs through first the Vigerslev Park and then the Valby Park and follows the boundary between Copenhagen and Hvidovre municipalities.
In 2013, it was decided to invest DKK 450 mio. in restoring the natural environment in the stream. The project is a collaboration between nine municipalities and the HOFOR utility company.