Wind Induced Flow of Water in Network

Abstract

Increased eutrophication of the marshes and lakes in the polder district of Vollenhove in the Netherlands promoted research into the transport of pollutants through the system. The marshes are an important bird sanctuary with unique vegetation. They originate from peat digging and consist of strips of reed lands and peat swamps alternating with shallow strips of water. Occasionally storms have swept away unstable strips of peat, thus forming lakes with a variety in size. The watermark in the region is kept at 0.7 m below sea level by a powerful pumping station that discharges the net drainage into the Ijsselmeer. The area is flat and the lakes are shallow, generally less then 2 m in depth. Therefore, a strong influence of wind upon flow can be expected. Also seiches can occur. Oscillations in waterhead in adjacent lakes connected by canals or conduits will contribute to mixing. The water movement is the subject of this note.