West Lake is located in the north west region of Hanoi’s old city and just west of the Red River. It is expected to become the centre of the new Hanoi as part of the 2020 development plan. West Lake is believed to be an oxbow lake, with the course of the Red river formerly passing through what is now an isolated fresh water lake with an area of 5.2 km2.

This image shows the changes in the sediments in West Lake over a period of ten days with a fixed inflow boundary of 1.5 cms and a fixed wind speed of 20 m/s.

West Lake has no major inflow other than storm water runoff, sewage, and minor groundwater flow. West Lake has suffered from extensive pollution, including heavy metal contamination of sediments and commercially important organisms.

The purpose of this study is to determine an accurate bathymetry of West Lake and develop a hydrodynamic model for possible future studies of sediment transport and water quality.

This report describesthe methods and results of DSI’s study to determine an accurate bathymetry of West Lake and develop a hydrodynamic model for future studies of sediment transport and water quality of the lake.

These data are made available to assist Vietnamese and International efforts to manage the lake’s future.

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