de-poldering the noordwaard in the dutch delta

1
De-poldering the Noordwaard in the Dutch delta The Noordwaard agricultural polder will be reconnected to the adjacent river, by means of lowering or removing dikes. Controlled flooding will occur in the flow–through area in times of high river water levels. Together with restoring tidal dynamics in the broader estuary, this restores dynamic land and water interactions around and in the Biesbosch wetlands. Hybrid-engineered dike Near the Steurgat Fortress, a willow forest will be laid out in front of a section of the dike. This reduces flood waves and compensates for required dike reinforcements. Flow-through area Inlet High water level DORDRECHT Biesbosch wetlands National Park FIGURES 70km dikes 50km new roads 29 mounds 38 bridges 12 pumping stations 4 million m3 of earth moving WERKENDAM Several homes rebuilt on mounds Flow-through area © Infographic: Loek Weijts Text: Martijn van Staveren

Upload: martijn-van-staveren

Post on 22-Nov-2014

32 views

Category:

Environment


4 download

DESCRIPTION

De-poldering the Noordwaard in the Dutch delta is a project that takes place within the context of the Room for the River programme. In this programme, widening the river bed and reconnecting floodplains stands central in dealing with floods in the Netherlands. It is one of my case studies in my PhD research project.

TRANSCRIPT

Page 1: De-poldering the Noordwaard in the Dutch delta

De-poldering the Noordwaard in the Dutch delta

The Noordwaard agricultural polder will be reconnected to the adjacent river, by means of lowering or removing dikes. Controlled flooding will occur in the flow–through area in times of high river water levels. Together with restoring tidal dynamics in the broader estuary, this restores dynamic land and water interactions around and in the Biesbosch wetlands.

Hybrid-engineered dike Near the Steurgat Fortress, a willow forest will be laid out in front of a section of the dike. This reduces flood waves and compensates for required dike reinforcements.

Flow-through area

Inlet

High water level

DORDRECHT

Biesbosch wetlands National Park

FIGURES 70km dikes 50km new roads 29 mounds 38 bridges 12 pumping stations 4 million m3 of earth moving

WERKENDAM

Several homes rebuilt on mounds

Flow-through area

© Infographic: Loek Weijts Text: Martijn van Staveren