Maintenance of dykes quays

We maintain dykes quays so that they remain strong enough to hold back water. Every six years, we test whether the dykes quays are still strong enough. This allows us to identify in good time which sections need attention.
We are responsible for the 70-kilometer-long sea dyke Lauwersoog and Delfzijl. Behind the coast lie many rivers, lakes, ditches, canals, and waterways. Alongside all that water, there are also 450 kilometers dykes quays. We take care of these together with owners and site managers.

When planning maintenance on our dykes quays, we primarily consider:

  • Water in which boats sail. The flow and waves caused by boats cause wear dykes tear on the dykes quays. 
  • Places where the impact of gas extraction is noticeable. Gas extraction causes the ground to sink. This can have consequences for the height and strength of dykes quays. 
  • Dykes quays where people and animals walk.

Private owners

The water authority not the sole owner of dykes quays. Some parts are privately owned. For example, if someone dyke next to a dyke . Or if there is a stream with a dam in a meadow.

Private owners ensure that there dykes no buildings, fences, loose items, or cars on the dykes . Trees and shrubs dykes not dykes on dykes . Root growth can reduce stability. The water authority expects owners to mow the grass and reseed bare patches. Any wooden or concrete revetment is also maintained by the owner. A revetment ensures that the water's edge does not collapse.

Annual cadet review in March

The water authority whether private individuals are maintaining these dykes quays properly. We do this every year in March with a quay inspection. If a dyke quay has not been properly maintained, we agree that this will be done. We then also arrange a second inspection.

  • The water authority not liable for damage to dykes caused by third parties.
  • If you dyke cracks in the dyke yourself, please contact the water authority.

Major work on sea dykes

Due to climate change and rising sea levels, our sea dykes must sea dykes new standards. Another major sea dyke reinforcement project is sea dyke for the coming years: the reinforcement of the dyke . In addition to reinforcing the dyke, we are also working on an innovative project. We are doing this together with the province of Groningen and it is called: the Double Dyke. In recent years, the dyke has been reinforced. This dyke now dyke the standard again.

  • Reinforcement of the dyke

  • Double Dyke

  • Dike improvement Eemshaven - Delfzijl

Reinforcement of the dyke

Due to climate change and rising sea levels, our sea dykes must sea dykes new standards. That is why the dyke has been reinforced in recent years. This dyke now dyke the standard again. Another major reinforcement of a sea dyke is sea dyke for the coming years: the reinforcement of the dyke .

The Lauwersmeer dike in Groningen is located between Lauwersoog and the Westpolder. This dyke no longer dyke safety requirements. That is why dyke needs to be dyke . This will ensure that we are well protected against flooding in the future.

Lauwersmeerdijk.noorderzijlvest.nl

Double Dyke

We are also working on an innovative project. We are doing this together with the province of Groningen, and it is called: the Double Dyke.

The Double Dyke Hoogwatum behind Bierum consists of a higher dyke the waterfront and a lower dyke . dykes , the two dykes protect us from high water. This second dyke the Bierummer beach is good for our safety, but also for nature, agriculture, and recreation. Between the two dykes an area with ebb and flow. For this purpose, a culvert will be sea dyke in the sea dyke . The silty, salty water from the Eems-Dollard flows in and out of the intermediate area. The silt that flows with the water can settle there. As a result, the low-lying southern part slowly grows along with the rise in sea level. A new area will be created for plants and animals that thrive in brackish water. The northern part will offer space for innovative agriculture. An area dykes between the dykes where we will cultivate shrimp and seaweed. We will also grow plants that are more resistant to salt. Trials are being conducted with certain potato varieties, beans, and grains. Agricultural land is becoming increasingly salty due to the effects of climate change. We are investigating the possibilities when this land is no longer suitable for traditional agriculture.

More information

Dike improvement Eemshaven - Delfzijl

At the end of 2019, the dyke was officially declared 'dyke-safe' and earthquake-proof for the next 25 years. The sea dyke the first in our country to be reinforced in accordance with the latest safety standards and earthquake measures.

Between Eemshaven and Delfzijl lies an 11. sea dyke . This sea dyke no longer sea dyke all the standards. The reason: climate change and gas extraction in Groningen. That is why we have sea dyke and reinforced the sea dyke . 

Dike improvement in 360 degrees

From 2017 to the end of 2019, we worked on the dyke Eemshaven and Delfzijl. We made the dyke , wider, and stronger. At the same time, we carried out a few other special projects for people and nature. In this video, you can experience the dike improvement up close in 360 degrees.