In the village of Streefkerk in the province of South Holland, an extra-wide dike is being built that is so ‘climate-resistant’ that it is expected to be effective for at least 100 years. The Climate Dike is part of the dike improvements being implemented between Kinderdijk and Schoonhovenseveer (Lek Dike KIS).
The Lek Dike between Kinderdijk and Schoonhovenseveer is insufficiently stable, and in some places it is not high enough to provide protection in the future for the people living behind it. The Rivierenland Water Authority is therefore reinforcing an 11 km stretch of the dike.
The dike in the village of Streefkerk had already been reinforced in the 1980s, but this led to damage to nearby properties. The Water Authority sought a solution that would provide longer term safety, respect the history of the village and include space for the construction of new houses. The result is a Climate Dike, which is much stronger and offers protection for the next 100 years. The new dike will be built behind the current dike, creating a combined width of 40 metres.
The reinforcement of the Lek Dike KIS impacted the area extensively in a variety of ways. Over 50 houses were demolished and two houses between Streefkerk and Nieuw-Lekkerland were jacked up. This involved the construction of an extra-strong foundation similar to those in new dike houses, with steel tube piles driven into the ground and a concrete plate on top that can easily be jacked up. The latter is especially useful if the dike is to be reinforced again in the future.
In Nieuw-Lekkerland, a drill pile wall will be built instead of a traditional dam wall. This will cause fewer vibrations, which will result in far less damage to nearby homes.
Near Streefkerk, the Flood Protection Programme is building an extra-wide Climate Dike that will guarantee the residents protection against flooding for 100 years while respecting the history of the village and offering space for new homes.