23, August 2022

Observed morphological development of Hondsbossche Dunes 10 years after Svašek’s predictions

Svašek Hydraulics has been involved in the design of the Hondsbossche Dunes, a reinforcement of the Hondsbossche and Pettermer sea defence. As part of the tender team of Van Oord and Boskalis, Svašek has made morphological predictions of the evolution of this large scale nourishment.

Now, several years after the construction of the Hondsbossche Dunes our colleague Anna Kroon has published a paper on the morphological changes that took place since then.


  • Net volume losses from the project area were less than 5% of the initial nourished sand volume after 5 years.
  • The slope of the surfzone is adjusted within two winters to a similar slope as the adjacent coast.
  • The initially wide beaches (i.e., up to 225 m) are reduced to about 100 m-wide, similar to the adjacent coast.
  • The dune volume has increased and the dune foot migrated seaward at the entire nourished site, regardless of whether the subaqueous profile gained or lost sediment.

Download here the full paper Subaqueous and Subaerial Beach Changes after Implementation of a Mega Nourishment in Front of a Sea Dike.

More information?

Please contact Anna Kroon.

Anna Kroon

Project leader


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