The damming of the estuaries Brielse Maas, Haringvliet and Grevelingen in the SW Netherlands, distributaries of the rivers Rhine and Meuse, caused large-scale morphodynamic changes in their respective ebb-tidal deltas that continue until today. The strong reduction of the cross-shore tidal flow triggered erosion of the ebb-delta front, the building of a coast-parallel, linear intertidal sand bar at the seaward edge of the delta platform, levelling of bars and infilling of the tidal channels.

The stepwise extension of the port of Rotterdam north of the Haringvliet ebb-tidal delta increasingly sheltered this area from the impact of waves and caused a large supply of sand. This finally led to breaching and erosion of the shore-parallel bar. Moreover, large-scale sedimentation reduced the average depth in this area. The Grevelingen ebb-tidal delta has a more exposed position and a smaller sediment supply and has not reached the stage of bar breaching yet.

The observed development of the ebb-tidal deltas caused by blocking of the tidal flow in the associated estuary or tidal inlet is summarized in a three-stage conceptual model. This model can help to assess the impact of interventions in estuaries and tidal inlets, for instance to mitigate the impacts of sea-level rise.

荷兰西南部河口Brielse Maas，Haringvliet和Grevelingen的坝，莱茵河和默兹河的分支，导致各自的潮汐三角洲大规模形态动力学变化，这种变化一直持续到今天。跨岸潮汐流的强烈减少引发了潮汐-三角洲前缘的侵蚀，在三角洲平台向海边缘建造了与海岸平行的线性潮间带沙洲，水准杆的平整和潮汐通道的填充。

鹿特丹港口在Haringvliet潮汐三角洲以北的逐步延伸使该地区越来越不受海浪的影响，并导致大量沙土供应。最终导致对岸双杠的破坏和侵蚀。此外，大规模的沉积减少了该区域的平均深度。格里维林根潮汐三角洲的裸露位置较多，泥沙供应量较小，尚未达到破坏条形的阶段。

在三个阶段的概念模型中，总结了由相关河口或潮汐口的潮汐流阻塞所引起的潮汐三角洲的发展。该模型可以帮助评估河口和潮汐口的干预措施的影响，例如减轻海平面上升的影响。