Archived from the original on 2015-04-02. Retrieved 2023-09-17. "Sigmaplan". www.sigmaplan.be. Retrieved 2023-09-21. "Scheldemug voorlopig afgeremd". De... 7 KB (843 words) - 20:17, 14 December 2023 |
tide) with a nature development function. In the framework of the Belgian Sigmaplan, aimed at protecting the whole river basin against floods, more areas... 2 KB (280 words) - 08:51, 20 February 2024 |
of Hedwigepolder was proposed. In Flanders, where people worked on the Sigmaplan [nl], they proposed the depoldering of part of the Prosperpolder [nl]... 12 KB (1,207 words) - 00:01, 24 January 2023 |