Dutch Polder Drainage and Land Reclamation Projects

Timeline

1. 1661–1665Polder districts of North Holland · North HollandIn the early 1660s, polder management bodies maintained existing windmill pumping stations and sluice systems, and dredged channels and reinforced dikes in some early drainage areas, protecting farmland below sea level from saltwater intrusion.
2. 1663–1668Western Dutch lowlands · HollandIn the mid-1660s, new polder projects were launched on the edges of lakes and marshes through collective funding and registration of land rights; groups of windmills and water-conveyance channels gradually drained the water bodies, converting wetlands into pasture and farmland.
3. 1666–1670Dutch Republic · HollandNewly reclaimed polder land was incorporated into local water-tax and maintenance obligation systems; exports of cheese, butter and livestock increased, and drainage and reclamation became one of the core technical means by which Holland addressed population pressure and expanded its territory.