Infiltration Wells in the Lakes Around the Future Markerwaard Polderby Arnold J. Hebbink, IJsselmeerpolders Development, Authority, Lelystad, Netherlands,
Abstract: Drainage and reclamation of the Markerwaard polder in the Netherlands may cause damage to buildings and infrastructure in the eastern part of North-Holland because of subsidence. Drawdown of the piezometric head can be entirely or partially countered by means of artificial recharge of water into the aquifer(s). Another alternative is the infiltration of water by means of the installation of infiltration wells in the lakes around the Markerwaard. By this method the natural head loss, which is present between the surface water level in the lakes and the piezometric head of the deep ground water, is used for the infiltration of water. To prevent the infiltration wells from clogging, a sand/gravel filter is necessary to filter the surface water to an acceptable quality. In this paper the set up of a pilot project is described as well as the results of one year of measuring.
Subject Headings: Infiltration | Lakes | Filters | Wells (water) | Head (fluid mechanics) | Land subsidence | Surface water | Netherlands
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