Lake - Het Groene Eiland
The lake at the “Het Groene Eiland” camping park near the town of Appeltern in the Netherlands was treated with eleven tonnes of Phoslock on the 16th and 17th of April 2008. A second application of 3.1 tons were applied on the 31st of March 2009 to bind phosphorus unaccounted for in the first application.
The lake was formerly part of “De Gouden Ham”, a large bay which itself used to be an arm of the River Maas. The two water bodies were separated in February 2008 when a series of dams were built between them in an effort to prevent nutrient rich water from ”De Gouden Ham” entering “Het Groene Eiland”. The newly formed lake has a surface area of approximately 5.3 hectares and a total water volume of 130,000 m³.
The aim of the Phoslock application was to improve the water quality by removing 110 kg and 31 kg of phosphorus from the available nutrient pool of both the water column and the releasable fraction of the sediment for the entire lake.
As a result of the improved water quality, the lake has remained open for recreational use without interruption since the application of Phoslock.