Pretty lake, but an environmental disaster
BRUINISSE _ Lake Grevelingen may offer some of the best sailing in the Netherlands, Westerm Europe’a largest salt water lake is an environmental nightmare. The Dutch watersports federation reports that at the lake’s bottom nothing grows or lives in water that is eerily dark.
The reason: a thermocline _ a cold layer of water at a 9 to 16 meters below the surface that prevents the mixing of water and disrupts the distribution of oxygen. Lake Grevelingen used to be an estuary to the North Sea that was closed off from the in the 1970s.
A lock still lets in salt water but significant tides are a thing of the past.
Even they were to return to their historic levels, it would take decafdes for the Lake Grevelingen waters to completely clear up again, environmentalists say