At the end of the 16th century, the Dutch cut the dyke near Lapscheure. The insurging water eroded out a channel which is now called "Lapscheurse Gat". Between 1746 and 1843 the Blauwe Sluis controlled the drainage of the Polders around the "Lapscheurse Gat". After the cutting of the "Lapscheurse Gat" the drainage was taken over by the Leopold Canal.
Nature reserve 'Blauwe Sluis'
The nature reserve is not accessible.
The nature reserve is visible from Zeedijk.