. . . . . . . "You can consult the archives and collections in the study room. This is only possible by appointment."@en . . . "The Hoogheemraadschap of the Krimpenerwaard is about a century and a half younger than the Hoogheemraadschap of Schieland. It was established in 1430 after the Sint-Elisabethflood of 1421, when the need for care of the river dykes was recognised."@en . . . . . "Hoogheemraadschap van Schieland en de Krimpenerwaard"@en . .