How much of the Netherlands is affected by the problem regulated by the Hoogheemraadschap van Rijnland?
Hoogheemraadschap van Rijnland The Hoogheemraadschap van Rijnland is the oldest water board of the Netherlands, having received its first commission to protect the land from flooding back in 1248 from William II of Holland. It conducts water control activities in the general area known as Rijnland. The Netherlands has 27 Waterboards or "Waterschappen" acting independently from the National government administration to manage the continuing Dutch struggle against water.
Amsterdam-Zuid Amsterdam-Zuid ("Amsterdam South") is a borough ("stadsdeel") of Amsterdam, Netherlands. The borough was formed in 2010 as a merger of the former boroughs Oud-Zuid and Zuideramstel. The borough has almost 138,000 inhabitants (2013). With 8,500 homes per square kilometer, it is one of the most densely populated boroughs of Amsterdam. It has the highest income per household of all boroughs in Amsterdam.