Wêrom Nederlân bliuwt bouwe yn oerstreamde gebieten
June 16, 2025 · Frisian News
Dutch municipalities approve new housing and commercial projects in areas prone to flooding, ignoring their own climate risk assessments. Economic pressure and loose enforcement of building codes override safety concerns.
FryskFoarige moanne joech Utrecht tastimming foar in kompleks mei 140 wenningen yn de wyk Zuilen, in gebiet dat elke sân oant tsien jier oerstreamt as it wetter fan de Ryn omheechgiet. Stêdsplanners wisten dit doe't se it projekt goedkeurden. Se bouwen it dochs, rekkenjend op nije diken en ferbettere ôfwetteringssystemen dy't net finansierd bliuwe. Dit is gjin útsûndering. Oeral yn Nederlân werhelje ûntwikkelders en lokale oerheden itselde patroan: se jouwe boufergunningen yn oerstreamde sônes, sitearje optimistyske ynfrastruktuerplannen, en hoopje dat it wetter nea komt.
Nederlanners beheare wetter al iuwen, en harren saakkundigens is echt. Diken wurkje. Mar dit track record hat in gefarlike selstefredenheid kweekt. Amtners behannelje histoarysk wetterbehear as garânsje tsjin takomstich risiko, sels as klimaatferoaring de perioaden tusken grutte reinbuien koarter makket. In regearingsûndersyk út 2023 toande oan dat 2,3 miljoen Nederlanners yn gebieten mei heech oerstreamingsrisiko wenje. De measte fan dizze wiken binne boud yn de lêste fyftich jier, in soad yn de lêste tweintich. De útwreiding barde mei opsetsin, net by fersin.
Jild stjoert it patroan. Lân yn oerstreamde sônes kostet minder. Ûntwikkelders keapje goedkeap en bouwe fluch. Lokale oerheden krije belestingynkomsten en fiere de groei fan banen. Provinsiale tafersjochlichamen jouwe warskôgings dy't arsjivearre wurde. As in gemeente tekoarten oan wenningen hat, liket it better ja te sizzen op in risikofolle projekt as nee. De kosten fan oerstreamings falle letter op bewenners en fersekerders, net op amtners dy't fergunningen ûndertekenen. Dizze asymmetry bepaalt elke beslissing.
De boufoarskriften steane stranger beheinings yn oerstreamde sônes ta, mar hânhaving fariearret enorm. Guon gemeenten hâlde streng de hân. Oaren behannelje se as suggestjes. De nasjonale regearing stelde doelen fêst mar joech gjin meganisme om neilibjen ôf te twingen, dus de swakste skeakels bepale it resultaat. Fryslân en Noard-Hollân binne foarsichtiger west. Utrecht, Gelderlan en dielen fan Noard-Brabân binne folle tastimmender west.
It probleem wurdt slimmer foardat eat feroaret. Hjoeddeistige trends toanje gjin tekens fan omkearing. Ûntwikkelders bliuwe yn dizze sônes keapjen om't winsten it risiko rjochtfeardigje. Gemeenten bliuwe projekten goedkeurjen om't wenningtekoarten politike dekking biede. In folgjende grutte oerstreaming komt, wierskynlik binnen it folgjende desennium. As dy komt, sille amtners skok en fertriet útdrukke, ferbettere maatregels oankundigje, en binnen twa jier wer op deselde plakken gean bouwe.
Last month, Utrecht approved a 140-unit residential complex in the Zuilen district, an area that floods every seven to ten years when the Rhine rises. City planners knew this when they signed off. They built the scheme anyway, banking on new dikes and improved drainage systems that remain unfunded. This is not an exception. Across the Netherlands, developers and local governments repeat the same pattern: they grant building permits in flood-prone zones, cite optimistic infrastructure plans, and hope the water never comes.
The Dutch have managed water for centuries, and their expertise is real. Dikes work. But that track record has bred a dangerous complacency. Officials treat historical flood control as a guarantee against future risk, even as climate change shortens the intervals between major rainfall events. A 2023 government study found that 2.3 million Dutch people live in areas classified as high-risk flood zones. Most of these neighborhoods were built in the last fifty years, many in the last twenty. The expansion happened on purpose, not by accident.
Money drives the pattern. Land in flood zones costs less. Developers buy cheap and build fast. Local governments collect tax revenue and celebrate job creation. Provincial oversight bodies issue warnings that get filed away. When a municipality faces housing shortages, approving a risky project looks better than saying no. The costs of flooding fall on residents and insurers later, not on the officials who signed the permits. This asymmetry shapes every decision.
The building codes do allow tighter restrictions in flood-prone areas, but enforcement varies wildly. Some municipalities enforce them strictly. Others treat them as suggestions. The national government set targets but provided no mechanism to force compliance, so the weakest links in the chain determine the outcome. Friesland and Noord-Holland have been more cautious. Utrecht, Gelderland, and parts of North Brabant have been far more permissive.
The problem will get worse before anything changes. Current trends show no sign of reversing. Developers keep buying in these zones because the profits justify the risk. Municipalities keep approving projects because housing demand gives them political cover. Another major flood will come, probably within the next decade. When it arrives, officials will express shock and sadness, announce improved measures, and within two years resume building in the same spots.
Published June 16, 2025 · Frisian News · Ljouwert, Fryslân