Risk Analysis Flooding Heavy Precipitation - Safety - Road Accessibility (70MM) (2023)

Description

In the event of heavy rain, the water on the streets can become so high that certain road sections become impassable for passenger cars, or even for emergency traffic such as ambulances, police and fire brigade. Safety related to emergency services: in a T100 shower (70mm/1h) there should not be more than 15cm water depth anywhere. This map layer shows which roads remain accessible in three categories. A total of 1055 kilometres of road is present, of which 196 kilometres become impassable in a T100 shower, and therefore does not meet the safety standard (orange road sections are still included). About this risk analysis: In order to get a clear picture of where flooding will occur during extreme precipitation, the Province of Zuid-Holland consultancy Nelen & Schuurmans has had the provincial infrastructure of Zuid-Holland tested on a model basis (2023). This is also called a stress test. This stress test is based on a certain total precipitation - calculated for 35 millimetres and 70 millimetres, over the relevant area around the roads managed by the province, in a period of one hour. The relevant area has been determined on the basis of the publicly available road file, included in the Large-Scale Topography Basic Registration (BGT). The roads are filtered by the road operator; the roads included in the analysis are in the management of the Province of Zuid-Holland.

Resources

Name Format Description Link
0 https://geodata.zuid-holland.nl/geoserver/klimaat/wfs?service=WFS&version=2.0.0&request=GetCapabilities
0 https://geodata.zuid-holland.nl/geoserver/klimaat/wms?service=WMS&version=1.3.0&request=GetCapabilities
21 https://geo.zuid-holland.nl/Metadata/Documenten_metadata/20230607%20-%20Rapportage%20risicoanalyse%20wateroverlast%20provinciale%20wegen%20Zuid-Holland.pdf
21 https://geoservices.zuid-holland.nl/arcgis/rest/services/Klimaat/Klimaat/MapServer
23 https://www.nationaalgeoregister.nl/geonetwork/srv/dut/catalog.search#/metadata/ad37e3d6-e249-49b0-93b6-511c34e87614
34 https://geodata.zuid-holland.nl/geoserver/klimaat/wms?service=WMS&version=1.3.0&request=GetMap&layers=klimaat%253AWATERDIEPTE_PROVWEGEN_HEVIGE_NEERSLAG_2023_BEGAANBAARHEID_70MM&bbox=60022.10649999976%252C411665.9591999985%252C126945.98849999905%252C481136.0&width=739&height=768&srs=EPSG%253A28992&maxFeatures=40000&format=image%252Fpng

Tags

  • waterdiepte
  • klimaatatlas
  • hevige-neerslag
  • wateroverlast
  • klimaat
  • provinciale-wegen

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