Inspiration Card
Nature Based Solution
Natural and Semi-Natural Water Bodies

N23 Daylighting

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Climate Resilience Water Management Natural and Climate Hazards Biodiversity Enhancement Air Quality Health and Well-being Social Justice and Social Cohesion

Daylighting describes the opening of buried or covered watercourses, such as rivers or drainage systems, by removing concrete layers. This creates more space for the river, which allows for increased storage capacity of the channel, thereby decreasing flood risk. Both architectural and natural restoration can be considered when daylighting. Architectural restoration describes the daylighting of watercourse that still follows a concrete or constructed channel. Natural restoration refers to the daylighting of channels followed by a natural development of the riverbed and riparian zone, which can provide additional aesthetic and ecological benefits.

Conditions for Implementation
  • Limited possibilities in highly dense and built-up areas due to high cost for shifting or removing infrastructure
  • Enough space and a wide enough channel to deculvert the watercourse
  • Assimilation of knowledge about soil types under and surrounding the watercourse to guarantee the performance of the daylighting measure
Similar Terminology
River daylighting
Stream daylighting
Culvert removal
    Cooling Service Transpiration
    Building (Insulation)
    Reflection (Albedo)
    Surface Water Regulation Water Conveyance
    Water Infiltration
    Water Retention
    Water Storage
    Water Reuse
    Water Purification Water Filtering
    Water Bio-remediation
    Air Purification and Noise Reduction Deposition
    Air Biofiltration
    Noise Reduction
    Biodiversity Habitat Provision
    Socio-Cultural Services Beauty / Appearance
    Usability / Functionality
    Social Interaction
    Provisioning Service Food / Energy / Material
    Climate Regulation CO2 Sequestration