Water Sensitive Urban Design

14 important questions on Water Sensitive Urban Design

Which water design concepts are there in Urban Design?

  • Low Impact Development (LID)
    • f.i. USA
  • Sustainable Drainage Systems (SuDS)
    • f.i. UK
  • Water Sensitive Urban Design (WSUD)
    • f.i. AUS, NL, UK

What is Low Impact Development (LID)?

Hydrologically functional site design combined with pollution prevention measures to compensate for land development impacts on hydrology and water quality

What is a Sustainable Drainage System (SuDS)?

Departure from traditional approach to draining sites.

Key principles:
  • storing runoff and releasing it slowly (attenuation)
  • allowing water to soak into the ground (infiltration)
  • slowly transporting water (conveying)
  • filtering pollutants
  • allowing sedimentation by controlling flow of water  
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What is Water Sensitive Urban Design (WSUD)?

Interdisciplinary cooperation of water management, urban design and landscape planning.

WSUD develops integrative strategies for ecological, economical, social and cultural sustainability.

WSUD vs. LID / SuDS

  • WSUD implements best practice guidelines
    • f.i. SuDS, LID, BMP's
  • LID and SuDS are non-holistic approaches, generally applied in isolation or at the minimum legislative level
  • WSUD implies a planning approach in an urban water management transition towards water sensitive cities

What are the steps in the Urban Water Management Transitions Framework?

  • Water Supply City
    • Access to water
    • Supply hydraulics
  • Sewered City
    • Public Health Protection
    • Separate Sewage schemes
  • Drained City
    • Flood protection
    • Drainage channelisation
  • Waterway City
    • Social amenity, environmental
    • Point & diffuse source pollution management
  • Water Cycle City
    • Limits on natural resource
    • Diverse, fit for purpose
  • Water Sensitive City
    • Inter-generational equality
    • Adaptive, multifunctional infrastructure

What does Water Sensitive Urban Design (WSUD) incorporate?

  • Integrated management of all water
  • Beneficial use of surface runoff
  • Reuse of wastewater
  • Vegetation for treatment
  • Water saving measures

What are the water effects in the 21st century?

  • Flooding
  • Water in the streets
  • Water shortage and droughts
  • Heat stress

How do we deal with challenges in the urban water system?

By utilizing a water system that manages:
  • Water quantity
    • flood control
    • restrict drought
  • Water quality
    • reduction of emissions
    • ecology
  • Spatial planning
    • zoning
    • urban design

What are the three pillars of a Water Sensitive City?

  1. Building flexibility and adaptability in our water sources
  2. Green infrastructure
  3. Building a social and institutional capital

What are examples of design elements in Water Sensitive Urban Design (WSUD)?

  • Green roofs
  • Permeable pavements
  • Rainwater harvesting
  • Infiltration trenches/basins
  • Filter drains

What is Water Sensitive Urban Design (WSUD) affected by?

  • Land use
  • Slope of terrain
  • Groundwater depths and dynamics
  • Soil type
  • Climate characteristics

What is the Urban Drainage Manual (UDM)?

A manual drafted by the municipalities based on technical standards. Usually a part of 'Public Space Design Manual'

What are the responsibilities mentioned in the Urban Drainage Manual (UDM)?

  1. Storm water Runoff
  2. Discharge sewage
  3. Maintaining groundwater levels
  4. Incorporate best-practice guidelines
    1. f.i. SuDS, WSUD etc)

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