Climate change adaptation by design - Town and Country Planning ...

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Climate change adaptation by design - Town and Country Planning ...

case studies Adaptable urban drainage, AUDACIOUS research project The AUDACIOUS project took account of potential future changes in climate and urban form to evaluate solutions for urban drainage. It focussed on problems of fl ooding associated with surface water run-off and sewer surcharging linked to intense rainfall events. The project found that institutional barriers present a major challenge to managing fl ood risks, and underlines the importance of building capacity within stakeholder groups and clear distribution of roles and responsibilities. AUDACIOUS proposes using a surface water management plan (SWMP) to help understand fl ood risks and plan responses (See image page 27). Other outputs include: • A new urban hydrology runoff model which is fl exible enough to accommodate new information about climate change as this becomes available. • New building drainage (storm and sanitary) simulation models. • A new whole-life-cost risk based methodology for assessing fl ood risk and response effectiveness • Guidance for building stakeholder capacity. More info: www.k4cc.org/bkcc/audacious Canal Basin Regeneration, Gravesend Gravesend is located within the Thames estuary and a signifi cant portion of the canal basin regeneration site is part of the historic fl oodplain of low lying marsh. A Strategic Flood Risk Assessment (SFRA) has been undertaken to analyse the main risks. The site developer and architect have also used a site fl ood risk assessment to plan for extreme events. Other fl ood management strategies include: setting back river edge fl ood defences to make space for water; incorporating fl ood fl ow paths and storage within the site; locating vulnerable uses in low risk areas; designing resilient buildings and emergency access routes; and incorporating SUDS. These will allow the local planning authority to apply a risk based approach to site allocation in the LDF and to development control decisions. More info: www.gravesham.gov.uk Upton One Urban Extension, Northamptonshire One of Upton’s key features is its SUDS which manages rainwater run-off and promotes local biodiversity. Consisting primarily of linked swales, SUDS at Upton provide the underlying basis of the landscape structure, and is connected with the streets and built form. A company has been established to manage the SUDS and maintain communal courtyards. Rainwater harvesting has also been incorporated. The plan was created through a collaborative design exercise putting the community at the heart of decision-making. Design Codes were used by partners as the basis for drawing up development briefs, and for assessing developer proposals prior to submission for planning permission. This strong community-oriented process emphasises environmental responsiveness and aims to minimise future running costs. More info: www.northampton.gov.uk Canal Basin Regeneration, Gravesend Source: Gravesham Borough Council Upton One Urban Extension, Northamptonshire Source: D. Waterhouse, TCPA 28

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