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Cascais Bay<br />
The Outcome<br />
of Action<br />
In terms of concrete<br />
measures, green corridors,<br />
rainwater gardens and<br />
rainwater catchments are<br />
to be implemented. Green<br />
corridors and the re-naturing<br />
of Cascais streams is an<br />
ongoing adaptation measure<br />
that enjoys wide stakeholder<br />
consensus and yields<br />
positive externalities<br />
and socio-political support<br />
with relatively low levels of<br />
investment needed. Yet its<br />
effectiveness in flood risk<br />
reduction in this specific<br />
case study is still uncertain<br />
and a detailed action plan is<br />
needed for further analysis.<br />
Photo: Cascais Ambiente<br />
Green roofs, on the other<br />
hand, represent a high<br />
investment alternative<br />
that did not enjoy consensus<br />
among stakeholders and<br />
experts, and a life cycle<br />
analysis drawn from the<br />
literature review also<br />
discouraged their use when<br />
compared with alternatives<br />
such as rainwater gardens.<br />
Decentralised, privately<br />
owned rainwater catchment<br />
solutions turned out to be<br />
attractive to local decisionmakers<br />
and represent a<br />
cost-efficient strategy,<br />
considering that right fiscal<br />
and economic incentives help<br />
to stimulate private investments<br />
in such solutions.<br />
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