Thessaly is an agricultural region in Greece that faces frequent floods, water scarcity, declining water quality, soil degradation, and loss of natural habitats. The region is expected to get hotter and drier as climate changes, which will exacerbate water management challenges. Thessaly is also a flood-prone area, and flooding is projected to continue in the future.
This report presents a Sustainable Asset Valuation (SAVi) of nature-based, hybrid and conventional infrastructure for addressing flood risks in the region of Thessaly. It uses the SAVi methodology to holistically assess the social and environmental outcomes of nature-based infrastructure (NBI) compared to grey infrastructure (dikes) that provides similar flood risk reduction benefits.
The assessment combines a spatially explicit analysis with a system dynamics model to quantify the social, environmental and economic outcomes of three scenarios: NBI (riparian forests and floodplain restoration are implemented); hybrid infrastructure (riparian forests and floodplain restoration are implemented, and small dams are built upstream to reduce sedimentation; and grey infrastructure (new dikes are built along the river channel).
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