Research and analysis

Valuing the benefits of blue-green infrastructure

An approach to help identify and quantify the financial, social and environmental benefits of sustainable drainage systems and natural flood management.

Documents

Valuing the benefits of blue-green infrastructure

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Details

The Environment Agency has worked in partnership with CIRIA and others to update B£ST (Benefits Estimation Tool –valuing the benefits of blue-green infrastructure).

B£ST provides a structured approach to help identify and quantify the financial, social and environmental benefits of sustainable drainage systems (SuDS) and natural flood management (NFM) measures – collectively known as blue-green infrastructure.

The updated tool is based on the latest evidence and can be used to support the cost–benefit assessments needed to secure investment in new blue-green infrastructure. It will help risk management authorities, planners, landscape architects and drainage engineers to understand and measure the benefits of blue-green infrastructure in urban, semi-urban and rural settings. They can also compare blue-green infrastructure to more traditional approaches such as flood walls and piped drainage.

B£ST also measures and financially quantifies the multiple benefits of SuDS and NFM approaches beyond reducing flood risk. This can help to identify potential interested partners to collaborate with to provide new schemes and open up funding opportunities.

Published 4 November 2019