Working with Natural Processes for the Garganey Trust

Challenge

In late 2015, we were approached by the Garganey Trust to undertake the feasibility and design of a combined wetland and Working with Natural Processes (WWNP) project in the Dearne Valley near Barnsley.

The aim of the project was to protect a nearby Park Home site and provide a variety of wet grassland and reed bed habitat on the floodplain.

During the feasibility study, we identified the likely combination of measures which would provide the requisite habitat gain and flood protection. The preferred option consisted of a shallow bund, a reed bed and extensive wet grassland complex which progressed to full design.

A substantial element of the funding mix was to be provided by the Heritage Lottery Fund (HLF). To ensure the amount required to undertake the scheme was fulfilled, further funding was required. The Environment Agency (EA) Flood Defence Grant-in-Aid (FDGiA) funding was a potential source to help. This, however, placed a requirement on the project team to quantify the flood risk benefits of the scheme.

Solution

A detailed 1D-2D linked hydraulic model was built to cover the study area. This allowed the flood risk benefits of our proposed scheme to be calculated. It showed that currently a Park Home site in a 25-year return period event. However, following installation of the proposed wetland and bund scheme, the park is protected, up to and including, for the 75-year return period event.

Benefit

This unique mix of funding streams (HLF, FDGiA, EA biodiversity funds, Landfill Communities Fund and other sources) reflects the nature of the works. This brings multiple benefits and transform seven hectares of arable farmland into a unique complex of wetland habitats. It also provides flood protection to a number of properties.

Want to know more?

Please contact David Mould to find out more about this specific project.

If you would like to discuss potential funding sources for your WWNP project, please contact Steve Maslen.

You can also visit our Environmental Services pages to find out more about the different areas we can support you with.



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