Can improving biodiversity in Oxfordshire contribute to reducing flood risk? We think it can and there are conversations taking place across the county which could move this forward.
Oxfordshire County Council is developing a Local Nature Recovery Strategy (LNRS) for the county. This flows from the 2021 Environment Act and government commitments to improve biodiversity across the UK. Oxford Flood Alliance has been participating in consultation meetings on the strategy. We’re interested in ways natural flood management in the catchment can help reduce flood risk.
The County is using expert advice alongside wide-ranging public consultation. Twelve workshops were held in March involving more than 300 participants, including conservationists, farmers and local government officers. A survey of local people received 650 responses. Results of these engagement activities were presented in an online meeting on 9 May attended by more than 100 people.
What matters most?
The two issues that gained the widest support from these consultations were improving the quality of our rivers and freshwater habitats and stopping river pollution from sewage and agricultural runoff. Benefits expected to come from this included reduced flooding (number 2 for the workshops and 3 in the survey result). There was also strong support for an end to building in the floodplain. Â Thames Water cleaning up its act is critical to reducing pollution.
Simon Collings from OFA asked how reducing flood risk would be reflected in the priorities for  the strategy. Chloe Edwards, who leads on this work at the County Council, said this would be through identifying habitat improvements which included natural flood management to benefit properties and/or farmland. She said she expected this to be a significant component of the strategy.
How could this reduce flood risk?
LNRS is not the only county-wide strategy for dealing with flood risk, or even the main one, but slowing runoff and improving storage upstream across the Thames catchment could help. To see an example of this in action watch this video about the Evenlode Catchment Project. (The section of flood management starts around 9 mins in.)
Another example is outlined in the Bernwood, Otmoor, and Ray (BOR) strategy developed by BBOWT. The River Ray drains into the Cherwell, which joins the Thames in Oxford. The BBOWT plan is to create wetland areas which would slow the discharge of water from the Ray into the wider river system. Working with farmers will be critical in achieving this. The LNRS will incorporate existing initiatives like these as building blocks.
What does it mean for OFAS?
These strategies are not an alternative to the Oxford Flood Alleviation Scheme but they could help as climate change takes effect. They are also important for the survival of our wildlife. Connecting up areas of surviving biodiversity is seen as a key objective of the strategy. The OFAS scheme is designed to deliver biodiversity net gain as well as flood protection. The project could contribute to the creation of more joined-up habitat across the county.
The LNRS is intended to provide a focus for government funding decisions and a basis for various actors to collaborate. But it won’t be the only game in town. It is envisaged that there will still be a lot of other activity taking place over and above what’s included in the strategy.