OFA Update / OFAS & Flood Exercise

This update has recently been sent to those on our mailing list.

Dear OFA contact,

We last sent out an update in Oct 2019, just after the news about the problems with the A423 bridge (southern bypass) and likely delays to the Oxford Flood Alleviation Scheme (OFAS). OFA is still active and has been participating in meetings of the Sponsoring Group for the OFAS scheme and has also held separate meetings with the Environment Agency team about water course maintenance since our last update.

Despite the A423 issues, and the challenges presented by coronavirus, the OFAS scheme continues to progress. The EA and the County Council have agreed a collaborative approach to replacing the A423 bridge and constructing the OFAS scheme. This should save on costs for OFAS, and reduce the level of maintenance required in future.

The EA withdrew the original planning application earlier in the year and is currently revising this to incorporate the new A423 arrangements, and to update the documents on some other aspects of the scheme. Once these are resubmitted to the planning authority the public will have a fresh opportunity to comment on the plans. The EA is continuing to meet with objectors to the scheme with a view to trying to address outstanding areas of public concern.

Because OFAS is now expected to be delivered two years later than originally expected it is important that effective flood response procedures are in place in case a major flood event happens in the next few years. The EA, Fire Brigade and the local Council officials will be holding a practice response on 20 August to test aspects of current procedures. Because of coronavirus these will not involve the pubic.

The text of a recent update from the Environment Agency is pasted below which provides some additional information on OFAS and other matters,

OFA Steering Group

Oxford Scheme update

A423 bridge replacement

Oxfordshire County Council began the propping work on the A423 Kennington Railway Bridge in July.

Replacement of the A423 Bridge has provided an opportunity to design and build the bridge and the flood scheme together. This allows us to reduce disruption during construction and ensure the best use of public money. The updated design will use open channels instead of culverts to allow the flow of floodwater under the bridge. This will provide a better environment for wildlife and requires less maintenance.

The bridge is at the southern end of the scheme and during a flood, water would need to pass underneath it to re-join the River Thames. This capacity needs to be in place before the scheme is constructed to avoid increasing flood risk elsewhere. We also need to have all approvals, including planning permission and our Compulsory Purchase Order secured.

South Hinksey Archaeology

If you’ve been walking near South Hinksey, you may have spotted our contractors on site. We are carrying out archaeology surveys in a field near South Hinksey village to check whether the area is suitable for us to use as the main compound for when we construct the scheme. The archaeology surveys will determine whether there are any historical artefacts in the field. We want to ensure there’s no risk of us damaging any artefacts or remains. Once we have finished the investigations, we will remove our equipment from the site and reinstate the fields.

Kendall Copse Ground Investigations

To complement the new A423 bridge replacement, we are reviewing the design of the scheme around Kendall Copse, near Kennington.

From 10 August, we will be digging trial pits and drilling boreholes to understand the ground conditions beneath the site in order to finalise these designs.

Oxford Flood Incident Exercise

To ensure our flood protection plans are well-tested, the Oxford Flood Alleviation Scheme partners and emergency responders will be practicing their incident response plans on 20 August 2020.

The flood response exercise will consist of:

 •temporary flood barriers in South Hinksey and Bullstake Close

•pumps to remove flood water along Botley Road

Due to the current Government guidance on public gatherings, we won’t be able to invite members of the community to attend. We will be sharing updates on Twitter and Facebook as the exercise progresses. We will also share video footage of the temporary barriers and pumps so you can see our field teams in action.

Managing your flood risk

During the summer months, flood risk might be low on your list of priorities, but Environment Agency officers are thinking about it year-round. Throughout the year our operations staff carry out inspections and clear debris to keep main rivers moving. To report a blockage that could cause flooding call our 24 incident hotline: 0800 80 70 60.

You can also find out what maintenance is planned in your area: environment.data.gov.uk/asset-management/index.html

Stay prepared by signing up for flood alerts and preparing a flood plan: https://flood-warning-information.service.gov.uk

  

Want to know more?

If you have any questions or want to be added to our mailing list, please contact us at: OxfordScheme@environment-agency.gov.uk

Seacourt again

There’s a story in yesterday’s Oxford Mail on how the Seacourt P&R extension site has been getting on in the recent rather wet weather.

 

 

Oxford today

River levels in Oxford today have not risen as far as had been predicted. So good news so far. The EA is watching things closely for the whole area.

In the case of South Hinksey, the barriers which were delivered there this morning are to be kept in reserve for now. Barriers for other areas remain in reserve at Osney.

Frozen

The Seacourt car park extension site has been pumped out for a few days following Storm Brendan which has brought huge amounts of water from our extensive catchment in the Cotswolds. But today the site is again filled with water, which has frozen overnight.

The trauma of flooding

Unsurprisingly, flooding has both short and long term adverse effects on people’s physical and mental health and wellbeing.

A BBC article today ‘Communities in Calderdale ‘traumatised’ by 2015 floods’ illustrates just how traumatic flooding can be. Here’s a short excerpt:

“Every time it rains you can feel the tension,” said Hebden Bridge flood warden Andrew Entwistle. “Especially when the sirens go off, you can feel the anxiety radiating from people, asking what the situation is and how bad it’s going to get.”

Back in 2015, the former firefighter was eating a late Christmas Day lunch when the flood alert was first sounded – signalling the start of heavy rain which led to the River Calder bursting its banks. Some 18 months later, the 76-year-old turned to counselling to help him deal with what he had witnessed.

He recalls: “I’ve been used to handling floods and disasters but this was on another level. One lady collapsed on the street in front of me. The stress levels and sheer amount of tragedy that unfolded is indescribable and those feelings don’t just disappear.”

Seacourt P&R extension – further updates

Work began again briefly as mentioned in the last post. Water was pumped from the site into a ditch newly dug nearby and leading to Seacourt Stream.

River levels have now risen further. Pumping has stopped and the site is again abandoned.

Were it a car park it would be unusable of course.

This post will be updated periodically (see photos).

Work resumed on 7 January 2020. This latest flood was another 18 days, taking total flooding of the site this winter to 6 weeks 5 days. The prediction in the planning application was for 2 weeks a year. It remains to be seen how it averages out over a number of years.

Work resumed at Seacourt P&R today

Work resumed at Seacourt P&R extension today, 4 weeks and a day after it had to stop because the site had flooded. Here is the sequence from 11 November to today.