FLOOD ALLEVIATION SCHEMES
Our objective is to reduce the consequences of ﬂooding from all sources, including rivers and surface water. Whilst we cannot prevent ﬂooding, we are developing key ﬂood alleviation schemes within high risk areas to reduce its destructive outcome.
The most advanced are our proposals for the Hoe Stream which will reduce the risk of ﬂooding by Incorporating wetlands, bypass channels, ﬂood bunds and other sustainable drainage solutions.
This scheme will also focus on improving the ecology and environment of the river channel and the surrounding area. The scheme is located with the Hoe Stream catchment in Mayford, as well as downstream near White Rose Lane and Queen Elizabeth Way.
Proposals are also being developed to reduce ﬂood risk in Old Woking and Byﬂeet which will have the same vision and objectives as the Hoe Stream Flood Alleviation and Environmental Enhancement Scheme.
FLOOD ALLEVIATION SCHEMES
WHAT WE ARE DOING
Awareness of the ﬂood risk is vitally important. To achieve this in areas where residents are at high risk of river ﬂooding, we have created ﬂood plans and information literature that explains what to do in case of a ﬂood, what the different warnings mean and who can assist.
Working with residents and schools through a series of educational workshops and forums, we have raised awareness of how all our actions can contribute to an increased ﬂood risk, as well explaining how to stay safe in the event of ﬂooding.
Each annual Rivers Week, we organise a river clearance of the Hoe Stream to remove ﬂy-tipped waste and other detritus. These works aim to educate residents on rivers and the importance of caring for them, whilst reducing the risk of blockages which, if left, can increase the ﬂood risk to residents.
Planning and SuDS
The Drainage and Flood Risk Team comment on all planning applications within the Borough. We ensure that development does not increase ﬂood risk to the site or the surrounding area.
To achieve this, developments must use Sustainable Drainage Systems (SuDS), which could include features such as swales, ponds and permeable paving.
Ordinary watercourse clearance
Through our environmental services contractor, Serco, regular maintenance of ditches and ordinary watercourses within Borough Council owned land is conducted.
This regular maintenance ensures that blockages are removed, pipes and culverts are kept clear and ditches sustained. By maintaining the ordinary watercourses, localised ﬂooding is reduced.
If you have a watercourse ﬂowing through or adjacent to your property, you are known as a riparian owner.
Under common law, there are certain rights and responsibilities relating to your stretch of the watercourse.
If you are unsure of your responsibilities, please ask or pick up our helpful leaﬂet on your rights and responsibilities.
Rainwater Garden Project
This project focuses on reducing ﬂood risk locally by utilising highway verges as storage for surface water drainage.
By changing the shape of these verges, the vegetation within them and removing the highway gully, rainwater would be directed away from properties, footpaths and highways. Therefore reducing stress on the surface water sewer system.
HOW TEN ACRE FARM COULD HELP
Ten Acre Farm falls to the west of the existing ﬂood alleviation plans. The current proposals are effectively stopped by the railway line and embankment.
The site is within Flood Zones 2 and 3 of the ﬂood map, the majority being in Flood Zone 2. Higher levels of the Hoe Stream are required before natural ﬂooding of the site occurs, thereby adding to initial ﬂooding elsewhere in the Hoe Valley.
The previous occupants have raised the ground level by the tipping of building materials and built-up hard standings. The original level of the site would have provided far more land within Flood Zone 3
Remodelling of the existing levels on Ten Acre Farm provides us with the opportunity to extend the current ﬂood alleviation plans further along the Hoe Stream. By adding more capacity to Flood Zone 3, there are associated beneﬁts including improvements to the ecology and environment of the river channel and the surrounding area, whilst extending the Environmental Enhancement Scheme.