Tagged flood

Wessex Water & Kingcombe Aquacare – working together for all of us

Kingcombe Aquacare Ltd are proud to be framework contractors for Wessex Water Services Ltd. We have built up a good relationship based on trust, reliability and understanding the needs of our client.

We have been involved in a range of projects, including the relining of final settlement lagoons, the repair and prevention of erosion, specialist fabrication design, and environmental project control.

Final Settlement Lagoons

Final settlement lagoons are found at many sewage treatment sites and are used to impound the water from the treatment process before it is released in to a watercourse. This is to allow any remaining sediment to settle out to ensure that the cleanest possible water is allowed to enter our streams and rivers.

We have been asked by Wessex Water to carry out lining works to several final settlement lagoons. We have installed Firestone EPDM liners to these lagoons to improve the integrity and extend the lives of these valuable assets.

Installing Firestone EPDM as a liner in a final settlement lagoon

Erosion repair/protection

The wet weather and high flows experienced in recent years have caused many stream and river banks to suffer accelerated erosion. Several Wessex Water outfalls have been affected with the river cutting away the banks around the asset and we have been called in to carry out repairs.

Eroded bank adjacent to a treated water outfall – before…
….and after “soft” engineering repair, using growing material to stabilise and reinforce the bank
Because of the speed of the water we also have to use “hard” repairs. In this situation we have installed a 3m high rock gabion wall to protect the lagoons from the flow of water which was eroding the outside of the bend.

Environmental Works

We also get involved with environmental works for WW such as permit applications, surveys and monitoring. We were asked to monitor the controlled drain down of a small reservoir recently. This involved measuring and recording the dissolved oxygen and turbidity levels, fish containment and maintaining a watch over the general fish health. We are pleased to announce that no fish were hurt in the undertaking of these works!

Electrofishing the outlet channel after a controlled reservoir draindown

To view our full list of services please see http://kingcombe.com/water-maintenance-services/

A Wet Night in Torquay

We have been busy with the Environment Agency in the last few weeks with additional call outs on top of our weekly maintenance visits to the Torbay area.

The majority of the work is preventative vegetation management. To increase flow and reducing blockages in water courses.

However all the leaves which gave us such a beautiful autumn have now fallen and coupled with torrential rain last week meant we were out during the night clearing blockages.

Our on-call teams were able attend site at short notice to prevent a serious rainfall event turning into flooding problems.


Purbeck rock revetment

Rock Armour Flood Defence Work

In October we completed a successful flood protection and bank revetment project in Wiltshire. The return of our wintry wet weather will likely increase enquiries for this type of work so here is a short case study to demonstrate one of the many ways we can help deal with erosion and flood protection of rivers and streams.

Flood defence revetment
Flood defence revetment

The Problem

Working on a section of river that suffers from periodic flooding Kingcombe Aquacare were asked to remedy a failed section of bank protection and remove an obstruction within the channel.

The blockage in the channel was the main cause of the problem as it was causing water to back up in a flood event and also deflecting the flow towards the river bank.

The Solution

We designed a rock armour solution and obtained the relevant approvals from the the local authority before starting on site. We arranged for a qualified ecologist to check the site for the presence of protected species before proceeding. As with all in-channel works we set out a series of environmental protection measures to protect the watercourse from our work activities. These included a sandbag cordon, sedi-mats and an oil boom.

The obstruction was removed from the channel and the existing failed revetment dismantled. Following some preparation we lowered in slabs of Purbeck rock to form a stepped wall up to the designed level. Some voids were left in the rock to enable plants to colonise and soften the look of the stone. We used geotextile material and a little concrete behind the rock where necessary to ensure our solution stands the test of time.

Our client is delighted with the finished work and so are we! We can’t wait to see how it looks in 12 months when it has had time to weather in a little. This sort of revetment is useful in slow to moderate flows where periodic flood events are possible.

There are many erosion protection solutions available ranging from living bioengineering green methods to reinforced concrete and steel piles. Whatever your requirement please do not hesitate to call us, we would be happy to talk it through with you. Alternatively, have a look here