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Wimbleball Dam maintenance project

Wimbleball Dam FAQs

How will the work be done?

Lostwithiel storm storage tank

Dartmoor reservoirs upgrade

Wimbleball Dam maintenance project

Diagram of the drilling process

South West Water and Wessex Water, which both take water from Wimbleball Lake, are carrying out a joint maintenance project on the dam from 7 January 2013.

The work, which is expected to last until December 2013, involves injecting grout into the bedrock to block fissures and prevent water ingress. This is being carried out by drilling through the ground from the land side and from the top of the dam using drilling rigs.

How the work may affect you
In the interests of safety, there will be occasions when the bridleway next to the dam and the permitted footpath across the dam will be closed. However, it is our intention to maintain access whenever possible.

Our environmental commitment
We are committed to carrying out work in an environmentally considerate way. Under the guidance of an ecologist we have removed some self-seeded trees and there will be removal of scrub near the dam to provide a level stable platform for the machinery.

Latest update
May: Grout trial works have now started on the southern side of the dam. There is a high likelihood that the dam will be closed for long periods whilst we complete this section of work.

Location of main works

The map shows the main area of work in relation to the dam

Map of Wimbleball dam and location of works