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Title: The Colne Barrier 1999
Author: Environment Agency
Document Type: Monograph
Abstract:
The Colne Barrier has been built to improve tidal defence of the riverside residential, commercial and industrial areas of Colchester and to provide a new defence for Wivenhoe and Rowhedge which used to be at risk from flooding by high tides. The barrier scheme has achieved these aims with minimum disturbance to the natural environment, while allowing commercial and recreational activities to continue on the river. The barrier has been built across the Colne on the downstream side of Wivenhoe. There are two gate piers either side of the navigation channel which may be closed by a pair of mitre gates similar to those used in locks on rivers and canals. This design keeps the overall height and size of the structure to the minimum and careful detailing reduces its visual impact on the surrounding area. To avoid problems of siltation or scouring in the river, the approach structures have sluices so that the distribution of the tidal flow in the river remains unchanged except when the barrier is closed. The barrier is 1 30 metres wide with a navigation opening 30 metres wide, with 10 side sluices on the Wivenhoe side and three on the Fingringhoe side.
Publisher: Environment Agency
Publication Date: 1999
Publication Place: Peterborough
Subject Keywords: Flood controlRiversFlood barriersCivil engineeringRisk management
Geographic Keywords: WivenhoeColne (Essex)Colne catchment
Extent: n.p. [8]
Permalink: http://www.environmentdata.org/archive/ealit:583
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