Title: River Weirs - Good Practice Guide
Author: Charles Rickard
Author: Rodney Day
Author: Jeremy Purseglove
Author: Environment Agency
Document Type: Monograph
Annotation: Environment Agency Project ID:EAPRJOUT_1257, Representation ID: 417, Object ID: 2467
Abstract:
The guide is divided into two main sections. Section A is intended to give a quick overview of the subject. Section B provides more comprehensive guidance, but stops short of textbook detail. The Appendices include a large section on case studies, well illustrated with photographs, which are mainly intended to give the reader ideas of what can be achieved. The following list summarises the key issues to be considered: - Early consultation with all stakeholders will ensure that all views are considered, and no decisions are taken without considering their impact. - Weirs must be robust structures in order to withstand the hydraulic forces to which they are subjected - but they do not necessarily have to appear so. - Weirs can be dangerous - considering the safety of all parties from the outset will help to reduce the risk of accidents. - Weirs create a barrier across the river that can adversely affect wildlife (especially fish) and recreation. Appropriate design can ensure that the adverse impacts are minimised or eliminated, or even turned into a benefit. - No new weir should be constructed without first investigating if there is an alternative that will achieve the designer’s objective without compromising other interests. - No existing weir should be demolished without first considering all the impacts that might follow, including geomorphological, hydraulic, social, amenity, historic, ecological and environmental. - When planning any repair or rehabilitation works on weirs, the opportunity should be taken to consider how the weir might be improved in terms of, for example, fish migration, hydraulic performance, appearance, and recreational use.
Publisher: Environment Agency
Subject Keywords: Fisheries; Safety; Engineering; Recreation; Weirs; Rivers; Estuaries; Brackishwater environment; Freshwater ecology
Extent: 157
Permalink: http://www.environmentdata.org/archive/ealit:4678
Total file downloads: 435
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