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Title: A review of the quality and status of the Suffolk and Essex estuaries and coastal waters : volume 1 : final draft
Author: National Rivers Authority Anglian Region
Document Type: Monograph
The objective of this report was to bring together all the pertinent details with respect to matters influencing estuarine and coastal water quality. This data gained was then used in assessing the quality status of each estuary, utilising chemical and biological data. Historical data has also been brought together in one document for the first time, to give a perspective of changes that have occurred over several decades. Taking into account all relevant factors influencing water quality the following grades for the estuaries were derived: Excellent - Ore/Aide; Good - Stour, Walton Backwaters, Blyth and Blackwater; Fair - Deben, Crouch and Roach; Poor - Orwell and Colne. Unexpected results were attained from the Blackwater, where, considering the high proportion of effluent in its upper reaches we anticipated poor quality, and the Colne, which is far worse than previously supposed, mainly due to the input from Colchester STW. Coastal waters have limited chemical and biological data but enough to surmise that water quality is excellent. However, levels of some heavy metals are cause for concern and increased monitoring is required.
Publisher: National Rivers Authority
Publication Date: 1989
Publication Place: Peterborough
Subject Keywords: EstuariesCoastal watersWater qualityEffluentsData
Geographic Keywords: SuffolkEssexEA Anglian
Extent: 9; + tables
Total file downloads: 235

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