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Title: Assessment of the impact of discharges from Meldon Quarry on the water quality of the West Okement River
Author: National Rivers Authority South West Region
Document Type: Monograph
On 16 September 1989 a fish mortality occurred in the West Okement River downstream of the main discharge points from the Meldon Quarry complex. The West Okement River had been experiencing extreme drought conditions during the summer of 1989 and the fish mortality coincided with the first significant rainfall at the end of the drought period. Following the mortality an investigation was undertaken between 20 and 23 October 1989 to assess the effect of the major discharges from the quarry complex on water quality in the West Okement. The survey was carried out during the next period of significant rainfall following the fish mortality. Water quality has been examined in terms of compliance with applicable environmental quality standards and general changes in quality. A biological survey of the effect of discharges from the quarry complex was also undertaken. The West Okement River has a River Quality Objective of National Water Council Class 1A from its source to its confluence with the East Okement River. The West Okement River has been designated under the EC Freshwater Fish Directive for the protection of salmonid fish from Meldon Reservoir to its confluence with the East Okement River.
Publisher: National Rivers Authority
Publication Date: 1990
Publication Place: Exeter
Subject Keywords: FishesFish diseasesRiversWater qualityDirectives (European Union)Biological surveys
Geographic Keywords: OkementNorth Devon catchmentDevon
Extent: 36
Total file downloads: 36

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