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Title: Tamar Lakes project 2001 : initial assessment of nutrient data to identify pollution sources, assess the effect of Tamar Lakes on the downstream water quality and to recommend future monitoring requirements
Author: Julian Greaves
Document Type: Monograph
Annotation: EA additional title info: environment protection section Cornwall area final report October 2001
This study has been undertaken to analyse existing data, collected from the Tamar Lakes catchment to identify and assess: a) Pollution sources directly to the lakes and the upstream catchment. b) The input of key nutrients into Tamar Lakes, including any apparent temporal trends. c) Any impact the lakes may have on the downstream stretches of the river Tamar. d) Future requirements for a detailed monitoring program of both lakes and catchment. The Tamar Lakes catchment comprises ca. 17 km 2 of agricultural land, some 5 km 2 of which drain directly into the Upper and Lower Tamar lakes (UTL an LTL). The river Tamar upstream and downstream of the lakes has a River Quality Objective (RQO) of River Ecosystem (RE) classification 2 and is subject to EC Freshwater Fish Directive (salmonid) (FFD). Regular breaches of the RE classification have occurred since designation in 1996. The UTL is subject to both EC FFD and a EC Abstraction Directive for potable water. Failures of the EC FFDs in the UTL have occurred in 1994, 1997 an 1999. The Lower Tamar Lake has an EC Freshwater Fish Directive (cyprinid) designation and has remained compliant in all years except 1997. A total of 13 sites in the Tamar Lakes catchment have been routinely monitored on a monthly basis.
Publisher: Environment Agency
Publication Date: 2001
Publication Place: Dorset
Subject Keywords: LakesWater reservoirsWater pollutionWater qualityNutrientsRainfallWater quality surveysPollutant load
Geographic Keywords: Tamar LakesTamar catchmentTamar
Extent: 14; + appendices
Total file downloads: 293

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