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Title: Regional water quality monitoring and surveillance programme for 1992 : quality assessment of enclosed waters by G. Hawley
Author: G. Hawley
Document Type: Monograph
The Controlled Waters (Lakes and Ponds) Order, 1989, for purposes of the Water Act 1989, defines certain reservoirs as relevant lakes and ponds. This monitoring programme enables the quality of such reservoirs and other enclosed waters to be assessed. 28 reservoirs are monitored monthly to assess water quality in standing waters. Samples are analysed from three depths (surface, 0-5 m composite, bottom + 1 m). A total of 200 sites are visited each month and these are divided into 84 river sites (inflow or outflow streams) and 116 sites located in reservoirs and sampled from a small boat. This programme produces 2400 samples for analysis. At each site 52 standard sanitary, metals and bacteriological determinands are analysed monthly, and 31 pesticide determinands are analysed quarterly and an assessment of the phytoplankton is made each month. Temperature and dissolved oxygen profiles of the water column are obtained each month by measuring values at 1 m intervals. The major feeder (inflow) and outflow streams are also monitored chemically.
Publisher: National Rivers Authority
Publication Date: 1992
Publication Place: Exeter
Subject Keywords: Lentic waters (static)Water reservoirsWater qualityPollutantsPesticidesPollution control
Geographic Keywords: Tamar LakesCornwallDevonAvon (Devon)
Extent: 10; + appendices
Total file downloads: 300

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