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Title: Water quality investigations in the Newlyn river catchment
Author: National Rivers Authority South West Region
Document Type: Monograph
Following the discovery of high aldrin and dieldrin concentrations in eels obtained from the Newlyn River an investigation was carried out to determine the source of these pesticides. Water quality, sediment analysis and invertebrate surveys indicate that aldrin and dieldrin are entering the Trereife Stream a tributary of the Newlyn River. Concentrations of dieldrin were found to be high in trout and eels collected from the Newlyn River downstream of the Trereife Stream. Marine shellfish analysed from various sites in Mount's Bay were found to have minimal contamination by these pesticides. Recomendations have been made to control pesticide contamination of the Newlyn River and include: Notification of the findings to MAFF, DoE and relevant authorities; Continuation of water quality and biota monitoring and a review of the findings in April 1990.
Publisher: National Rivers Authority
Publication Date: 1989
Publication Place: Exeter
Subject Keywords: RiversWater pollutionPesticidesWater qualitySediment samplingInvertebratesFreshwater fishesTroutFreshwater eels
Geographic Keywords: EA South WestCornwallWest Cornwall and the Fal catchment
Taxonomic Keywords: Salmo truttaAnguillidae
Extent: n.p. [48]
Total file downloads: 288

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