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Title: Routine biological monitoring of river quality 1990
Author: J.A.D. Murray-Bligh
Document Type: Monograph
This report describes the routine biological river quality monitoring programme undertaken by NRA South West Region, and the results of the 1990 macro-invertebrate survey. The monitoring programme comprised approximately 950 sites covering 4230 km of river and 27 km of canal, and was planned to be completed in two years with half the sites surveyed in any one year: 505 sites were surveyed during 1990. Twenty-two of these are key sites and are visited every year, to assess annual changes. The complete programme mirrored the routine chemical monitoring programme, but included additional sites so that all reaches which had been assigned River Quality Objectives were included.
Publisher: National Rivers Authority
Publication Date: 1992
Publication Place: Exeter
Subject Keywords: RiversCanalsWater quality surveysBiological indicatorsMacroinvertebrates
Geographic Keywords: EA South West
Extent: 146
Total file downloads: 259

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