River Quality
RIVER QUALITY October 1992 - September 1993 Susan Wattam Assistant Scientist Scientific Department November 1993 Telephone: (0734) 535422 ENVIRONMENT AGENCY 042725 CIRCULATION LIST Mr P Lloyd, Acting Environmental Services Manager (South-East) Mr J Haines, Environmental Services Manager (West) Mr B Walker, Acting Environmental Services Manager (North-East) Mr P Greaves, Senior Pollution Officer____ el jSoU utiolT^fe^fficer / Mrs J Kinniburgh, Principal Quality Planner Mr J Eastwood, Principal Scientist Quality Regulation Dr R Sweeting, Regional Scientist Dr J Banks, Fisheries & Conservation Manager QUARTERLY RIVER QUALITY REPORT (Period: October 1992 - September 1993) - River Quality Objectives 3820 km of watercourses in the Thames region have river quality objectives and achievement against these objectives is assessed using 1 year’s chemical data. Table I shows the reaches which have failed their quality objectives for the year to September 1993. This period has seen the number of reaches failing their quality objectives fall to a new low. Only 30 reaches failed to meet their objectives, which represents 176 km of watercourse of 4.6% of the total length of watercourses assessed. Table la shows the number of reaches which failed their quality objectives, and the corresponding percentage length of watercourses assessed, over the past 15 months. Table 2a is a matrix showing the total length of river in each class against objectives. Table 2b shows the total lengths of river meeting their quality objectives. EC Freshwater Fish Directive (78/559/EEC) A total length of 1470 km of freshwater river is designated under the EC Freshwater Fish Directive. Of this, 504 km is designated as salmonid and 966 km is designated as cyprinid.
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