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51Investigation of the impact on water quality of the SWW Teign estuary sewerage trenching activity
52Biological investigation into the impact of the storm overflow at Middle Marwood Sewage Treatment Works
53An investigation into the water quality of the River Waldon during wet weather
54Investigation into the 1999 failure of the European Community bathing waters directive at Beer beach (2001)
55The Natural (Baseline) Quality Of Groundwaters In England And Wales - The Chalk Of Lincolnshire;
56Fish and the Ecological Assessment of Lakes and Rivers for the Water Framework Directive
57Technical Summary - Appraisal of the Impact of Multiple Retailers Quality Assurance Schemes on the Environment
58Ecological effects of discharges from watercress farms on the chalk-streams of the NRA Wessex Region
59Investigate the feasibility of applying quality methods and standards within the water resources function.
60Evaluation of the effectiveness of the Water Fringe Option Scheme on Environmental Quality
61Riverside litter : results of the 1990 campaign and a strategy for the future
62Swords water quality study - phase 1 : modelling the water quality of the River Thames
63Further surveys to elucidate the distribution of the fine-lined pea mussel Pisidium tenuilineatum Stelfox, 1918
64Biological assessment of the effects of Ivybridge Sewage Treatment Works on the River Erme
65The impact of land use on salmonids (Report 30) : a study of the River Torridge catchment
66A Status Report on the Direct Oxygenation of the Tywi Estuary - October 1989
67An investigation into the effects of Alton sewage works on the River Wey North
68Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon
69Report for Anglian Water, NRA Unit on the uses of the Orwell and the Stour Estuaries and the use of the mathematical model to derive long term consent limits for all inputs to Orwell Estuary
70Implementation of the EC freshwater fish directive : water quality requirements for the support of fish life : report of the National Rivers Authority
71The effects of water resources management on the rivers Bure, Wensum and Nar in North Norfolk : Final project report to the National Rivers Authority. July 1994
72The effects of ammonia in discharges from Hogsmill Valley sewage treatment works on the water quality of the River Thames at Teddington
73Assessment of Ivybridge mobile monitoring station and investigation of the water quality of the River Erme and the effect of Ivybridge Sewage Treatment works final effluent
74Investigations into the status of fisheries, biological and water quality in the River Pelenna catchment, prior to the treatment of discharges from abandoned coal mines : PL/EAW/95/3
75Meiofaunal assemblages of the Thames Estuary, April 1989-March 1990 : modules I-III : a study of the meiofaunal communities present in sediment samples collected by the National Rivers Authority, Thames Region