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501An investigation of ecological change in the rivers Kennet and Lambourn. Report for the period April 2000 - March 2001
502Investigation into the 1999 failure of the European Community bathing waters directive at Teignmouth Town Beach (2001)
503An assessment of cormorant depredation on stillwater coarse fish populations in the Lea and Colne valleys of the Thames catchment
504Evaluation of FRONTIERS accumulation forecasts in the NRA Thames and North West regions : final report of the Joint Met
505A review of the quality and status of the Suffolk and Essex estuaries and coastal waters : volume 2 : final draft
506The hydrogeological classification of superficial clay : the hydrogeological characterisation of glacial till and glacio-lacustrine sediments in Shropshire
507A desk study of the available information on wintering waterfowl feeding in the Wash, Lincolnshire and Norfolk
508A Study of the Composition of Collected Household Waste in the United Kingdom - with particular reference to packaging waste
509Tributyltin in the aquatic environment : final report to the National Rivers Authority September 1990 to September 1992
510A report on the strategic stock assessment survey of the River Esk catchment 1994 with particular reference to salmonids
511An investigation of ecological change in the rivers Kennet and Lambourn. Progress report for the period April 1999-March 2000
512Report on the quality of bathing waters in Hampshire, Sussex, Kent and the Isle of Wight : 1992 bathing season
513Guidance notes for local planning authorities on the methods of protecting the water environment through development plans
514Report on Grayling research and production in the Anglian region of the National Rivers Authority, December 1988 to April 1989
515The development of biomanipulation techniques and control of phosphorus release from sediments (475/1/A) : LIFE project : restoration of the Norfolk Broads
516The application of toxicity-based criteria for the regulatory control of wastewater dicharges Response compendium March 1997
517Rising groundwater levels in the chalk-basal sands aquifer of the Central London Basin. Progress report, March 1996
518Preliminary modelling of water storage and transfers in the Anglian region : supporting documentation for the regional water resources strategy May 1993
519Continuous water quality monitoring results collected from the river Torridge at Cockshilhay and Beam Bridge for the EU UWWTD
520Water quality objectives: procedures used by the NRA for the purpose of surface waters river ecosystem) (classification) regulations 1994
521Mercury, methylmercury and copper in the River Yare, Norfolk : summary of a report to the National Rivers Authority, Anglian Region
522Second interim report on the environmental impacts of the drought on Yorkshire's rivers April 1995 to April 1996
523Interim report on the environmental impacts of the drought on Yorkshire rivers April 1995 to April 1996
524A report on the 1992 strategic stock assessment survey of the upper Eden catchment with particular reference to salmonids
525Conservation and recreation : the Wye challenge : towards a management strategy for the River Wye : summary report (bilingual)