| 51 | The NRA in business : annual review and summary accounts 1993-94 |
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| 52 | River quality in England and Wales : a report of the 1990 survey |
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| 53 | Applications Of Artificial Intelligence For The Biological Surveillance Of River Quality |
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| 54 | Enhancing the environment : 25 case studies from Thames Region |
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| 55 | Assessment of the water quality before, during and post commissioning of the interim Falmouth sewage treatment scheme - Report No. TWQ/98/01- May 1998 |
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| 56 | The Influence of Variations in Flow on General Quality Assessment of Rivers - Summary Document |
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| 57 | The Warwickshire Avon catchment management plan : consultation report summary (NRA Severn-Trent 44) |
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| 58 | Lower Colne catchment management plan for flood defence and the environment : third draft |
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| 59 | River corridor strategic overview feasibility study : a report to the National Rivers Authority |
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| 60 | River Stort : draft catchment management plan for flood defence and the environment : May 1991 |
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| 61 | Where to fish on the River Wye and its tributaries : a guide to day ticket facilities |
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| 62 | Integrated river corridor assessment : a pilot study of the rivers Wansbeck and North Tyne in Northumbria |
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| 63 | River Stour (2), Sudbury : report of a river corridor survey carried out for the National Rivers Authority, Anglian region |
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| 64 | Low flows and water resources : facts on the top 40 low flow rivers in England and Wales |
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| 65 | Freshwater migration of sea trout (Salmo trutta L.) in the river Tywi during 1988, 1989 and 1990 |
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| 66 | The Blythe/Cole/Bourne catchment management plan : first annual review : July 1994 to July 1995 (NRA Severn-Trent 48)
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| 67 | The Warwickshire Avon catchment management plan : first annual review : October 1994 - October 1995 (NRA Severn -Trent 45)
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| 68 | Report on the millennium chalk streams fly trends study : a survey carried out in 2000 among 365 fly fishermen, fishery owners, club secretaries and river keepers |
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| 69 | Local environment focus : local environmental issues in and around Nottingham, Derby, Newark-on-Trent, Gainsborough, Scunthorpe and Ilkeston. : Local Environment Agency Plan (LEAP) for the Lower Trent and erewash : 2nd annual review July 2002 |
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