| 51 | Guidelines for river corridor surveys in the NRA : February 1992. draft 3 |
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| 52 | Distribution of Azolla in the Great Ouse catchment |
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| 53 | 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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| 54 | The Influence of Variations in Flow on General Quality Assessment of Rivers - Summary Document |
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| 55 | River Teign corridor survey : prepared by Ecologue for the National Rivers Authority (South West Region) |
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| 56 | Integrated river corridor assessment : a pilot study of the rivers Wansbeck and North Tyne in Northumbria |
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| 57 | Where to fish on the River Wye and its tributaries : a guide to day ticket facilities |
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| 58 | The Warwickshire Avon catchment management plan : consultation report summary (NRA Severn-Trent 44) |
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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 | River Stour (2), Sudbury : report of a river corridor survey carried out for the National Rivers Authority, Anglian region |
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| 62 | Low flows and water resources : facts on the top 40 low flow rivers in England and Wales |
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| 63 | River Lemon corridor survey : a report prepared by Ecologue for the National Rivers Authority (South West Region) |
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| 64 | An investigation to determine if Deep Moor Landfill Site is causing an impact downstream in the Peagham Stream |
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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 Warwickshire Avon catchment management plan : first annual review : October 1994 - October 1995 (NRA Severn -Trent 45)
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| 67 | Investigation into failures of the River Dalch from Canns Mill Bridge to below Lapford sewage treatment works (2001) |
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| 68 | River Bovey and Bovey minor tributaries corridor survey : October-November 1990 : a report prepared for the National Rivers Authority (South West Region) |
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| 69 | 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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