| 51 | The Don, Rother and Dearne catchment (river factfiles) |
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| 52 | Impact assessment of acidic and metalliferous pollution in the Fowley Stream |
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| 53 | Groundwater flooding in the Thames region : winter 2000/01 |
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| 54 | The Swale, Ure and Ouse catchment (river factfiles) |
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| 55 | Habitat preferences of the bullhead (Cottus gobio) in some Norfolk rivers |
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| 56 | Impact of reservoir construction construction on the Bruckland Stream |
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| 57 | Review of fishery regulations on the Rivers Taw and Torridge |
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| 58 | Algal blooms in the Lower Tees- Perspectives and prospects
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| 59 | Eel and elver studies in the Severn : interim report (256/6/ST) |
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| 60 | Macroinvertebrates of the River Nar : Great Ouse catchment : draft report |
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| 61 | A report on the River Chew at Chewton Mendip, 6th August 1992 |
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| 62 | The Mersey Estuary 1992 surveys : summary of results |
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| 63 | The environmental requirements of adult Atlantic salmon (Salmo salar L.) during their upstream migration in the Northwest Miramichi River, New Brunswick. Draft. |
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| 64 | A macroinvertebrate survey of the Releath stream and associated tributaries within the vicinity of Trevethan Farm : final draft report - Water Quality section, Cornwall area |
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| 65 | Datchet, Wraysbury, Staines and Chertsey flood study : aquatic biology. Part 2 : a survey of the wetland vegetation and aquatric macroinvertebrates of the Abbey River and Chertsey Bourne |
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| 66 | Investigation of the effects of sewage treatment works discharges on receiving waters in the Lowermoor Water Treatment Works supply area November 1989 |
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| 67 | Decision document on the review of authorisations for British Nuclear Fuels plc to dispose of radioactive wastes from the Springfield nuclear site : main document |
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| 68 | Interim review of drought management experience in the North West Region of the National Rivers Authority. lessons learned (29th June 1995 - March 31st 1996) |
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| 69 | An investigation to determine if South Molton STW is the cause of elevated copper and zinc concentrations downstream in the River Mole [DEV/E/18/95] |
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| 70 | Review of Literature on the Effect on Aquatic Communities of Particulate Copper in River Systems
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| 71 | Policy and practice for the protection of groundwater : North West region : 2nd edition, 1995 |
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| 72 | Heavy metal contaminants in fish caught from the Mersey Estuary and inshore Liverpool Bay |
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| 73 | Monitoring of the River Burn upstream and downstream of Burnham Market sewage treatment works 1999 |
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| 74 | Less sensitive areas and candidate high natural dispersion areas in the North West region |
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| 75 | Investigation into the frequency of storm overflow operation at Bradworthy sewage treatment works (1996) |
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