| 251 | Macrophyte status of the Rivers Test and Itchen - Hampshire : summary report - October 1998 |
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| 252 | Nutrient export modelling on the River Bure, Norfolk : progress report 2 : June-July 1995 |
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| 253 | Linking hydrology and ecology : River Wissey : Annex B aquatic macrophytes of the River Wissey |
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| 254 | An environmental assessment of mercury in mussels (Mytilus edulis L.) in the Mersey Estuary : final report |
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| 255 | Heavy metal contaminants in fish caught from the Mersey Estuary and inshore Liverpool Bay |
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| 256 | Devon area internal report - measurement of dissolved oxygen levels in the Dart estuary - March 1996 |
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| 257 | Lower Lee fish mortalities associated with rainfall : including the event of 7/8th September 1993 |
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| 258 | Impact assessment of scour valve test at Roadford Reservoir on water quality of the River Lyd |
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| 259 | An investigation into the presence of high levels of cadmium in sea-water samples from Mounts Bay, Cornwall |
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| 260 | Local Environment Agency plan for the West Midlands Tame, 2nd annual review, July 2001 : local environment focus |
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| 261 | Further monitoring of the impact of Crown Dale waste water treatment works final effluent on water quality |
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| 262 | Mercury and methylmercury in the river Yare, Norfolk (1986 - 1992) (OI/420/8/A annex) : annex to main report |
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| 263 | Audit of priority species of rivers and wetlands : Bittern Botaurus stellaris in South Hampshire and the Isle of Wight |
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| 264 | River Wissey investigations : linking hydrology and ecology : the basis for in-river flow management. Final Draft (OI/526/ ) |
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| 265 | River Glen : river channel assessment : annex B : an analysis of invertebrate records for the River Glen 1976-1991 |
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| 266 | River Glen : river channel assessment : annex C : an assessment of low flow characteristics of the River Glen, Lincolnshire |
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| 267 | Analysis of natural and polluted river communities in Great Britain- Progress report for the period January-December 1987 |
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| 268 | The protection of East Anglian wetlands Phase 2 : review of BGS draft report. February 1995 (OI 558) |
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| 269 | Audit of priority species of rivers and wetlands : Southern Damselfly Coenagrion mercuriale in South Hampshire and the Isle of Wight |
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| 270 | Environmental assessment of Denver MRF : impact of freshwater flow on water quality of the Great Ouse estuary : draft working paper 3 |
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| 271 | Eutrophication in controlled waters in the Warwickshire Avon catchment (final report). Vol 1 : report and executive summary |
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| 272 | An investigation into possible causes of poor water quality at Blakewell Bridge (R30A001) on the Bradiford Water |
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| 273 | An investigation into possible causes of poor water quality at Nymphayes Bridge (R30D009) on the Gissage Lake |
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| 274 | Torridge data report : biological monitoring of organic inputs to the study catchments using rapid biological assessment keys |
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| 275 | Gorran Haven (Little Perhaver) EC bathing waters directive failure 1996 : an investigation of the Gorran Haven Stream |
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