| 501 | Chemical river quality 1993-1995 according to the general quality assessment (GQA) scheme [map] : scale 1 : 750 000 |
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| 502 | The development of macroinvertebrate keys using TWINSPAN classification : a manual for NRA biologists (001/10/W) : draft final report |
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| 503 | An investigation into the presence of high levels of cadmium in sea-water samples from Mounts Bay, Cornwall |
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| 504 | Water quality modelling in the Environment Agency (Report no.28) : present practice and future challenges : Water Quality Modelling Group workshop proceedings |
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| 505 | Local Environment Agency plan for the West Midlands Tame, 2nd annual review, July 2001 : local environment focus |
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| 506 | East Devon public water supply strategy : the existence and potential use in yield analysis of historic flow records |
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| 507 | The use of constructed wetlands to ameliorate metal-rich mine waters. Stage 1 : review of existing literature |
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| 508 | An investigation into possible causes of poor water quality at Nymphayes Bridge (R30D009) on the Gissage Lake |
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| 509 | Analogue (nutrient), YSI, turbidity and stage data for the Wensum Demontration Test Catchment's monitoring kiosk E in 2014 |
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| 510 | Analogue (nutrient), YSI, turbidity and stage data for the Wensum Demontration Test Catchment's monitoring kiosk E in 2012 |
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| 511 | Quality of Bathing Waters in Hampshire, Sussex, Kent and the Isle of Wight : 1993 Bathing Season : NRA Report DL/bw4/94 |
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| 512 | Analogue (nutrient), YSI, turbidity and stage data for the Wensum Demontration Test Catchment's monitoring kiosk F in 2012 |
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| 513 | The protection of East Anglian wetlands Phase 2 : review of BGS draft report. February 1995 (OI 558) |
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| 514 | The use of constructed wetlands to ameliorate metal-rich mine waters. Stage 1 : study of natural wetlands |
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| 515 | River Wissey investigations : linking hydrology and ecology : the basis for in-river flow management. Final Draft (OI/526/ ) |
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| 516 | Strategic Land Use Planning In Europe And Usa: Review Of Best Practice For The Environment Agency (Vol 1 Overview And Recommendations) |
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| 517 | Gorran Haven (Little Perhaver) EC bathing waters directive failure 1996 : an investigation of the Gorran Haven Stream |
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| 518 | NRA guidance on the acceptable leachable values for contaminated material to be deposited in Upper Tame catchment |
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| 519 | Further monitoring of the impact of Crown Dale waste water treatment works final effluent on water quality |
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| 520 | Analogue (nutrient), YSI, turbidity and stage data for the Wensum Demontration Test Catchment's monitoring kiosk E in 2011 |
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| 521 | A review of the industrial uses of continuous monitoring systems : incineration processes : a report produced for NCCA and ETSU by Entec |
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| 522 | Eutrophication in controlled waters in the Warwickshire Avon catchment (final report). Vol 1 : report and executive summary |
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| 523 | Analogue (nutrient), YSI, turbidity and stage data for the Wensum Demontration Test Catchment's monitoring kiosk E in 2013 |
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| 524 | The FBA-Welsh Water simulation model of phytoplankton dynamics in flushed systems. Authentication in a coastal lagoon |
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| 525 | Low flows and water resources : facts on the top 40 low flow rivers in England and Wales |
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