| 6501 | Nene waterways partnership initiative : strategy consultation document |
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| 6502 | North West Norfolk catchment management plan : action plan : November 1995 |
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| 6503 | Ouse Washes : barrier banks improvements |
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| 6504 | Physical environment for river invertebrate communities : progress report |
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| 6505 | Planning for the rising tides - the Humber Estuary - consultation on managed realignment: information for the landowners and tenants - June 2002 |
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| 6506 | Water pollution incidents in England and Wales - 1992 : report of the National Rivers Authority |
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| 6507 | Poole Harbour and Purbeck catchment management plan : first annual review |
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| 6508 | Redgrave and Lopham Fens alleviation scheme : project appraisal report : version 1.0 |
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| 6509 | Report on alternative methods of river bank protection : Norfolk District |
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| 6510 | River quality survey GQA assessment 1998 : Dales area freshwater rivers and canals river reach classification summary 1990-9 |
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| 6511 | Summary report on blue-green algae toxin analysis, Toxicity Assessment and reporting to the Environment Agency, 1998 |
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| 6512 | Upper Ouse catchment management plan : consultation report summary : March 1996 |
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| 6513 | Notonecta viridis, |
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| 6514 | Rivers Swale, Ure and Ouse catchment management plan : final plan |
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| 6515 | Trent licensing policy review : executive summary report |
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| 6516 | Factual report on the boreholes and installation of standpipes for the combined investigations in connection with the East Ruston common SSSI Alleviation Scheme |
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| 6517 | The River Colne Estuary subtidal biological survey 1992 |
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| 6518 | The use of fertilizer-free buffer strips to protect dyke flora from nitrate pollution on Walland Marsh S.S.S.I |
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| 6519 | Effects of Electric Fishing on Fish - Technical Summary |
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| 6520 | Crayfish conservation (378/8/N) : interim report for 1993 |
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| 6521 | Assessment of the Trophic Status of Rivers using Macrophytes - supporting documentation for evaluation of the Mean Trophic Rank |
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| 6522 | Mesotrophic rivers in Anglian region : phase 1 June 1994 |
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| 6523 | Chemical Techniques Manual |
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| 6524 | Crangonyx pseudogracilis and Gammarus pulex |
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| 6525 | A report on the investigation into water contamination at Hauxton, Cambrigeshire |
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