401 | The Impact Of Discarded Fishing Line And Tackle On Mute Swans - Phase 1 |
402 | Effectiveness of eutrophication control by phosphorus reduction: development of the INCA-P model |
403 | An investigation of the Madford River pollution incident of 29 July 1989 : November 1989 |
404 | Monitoring the effects of a combined sewer overflow discharge to a small watercourse in South Wales |
405 | Time of travel study on the River Wandle under two different flow conditions |
406 | Biological river quality 1995 according to the general quality (GQA) scheme [map] : scale 1 : 750 000 |
407 | Lower Lee fish mortalities associated with rainfall : including the event of 7/8th September 1993 |
408 | Integrated river corridor assessment : a pilot study of the rivers Wansbeck and North Tyne in Northumbria |
409 | River Teign corridor survey : prepared by Ecologue for the National Rivers Authority (South West Region) |
410 | River Stort : draft catchment management plan for flood defence and the environment : May 1991 |
411 | Impact assessment of scour valve test at Roadford Reservoir on water quality of the River Lyd |
412 | The Blythe/Cole/Bourne catchment management plan : first annual review : July 1994 to July 1995 (NRA Severn-Trent 48)
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413 | Micro low flows average and low flows estimation in the SW region : validation of regional version 1.3 software |
414 | Mercury and methylmercury in the river Yare, Norfolk (1986 - 1992) (OI/420/8/A annex) : annex to main report |
415 | Audit of priority species of rivers and wetlands : riverine and wetland molluscs in South Hampshire and the Isle of Wight |
416 | Audit of priority species of rivers and wetlands : kingfisher Alcedo atthis in South Hampshire and the Isle of Wight |
417 | Audit of priority species of rivers and wetlands : Marsh Fritillary in South Hampshire and the Isle of Wight |
418 | Audit of priority species of rivers and wetlands : Bittern Botaurus stellaris in South Hampshire and the Isle of Wight |
419 | Audit of priority species of rivers and wetlands : white-clawed crayfish Austropotambius pallipes in South Hampshire and the Isle of Wight |
420 | Investigation into failures of the River Dalch from Canns Mill Bridge to below Lapford sewage treatment works (2001) |
421 | The development of macroinvertebrate keys using TWINSPAN classification : a manual for NRA biologists (001/10/W) : draft final report |
422 | Micro low flows average and low flow estimation in the SW region : validation of version 1.2 software |
423 | River Stour (2), Sudbury : report of a river corridor survey carried out for the National Rivers Authority, Anglian region |
424 | River Wissey investigations : linking hydrology and ecology : the basis for in-river flow management. Final Draft (OI/526/ ) |
425 | River Glen : river channel assessment : annex B : an analysis of invertebrate records for the River Glen 1976-1991 |