501 | Distribution of Macroinvertebrates in English and Welsh Rivers based on the 1995 Survey |
502 | The disposal of sheep dip waste (R and D Report 11) : effects on water quality |
503 | Routine laboratory water sample data for the Wensum Demonstration Test Catchment's monitoring kiosk F |
504 | Criteria for WFD Groundwater Good 'Quantitative Status' and a framework for the assessment of groundwater abstractions |
505 | Quantification of the relationship between effluent quality and biological quality : interim report for stage 1 |
506 | Bathing water quality in England and Wales in 1995 : report of the National Rivers Authority |
507 | ISCO automatic water sample data for the Wensum Demonstration Test Catchment's Kiosk M |
508 | YSI, turbidity and discharge data for the Wensum Demonstration Test Catchment's monitoring kiosk M in 2014 |
509 | YSI, turbidity and stage data for the Wensum Demonstration Test Catchment's monitoring kiosk A in 2012 |
510 | Devon area internal report - further investigations into pipe discharges in the Lower Teign estuary |
511 | Alleviation of low flow studies : the River Avon and its tributaries near Malmesbury : towards a solution |
512 | A report on water quality issues within the Midford Brook catchment - June 1996 |
513 | Investigation into the frequency of storm overflow operation at Bradworthy sewage treatment works (1996) |
514 | Report on the By Brook low flow investigations : October 2001 : volume 2 : (figures, maps and appendices) |
515 | Bathing water quality in England and Wales in 1993 : report of the National Rivers Authority |
516 | Water pollution incidents in England and Wales - 1993 : report of the National Rivers Authority |
517 | The Wandle, Beverley Brook, Hogsmill catchment management plan : consultation report summary : November 1994 |
518 | The distribution of PCDDS and PCDFS in surface freshwater systems 2nd Interim Progress Report - February 1993 |
519 | A study to investigate and propose remedies for river quality problems in the Madford catchment |
520 | Regional river quality monitoring and surveillance : results of the 1990/1991 biological survey : draft report |
521 | Impact assessment of Meldon quarry on water quality in the West Okement river |
522 | R and D Strategy to Support Implementation of the Water Framework Directive - Preliminary Scoping Report |
523 | The government's policy for a public regulatory body in a privatised water industry |
524 | Less sensitive areas and candidate high natural dispersion areas in the North West region |
525 | Water pollution incidents in England and Wales - 1990 : report of the National Rivers Authority |