51 | Report on the 1995 stock assessment of the Douglas catchment |
52 | The distribution of nutrients and phytoplankton in the North-East Irish Sea |
53 | Water resources for the future : a strategy for the West Midlands |
54 | The development of new techniques for the monitoring of ammonia in water |
55 | Water resources for the future : a strategy for the West Midlands |
56 | The regulation of fish farming by the National Rivers Authority |
57 | Investigation into the cause of high pH in the Budleigh Brook |
58 | Contaminated land and the water environment : report of the National Rivers Authority |
59 | Abandoned mines and the water environment : report of the National Rivers Authority |
60 | Hysim model : modelling the flows of the River Deben |
61 | An investigation into the effect of Farnham STW on the River Wey |
62 | The effect of the voluntary initiative on water quality |
63 | Economic elements of the Environment Agency's implementation of the Water Framework Directive |
64 | An investigation into the effects of Woking STW on the River Wey |
65 | A good deal for water : the view of the Environment Agency, the Countryside Council for Wales and English Nature on the priorities for the environment that require action by water companies |
66 | Investigations into the contribution of Marlborough STW to the non-compliance of Salcombe South Sands with the EC bathing waters directive |
67 | Investigation into the probable cause of the 1999 failure of the EC bathing waters directive at Seaton (Devon) beach (70210103) (2000) |
68 | The NRA severn-thames transfer project: an assessment of the effect of mixing of source waters on the chemical composition |
69 | The Delineation and Characterisation of Groundwater Bodies to Meet the Requirements of the EU Water Framework Directive |
70 | The National Rivers Authority's response to the sixteenth report of the Royal Commission on Environmental Pollution on freshwater quality |
71 | Assessment of the performance of the BMWP scoring system against biological targets and the determination of significant change |
72 | Assessment of the impact of discharges from Meldon Quarry on the water quality of the West Okement River |
73 | Investigations into the extent of saline water ingress into the River Parrett and the River Tone : February, March 1994 |
74 | A desk study to assess the compliance of the River Fowey with the EC Surface Water Abstraction Directive : June 1997 COR/97/024 |
75 | Managing the drought and water resources : key issues statements approved by the board of the NRA June 1992 |