51 | An investigation into the bacteriological levels in the River Seaton |
52 | An investigation into the effects of Woking STW on the River Wey |
53 | Investigation into the cause of high pH in the Budleigh Brook |
54 | River Darent : strategy for the enhancement of the River Darent, Kent |
55 | The Environment Agency's state of the environment report for Thames Region |
56 | The results of fish telemetry trails in the river Tawe estuary, 1991 |
57 | The extent of phosphorus release in the Norfolk Broads |
58 | Preventing the spread of crayfish plague in the South West |
59 | An investigation into the effect of Farnham STW on the River Wey |
60 | The restoration of the River Ver : the success story of a collaborative project between the National Rivers Authority, Three Valleys Water and the Ver Valley Society |
61 | The control of phosphorus in the catchment of the rivers Ant and Bure : interim report for period January - December 1992 |
62 | A desk study to assess the compliance of the River Fowey with the EC Surface Water Abstraction Directive : June 1997 COR/97/024 |
63 | A litter assessment of two major tributaries of the Taff, the Cynon and the Rhondda : surveyed March - April 1990 |
64 | Investigation into the probable cause of the 1999 failure of the EC bathing waters directive at Seaton (Devon) beach (70210103) (2000) |
65 | The impact of ferruginous minewater break-outs on the environmental quality of the Rivers Rhymney, Ebbw and Sirhowy : summary report |
66 | Investigations into the extent of saline water ingress into the River Parrett and the River Tone : February, March 1994 |
67 | Assessment of the impact of discharges from Meldon Quarry on the water quality of the West Okement River |
68 | The release of ammonium and phosphorus from the sediments of the River Ant and Barton Broad : interim report |
69 | Stock assessment review on the River Teign |
70 | Pollution control on the River Alt |
71 | Fishery survey of the Congresbury Yeo, 1994 |
72 | Flood defences : the Lower Witham strategy |
73 | The River Ogmore action plan support document |
74 | Canoeist guide to the River Severn |
75 | Rivers of the Isle of Wight |