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226The Test catchment southern : recommendations for statutory water quality objectives
227The Worcestershire Stour catchment : recommendations for statutory water quality objectives
228An assessment of river water quality in the River Kenn
229Temporal variability in chlorophyll-a : concentrations in the coastal environment : final report
230The quality of rivers and estuaries in Northumbria region 1990
231Estuarial migration of Atlantic salmon in the river Dee (North Wales)
232The NRA in business : annual review and summary accounts 1993-94
233Cyanobacteria (blue-green algae) in the south west region 1989
234Toxic blue-green algae : a report by the National Rivers Authority
235Investigation of salinity in the river Thurne catchment of North East Norfolk
236Water quality investigations in the Newlyn river catchment
237An assessment of water quality in the River Yarty catchment
238Report on monitoring of environmental quality in the Severn Estuary
239Artificial recharge to groundwater in the Otter valley
240The Ely Ouse catchment management plan : final plan : January 1994
241Water quality in Anglian Region : the first five years
242Investigation to determine the cause of the long-term BOD failure at Higher Weaver routine monitoring site (70532960) for 1995 and 1997
243Changes in the phosphorus content of the sediment of Esthwaite Water and water quality in response to a decreasing input of sewage-borne phosphorus
244Water Quality and Freshwater Flow in the Thames Tideway in Relation to Salmon Migration, with particular reference to the effects of low flow in 1990
245Wimbleball pumped storage scheme : review of environmental statement (appendix B3) : implications for water quality in Wimbleball Reservoir, the River Exe (non QUASAR) parameters) and the Exe estuary
246The quality of rivers and canals in England and Wales (1990 to 1992) : as assessed by a new general quality assessment scheme : report of the National Rivers Authority
247Tamar Lakes project 2001 : initial assessment of nutrient data to identify pollution sources, assess the effect of Tamar Lakes on the downstream water quality and to recommend future monitoring requirements
248Investigation of the effects of sewage treatment works discharges on receiving waters in the Lowermoor Water Treatment Works supply area November 1989
249Report for Anglian Water, plc on the use of the Orwell Estuary mathematical model to derive long term consent limits for Cliff Quay STW
250Assessment of the water quality before, during and post commissioning of the interim Falmouth sewage treatment scheme - Report No. TWQ/98/02- September 1998