226 | An investigation of sewage on the beach at Porthcothan |
227 | The Test catchment southern : recommendations for statutory water quality objectives |
228 | The Worcestershire Stour catchment : recommendations for statutory water quality objectives |
229 | An assessment of river water quality in the River Kenn |
230 | Temporal variability in chlorophyll-a : concentrations in the coastal environment : final report |
231 | The quality of rivers and estuaries in Northumbria region 1990 |
232 | Estuarial migration of Atlantic salmon in the river Dee (North Wales) |
233 | The NRA in business : annual review and summary accounts 1993-94 |
234 | Cyanobacteria (blue-green algae) in the south west region 1989 |
235 | Toxic blue-green algae : a report by the National Rivers Authority |
236 | Investigation of salinity in the river Thurne catchment of North East Norfolk |
237 | Water quality investigations in the Newlyn river catchment |
238 | An assessment of water quality in the River Yarty catchment |
239 | Report on monitoring of environmental quality in the Severn Estuary |
240 | Artificial recharge to groundwater in the Otter valley |
241 | The Ely Ouse catchment management plan : final plan : January 1994 |
242 | Water quality in Anglian Region : the first five years |
243 | Investigation to determine the cause of the long-term BOD failure at Higher Weaver routine monitoring site (70532960) for 1995 and 1997 |
244 | Changes in the phosphorus content of the sediment of Esthwaite Water and water quality in response to a decreasing input of sewage-borne phosphorus |
245 | Water Quality and Freshwater Flow in the Thames Tideway in Relation to Salmon Migration, with particular reference to the effects of low flow in 1990 |
246 | Wimbleball 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 |
247 | The 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 |
248 | Tamar 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 |
249 | Investigation of the effects of sewage treatment works discharges on receiving waters in the Lowermoor Water Treatment Works supply area November 1989 |
250 | Report for Anglian Water, plc on the use of the Orwell Estuary mathematical model to derive long term consent limits for Cliff Quay STW |