National Rivers Authority NRA

As Guardians of the Water Environment , the National Rivers Authority (NRA) has statutory duties and powers to protect the aquatic environment from... 

Crawshaw, T. Pre-Congress Workshop SETAC Effluent Toxicity Program, Implementation, Compliance and Enforcement National Rivers Authority (NRA) Worthing, West Sussex, UK, March 28, 1993. SETAC, Lissabon 1993. 

The Water Resources Act, 1991, which covers discharges into inland water ways. Consent from the National Rivers Authority (NRA) is needed for such discharges. 

The National Rivers Authority (NRA) enforces quality standards in surface waters. In order to ensure water quality, the NRA may prohibit the use of certain chemicals. The NRA can also establish Water Protection Zones , where certain activities are prohibited. 

The Environmental Agency - formerly the National River Authority (NRA) is responsible for the conservation of water resources in England and Wales. Their duties include monitoring and improving river quality. Rivers are classified according to their quality as shown in Table 22.1. 

National Rivers Authority, Toxic Blue-green Algae, Water Quality Series Report No. 2, NRA, 1990,... 

NRA (national RIVERS AUTHORITY) The National Rivers Authority were the body responsible for the management of water resources and the control of water pollution in England and Wales. They are now part of the Environment Agency. 

NRA (1992). Nitrate Reduction for Protection Zones The Role of Alternative Farming Systems. Elm Farm Research Centre, R D note 108. National Rivers Authority Bristol. 

CI. T. Cousins and C. D. Watts, Atmospheric Sources of Pollution Inputs of Trace Orqanics to Surface Waters, National Rivers Authority R D Report 20, NRA, Bristol, 1995. 

Butler, R., Johnson, I., Horn, K. and Paul, M. (1992) Discharge Control by Direct Toxicity Assessment (DTA) Evaluation of a Protocol by Case Studies, WRc Interim Report to the NRA, R D 049/9/W. National Rivers Authority, Bristol. 

NRA (National Rivers Authority) (1992) Summary of chemical data for Yorkshire rivers, 1990-1992. Available from NRA, Yorkshire. 

National Rivers Authority (1994) Leaching Tests for Assessment of Contaminated Land. Interim NRA Guidance R D Note 301. 

NRA 1989. Earthworks to landfill sites. National Rivers Authority, North-West Region. 

NRA. 1991. Policy and Practice for the Protection of Groundwater. National Rivers Authority, HMSO, London. 

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