Skip to main content


Title: General Quality Assessment (GQA) North Wessex Area 1994
Author: A. Gurney
Document Type: Monograph
This report contains the results of applying the chemical GQA Scheme to data collected during 1992 to 1994 from the freshwater stretches of rivers in North Wessex Area. These results are referred to as the 1994 assessment. This assessment uses all routine samples taken between 1 January 1992 and 31 December 1994 as part of the annual GQA monitoring programmes. It is calculated from measurements of the concentrations of biochemical oxygen demand, total ammonia and dissolved oxygen.
Publisher: National Rivers Authority
Publication Date: 1995
Publication Place: Exeter
Subject Keywords: Chemical monitoringPollutant loadTotal ammoniacal nitrogenDissolved oxygenRiversSurveysData
Geographic Keywords: ParrettTone (Somerset)Yeo (South Somerset)BrueAxe (Bristol Channel)Bristol AvonSouth and West Somerset catchmentSomersetBristol Avon and North Somerset Streams catchment
Extent: 35
Total file downloads: 294

Download PDF    Display PDF in separate tab