Skip to main content


Title: National marine baseline survey manual Report No NC/mar/006
Author: National Rivers Authority National Centre for Instrumentation and Marine Surveillance
Document Type: Monograph
Annotation: EA additional title info: national centre for instrumentation an marine surveillance
The NRA has a duty, under the 1991 Water Resources Act, to monitor controlled waters. Controlled waters include estuarine and coastal waters out as far as the three nautical mile limit. The coastal baseline survey was introduced in 1992, and extended nationally in 1993, as a means of meeting this objective. The surveys provide a means of collecting background levels of contaminants to provide a baseline of water quality in the coastal zone. These surveys have taken the form of simultaneous boat and airborne surveys in Spring, Summer and Autumn and a boat survey in Winter (when weather conditions render the aerial surveillance difficult), around the coast of England and Wales. The four NRA survey vessels (Water Guardian, Sea Vigil, Coastal Guardian and Vigilance) are used to perform the boat work and a chartered light aircraft used for the aerial surveillance work.
Publisher: National Rivers Authority
Publication Date: 1995
Publication Place: Bristol
Subject Keywords: Coastal watersEstuariesWater quality surveysAerial surveysBoatsSurveys
Geographic Keywords: EnglandWales
Extent: 22
Total file downloads: 288

Download PDF    Display PDF in separate tab