Assessing the pollutional load from non-point sources: planning considerations and a description of an automated water-quality monitoring programme

The factors affecting non-point sources of pollution, including the effects of land use and topography on the nature and amount of contaminants are discussed, and facilities designed to monitor this form of pollution are described. The planning and instrumentation of the Washington County Project, located in Washington County, Wis. , are described, with details of the equipment employed, and the parameters selected for investigation. The costs of installation and operation of the water-quality monitoring system combined with flow control and gauging facilities are discussed.