Analysis of national water pollution control policies: 1. A national network model

In order to study the national implications of federal water-pollution-control policies, the authors developed a water-pollution-network model. This model links both point and nonpoint sources of pollution at the county level of detail with a national network of major rivers, lakes, reservoirs, and bays. While the geographical scope of the model and existing data availability required make many simplifying assumptions, the model permits comprehensive analyses that are not possible with existing techniques. 27 references, 1 figure, 1 table.