Between the first and second workshops we developed the Cooum River Environmental Management Decision Support System (DSS) that coupled open source (free) versions of a GIS and a water quality simulation model. The DSS system simulated hydrology and water quality (a key indicator of the overall state of the Cooum system) and was parameterized by spatially referenced data about stormwater drainage, sewerage catchments, the city population, and slum areas, that were stored and managed by the GIS