... developers. Land-use zoning directly affects river and water resources. • Forestry Department Responsibility to manage state gazetted forests, peat wetlands and mangrove forests as well ... negative overall trend (deteriorated) for the period 198 8-1 994. The overall water quality index, measured for its physical, chemical and biological characteristics in form of turbidity, salinity, temperature, ... the data collection but the format was changed from river to basin-based reporting, depriving inter-period comparisons. This time around, the DOE covered 931 water-monitoring stations which...