The Book investigated; Human related activities, burning of fossil fuel, greenhouse gas emissions and construction activities that led to variability in rainfall, temperature and other climatic conditions; organizational inadequacies to manage uncertainties, projections and scenarios in climate change; financial constraints, lack of logical cost sharing in multipurpose dam projects resulting to food insecurity, deforestation, flooding, erosion induced gullies, unbalancing of the ecosystem, pollution of air, land and water, human suffering, loss of lives and properties at the south-eastern region, Anambra/Imo river basins. The objectives of the study were: to determine optimal returns under various projects such as: hydro power, water supply/solar power, irrigation/wind turbine, navigation, drainage/dredging, flood control structures, etc to develop a master plan for green revolution. The Book contributed to knowledge such that the Bayesian and Game applications in comparison of ten multi-purposes/objectives had added a new dimension in assessing and implementing the allocation of resources in a river basin development projects for optimal benefits of communities and the regions.