This paper describes the impacts of unplanned urban expansion and land surface change in the city of Bamenda in Cameroon, the underlying causes and the ecological and social implications. This expansion has placed great stress on forest, land and water ecosystems. Much of the city’s rapid growth in population has been accommodated in informal settlements on steep slopes and flood plains, with l...

This study adopts rainwater harvesting systems (RWHS) into a stormwater runoff management model (SWMM) for the spatial design of capacities and quantities of rain barrel for urban flood mitigation. A simulation-optimization model is proposed for effectively identifying the optimal design. First of all, we particularly classified the characteristic zonal subregions for spatial design by using fu...

Pluvial or surface flooding can cause significant damage and disruption as it often affects highly urbanised areas. Therefore it is essential to accurately identify consequences and assess the risks associated with such phenomena. The aim of this study is to present the results and investigate the applicability of a qualitative flood risk assessment methodology in urban areas. This methodology ...

This paper presents a cross-disciplinary framework for assessment of climate change adaptation to increased precipitation extremes considering pluvial flood risk as well as additional environmental services provided by some of the adaptation options. The ability of adaptation alternatives to cope with extreme rainfalls is evaluated using a quantitative flood risk approach based on urban inundat...

In order to implement the national green development concept and water quality improvement strategy, independent drainage companies have been set up in recent years deal with heavy rain pollution. meet higher demand of Environmental monitoring regulation, built their own testing laboratories. this paper, through planning, design construction newly-built urban laboratory, from overall ideas, con...

Poor drainage of urban storm water can lead to urban inundation which presents a risk to people and property. Previous research has presented various measures to prevent and reduce urban flooding and these measures can be classified into costly but effective structural measures, and economical but less effective non-structural measures. This study suggests a new approach to reduce urban floodin...

I n the cities of the developing world, the urban poor often inhabit marginal land that has less commercial value but is the only available land where they can afford to live. This includes land that is poorly drained and floods frequently, or on steep hillsides that are prone to landslides. The benefits of living nearer sources of employment and urban services usually outweigh the disadvantage...