What is areal flood?

Areal flooding, also known as urban flooding, is the inundation of low-lying areas caused by excessive rainfall or the overflow of rivers, streams, or other bodies of water. This type of flooding typically occurs in developed or urban areas where there is limited natural drainage and a high amount of impervious surfaces such as pavement and buildings.

Areal flooding can lead to the rapid accumulation of water in streets, parking lots, and residential areas, causing property damage, traffic disruptions, and potentially endangering the lives of residents. It can also result in water contamination, infrastructure damage, and increased risk of waterborne diseases.

Preventing areal flooding requires effective urban planning, infrastructure improvements, and proper stormwater management practices. This can include creating green spaces, building retention ponds, installing storm drains, and maintaining waterways to ensure proper drainage during heavy rainfall events. Additionally, early warning systems and emergency preparedness plans can help mitigate the impact of areal flooding and protect communities at risk.