Pluvial flood Hazard level: Medium ?

Pluvial floods, also known as surface water or urban floods, occur when intense rainfall exceeds the capacity of drainage systems to absorb or channel water away, causing water to accumulate on the ground surface. This hazard is particularly acute in urban areas with extensive impervious surfaces that prevent water infiltration. The severity depends on rainfall intensity, drainage infrastructure capacity, topography, and land use patterns, with low-lying areas and inadequate drainage systems most vulnerable.

In the area you have selected (Lesotho) urban flood hazard is classified as medium based on modeled flood information currently available to this tool. This means that there is approximately 1% chance per year that potentially damaging and life-threatening urban floods occur (about 10% chance in the coming 10 years). Risk studies, project planning decisions, project design, and construction methods must take into account the level of urban flood hazard.

For hazard management recommendations, see documentation.