National Water Harvesting and Storage Authority

Hifadhi Maji, Boresha Maisha

Flood Control

Flood control structures are designed to protect coastal and river-bank areas, including urban and agricultural communities, homes, and other economically valuable areas, and the people located within them. These structures are used to divert flows of water, by re-directing rivers, slowing natural changes in embankments and coastlines, or preventing inundation of vulnerable coastlines or floodplains. Dykes, spurs, levees, and seawalls often act as the first line of defense against overflowing rivers, floods, storm surges, and—in the longer term—rising seas. But flood control structures do not completely eliminate risk. Flooding may occur if the design water levels are exceeded. If poorly designed, constructed, operated or maintained, these structures can increase risk by providing a false sense of security and encouraging settlements or economic activity in hazard-prone areas

Moses Gitonga Ntiritu Works