Kerala Floods: Human Factors Drown State

Early August's heavy rainfall has caused significant flooding across Kerala, particularly impacting Kottayam and Pathanamthitta districts. As of August 5th, 26 lives were lost, and over 27,000 individuals sought refuge in approximately 460 relief camps. The severity of these flash floods is largely attributed to human-induced factors that have compromised the state's natural defenses against such events.

Studies reveal that rivers and water bodies have diminished carrying capacity due to extensive silt accumulation over the past decade, exacerbated by the 2018 floods. Landslides have further contributed to sediment buildup, obstructing water flow. Additionally, reservoirs managed by the state electricity board and irrigation department show a significant decrease in storage capacity due to sedimentation, with some dams losing nearly half their capacity over several decades.

The state's wetlands and paddy fields, crucial for absorbing rainfall, have drastically shrunk due to rapid urbanization and changes in land use. Paddy land decreased from 7.93 lakh hectares in 1979-80 to 1.80 lakh hectares in 2023-24. Wetlands also saw a substantial reduction. This loss of natural absorption areas has increased vulnerability to flash floods.

Furthermore, Kerala's dense network of concrete roads and paved surfaces accelerates stormwater runoff, channeling water rapidly into rivers and causing water levels to rise within hours. The government plans to address these issues by desilting rivers and reservoirs to restore their water-holding capacity. Decisions on sediment removal are expected soon, with sand mining from rivers also considered as a potential government revenue source, though past indiscriminate mining raised environmental concerns.