Extreme Weather and Flood Management

The heavy rains and subsequent flooding in Andhra Pradesh and Telangana during the 2024 monsoon season highlight the critical intersection between climate change and governance. Here are the essential details:

• Extreme Rainfall Patterns: In 2024, Andhra Pradesh experienced a significant weather event, receiving 27% of its annual rainfall within just two days. Notably, Vizianagaram reported a 46% increase in rainfall, with certain areas experiencing up to 90% more precipitation than average.

• Impact on Water Management Systems: The shifting behavior of monsoon patterns has imposed strain on existing reservoir and barrage systems, which are not designed for such abrupt and concentrated rainfall. For instance, during the peak of the season, the Srisailam and Nagarjuna Sagar reservoirs were nearly full, at 94% and 96% capacity respectively, leaving minimal room for additional inflow.

• Failure of Infrastructure: The extreme rainfall revealed vulnerabilities in infrastructure management. An instance occurred when the Budameru rivulet, which has a capacity of 7,000 cusecs, experienced a flow of 35,000 cusecs, resulting in flooding in Vijayawada. Infrastructure issues, such as a damaged gate at the Prakasam Barrage that remained unrepaired, exacerbated the flooding.

• Consequences of Poor Urban Planning: Urban flooding was intensified by poorly maintained drainage systems and encroachments on stormwater channels. The inability to absorb water effectively due to concrete surfaces and partially desilted drains indicates a need for improved urban planning prioritizing drainage networks.

• Disaster Management Response: The disaster management frameworks in both states are recognized for their maturity and effectiveness in saving lives. However, they lack the agility to implement proactive measures to mitigate risk. For example, despite various allocations towards immediate relief efforts (such as Telangana’s recent release of ₹1 crore per district), overdue infrastructure projects, including strengthening floodbanks and completing diversion channels, remain unfinished.

• Historical Context of Flooding: The continued occurrence of extreme rainfall in 2024 and 2025, particularly during late August and early September, has regularly stressed the Krishna and Godavari river systems, leading to protests concerning incomplete works on the Budameru.

• Need for Strategic Management: The article emphasizes that while extreme weather cannot be prevented, its adverse outcomes can be managed better through forward-thinking strategies such as:

  • Integrating real-time hydrological modeling into reservoir management to create optimal flood cushions.
  • Prioritizing the establishment and maintenance of adequate drainage infrastructure.
  • Ensuring continuous upkeep and funding for floodbanks and sluices that are resilient to political cycles.

• Caution Against Complacency: Both states risk falling into a state of fatalism by attributing flooding solely to extraordinary rain events without pursuing necessary reform in water management and urban infrastructure maintenance.

In conclusion, the governments of Andhra Pradesh and Telangana must take proactive measures in flood infrastructure management alongside updating urban planning protocols to respond effectively to shifts in monsoon patterns and reduce future risks of flooding.