Overview
Between June and 25 September 2026, Odisha recorded 1,453 mm of rainfall – a 29% excess over the long‑period average. The deluge was driven by an unusually large number of atmospheric systems, eleven of which formed over the Bay of Bengal, the last making landfall near Kalingapatnam on 23 September. The IMD had projected only 90% of the average rainfall because an El Niño was expected to develop. Instead, successive systems repeatedly drenched the state, leaving little time for recovery.
Key Developments
- By 30 July, 5.2 lakh people were affected; by 27 August the figure rose to 13.5 lakh.
- More than 60 locations received over 100 mm of rain in a 24‑hour period.
- Runoff has swollen the Baitarani, Budhabalanga, Jalaka and Rushikulya rivers, threatening downstream districts such as Bhadrak and Jajpur.
- Urban water‑logging reported in Berhampur; major highways and rail links disrupted.
- The state’s long‑standing zero‑casualty policy faces its toughest test yet.
Important Facts
1. The CAG flagged deficiencies in drainage design and maintenance, which the current monsoon is exposing.
2. A study by Odisha University of Agriculture and Technology (May 2026) using data from 1901‑2020 showed an increase in maximum one‑day and five‑day rainfall bursts, even as the number of heavy‑rain days slightly declined.
3. The state’s topography amplifies risk: the southern highlands are prone to landslides, while the coastal deltaic plain has a low gradient, slowing water outflow to the sea.
Exam Relevance
• Disaster Management: Odisha’s experience illustrates the challenges of translating policy (zero‑casualty) into practice, a frequent GS‑III question.
• Climate Change & Monsoon Dynamics: The link between intensified, protracted monsoon events and global phenomena like El Niño underscores the need for climate‑adaptation strategies, relevant for GS‑III and GS‑IV.
• Infrastructure & Governance: The CAG’s audit findings on drainage highlight the importance of robust public‑works planning, a typical GS‑III governance issue.
• Geography: Understanding river basins like the Baitarani and deltaic formations aids in answering questions on flood‑prone regions (GS‑I).
Way Forward
- Strengthen real‑time monitoring by the IMD and integrate data with local disaster‑response units.
- Accelerate drainage upgrades identified by the CAG, focusing on low‑gradient coastal zones.
- Adopt a climate‑resilient urban planning model that includes flood‑plain zoning, rain‑water harvesting and early‑warning systems for cities like Berhampur.
- Re‑evaluate the zero‑casualty policy to incorporate multi‑hazard risk assessments rather than isolated events.
- Promote community‑based preparedness, especially in hilly districts prone to landslides, to reduce vulnerability.
In sum, Odisha’s 2026 monsoon underscores the need for integrated climate, infrastructure and governance responses – a critical study area for UPSC aspirants.