Thirteen Major Indian Reservoirs Fall Below 50% Storage Capacity in May 2026

Key Facts

• By 14 May 2026, thirteen major reservoirs in India fell below 50% of normal storage capacity.
• The Central Water Commission monitors 166 major reservoirs nationwide across various river basins.
• Total live storage in these reservoirs declined from 71.082 billion cubic meters on 30 April 2026 to 63.232 billion cubic meters (34.45% of total capacity) on 14 May 2026.
• Notable reservoirs below 50% include Chandan Dam (Jharkhand, 0.00% storage on 4 May 2026), Khandong (Assam), and Priyadarshini Jurala (Telangana).
• Mettur Dam in Tamil Nadu was below its critical storage threshold (79.165 feet) on 17 May 2026, which is significant for irrigation of crops like the Kuruvai paddy.
• The southern region had 36 reservoirs below 40% storage as of 5 May 2026, the highest among all regions.
• Reservoir levels in Assam, Goa, Karnataka, Kerala, Madhya Pradesh, Tamil Nadu, Tripura, and West Bengal were lower compared to the same period in the previous year.

Background & Context

• The Central Water Commission is the national agency responsible for monitoring major reservoirs and publishes weekly storage bulletins comparing current storage to last year and the normal storage level defined by the 10-year average.
• Live storage refers to the volume of water stored above the dead (non-usable) storage level in reservoirs, critical for water supply and irrigation.
• India's reservoir storage is closely linked to the southwest monsoon that generally arrives in June, driving inflows to reservoirs.
• El Niño is a climatic phenomenon characterized by the periodic warming of the central and eastern Pacific Ocean, which can weaken the Indian southwest monsoon and reduce rainfall, negatively impacting reservoir replenishment and agriculture.
• Crops such as the Kuruvai paddy in Tamil Nadu depend on water releases from reservoirs like Mettur Dam; hence, water scarcity affects crop yields.

Why This Matters for Exams / Exam Relevance

• Understanding current water storage data and reservoir levels is important for geography, environmental science, and current affairs sections of competitive exams in India.
• Knowledge of the Central Water Commission's role and reservoir statistics helps grasp the challenges in India's water resource management amid climate variability.
• The linkage between El Niño, southwest monsoon variability, and reservoir levels is often tested under climate change and disaster management topics.
• Specific knowledge of reservoir locations, their storage levels, and irrigation importance can aid in answering questions related to agriculture and water security.

Points to Remember

• As of May 2026, 13 major reservoirs across India fell below 50% storage capacity.
• Chandan Dam in Jharkhand recorded 0.00% storage on 4 May 2026, indicating extreme water scarcity there.
• Mettur Dam in Tamil Nadu was below its critical storage level on 17 May 2026, affecting irrigation for key crops.
• Southern India recorded the highest number of reservoirs with storage below 40%, signaling regional water stress.
• El Niño events influence monsoon rainfall strength, reservoir inflows, and consequently water availability in India.
• The Central Water Commission monitors 166 major reservoirs and provides weekly bulletins for water storage status vital for managing resources and planning.