Kaveri River water dispute
The sharing of waters of the Cauvery river has been the source of a serious conflict between the two states of Tamil Nadu and Karnataka. The genesis of this conflict rests in two agreements in 1892 and 1924 between the erstwhile Madras Presidency and Princely State of Mysore. The 802 kilometres (498 mi) Cauvery river has 44,000 km2 basin area in Tamil Nadu and 32,000 km2 basin area in Karnataka. The inflow from Karnataka is 425 TMC ft whereas that from Tamil Nadu is 252 TMCft
Based on inflow Karnataka is demanding its due share of water from the river. It states that the pre-independence agreements are invalid and are skewed heavily in the favour of the Madras Presidency, and has demanded a renegotiated settlement based on "equitable sharing of the waters". Tamil Nadu, on the other hand, pleads that it has already developed almost 3,000,000 acres (12,000 km2) of land and as a result has come to depend very heavily on the existing pattern of usage. Any change in this pattern, it says, will adversely affect the livelihood of millions of farmers in the state.
Decades of negotiations between the parties bore no fruit. The Government of India then constituted a tribunal in 1990 to look into the matter. After hearing arguments of all the parties involved for the next 16 years, the tribunal delivered its final verdict on 5 February 2007. In its verdict, the tribunal allocated 419 TMC of water annually to Tamil Nadu and 270 TMC to Karnataka; 30 TMC of Cauvery river water to Kerala and 7 TMC to Puducherry. Karnataka and Tamil Nadu being the major shareholders, Karnataka was ordered to release 192 TMC of water to Tamil Nadu in a normal year from June to May.
The dispute however, did not end there, as all four states decided to file review petitions seeking clarifications and possible renegotiation of the order.
The British controlled both Mysore and Madras for a short period in the middle of the 19th century. During their regime, numerous plans were drawn up for the utilization of the Kaveri waters by both states. However, the drought and subsequent famine in the mid-1870s put a hold on the implementation of these plans. The plans were revived by Mysore in 1881, by which time Mysore was back in the hands of the Mysore kings, while present day Tamil Nadu continued to remain a part of the Madras Presidency.
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