Daily News Analysis » Rule Curve For Mullaperiyar

Rule Curve For Mullaperiyar

Recently, the Rule Curve came into effect between June 10 and November 30, 2022, during which the Mullaperiyar dam gets maximum inflows from the South West Monsoon.

Why in the News?

Recently, the Rule Curve came into effect between June 10 and November 30, 2022, during which the Mullaperiyar dam gets maximum inflows from the South West Monsoon. 

Key Points:

About Rule Curve

  • Rule Curve is a tabulation which specifies the quantum of storage of water or empty space to be maintained in a reservoir during different times of a year, based on the rainfall data for 35 years. 
  • It helps in decision-making for officials in charge of the dam, for the smooth operation of shutters, especially for the moderation of flood, during monsoon times.

About Mullaperiyar Dam:

  • The Mullaperiyar Dam was constructed during 1887-1895, located on the confluence of Mullayar and Periyar rivers in Kerala’s Idukki district.
    • The dam is within the Periyar Tiger Reserve.
  • It is operated and maintained by Tamil Nadu following an 1886 lease indenture for 999 years.
  • Dam purpose is to divert the waters of the west-flowing river Periyar eastward to the aridrain shadow regions of Tamil Nadu.

About Periyar River:

  • Periyar River originates from the Sivagiri hills of Western Ghats in Tamil Nadu and flows through the Periyar National Park.
  • The Periyar River is the longest river in Kerala. It is also known as the ‘Lifeline of Kerala’ as it is one of the few perennial rivers in the state.