THENPENNAI RIVER

About: 

• Names: The South Pennar River is known as Thenpennaiyaru in Tamil and Dakshina Pinakini in Kannada. It is also referred as Ponnaiyar. 
  
  
• Route: 
  • The river originates from the South-Eastern side of the Chennakesava hills and the North-Western side of the Nandi Hills or Nandidurg in the Chikkaballapur district of Karnataka state. 
    
    
  • It flows for a distance of about 85 kilometres within Karnataka, to the north of Bangalore. 
    
    
  • Just before the interstate border, excess water from Bellandur and Vartur lakes in Bangalore flows into the river and then it flows towards south east and enters Tamil Nadu at a distance of 4 kilometres to the west of Pagalur. 
    
    
  • It flows 400 kilometres (km) from its point of origin before joining the Bay of Bengal at Cuddalore district of Tamilnadu. 
    
    
  
  
  
• Chief Tributaries: En route, its chief tributaries are the Chinnar (Markanda nadhi), Vaniyar and Pambaru rivers.