Which project within Mahanadi basin's combines water conservation and flood control?

Concept: The Hirakud venture within the Mahanadi bowl coordinating preservation of water with surge control. 

Nowadays, dams are built not fair for water system but for power era, water supply for household and mechanical employments, surge control, entertainment, inland route and angle breeding. 

Consequently, dams are presently alluded to as multi-purpose ventures where the numerous employments of the seized water is coordinates with one another.

Hence, the correct answer is option D.