During whose reign were the dams, lakes and irrigation systems built extensively?

During the reign of Chandragupta Maurya, dams, lakes, and irrigation systems were built extensively throughout his kingdom. In the 11th century, Bhopal Lake was one of the largest artificial lakes built in Bhopal. This was motivated by the need to improve agriculture and provide a reliable source of water for drinking and irrigation. The construction of these systems helped to increase agricultural productivity and improve food security, as well as provide a source of water for other uses.