What is A man made waterway for navigation drainage irrigation?

A man-made waterway for navigation, drainage, or irrigation is called a canal. Canals are constructed to transport water from one location to another, often across natural barriers such as mountains or rivers. They can be used for a variety of purposes, including transporting goods and people, providing water for irrigation, and draining marshes and other wetlands. Canals have been used for centuries, and they continue to play an important role in water management and transportation today.