File:Bateau traversant le canal de corinthe.jpg
Some canals require blasting through rock

A canal is a waterway made by humans. For many centuries, canals have been built as a way of transporting heavy goods in barges or boats. Canals usually connect lakes, rivers, or oceans. The Panama Canal is a famous canal that connects the Atlantic Ocean with the Pacific Ocean. Many canals are reinforced with clay or concrete on the sides.

Other canals are used for irrigation or hydropower.