canals
Transportation
canals are man made waterways, rivers are natural waterways
The Channels Natural Area Preserve was created in 2008.
natural waterways
Natural Heroes - 2004 Acting Locally Protecting Our Waterways 1-10 was released on: USA: 12 August 2004
No Colirado border is marked by natural features.
super natural is on 18
Antarctica is the continent that lacks natural waterways due to its vast expanse of ice and minimal liquid water present.
The word canal does not exactly have an antonym, although you may in some cases want to make a distinction between natural waterways such as rivers, and artificial waterways such as canals.
Natural Waterways
Virginia is bordered by two major waterways: the Potomac River to the north, which separates it from Maryland, and the James River, which flows through the state and eventually empties into the Chesapeake Bay. Additionally, the Atlantic Ocean lies to the southeast of Virginia, providing another natural boundary. These waterways have played significant roles in Virginia's history and development.
Latvia has numerous canals, but the most notable ones are part of its extensive river and lake systems. The exact number of canals can vary, as many smaller waterways may not be officially classified as canals. Major canals include the Daugava River Canal and the Lielupe River Canal, among others. Overall, Latvia's network of waterways includes a mix of natural and man-made channels that support transportation and irrigation.