Surface Water (river systems and watershed): Trevor
Surface water is fresh water on Earth's land surface. Surface water is found in lakes, rivers, streams, and wetlands. Today, most large cities depend on surface water for their water supplies. Rivers, lakes, and streams provide drinking water, water to grow crops, food such as fish and shellfish, power for industry, and means of transportation by boat. Watershed: The area of land that is drained by a river is known as a rivershed. Pollution anywhere in a watershed may end up polluting a river. The amount of water that enters a watershed varies throughout the year. Rapidly melting snow as well as spring and summer rains can dramatically increase the amount of water in a watershed. River systems: As streams and rivers move across the land, they form a flowing network of water called a river system. If a river system is viewed from above, it can look like the roots of a tree that are feeding into a trunk. Ex. Amazon river.