Carry most of the water that goes from land to sea (groundwater & overland flow)
Transport billions of tons of sediment to the ocean each year
Transport billions of tons of soluble salts to the oceans each year
Shape the surface of the Earth
Stream Flow Some of the consequences of natural stream flow present engineering and social challenges with which we grapple year after year, and have through civilization’s history. The flow of fresh water in channels on the Earth’s surface has been essential to the development of topography and most ecosystems.
Floodplain Delta Levee flat or nearly flat land adjacent to a stream or river that experiences occasional or periodic flooding deposit at the mouth of a river is usually roughly triangular in shape river's banks are built up above the level of the rest of the floodplain Meander
These are satellite images before and during Summer, 1993 floods of the Mississippi river north of St.Louis. Mississippi Floodplain
Alluvial fan fan-shaped deposit formed where a fast flowing stream flattens, slows, and spreads
Streams Locked in Valleys Streams like these (and the Potomac River at Great Falls) have virtually no (normal) floodplains. They have carved into rock so deeply, that their meandering and other characteristic evolutionary features are restricted.
Glacial landforms Outwash Plain- large volumes of rock and dirt debris that often spreads out in a great sheet Terminal Moraine - accumulation of boulders, stones, or other debris carried and deposited by a glacier Alaska Long Island, NY