GEOLOGY

Detailed explanation-1: -A natural levee is a ridge made up mostly coarse sediments that parallels some streams.

Detailed explanation-2: -Floodplains are level strips of land on the sides of a channel that consist of fine‐grained silt and clay deposited during episodes of flooding. Higher ridges of sand and silt called natural levees are deposited near the edge of the channel.

Detailed explanation-3: -Larger, heavier particles like pebbles and sand are deposited first, whilst the lighter silt and clay only settle if the water is almost still. The flow of water is strongest on the outside of river bends, eroding the bank, but is slowest on the inside of the bends, allowing deposition of sand and gravel.

Detailed explanation-4: -Ridges and hills that separate two watersheds are called the drainage divide.

Detailed explanation-5: -An aquitard is a body that does not allow transmission of a significant amount of water, such as a clay, a till, or a poorly fractured igneous or metamorphic rock.