A coastal plain is a streach of land along a seacoast which slopes down. In most cases it is an elevated part of the oceanfloor.
A flood plain is the floor of river valley beyond the river bed. It is formed by mud, sand and silt
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A flood plain is a flat area near a river that is prone to flooding, whereas a coastal plain is a flat, low-lying land area near the coast. Flood plains are typically formed by river deposition, while coastal plains are formed by processes such as erosion and sedimentation along the coast.
The inner coastal plain is closer to the coastline and tends to have lower elevations, while the outer coastal plain is located further inland and typically has higher elevations. The inner coastal plain is often more prone to flooding and saltwater intrusion, while the outer coastal plain may have more diverse topography and soil types.
A coastal plain is a low, flat area of land near a coast that has been formed by the deposition of sediment over time by rivers or ocean currents. An interior plain, on the other hand, is a broad, flat region located inland and typically characterized by grasslands or agricultural land. Coastal plains are influenced by coastal processes, such as erosion and sedimentation, while interior plains are typically formed by the gradual erosion and deposition of sediment over millions of years.
Eastern coastal plain of India is broader and flatter compared to the Western coastal plain. The Eastern coastal plain receives more rainfall and is characterized by deltas formed by major rivers like the Ganges and the Brahmaputra. The Western coastal plain is narrower and more rugged, with steep cliffs and hills, receiving less rainfall and facing the Arabian Sea.
The colonists referred to the foothills between the Appalachian Mountains and the Atlantic Coastal Plain as the Piedmont region.
The climate of the Pacific coastal plain tends to be drier with a distinct wet and dry season, while the Caribbean lowlands typically experience a more consistent year-round rainfall and humidity. The Pacific coastal plain is also more influenced by cold ocean currents and cooler temperatures compared to the Caribbean lowlands.