With the help of the Leigh Flood barrier and the re-inforced concrete wall built on the bank of the River Medway in Tonbridge, the town centre was protected from the rising water.
Floods may be caused by: When does flooding occur? What is a flood plain? The boundary of a river basin is called the watershed. A drowned river valley in a coastal lowland area. Occurs near or at the mouth of a river, where the tide meets the current and the fresh and salt waters mix.
Flooding happens when a river has too much water in its channel. The water breaks through the river banks and spreads over the surrounding land. A barrier forming a temporary dam that may be erected quickly or permanently alongside a river to protect a flood-prone area.
The flood plain is the flat land of the river valley close to the river banks. The floodplain is usually found in the lower course of a river. It is a fertile area of land, used for agriculture and growing crops. A gorge is a steep-sided river valley which is very narrow and deep. Most gorges have rocky sides. The river cuts this deep valley by erosion.
Gorges are created over thousands of years. The supply of water to farmland so that crops can grow in areas wherewater supplies are scarce or unreliable. In areas where there is not much rainfall, farmers irrigate the land, by diverting water from rivers to their fields, in channels, ditches or pipes.
A bend in a river - usually in the middle or lower course. The meander continually changes shape as the fast flowing current of water erodes the outside bank of the meander bend and deposition occurs in the slack water of the inside of the bend. The end of the river. The mouth may be where the river meets the sea, a lake or a larger waterway. Most rivers flow out into the sea, and this is where they end their journey. Mudflats are large area of mud that the tide washes over twice each day.
They are rich in plant and animal life. A small arc-shaped lake formed when a meander is sealed off by deposition. Oxbows are only found on river floodplains. A pool at the foot of a small water-fall in a river. The pool is deep because the water plunging into it has eroded the river bed. Rapids are fast-flowing stretches of water formed where the river surface breaks up into waves because rocks are near to the surface. A river is a naturally winding watercourse that drains surplus water from a drainage basin.
Water that has from something. Usually rain water that has a roof into a gutter, or run - off sloping ground into a channel or pond. Particles bouncing down a river bed. This process causes attrition, and adds to the silt and sediment in the river. The name given to material that has been carried by rivers or the sea and then deposited. Sediment may be called alluvium if it deposited on the bed or a river, it may be called a beach when deposited by waves. Tiny pieces of sand or rocks.
Attrition The wearing away of particles of rock as they bounce along the riverbed or knock against each other and wear away becoming more rounded. Alluvium The name for any material deposited by a river.
Silt is tiny material carried by running water Back to the top B River bank Bank The ground at the side of a river Basin Drainage basin The area of land that is drained by a river and its tributaries.
Bed riverbed The riverbed is the ground at the bottom of the river - often made up of sand and stones. Channel A groove in the land that a river flows along. Cliff river cliff A cliff is any steep slope that has been formed by natural processes. Current The flow of the river. Confluence Where two rivers or streams meet. Back to the top D Dam Dam A barrier built, usually across a watercourse, for holding back water or diverting the flow of water.
Delta A fan-shaped area of sediment built up at the mouth of a river.
primary homework help rivers glossary. As more water rivers the channels they grow forming gullies larger channels. Help streams in the gullies woodlands become big enough to form a river. In some places, rain water can't sink into the ground as the ground is too homework already. The water forms a bog.
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primary homework help rivers glossary It takes many tributary streams to form a river. The great majority of rivers eventually flow into . Primary homework help rivers glossary. September 11, / 0 Comments / in Uncategorized / by Randomly received the best text/essay in the world from @claudiazivana 10 marks and a 1st for you.