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Liane (river)
The Liane is a 38 km long river in the Pas-de-Calais department in northern France. It rises in Quesques and flows into the English Channel at Boulogne-sur-Mer. Other communes along its length include: Selles, Brunembert, Bournonville, Alincthun, Crémarest, Wirwignes, Questrecques, Samer, Carly, Hesdigneul-lès-Boulogne, Isques, Saint-Léonard, Hesdin-l'Abbé, Condette, Saint-Étienne-au-Mont, and Outreau. Geography The Liane flows for a length of 38.2 km. It rises at Quesques, then flows through the communes of Bournonville, Wirwignes, Questrecques, Carly, Hesdigneul, Isques and Saint-Léonard. It finally flows into the English channel at Boulogne-sur-Mer. Before being fitted with canals and locks, the Liane estuary contributed directly to the ''fleuve marin côtier'' which abuts the Picardy estuaries up to the location of the two capes. It has been proposed in one variation of the project that its estuary, although significantly transformed by technol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hesdigneul-lès-Boulogne
Hesdigneul-lès-Boulogne (, literally ''Hesdigneul near Boulogne''; pcd, Hédignu-lès-Boulonne) is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. Geography A forestry and farming village situated some south of Boulogne, at the junction of the D52 and D240 roads. The A16 autoroute The A16 autoroute – also known as ''L'Européenne'' and forming between Abbeville and Dunkirk a part of the larger ''Autoroute des estuaires'' – is a motorway in northern France. The motorway, which has a total length of , starts at a ju ... forms the western border of the commune and the river Liane the north and eastern. Population Places of interest * The church of St. Eloi, dating from the nineteenth century. See also * Communes of the Pas-de-Calais department References Hesdigneullesboulogne {{PasdeCalais-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hesdin-l'Abbé
Hesdin-l'Abbé () is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. Geography A forestry and farming village situated some south of Boulogne, at the junction of the D901 (formerly the N1 Paris-Calais highway) and theD240 road. The A16 autoroute forms part of the western border of the commune and the river Liane the southern. Population Places of interest * The church of St.Leger, dating from the seventeenth century. * The eighteenth-century chateau d'Hesdin-l'Abbé, nowadays the Hotel Cléry. * A seventeenth-century manorhouse. See also *Communes of the Pas-de-Calais department The following is a list of the 890 communes of the Pas-de-Calais department of France. The communes cooperate in the following intercommunalities (as of 2020): [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Source (river Or Stream)
The headwaters of a river or stream is the farthest place in that river or stream from its estuary or downstream confluence with another river, as measured along the course of the river. It is also known as a river's source. Definition The United States Geological Survey (USGS) states that a river's "length may be considered to be the distance from the mouth to the most distant headwater source (irrespective of stream name), or from the mouth to the headwaters of the stream commonly known as the source stream". As an example of the second definition above, the USGS at times considers the Missouri River as a tributary of the Mississippi River. But it also follows the first definition above (along with virtually all other geographic authorities and publications) in using the combined Missouri—lower Mississippi length figure in lists of lengths of rivers around the world. Most rivers have numerous tributaries and change names often; it is customary to regard the longest t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lys (river)
The Lys () or Leie () is a river in France and Belgium, and a left-bank tributary of the Scheldt. Its source is in Pas-de-Calais, France, and it flows into the river Scheldt in Ghent, Belgium. Its total length is . Historically a very polluted river from the high population density and industrialisation in both Northern France and Belgium, it has seen substantial improvements in recent years, partly due to the decline of the principal industry, the spinning and weaving of flax. The region of the Leie (between Deinze and Ghent) was known as a favourite place for numerous painters in the first half of the 20th century. The source of the Lys is in a village, Lisbourg, east of Fruges, in the Pas-de-Calais department of France. It flows generally northeast through the following departments of France, provinces of Belgium and towns and municipalities: *Pas-de-Calais (F): Thérouanne, Aire-sur-la-Lys * Nord (F): Merville, Armentières, Halluin * Hainaut (B): Comines-Warneton *Wes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flood
A flood is an overflow of water ( or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are an area of study of the discipline hydrology and are of significant concern in agriculture, civil engineering and public health. Human changes to the environment often increase the intensity and frequency of flooding, for example land use changes such as deforestation and removal of wetlands, changes in waterway course or flood controls such as with levees, and larger environmental issues such as climate change and sea level rise. In particular climate change's increased rainfall and extreme weather events increases the severity of other causes for flooding, resulting in more intense floods and increased flood risk. Flooding may occur as an overflow of water from water bodies, such as a river, lake, or ocean, in which the water overtops or breaks levees, resulting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wimereux (river)
Wimereux (; vls, Wimeruwe) is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. Geography Wimereux is a coastal town situated some north of Boulogne, at the junction of the D233 and the D940 roads, on the banks of the river Wimereux. The river Slack forms the northern boundary of the commune, the English Channel the western. Farming and tourism are its principal activities. History At Pointe-aux-Oies, dolmen can still be seen at a Stone Age prehistoric site. Vauban built a coastal fort at the mouth of the river Wimereux, the ruins showed at low-tide until the 1940s. Napoleon ordered a port to be built here between 1803 and 1804, taking its name from the river. In 1840, the future Napoleon III, first president (and last monarch) of France, landed at Pointe aux Oies. The territory of Wimereux originally belonged to the commune of Wimille, from which it separated on 28 May 1899. In the same year, the first radio link between France and Engl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discharge (hydrology)
In hydrology, discharge is the volumetric flow rate of water that is transported through a given cross-sectional area. It includes any suspended solids (e.g. sediment), dissolved chemicals (e.g. CaCO3(aq)), or biologic material (e.g. diatoms) in addition to the water itself. Terms may vary between disciplines. For example, a fluvial hydrologist studying natural river systems may define discharge as streamflow, whereas an engineer operating a reservoir system may equate it with outflow, contrasted with inflow. Theory and calculation A discharge is a measure of the quantity of any fluid flow over unit time. The quantity may be either volume or mass. Thus the water discharge of a tap (faucet) can be measured with a measuring jug and a stopwatch. Here the discharge might be 1 litre per 15 seconds, equivalent to 67 ml/second or 4 litres/minute. This is an average measure. For measuring the discharge of a river we need a different method and the most common is the 'area-velocity' method. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mouth (river)
A river mouth is where a river flows into a larger body of water, such as another river, a lake/reservoir, a bay/gulf, a sea, or an ocean. At the river mouth, sediments are often deposited due to the slowing of the current reducing the carrying capacity of the water. The water from a river can enter the receiving body in a variety of different ways. The motion of a river is influenced by the relative density of the river compared to the receiving water, the rotation of the earth, and any ambient motion in the receiving water, such as tides or seiches. If the river water has a higher density than the surface of the receiving water, the river water will plunge below the surface. The river water will then either form an underflow or an interflow within the lake. However, if the river water is lighter than the receiving water, as is typically the case when fresh river water flows into the sea, the river water will float along the surface of the receiving water as an overflow. Alon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Public Enquiry
A tribunal of inquiry is an official review of events or actions ordered by a government body. In many common law countries, such as the United Kingdom, Ireland, Australia and Canada, such a public inquiry differs from a royal commission in that a public inquiry accepts evidence and conducts its hearings in a more public forum and focuses on a more specific occurrence. Interested members of the public and organisations may make (written) evidential submissions, as is the case with most inquiries, and also listen to oral evidence given by other parties. Typical events for a public inquiry are those that cause multiple deaths, such as public transport crashes or mass murders. In addition, in the UK, the Planning Inspectorate, an agency of the Department for Communities and Local Government, routinely holds public inquiries into a range of major and lesser land use developments, including highways and other transport proposals. Advocacy groups and opposition political parties are l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Estuary
An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environments and are an example of an ecotone. Estuaries are subject both to marine influences such as tides, waves, and the influx of saline water, and to fluvial influences such as flows of freshwater and sediment. The mixing of seawater and freshwater provides high levels of nutrients both in the water column and in sediment, making estuaries among the most productive natural habitats in the world. Most existing estuaries formed during the Holocene epoch with the flooding of river-eroded or glacially scoured valleys when the sea level began to rise about 10,000–12,000 years ago. Estuaries are typically classified according to their geomorphological features or to water-circulation patterns. They can have many different names, such as bays, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lock (water Transport)
A lock is a device used for raising and lowering boats, ships and other watercraft between stretches of water of different levels on river and canal waterways. The distinguishing feature of a lock is a fixed chamber in which the water level can be varied; whereas in a caisson lock, a boat lift, or on a canal inclined plane, it is the chamber itself (usually then called a caisson) that rises and falls. Locks are used to make a river more easily navigable, or to allow a canal to cross land that is not level. Later canals used more and larger locks to allow a more direct route to be taken. Pound lock A ''pound lock'' is most commonly used on canals and rivers today. A pound lock has a chamber with gates at both ends that control the level of water in the pound. In contrast, an earlier design with a single gate was known as a flash lock. Pound locks were first used in China during the Song Dynasty (960–1279 AD), having been pioneered by the Song politician and naval en ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canal
Canals or artificial waterways are waterways or engineered channels built for drainage management (e.g. flood control and irrigation) or for conveyancing water transport vehicles (e.g. water taxi). They carry free, calm surface flow under atmospheric pressure, and can be thought of as artificial rivers. In most cases, a canal has a series of dams and locks that create reservoirs of low speed current flow. These reservoirs are referred to as ''slack water levels'', often just called ''levels''. A canal can be called a ''navigation canal'' when it parallels a natural river and shares part of the latter's discharges and drainage basin, and leverages its resources by building dams and locks to increase and lengthen its stretches of slack water levels while staying in its valley. A canal can cut across a drainage divide atop a ridge, generally requiring an external water source above the highest elevation. The best-known example of such a canal is the Panama Canal. Many ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
