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A drainage basin is an area of land in which all flowing surface water converges to a single point, such as a river mouth , or flows into another body of water , such as a lake or ocean . A basin is separated from adjacent basins by a perimeter, the drainage divide , made up of a succession of elevated features, such as ridges and hills . A basin may consist of smaller basins that merge at river confluences , forming a hierarchical pattern .

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70-635: Gancia is an Italian wine-making company which produces a broad range of sparkling and still wines from the Piedmont region. The company was founded in 1850 in Turin by Carlo Gancia. Carlo Gancia is known as the father of Italian sparkling wine , producing the first sparkling wine made with the Classic Method (or Traditional Method) in Piedmont in 1850 on his return from France where he had studied

140-490: A barrier against France. Piedmont was a springboard for Italian unification in 1859–1861, following earlier unsuccessful wars against the Austrian Empire in 1820–1821, and 1848–1849. This process is sometimes referred to as Piedmontisation . The efforts were later countered by the efforts of rural farmers. The House of Savoy became Kings of Italy , and Turin briefly became the capital of Italy. However, when

210-437: A common task in environmental engineering and science. In a closed drainage basin, or endorheic basin , rather than flowing to the ocean, water converges toward the interior of the basin, known as a sink , which may be a permanent lake, a dry lake , or a point where surface water is lost underground . Drainage basins are similar but not identical to hydrologic units , which are drainage areas delineated so as to nest into

280-454: A drainage basin, and there are different ways to interpret that data. In the unlikely event that the gauges are many and evenly distributed over an area of uniform precipitation, using the arithmetic mean method will give good results. In the Thiessen polygon method, the drainage basin is divided into polygons with the rain gauge in the middle of each polygon assumed to be representative for

350-540: A drainage boundary is referred to as watershed delineation . Finding the area and extent of a drainage basin is an important step in many areas of science and engineering. Most of the water that discharges from the basin outlet originated as precipitation falling on the basin. A portion of the water that enters the groundwater system beneath the drainage basin may flow towards the outlet of another drainage basin because groundwater flow directions do not always match those of their overlying drainage network. Measurement of

420-450: A member of the PD who had been mayor of Turin from 2001 to 2011. Chiamparino was in charge until the 2019 Piedmontese regional election , when Alberto Cirio of Forza Italia became the new president of the region. Piedmont is divided into eight provinces. As in the rest of Italy, Italian is the official national language. The main local languages are Piedmontese , Insubric (spoken in

490-602: A multi-level hierarchical drainage system . Hydrologic units are defined to allow multiple inlets, outlets, or sinks. In a strict sense, all drainage basins are hydrologic units but not all hydrologic units are drainage basins. About 48.71% of the world's land drains to the Atlantic Ocean . In North America , surface water drains to the Atlantic via the Saint Lawrence River and Great Lakes basins,

560-526: Is a stub . You can help Misplaced Pages by expanding it . Piedmont Piedmont ( / ˈ p iː d m ɒ n t / PEED -mont ; Italian : Piemonte , pronounced [pjeˈmonte] ; Piedmontese : Piemont , [pjeˈmʊŋt] ), located in northwest Italy , is one of the 20 regions of Italy . It borders the Liguria region to the south, the Lombardy and Emilia-Romagna regions to

630-633: Is a fertile agricultural region. The main agricultural products in Piedmont are cereals , including rice , representing more than 10% of national production, maize , grapes for wine -making, fruit and milk . With more than 800,000 head of cattle in 2000, livestock production accounts for half of total agricultural production in Piedmont. Piedmont is one of the great winegrowing regions in Italy. More than half of its 700 km (170,000 acres) of vineyards are registered with DOC designations. It produces prestigious wines as Barolo and Barbaresco from

700-547: Is a key factor in the creation of long-lasting value and working in a cooperative and collaborative perspective is essential, the network of the Royal Residences represents an example worth of notice. Piedmont has many small and picturesque villages, 20 of them have been selected by I Borghi più belli d'Italia (English: The most beautiful Villages of Italy ), a non-profit private association of small Italian towns of strong historical and artistic interest, that

770-744: Is in Novara by MEMC. Olivetti , once a major electronics industry whose plants were in Scarmagno and Ivrea , has now turned into a small-scale computer service company and no longer produces computers. Leonardo Elettronica in Turin-Caselle develops and manufactures airborne mission systems and airborne computers. Machine building has a long tradition in Piedmont with the manufacturing of excavators, telescopic handlers, industrial refrigerators, printing machines, paper machines, packaging machines, glass machines, turbines, and high-speed trains. One of

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840-545: Is located in Piedmont. Below are showed some basic stages of wool processing (not complete). One of Italy's four industrial jewellery districts is located in Valenza . Large jewellery companies such as Damiani , Bulgari , and Cartier have factories here as do many other smaller companies. Since 2006, the Piedmont region has benefited from the start of the Slow Food movement and Terra Madre , events that highlighted

910-447: Is lower than the national average. In 2008, it was equal to 174 inhabitants per km , compared to the national figure of about 200. The Metropolitan City of Turin has 335 inhabitants per km , whereas Verbano-Cusio-Ossola is the least densely populated province, with 72 inhabitants per km . The population of Piedmont followed a downward trend throughout the 1980s, a result of the natural negative balance (of some 3 to 4% per year), while

980-487: Is referred to as " watershed management ". In Brazil , the National Policy of Water Resources, regulated by Act n° 9.433 of 1997, establishes the drainage basin as the territorial division of Brazilian water management. When a river basin crosses at least one political border, either a border within a nation or an international boundary, it is identified as a transboundary river . Management of such basins becomes

1050-614: Is the Dead Sea . Drainage basins have been historically important for determining territorial boundaries, particularly in regions where trade by water has been important. For example, the English crown gave the Hudson's Bay Company a monopoly on the fur trade in the entire Hudson Bay basin, an area called Rupert's Land . Bioregional political organization today includes agreements of states (e.g., international treaties and, within

1120-503: The 2006 Winter Olympics . Drainage basin Other terms for a drainage basin are catchment area , catchment basin , drainage area , river basin , water basin , and impluvium . In North America, they are commonly called a watershed , though in other English-speaking places, "watershed" is used only in its original sense, that of the drainage divide line. A drainage basin's boundaries are determined by watershed delineation ,

1190-467: The 2010 Piedmontese regional election , which took place on 29–30 March, Roberto Cota of Lega Nord defeated incumbent Mercedes Bresso of the Democratic Party (PD). For the 2014 Piedmontese regional election , Cota chose not to stand again for president and the parties composing his coalition failed to agree on a single candidate, resulting in a landslide victory for Sergio Chiamparino ,

1260-461: The 2020–21 season ) between them (36 titles won by Juventus and seven by Torino), more than any other city in Italy. Juventus is the most successful club in Italy, having won the most league titles (36), Coppa Italia titles (14), and Supercoppa Italiana titles (9) of any team in the country; Juventus Women , established in 2017, also achieved success, immediately becoming one of the country's most successful women's teams. Other smaller teams include

1330-713: The African Great Lakes , the interiors of Australia and the Arabian Peninsula , and parts in Mexico and the Andes . Some of these, such as the Great Basin, are not single drainage basins but collections of separate, adjacent closed basins. In endorheic bodies of water where evaporation is the primary means of water loss, the water is typically more saline than the oceans. An extreme example of this

1400-711: The COVID-19 pandemic ). The economy of Piedmont is anchored on a rich history of state support for higher education, including some of the leading universities in Italy. Piedmont is home to the famous University of Turin , the Polytechnic University of Turin , the University of Eastern Piedmont , and more recently the United Nations Interregional Crime and Justice Research Institute . The population density in Piedmont

1470-607: The Eastern Seaboard of the United States, the Canadian Maritimes , and most of Newfoundland and Labrador . Nearly all of South America east of the Andes also drains to the Atlantic, as does most of Western and Central Europe and the greatest portion of western Sub-Saharan Africa , as well as Western Sahara and part of Morocco . The two major mediterranean seas of the world also flow to

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1540-750: The Langhe near Alba , and the Moscato d'Asti and sparkling Asti from the vineyards around Asti . The city of Asti is about 55 km (34 mi) east of Turin in the plain of the Tanaro River and is one of the most important centres of Montferrat , one of the best known Italian wine districts in the world, declared officially on 22 June 2014 a UNESCO World Heritage site. Indigenous grape varieties include Nebbiolo , Barbera , Dolcetto , Freisa , Grignolino and Brachetto . Tourism in Piedmont employs 75,534 people and involves 17,367 companies operating in

1610-691: The Magyars , Saracens and Muslim Moors . At the time Piedmont, as part of the Kingdom of Italy within the Holy Roman Empire , was subdivided into several marches and counties. In 1046, Otto of Savoy added Piedmont to the County of Savoy , with a capital at Chambéry (now in France). Other areas remained independent, such as the powerful comuni (municipalities) of Asti and Alessandria and

1680-735: The Mississippi (3.22 million km ), and the Río de la Plata (3.17 million km ). The three rivers that drain the most water, from most to least, are the Amazon, Ganges , and Congo rivers. Endorheic basin are inland basins that do not drain to an ocean. Endorheic basins cover around 18% of the Earth's land. Some endorheic basins drain to an Endorheic lake or Inland sea . Many of these lakes are ephemeral or vary dramatically in size depending on climate and inflow. If water evaporates or infiltrates into

1750-809: The Nile River ), Southern , Central, and Eastern Europe , Turkey , and the coastal areas of Israel , Lebanon , and Syria . The Arctic Ocean drains most of Western Canada and Northern Canada east of the Continental Divide , northern Alaska and parts of North Dakota , South Dakota , Minnesota , and Montana in the United States, the north shore of the Scandinavian peninsula in Europe, central and northern Russia, and parts of Kazakhstan and Mongolia in Asia , which totals to about 17% of

1820-793: The Piedmontese Republic , existed between 1798 and 1799 before it was reoccupied by Austrian and Russian troops. In June 1800 a third client republic, the Subalpine Republic , was established in Piedmont. It fell under full French control in 1801 and it was annexed by France in September 1802. In the Congress of Vienna , the Kingdom of Sardinia was restored and furthermore received the Republic of Genoa to strengthen it as

1890-735: The Salassi . They were later subdued by the Romans ( c.  220 BC ), who founded several colonies there including Augusta Taurinorum (Turin) and Eporedia ( Ivrea ). After the fall of the Western Roman Empire , the region was successively invaded by the Burgundians , the Ostrogoths (5th century), East Romans , Lombards (6th century), and Franks (773). In the 9th–10th centuries there were further incursions by

1960-674: The Swiss border . The region has the longest motorway network amongst the Italian regions (about 800 km). It radiates from Turin, connecting it with the other provinces in the region, as well as with the other regions in Italy. In 2001, the number of passenger cars per 1,000 inhabitants was 623 (above the national average of 575). There is a Turin–Milan high-speed railway , travel time is only 52 minutes. Turin-Caselle International Airport has domestic and international flights and handle 3,952,158 passengers and 3,334 tons of cargo in 2019 (before

2030-634: The United States , in Piedmont only the production of New Holland excavators in San Mauro Torinese and IVECO diesel engines in Turin ). Neither of them are headquartered in Turin anymore, however, some research and development centres are still working. Formerly famous automotive design companies also were sold to global automotive groups: Italdesign Giugiaro to Volkswagen , Ghia to Ford , Pininfarina to Mahindra ; Bertone went into bankruptcy in 2014. The massive decline in

2100-630: The American Gancia is consumed massively in Argentina. On the occasion of the 170th anniversary of its foundation, the company was honored by the Italian government with the issue of a commemorative stamp reproducing a 1922 advertising poster by Leonetto Cappiello . Gancia produces still and sparkling wines made from grapes like Brachetto , Chardonnay , Pinot noir , Pinot grigio and Pinot bianco . They also produce Rosso, Bianco and Extra Dry vermouth . This winery -related article

2170-789: The Andes. The Indian Ocean 's drainage basin also comprises about 13% of Earth's land. It drains the eastern coast of Africa, the coasts of the Red Sea and the Persian Gulf , the Indian subcontinent , Burma, and most parts of Australia . The five largest river basins (by area), from largest to smallest, are those of the Amazon (7 million km ), the Congo (4 million km ), the Nile (3.4 million km ),

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2240-726: The Atlantic. The Caribbean Sea and Gulf of Mexico basin includes most of the U.S. interior between the Appalachian and Rocky Mountains , a small part of the Canadian provinces of Alberta and Saskatchewan , eastern Central America , the islands of the Caribbean and the Gulf, and a small part of northern South America. The Mediterranean Sea basin, with the Black Sea , includes much of North Africa , east-central Africa (through

2310-682: The Italian Piemonte , and other variant cognates come from the medieval Latin Pedemontium or Pedemontis , i.e. ad pedem montium , meaning "at the foot of the mountains" (referring to the Alps ), attested in documents from the end of the 12th century. Piedmont is surrounded on three sides by the Alps , including Monviso , where the river Po rises, and Monte Rosa . It borders France ( Auvergne-Rhône-Alpes and Provence-Alpes-Côte d'Azur ), Switzerland ( Ticino and Valais ), and

2380-471: The Italian capital was moved to Florence , and then to Rome , the administrative and institutional importance of Piedmont was reduced. The only recognition of Piedmont's historical role was that the crown prince of Italy was known as the Prince of Piedmont . After Italian unification, Piedmont was one of the most important regions in the first Italian industrialization. The gross domestic product (GDP) of

2450-399: The Italian regions of Lombardy , Liguria , Aosta Valley , and for a very small part with Emilia Romagna . The geography of Piedmont is 43.3% mountainous, along with extensive areas of hills (30.3%) and plains (26.4%). Piedmont is the second largest of Italy's 20 regions, after Sicily . It is broadly coincident with the upper part of the drainage basin of the river Po , which rises from

2520-649: The Lake District ("Piedmont's riviera"), which accounts for 32.84% of total overnight stays, and the metropolitan area of Turin, which accounts for 26.51%. In 2006, Turin hosted the XX Olympic Winter Games , and in 2007 it hosted the XXIII Universiade . Alpine tourism tends to concentrate in a few highly developed stations like Alagna Valsesia and Sestriere . Around 1980, the long-distance trail Grande Traversata delle Alpi (GTA)

2590-623: The US, interstate compacts ) or other political entities in a particular drainage basin to manage the body or bodies of water into which it drains. Examples of such interstate compacts are the Great Lakes Commission and the Tahoe Regional Planning Agency . In hydrology , the drainage basin is a logical unit of focus for studying the movement of water within the hydrological cycle . The process of finding

2660-903: The automotive industry caused other regions like Veneto (€163 billion in 2018) and Emilia-Romagna (€161 billion in 2018) to surpass Piedmont (€137 billion in 2018) in GDP and led to relative high unemployment. The peak of Italian motor vehicle production is reached in 1989 with 2.22 million units, but in 2019 (before the COVID-19 pandemic in Italy ) it was only 0.92 million units. Even existing Italian car production now relocated to South Italy , such as in Pomigliano d'Arco (140,478 in 2020), Melfi (229,848 in 2020), and Atessa (257,026 in 2020), because of cost cutting. There are some automotive suppliers of: There are some important companies in high-tech manufacturing: Comau (industrial robots) and Prima Industrie (laser equipment). Silicon wafer production

2730-406: The basin, it can form tributaries that change the structure of the land. There are three different main types, which are affected by the rocks and ground underneath. Rock that is quick to erode forms dendritic patterns, and these are seen most often. The two other types of patterns that form are trellis patterns and rectangular patterns. Rain gauge data is used to measure total precipitation over

2800-430: The discharge of water from a basin may be made by a stream gauge located at the basin's outlet. Depending on the conditions of the drainage basin, as rainfall occurs some of it seeps directly into the ground. This water will either remain underground, slowly making its way downhill and eventually reaching the basin, or it will permeate deeper into the soil and consolidate into groundwater aquifers. As water flows through

2870-441: The drainage area is dependent on the soil type. Certain soil types such as sandy soils are very free-draining, and rainfall on sandy soil is likely to be absorbed by the ground. However, soils containing clay can be almost impermeable and therefore rainfall on clay soils will run off and contribute to flood volumes. After prolonged rainfall even free-draining soils can become saturated , meaning that any further rainfall will reach

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2940-697: The drainage basin to the mouth, and may accumulate there, disturbing the natural mineral balance. This can cause eutrophication where plant growth is accelerated by the additional material. Because drainage basins are coherent entities in a hydrological sense, it has become common to manage water resources on the basis of individual basins. In the U.S. state of Minnesota , governmental entities that perform this function are called " watershed districts ". In New Zealand, they are called catchment boards. Comparable community groups based in Ontario, Canada, are called conservation authorities . In North America, this function

3010-507: The east, and the Aosta Valley region to the northwest. Piedmont also borders Switzerland to the north and France to the west. Piedmont has an area of 25,402 km (9,808 sq mi), making it the second-largest region of Italy after Sicily . As of 31 January 2021, the population was 4,269,714. The capital of Piedmont is Turin , which was also the capital of the Kingdom of Italy from 1861 to 1865. The French Piedmont ,

3080-884: The eastern part of the region), Occitan (spoken by a minority in the Occitan Valleys situated in the Province of Cuneo and the Metropolitan City of Turin ), and Franco-Provençal (spoken by another minority in the alpine heights of the Metropolitan City of Turin), like in the Susa Valley and Walser (spoken by a minority in the Province of Vercelli and Province of Verbano-Cusio-Ossola ). In association football , notable clubs in Piedmont include Turin -based Juventus and Torino , who have won 43 official top-flight league championships (as of

3150-444: The ex-Fiat plants now belong to other companies: aerospace is owned by Leonardo S.p.A. , turbo jet engines by General Electric , high-speed trains by Alstom , bearings by SKF . Fiat does not exist anymore as an independent company; car production belongs to Stellantis , and trucks, buses, tractors, agriculture and construction machines are produced by the independent company CNH Industrial (most manufacturing activity takes place in

3220-407: The first Italian institution to combine the activities being carried out by pre-existing local organizations to promote the territory internationally. The region contains major industrial centres, the most important of which is Turin, home to the Fiat conglomerate, but mass-market Fiat cars are not produced anymore, only small-scale manufacturing of luxury Maserati cars (36,702 in 2020). Most of

3290-435: The ground and along rivers it can pick up nutrients , sediment , and pollutants . With the water, they are transported towards the outlet of the basin, and can affect the ecological processes along the way as well as in the receiving water body . Modern use of artificial fertilizers , containing nitrogen (as nitrates ), phosphorus , and potassium , has affected the mouths of drainage basins. The minerals are carried by

3360-422: The ground at its terminus, the area can go by several names, such playa, salt flat, dry lake , or alkali sink . The largest endorheic basins are in Central Asia , including the Caspian Sea , the Aral Sea , and numerous smaller lakes. Other endorheic regions include the Great Basin in the United States, much of the Sahara Desert , the drainage basin of the Okavango River ( Kalahari Basin ), highlands near

3430-413: The historical and cultural heritage of Piedmont and nowadays they play a central role in the tourism field. In a reality in which the tourism industry is characterized by an amalgam of several players and stakeholders, the creation of a system or network like the one of the Royal Residences represents an added benefit for the whole territory as well as a competitive edge. Therefore, considering that tourism

3500-439: The hospitality and catering sector, with 1,473 hotels and other tourist accommodation. The sector generates a turnover of €2,671 million, 3.3% of the €80,196 million total estimated spending on tourism in Italy. The region is popular with both foreign visitors and those from other parts of Italy. In 2002 there were 2,651,068 total arrivals, 1,124,696 (42%) of whom were foreign. The traditional leading areas for tourism in Piedmont are

3570-441: The marquisates of Saluzzo and Montferrat . The County of Savoy became the Duchy of Savoy in 1416, and Duke Emanuele Filiberto moved the seat to Turin in 1563. In 1720, the Duke of Savoy became King of Sardinia , founding what evolved into the Kingdom of Sardinia and increasing Turin's importance as a European capital. The Republic of Alba was created in 1796 as a French client republic in Piedmont. A new client republic,

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3640-460: The migratory balance since 1986 has again become positive because of immigration. The population remained stable in the 1990s. The Turin metro area grew rapidly in the 1950s and 1960s due to an increase of immigrants from southern Italy and Veneto and today it has a population of approximately two million. As of 2008 , the Italian national institute of statistics (ISTAT) estimated that 310,543 foreign-born immigrants lived in Piedmont, equal to 7.0% of

3710-431: The most important industries in Piedmont is military aerospace with plants: Piedmont has several notable IT firms such as Olivetti and Arduino . Italy is the world's largest exporter of carded (71.8% in 2018) and combed (73.4% in 2018) wool fabrics. These are the only two types of fabrics not dominated by Chinese textile exports. There are three industrial districts that process wool in Italy. One of them, Biella ,

3780-727: The old "Piedmont Quadrilateral" components Novara , Alessandria , Casale , and Pro Vercelli . With the pre- World War II success of Pro Vercelli in 1910s and Juventus in 1930s, as well as winning cycles of Torino during the Grande Torino years and Juventus in different eras since 1950, the region became the most successful in terms of championships won. Casale and Novese contributed with one scudetto each. Other local teams include volleyball teams Cuneo (male) and AGIL Novara (female), basketball teams Biella Basketball and Junior Casale, ice hockey team Hockey Club Turin, and roller hockey side Amatori Vercelli , who have won three league titles, an Italian Cup, and two CERS Cups . Turin hosted

3850-471: The plains. 7.6% of the entire territory is considered protected area . There are 56 different national or regional parks; one of the most famous is the Gran Paradiso National Park , between Piedmont and the Aosta Valley . Piedmont has a typically temperate climate , which on the Alps becomes progressively temperate-cold and colder as it climbs to altitude. In areas located at low altitudes, winters are relatively cold but not very rainy and often sunny, with

3920-404: The possibility of snowfall, sometimes abundant. Snowfall, on the other hand, is less frequent and occasional in the northeast areas. Summers are hot with local possibilities of strong thunderstorms. Below are listed other towns of Piedmont with more than 20,000 inhabitants sorted by population. Piedmont was inhabited in early historic times by Celtic - Ligurian tribes such as the Taurini and

3990-442: The production techniques of champagne . After 15 years of trials and small batches, he commercialized it on a large scale in 1865. This innovative wine is still produced today, a premium Asti DOCG, aged for at least 24 months. Due to the complexity of the process Gancia is the only winery producing this product. The company is also known for its Gancia Aperitivo Originale. Like other Italian alcoholic beverages (such as Fernet ),

4060-418: The rainfall on the area of land included in its polygon. These polygons are made by drawing lines between gauges, then making perpendicular bisectors of those lines form the polygons. The isohyetal method involves contours of equal precipitation are drawn over the gauges on a map. Calculating the area between these curves and adding up the volume of water is time-consuming. Isochrone maps can be used to show

4130-399: The region was 137.4 billion euros in 2018, accounting for 7.8% of Italy's GDP. GDP per capita at purchasing power parity was 31,300 euros or 104% of the EU27 average in the same year. The GDP per employee was 111% of the EU average. Since 2006, the Piemonte Agency for Investments, Export and Tourism began to facilitate outside investment and promote Piedmont's industry and tourism. It was

4200-572: The responsibility of the countries sharing it. Nile Basin Initiative , OMVS for Senegal River , Mekong River Commission are a few examples of arrangements involving management of shared river basins. Management of shared drainage basins is also seen as a way to build lasting peaceful relationships among countries. The catchment is the most significant factor determining the amount or likelihood of flooding . Catchment factors are: topography , shape, size, soil type, and land use (paved or roofed areas). Catchment topography and shape determine

4270-637: The rich agricultural and viticultural value of the Po Valley and northern Italy. A chain of food halls Eataly works in collaboration with Slow Food . Piedmont is the leading producer of confectionery, coffee, rice, and white truffles in Italy. It is ranked 3 of 20 for the production of quality DOC and DOCG wines with 1,982,718 hl, there are 17 DOCG wines of all possible types (white, red, sweet, sparkling). In 2019, Piedmont accounted for 16.5% of wine exports from Italy, ranking second behind Veneto , with 36%. The typical food industries in Piedmont are: The unemployment rate stood at 6.2% in 2023. Lowland Piedmont

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4340-461: The river rather than being absorbed by the ground. If the surface is impermeable the precipitation will create surface run-off which will lead to higher risk of flooding; if the ground is permeable, the precipitation will infiltrate the soil. Land use can contribute to the volume of water reaching the river, in a similar way to clay soils. For example, rainfall on roofs, pavements , and roads will be collected by rivers with almost no absorption into

4410-411: The slopes of Monviso in the west of the region and is Italy's largest river. The Po drains the semicircle formed by the Alps and Apennines , which surround the region on three sides. The countryside is very diverse: from the rugged peaks of the massifs of Monte Rosa and Gran Paradiso to the damp rice paddies of Vercelli and Novara, from the gentle hillsides of the Langhe , Roero , and Montferrat to

4480-418: The speed with which the runoff reaches a river. A long thin catchment will take longer to drain than a circular catchment. Size will help determine the amount of water reaching the river, as the larger the catchment the greater the potential for flooding. It is also determined on the basis of length and width of the drainage basin. Soil type will help determine how much water reaches the river. The runoff from

4550-415: The time taken for rain to reach the river, while catchment size, soil type, and development determine the amount of water to reach the river. Generally, topography plays a big part in how fast runoff will reach a river. Rain that falls in steep mountainous areas will reach the primary river in the drainage basin faster than flat or lightly sloping areas (e.g., > 1% gradient). Shape will contribute to

4620-477: The time taken for runoff water within a drainage basin to reach a lake, reservoir or outlet, assuming constant and uniform effective rainfall. Drainage basins are the principal hydrologic unit considered in fluvial geomorphology . A drainage basin is the source for water and sediment that moves from higher elevation through the river system to lower elevations as they reshape the channel forms. Drainage basins are important in ecology . As water flows over

4690-422: The total regional population. Most immigrants come from Eastern Europe (mostly from Romania, Albania, and Ukraine) with smaller communities of African immigrants. The Regional Government ( Giunta Regionale ) is presided by the president of the region ( presidente della regione ), who is elected for a five-year term and is composed of the president and 14 ministers, including a vice president ( vice presidente ). In

4760-468: The world's land. Just over 13% of the land in the world drains to the Pacific Ocean . Its basin includes much of China, eastern and southeastern Russia, Japan, the Korean Peninsula , most of Indochina, Indonesia and Malaysia, the Philippines, all of the Pacific Islands , the northeast coast of Australia , and Canada and the United States west of the Continental Divide (including most of Alaska), as well as western Central America and South America west of

4830-430: Was created to draw more attention to the variety of remote, sparsely inhabited valleys. Within the tourism industry in Piedmont, a reference to the system of Royal Residences has to be made. First of all, it is part of the UNESCO World Heritage Sites since 1997 and, secondly, it represents a peculiarity of the region, since such a network cannot be found elsewhere in Italy. The Residences of the Royal House of Savoy belong to

4900-457: Was founded on the initiative of the Tourism Council of the National Association of Italian Municipalities. There are links with neighbouring France via the Fréjus and Colle di Tenda tunnels as well as the Montgenèvre Pass . Piedmont also connects with Switzerland by the Simplon and Great St Bernard passes. It is possible to reach Switzerland via a normal road that crosses eastern Piedmont, starting from Arona and ending in Locarno , on

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