|
Margorabbia
The Margorabbia is the river (Stream#Intermittent and ephemeral streams, intermittent stream) of Valtravaglia, a valley in the province of Varese, Lombardy, Italy. It is a tributary of the Tresa which it joins a few hundred metres upstream of Lake Maggiore. The source is near Valganna. After forming a number of small lakes, including Lago di Ganna and Lago di Ghirla, its course continues through the Lugano Prealps, Prealps of Varese until near Cunardo it is swallowed up by a system of caves: ''Pont Niv'', ''Antro dei Morti'', ''Grotte di Villa Radaelli'' and ''Grotte del Traforo''. It emerges from underground near Ferrera di Varese and runs through the crossing the valley’s comune, communes of Grantola, Mesenzana and Germignaga. A cycle path has recently been constructed along this part of the river. The torrent has many Tributary, affluents. The most important left side tributaries are the Rancina, the Boesio and the Gesone; from the right it receives the waters of the Bog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tresa
The river Tresa leaves Lake Lugano at a point between Lavena Ponte Tresa in Italy and Ponte Tresa in Switzerland and flows into Lake Maggiore near Luino, a few hundred metres after joining the Margorabbia. At the outflow from Lake Lugano the river is crossed by a bridge which unites the Swiss and Italian parts of Ponte Tresa; a customs post divides them. The river is about long, and for most of its course marks the boundary between the Italian Province of Varese and the Swiss canton (country subdivision), canton Ticino. It passes through the Swiss communes of Ponte Tresa, Croglio and Monteggio, and the Italian communes of Lavena Ponte Tresa, Cremenaga and Luino. A dam on the river, known as the Creva dam serves two purposes: to use the difference in elevation between the lakes to produce hydropower, and as far as possible to regulate the flow of water into Lake Maggiore in order to avoid or limit the dangers of flooding. See also * List of rivers of Italy * List of rivers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesenzana
Mesenzana is a ''comune'' (municipality) in the Province of Varese in the Italian region Lombardy, located about northwest of Milan and about northwest of Varese. As of 31 December 2004, it had a population of 1,318 and an area of .All demographics and other statistics: Italian statistical institute Istat. The municipality of Mesenzana contains the ''frazioni A ''frazione'' (: ''frazioni'') is a type of subdivision of a ''comune'' ('municipality') in Italy, often a small village or hamlet outside the main town. Most ''frazioni'' were created during the Fascist era (1922–1943) as a way to consolidat ...'' (subdivisions, mainly villages and hamlets) Malpensata, Molino d'Anna, Pezza, Maro, Cà Bianca nuova, Pianazzo, Piatta, Alpe Cavoglio, Gesiola del monte San Martino, and Le Cascine. Mesenzana borders the following municipalities: Brissago-Valtravaglia, Cassano Valcuvia, Duno, Grantola, Montegrino Valtravaglia. Demographic evolution Colors= id:lightgrey value:gra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lago Di Ganna
Lago di Ganna is a lake at Valganna in the Province of Varese, Lombardy, Italy. It has an area of 0,07 km² and a maximum depth of 3 m. It is part of a natural reserve. Geography It is located in the comune of Valganna. The lake has as an underground tributary the river Margorabbia, which than becomes an emissary that flows into the near Lago di Ghirla. It is entirely part of the frazione of ''Ganna'' and it's comprised in the Cinque Vette Park. History Between the XII and XIII centuries the benedictine monks changed the hydrography Hydrography is the branch of applied sciences which deals with the measurement and description of the physical features of oceans, seas, coastal areas, lakes and rivers, as well as with the prediction of their change over time, for the primary ... through some reclamation works. In 1984 the lake became the center of the ''Natural Reserve of the Lake Ganna''. Fauna The population in Lake Ganna is mainly represented by pikes and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lago Di Ghirla
Lago di Ghirla is a lake at Valganna in the Province of Varese, Lombardy, Italy. Geography Ghirla Lake is at 442 metres above sea level. Its affluent is river Margorabbia which is a subterranean river coming from Lake Ganna. Its maximal depth is 14 m (46 ft). Its surface covers an area of 0,28 km2 Location The Ghirla Lake is located under comune of Valganna and the highway strada statale 233 varesina passes near his Eastern side. The Lake is also comprised in the Cinque Vette Park Climate The climate is continental because the lake is in a prealpine valley : temperatures go far below 0 °C in winter and in summer the water temperature is about 20°C. History There are some important dates related to Lago di Ghirla: * 1898: the level of the lake was raised because of the construction of a dam which enabled the production of electrical energy thanks to a power station * 1914: the "Campionato Nazionale di pattinaggio di velocità", a national competition based o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Valganna
Valganna is a ''comune'' (municipality) within the Province of Varese in the Italian region Lombardy, located about 60 km northwest of Milan and about 13 km north of Varese. The name Valganna is a compound of valley and Ganna, which is the name of one of the villages located in the valley. Lago di Ghirla and Lago di Ganna are located in the territory of the municipality. Valganna borders the following municipalities: Arcisate, Bedero Valcuvia, Brinzio, Cuasso al Monte, Cugliate-Fabiasco, Cunardo, Induno Olona Induno Olona is a town and ''comune'' in Italy, in north-western Lombardy, north of Milan, in the Province of Varese. It had a population, in 2021, of c. 10,287. Topography The town is located between Valganna (valley), Valganna and Valceresi ...; the territory of the ''Comune'' is comprised in the Cinque Vette Park. References Cities and towns in Lombardy {{Varese-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piero Chiara
Piero Chiara (23 March 1913 – 31 December 1986) was an Italian writer. He was born in Luino, Italy. His father Eugenio was from Resuttano, Sicily, and his mother Virginia Maffei was from Comnago, a Piedmontese village in the municipality of Lesa. Sought by the Fascist militia during World War II, he fled to Switzerland in 1944. He returned to Italy two years later, starting his writing career. His most famous work is ''La stanza del vescovo'' of 1976, which was turned into a film by Dino Risi soon afterwards. He was married to Jula Sherb of Swiss origin.Corriere della Sera: "Marco Chiara, una vita tutta da raccontare" by Manzoni Franco 10 maggio 2011 They had one son Marco Chiara who was marr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dike (construction)
A levee ( or ), dike (American English), dyke (British English; see spelling differences), embankment, floodbank, or stop bank is an elevated ridge, natural or artificial, alongside the banks of a river, often intended to protect against flooding of the area adjoining the river. It is usually earthen and often runs parallel to the course of a river in its floodplain or along low-lying coastlines. Naturally occurring levees form on river floodplains following flooding. Sediment and alluvium are deposited on the banks and settle, forming a ridge that increases the river channel's capacity. Alternatively, levees can be artificially constructed from fill, designed to regulate water levels. In some circumstances, artificial levees can be environmentally damaging. Ancient civilizations in the Indus Valley, ancient Egypt, Mesopotamia and China all built levees. Today, levees can be found around the world, and failures of levees due to erosion or other causes can be major d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Hammer
Power hammers are mechanical forging hammers that use an electrical power source or steam to raise the hammer preparatory to striking, and accelerate it onto the work being hammered. They are also called open die power forging hammers. They have been used by blacksmiths, bladesmiths, metalworkers, and manufacturers since the late 1880s, having replaced trip hammers. Design and operation A typical power hammer consists of a frame, an anvil, and a reciprocating ram holding a hammer head or die. The workpiece is placed on the lower anvil or die and the head or upper die strikes the workpiece. The power hammer is a direct descendant of the trip hammer, differing in that the power hammer stores potential energy in an arrangement of mechanical linkages and springs, in compressed air, or steam, and by the fact that it accelerates the ram on the downward stroke. This provides more force than simply allowing the weight to fall. Predecessors like trip hammers, steam drop hammers, b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watermill
A watermill or water mill is a mill that uses hydropower. It is a structure that uses a water wheel or water turbine to drive a mechanical process such as mill (grinding), milling (grinding), rolling, or hammering. Such processes are needed in the production of many material goods, including flour, lumber, paper, textiles, and many metal products. These watermills may comprise gristmills, sawmills, paper mills, textile mills, hammermills, trip hammering mills, rolling mills, and wire drawing mills. One major way to classify watermills is by wheel orientation (vertical or horizontal), one powered by a vertical waterwheel through a Gear train, gear mechanism, and the other equipped with a horizontal waterwheel without such a mechanism. The former type can be further subdivided, depending on where the water hits the wheel paddles, into undershot, overshot, breastshot and pitchback (backshot or reverse shot) waterwheel mills. Another way to classify water mills is by an essential tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discharge (hydrology)
In hydrology, discharge is the volumetric flow rate (volume per time, in units of m3/h or ft3/h) of a stream. It equals the product of average flow velocity (with dimension of length per time, in m/h or ft/h) and the cross-sectional area (in m2 or ft2). It includes any suspended solids (e.g. sediment), dissolved chemicals like (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. Formulation 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 meas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karst
Karst () is a topography formed from the dissolution of soluble carbonate rocks such as limestone and Dolomite (rock), dolomite. It is characterized by features like poljes above and drainage systems with sinkholes and caves underground. There is some evidence that karst may occur in more weathering-resistant rocks such as quartzite given the right conditions. Subterranean drainage may limit surface water, with few to no rivers or lakes. In regions where the dissolved bedrock is covered (perhaps by debris) or confined by one or more superimposed non-soluble rock strata, distinctive karst features may occur only at subsurface levels and can be totally missing above ground. The study of ''paleokarst'' (buried karst in the stratigraphic column) is important in petroleum geology because as much as 50% of the world's Oil and gas reserves and resource quantification, hydrocarbon reserves are hosted in carbonate rock, and much of this is found in porous karst systems. Etymology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boesio
The Boesio is a river ( intermittent stream) in Valcuvia, a valley in the north of the province of Varese, Lombardy, Italy. It rises near Cuveglio and flowing in an east–west direction before entering Lake Maggiore at Laveno-Mombello. The river's course takes it through the communes of Cuveglio, Cuvio, Casalzuigno, Azzio, Brenta, Gemonio, Cittiglio and Laveno-Mombello. The state road SS 394 follows in part the course of the river. Fish found in the river include Salmonidae and Cyprinidae, in particular brown trout The brown trout (''Salmo trutta'') is a species of salmonid ray-finned fish and the most widely distributed species of the genus ''Salmo'', endemic to most of Europe, West Asia and parts of North Africa, and has been widely introduced globally ... and vairone (''Leuciscus souffia''). The waters of the river are polluted. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
