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23-576: The name is derived from the old Czech words bek , beč (i.e. 'cry'), meaning 'loud river'. From a water management point of view, the Bečva and Vsetínská Bečva are two different rivers with separate numbering of river kilometres . In a broader point of view, the Bečva (as Vsetínská Bečva) originates in the territory of Velké Karlovice in the Hostýn-Vsetín Mountains at an elevation of 896 m (2,940 ft) and flows to Tovačov , where it enters

46-663: A decree of 8 May 1790, the French National Constituent Assembly ordered the French Academy of Sciences to develop a new measurement system. In August 1793, the French National Convention decreed the metre as the sole length measurement system in the French Republic and it was based on ⁠ 1 / 10 ⁠ millionth of the distance from the orbital poles (either North or South) to

69-427: A positive effect on the high biodiversity around the river. There are dozens of endangered species of beetles (including six critically endangered species of beetles) and three endangered species of spiders. Protected birds bound to the river include the common kingfisher and the little ringed plover . The Bečva is suitable for river tourism and belongs to the rivers suitable for less experienced paddlers. The river

92-626: A snapshot of the use of the kilometre across Europe: the kilometre was in use in the Netherlands and in Italy, and the myriametre was in use in France. In 1935, the International Committee for Weights and Measures (CIPM) officially abolished the prefix "myria-" and with it the "myriametre", leaving the kilometre as the recognised unit of length for measurements of that magnitude. The symbol km for

115-518: Is just the name of the river and the location in river miles. In cases where there is ambiguity, for example when more than one stream has the same name, it uses a series of river mile strings referring to the distance to the ocean along either the Ohio River (and Mississippi River ) or through Lake Erie (and the Saint Lawrence Seaway ). Another example of a River Mile System is utilized by

138-443: Is navigable especially in spring and after the rains. Shoals form when the water level is lower. River mile A river mile is a measure of distance in miles along a river from its mouth . River mile numbers begin at zero and increase further upstream. The corresponding metric unit using kilometers is the river kilometer . They are analogous to vehicle roadway mile markers , except that river miles are rarely marked on

161-466: Is not widely used, use the second pronunciation with stress on the second syllable. The second pronunciation follows the stress pattern used for the names of measuring instruments (such as micrometer , barometer , thermometer , tachometer, and speedometer ). The contrast is even more obvious in countries that use the American spelling of the word metre . This pronunciation is irregular because it makes

184-470: The Equator , this being a truly internationally based unit. The first name of the kilometre was "Millaire". Although the metre was formally defined in 1799, the myriametre ( 10 000  metres) was preferred to the "kilometre" for everyday use. The term " myriamètre " appeared a number of times in the text of Develey's book Physique d'Emile: ou, Principes de la science de la nature , (published in 1802), while

207-461: The Gulf of Mexico . Mileages are indicated as AHP (Above Head of Passes) or BHP (Below Head of Passes). River miles are used in a variety of ways. The Commonwealth of Pennsylvania , in its 2001 Pennsylvania Gazetteer of Streams , lists every named stream and every unnamed stream in a named geographic feature in the state, and gives the drainage basin area, mouth coordinates, and river mile, specifically

230-608: The SI prefix for 1000 ). It is the preferred measurement unit to express distances between geographical places on land in most of the world; notable exceptions are the United States and the United Kingdom where the statute mile is used. There are two common pronunciations for the word. The first pronunciation follows a pattern in English whereby SI units are pronounced with the stress on

253-473: The "River Mile System of Ohio", which is "a method to reference locations on streams and rivers of Ohio". This work began by hand measurements on paper maps between 1972 and 1975 and has since been converted to a computer-based electronic version, which now covers the state in 787 river mile maps. Locations of facilities such as wastewater treatment plants and water quality measurement sites are referenced via river miles. Ohio uses one of two systems. The simplest

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276-539: The Bečva. There are 655 bodies of water in the basin area. The largest of them are the Karolinka Reservoir with an area of 44 ha (110 acres) and the fishpond Velký choryňský with an area of 36 ha (89 acres). The area around Bečva is prone to flooding and was severely damaged during the 1997 Central European flood . The construction of the Skalička dry pond is planned for the river. It will serve to regulate

299-676: The Morava River at an elevation of 195 m (640 ft). It is 121.0 km (75.2 mi) long, making it the 16th longest river in the country . Its drainage basin has an area of 8,854.2 km (3,418.6 sq mi). The name Bečva is used from the confluence of the Vsetínská Bečva with the Rožnovská Bečva in Valašské Meziříčí and from this point to the confluence with the Morava,

322-637: The U.S. Bureau of Reclamation, in New Mexico, on the Rio Grande. The river miles in Central New Mexico are measured from Caballo Dam upstream to near Embudo , New Mexico. For example, a river mile sign in the Albuquerque Bosque (part of Albuquerque's Open Space Park) is River Mile 184, approximately 184 miles above Caballo Dam . As mentioned earlier in this system the further you go up stream the higher

345-537: The distance from the mouth of the tributary to the mouth of its parent stream. Some islands are named for their river mile distance, for example the Allegheny River in Pennsylvania has Six Mile Island, Nine Mile Island, Twelve Mile Island, and Fourteen Mile Island. (The last two islands form Allegheny Islands State Park , although Fourteen Mile Island was split into two parts by a dam). The state of Ohio uses

368-688: The first syllable (as in kilogram , kilojoule and kilohertz ) and the pronunciation of the actual base unit does not change irrespective of the prefix (as in centimetre , millimetre , nanometre and so on). It is generally preferred by the British Broadcasting Corporation (BBC), the Canadian Broadcasting Corporation (CBC), and the Australian Broadcasting Corporation (ABC). Many other users, particularly in countries where SI (the metric system)

391-442: The flow during floods. Construction is planned for 2025–2029. Among the fish species found in the river are barbel , nase , European chub , trout , pike , sander and perch . The number of fish decreased significantly after the ecological disaster of 20 September 2020, when chemicals entered the river in an unknown way. About 40 tons of dead fish were caught, but actual losses may have been much higher. The absence of dams had

414-511: The kilometre the only SI unit with the stress on the second syllable. After Australia introduced the metric system in 1970, the first pronunciation was declared official by the government's Metric Conversion Board. However, the Australian prime minister at the time, Gough Whitlam , insisted that the second pronunciation was the correct one because of the Greek origins of the two parts of the word. By

437-683: The mouth. For example, the Willamette River (which discharges into the Columbia River ) has its river mile zero at the edge of the navigable channel in the Columbia, some 900 feet (270 m) beyond the mouth. Also, the river mile zero for the Lower Mississippi River is located at Head of Passes , where the main stem of the Mississippi splits into three major branches before flowing into

460-445: The physical river; instead they are marked on navigation charts, and topographic maps. Riverfront properties are sometimes partially legally described by their river mile. The river mile is not the same as the length of the river, rather it is a means of locating any feature along the river relative to its distance from the mouth, when measured along the course (or navigable channel) of the river. River mile zero may not be exactly at

483-630: The river is 61.6 km (38.3 mi) long. The sources and longest tributaries of the Bečva are: The most notable settlement on the river is the city of Přerov . The river flows through the municipal territories of Valašské Meziříčí , Lešná , Choryně , Kladeruby , Hustopeče nad Bečvou , Kelč , Milotice nad Bečvou , Zámrsky , Špičky , Černotín , Skalička , Ústí , Teplice nad Bečvou , Hranice , Jezernice , Týn nad Bečvou , Lipník nad Bečvou , Osek nad Bečvou , Radslavice , Prosenice , Grymov , Přerov, Rokytnice , Troubky and Tovačov . There are no reservoirs and fishponds built directly on

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506-569: The river mile number. This system is measured in 10ths of a mile. The U.S. Army Corps of Engineers uses river miles for its navigation maps. Kilometre The kilometre ( SI symbol: km ; / ˈ k ɪ l ə m iː t ər / or / k ɪ ˈ l ɒ m ə t ər / ), spelt kilometer in American and Philippine English , is a unit of length in the International System of Units (SI), equal to one thousand metres ( kilo- being

529-499: The term kilometre only appeared in an appendix. French maps published in 1835 had scales showing myriametres and " lieues de Poste " (Postal leagues of about 4288  metres). The Dutch, on the other hand, adopted the kilometre in 1817 but gave it the local name of the mijl . It was only in 1867 that the term " kilometer " became the only official unit of measure in the Netherlands to represent 1000  metres. Two German textbooks dated 1842 and 1848 respectively give

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