| 词条 | Dorlay |
| 释义 |
| name = Dorlay | image = | image_size = | image_alt = | image_caption = | map = | map_size = | map_alt = | map_caption = | source1_location = Mont Pilat | mouth_location = | progression = {{RGier}} | subdivision_type1 = Country | subdivision_name1 = France | subdivision_type2 = Location | subdivision_name2 = Rhône-Alpes | etymology = | length = {{convert|15.6|km|mi|abbr=on}} | source1_elevation = | mouth_elevation = | discharge1_avg = | basin_size = | tributaries_left = | tributaries_right = | custom_label = | custom_data = }}{{Location map | France | width = | float = | border = | caption = The Dorlay in France | alt = | relief = y | lat_deg = 45.510204 | lon_deg = 4.570944 }} The Dorlay is a French river that flows through the Loire department. It is a tributary of the Gier, which in turn is a tributary of the Rhone. The Gier valley was formerly heavily industrialized with coal and iron mines and factories. BasinThe Dorlay rises in Mont Pilat.{{sfn|CESAME|2010|p=46}} It is {{convert|15.6|km}} long. Tributaries are the Artiole, Mornante and Sellon.{{sfn|Castan|Decq|Ozanam|2006}} The Mornante and Sellon are known for the presence of white-clawed crayfish, a heritage species. The catchment area is about {{convert|50|km2}} The source of the river is at an altitude of over {{convert|1400|m}}, while the average elevation of the basin is {{convert|730|m}} The upper part of the basin is forested or pastureland.{{sfn|CESAME|2010|p=6}} CommunitiesA manuscript of 1200 gives the river the Latin name of Dorleum. In 1224 it is called Aqua de Dorllei. Subsequent mentions call it Rivus de Dorlay (1359), Dorleys (1527), Dourley (1718) and Dourlay (1789).{{sfn|Dufour|1946|p=289}} It flows through the communes of La Grand-Croix, Saint-Paul-en-Jarez, Lorette, La Terrasse-sur-Dorlay and Doizieux.{{sfn|Le Dorlay: Sandre}} In the past, the river powered many weaving workshops in the valley.{{sfn|Castan|Decq|Ozanam|2006}} DamConstruction of a dam on the Dorlay by the town of Rive-de-Gier was discussed in 1884 but the project was abandoned due to cost.{{sfn|Assemblée nationale - Sénat|1885|p=90}} Today's Barrage du Dorlay is located at {{coord|45.443302|4.578356|display=inline}} on the river between Doizieux and La Terrasse-sur-Dorlay. It was built between 1971 and 1973. The dam has a storage capacity of {{convert|2500000|m3}}, with a catchment area of about {{convert|24.4|km2}}.{{sfn|CESAME|2010|p=46}} It is at an altitude of about {{convert|500|m}}.{{sfn|CESAME|2010|p=6}} The dam supplies potable water to the municipalities of Lorette, Chateauneuf, Chagnon, Cellieu, St-Paul-en-Jarez, La Grand-Croix and part of Rive-de-Gier. In 2008 it supplied about {{convert|1370000|m3}} of water to about 22,630 people.{{sfn|CESAME|2010|p=47}} Since the dam is used for drinking water, swimming is not allowed - but some people swim anyway. Some local people use the dam for canoeing, but there are no rental boats.{{sfn|CESAME|2010|p=89}} CoalIn 1730 a large coal seam was found along the Dorlay. A number of mines were sunk to a depth of {{convert|40|m}} or more. These were worked for a short period, then abandoned due to lack of pumping equipment. Mining resumed in 1776 with pumps operating, but was abandoned in 1792 due to the volume of water entering the mines from the Dorlay.{{sfn|Meugy|1848|p=22}} The river's path marks a geological fault in the Loire coal basin.{{sfn|Gruner|1882|p=51}} In 1838 the Saint-Philippe mines were sunk on the right bank of the Dorlay to a depth of {{convert|170|m}}, but did not find any significant coal deposits.{{sfn|Meugy|1848|p=121-122}} ReferencesCitationsSources{{refbegin}}
|author=Assemblée nationale - Sénat|title=Annales du Sénat: Documents parlementaires. (Nouv. sér.) |url=https://books.google.com/books?id=yvkOAQAAIAAJ&pg=PA90|accessdate=2013-08-20 |year=1885|publisher=Imprimerie du Journal officiel}}
|last1=Castan|first1=Florence|last2=Decq|first2=Gérard|last3=Ozanam|first3=Mathieu|author4=Emmanuelle Berne |title=Petit Futé Saint-Etienne|url=https://books.google.com/books?id=Bx-hlQeTRDAC&pg=PA308|accessdate=2013-08-20 |date=2006-07-27|publisher=Nouvelles Editions de l'Université|isbn=978-2-7469-1553-4|page=308}}
|author=CESAME |date=March 2010|title=Prélèvements et gestion quantitative de la ressource sur le bassin versant du Gier Phase 1 |publisher=Saint-Etienne Metropole|accessdate=2012-08-20}}
|last=Dufour|first=J.-E.|title=Dictionnaire topographique du département de la Loire|url=https://books.google.com/books?id=sc3ZNHd0h3YC&pg=PA289|accessdate=2013-08-20 |year=1946|publisher=Université de Saint-Etienne|isbn=978-2-86272-412-6|page=289}}
|last=Gruner|first=Louis Emmanuel|title=Bassin houiller de la Loire|url=https://books.google.com/books?id=QeURAAAAIAAJ&pg=PA51|accessdate=2013-08-20 |year=1882|publisher=Ministère des travaux publics, Service des topographies souterraines|page=51}}
|title=Le Dorlay (V3110500)|work=Sandre|accessdate=2013-08-20}}
|last=Meugy|first=Alphonse|title=Historique des mines de Rive-de-Gier, Loire|url=https://books.google.com/books?id=-ZjEVvucklYC&pg=PA22|accessdate=2013-08-20 |year=1848}}{{refend}}{{DEFAULTSORT:Dorlay}} 3 : Rivers of France|Rivers of Auvergne-Rhône-Alpes|Rivers of Loire (department) |
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