Aqueduc du Gier - Mornant
Posted by: 
arby101ca
N 44° 37.279 E 004° 39.935
31T E 632135 N 4942234
The ancient Roman "Aqueduc du Gier" flowed from Mont Pilat to Lyon. At Mornant it crosses Mornantet creek on a series of arches. Here there is a historical marker, an engraved plaque, describing the aqueduct.
Waymark Code: WMPFQM
Location: Auvergne-Rhône-Alpes, France
Date Posted: 08/24/2015
Views: 12
This information is based on the historical marker at the site. The Aqueduc du Gier is a remarkable example of Roman engineering, built in the 1st century CE at the time of Emperor Hadrian. It is the longest and highest of the four aquaduct built to provide water for the Roman capital of the region, Lugdunum (Lyon). Rising high on the slopes of Mont Pilat it descends on a sinuous route about 85 km. The water flowed mostly in underground tunnels but the route has 25 bridges and 4 siphons crossing valleys en route to Lyon. At Mornant, the canal at the top of the arch is at an elevation of ~360 m and Fourviere, Lyon, ~75 km downstream is at ~294 m so the gradient is just under 1 m/km. The flow is reported to be 24,000 m3 per day on the plaque.
At this site you can see a couple of surviving arches, the canal dug in the hill side and the start of the longest tunnel, 2000 m under the town of Mornant
Qui a placé ce repère historique ? / Who placed this historical marker ?:
I do not know who placed the plaque of when but it is listed as #8 on than audio guide likely available at the local tourist office
Site internet / Internet Website: [Web Link]
Date de placement / Date of establishment: Not listed
Eléments cryptés / Encrypted elements: Not listed
Conditions de visite alternatives / Alternative visit requirements: Not listed
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Visit Instructions:
[FR] Une preuve de votre visite est demandée. Joignez à votre log une photo du repère historique et culturel ou répondez à la question alternative proposée par l'owner quand elle existe (si vous ne pouvez joindre de photo).
[ENG] A proof of your visit is needed. Join a picture from the historical and cultural marker to your log or respond to the alternative question proposed by owner if available (if you can't provide a picture).