Aqueduct of Avre

The aqueduct of Avre is one of the works which feeds the town of Paris in Drinking water. Inaugurated in 1893, it conveys 80 million liters (on a total of 680 million liters) per day since the area of Dreux in Eure-et-Loir.

The aqueduct of Avre belongs to the complex system of approvisonnement out of drinking water of the capital. This one includes/understands sources and deep wells distributed in a radius of 175 km around Paris on the one hand and the treatment plants of water of river on the other hand.

It is managed by SAGEP (Public limit company of management of water of Paris).

The routing of water is done by simple gravity. The altitude of the sources in the area of the Avre is higher of 40 meters than the level of the reserve of Saint-Cloud. Several sources are collected in the area of Dreux, in the storing reservoir of the river Avre.

Layout

The layout is roughly speaking parallel with that of the Paris-Dreux railway.

Starting point: Rueil-the-Gadelière (in the south of Avre).
Crossing of the Eure in the north of Dreux.
Not of arrival: tank of Montretout with Saint-Cloud.

Beyond the tank of Montretout, water is forwarded to the agglomeration of Paris. The crossing of the the Seine is done between Saint-Cloud and Boulogne-Billancourt, inter alia by a work built in 1891 by Gustave Eiffel which bears the name of footbridge or aqueduct bridge of Avre .

Characteristics

The aqueduct consists of a gallery, entirely in masonry at the origin, of 1,8 meter diameter generally posed in trench buried while following a regular slope.

Length of the principal Aqueduct: 102 km.
Diameter: 1,8 Mr.
average Slope: 30 cm/km (40 cm/km out of the first 20 kilometers).
Mean velocity of water: 2,25 km/h.
Siphons: 9 (overall length: 7 480 m, in particular crossing of the valleys of Meuvette, Pluche, the the Eure (1 708 m including 380 in arcades), of the Vesgre (2 150 m), of the Mauldre (922 m), of the Ru of Gally.
Arcades: 380 m (crossing of the valley of the Eure).
Tunnels: 26 km (including 7,3 between Versailles and Saint-Cloud).
Tank of Saint-Cloud: capacity of 426 000 m ³.

History

1884 : acquisition of the sources of the valley of the Eure by the town of Paris
July 5th, 1890: adoption of the bill for the Declaration of public utility
December 17th, 1890: presentation of the project of execution
Originator: Felix Eugene Edmond Humblot
Chief engineer: Fulgence Welcome
March 1893: end of work
1970: startup of new fields collecting in the valley of Avre and the Eure

Common crossings (of west in east)

Eure-et-Loir, over an overall length of 48 km:

Yvelines:

External bonds

the aqueduct of Avre on the site of Structurae
Site of the SAGEP: From which water comes from Paris

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