"Pont du Gard: the working bit of the aqueduct" Top 5 Page for this destination Pont du Gard - Roman Aqueduct Tip by CatherineReichardt
Pont du Gard - Roman Aqueduct, Avignon: 20 reviews and 25 photos
This is the 'working end' of the aqueduct and I found it absolutely fascinating to realise just how it works.
The main body of the aqueduct is merely a support mechanism for the meticulously graduated canal at the top. The aqueduct was designed so that the water flowed from the source at Fontaine d'Eure (near Uzès) to the discharge point at Nîmes under gravity, so it was vital that the channel sloped at a gentle but regular angle to keep the water flowing. As a result, there is a 17m height difference between one side of the aqueduct in order to maintain an elevation difference of only 0.025m (ie 2.5cm) in the waterbearing canal between one side and the other.
The precision engineering and surveying that this required is quite extraordinary and makes you realise yet again what a true engineering marvel this structure is.
Unfortunately it is only possible to access the canal on top of the aqueduct at certain times of the year - sadly it was closed to the public when we visited, and this photo is taken through the gate. The section of canal over the bridge is covered - which would serve to reduce evaporation and also minimise the risk of windborne debris blowing into the channel - and it must be absolutely amazing to walk through this covered section. Next time!!!
Address: La Bégude,b400 Route du Pont du Gard, 30210 Vers-Pont-du-Gard
Directions: Av. du Pont Gard (D981) Across Le Gard Ou Gardon
Phone: 04 66 37 50 99
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