Pont du Gard: Water for the City
p2La révolte de Vercingétorix · ANTIQUITY
A symbol of Roman engineering genius, the Pont du Gard is only one part of a vast aqueduct stretching over 50 km, built to supply water to the city of Nîmes.
📏 An incredible technical challenge
The water had to flow naturally by gravity.
Over a distance of 50 km, the total drop is only 12 meters.
That’s a slope of just 24 cm per kilometer.
👉 A level of precision that still impresses modern engineers.
🏗️ A monumental construction
The bridge spans the Gardon River and is made of three tiers of arches:
- Lower level: 6 arches (supports the structure)
- Middle level: 11 arches
- Upper level: 35 arches (carries the water channel)
It reaches a height of 49 meters, making it the tallest Roman aqueduct bridge ever built.
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🛁 Why so much water?
A Roman city required a huge amount of water:
- for public fountains, flowing continuously
- for bath complexes (thermae)
- for private villas and gardens
Water was not only about hygiene —
👉 it was also a symbol of wealth and civilization.
🧠 Key takeaways
- 50 km aqueduct with an extremely gentle slope
- 49 meters high, with 3 levels of arches
- Built without mortar — stones held by their own weight
- Supplied water to the Roman city of Nîmes
📸 Image credits
- Pont du Gard — [CC BY-SA 4.0], via Wikimedia Commons