How did Roman aqueducts deliver water uphill without pumps?
Ancient engineering that modern cities still can't beat for elegance.
The answer
Roman aqueducts used gravity alone to transport water over distances up to 100 kilometers, relying on a precise downward gradient of roughly 1:4,800 (about 20 centimeters per kilometer). They didn't actually carry water uphill - the famous arched bridges were used to maintain a gentle downhill slope across valleys. The system delivered over 1 million cubic meters of water to Rome daily, providing each citizen with more water per capita than many modern cities supply today.
Source: Smithsonian Magazine
- Roman Empire
- engineering
- water
- architecture
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