Medieval aqueducts

Timeline

1. c. 500–1000Italy and Iberia · IberiaAfter the fall of the Western Roman Empire, local authorities and monasteries maintained Roman aqueducts and underground channels section by section; some cities shrank as water supply declined, while others relied on surviving channels to maintain basic water supply.
2. c. 900–1140Al-Andalus · Al-AndalusIslamic-ruled Iberia developed acequia irrigation canals and arched water-conveyance systems, combining water wheels and reservoirs to provide a steady water source for urban gardens and farmland; the technology influenced Christian regions through Mediterranean exchange.
3. c. 1141–1150Segovia and Palermo · SicilyIn the 1140s, the Roman aqueduct of Segovia continued to supply the city, while Norman rulers in Sicily expanded water systems in Palermo and elsewhere; the combination of stone-arched aqueducts and underground channels supported 12th-century urban population growth and monastic expansion.
4. c. 1200–1500Southern France and Italy · ItalyAfter the 13th century, new stone-arched aqueduct bridges were built in Provence, Tuscany, and elsewhere, blending the Roman arch tradition with Gothic-period engineering experience, laying the foundation for large-scale Renaissance water-supply projects.