Nicaea Aqueduct
About
An inscription found along its route names Hadrian as dedicatee, dating the standing arches east of İznik's Lefke Gate to his reign rather than Trajan's. About 1.5 kilometers of the channel is still visible on the ground, though the masonry was rebuilt repeatedly under later Byzantine and Ottoman rulers, and a geophysical survey found a fault line warping its foundations. Hadrian only became emperor the day Trajan died, so this aqueduct almost certainly rose just after our snapshot.
What happened here
Water arrives day and night and never stops. The channel runs mostly underground, following a shallow gradient measured out with a levelling instrument over tens of miles, and it goes up on arches only where the ground drops away. Inspection shafts sit at intervals; gangs work the line constantly, cutting out the lime crust that thickens on the walls and narrows the flow. At the town end the water is divided in a distribution tank — public fountains first by law, then baths, then private houses whose owners have paid for a pipe of a fixed and stamped size. Illegal tappings are a permanent scandal. What arrives is not stored but runs continuously, and the overflow flushes the drains.
Sources
Nearby
Roman Maps shows the empire frozen at 11 August 117 CE, the day Trajan died — its moment of greatest territorial extent. Explore the full map →

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