The aqueduct utilizes a precise gravity-fed gradient of approximately 1.5 meters per kilometer to transport water from the Jadro River.
During the 19th-century restoration, the structure was reinforced to function as a public utility once again, though this was later discontinued.
The mortar used in the construction contains crushed brick and volcanic ash, a technique that contributed to its long-term durability.
Segments of the aqueduct were incorporated into the walls of private houses in the Solin and Split suburbs during the post-Roman era.
The water supply was essential for the operation of the palace's advanced sewer system and thermal baths.
The Diocletian Aqueduct is a 1,700-year-old Roman engineering marvel located on the outskirts of Split, originally constructed to supply water to Diocletian's Palace. It stretches approximately 9 kilometers from the source of the Jadro River to the center of the palace complex. The structure features segments of elevated arches as well as subterranean tunnels carved into the bedrock. Much of the original stonework remains intact despite having been abandoned for centuries following the collapse of the Roman administration. Significant sections of the arches are visible today near the D8 road, while other parts remain hidden beneath modern residential development. The aqueduct was rediscovered and partially restored in the late 19th century.
The well-preserved arch section adjacent to the D8 road corridor in Solin.
Focus your visit on the best-preserved arch segments located near the Solin border rather than the heavily obscured urban sections.
Wear sturdy footwear, as the terrain surrounding the exposed arches is uneven and occasionally overgrown with Mediterranean scrub.
Bring a high-zoom camera, as many of the most dramatic arches are fenced off on private or inaccessible land.
Do not attempt to climb or walk along the top of the stone arches, as the masonry is fragile and potentially unstable.
