The Aqua Marcia was
built in 144-140 bC and named after its builder, Quintus Marcius Rex. With this waterworks, built in 4 hard
years, people were provided with water of a better
quality. Also the distribution had improved. A special
technique was used building
this aqueduct (reversed
siphon), now they could ''conquer" a valley. At
the end of the first century bC they increased the water
supply by building other aqueducts, the Aqua Julia and
the Aqua Virgo (by 33 bC the arches of Aqua Marcia supported the Aqua Tepula and Aqua Julia as
well; see drawing).
These aqueducts were constructed
by Claudius and Nero in view of the water supply of
the higher districts, that still had a shortage of water.
aqueducts built by Claudius and Nero
had more style. The Aqua
Claudia, an aqueduct built in 38-52 bC
and named after the emperor Claudius provided Rome with water from a source 75
km away; it had a decline of 250 m. This meant that the aqueduct could only descend
1 m each 280 m of lenght. Most of the Roman
aqueducts were below ground. The Aqua Claudia i.e. was only 15
of its 70 km above ground. v
In a given moment of time 11 waterworks lead
to Rome; until the Goths cut down the water supply in 537.
restored by pope Nicolas V in the middle of the 15th
century (by the way, the Aqua Virgo remained in service
because this aqueduct was totally built underground!
See to the right; the same that still feeds the Fountain of Trevi;
click the picture for information on fountains).
The buried arches of the Aqua Virgo