Mohanjodaro and Harappa, Like other Indus Valley sites, had wide roads
                          cutting thorugh the buildings.
Wide roads in Mohenjodaro and other Harappan sites
Drainage System
The most important salient feature is perhaps the largescale use of burnt-brick
drains. The drainage system seems to have been quite extensive, at least at
Mohenjodaro and Lothal. At both places, there are drains in all the larger
streets and quite often, in the smaller lanes also. Primarily meant to carry off
the waste household water, they were connected as such in most cases,
through a water chute, with the smaller drains of the houses. The width and
depth of the drains varied. At Mohenjodaro, the general width might be
around 9 ins.
    They were also subjected to regular cleaning. Stone slabs or bricks were
put as covers over them in such a way that they could easily be removed for
the purpose of cleaning. The general masonry of the drains was careful and
the bends were carefully rounded so that the general flow of water was not
impeded at any point. Besides, brick culverts, meant for the discharge of the
collected water from the city-drains, have been reported from the outskirts of
    For the sewerage, there were not only drains but also soak or sediment
pits in places. Sometimes, they