To the south, their drainage supplies two distinct river systems, one of which debouches in comparatively small streams on the Gulf of Cambay, while the other unites to form the Chambal river, a great southern tributary of the Jumna, flowing thence via the Ganges, into the Bay of Bengal on the other side of India.
The imperial palace, the Jama Masjid or Great Mosque, and the restoration of what is now the western Jumna canal, are the work of Shah Jahan.
It consists of a strip of territory on the right or west bank of the Jumna river, 75 m.
Most of the district consists of hard and stony soil, depending upon irrigation, which is supplied by the Western Jumna canal, the Ali Mardan canal and the Agra canal.
The river Jumna, which washes the walls of its fort, was the natural highway for the traffic of the rich delta of Bengal to the heart of India, and it formed, moreover, from very ancient times, the frontier defence of the Aryan stock settled in the plain between the Ganges and the Jumna against their western neighbours, hereditary freebooters who occupied the highlands of Central India.