Shortly afterwards, it passed into the hands of the rulers of the Kannauj, who appointed Khande Singh as the Governor of the place.

Unwant Rai Singh, a Bisen Rajput and a lieutenant of the Governor, killed him and built a fort here, renaming the place as Unnao after himself.

[citation needed] Kavi Kalash (Chandogamatya), Advisor, Commander and a close friend of Chhatrapati Sambhaji Maharaj were born here.

Later, in 1970s the custody of Unnao was succeeded by his descendant and his very own son Rao Ramsajeevan Singh Bahadur Chauhan, who had also served his country in Royal Indian Army.

Additionally, the rural areas of Deeh, Dostinagar, Turkmannagar, Ganjauli, Singrosi, Shakpur, Magarwara, Akrampur, Galgalha, Sahjani, Maswasi, Haibatpur, Kathadal Narainpur, and Dhaudhi Rautapur contribute to a total population of 303,224.

Other significant rivers in the district include the Kalyani, Tanai, Loni, and Morahi (Naurahi), all of which are tributaries of the Ganga.

Although these rivers tend to run dry during the hot weather, they typically hold water for most of the year and are used for irrigation purposes.

The water from the river would need to pass through the sandy banks, leading to significant loss or absorption.

The main channel of the river experiences constant changes, resulting in shifting cultivation practices in its immediate vicinity.

There is the unusually large number of swamps and lakes of great size and value, particularly in the southern and eastern parts of the district.

In Tehsil Hasanganj, besides the Kundra Samundar at Mawai, there are the Kulli Bani and Jalesar tanks near Ajgain and the chain of lakes called Basaha, which it seems, partakes of certain characteristics of a stream also, travelling a distance of 96 km in the district and eventually leaving it for district Rae Bareli where it is reckoned as a tributary of the river Sai.

In Tehsil Unnao there are no important lakes, but a number of very shallow depressions, which get filled up with water during the rains and yield excellent crop of rice.

The main among them are the lakes at Kantha, Bhadain, Unchagaon, Qila, Akhori, Miri, Zorawarganj and Sarwan.

Geologically the district forms part of the vast Indo-Gangetic alluvial tract, of which the origin is attributed to a sag in the Earth's crust, formed, in the upper eocene times, between the northwardly drifting Gondwanaland and the rising Himalayan belt, and gradually filled in by sediments so as to constitute a level plane with a very gentle seaward slope.

The alluvium formation of the district, comprising sand, silt and clay with occasional gravel, is of the early quaternary to sub-recent age.

The older alluvium called bhangar, forms slightly elevated terraces usually above the flood levels.

It is rather dark in colour and generally rich in concretions and nodules of impure calcium carbonate, locally known as kankar.

The newer alluvium, called khandar, forming the lowlands between the Ganga and Bhangar, is light coloured, poor in calcareous contain and composed of lenticular beds of sand, gravel and clays.

The entire district falling in Sai Sub-basin of the Ganges basin represents flat topography.

[7] There are 538 government health care facilities in the district, as can be seen from the table given below: Tanning is the biggest industry in Unnao.

Engineering Colleges are approved by AICTE and affiliated to Dr A P J Abdul Kalam Technical University, Lucknow.

Unnao railway station is the junction point for Rae Bareli, Unchahar, Kunda Harnamganj, Prayag, Allahabad, Hardoi, Balamau situated at Lucknow-Kanpur stretch.

Trains for major cities like Agra, Ahmedabad, Bangalore, Bhopal, Nagpur, Vijaywada, Chennai, Coimbatore, Palakkad, Bhubaneswar, Bhadrak, Cuttak, Chennai, Chandigarh, Chitrakoot, Cochin, Delhi, Gorakhpur, Ernakulam, Hyderabad, Jaipur, Jammu Tawi, Jhansi, Jalandhar, Amritsar, Panipat, Gorakhpur, Gwalior, Darbhanga, Kota, Mumbai, Nagpur, Patna, Puri, Surat, Trivandrum, Vadodara, Ujjain, Varanasi, Vadodara, can be boarded here.