Nagar River is in the Bogra District

Bogra District

Bogra is a northern district of Bangladesh, in the Rajshahi Division. It is called the gateway to the north Bengal. It is an industrial city where many small and mid sized industries are housed. Bogra district was a part of the ancient Pundravardhana territory and Bogra was the capital of...

 of Bangladesh

Bangladesh

Bangladesh , officially the People's Republic of Bangladesh is a sovereign state located in South Asia. It is bordered by India on all sides except for a small border with Burma to the far southeast and by the Bay of Bengal to the south...

:

Early history

The Nagar is a branch of the Karatoya and serves as the
boundary between the Sibganj and Bogra thanas, for about
seven miles. It then passes between the former ana the Dhup chanchia thana and then Adamdighi down to the village

Village

A village is a clustered human settlement or community, larger than a hamlet with the population ranging from a few hundred to a few thousand , Though often located in rural areas, the term urban village is also applied to certain urban neighbourhoods, such as the West Village in Manhattan, New...

 of
Champapur. It then turns off west wards and passing through
the Dupchanchia thana enters Rajshahi district. It falls in
the Atrai, near the Singra thana in the Rajshahi district

Rajshahi District

Rajshahi District is a district in north-western Bangladesh. It is a part of the Rajshahi Division. The metropolitan city of Rajshahi is in Rajshahi District.-Geography:...

.
It is a tortuous river, and its whole length in this district,
including the windings is about 30 miles. On its banks are
situated the important villges of Elahiganj and Dhupchanchia.
It is navigable by boats only during the rainy season.