The city lies on the Mbéré River (a tributary of the Western Logone) some 475 kilometres south of the capital N'Djamena.

Chief of the district of the Middle Logone in 1925, Reverdy, who became a director in 1927, completed an uninterrupted stay for five years and eight months.

On 20 April 1930, Governor Georges Prouteaux of Oubangi-Chari (the district was attached to Oubangui-Chari in 1926) signed a decision reorganising the "indigenous of the Middle Logone" by creating 40 cantons, divided into five subdivisions.

In the animist country, custom only recognised clan chiefs or war or initiation leaders, who were strictly specialised and temporary.

[7] Reverdy[6] (called Baoguel, the "Left-Handed", in the Ngambay language)[3] urbanised the post of Moundou that he established.

He planted the flowers (from February to May) that line the roads of Moundou, which became the origin of the nickname of the city during the colonial period, "Moundou-la-Rouge".

Moundou receives 1,082.8 millimetres (42.63 in) of rain over 85 precipitation days, with a distinct wet and dry season like most tropical savanna climates.

There are four quarters or municipal districts of Moundou, further subdivided into 20 neighbourhoods:[13] The city has an industry of ginning and processing of cotton (oil and soap) under CotonTchad.

The road runs from Léré on the border with Cameroon, through Pala, Kélo, Moundou, Doba, Koumra and Sarh.

[21][22] The town is served by Moundou Airport (IATA: MQQ, ICAO: FTTD), with a paved runway.