The Rima River is a river in the northern part of Nigeria

Nigeria

Nigeria , officially the Federal Republic of Nigeria, is a federal constitutional republic comprising 36 states and its Federal Capital Territory, Abuja. The country is located in West Africa and shares land borders with the Republic of Benin in the west, Chad and Cameroon in the east, and Niger in...

. At its northern most point it is joined by the Goulbi de Maradi river

Goulbi de Maradi river

The Goulbi de Maradi river is a river in south central Niger and north central Nigeria. Between its source near Katsina in Nigeria, and its end in the Rima River, the Goulbi de Maradi never flows more than 30 miles from the Niger/Nigeria border...

. It runs southwest and joins the Sokoto River

Sokoto River

The Sokoto River is a river in north-west Nigeria and a tributary of the River Niger. The river's source is near Funtua in the south of Katsina State, some 275 km in straight line from Sokoto...

 near Sokoto

Sokoto

Sokoto is a city located in the extreme northwest of Nigeria, near to the confluence of the Sokoto River and the Rima River. As of 2006 it has a population of 427,760...

, then continues south to the Niger River

Niger River

The Niger River is the principal river of western Africa, extending about . Its drainage basin is in area. Its source is in the Guinea Highlands in southeastern Guinea...

. The upper Rima is a seasonal river and flows only during the rainy season.
The Zauro polder project

Zauro polder project

The Zauro polder project is an irrigation scheme that has long been planned for the Rima River floodplain in Kebbi State, Nigeria. The project is controversial, and would demand careful management to achieve the planned benefits.-Location:...

, a major irrigation scheme, has been planned for many years. It would irrigate 10,572 hectares of farmland in the Rima floodplain between Argungu and Birnin Kebbi.