Corubal River
The Corubal, also known as the Rio Corubal, is a river of West Africa, a major tributary of the Geba River. For a short distance, it forms the international border between Guinea and Guinea-Bissau. It has a length of approximately 560 kilometres (350 mi).
During the Portuguese Colonial War in February 1969, the Portuguese army, while retreating from territories in the Madina do Boe sector, lost 47 men while crossing the Corubal. The incident became known as the Cheche Disaster.
A protocol agreement called the "Corubal River Agreement" was signed on 21 October 1978 at Conakry by the Republic of Guinea and the Republic of Guinea Bissau to develop and manage the Kaliba-Koribal River; the Corubal River is also called the Kaliba. The "Organization pour La Misa en Valour de Fleuve Gambia (OMVG)" also known as "The Gambia River Basin Development Organization" was also agreed to be established to study and develop management plans for projects on the Gambia River, the Geba River and the Corubal River for power generation, irrigation, flood control, navigation, water quality and infrastrcutre. The agreement has also recognized the total basin area of the Corubal River of 24000 km2 with 17500 km2 (72.71%) in Guinea and the balance 27.02% in Guinea Bissau. OMVG have studied four sites for development as hydro-electric power projects. The projects are, the Sambangalou on the River Gambia, the Fello Sounga and Saltinho Projects on the River Koliba/Corubal, and the Gaoual Project on the River Géba. However, the general agreement does not have any relevant substantive and procedural rules governing cooperation between Guinea and Guinea-Bissau. Hence it has been suggested that recourse should be taken to "The United Nations Convention on the Law of the Non-Navigational Uses of International Watercourses“ which is a global instrument, adopted in 1997, to promote the equitable and sustainable development and management of river basins shared by two or more states. Using the provisions of this convention the existing agreement between the two basin states on development of Corubal River would need to be enlarged making specific provisions for "informing and guiding cooperation, as well as by providing the technical committee with legal guidance for better implementing its activities."
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