Brass River In 2005 the Nigerian Agip Oil Company (NAOC) was producing oil from 146 wells, and operated an export terminal at Brass River. Brass River Crude Oil is a sweet medium light crude. In the 17th and 18th centuries the Portuguese controlled the Brass River, which was closed to British traders and was an outlet for shipping slaves to the Americas. The town of Brass was inaccessible, reached only via the creeks. After 1807 the British began trying to suppress the slave trade. Don Pablo Frexas, in alliance with the chiefs of Brass and Bonny, was the main organizer of the
Brass River at Yenagoa and flows south to discharge into the Gulf of Guinea. The tidal flats of the river have a reticulate drainage pattern, with higher elevation at the edges of the flats than at the center. Discharge varies depending on the season and state of the tide: An 1893 navigation guide says of the river, The mouth of the river is protected by a sand bar, which in 1893 could not be crossed by vessels with more than draft. Akassa creek, inland from the mouth of the river, provided a route from the Brass river to the Nun river for