ANGELA UKOMADU PEOPLE wade through fast-flowing water, holding one another to avoid being swept away, balancing suitcases, clothing and food on their heads. The torrent was, until recently, the East-West Road in Nigeria's Rivers state, the gateway to the nation's oil and gas. Now parts of Rivers, along with large swathes of 32 other states, are inundated by the worst flooding in 12 years. "We cannot access Ahoada West anymore," local government chairman Hope Ikiriko said of the area he represents. He said 30 boats were helping to move people to camps built to accommodate the area's 150,000 displaced. "We…