More than 40 farmers and business owners in the Oroville area sued the state Wednesday over the effects of the Oroville Dam crisis, seeking hundreds of millions of dollars in damages. The giant lawsuit against the California Department of Water Resources was filed by the same law firms representing the city of Oroville in a suit it filed in early January against DWR. It accuses DWR of harboring a “culture of corruption and harassment” that compromised dam safety and led to last February’s near-catastrophe.