SEOUL, June 27 (UPI) -- South Korea's Unification Ministry on Friday asked North Korea to give advance notice before releasing water from a dam across the border on the Imjin River, citing safety concerns for residents living in nearby areas. "We request that North Korea notify us in advance of dam discharges to prevent flood damage in the border area during the rainy season on humanitarian grounds," ministry spokeswoman Chang Yoon-jeong said at a press briefing. "Joint response to natural