BEIJING, Aug. 14 (Xinhua) -- China's Ministry of Emergency Management (MEM) on Friday said it had dispatched rescue personnel to Zhoukou City in central China's Henan Province, after heavy rainfall brought by the remnants of Typhoon Dolphin swelled rivers and triggered a levee breach at around 11 p.m. Thursday.

The rescue force comprises 200 engineering rescue personnel from China Anneng Group and 110 sets of large engineering equipment. Rescuers arrived on Friday and joined emergency operations, according to the ministry.

The National Commission for Disaster Prevention, Reduction and Relief on Friday activated a Level-IV national disaster relief emergency response for Henan in response to the severe impact of Typhoon Dolphin, the year's 13th typhoon, and heavy rainfall.

Chinese authorities have allocated 30,000 items of central disaster relief supplies, including folding beds, summer quilts and family emergency kits, to support relief and resettlement efforts for affected residents in Zhoukou, Xuchang and other affected areas.

The relief supplies were dispatched on Friday by the commission's office, the MEM, and the National Food and Strategic Reserves Administration.