The International Federation of Red Cross and Red Crescent Societies (IFRC) said 214 were killed and 80 are missing in what it previously called the worst floods to hit the impoverished country in a decade.
The acting head of the IFRC delegation in Pyongyang, Terje Lysholm, told AFP by phone that the figures -- the first detailed casualty count -- came from the government.
Up to 300,000 people lost their homes, according to official data, and more than 10 per cent of the grain harvest -- equivalent to some 450,000 tonnes -- was lost in a country which already needs foreign aid to feed its people.
In the latest in a series of unusually detailed reports from the reclusive state, an official broadcasting station said main roads, including one linking the capital Pyongyang to the eastern city of Wonsan, were badly damaged.
"Korean People's Army soldiers are also out in force to stage hectic struggles to restore roads," it said, as quoted by Seoul's Yonhap news agency.
Parts of the showpiece capital lost power, and bus and subway services were hit, Kim Sung-Gwan of the electric power ministry told Pyongyang radio.
Power equipment in the western provinces of North Hwanghae and South Pyongan was inundated or damaged in the floods, causing blackouts.
Official media has said more than 30,000 houses for over 63,300 families have been destroyed, along with at least 800 public buildings and more than 540 bridges and sections of railway. - DDNEWS