State television in North Korea shows scenes of flooding across the isolated, poverty-wracked country.
More than 100 people have died and over 84,000 have been left homeless by rising water levels - caused by a powerful typhoon in July.
United Nations officials - meeting in Switzerland - say the flooding has reached crisis point and could lead to famine and spread disease.
(SOUNDBITE) (English) PATRICK MCCORMICK, SPOKESMAN OF UNITED NATIONAL INTERNATIONAL CHILDREN'S EMERGENCY FUND (UNICEF), SAYING:
" Many of the wells have been contaminated by sewage we're especially concerned about children drinking contaminated water, diseases such as water-borne diseases sweeping through families who are in already desperate situations."
A UN report released last month said two-thirds of North Koreans - some 16 million people - already suffer from chronic food shortages.
Andrew Raven, Reuters