The collapse of the Arbaat Dam in eastern Sudan’s Red Sea state over the weekend resulted in flooding that destroyed nearby homes and killed at least 30 people, according to a United Nations agency.

The U.N. Office for the Coordination of Humanitarian Affairs (OCHA) reported late Monday, citing local authorities, that the actual number of fatalities from the dam collapse on Sunday could be higher. Additionally, approximately 70 villages surrounding the dam were affected by the flash flooding, with 20 villages completely destroyed.

The Arbaat Dam, situated roughly 38 kilometers (nearly 25 miles) northwest of Port Sudan, suffered significant damage due to heavy rainfall. The flooding in areas west of the dam either destroyed or damaged the homes of 50,000 people – representing 77% of the total population residing in that region. OCHA issued a warning that those affected are in urgent need of food, water, and shelter, adding that damage assessments are still ongoing in eastern sections of the dam.

More than 80 boreholes collapsed due to the flooding, according to OCHA, citing officials. Additionally, 10,000 livestock are missing, and 70 schools have either been damaged or destroyed.

Heavy rain and flooding across Sudan this month have impacted over 317,000 people. Of those affected, 118,000 people have been displaced, further exacerbating one of the world’s largest displacement crises stemming from the ongoing war in the country.

Tuesday marks 500 days since Sudan descended into war following the outbreak of fighting between the Sudanese Armed Forces and the Rapid Support Forces (RSF).

The conflict began in the capital, Khartoum, and has spread throughout Sudan, claiming the lives of thousands, destroying civilian infrastructure, and pushing many to the brink of famine. Over 10 million people have been forcibly displaced to seek safety, according to the U.N.

Medecins Sans Frontieres (MSF), or Doctors Without Borders, issued a statement on Tuesday, describing the situation as a “shameful moment” for international humanitarian organizations, which for over 16 months have “failed to provide an adequate response to the country’s escalating medical needs – from catastrophic child malnutrition to widespread disease outbreaks.”

“Simultaneously, heavy restrictions imposed by both warring parties have significantly hindered the ability to deliver humanitarian aid,” MSF stated.

Abdirahman Ali, CARE’s Sudan country director, issued a statement on Tuesday, warning that the war has “shattered” the healthcare system, “leaving countless without care.”

More than 75% of healthcare systems have been destroyed since the war began, according to an estimate in July.