In three major cities, Ibb, Dhamar and Al Mahwit, home to approximately 400,000 people, central water systems have shut down completely, heightening the risk of cholera and other diseases.
To date, UNICEF has only received about half of the US$4.16 billion needed to meet the basic health, education, nutrition and protection needs of 41 million children this year.
Insecurity is making it virtually impossible for humanitarians to provide aid in rural areas resulting in vulnerable people moving to overcrowded camps in urban areas for assistance.
Repairs have been made to the Alouk water station, which serves 400,000 Syrians. Generators are now being used to supply water to the population, including displacement camps.
In the last 24 hours, around 1,736 refugees crossed into Iraq according to Kurdish authorities - the highest number to cross in one day, since the beginning of the military operation.
MSF urges organisations to mobilise resources to mitigate the impact of rising flood levels in affected locations, and to ensure adequate attention is given to Pibor, in the east of the country.
Latest reports indicate nearly 40 per cent of Belet Weyne town has been affected by flooding with an estimated 72,000 people having moved to Ceel Jaale highlands and surrounding areas.
Setting up a mechanism for cross-border collaboration and the sharing of assets will contribute to the mitigation of suffering and minimize the social and economic impact of disease outbreaks.
The assistance will cover emergency health care services, food, livelihood support and protection services.
Almost 700,000 people are severely food insecure. FAO and WFP have developed a joint response plan requiring USD 50 million to address the immediate needs of 500 000 crisis-affected people.