South Sudan: Floods Snapshot (As of 23 October 2025)
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South Sudan continues to experience severe and widespread flooding, with conditions worsening across multiple states. As of 23 October, an estimated 960,600 people have been affected in 26 counties across six states, with Jonglei and Unity accounting for more than 92 per cent of the total caseload. Some 335,000 people have been displaced across 16 counties, many seeking refuge on higher ground. The flooding further compounds an already critical humanitarian situation characterized by acute food insecurity, ongoing conflict, and disease outbreaks. Since September 143 health facilities have been affected by floods, including 44 fully submerged or damaged, disrupting access to essential health services for thousands, particularly in Jonglei and Unity States.
In Unity State, an estimated 63,000 people have been affected in 16 payams of Leer County, including 23,000 displaced. A Rapid Needs Assessment conducted on 17–18 October in Canal/Pigi County (Jonglei State) and Panyikang County (Upper Nile State) identified an additional 75,000 people as severely affected. According to the Centre for Humanitarian Data, as of 21 October, overall flood exposure in South Sudan remains below the peaks of 2021, 2022, and 2024, yet still well above historical averages. Upper Nile currently shows slightly above-normal levels, while Jonglei and Unity are experiencing conditions comparable to past major flood years.
Despite significant access challenges in Unity, Upper Nile, and Jonglei States, humanitarian partners continue to deliver life-saving assistance and conduct assessments to strengthen the ongoing response. On 21 October, the International Organization for Migration (IOM) and the Ministry of Water Resources and Irrigation signed an agreement to bolster flood defenses in Bor Town. Through an $8.5 million investment, IOM will construct flood-resilient infrastructure and rehabilitate 95 km of drainage channels, aiming to protect up to 70 per cent of Bor Town’s population from recurrent flooding.