An influx of internally displaced persons (IDPs) fleeing non-state armed group violence is stretching shelter capacity and services in the Government Senior Secondary School (GSSS) camp for IDPs in Bama Local Government Area in Borno State. In July 2021, 928 people arrived at the already congested camp reception centre. A relocation of 500 people to the GSSS camp is also being planned in the coming days. In addition to the new influx, recent flash floods from heavy downpours have damaged or destroyed several shelters as well as critical water, sanitation, and hygiene facilities, affecting hundreds of internally displaced families. The GSSS camp, which hosts over 43,000 people, is one of the most overcrowded IDP sites in the region. Partners are struggling with the limited space to support the increasing population influx and to mitigate water-borne disease outbreak risks during the ongoing rainy season.