This page compiles publicly available information from Bihar's Water Resources Department and Disaster Management Department as of August 2026. Flood conditions change every season — this page is for general awareness and preparation only; always follow local administration and official alerts during an actual emergency.

Udakishunganj block and Madhepura district lie in the Kosi river basin, one of Bihar's most flood-prone regions. Every monsoon season (June–October), heavy rainfall in Nepal followed by water release from the Birpur Kosi barrage can trigger flood alerts across Supaul, Saharsa, and Madhepura districts.

Official source: Bihar Water Resources Department's Kosi Flood Forecasting and Early Warning System (Kosi-FFEWS, fmiscwrdbihar.gov.in) provides water-level forecasts for the Kosi river and its tributaries up to 72 hours in advance. At the district level, the Madhepura disaster management branch (via madhepura.nic.in) issues local alerts.

Signs to watch for during flood season

  • News of water release from the Birpur barrage — usually reported via local news and the district administration
  • Sustained heavy rainfall (locally and in upstream areas of Nepal)
  • Steadily rising water levels in low-lying and riverside villages

What to do to prepare

Before flood season, keep essential documents (Aadhaar, ration card, land papers) in a waterproof bag, identify a raised storage location for livestock and grain in advance, and note down the contact numbers for your panchayat/ward member and the nearest disaster relief centre. The Block office coordinates relief camps and boat services during flooding.

Emergency help: during a flood or any disaster, contact the Bihar State Disaster Management Department helpline at 1070 (state level), or check with your nearest Circle/Block office for relief camp information.

The bottom line

Families living in the Kosi basin need to stay alert through monsoon season. Learn more about the Block office's disaster-coordination role in our BDO office guide and our Kosi river & geography guide.