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Gandak embankment damage raises flood risk in Bihar and Uttar Pradesh

Flood

Severity score8 / 100 · Watch

How the score is calculated

The score starts at 8. It adds points from recorded affected, deaths, displaced and casualty counts, plus terms found in the story title, event type or status. For each count, only its highest matching band is used.

Affected people
1–999: +5 · 1,000–9,999: +12 · 10,000–99,999: +20 · 100,000–999,999: +28 · 1 million+: +35
Deaths
1–9: +8 · 10–99: +14 · 100–999: +22 · 1,000+: +30
Displaced people
1–9,999: +6 · 10,000–99,999: +12 · 100,000+: +18
Casualties
100 or more: +8
Story wording
+10 for terms such as catastrophe, famine, war, conflict, major earthquake, mass casualty or critical. Otherwise, +5 for active, ongoing, emergency, outbreak, cyclone or hurricane.

Score bands: Watch 0–24 · Moderate 25–49 · High 50–74 · Critical 75–100. Scores are capped at 100. Missing or unparseable figures add no points.

This is a rule-based WorldsAid triage indicator, not an official or independently validated classification. It does not account for recency or local context, and it can understate events with incomplete reporting. Check the linked sources.

Last verified4 Oct 2026
Date
Status
GANDAK EMBANKMENT DAMAGE REPORTED · BREACH COUNTS DIFFER BY SOURCE · NO VERIFIED IMPACT TOTAL
Aid Zone
ASIA
Countries
India
Agency
Bihar Water Resources Department / Bihar Flood Early Warning and Monitoring System
False-colour NASA satellite image of the swollen Gandak River and flooded land in Nepal and northern India on 29 September 2026.
False-colour MODIS view of flooding along the Gandak River on 29 September 2026; floodwater appears blue and vegetation bright green. Photo: NASA Earth Observatory / Lauren Dauphin

In brief

  • What happenedHeavy rain in Nepal’s Gandak catchment caused renewed flood pressure along the river basin on 28–29 September 2026.
  • Reported impactBagaha gauge peak: 91.25 metres · DD India citing a Bihar WRD release · 28 September · Bagaha observed level: 90.80 metres at 06:00 on 29 September · HFL 90.30 metres · reported falling · Embankment damage sites: Two left-bank Champaran sites in the Bihar WRD release; separate WRD-attributed report cites three critical breach sites across Bihar and Kushinagar
  • What help is neededDD India, citing an official Bihar Water Resources Department release, reported two damage sites on the left-bank Champaran embankment and a Bagaha gauge peak of 91.25 metres.

What changed

Updated verified snapshot

This record was first dated 2026-09-28 and last verified 2026-10-04.

Situation

Heavy rain in Nepal’s Gandak catchment caused renewed flood pressure along the river basin on 28–29 September 2026. DD India, citing an official Bihar Water Resources Department release, reported two damage sites on the left-bank Champaran embankment and a Bagaha gauge peak of 91.25 metres. A separate 06:00 Bihar Flood Early Warning and Monitoring System observation on 29 September put Bagaha at 90.80 metres against a 90.30-metre high flood level and described the level as falling. The Indian Express separately relayed a WRD statement citing three critical breaches across Bihar and Kushinagar, Uttar Pradesh, and 169 repaired seepage or piping points. These accounts differ in reported damage-site number and scope; they are retained separately. No casualty, displacement or affected-population denominator was verified.

WorldsAid verification

A WorldsAid editor reviewed this record against 4 attributed sources, cleaned feed formatting and checked the crisis, place and reporting date. 6 human-impact figures were separated from the narrative and dated where the source allowed. Earlier observations remain in the evidence history instead of being silently overwritten.

Verified figures

Bagaha gauge peak
91.25 metres · DD India citing a Bihar WRD release · 28 September retained at 2026-10-04
Bagaha observed level
90.80 metres at 06:00 on 29 September · HFL 90.30 metres · reported falling retained at 2026-10-04
Embankment damage sites
Two left-bank Champaran sites in the Bihar WRD release; separate WRD-attributed report cites three critical breach sites across Bihar and Kushinagar retained at 2026-10-04
Repairs
169 seepage/piping points reportedly repaired · Indian Express citing WRD retained at 2026-10-04
Casualties, displacement, affected population
No verified denominator reported in the cited sources; none inferred retained at 2026-10-04
Scope safeguard
Damage-site counts are source-distinct and not reconciled. retained at 2026-10-04

What we knew when

  1. WorldsAid record entered the retained historical dataset.
  2. Bihar WRD release via DD India: Bagaha reached 91.25 m; two Champaran left-bank damage sites reported. preserved as a dated, source-linked observation. Source
  3. BEAMS/WRD observation: Bagaha 90.80 m versus HFL 90.30 m; level falling. preserved as a dated, source-linked observation. Source
  4. Indian Express citing Bihar WRD: three critical breaches across Bihar and Kushinagar, Uttar Pradesh; 169 seepage/piping points repaired. preserved as a dated, source-linked observation. Source
  5. NASA Earth Observatory MODIS image dated 29 September 2026 added as the story image. preserved as a dated, source-linked observation. Source

Earlier figures are never replaced by later values; additional observations are retained as new ledger entries.

Provenance

This page renders the last verified WorldsAid cache directly in HTML. It does not treat generated summaries as primary evidence.

Cached dataset: worldsai_drup771.sql.gz

Record integrity:
VerifiedSHA-256 0a5b88e304610967eab901b721c310179bd31f5a9a8a69dfda17219bbe411871

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