{ "schema": "official-event-record-v1", "source": { "title": "Rasuwa Flood Situation Report #01", "author": "Government of Nepal, National Disaster Risk Reduction and Management Authority (NDRRMA)", "as_of_local": "2026-09-01T09:00:00+05:45", "url": "https://ndrrma.gov.np/mediafiles/rasuwa/Rasuwa_Flood_SitRep_Temp_ENG_01_01092026.pdf", "retrieved_utc": "2026-09-08T06:57:00Z", "note": "Every figure here is quoted from this one report at this one timestamp. Numbers circulating elsewhere for this event disagree with each other by an order of magnitude; this page quotes NDRRMA or nothing." }, "mechanism": { "type": "ice-rock avalanche", "not": "glacial lake outburst flood", "detached_area_km2_estimate": 1.0, "detachment_setting": "north-facing slope near the Lhende river, rock-glacier material", "distance_upstream_of_rasuwagadhi_km": 20, "process": "the detached ice and rock entrained loose proglacial sediment and transformed into a highly mobile sediment- and water-laden debris flow, temporarily damming the river before releasing", "unosat_mapped_detachment_km2": 1.955 }, "timeline_local_npt": [ { "time": "08:40", "event": "Ice-rock avalanche in the upper watershed near the Nepal-China border reaches Lhende Khola", "kind": "onset" }, { "time": "08:50", "event": "Bhote Koshi-Syafrubesi hydrological station stops transmitting; last water level 1.62 m", "kind": "gauge_lost" }, { "time": "09:15", "event": "DHM confirms a major flood wave and issues downstream warnings for the Trishuli corridor", "kind": "warning" }, { "time": "10:28", "event": "Flood wave reaches Galchhi", "kind": "arrival", "place": "Galchhi" }, { "time": "11:50", "event": "Flood wave reaches Malekhu", "kind": "arrival", "place": "Malekhu" }, { "time": "13:00", "event": "Flood wave reaches Mugling", "kind": "arrival", "place": "Mugling" }, { "time": "15:20", "event": "Flood wave reaches Devghat", "kind": "arrival", "place": "Devghat" }, { "time": "16:00", "event": "Peak discharge at Devghat, approximately 5,850 m³/s", "kind": "peak" } ], "hydrology": { "peak_discharge_m3s": 5850, "peak_at": "Devghat", "peak_time_local": "16:00", "total_flood_volume_Mm3": 57.4, "excess_above_base_flow_Mm3": 19.96, "warning_sms_sent": 679295, "warning_carriers": [ "Nepal Telecom", "Ncell" ] }, "impact": { "deceased_bodies_and_parts_recovered": 987, "missing_reported": 3916, "missing_reported_across_districts": 62, "rescued": 11814, "foreign_nationals_rescued": 253, "people_impacted_estimate": 1600000, "motorable_bridges_washed_away": 41, "motorable_bridges_damaged": 4, "districts_severely_affected": [ "Rasuwa", "Nuwakot" ], "districts_moderately_affected": [ "Dhading", "Gorkha", "Chitwan" ] }, "claim_boundary": "This block is a quotation of an official report, not a product of this project's model. Nothing on this site measures casualties, damage or discharge." }