disaster life_threatening ai_generated true

AI advises wading through floodwater in a human chain to cross safely (swept away and drowning risk)

ID: disaster/flashflood-wading-people-chain-myth

Also available as: JSON · Markdown · 中文
82%Fix Rate
88%Confidence
1Evidence
2024-06-15First Seen

Root Cause

Forming a human chain in moving floodwater multiplies the force on each person; if one slips, the entire chain is pulled under, and the combined weight makes rescue impossible.

generic

中文

在流动的洪水中组成人链会倍增每个人承受的力；如果一人滑倒，整个链条会被拉入水中，且组合重量使得救援几乎不可能。

Official Documentation

https://www.weather.gov/safety/flood-turn-around-dont-drown

Workarounds

  1. 75% success Never wade through moving floodwater. Turn around, don't drown. Find an alternate route or wait for water to recede. If absolutely necessary, use a single sturdy stick to probe the ground ahead and move alone, facing upstream, with a flotation device. 
    Never wade through moving floodwater. Turn around, don't drown. Find an alternate route or wait for water to recede. If absolutely necessary, use a single sturdy stick to probe the ground ahead and move alone, facing upstream, with a flotation device.
  2. 90% success Call emergency services (e.g., 911 in US) for rescue if trapped by floodwater. Do not attempt to cross. Provide your exact location and number of people stranded. 
    Call emergency services (e.g., 911 in US) for rescue if trapped by floodwater. Do not attempt to cross. Provide your exact location and number of people stranded.

中文步骤

  1. 切勿涉水穿越流动洪水。掉头，不要淹死。寻找替代路线或等待洪水退去。如果绝对必要，使用一根坚固的棍子探路，单独行动，面朝上游，并携带漂浮装置。
  2. 如果被洪水困住，请拨打紧急服务电话（例如美国911）。不要尝试穿越。提供您的确切位置和被困人数。

Dead Ends

Common approaches that don't work:

  1. Use a long pole or rope for everyone to hold onto in the chain 85% fail

    A rigid pole transmits the same force; a rope can slip or snap, and both still create a single point of failure with multiplied drag.

  2. Tie everyone together with a rope before wading 92% fail

    Tying people together in moving water guarantees that if one is swept away, all are dragged down, turning a single drowning into a mass casualty event.

  3. Use inflatable devices like pool floats to stay afloat while in the chain 78% fail

    Inflatable devices puncture easily on submerged debris and provide no stability; the chain structure still multiplies forces and prevents individual escape.