Quick Answer
Aim for an elevation of at least 100 to 200 feet above the surrounding flood-prone area to ensure a safe escape route during a flood. This height provides sufficient clearance from floodwaters and reduces the risk of being swept away by swift water. In some cases, higher ground such as hills or ridges may be necessary.
Choosing a Safe Elevation
When selecting a location for high ground, look for areas with a minimum elevation of 100 to 200 feet above the surrounding flood-prone area. This height provides sufficient clearance from floodwaters and reduces the risk of being swept away by swift water. Consider the terrain and the flow of water in the area, as a slight incline or a natural watercourse can increase the risk of flash flooding.
Identifying High Ground Features
Some features of high ground that are conducive to safe escape routes include hills, ridges, and elevated plateaus. These areas often have a natural barrier that prevents floodwaters from reaching them, and they can provide a secure location to wait out the flood. Look for features with a consistent elevation and a flat or gently sloping surface, as these can provide a safe place to take shelter.
Vehicle Escape and High Ground
If you’re escaping in a vehicle, aim to reach an elevation of at least 100 to 200 feet above the surrounding flood-prone area as quickly and safely as possible. Avoid driving through floodwaters, as they can be deceptively deep and sweep a vehicle away. Instead, look for a safe route to higher ground, such as a nearby hill or ridge, and drive towards it with caution.
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