If the home is in a designated "Flood Zone", even though it may not have flooded recently, there will still be the potential that it might flood in the future.
The flood rating assigned will indicate the potential severity of a future flood.
Too high - it flooded Not high enough - it did not flood.
Yes, the River Thames in London has flooded in the past due to heavy rainfall and high tides. The city has built flood barriers and employs other measures to manage and mitigate flood risks.
Your car's engine most likely got flooded when the water covered your car.
The Thames Barrier is a moveable flood barrier designed to prevent London being flooded by very high tides or storm surges.
The first rule of flood safety is to evacuate to higher ground if you are in a flood-prone area. Never attempt to drive or walk through flooded areas, as it can be extremely dangerous and potentially life-threatening.
The tsunami will flood the low lying areas. Going to higher ground might take you out of the areas that will be flooded.
Genesis 7:20: "Fifteen cubits upward did the waters prevail; and the mountains were covered. " This is mystifyingly ambiguous. Fifteen cubits could be seen by a native of Babylon as high enough to flood the whole earth, but it is certainly not enough to begin to cover Mt Ararat, which is over five kilometres high.
The Somerset Levels flooded due to a combination of heavy rainfall, high tides, and insufficient drainage systems in the area. The flat topography of the region also contributed to the prolonged flooding.
A plain is basically a large, flat area and flood plains are the large flat areas to either sides of rivers. These areas, when it rains so much that the river bursts its banks, are covered in water: flooded.
A coastal flood advisory is issued by the National Weather Service to warn of minor coastal flooding or beach erosion due to a combination of onshore winds, astronomical tides, and sometimes high surf. It is a lower-level alert compared to more serious warnings like coastal flood watches or warnings.
I gather you mean 'House Flood Plan' rather than plain. This can mean a few things but both relate to the safety of the occupants in a house in the event of a flood occurring. In some jurisdictions a flood plan is needed to be given to the building authority to show the new home has flood mitigation drains or swales, is built high enough not to be flooded, or has a flood evacuation plan. It can also mean a council authority plan that shows where flooding has occurred in a district and where you could safely build a home.
A flood can go as high as the land and water allow. There is no limit to the rise of flood waters because a flood is not a controlled event.