What is flood stage?

The National Weather Service, based on the desires of the local community, establishes the "flood stage" gauge height for any given community. The flood stage gauge height is often the stage where damages begin to occur. Many communities desire to use the flood stage gauge height as an early warning alert, prior to the onset of significant damages. Significant damages may not occur until river levels are several feet above flood stage. Additionally, conditions along some rivers may have changed since the gauge and flood stages were established and reaching the flood stage may or may not result in actual damages. Again, stages are site-specific, so feet above flood stage at one location can’t be compared to another.

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1. What is a 100-year flood?
2. What is flood stage?
3. What is river stage?
4. What is a flood advisory?
5. What is a flood watch?
6. What is a flood warning?
7. What is a flash flood warning?