Weather Dictionary / Glossary of Terms

Dam


   Weather TermDescription / Definition
   Dam In hydrologic terms, any artificial barrier which impounds or diverts water. The dam is generally hydrologically significant if it is:
1. 25 feet or more in height from the natural bed of the stream and has a storage of at least 15 acre-feet.
2. Or has an impounding capacity of 50 acre-feet or more and is at least six feet above the natural bed of the stream.


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Data courtesy of NOAA - National Oceanic and Atmospheric Administration