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HGL vs WSE

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SueP

SueP

Civil/Environmental
Sep 30, 2024
1
When reviewing detention studies, I typically see 2, 10, and 100 year WSEs. The one I'm looking at now provides the HGLs instead of the WSEs. Are they interchangeable?
 
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HGL = total fluid head - velocity head = elevation head + pressure head - velocity head.

Assuming a free water surface, then yes, HGL is equivalent to WSE (i.e., elevation head).
 
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