I was reading an article about Design of elevated flumes (flume is a human-made channel for water). Here is a part of the article,

8.1 Data Requirement


  • Top Bank, TB

  • Water Surface, WS

  • Canal Bed, CB

My question is, what does Elevation of Top Bank mean? I looked up at OALD dictionary and I think bank refers to sense 5 "the side of a river, canal, etc. and the land near it". But still not sure about the meaning of the phrase. Does that mean elevation from top of a side of flume to the ground?

  • 1
    So, flumes are associated with channels or canals, yes. So, bank does mean the sides of a canal or channel. I assume top bank means the distance from the water surface to the top of the bank [of the canal or channel], in which the flume flows. But I am not 100% sure.
    – Lambie
    Jan 15, 2022 at 16:53
  • 1
    Given the other heights you mention I agree with @Lambie it is almost certainly the very top of the bank of the flume.
    – mdewey
    Jan 15, 2022 at 16:59
  • Agreed with Lambie and mdewey above on what it likely means, but if this is technical jargon, then only an expert can definitively answer this question.
    – gotube
    Jan 17, 2022 at 22:26

1 Answer 1


Maybe this will help? Google is your friend.

enter image description here

  • What a great find!
    – Lambie
    Jan 15, 2022 at 17:00

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