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    NH SADES

    New Hampshire Statewide Asset Data Exchange System
    1. Stream Crossing Support
    2. Assessment Questions
    3. Outlet type for natural bottom structure?
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    bfalco
    Jun 6, 2018

    Outlet type for natural bottom structure?


    For structures with natural or embedded bottoms, should outlet grade be considered "at grade"? We had a couple of structures that seemed to have a "cascade" at the outlet, however, it appears to have been a natural condition of the stream bed.




    Tried to capture in the attached photo.

    1 comment
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    cheryl.bondi
    Jun 6, 2018

    Thanks for providing a photo with your question- very helpful. That would be considered "at grade". Those large boulders/cobbles are part of a riffle at the outlet. In these higher gradient, boulder- dominated mountain streams your team is working in, I think your team will come across this quite often.

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