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  • 1.  Old HEC-1 Model

    Posted 05-08-2015 04:09 PM

    I have a project that I'm trying to reproduce a very old HEC-1 model (Version July 1978 Last Modification 26 Feb 79) to run on a newer HEC-1 model (Version 4.1 Jun 1998). I have coded the data and it runs and reproduces the inflow hydrograph but doesn't route the hydrograph through the dam.  I have tried a number of changes and nothing worked, so  I have attached the input (OSH2.dat) and output (OSH2.out)files and was wondering if some one could take a quick look and see if you see the problem and let me know the solution.

    Any help is greatly appreciated.



    -------------------------------------------
    Stanley Johnson P.E., L.S., M.ASCE
    Chief Engr
    Columbus OH
    (614) 864-8405
    -------------------------------------------


  • 2.  RE: Old HEC-1 Model

    Posted 05-11-2015 11:47 AM
    I don't see what you are doing wrong either.

    PADEP Dam Safety recommended downloading the Maryland HEC1 editor & HEC1 program.

    I wonder if you have an invisible code in the ASCII text file.  Maybe type over from scratch?

    -------------------------------------------
    Ann Wingert P.E., M.ASCE
    Engr
    Hanover Engineering Associates, Inc.
    Bartonsville PA
    (570)688-9550
    -------------------------------------------




  • 3.  RE: Old HEC-1 Model

    Posted 05-14-2015 04:05 PM
    Stanley:

    I reviewed the code several time and could not find the problem. I opened the file in Corps of Engineers COED and there was no indication of a problem there either. Hats off to Chung-Cheng Yen for a good catch. My experience has shown, on many occasions that  'o' / '0' has been the culprit in coding errors. This exercise has been a good refresher lesson.

    -------------------------------------------
    Joseph Ruperto P.E., M.ASCE
    Project Engineer
    URS Corporation
    Tampa FL
    (813) 636-2165
    -------------------------------------------


    Original Message


  • 4.  RE: Old HEC-1 Model

    Posted 05-11-2015 04:28 PM

    Stanley,

    First entry in SQ card should be "zero" not "o".

    CC

    Chung-Cheng Yen, PhD, PE |Surface Water Group

    Main: 949.809.5000 | Fax: 949.809.5003 | Direct: 949.809.5102

    chung-cheng.yen@...  | www.tetratech.com

    Tetra Tech | Complex World, Clear Solutions

    17885 Von Karman Avenue, Suite 500, Irvine, CA 92614

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    ------Original Message------

    I have a project that I'm trying to reproduce a very old HEC-1 model (Version July 1978 Last Modification 26 Feb 79) to run on a newer HEC-1 model (Version 4.1 Jun 1998). I have coded the data and it runs and reproduces the inflow hydrograph but doesn't route the hydrograph through the dam.  I have tried a number of changes and nothing worked, so  I have attached the input (OSH2.dat) and output (OSH2.out)files and was wondering if some one could take a quick look and see if you see the problem and let me know the solution.

    Any help is greatly appreciated.



    -------------------------------------------
    Stanley Johnson P.E., L.S., M.ASCE
    Chief Engr
    Columbus OH
    (614) 864-8405
    -------------------------------------------


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