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HEC-2 Help

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ritrower

ritrower

Civil/Environmental
Joined
Dec 9, 2003
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3
Location
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I am trying to reproduce some FEMA results for a flood study on one of our projects. The study was completed using HEC-2 orginally. I have a copy of results.

I am trying to reproduce the results using HEC-2 so that I can then use them in HEC-RAS to complete a design.

The problem I am having is entering the X-sectional data. When I try to enter data in the GR card I get an error message that says I must enter a value between 0-101. (I can't remember the actual values but it is something like that)

Does anyone have a suggestion or know of another way to reproduce these results?

Gregg

P.S. I am using the FREIND program to enter in this data.
 
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It's been awhile, but from my past experience it was fairly common to improperly enter data using HEC2. (It sounds like your creating a "punch card" and running it through the program.)

If you haven't used HEC2 much you might want to double-check your data entry; make sure your putting in the proper number of spaces between data.

It's been too long for me to be much more help.
 
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If it is a message is from EDIT-2 or another program checking the data of your HEC-2 stack, most likely you are entering too many GR points within the same card. GR data is limited to 100 points (safe side use 95-98) per cross-section. However, this can be side-stepped by using X4 cards to supplement the GR data.

If it appears while you are entering the data, then it is from the interface program and not HEC-2.

You can always use COED from USACOE or a simple text editor to enter the data.
 
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Yes Coed is a great prog. I have never been able to get it to run on Win 2k though. Hopefully you have an old DOS machine hanging around. Or as I have done, use hec ras and export the gr data
 
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Other tricks is to use a spreadsheet like Excel to input your data, then concatenate the data with commas. This can
be copied-pasted into a text file. Then just use free format in the HEC-2 model.
 
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I typed out a few lines of the results that I have. Is this what i would have to do to use the free format option?

J2 NPROF,IOKIT,PREVS,XSECV,XSECH,FN,ALLDC,IBW,CHMIM,ITRACE
1.000,0.0,-1.000,0.0,0.0,0.0,0.0,0.0,0.0,0.0
J3 VARIABLE CODES FOR SUMMARY PRINTOUT
110.000,150.000,200.000,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0
NC 0.100,0.100,0.040,0.100,0.300,0.0,0.0

Thanks
gregg
 
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ritrower,
first look at an example of a working HEC-2 file.
The output for the job cards include descriptions of the variables.
The NC card looks mostly correct--don't put a space after the two letters. Also if the column is Zero, then you don't have to enter a zero -- a ,, equals a zero.
eg. your three lines should look like:
J21,0,-1
J3110,150,200
NC.1,.1,.04,.1,.3

 
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Thanks for the help Bayou. I didn't have an example to work off of.

Gregg
 
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