Purpose

Part 2 of workshop 1: Participants will import an HEC-FDA Version 1.4.3 model into the Version 2 software. 

Last Updated

Last Modified: 2026-07-28 07:10:37.179

Downloadable Materials

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What You've Already Completed

Steps previously completed:

  1. WS1 Introduction to HEC-FDA
  2. WS1 - Part1 Create New Study From Scratch

To Continue with Part 2 – Start Here

Follow the steps below to create a new HEC-FDA Version 2 study from a Version 1.4.3 study. For more information review the tutorial: Version 1.4.3 to Version 2.0 Study Conversion. The HEC-FDA Version 1.4.3 study text files have been provided to you in the Workshop1-Part2_Data.7z data you downloaded from, here: WS1 Introduction to HEC-FDA.

Import Study From Tab-Delimited Text File

  1. Open a fresh instance of HEC-FDA.

    Do Not keep the Muncie Study you created open. Close the HEC-FDA software before you continue. This is a new study with new study data, for Beargrass Creek.

  2. From the File menu, click Import Study.  The Import Study From Tab-Delimited Text File dialog opens as a tab.
  3. From the Study Name box enter a name for your study (e.g., WS1part2_Beargrass).
  4. From the Tab Delimited Import File, click the click the ellipse button to open the Select File browser window.
  5. Navigate to the location of the HEC-FDA Version 1.4.3 exported text file (e.g., C:\Workshops\FDA\Workshop1-Part2_Data\ApplicationGuideStartingData\HEC-FDA_Study), select the file "FDA_ExportASCII.txt" and click Open.
  6. From the Study Path box, click the ellipse button to open the Select Folder browser window. Navigate to the desired location for saving the new study (e.g., C:\Workshops\FDA\Workshops) and click Select Folder.
  7. Enter a description in the Description box (e.g., This is the second part of the first workshop).
  8. Click Import and view the Import Log.
Test Your Knowledge - Question 1

BEFORE CLOSING the Import Log:  At the very bottom of the import log what is the explanation for why "stage damage curves cannot be imported at this time"?

Import Impact Area Set

Steps

  1. From the Study Tree, under Impact Areas, right-click on Impact Area Set, and click Import Impact Area Set. The Import Impact Area Set dialog opens as a tab.
  2. Enter a name in the Impact Area Name box (e.g., Beargrass Impact Areas). Enter a description in the Description box (e.g., Workshop 1, Part 2 impact areas for example Version 1.4.3 dataset).
  3. From the Shapefile Path box, click the ellipse button to open the Select File browser window.
  4. Navigate to the location of the impact areas file (e.g., C:\Workshops\FDA\Workshop1-Part2_Data\ApplicationGuideStartingData\ImpactAreas), select the file "BeargrassCreek.shp" and click Open.
  5. From the Unique Name list select, Name. 
  6. Click OK to import the impact areas.

Import Aggregated Stage-Damage Functions

Steps

  1. Right-click on Aggregated Stage-Damage Functions under Economics within the Study Tree. Click on Import Stage-Damage Functions from Tab-Delimited Text File. The import dialog opens as a tab.
  2. From the Base Name box, give the functions a base name (e.g., BearStgDmg) and enter a description in the Description box (e.g., These are aggregated stage-damage functions for Beargrass).
  3. From the Tab Delimited File box click ellipse button to open the Select File browser window.
  4. Navigate to the location of the same HEC-FDA Version 1.4.3 exported text file (e.g., C:\Workshops\FDA\Workshop1-Part2_Data\ApplicationGuideStartingData\HEC-FDA_Study), select the file "FDA_ExportASCII.txt" and click Open.
  5. Click Import and view the Import Log.
  6. A set of stage-damage functions will be created in the study tree for each combination of plan and analysis year. For example, all without-project base year stage-damage functions (one for each impact area) will exist as a set of stage-damage functions. The name of the set of functions will be the base name plus the plan and year. 

Review the Study Data for Part 2

There are four plans in the workshop data: Without which represents the without-project condition, Plan 1 which consists of a detention basin and channel modification, Plan 2 which consists of a floodwall only, and Plan 3 which consists of all three. The detention basin and channel modifications are reflected through their condition-specific discharge-frequency and stage-discharge functions, which are the Plan 1 functions. The levee for Plans 2 and 3 in reach SF-9 is the floodwall found under Lateral Structures. Plan 2 uses the without-project discharge-frequency and stage-discharge functions. 

Test Your Knowledge - Question 2

Find the OSNB Occupancy Type. There are errors in the text boxes. What are the errors?

Hint

From the Study Tree, right click on the imported occupancy types dataset, and select Edit. From the editor, select the OSNB occupancy type and hover over a highlighted box (e.g., yellow highlight).


Conclusion

Each of the workshops have solution projects. Download the solution projects below to compare to your projects.

To access the files, unzip and then:

  1. Open the HEC-FDA Version 2 software.
  2. From the File menu, click Open. The Open Study dialog opens as a tab.
  3. Click the ellipse button in the Study Path box to open the Select File browser window.
  4. Navigate to the Workshop 1, Part 2 solution project, select the *.sqlite HEC-FDA file and click Open.
  5. From the Open Study tab, click OK.

Review the answers below to the workshop questions. Close FDA when finished with Part 2.

Return to top of page.

Best Answers to Test Your FDA Knowledge Questions
Test Your Knowledge - Question 1
At the very bottom of the import log what is the explanation for why "stage damage curves cannot be imported at this time"?

Answer: Because "Impact areas are required before stage damages can be imported."

Test Your Knowledge - Question 2

Find the OSNB Occupancy Type. There are errors in the text boxes that are highlighted. What are the errors?

Answer: The depth-percent damage function is not monotonically increasing from the first to second coordinates. You can verify by hovering your mouse over the box and reading the tool tip.  
Screenshot of the Tooltip HEC-FDA displays.

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