Flood Hazard Mapping

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RASPLOT Bulletin

Issue No. 6

The purpose of the RASPLOT mailing list is to provide up-to-date RASPLOT information and training.

RASPLOT Example with a HEC-2 Model

This example shows how to create a FEMA flood profile from a HEC-2 model. Please download the HEC-2 file (hec2.dat) onto your hard drive and follow along with this example (This file is in WinZip format).

RASPLOT Example with a HEC-2 Model - Running RASPLOT

  1. Click on the RASPLOT icon
    Scroll across and take notice of the yellow cells. These fields can be edited, if appropriate.


  2. Click on File-Open
    Scroll across and take notice of the yellow cells. These fields can be edited, if appropriate.


  3. Open HEC2.dat from where you downloaded it onto your hard drive (make sure HEC-2 is selected as the model type)


  4. Notice that RASPLOT runs the HEC-2 file automatically. Close the DOS screen when it says "Normal Program Termination" (depending on your settings, this screen may close automatically).


  5. Click on the Extract button and the Profile Table Database will appear


RASPLOT Example with a HEC-2 Model - Viewing and Editing the Profile Table Database

  1. Scroll across and take notice of the yellow cells. These fields can be edited, if appropriate


  2. Click on the Data button and enter the following lettered cross sections at the appropriate river station:
    River Station Label Letter
    5135
    A
    7720
    B
    9940
    C
    12040
    D
    12790
    E


  3. Enter the following road name at River Station 9890 under Label Text: Mt. Weather Road


  4. The first surveyed cross section, River Station 4130, is actually 500 feet downstream of the corporate limits. However, RASPLOT assumes that the first cross section is at a cumulative distance of zero. We can correct this by clicking on Edit-Recompute Cumulative Distance.


  5. Enter -500 feet as the starting cumulative distance (the value is negative because the station is downstream of the corporate limits).


  6. Click on OK and notice that the cumulative distance column of the Profile Table Database decreases by 500 feet at each cross section.


  7. Click on the Plot button.

RASPLOT Example with a HEC-2 Model - Viewing and Editing the Profile

  1. Notice the default layout RASPLOT chooses for these data. Depending on the particular file, this default may or may not be appropriate for our layout.


  2. To label the corporate limits, click on Edit-Edit Landmark Table and enter the following information:


  3. Downstream Corporate Limits
    • Cumulative Distance: 0
    • Elevation: 490
    • Text: CORPORATE LIMITS
    • Orientation: Vertical
    • Adjusted: Center
    • Underline: Yes

    Upstream Corporate Limits
    • Cumulative Distance: 8810
    • Elevation: 490
    • Text: CORPORATE LIMITS
    • Orientation: Vertical
    • Adjusted: Center
    • Underline: Yes


  4. Click on OK and take notice of the gray line on the left side of the panel; this indicates the corporate limits label.


  5. Click on the Panel button.


  6. Enter the following data under the General tab:
    • Community Name: Anytown
    • County Name: (Your Co.)
    • State: VA
    • Stream Name: Workshop Brook
    • Stream Distance: Above Corporate Limits
    • Start Station: 4130
    • End Station: 13390
    • Horizontal Scale: 1000
    • Vertical Scale: 5
    • Selected Unit: 1 inch=Feet
    • Start Panel No.: 01


  7. Enter the following data under the Detail tab:
    • Start Station: 0 (0 is the corporate limit)
    • End Station: 12500
    • Origin X: 0 (0 is the corporate limit)
    • Origin Y: 455
    • The other data fields cannot be edited by the user



RASPLOT Example with a HEC-2 Model - Saving the Profile Table Database

  1. Click on the Save button.
  2. Save as HEC2.mdb.

RASPLOT Example with a HEC-2 Model - Creating and Viewing the DXF File

  1. Click on the DXF button to create a DXF file named HEC2.dxf.


  2. Click on File-DXF Editor.


  3. This is the profile created for this HEC-2 file.
    Notice the Corporate Limits label is not positioned correctly (it is outside the grid area).


  4. Click on the Zoom Window button on the top toolbar and zoom in on the label.


  5. Click on the Move button on the left toolbar and move the label to the right about one block.


  6. Click on the Save button.


  7. This file can be opened in AutoCAD® as a DXF file or DWG file (Save the file as a DWG file).


Last Modified: Tuesday, 26-Jun-2007 11:57:20 EDT


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