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Table Of Contents
Chapter 5 Working with Hydrology Commands
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TOPWID: Width at the calculated water surface elevation
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KRATIO: Ratio of the upstream to downstream conveyance
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IHLEQ: Friction loss equation index
TIP
You can see the descriptions from within the HEC-2 Cross Section dialog
box by placing your cursor in a column and clicking the Description
button. Use the >> and << buttons to see all of the columns.
2 Use the following guidelines to view or plot data:
If you want to} Then}
plot the curve on a graph click Plot.
open a cross section message window,
displaying information and warnings
about a specific row in the HEC-2 Cross
Section dialog box
place your cursor in the row and click
Message.
view the HEC-2 data in your currently
configured ASCII text editor in standard
HEC-2 format
click View Files.
TIP
Click Select to return to the HEC2 ANS Selections dialog box and select
another HEC-2 Profile file to view.
3 Click Close to exit the dialog box.
Choosing a Summary Printout Table
To choose a summary printout table
1 In the HECS ANS Selections dialog box, select a Summary Printout Table file
name, and then click Open to display the HEC-2 Cross Section dialog box.
HEC-2 data is displayed in the following columns (not all columns are shown at
all times):
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SECNO: Identifying cross section number
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EGLWC: Energy grade elevation computed assuming low flow
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ELLC: Elevation of the bridge low chord
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EGPRS: Energy grade elevation computed assuming pressure flow
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ELTRD: Elevation of the top of roadway
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QPR: Total pressure of low flow at the bridge
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QWEIR: Total weir flow at the bridge
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CLASS: Identification number for types of bridge/culvert flow
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H3: Drop in water surface elevation from upstream to downstream
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DEPTH: Depth of flow
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CWSEL: Computed water surface elevation
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VCH: Mean velocity in channel
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EG: Energy gradient elevation for a cross section (CWSEL + HV)
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XLCH: Distance in the cross section between the previous cross section and
the current cross section
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ELMIN: Minimum elevation in the cross section