FLOOD08565

• County: Statewide
• Basin: Statewide
• Title: HEC-2 Water Surface Profiles
• Date: 8/1/1979
• Prepared For: US
• Prepared By: US Army Corps of Engineers
• Floodplain - Doc Type: Educational/Technical/Reference Information

provides a capability to record alphanumeric comments to document
such pertinent information as study location, data sources, and study
assumptions.

An Archival tape can be used, with appropriate software, as a basis
for further analysis. For example, additional profile plots can be
generated, new output tables can be produced using any of the variables
available for summary printout (J3 card), and cross section data can be
verified. This may be particularly valuable when analysis is required
to determine encroachment or floodways within the study area.

The Archival tape is structured as follows:

Section a. Input data cards

Section b. Header block showing program version

Section c. Number of output variables and cross sections

Section d. Alphanumeric names of output variables

Section e. Output variables for each cross section

Sections of the output defined above are separated by numeric
delineators. Section a is terminated by a 130 character line of 1 'so
Sections b, c, and d are terminated, respectively by lines of 2's, 3's,
and 4's. This is followed by the values of all sixty-three variables
for each cross section. Each profile is terminated by a line of 5's.
The tape is terminated by a line of 6's. This is illustrated by the
example on pages 35 - 36.

At the beginning of the normal output for Archival executions the
following line will appear:

THIS IS AN ARCHIVAl RUN ALL DATA AND RESULTS ARE SAvED ON UNIT 90

This indicates the unit number (in this example unit 96) on which the
file is written. It is the user's responsibility to provide the required
job control statements to insure that the file written on unit 96 will
appear on magnetic tape or otherwise be saved by the system after execu-
tion.

The information written to the tape is formatted 130 character
lines. This will allow the tape to be listed directly on a line printer.
It should be noted that the tape will contain characters in column one
that are not intended as line printer carriage control. Thus for direct
tape listing, the lines should be shifted one column.

On an Archival execution, cross section plots should not be
requested. Also the maximum number of summary tables is reduced by two
for an Archival run. The example on the following page shows the type
of information" that may be appropriate.

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