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

AC: Archival Option. The optional AC card allows the user to
document and create a computer readable record of input data and computed
results in a compact form on a magnetic tape. The Archival tape could
be utilized with appropriate software to generate profile or cross section
plots and to create new output tables using any of the sixty-three
variables available for summary printout. Multiple AC cards may be
utilized to provide alphanumeric comments on the magnetic tape to document
data sources, study assumptions or other pertinent information.

C: Comment Cards. These optional cards can be used to provide
alphanumeric commentary in the data input list and in the standard cross
section output.

T1, T2, & T3: Title Cards. These cards are required for each job
(profile). Title information provided by these cards is printed at the
beginning of each job. A portion of the T3 card is reserved for title
information for summary printout tables and cross section and profile
~o~.

6. JOB CONTROL CARDS: Jl - J6, EJ & ER

These cards control the processing of data, specify the level of
printout, select various computational options, and terminate execution
of the program. Jl and J2 cards apply only to a particular profile and
must be input for each profile of a run. Job control cards J3 through
J6 pertain to all profiles in a run and are only input with job cards
for the first profile.

Jl: Required Job Card. This job card is required for each profile
to specify starting conditions, i.e., discharges, flow regilre, water
surface elevation, or energy slope. The Jl card also controls the
printing of the data input list and options related to metric units,
computer generated cross sections and the calculation of Manning's 'n'
from high water marks.

J2: Required Job Card. This job card is required for each profile
except the first of a multi-profile run. The use of the J2 card is
optional for the first profile of a multiple profile run or for a single
profile run. This card controls the reading of data cards, the plotting
of cross sections and profiles, modification of Manning's 'n', the calcula-
tion of critical depth and simulates channel modification by trapezoidal
excavation. The J2 card also controls the trace option, requests flow
distribution data, and requests summary tables.

J3: Optional Job Card. This job card is used on the first profile
to select variables for summary printout. The user may select from a
list of sixty-three variables to define summary output tables. The user
also may choose from seven pre-defined tables to summarize data for
bridges, encroachments, channel improvements, floodways and flood hazard
zones.

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