|WORLD METEOROLOGICAL ORGANIZATION||
|Explanation of the criteria for classification and numbering of components|| K65.2.02
|Explanation of the dates on the component's description|
SCOUR AND DEPOSITION IN RIVERS AND RESERVOIRS (HEC-6)
1. Purpose and objectives
This program (HEC-6) computes water surface and sediment bed profiles
for rivers and reservoirs by analysing the interaction between sediment
material in the stream bed and the flowing water sediment mixture.
The total sediment load transported along a stream, and changes in the
stream's bed elevation and water surface profile with respect to time are
calculated at each cross section considering the following: the inflowing
water discharge, inflowing sediment load, gradation of material in the stream's bed, armoring and destruction of the armor lever. Clay, silt, sand
and gravel sizes are transported and cobble sizes can be included for armor calculations.
Card image input. The data needed to perform these computations
include: (1) geometric data consisting of cross sections, reach lengths, and n-values; (2) sediment data consisting of inflowing sediment load,
stream bed gradation, and sediment properties; and (3) hydrologic data consisting of discharge, flow duration and water temperatures.
Several levels of output information are available for each major data group. Data edit and debugging options may be selected by program users.
5. Operational requirements and restrictions
a) Persons with knowledge and experience in open channel flow and
b) One week of training is required.
c) The program is written in FORTRAN. The executable program is
d) Program limitations: It is a one-dimensional steady flow model with
6. Form of presentation
Program is available on diskette or via Internet download. Support
documentation consists of a Users Manual and training documents. Instructional videotapes are also available.
7. Operational experience
8. Originator and technical support
The Hydrologic Engineering Center, HEC, U.S. Army Corps of Engineers.
HEC provides support to Corps offices; numerous engineering firms are available to support others - see www.hec.usace.army.mil
Download from www.hec.usace.army.mil; or from the HOMS National Reference Centre for USA.
10. Conditions on use
Internet download is free. A standard handling fee is charged for the diskettes and documentation.
| Reclassified from J27.2.01 MAR 1987
(First entered:03 FEB 81
Last updated: 6 DEC 99)