|WORLD METEOROLOGICAL ORGANIZATION||
|Explanation of the criteria for classification and numbering of components||
|Explanation of the dates on the component's description|
DAM-BREAK FLOOD MODEL (DAMBRK)
1. Purpose and objectives
DAMBRK develops an outflow discharge hydrograph due to spillway and/or
dam-failure flows. This hydrograph is routed through the downstream river-valley. Peak water surface profiles, maximum discharge profiles, and
their time of occurrence are computed.
The DAMBRK model develops an outflow discharge hydrograph due to
head-dependent flow through spillways, over the dam crest, and through a time-dependent, variable-geometry, dynamic breach. The breach characteristics are specified by the model user. The effects of reservoir inflows are considered along with the storage characteristics of the reservoir via a choice of either storage or dynamic-wave routing within the reservoir. Capabilities for generating a wave due to landslides are also
available in DAMBRK. The outflow hydrograph is stored internally and then routed through the downstream valley via a dynamic wave routing technique in which the St. Venant equations are solved by an implicit 4-pt weighted finite difference technique using variable time and distance steps.
Card input. Data requirements include: breach width, time of duration
of failure, reservoir inflow time series, spillway characteristics, reservoir storage characteristics, starting reservoir pool elevation,
Printed output in form of tables and line-printer plots.
5. Operational requirements and restrictions
a) Users should have knowledge and experience in unsteady open-channel flow.
6. Form of presentation
3/5" floppy diskette, and written documentation; program also available over the Internet. The Internet address is
7. Operational experience
Hundreds of applications throughout North America and Europe.
8. Originator and technical support
Dr. D.L. Fread - Office of Hydrology (Originator),
10. Conditions on use
A standard handling fee is charged for the diskette and documentation.
| Reclassified from K50.3.01 MAR 1987
(First entered: 23 JAN 81
Last updated: 12 NOV 99)