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H&H for Dam Safety Studies (2024)
March 6-8, 2024
Objectives
The objective of the course is for participants to perform hydrologic and hydraulic modeling in support of Dam Safety studies. Course participants will be required to run HEC-HMS, HEC-SSP, and HEC-RAS.
Topics presented will include: Development of Probable Maximum Precipitation (PMP); Hydrologic Modeling for PMP/PMF Events; Hydrologic Loading; Flow Frequency; HEC-RAS Model Geometry Development, Developing Dam Breach Parameters; Dam Breaching Analysis using HEC-RAS; Unsteady Flow Modeling with HEC-RAS; and Using RAS-Mapper for Inundation Mapping. Each participant will have the opportunity to prepare model input and analyze model output during course workshops.
Prerequisites
Students who come to this class should have knowledge on how to use HEC-HMS and HEC-RAS. This knowledge can be in the form of a basic training class or on the job experience. The preparation of basic input data and analysis of the output from these software packages will not be covered. Experience in unsteady flow modeling is a plus but is not required.
Instructors
Cam Ackerman
Mark Jensen
Alex Kennedy
Alex Sanchez
Eric Tichansky
Terms of Use
Any use or reproduction of this material must be attributed to the US Army Corps of Engineers Hydrologic Engineering Center.Training for Hydraulics Portion
Day 3: Wednesday
| Time | Topic | Objective | Instructors | Materials | |
|---|---|---|---|---|---|
| 0800-0900 | L3.1 | Introduction to Unsteady Flow Modeling | Covers ways to develop unsteady flow models. | Jensen | |
| 0900-1000 | L3.2 | Developing Geometric Data with RAS Mapper | This lecture will describe how to use HEC-RAS Mapper to prepare input data to an HEC-RAS model in support of a dam breach analysis. | Ackerman | |
| 1000-1015 | Break | ||||
| 1015-1200 | W3.3 | Geometry Development with RAS Mapper | Students will learn how to use HEC-RAS Mapper to prepare the geometric input data for HEC-RAS. | Ackerman/Kennedy | |
| 1200-1300 | Lunch | ||||
| 1300-1330 | W3.3 | Review | Ackerman | ||
1330-1430 | L3.4 | Unsteady Flow Modeling for Dam Safety Studies | This lecture will describe how to enter unsteady flow data and boundary conditions, perform the computations, and view results of an unsteady flow analysis. | Jensen | |
1430-1445 | Break | ||||
| 1445-1545 | L3.5 | RAS Mapper Visualization | Using RAS Mapper for visualization of RAS Results | Tichansky | |
| 1545-1700 | W3.6 | Unsteady Flow Modeling for Dam Safety Studies | Students will learn how to model a dam and the downstream area using unsteady flow routing in HEC-RAS. | Sanchez |
Day 4: Thursday
| Time | Topic | Objective | Instructors | Materials | |
|---|---|---|---|---|---|
| 0800-0830 | Review | Sanchez | 3.6 WS - Unsteady Flow Modeling for Dam Safety Studies.zip | ||
| 0830-0930 | L4.1 | Dam Breach Parameters | Tools and methods in HEC-RAS for development of dam breach parameters and breach modeling, typical problem areas in development of breach parameters. | Jensen | |
| 0930-1015 | L4.2 | Using HEC-RAS to Perform a Dam Breach Analysis | This lecture will cover how to enter dam breach parameters into HEC-RAS, performing the computations, and viewing pertinent results. | Ackerman | |
| 1015-1030 | Break | ||||
| 1030-1200 | W4.3 | Performing a Dam Breach Analysis with HEC-RAS | This workshop will have students entering dam breach parameters, running the model, and viewing results. A range of breach parameters will be tested during the workshop. | Sanchez/Ackerman | |
| 1200-1300 | Lunch | ||||
| 1300-1330 | Review | Sanchez | |||
| 1330-1415 | L4.4 | Computation Options | Initial Conditions and Computations Options | Tichansky | |
| 1415-1430 | Break | ||||
| 1430-1530 | L4.5 | Detecting and Fixing Common Model Stability Problems for Dam Breach Analysis | This lecture will discuss methods for identifying and fixing model stability problems. | Jensen | |
| 1530-1700 | W4.6 | Diagnosing and Fixing Common Stability Problems | Students will be given several data sets that have at least one model stability problem. The goal is to identify the problem and to fix it. | Jensen/Sanchez |
Day 5: Friday
| Time | Topic | Objective | Instructors | Materials | |
|---|---|---|---|---|---|
| 0800-0900 | L5.1 | Refining an HEC-RAS Model | This lecture (and demo) will discuss ways to improve HEC-RAS results through model refinement. | Ackerman | |
| 0900-1000 | W5.2 | Refining an HEC-RAS Model | Students will gain hands on experience in using HEC-RAS results to improve a breach model. | Ackerman/Tichansky | |
| 1000-1015 | W5.2 | Review | 5.2 WS - HEC-RAS Model Refinement.zip | ||
| 1015-1030 | Break | ||||
| 1130-1230 | Course Wrap-up | Post-test, course critique and closing remarks. | Class Coordinators |