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This webinar was co-sponsored by ASCE's Environmental & Water Resources Institute (EWRI) and ASCE Continuing Education

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Instructor:  Lonnie Anderson, P.E., CFM

Course Length: 1 Hour

Purpose and Background

HEC-RAS V5.0 has the ability to model runoff in two dimensions. This version of HEC-RAS will allow the modeler to apply precipitation to the surface as well as apply hydrographs at selected locations along the boundary and internally to 2D domains. This ability allows the modeler to estimate and quickly view runoff patterns, flooding depths, velocities and flood extents prior to developing detailed hydrology and hydraulic models.

Visualization of the hydraulic results is extremely useful for determining flow concentration points and areas where overflow is occurring. Visual depictions of the flood wave assist with creation of more detailed models and presentation to clients and for reports and submittals.

This webinar focuses on a more in-depth look at the HEC-RAS 5.0.7 2D capabilities. The webinar provides a discussion on the use of RAS Mapper in the development of the 2D model, preparing and importing background information such as Manning's n-value coverages. Emphasis will be placed on input and developing the 2D surface for use in RAS 5.0.7. Participants who wish to attend this webinar must be well-versed in using unsteady HEC-RAS and GIS software.

Primary Discussion Topics

• Terrain importing and editing
• Defining land roughness values
• Setting and editing 2D grid size
• Defining boundary conditions
• Setting computation interval times
• Review mapping output
• Mapping output options

Learning Outcomes

Upon completion of this course, you will be able to:

• Add terrain, shapefiles and web imagery within HEC-RAS directly
• Add landuse roughness factors for use in 2D modeling
• Add proposed conditions terrain
• Generate depth grids and flood elevations for use in various CADD software

Webinar Benefits

• Find out the latest advances in HEC-RAS 2D
• Learn about current state of the practice
• Develop flood mapping and hydrology efficiently and in greater detail

Assessment of Learning Outcomes

Students' achievement of the learning outcomes will be assessed via a short post-assessment (true-false, multiple choice and fill in the blank questions).

Intended Audience

• Civil engineers seeking to gain knowledge on the new 2D feature available in HEC-RAS 5.0.7

Webinar Outline

• RAS Mapper basics and data layers
• Terrain processing
• 2D model development
• Applying internal and external storage area connectors
• Applying hydrology to the 2D surface via direct precipitation on surface and external boundary conditions

How to Earn your CEUs/PDHs and Receive Your Certificate of Completion

To receive your certificate of completion, you will need to complete a short on-line post-test and receive a passing score of 70% or higher within 1 year of purchasing the course.

How do I convert CEUs to PDHs?

1.0 CEU = 10 PDHs [Example: 0.1 CEU = 1 PDH]