Agenda
Webinar instructions will be emailed 24-48 business hours before the date of the webinar.
Please log into the webinar 15 – 30 minutes before start time.
Tuesday, September 16, 2025
9:00 am – 4:30 pm CDT
Agenda:
Presented by Dr. Gregory H. Nail, PhD, PE
Overview and Background
- Overview and HEC-RAS
- Steady one-dimensional conservation of energy for open channel flows
- Accounting for energy losses
- Computational enhancements
- Sub-critical versus super-critical flow
- Backwater versus forewater computations
- Boundary conditions
- Limitations of steady one-dimensional computations with HEC-RAS
- Example applications where HEC-RAS could be used
The Webinar Case Study
- Preliminary information
- Assessing the need for steady one-dimensional modeling
- Exploring the project
- Assembling the necessary technical data
GIS Interface and Supporting Data
- GIS basics and geospatial data
- Digital elevation model
- Land cover data
- Other geospatial data
HEC-RAS and the User Interface
- File management
- Geometric data editor
- Steady flow data editor
- Steady flow analysis window and run execution
- Displaying, mapping, and reporting of results
Creating a Steady One-Dimensional HEC-RAS Model
- Project file and setup
- Geometry creation and editing
- Steady flow data including boundary conditions
- Execution and examination of results
- Modeling tips
Adding Special Elements to the Model
- Basics of bridge and culvert hydraulics
- Implementing a bridge
- Implementing a culvert
Webinar Instructions
All attendees must log-on through their own email – attendees may not watch together if they wish to earn continuing education credit. HalfMoon Education Inc. must be able to prove attendance if either the attendee or HalfMoon Education Inc. is audited.
Certificates of completion can be downloaded in PDF form upon passing a short quiz. A link to the quiz will be sent to each qualifying attendee immediately after the webinar. The certificate can be downloaded from the Results page of the quiz upon scoring 80% or higher.
Webinars are presented via GoToWebinar, an easy-to-use application that can be run on most systems and tablets. Instructions and login information will be provided in an email sent close to the date of the webinar. It is highly recommended that you download, install and test the application before the webinar begins by clicking on the link in the email.
GoToWebinar App requirements:
Windows 10 or higher, macOS 11 or higher, Linux, Google Chrome OS
Web Browser:
Google Chrome (most recent 3 versions)
Microsoft Edge (most recent 3 versions)
Internet connection: 1 Mbps or better
Hardware: 2GB of RAM (minimum), 4GB or more of RAM (recommended)
For more information, visit the Support section at www.gotowebinar.com
Credits
Engineers
6.5 PDHs
Landscape Architects
6.5 HSW CE Hours
LACES - Landscape Architecture Continuing Education System
6.5 HSW PDHs
Floodplain Managers
6.5 ASFPM CECs
Geologists
6.5 PDHs*
Continuing Education Information
This webinar is open to the public and is designed to qualify for up to 6.5 PDHs for professional engineers and 6.5 HSW continuing education hours for landscape architects in all states that allow this learning method. Please refer to specific state rules to determine eligibility.
HalfMoon Education is an approved continuing education sponsor for engineers in Florida (Provider No. CEA362), Indiana (License No. CE21700059), Maryland, and New Jersey (Approval No. 24GP00000700). HalfMoon Education is an approved continuing education sponsor for Florida landscape architects (PVD124). HalfMoon Education is deemed an approved continuing education sponsor for New York engineers and landscape architects via its registration with the Landscape Architecture Continuing Education System. Other states do not preapprove continuing education providers or courses.
The Landscape Architecture Continuing Education System has approved this course for 6.5 HSW PDHs. Only full participation is reportable to the LA CES.
This Association of State Floodplain Managers has approved this course for 6.5 CECs for floodplain managers.
*This webinar may offer up to 6.5 PDHs to licensed geologists in some states. HalfMoon Education has not applied for state geologist continuing education approval in states requiring such.
Attendance will be monitored, and attendance certificates will be available after the webinar for those who attend the entire course and score a minimum 80% on the quiz that follows the course (multiple attempts allowed).
*On-Demand Credits*
The preceding credit information only applies to the live presentation. This course in an on-demand format may not be eligible for the same credits as the live presentation; please consult your licensing board(s) to ensure that a structured, asynchronous learning format is appropriate. The following pre-approvals may be available for the on-demand format upon request:
6.5 HSW PDHs (LA CES)
Speakers
Dr. Gregory H. Nail, PhD, PE
Associate Professor in the Engineering Department at the University of Tennessee at MartinDr. Gregory H. Nail is a professor in the Engineering Department at the University of Tennessee at Martin where he teaches a variety of courses including fluid mechanics, hydraulics and hydrology, and hydraulic and hydrologic modeling. He holds a professional engineer’s license based on having passed both the Civil and Mechanical discipline-specific exams. Prior to coming to UT-Martin in 2002, he worked as a research hydraulic engineer for the United States Army Corp of Engineers for 11 years. He continues to be professionally active by working summer internships, carrying on consulting work, supervising senior design projects, and regularly delivering continuation programs, all oriented around computational hydraulic and computational hydrologic modeling. Dr. Nail earned his B.M.E. degree from Auburn University and his M.S. and Ph.D. degrees from Texas A&M University.
