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Presenter: Gregory H. Nail, PhD, PE

Seminar Date:

Seminar Location: Online

Register Now * Coordinator Registration Not Available.


Part 1, Monday, August 24, 2020
11:00 am – 3:00 pm CDT (incl. 30-min. break)

Introductions and Exploring Open Channel Hydraulics

   Introduction and Overview
   Exploring Open Channel Hydraulics

Steady One-Dimensional Open Channel Hydraulics Background and Theory

   Conservation of Energy: Steady One-Dimensional
   Conservation of Momentum
   Conservation of Energy: Energy Losses
   Conservation of Energy: Computational Enhancements
   Bernoulli’s Equation
   Computer based Analysis and Computations

Part 2, Tuesday, August 25, 2020
11:00 am – 3:30 pm CDT (incl. 30-min. break)

Demonstration 1 – Building a HEC-RAS Model without GIS

   HEC-RAS User Interface
   Building a Hydraulic Model without Geo-Referenced Data
   Steady Flow Computational Simulation
   Viewing of Results
   Trapezoidal Channel Example

Demonstration 2 - GIS Basics

   Introduction and Overview
   Geographic versus Projected Coordinate Systems
   Raster versus Vector Files
   ArcMap versus ArcCatalog
   ArcMap Interface Basics
   Digital Elevation Model
   Other Files

Demonstration 3 – Building a HEC-RAS Model with GIS

   RASMapper Interface and the Projection File
   Digital Elevation Models and Geometry Creation
   Building a Hydraulic Model with Geo-Referenced Data
   Steady Flow Computational Simulation
   Display and Interpretation of Results

Demonstration 4 – Typical HEC-RAS River Reach and Mixed Flow

   Subcritical Flow

   Mixed Flow

Demonstration 5 – Typical HEC-RAS Bridge Model

   Cross section locations

   Expansion and contraction coefficients

   Implementing the bridge

   Steady flow simulation

   Viewing and interpreting results

Demonstration 6 – Typical HEC-RAS Culvert Model

   Cross section locations

   Implementing the culvert

   Steady flow simulation

   Viewing and interpreting results

Demonstration 7 – Typical HEC-RAS Encroachment Model

   Encroachment methods

   Steady flow simulation

   Viewing and interpreting results

Webinar Instructions

Each webinar session earns continuing education credit and can be registered for individually. 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 will be provided for each webinar attended and will be sent via email in PDF form about five business days after the conclusion of the series.

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Credit Information:

Who Should Attend

  • Engineers
  • Floodplain Managers

Professional Engineers:
     7.5 PDHs

Floodplain Managers:
     7.5 ASFPM CECs

Continuing Education Credit Information

Individual courses for engineers and architects are not subject to pre-approval. HalfMoon Education does not apply for landscape courses in FL, NC, and NJ or land surveyor courses in FL, KS, NJ, TN and TX, unless expressly stated.

HalfMoon Education Certifying Entities
   American Institute of Architects Continuing Education System (No. J885) International Code Council (No. 1232)
   Landscape Architect Continuing Education System
   American Institute of Certified Planners (APA)
   Boards of Engineering: Florida (No. 0004647), Indiana (License No. CE21700059), Maryland,
      New Jersey (Approval No. 24GP00000700), North Carolina (No. S-0130), and North Dakota.
   Course-by-Course Providers: Association of State Floodplain Managers

HalfMoon Education is deemed a New York-approved continuing education provider
for engineers and architects via its registration with the American Institute of Architects Continuing Education System (Regulations of the Commissioner §68.14(i)(2) and §69.6(i) (2)). NY landscape architects: §79-1.5(i)(2).


Gregory H. Nail, PhD, PE

Associate Professor, University of Tennessee at Martin

Dr. Nail is an associate 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 is a former member of the Executive Committee of the Tennessee American Water Resources Association, and he has lectured on various HEC-RAS modeling topics at the Annual Tennessee Water Resources Symposium, and at other venues. Dr. Nail earned his B.M.E. degree from Auburn University and his M.S. and Ph.D. degrees from Texas A&M University.

Tuition Costs:

Standard Tuition: $299.00
Online Tuition (pre-registration): $299.00
Group Prices
3 or more people each: $199.00

Each registration includes one copy of a manual prepared by the seminar speakers.