HEC-HMS

This event qualifies for 21 PDHs

Participants will gain a practical knowledge of methods for simulation of runoff from storm rainfall. The methods covered relate to the processing of historical and hypothetical (design-storm) rainfall data; estimation of losses (infiltration); transformation of rainfall excess to direct runoff with unit hydrographs; routing of flood waves; calibration of model parameters; and modeling of runoff from watersheds. Experience will be gained in applying the methods with the program Hydrologic Modeling System (HEC-HMS). Where possible, applications will emphasize hydrologic computations for dam safety.

Learning objectives attendees will receive from this course:

Methods to simulate runoff from storm rainfall.
Estimating hydrologic abstractions and transforming excess rainfall using unit hydrograph theory.
Evaluating dam and reservoir performance during flood events.
Running the HMS model on several real-world problems.
Estimating uncertainty in modeling runoff.

Speaker and Presenter Information

Amanda J. Hess, P.E., CFM
Gannett Fleming, Inc.
H & H Group Manager

Ms. Hess is a Hydrology and Hydraulics Group manager and senior project engineer in the Dams and Hydraulics Section of Gannett Fleming, Inc. Amanda received her bachelor’s and master’s degrees in civil engineering from the Pennsylvania State University. She has 20+ years of experience working on dams, flood control projects, and water supply systems and performing a wide range of hydraulic and hydrologic analyses. She is responsible for leading a team of engineers to perform hydrologic and 1-, 2- and 3-D hydraulic analyses for water resources projects and design hydraulic structures related to flood control reservoirs, dams, bridges, and channel improvement construction, rehabilitation, and reconstruction projects, including the design of spillways, outlet works, and stilling basins. Amanda regularly instructs courses on hydrologic and hydraulic modeling and currently serves as a member of ASDSO’s Training Committee.

Greg Richards, P.E., CFM
Gannett Fleming, Inc.
Senior Project Manager

Greg Richards is a senior project manager and hydraulic and hydrologic engineer at Gannett Fleming in Bountiful, Utah. He obtained his B.S. and M.S. degrees in civil engineering from Utah State University. He is responsible for the management and execution of hydraulic and hydrologic analyses and design for flood control reservoirs, spillways, outlet works, stilling basins, bridges, and stream channel improvements. Greg has authored or contributed to several dam safety policy documents on both the federal and state level. These include the Federal Guidelines for Dam Safety: Selecting and Accommodating Inflow Design Floods for Dams (FEMA P-94); Guidelines for Hazard Potential Classification and Inflow Design Flood Selection (including a simplified risk-informed decision-making approach) for the New Mexico Dam Safety Bureau; and Risk-Informed Dam Inspection Guidelines for Montana Department of Natural Resources and Conservation. He was the 2017 recipient of ASDSO’s Joseph J. Ellam President’s Award and currently serves as a member of ASDSO’s Dam Failure and Incidents Committee and chair of the DamFailures.org Subcommittee

Relevant Government Agencies

Army, Dept of Agriculture, Dept of Homeland Security, Dept of the Interior, EPA, Other Federal Agencies, State Government, County Government, City Government, Municipal Government, FEMA, Federal Government, State & Local Government, Foreign Governments/Agencies