The United States Army Corps of Engineers (USACE) has granted access to the information on this webpage for instructional purposes only. The training material is intended for
individual instruction and may be used, copied, and redistributed freely. However, the Hydrologic Engineering Center (CEIWR-HEC) should be attributed as the source of the
training materials in any subsequent re-use. Technical support on the training material within USACE is provided through an annual subscription service. Support is not provided
to non-USACE individuals and organizations; however, if any issues with the training materials or with the software while running the workshops is encountered, from the
Support Policy webpage, please report issues to the appropriate software development team.
Back to the top
#352 - Advanced 1D 2D Unsteady Flow Modeling (July 2019)
This is an advanced course in applying the computer program HEC-RAS. The course provides participants with the knowledge to effectively use HEC-RAS to analyze difficult hydraulic
conditions in natural and constructed channels, utilizing one-dimensional (1D) and two-dimensional (2D) modeling techniques. Topics include: developing terrain models for 2D modeling;
creating a 2D computational mesh; boundary conditions for 2D flow areas; hooking up 1D elements to 2D flow areas; running a combined 1D/2D model; viewing 1D/2D results with RAS Mapper;
hydraulic structures inside of 2D areas; and detailed channel and floodplain modeling with 2D flow areas. Special topics for dam and levee breaching and using 2D modeling for hydraulic
structures are included as well. HEC-RAS version 5.0.5, or a more recent version, should be used when working through the workshop examples. Due to file size, some of the solution files
were deleted prior to posting the material to the website. The solution projects should be re-run using HEC-RAS 5.0.5 to generate results for comparison to the workshop solutions.
Download Course Agenda
Download Course Manual (205 MB)
Download Course Workshops (1.39 GB)
Download Course Workshops Solutions (1.31 GB)
Back to the top
#369 - Advanced Applications of HEC-HMS (March 2019)
This course explores advanced hydrologic modeling concepts and applications of the Hydrologic Engineering Center's Hydrologic Modeling System (HEC-HMS). Topics covered include
continuous simulation, model calibration/validation, snow hydrology, model optimization, uncertainty analysis, frequency storms, and precipitation-runoff forecasting. Knowledge
gained within the lectures is applied through the use of HEC-HMS in complementary workshops which highlight specific capabilities and topics. The lectures and workshops were
developed using an alpha version of HEC-HMS 4.4. If you are interested in obtaining a copy of HEC-HMS version 4.4 for use with these materials, please
contact HEC.
Download Course Agenda
Download Course Lectures (46.8 MB)
Download Course Workshop Instructions (12.7 MB)
Download Course Workshop Initial Conditions (228 MB)
Download Course Workshop Final Conditions (252 MB)
Back to the top
#155 - CWMS Modeling for Real-Time Water Management (January 2019)
This class provides water managers the training necessary to effectively use hydrologic, hydraulic, reservoir, and flood impact modeling software within HEC-RTS (Real Time Simulation)
for real-time water management. Students will learn how to setup an HEC-RTS Watershed for modeling capabilities. Students will also learn the advanced features of modeling within HEC-RTS,
including real-time calibration and execution of modeling programs to support Corps project operations decisions. This class does not address the installation of HEC-RTS or the development
of individual models for use in HEC-RTS.
Please note this course was originally intended for training in the Corps Water Management System (CWMS) Control and Visualization Interface, or CAVI software. HEC-RTS is the public version
of the CWMS CAVI with the key difference being the use of an Oracle database for data storage and retrieval in CMWS. Due to these differences, some of the original course content has been
removed. For this course please use the latest version of HEC-RTS available on the HEC website.
Download Course Agenda
Download Course Manual (141 MB)
Download Course Workshops (7.44 GB)
Back to the top
#123 - Flood Frequency Analysis (May 2018)
This course provides users with theoretical background in hydrologic frequency analysis, as well as practice using analysis techniques and tools required for practical applications. Topics
covered include univariate frequency analysis, challenges in flood frequency analysis and Federal guidance, uncertainty and use of regionalization to improve estimates, and methods for
multivariate frequency analysis. Knowledge gained within the lectures is applied through the use of the Hydrologic Engineering Center’s Statistical Software Package (HEC-SSP) as well as
other commercial software packages in complementary workshops. The lectures and workshops were developed using HEC-SSP v2.2 which can be obtained here:
HEC-SSP Downloads.
Online Training Materials available on Confluence
Back to the top
#320 - Hydrology and Hydraulics for Dam Safety Studies (March 2020)
The objective of the workshop is to learn how to perform hydrologic and hydraulic modeling using HEC-HMS and HEC-RAS in support of Dam Safety studies. Topics presented include development of
Probable Maximum Precipitation (PMP), hydrologic modeling for PMP/PMF events, flow-frequency analysis, hydrologic loading, estimation of dam breach parameters, dam breaching analysis using HEC-RAS,
unsteady flow modeling with HEC-RAS, and using RAS-Mapper for model setup and inundation mapping. HEC-HMS version 4.5, or a more recent version, should be used for the HEC-HMS workshops and HEC-RAS
version 5.0.7, or a more recent version, should be used for the HEC-RAS workshops. Guidance for how to perform the hydrologic analysis for USACE dam safety studies is developed by the USACE Risk
Management Center (RMC) with input from USACE District offices and HEC. Additional training from the RMC for all hydrologic modeling components of a Semi Quantitative Risk Assessment (SQRA) study is
available from the RMC. Guidance for dam break modeling scenarios using HEC-RAS is a combination of guidance from the Modeling, Mapping and Consequence (MMC) center and RMC, with input from USACE
District offices and HEC.
Download Course Agenda
Download Course Manual (70 MB)
Download Course Workshops (1.94 GB)
Back to the top
#161 - Hydrologic Analysis for Ecosystem Restoration (March 2021)
The objectives of this course are to provide participants with: 1) an understanding of the issues in restoration studies; 2) an overview of Corps policies and analysis methods for riverine ecosystem
restoration studies; 3) an understanding of the role and analytical processes of hydrologic engineering required during the conduct of the studies; and 4) insights into the applicability of a range
of tools for the various hydrologic analyses necessary in planning and design of these features.
Download Course Agenda
Download Course Manual (210 MB)
Download Course Workshops (244 MB)
Download Course Software (240 MB)
Back to the top
#219 - Hydrologic Engineering Applications of Geographic Information Systems (April 2015)
This course provides instruction in the application of GIS technologies for watershed and stream network delineation, computation of watershed and stream characteristics, hydrologic parameter
estimation, development of the channel geometry for a 1-dimensional river hydraulics model, and mapping of water depths. Hands-on experience in applying ArcGIS and HEC products, HEC-GeoHMS
and HEC-GeoRAS, to perform such analyses is included. Download of available course materials is provided below. The lectures and workshops utilize ArcGIS 10.2, HEC-GeoHMS 10.2, and HEC-GeoRAS
10.2. Versions 10.2 of HEC-GeoHMS and HEC-GeoRAS are available from the HEC webpage. Other versions of HEC-GeoHMS and HEC-GeoRAS can be used for the workshops; however, the workshops were
specifically designed using the 10.2 versions and there might be some problems encountered when using older or newer versions of the software. Some workshops were designed to be placed in a
specific directory on a computer, the directory is included in the workshop instructions. HEC is in the process of integrating GIS capabilities directly within HEC-RAS and HEC-HMS. These
capabilities will replace HEC-GeoHMS and HEC-GeoRAS and the training material will be updated.
Download Course Agenda
Download Course Manual (192 MB)
Download Course Workshops (226 MB)
Back to the top
#178 - Hydrologic Modeling with HEC-HMS (March 2021) This course serves as an introduction to hydrologic modeling and application of the
Hydrologic Engineering Center's Hydrologic Modeling System (HEC-HMS) and covers topics of precipitation, infiltration, surface runoff, channel routing, and parameter estimation. Knowledge gained
in lectures is applied by using HEC-HMS to simulate these processes within the context of the watershed. Each segment of the class is part of a hypothetical case study where students learn the
basic steps in developing an HEC-HMS model. Download of available course materials is provided below. The workshops were developed using HEC-HMS Version 4.8.
Online Training Materials available on Confluence
Back to the top
#098 - Reservoir System Analysis with HEC-ResSim (February 2020) This course is intended for water resource
professionals who are involved in various aspects of reservoir operations studies. A primary objective of the course is to provide participants with the capability to build a reservoir
simulation model using HEC-ResSim and to analyze the results generated. Topics presented in this course include: an introduction to reservoir system simulation, including data requirements
and operational goals; an overview of the HEC-ResSim software; development of a shared watershed schematic, a reservoir network, and basic and advanced operating rules used to describe a
reservoir operating plan including emergency gate operations; development of alternatives and simulations; analysis of results; the available hydrologic routing methods; reservoir system
operations; hydropower operation; conditional rule application with IF-THEN-ELSE statements; and scripting. The lecture materials and workshops were developed using HEC-ResSim Version 3.4
which is not yet ready for release. In the meantime, you can use the HEC-ResSim 3.1.
Download Course Agenda
Download Course Manual (62 MB)
Download Course Workshops (9.33 MB)
Back to the top
#209 - Risk Analysis for Flood Damage Reduction Projects (February 2021)
This course presents risk assessment methods and concepts, many of which are required by Corps guidance. The objective is to enable participants to
readily adapt these methods and concepts to their own studies and projects after successfully completing the course. Policy issues, concepts in
statistical analysis, and risk and uncertainty methods used in the evaluation of flood risk management projects are emphasized in the course. Workshops
provide participants with the opportunity to apply the course's concepts using the Hydrologic Engineering Center Flood Damage Reduction Analysis
(HEC-FDA) software program, using HEC-FDA Version 1.4.2.
Online Training Materials available on Confluence
Back to the top
#058 - Statistical Methods in Hydrology (June 2021) This course provides users with theoretical background in statistical analysis as well as
practice using analysis techniques and tools required for practical applications. Topics covered include univariate and multivariate frequency analysis, regional analysis of hydrometeorological data, and
regression analysis. Knowledge gained within the lectures is applied through the use of the Hydrologic Engineering Center’s Statistical Software Package (HEC-SSP) as well as other commercial software packages
in complementary workshops.
Online Training Materials available on Confluence
Back to the top
#114 - Steady Flow Water Surface Profile Computation Using HEC-RAS (June 2019)This course teaches the concepts of open channel flow concepts, hydraulic model data requirements,
HEC-RAS input requirements, laying out cross sections for 1D hydraulic modeling, application of bridge and culvert routines, calibration of a steady flow hydraulics model, floodway determination, an overview of Optional
capabilities, and output analysis. The HEC-RAS software will be included in lectures and workshops. Participants have an opportunity to prepare input and analyze output during workshops. The class lectures and workshops
were developed and run with version 5.0.7.
Download Course Agenda
Download Course Manual (140 MB)
Download Workshops (15.3 MB)
Download Workshop Solutions (23.4 MB)
Back to the top
#188 - Unsteady Flow Analysis Using HEC-RAS (June 2018)
This course provides instruction to effectively utilize the Hydrologic Engineering Center's River Analysis System (HEC-RAS) software to analyze hydraulic conditions that require one-dimensional
unsteady flow modeling. Topics include river mechanics and the unsteady flow equations; using HEC-DSS data with HEC-RAS; overview of unsteady flow modeling; data requirements for unsteady
flow models; boundary and initial conditions; overview of model output; modeling bridges and culverts; inline and lateral hydraulic structures; storage areas and storage area connections;
model calibration; model stability, accuracy, and sensitivity; trouble shooting; modeling urban areas; and advanced features for unsteady flow (mixed flow regime, pump stations, dam and levee
breaching). HEC-RAS version 5.0.3, or a more recent version, should be used when working through the workshop examples.
Download Course Agenda
Download Course Manual (173 MB)
Download Course Workshops (813 MB)
Back to the top
#152 - Water Resources Data Management with HEC-DSSVue (September 2017)
This class is designed to provide Corps water resource professionals with the basic skills to utilize the HEC Data Storage System (HEC-DSS) to manage, analyze and display data using the HEC
Data Storage System Visual Utility Engine (HEC-DSSVue) and associated programs. The procedures and programs to be presented will provide a convenient system to support a wide variety of
hydrologic investigations including project planning and real-time water control. Workshops will demonstrate some of the potential applications. Upon completion, participants will have
sufficient knowledge to plan applications for their studies.
The software used in this class includes HEC-DSSVue 3.0 which as of the class date has not been released to the public. The latest public release is contained in HEC-RTS 3.0 which contains
HEC-DSSVue 2.5. Most of the features in DSSVue 3.0 will be available in HEC-DSSVue 2.5 if needed. However, any portion of the class making use of DSS version 7 files will not be available
in HEC-DSSVue prior to version 3.0.
Download Course Agenda
Download Course Manual (67.3 MB)
Download Course Workshops (58.5 MB)
Back to the top
Back to the top
New Features Coming to HEC-RAS 5.1 This series of presentations provides an introduction to new features expected with the
release of HEC-RAS 5.1. Significant new features that will dramatically improve the applicability and range of modeling problems in which HEC-RAS can be used. New hydraulic
capabilities will include spatial precipitation (gridded and point gage options); spatial infiltration; wind forces for 1D and 2D modeling; a new shallow water solution scheme
and turbulence modeling; 1D finite volume solution algorithm; pump stations for 2D areas; bridge modeling inside of 2D areas; mud and debris flow modeling; and 2D sediment
transport. There will be a new 3D viewer for terrain and model results. HEC-RAS Mapper will provide for structure layout in HEC-RAS Mapper; terrain modification tools, RASter
calculator for evaluating results, and 3D Google Earth export capabilities.
Download New Features Coming in HEC-RAS 5.1
Download New RAS Mapper 5.1 Tools
Download HEC-RAS 5.1 Mud and Debris Flow
Download HEC-RAS 5.1 2D Sediment Transport
Click the links below to view new features coming in HEC-RAS 5.1:
Back to the top
Workshop: Application of HEC software to Periodic Assessment Studies A series of lectures and workshops were developed for the USACE Dam Safety
program to illustrate periodic assessment level of analysis and application of HEC software. The material was posted for the user community to see additional examples for how to apply
both HEC-SSP and HEC-HMS to typical study applications. The training material contains publically available information and results presented in the workshops are only for learning purposes,
the results do not reflect actual design events. HEC-SSP version 2.1.1 and HEC-HMS 4.2.1 were used in the development of the workshops.
Download Agenda
Download Presentations (17.8 MB)
Download Workshop Instructions and Files (2.12 GB)
Back to the top
Workshop: Bulletin 17C Short Course (June 2019)
Federal Interagency Sedimentation and Hydrologic Modeling Conference, Reno, NV
Flood-frequency analysis of peak streamflow records provides the essential statistical interpretation of hydrologic data for estimating flood risk and for floodplain mapping. This workshop provides
an overview and refresher on flood-frequency analysis of peak streamflow data, as well as introducing methods adopted in the new federal guidelines, Bulletin 17C at https://doi.org/10.3133/tm4B5. These
new methods include a generalized method-of-moments estimator, the Expected Moments Algorithm (EMA), for dealing with zeroes, low outliers and historical data. It also employs a generalized version of
the Grubbs-Beck test (MGB) for the identification of potentially influential low floods (PILFs). Participants will learn about methods implemented in Bulletin 17C, how to properly characterize flood
peaks for inclusion in a Bulletin 17C analysis, and how to interpret Bulletin 17C flood frequency analyses. The Hydrologic Engineering Center’s Statistical Software Package (HEC-SSP) will be used along
with several examples to demonstrate specific capabilities of Bulletin 17C.
Download Agenda
Download Lectures (25.2 MB)
Download Quiz
Back to the top