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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.

Course Materials

Course Descriptions & Materials

Advanced 1D 2D Unsteady Flow Modeling (July 2018) 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 (36 KB)
Download Course Manual (162 MB)
Download Course Workshops (1.4 GB)
Download Course Workshops Solutions (3.93 GB)

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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 (133 KB)
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)

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CWMS Modeling for Real-Time Water Management (August 2018) 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 (35 KB)
Download Course Manual (141 MB)
Download Course Workshops (7.44 GB)

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Hydrology and Hydraulics for Dam Safety Studies (March 2018) 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, hydrologic loading, estimation of dam breach parameters, dam breaching analysis using HEC-HMS and HEC-RAS, unsteady flow modeling with HEC-RAS, and using RAS-Mapper for model setup and inundation mapping. HEC-HMS version 4.3 Beta, or a more recent version, should be used for the HEC-HMS workshops and HEC-RAS version 5.0.4 Beta, or a more recent version, should be used for the HEC-RAS workshops. Due to file size, the terrain tif was removed from a majority of the HEC-RAS workshops prior to posting the material to the website. A copy of the terrain tif file is located in the “TerrainData” folder within the Workshop Files directory. Copy the terrain tiff to the Terrain folders in the workshops folders for Days 3, 4, and 5. 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 (50 KB)
Download Course Manual (52.4 MB)
Download Course Workshops (2.35 GB)

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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 (14 KB)
Download Course Manual (192 MB)
Download Course Workshops (226 MB)

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Hydrologic Modeling with HEC-HMS (April 2018) 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 4.3.

Download Course Agenda (24 KB)
Download Course Manual (49.5 MB)
Download Course Workshops (518 MB)

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Reservoir System Analysis with HEC-ResSim (February 2018) 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 3.3 which will be available from our website in March 2019. In the meantime, you can use the HEC-ResSim 3.1.

Download Course Agenda (37 KB)
Download Course Manual (184 MB)
Download Course Workshops (8.9 MB)

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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 (116 KB)
Download Course Manual (173 MB)
Download Course Workshops (813 MB)

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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 (30 KB)
Download Course Manual (65.9 MB)
Download Course Workshops (57.4 MB)

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HEC Workshop Materials

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 (64 KB)
Download Presentations (17.8 MB)
Download Workshop Instructions and Files (2.12 GB)

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Workshop: Application of HEC-HMS Using Gridded Precipitation in Watersheds Outside of the United States (May 2017) This workshop is designed to help users applying HEC-GeoHMS and HEC-HMS in watersheds outside of the United States. In particular, this workshop will demonstrate the application of gridded precipitation within HEC-HMS outside of the regions covered by the HRAP and SHG grid systems. Prior to HEC-HMS version 4.2, it was not possible to utilize the gridded precipitation option in HEC-HMS for areas outside of the U.S. due to limitations in how gridded data was stored in HEC-DSS.

Download Workshop Document (4.17 MB)
Download Program Setup Document (164 KB)
Download ASCII Grid Import Export (12.0 KB)
Download GageInterp User's Manual (1.46 MB)
Download Workshop FIles (666 MB)

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Workshop: Basic HEC-HMS (First European HEC Workshop, October 2016) This workshop walks a participant through the basic steps of setting up an HEC-HMS model and calibrating the model to observed flood events. The new uncertainty analysis compute option is contained in the workshop as well. Download of available course materials is provided below.

Download Lecture - Hydrologic Modeling Systems (HEC-HMS) What's New (5.97 MB)
Download Workshop - Build a Basic HEC-HMS Model from Scratch (3.12 MB)
Download Workshop - Starting Files (266 KB)
Download Workshop - Completed Workshop Files (1.21 MB)

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