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Download HEC-RAS

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  • HEC-RAS Version 3.1.3 Software Package

    To download HEC-RAS 3.1.3, check the box below and then click on the "Download Selected" button. An e-mail will be sent to you with the download link. When you have downloaded the file, double-click on it to install the program.

    Download HEC-RAS Version 3.1.3 Software Package Program
    File Size: 111020320 bytes
    File Date: Fri May 9 07:29:01 2008

  • HEC-RAS Version 3.1.2 Software Package

    To download the HEC-RAS 3.1.2 software package, check all of the boxes below and then click on the "Download Selected" button. An e-mail will be sent to you with the download links.

    Note: If you only have Windows 3.x, please download HEC-RAS version 2.0. But be aware that some bugs have been fixed in HEC-RAS 3.1.2.

    Download HEC-RAS Version 3.1.2 Software Package Program Disk 1
    File Size: 5120000 bytes
    File Date: Thu Jun 24 10:25:35 2004

    Download HEC-RAS Version 3.1.2 Software Package Program Disk 2
    File Size: 5120000 bytes
    File Date: Thu Jun 24 10:29:00 2004

    Download HEC-RAS Version 3.1.2 Software Package Program Disk 3
    File Size: 5120000 bytes
    File Date: Thu Jun 24 10:32:37 2004

    Download HEC-RAS Version 3.1.2 Software Package Program Disk 4
    File Size: 5120000 bytes
    File Date: Thu Jun 24 10:35:50 2004

    Download HEC-RAS Version 3.1.2 Software Package Program Disk 5
    File Size: 5120000 bytes
    File Date: Thu Jun 24 10:39:13 2004

    Download HEC-RAS Version 3.1.2 Software Package Program Disk 6
    File Size: 5120000 bytes
    File Date: Thu Jun 24 10:43:35 2004

    Download HEC-RAS Version 3.1.2 Software Package Program Disk 7
    File Size: 5120000 bytes
    File Date: Thu Jun 24 10:47:16 2004

    Download HEC-RAS Version 3.1.2 Software Package Program Disk 8
    File Size: 5120000 bytes
    File Date: Thu Jun 24 10:50:48 2004

    Download HEC-RAS Version 3.1.2 Software Package Program Disk 9
    File Size: 5120000 bytes
    File Date: Thu Jun 24 10:59:26 2004

    Download HEC-RAS Version 3.1.2 Software Package Program Disk 10
    File Size: 249215 bytes
    File Date: Thu Jun 24 11:00:07 2004

    To install BOSS HEC-RAS version 3.1.2 software package, perform the following steps:

    1. Download BOSS HEC-RAS version 3.1.2 software package program disk files. Save them to a temporary directory (e.g., c:\temp).

    2. Run the installation program INSTALL.EXE.

    3. The installation program will display a security string. To acquire a matching password, please contact BOSS International.

        Telephone: 800-488-4775
         608-258-9910
        Fax: 608-258-9943
        Email: support@bossintl.com

    4. Enter the password.

    5. Follow the installation instructions.
  • HEC-RAS Version 3.1.1 Software Package

    To download the HEC-RAS 3.1.1 software package, check all of the boxes below and then click on the "Download Selected" button. An e-mail will be sent to you with the download links.

    Note: If you only have Windows 3.x, please download HEC-RAS version 2.0. But be aware that some bugs have been fixed in HEC-RAS 3.1.1.

    Download HEC-RAS Version 3.1.1 Software Package Program Disk 1
    File Size: 5120000 bytes
    File Date: Wed May 12 19:50:08 2004

    Download HEC-RAS Version 3.1.1 Software Package Program Disk 2
    File Size: 5120000 bytes
    File Date: Wed May 12 19:52:57 2004

    Download HEC-RAS Version 3.1.1 Software Package Program Disk 3
    File Size: 5120000 bytes
    File Date: Wed May 12 19:55:35 2004

    Download HEC-RAS Version 3.1.1 Software Package Program Disk 4
    File Size: 5120000 bytes
    File Date: Wed May 12 19:58:28 2004

    Download HEC-RAS Version 3.1.1 Software Package Program Disk 5
    File Size: 5120000 bytes
    File Date: Wed May 12 20:01:26 2004

    Download HEC-RAS Version 3.1.1 Software Package Program Disk 6
    File Size: 5120000 bytes
    File Date: Wed May 12 20:04:15 2004

    Download HEC-RAS Version 3.1.1 Software Package Program Disk 7
    File Size: 5120000 bytes
    File Date: Wed May 12 20:06:49 2004

    Download HEC-RAS Version 3.1.1 Software Package Program Disk 8
    File Size: 5120000 bytes
    File Date: Wed May 12 20:09:24 2004

    Download HEC-RAS Version 3.1.1 Software Package Program Disk 9
    File Size: 5120000 bytes
    File Date: Wed May 12 20:12:08 2004

    Download HEC-RAS Version 3.1.1 Software Package Program Disk 10
    File Size: 755414 bytes
    File Date: Wed May 12 20:12:32 2004

    To install BOSS HEC-RAS version 3.1.1 software package, perform the following steps:

    1. Download BOSS HEC-RAS version 3.1.1 software package program disk files. Save them to a temporary directory (e.g., c:\temp).

    2. Run the installation program INSTALL.EXE.

    3. The installation program will display a security string. To acquire a matching password, please contact BOSS International.

        Telephone: 800-488-4775
         608-258-9910
        Fax: 608-258-9943
        Email: support@bossintl.com

    4. Enter the password.

    5. Follow the installation instructions.
  • HEC-RAS Version 3.0 Software Package

    To download the HEC-RAS 3.0 software package, check all of the boxes below and then click on the "Download Selected" button. An e-mail will be sent to you with the download links.

    Note: If you only have Windows 3.x, please download HEC-RAS version 2.0. But be aware that some bugs have been fixed in HEC-RAS 3.0.

    Download HEC-RAS Version 3.0 Software Package Program Disk 1
    File Size: 1454080 bytes
    File Date: Thu Jan 3 11:25:22 2002

    Download HEC-RAS Version 3.0 Software Package Program Disk 2
    File Size: 1454080 bytes
    File Date: Thu Jan 3 11:26:14 2002

    Download HEC-RAS Version 3.0 Software Package Program Disk 3
    File Size: 1454080 bytes
    File Date: Thu Jan 3 11:26:58 2002

    Download HEC-RAS Version 3.0 Software Package Program Disk 4
    File Size: 1454080 bytes
    File Date: Thu Jan 3 11:27:45 2002

    Download HEC-RAS Version 3.0 Software Package Program Disk 5
    File Size: 1454080 bytes
    File Date: Thu Jan 3 11:28:29 2002

    Download HEC-RAS Version 3.0 Software Package Program Disk 6
    File Size: 1454080 bytes
    File Date: Thu Jan 3 11:29:12 2002

    Download HEC-RAS Version 3.0 Software Package Program Disk 7
    File Size: 628703 bytes
    File Date: Thu Jan 3 11:29:33 2002

    To install BOSS HEC-RAS version 3.0 software package, perform the following steps:

    1. Download BOSS HEC-RAS version 3.0 software package program disk files. Save them to a temporary directory (e.g., c:\temp).

    2. Run the installation program INSTALL.EXE.

    3. The installation program will display a security string. To acquire a matching password, please contact BOSS International.

        Telephone: 800-488-4775
         608-258-9910
        Fax: 608-258-9943
        Email: support@bossintl.com

    4. Enter the password.

    5. Follow the installation instructions.

    6. After BOSS HEC-RAS is installed, please refer to WhatsNewInRas30.TXT for descriptions on the powerful new features of BOSS HEC-RAS.
  • HEC-RAS Version 2.2 Software Package

    To download the BOSS HEC-RAS version 2.2 complete package, check all of the boxes below and then click on the "Download Selected" button. An e-mail will be sent to you with the download links.

    Note: If you only have Windows 3.x, please download HEC-RAS version 2.0. But be aware that some bugs have been fixed in HEC-RAS 2.2.

    Download HEC-RAS Version 2.2 Software Package Program Disk 1
    File Size: 1454080 bytes
    File Date: Tue Jul 20 12:49:49 1999

    Download HEC-RAS Version 2.2 Software Package Program Disk 2
    File Size: 1454080 bytes
    File Date: Tue Jul 20 12:51:32 1999

    Download HEC-RAS Version 2.2 Software Package Program Disk 3
    File Size: 1454080 bytes
    File Date: Tue Jul 20 12:53:09 1999

    Download HEC-RAS Version 2.2 Software Package Program Disk 4
    File Size: 1454080 bytes
    File Date: Tue Jul 20 12:55:06 1999

    Download HEC-RAS Version 2.2 Software Package Program Disk 5
    File Size: 1454080 bytes
    File Date: Tue Jul 20 12:56:48 1999

    Download HEC-RAS Version 2.2 Software Package Program Disk 6
    File Size: 1386493 bytes
    File Date: Tue Jul 20 12:58:28 1999

    To install BOSS HEC-RAS version 2.2 software package, perform the following steps:

    1. Download BOSS HEC-RAS version 2.2 software package program disk files. Save them to a temporary directory (e.g., c:\temp).

    2. Run the installation program INSTALL.EXE.

    3. The installation program will display a security string. To acquire a matching password, please contact BOSS International.

        Telephone: 800-488-4775
         608-258-9910
        Fax: 608-258-9943
        Email: support@bossintl.com

    4. Enter the password.

    5. Follow the installation instructions.

    6. After BOSS HEC-RAS is installed, please refer to README.TXT for descriptions on the powerful new features of BOSS HEC-RAS.
  • HEC-RAS Version 2.0 Software Package

    To install the BOSS HEC-RAS version 2.0 complete package, check the all of the boxes below and click on the "Download Selected" button. An e-mail will be sent to you with the download links. It contains the HEC-RAS 2.0 program files and examples.

    Download HEC-RAS Version 2.0 Software Package Program Disk 1
    File Size: 1413120 bytes
    File Date: Sat Jul 12 16:40:49 1997

    Download HEC-RAS Version 2.0 Software Package Program Disk 2
    File Size: 1454080 bytes
    File Date: Fri Jun 6 02:03:19 2003

    Download HEC-RAS Version 2.0 Software Package Program Disk 3
    File Size: 1454080 bytes
    File Date: Fri Jun 6 02:04:17 2003

    Download HEC-RAS Version 2.0 Software Package Program Disk 4
    File Size: 713890 bytes
    File Date: Fri Jun 6 02:04:42 2003

    To install BOSS HEC-RAS version 2.0 software package, perform the following steps:

    1. Download BOSS HEC-RAS version 2.0 software package program disk files. Save them to a temporary directory (e.g., c:\temp).

    2. Run the installation program INSTALL.EXE.

    3. The installation program will display a security string. To acquire a matching password, please contact BOSS International.

        Telephone: 800-488-4775
         608-258-9910
        Fax: 608-258-9943
        Email: support@bossintl.com

    4. Enter the password.

    5. Follow the installation instructions.

    6. After BOSS HEC-RAS is installed, please refer to README.TXT for descriptions on the powerful new features of BOSS HEC-RAS.
  • HEC-DSS Installation Files

    To download the HEC-DSS installation files, check all of the boxes below and then click on the "Download Selected" button. An e-mail will be sent to you with the download links.

    Download DSS Installation File (1 of 3) (Self-Extracting Zip File)
    File Size: 971954 bytes
    File Date: Wed Jan 2 13:37:43 2002

    Download DSS Installation File (2 of 3) (Self-Extracting Zip File)
    File Size: 1165555 bytes
    File Date: Wed Jan 2 13:38:56 2002

    Download DSS Installation File (3 of 3) (Self-Extracting Zip File)
    File Size: 1147101 bytes
    File Date: Wed Jan 2 13:39:36 2002

  • HEC-DSS Driver Files

    To download the HEC-DSS driver files, check all of the boxes below and then click on the "Download Selected" button. An e-mail will be sent to you with the download links.

    Download DSS Driver File (1 of 2) (Self-Extracting Zip File)
    File Size: 936176 bytes
    File Date: Wed Jan 2 13:37:12 2002

    Download DSS Driver File (2 of 2) (Self-Extracting Zip File)
    File Size: 1206829 bytes
    File Date: Wed Jan 2 13:38:21 2002

  • HEC-RAS Technical Documentation

    To download the following technical documents, check the box of the desired documents below and then click the "Download Selected" button. An e-mail will be sent to you with the download links. These documents are available in Adobe Acrobat 4.0 PDF format.

    Download HEC-RAS 3.1 User Manual (PDF File)


    File Size: 8625837 bytes
    File Date: Tue Jan 14 16:00:44 2003

    The HEC-RAS User Manual is a detailed overview of the HEC-RAS 3.1. It provides a description of the major features found in HEC-RAS.

    Download HEC-RAS 3.1 Hydraulic Reference Manual (PDF File)


    File Size: 7813074 bytes
    File Date: Tue Jan 14 15:56:04 2003

    A detailed presentation of the hydraulic capabilities of the HEC-RAS 3.1 modeling system.

    Download HEC-RAS 3.1 Applications Guide (PDF File)


    File Size: 7158114 bytes
    File Date: Tue Jan 14 15:51:57 2003

    A complete set of HEC-RAS 3.1 tutorials is available.

    Download HEC-RAS 3.0 Release Notes (PDF File)


    File Size: 115696 bytes
    File Date: Tue Mar 27 12:41:10 2001

    The HEC-RAS 3.0 Release Notes describes the new features and bug fixes in HEC-RAS 3.0.

    Download HEC-RAS 3.0 User Manual (PDF File)


    File Size: 3586792 bytes
    File Date: Fri Apr 20 02:11:55 2001

    The HEC-RAS User Manual is a detailed overview of the HEC-RAS 3.0. It provides a description of the major features found in HEC-RAS.

    Download HEC-RAS 3.0 Applications Guide (PDF File)


    File Size: 4705002 bytes
    File Date: Fri Apr 20 02:07:46 2001

    A complete set of HEC-RAS 3.0 tutorials is available.

    Download HEC-RAS 3.0 Hydraulic Reference Manual (PDF File)


    File Size: 5114341 bytes
    File Date: Fri Apr 20 02:10:06 2001

    A detailed presentation of the hydraulic capabilities of the HEC-RAS 3.0 modeling system.

    Download HEC-RAS 2.2 Release Notes (PDF File)


    File Size: 14884 bytes
    File Date: Wed Dec 23 18:43:07 1998

    The HEC-RAS 2.2 Release Notes describes the new features and bug fixes in HEC-RAS 2.2.

    Download HEC-RAS 2.2 User Manual (PDF File)


    File Size: 2211731 bytes
    File Date: Thu Feb 3 03:37:05 2000

    The HEC-RAS User Manual is a detailed overview of the HEC-RAS 2.2. It provides a description of the major features found in HEC-RAS.

    Download HEC-RAS 2.2 Applications Guide (PDF File)


    File Size: 2477934 bytes
    File Date: Thu Feb 3 03:31:07 2000

    A complete set of HEC-RAS 2.2 tutorials is available.

    Download HEC-RAS 2.2 Hydraulic Reference Manual (PDF File)


    File Size: 2520904 bytes
    File Date: Thu Feb 3 03:34:17 2000

    A detailed presentation of the hydraulic capabilities of the HEC-RAS 2.2 modeling system.

    Download HEC-RAS 2.0 User Manual (PDF File)


    File Size: 2729798 bytes
    File Date: Thu Feb 3 03:27:31 2000

    The HEC-RAS User Manual is a detailed overview of the HEC-RAS 2.0. It provides a description of the major features found in HEC-RAS.

    Download HEC-RAS 2.0 Applications Guide (PDF File)


    File Size: 1972345 bytes
    File Date: Thu Feb 3 03:21:26 2000

    A complete set of HEC-RAS 2.0 tutorials is available.

    Download HEC-RAS 2.0 Hydraulic Reference Manual (PDF File)


    File Size: 1967942 bytes
    File Date: Thu Feb 3 03:23:55 2000

    A detailed presentation of the hydraulic capabilities of the HEC-RAS 2.0 modeling system.
  • HEC-DSS Support Documentation

    To download the following technical documents, check the box of the desired documents below and then click the "Download Selected" button. An e-mail will be sent to you with the download links. These documents are available in Adobe Acrobat 4.0 PDF format.

    Download DSS OVERVIEW (PDF File)


    File Size: 63796 bytes
    File Date: Wed Jan 2 13:39:53 2002

    This PDF document is an OVERVIEW (summary) of HEC-DSS.

    Download DSS Support Document for REPGEN (PDF File)


    File Size: 70789 bytes
    File Date: Wed Jan 2 13:39:58 2002

    This PDF document describes how to use the REPGEN report generator.

    Download DSS User Manual Appendix A (PDF File)


    File Size: 26036 bytes
    File Date: Wed Jan 2 13:35:51 2002

    This PDF document (Appendix A) lists DSSMATH commands.

    Download DSS User Manual Appendix B (PDF File)


    File Size: 78783 bytes
    File Date: Wed Jan 2 13:35:53 2002

    This PDF document (Appendix B) describes the function computation.

    Download DSS User Manual Appendix C (PDF File)


    File Size: 19622 bytes
    File Date: Wed Jan 2 13:35:54 2002

    This PDF document (Appendix C) describes how the user can modify existing DSSMATH computations to create new user-defined functions.

    Download DSS User Manual Appendix D (PDF File)


    File Size: 1208877 bytes
    File Date: Wed Jan 2 13:36:31 2002

    This PDF document (Appendix D) provides examples of function computations.

    Download DSS Support Document for DSPLAY (PDF File)


    File Size: 360660 bytes
    File Date: Wed Jan 2 13:36:43 2002

    This PDF document describes how DSPLAY provides a quick and simple means of graphically displaying data stored in an HEC-DSS.

    Download DSS Support Document for DSSITS (PDF File)


    File Size: 10240 bytes
    File Date: Wed Jan 2 13:39:37 2002

    This PDF document describes how DSSITS enters irregular interval time series data into a HEC-DSS database file.

    Download DSS Support Document for DSSMATH (PDF File)


    File Size: 33712 bytes
    File Date: Wed Jan 2 13:39:39 2002

    This PDF document describes explains how DSSMATH manipulates mathematical equations using HEC-DSS data.

    Download DSS Support Document for DSSPD (PDF File)


    File Size: 17136 bytes
    File Date: Wed Jan 2 13:39:40 2002

    This PDF document describes how to use DSSPD for entering paired data into a HEC-DSS database file.

    Download DSS Support Document for DSSTS (PDF File)


    File Size: 10567 bytes
    File Date: Wed Jan 2 13:39:41 2002

    This PDF document describes how DSSTS enters regular time series data into a HEC-DSS database file.

    Download DSS Support Document for DSSTXT (PDF File)


    File Size: 18707 bytes
    File Date: Wed Jan 2 13:39:42 2002

    This PDF document describes how DSSTXT stores and retrieves text data from a DSS file.

    Download DSS Support Document for DSSUTL (PDF File)


    File Size: 122411 bytes
    File Date: Wed Jan 2 13:39:48 2002

    This PDF document describes how DSSUTL performs utility functions on data stored in the HEC-DSS.

    Download DSS Support Document for DWINDO (PDF File)


    File Size: 52447 bytes
    File Date: Wed Jan 2 13:39:50 2002

    This PDF document describes how DWINDO provides interactive entry and editing of HEC-DSS time-series data.

    Download DSS Support Document for NWSDSS (PDF File)


    File Size: 23493 bytes
    File Date: Wed Jan 2 13:39:51 2002

    This PDF document describes how NWSDSS extracts precipitation and other meteorological information from the National Weather Service files containing National Climatic Data Center formatted data, and stores the data in a DSS database file.

    Download DSS Support Document for PREAD (PDF File)


    File Size: 71174 bytes
    File Date: Wed Jan 2 13:39:56 2002

    This PDF document describes the PREAD user interface.

    Download DSS Support Document for WATDSS (PDF File)


    File Size: 10281 bytes
    File Date: Wed Jan 2 13:39:59 2002

    This PDF document describes how to use the WATDSS to extract daily flow from a Watstore format 3 file, and store it into a HEC-DSS database file.
  • UNET Documentation

    To download the following technical documents, check the box of the desired documents below and then click the "Download Selected" button. An e-mail will be sent to you with the download links. These documents are available in Adobe Acrobat 4.0 PDF format.

    Download UNET Version 4.0 User's Manual (PDF File)


    File Size: 3911023 bytes
    File Date: Fri Sep 22 12:14:37 2006

    This reference manual provides the complete technical reference documentation for UNET Version 4.0.

    Download UNET Version 3.0 User's Manual (PDF File)


    File Size: 27575336 bytes
    File Date: Fri Sep 22 12:22:15 2006

    This reference manual provides the complete technical reference documentation for UNET Version 3.0.
  • FEMA Technical Documentation

    To download the following FEMA technical documents, check the box of the desired documents below and then click on the "Download Selected" button. An e-mail will be sent to you with the download links. These documents are available in Adobe Acrobat PDF version 4.0 format.

    Download FEMA Flood Insurance Study Guidelines and Specifications (PDF File)


    File Size: 513134 bytes
    File Date: Tue Mar 14 05:40:59 2006

    The Federal Emergency Management Agency (FEMA) has compiled the Flood Insurance Study Guidelines and Specifications for Study Contractors to define technical policy and procedures to be followed in the preparation of FIS, restudies, and LMMP projects. Adherence to these guidelines is required in the Contract Statement of Work. Performance in accordance with these guidelines is required of any contractor preparing a FIS, restudy, or revision unless otherwise specified in the contract.

    Download FEMA Q3 Flood Data User Guide (PDF File)


    File Size: 295927 bytes
    File Date: Fri Sep 22 12:08:47 2006

    This document is intended to provide the user of Q3 Flood Data produced by the Federal Emergency Management Agency (FEMA) with an overview of the data files. Additional information in greater depth may be found in the Q3 Flood Data Specifications document.

    Download FEMA Q3 Flood Data Specifications (PDF File)


    File Size: 319975 bytes
    File Date: Fri Sep 22 12:08:41 2006

    This document is intended to provide the user of Q3 Flood Data with detailed information regarding the contents of the Q3 Flood Data files. An overview of the Q3 Flood Data product maybe found in the Q3 Flood Data User Guide.

    Download FEMA Q3 Flood Data Specifications, draft document, March 1996 (PDF File)


    File Size: 533612 bytes
    File Date: Tue Mar 14 05:48:44 2006

    This document is intended to provide the user of Q3 Flood Data with detailed information regarding the contents of the Q3 Flood Data files. Q3 Flood Data are developed by scanning the existing hardcopy FIRM to create a raster product suitable for viewing or printing and vectorizing a thematic overlay of flood risks. Vector Q3 Flood Data files contain only certain features from the existing hardcopy FIRM.
  • Manning's N Roughness Coefficient Technical Documentation

    To download the following technical documents, check the box of the desired documents below and then click the "Download Selected" button. An e-mail will be sent to you with the download links. These documents are available in Adobe Acrobat 4.0 PDF format.

    Download Manning's Roughness Coefficient Guide #1 (PDF File)


    File Size: 3593796 bytes
    File Date: Fri Sep 22 09:36:11 2006

    This PDF file contains documentation on how to select Manning's Roughness Coefficient. Most hydraulic computations related to indirect estimates of discharge require an evaluation of the roughness characteristics of the channel. This document contains photographs and data for a wide range of channel conditions that can be used to select roughness coefficients for other natural channels.

    Download Manning's Roughness Coefficient Guide #2 (PDF File)


    File Size: 5283414 bytes
    File Date: Fri Sep 22 12:08:34 2006

    Most hydraulic computations related to indirect estimates of discharge require an evaluation of the roughness characteristics of the channel. This document contains photographs and data for a wide range of channel conditions that can be used to select roughness coefficients for other natural channels.

    Download Manning's Roughness Coefficient Guide #3 (PDF File)


    File Size: 6551792 bytes
    File Date: Wed Jul 18 12:28:04 2007

    This PDF file contains documentation on how to select Manning's Roughness Coefficient. This document contains photographs and data for a wide range of channel conditions that can be used to select roughness coefficients for other natural channels.
  • Hydraulic Design Series (HDS)

    To download the following technical documents, check the box of the desired documents below and then click the "Download Selected" button. An e-mail will be sent to you with the download links. These documents are available in Adobe Acrobat 4.0 PDF format.

    Download HDS 1 Documentation (PDF file)


    File Size: 4853209 bytes
    File Date: Sun Apr 27 02:03:50 2003

    This is the HDS 1 document entitled "Hydraulics of Bridge Waterways", March 1978, FHWA EPD-86-101. This document intends to provide a means of determining the effect of a given bridge upon the flow of a stream.

    Download HDS 2 Documentation (PDF file)


    File Size: 9424323 bytes
    File Date: Thu Mar 20 15:15:47 2003

    This is the HDS 2 document entitled "Highway Hydrology", September 1996, Metric version, FHWA SA-96-067. The purpose of this manual is to present some of the principles and techniques of using modern hydrology to obtain functionally acceptable solutions that can form the basis for the design of highway drainage structures.

    Download HDS 2 Documentation (PDF file)


    File Size: 2475792 bytes
    File Date: Fri Sep 22 08:21:43 2006

    This is the HDS 2 document entitled "Peak Rates of Runoff from Small Watersheds", April 1961. This publication reports a research study of peak rates of runoff from small watersheds, and the practical application of the results of that research.

    Download HDS 3 Documentation (PDF file)


    File Size: 11068116 bytes
    File Date: Thu Mar 20 15:27:08 2003

    This is the HDS 3 document entitled "Design Charts for Open-Channel Flow", August 1961, FHWA EPD-86-102. This document contains charts which provide direct solution of the Manning equation for uniform flow in open prismatic channels of various cross sections, instructions for using the charts, a table of recommended values of n in the Manning equation, tables of permissible velocities in earth and vegetated channels, instructions for constructing charts similar to those presented, and a nomograph for use in the solution of the Manning equation.

    Download HDS 4 Documentation (PDF File)


    File Size: 2521447 bytes
    File Date: Fri Sep 22 08:23:27 2006

    This is the HDS 4 document entitled "Design of Roadside Channels", May 1965, FHWA EPD-86-102. Roadside drainage channels perform the vital function of diverting or removing surface water from the highway right-of-way. They should provide the most efficient disposal system consistent with cost, importance of the road, economy of maintenance, and legal requirements. One standard channel win rarely provide the most satisfactory drainage for all sections of a highway, although it might be adequate for most locations. Thus, the design engineer needs procedures for designing various types of channels. This publication discusses flow in roadside drainage channels, estimation of peak discharges from small areas, prevention of channel erosion, and presents methods for the design of drainage channels required to remove runoff from the area immediately adjacent to the highway.

    Download HDS 4 Documentation (PDF File)


    File Size: 4746760 bytes
    File Date: Fri Sep 22 08:27:02 2006

    This is the HDS 4 document entitled "Introduction to Highway Hydraulics", June 1997, Metric Version, HI-97-028. This publication is an update of the 1965 document "Design of Roadside Drainage Channels" that includes discussion of closed conduit facilities and energy dissipators as well as open channel hydraulics.

    Download HDS 4 Documentation (PDF File)


    File Size: 4734409 bytes
    File Date: Fri Sep 22 07:59:15 2006

    This is the HDS 4 document entitled "Introduction to Highway Hydraulics", August 2001, FHWA NHI-01-019. This publication is an update of the 1997 edition and now includes dual units (SI and English).

    Download HDS 5 Documentation (PDF File)


    File Size: 5533871 bytes
    File Date: Tue Mar 14 05:42:38 2006

    This HDS 5 document, "Hydraulic Design of Highway Culverts", September 1985, FHWA IP-85-15, provides comprehensive culvert design material. Culvert design methods are presented for both conventional culverts and culverts with inlet improvements. Storage routing techniques are included which permit the designer to account for ponding effects upstream of the culvert. Unique culvert applications, erosion and sediment control, debris control, structural aspects, and long span culverts are discussed. Inlet control, outlet control, and critical depth design charts, are included for a variety of culvert sizes, and shapes, and materials. Dimensionless culvert design charts are also provided for the design of culverts.

    Download HDS 5 Documentation (PDF File)


    File Size: 13098491 bytes
    File Date: Fri Sep 22 08:35:58 2006

    This is the HDS 5 document, "Hydraulic Design of Highway Culverts", 2000, FHWA IF-00-22.

    Download HDS 5 Documentation (PDF File)


    File Size: 13193641 bytes
    File Date: Fri Sep 22 08:08:30 2006

    This is the HDS 5 document, "Hydraulic Design of Highway Culverts, Second Edition", FHWA NHI-01-020. The second edition corrects minor errors and provides both SI and English units for all equations and design charts.

    Download HDS 6 Documentation (PDF File)


    This HDS 6 document, "River Engineering for Highway Encroachments", December 2001, FHWA NHI-01-004, has proven to be a singularly authoritative document for the design of highway associated hydraulic structures in moveable boundary waterways. The major topics are: sediment transport, natural and human induced causes of waterway response, stream stabilization (bed and banks), hydraulic modeling and computer applications, and countermeasures. Case histories of typical human and natural impacts on waterways are analyzed.
  • Hydraulic Engineering Circulars (HEC)

    To download the following technical documents, check the box of the desired documents below and then click the "Download Selected" button. An e-mail will be sent to you with the download links. These documents are available in Adobe Acrobat 4.0 PDF format.

    Download HEC 1 Documentation (PDF File)


    File Size: 226880 bytes
    File Date: Fri Sep 22 08:36:09 2006

    This HEC 1 document, "Selected Bibliography of Hydraulic and Hydraulic Subjects", FHWA EPD-86-104 is a bibliography compiled to assist highway engineers in securing current and authoritative publications on hydraulic and hydrologic subjects.

    Download HEC-2 Island Split Flow Example (PDF File)


    File Size: 148187 bytes
    File Date: Fri Sep 22 12:11:32 2006

    There are many types of split flow situations that can occur in a river. The following is a list of the more commonly encountered split flow situations:

    1. Split flows caused by islands or high ground dividing the flow.

    2. Split flows caused by levee overtopping.

    3. Split flows caused by watershed divide overtopping.

    4. Split flows caused by diversion structures.

    The HEC-2 split flow option is capable of analyzing all of the above split flow situations except for bifurcation of flow at islands or high ground. In addition, HEC-RAS cannot model any of the above split flow situations.

    This document describes how to model the bifurcation of flow at an island using HEC-2 (or HEC-RAS) and a graphical interpolation method. This interpolation method can be used whenever flow is separated into two or more channels. For example, this method can be used to model divided flow when there are multiple bridge openings at a roadway crossing (when the conveyance is separated among the bridge openings).

    Download HEC 5 Documentation (PDF File)


    File Size: 4823296 bytes
    File Date: Fri Sep 22 08:39:31 2006

    This is the HEC 5 document, "Hydraulic Charts for the Selection of Highway Culverts", FHWA EPD-86-105. Designing highway culverts involves many factors including estimating flood peaks, hydraulic performance, structural adequacy, and overall construction and maintenance costs. This circular contains a brief discussion of the hydraulics of conventional culverts and charts for selecting a culvert size for a given set of conditions, as well as instructions for using the charts.

    Download HEC-6 User Manual (PDF File)


    File Size: 2543253 bytes
    File Date: Fri Sep 22 12:07:01 2006

    This document contains the complete HEC-6 documentation. HEC-6 is a one-dimensional sediment transport model, and can calculate water surface and sediment bed surface profiles in the stream bed and the flowing water-sediment mixture.

    Download Guidelines for the Calibration and Application of HEC-6, Technical Document TD-13 (PDF File)


    File Size: 1349943 bytes
    File Date: Fri Sep 22 12:11:55 2006

    This document contains the guidelines for the calibration and application of HEC-6. This is a supplement to the HEC-6 User Manual. This document has substantial new material since the publication of the HEC-6 User Manual.

    Download HEC 9 Documentation (PDF File)


    File Size: 2141331 bytes
    File Date: Fri Sep 22 08:40:59 2006

    This PDF technical document, "Debris Control Structures", FHWA EPD-86-106, discusses water-borne debris problems and structures used for controlling debris. An accumulation of debris at inlets of highway drainage structures is a frequent cause of unsatisfactory performance or malfunction. This accumulation may result in failure of the drainage structure, or overtopping of the roadway by flood water, or possible damage to the roadway and other property. Consideration of the need for debris-control structures should be an essential part of all hydraulic structure designs. This PDF technical document emphasizes on culverts because their relatively limited waterway area is subject to clogging by retention of debris at the inlet.

    In this PDF technical document a system of classifying the type of debris expected from any drainage basin is followed by a list of types of debris-control structures. The basis for choosing the type of control structure is given and details of design are discussed.

    Download HEC 10 Documentation (PDF File)


    File Size: 3510314 bytes
    File Date: Fri Sep 22 08:43:22 2006

    This is the HEC 10 document "Capacity Charts for the Hydraulic Design of Highway Culverts", FHWA EPD-86-105, November 1972. Since hydraulic capacity is one of the most important factors in the design of a highway culvert, simple methods for making this determination are needed. This circular contains a series of hydraulic capacity charts which permit the direct selection of a culvert size for a particular site without making detailed computations.

    Download HEC 11 Documentation (PDF file)


    File Size: 3713101 bytes
    File Date: Thu Mar 20 15:33:20 2003

    This is the HEC 11 document entitled "Design of Riprap Revetment", Metric Version, FHWA IF-00-022. It includes discussions on recognizing erosion potential, erosion mechanisms, riprap failure modes and riprap types. Design concepts included are: design discharge, flow types, channel geometry, flow resistance, extent of protection, and toe depth. Detailed design guidelines are presented for rock riprap, and design procedures are summarized in charts and examples. Design guidance is also presented for wire-enclosed rock, precast concrete blocks, and concrete paved linings.

    Download HEC 11 Documentation (PDF file)


    File Size: 13537313 bytes
    File Date: Sat Aug 19 03:06:21 2006

    This is the HEC 11 document entitled "Design of Riprap Revetment", March 1989, FHWA IP-89-016.

    Download HEC 12 Documentation (PDF file)


    File Size: 5058591 bytes
    File Date: Fri Sep 22 08:46:45 2006

    This is the HEC 12 document entitled "Drainage of Highway Pavements", FHWA TS-84-202, March 1984. This circular considers the removal of storm water from highway pavement surfaces and median areas. It discusses roadway geometry as it affects pavement drainage, estimation of storm water runoff for inlet design, and flow in curbed gutter sections. It also includes a discussion of types of inlets, factors affecting inlet interception capacity, inlet interception capacity comparisons and design charts. It also discusses median, embankment and bridge inlets, procedures for developing design charts for parabolic roadway sections and for standard inlet configurations and cross slopes.

    Download HEC 13 Documentation (PDF file)


    File Size: 3395858 bytes
    File Date: Fri Sep 22 08:49:04 2006

    This is the HEC 13 document entitled "Hydraulic Design of Improved Inlets for Culverts", FHWA EPD-86-109, August 1972. This document gives a short review of conventional culvert hydraulics, discusses types of improved inlets, and presents design procedures for box and pipe culverts with improved entrances.

    Download HEC 14 Documentation (PDF file)


    File Size: 6719618 bytes
    File Date: Thu Mar 20 15:40:15 2003

    This is the HEC 14 document entitled "Hydraulic Design of Energy Dissipators for Culverts and Channels", September 1983, Metric Version. It provides design information for analyzing dissipation problems at culvert outlets and in open channels. Design chapters cover the general types of dissipaters: Hydraulic Jump, forced hydraulic jump, impact, drop structure, and riprap.

    Download HEC 14 Documentation (PDF file)


    File Size: 25954465 bytes
    File Date: Sat Aug 19 03:16:02 2006

    This is the HEC 14 document entitled "Hydraulic Design of Energy Dissipators for Culverts and Channels", September 1983, FHWA EPD-86-110.

    Download HEC 15 Documentation (PDF file)


    File Size: 2933014 bytes
    File Date: Thu Mar 20 15:43:39 2003

    This is the HEC 15 document entitled "Design of Roadside Channels with Flexible Linings", April 1988, Metric Version. It provides design procedures for several types of flexible linings. Special design procedures are presented for composite channels and channels with steep gradients. The design procedures are based on the concept of maximum permissible tractive force. Methods for determination of hydraulic resistance and permissible shear stress for individual linings are presented. Nomographs are provided for solution of uniform flow conditions in trapezoidal channels and determination of resistance characteristics for vegetation and permissible shear stress for soils.

    Download HEC 15 Documentation (PDF file)


    File Size: 8403407 bytes
    File Date: Sat Aug 19 03:08:38 2006

    This is the HEC 15 document entitled "Design of Roadside Channels with Flexible Linings", April 1988, FHWA IP-87-7.

    Download HEC 16 Documentation (PDF file)


    File Size: 1160415 bytes
    File Date: Fri Sep 22 08:49:52 2006

    This is the HEC 16 document entitled "Addendum to Highways in the River Environment/Hydraulic and Environmental Design Considerations", FHWA EPD-86-116, July 1980.

    Download HEC 17 Documentation (PDF file)


    File Size: 3702281 bytes
    File Date: Thu Mar 20 15:48:05 2003

    This is the HEC 17 document entitled "The Design of Encroachments on Flood Plains using Risk Analysis", April 1981, FHWA EPD-86-112. The purpose of this manual is to provide guidance in the application of the least total expected cost (LTEC) design decision-making process in the design of flood plain encroachments.

    Download HEC 18 Document (PDF File)


    File Size: 26788280 bytes
    File Date: Fri Sep 22 11:30:50 2006

    This HEC 18 document is entitled "Evaluating Scour at Bridges", FHWA NHI 01-001, May 2001, Fourth Edition. This document is provided by the Federal Highway Administration (FHWA) to provide guidance in:

    1. Designing new and replacement bridges to resist scour.

    2. Evaluating existing bridges for vulnerability to scour.

    3. Inspecting bridges for scour.

    4. Providing scour counter-measures.

    5. Improving the state-of-practice of estimating scour at bridges.

    Download HEC 18 Document (PDF File)


    File Size: 3802055 bytes
    File Date: Fri Sep 22 11:31:53 2006

    This HEC 18 document is "Evaluating Scour at Bridges", FHWA IP-90-017, November 1995, Third Edition, Metric Version.

    Download HEC 18 Document (PDF File)


    File Size: 5190334 bytes
    File Date: Fri Sep 22 11:23:26 2006

    This HEC 18 document is "Evaluating Scour at Bridges", FHWA IP-90-017, November 1995, Third Edition.

    Download HEC 18 Document (PDF File)


    File Size: 5231735 bytes
    File Date: Fri Sep 22 08:53:30 2006

    This is the HEC 18 document, "Evaluating Scour at Bridges", FHWA IP-90-017, February 1993.

    Download HEC 19 Document (PDF File)


    File Size: 7731779 bytes
    File Date: Fri Sep 22 08:59:00 2006

    This HEC 19 document is entitled "Hydrology", FHWA IP-84-15, October 1984. By application of the principles and methods of modern hydrology, it is possible to obtain solutions which are functionally acceptable and form the basis for the design of highway drainage structures. This manual presents some of these principles and techniques and explains their uses by illustrative examples. It also discusses basic hydrologic concepts and hydrologic analysis as it relates to the highway stream crossing problem.

    Download HEC 20 Documentation (PDF File)


    File Size: 42831075 bytes
    File Date: Fri Sep 22 11:44:30 2006

    This is the HEC 20 document entitled "Stream Stability at Highway Structures", Third Edition, FHWA NHI 01-002. This document provides guidelines for identifying stream instability problems at highway-stream crossings and for the selection and design of appropriate countermeasures to mitigate potential flood damages to bridges and other highway components at stream crossings.

    Download HEC 20 Documentation (PDF File)


    File Size: 3267610 bytes
    File Date: Fri Sep 22 09:03:32 2006

    This is the HEC 20 document entitled "Stream Stability at Highway Structures", Second Edition, FHWA HI-96-032, November 1995.

    Download HEC 20 Documentation (PDF File)


    File Size: 2996626 bytes
    File Date: Fri Sep 22 09:01:12 2006

    This is the HEC 20 document entitled "Stream Stability at Highway Structures", FHWA IP-90-014, February 1991.

    Download HEC 21 Documentation (PDF File)


    File Size: 2303211 bytes
    File Date: Mon Jan 30 11:00:46 2006

    This is the HEC 21 document entitled "Bridge Deck Drainage Systems", May 1993, FHWA SA-92-010. The objective of this manual is to support sound, economic, and low maintenance design for bridge deck and bridge end drainage facilities. The manual provides guidelines and procedures for designing bridge deck drainage systems, accompanied with illustrative and practical examples.

    Download HEC 22 Document (PDF File)


    File Size: 5868533 bytes
    File Date: Fri Sep 22 08:12:30 2006

    This is the HEC 22 manual entitled, "Urban Drainage Design Manual", FHWA NHI-01-021, August 2001. It provides a comprehensive and practical guide for the design of storm drainage systems associated with transportation facilities. Design guidance is provided for the design of storm drainage systems which collect, convey, and discharge stormwater flowing within and along the highway right-or-way. Methods and procedures are given for the hydraulic design of storm drainage systems. Design methods are presented for evaluating rainfall and runoff magnitude, pavement drainage, gutter flow, inlet design, median and roadside ditch flow, structure design, and storm drain piping. Procedures for the design of retention facilities and stormwater pump stations are also presented, along with a review of urban water quality practices. A summary of related public domain computer programs is also provided.

    Download HEC 22 Document (PDF File)


    File Size: 9079219 bytes
    File Date: Fri Sep 22 09:10:01 2006

    This is the HEC 22 manual entitled, "Urban Drainage Design Manual", FHWA SA-96-078, November 1996, Metric Version.

    Download HEC 22 Document (PDF File)


    File Size: 10653450 bytes
    File Date: Tue Mar 14 05:46:44 2006

    This is the HEC 22 manual entitled, "Urban Drainage Design Manual", FHWA SA-96-078, November 1996.

    Download HEC 23 Documentation (PDF File)


    File Size: 71356307 bytes
    File Date: Fri Sep 22 12:05:50 2006

    This is the HEC 23 document entitled "Bridge Scour and Stream Instability Counter-measures Experience, Selection, and Design Guidance", Second Edition, FHWA NHI 01-003, March 2001. This document identifies bridge scour and stream instability countermeasures that have been instrumented by various SHAs to protect bridges in the United States. It develops a matrix which summarizes countermeasure application and use through the United States and provides design guidelines for several countermeasures which have been applied successfully on a state or regional basis, but for which only limited design references are available.

    Download HEC 23 Documentation (PDF File)


    File Size: 2946998 bytes
    File Date: Fri Sep 22 09:12:07 2006

    This is the HEC 23 document entitled "Bridge Scour and Stream Instability Counter-measures", FHWA HI-97-030, July 1997.
  • Hydraulic Reports

    To download the following technical documents, check the box of the desired documents below and then click the "Download Selected" button. An e-mail will be sent to you with the download links. These documents are available in Adobe Acrobat 4.0 PDF format.

    Download Highways in the River Environment (PDF File)


    File Size: 14353014 bytes
    File Date: Fri Sep 22 09:22:53 2006

    In the United States, the average annual damage related to hydraulic problems at highway facilities on the Federal-aid system is $40 million. Damages by streams can be reduced significantly by considering channel stability. The types of river changes to be carefully considered relate to:

    1. lateral bank erosion
    2. degradation and aggradation of the streambed that continues over a period of years, and
    3. natural short-term fluctuations of streambed elevation that are usually associated with the passage of floods

    This PDF Technical Document will cover many issues on highways in the river environment including: sediment transport, natural manmade causes of waterway responses, stream stabilization (bed and banks), computer applications, and countermeasures. Case histories of typical manmade and natural impacts on waterways are analyzed.

    Download Geosynthetic Design and Construction Guidelines (PDF File)


    File Size: 62104071 bytes
    File Date: Sat Aug 19 03:02:43 2006

    This is the document entitled "Geosynthetic Design and Construction Guidelines", FHWA HI-95-038. This manual was prepared to enable the Highway Engineer to correctly identify and evaluate potential applications of geosynthetics as an alternative to other construction methods and as a means to solve construction problems. With the aid of this text, the Highway Engineer should be able to properly design, select, test, specify, and construct with geotextiles, geocomposite drains, geogrids, and related materials in drainage, sediment control, erosion control, roadway, and embankment on soft soils applications.

    Download Bridge Inspection Document (PDF File)


    File Size: 11143471 bytes
    File Date: Sat Aug 19 02:45:51 2006

    This is the document entitled "Underwater Inspection of Bridges", November 1989, FHWA DP-80-1. The purpose of the manual is to provide guidelines for underwater bridge inspection, acquaint those responsible for bridge safety with underwater inspection techniques, and briefly present methods of repair for commonly found defects.

    Download Bridge Components Evaluation and Repair Document (PDF File)


    File Size: 28186732 bytes
    File Date: Sat Aug 19 02:42:48 2006

    This is the document entitled "Underwater Evaluation and Repair of Bridge Components", FHWA DP-98-1. This document describes a training course covering the topics of the status of bridge inspection programs, mechanisms of underwater deterioration, underwater condition surveys, underwater testing equipment, evaluation of deterioration on structures, and underwater repairs.

    Download Erosion and Sediment Control Document (PDF File)


    File Size: 18270298 bytes
    File Date: Sat Aug 19 02:08:52 2006

    This is the document entitled "Best Management Practices for Erosion and Sediment Control", FHWA FLP-94-005. The purpose of this manual is to provide guidance in preventing erosion and controlling sediment on highway construction projects. It addresses the selection of erosion and sediment control measures and the development of erosion control plans. Construction and inspection of the measures are presented for each practice.

    Download Pumping Station Manual (PDF File)


    File Size: 15073941 bytes
    File Date: Fri Sep 22 09:33:38 2006

    This manual is entitled "Manual for Highway Storm Water Pumping Stations", FHWA IP-82-17, Volumes 1 and 2, October 1982. This manual provides guidelines, criteria and specifications for highway storm water pumping stations. It includes discussion of pumps, motors, engines, electrical systems and construction.

    Download Culvert Inspection Manual (PDF File)


    File Size: 22110421 bytes
    File Date: Thu Nov 16 06:11:24 2006

    This is the document entitled "Culvert Inspection Manual", FHWA IP-86-2. The manual provides procedures for conducting and documenting culvert inspections with specific guidelines for inspecting and evaluating the major hydraulic and structural components of culverts. It also includes discussions on the hydraulic, structural, and durability performance of culverts and information on personnel qualifications, equipment, and safety procedures for conducting culvert inspections.

    Download Inlet and Culvert Structural Design Manual (PDF File)


    File Size: 9866751 bytes
    File Date: Thu Mar 20 16:05:07 2003

    This is the document entitled "Structural Design Manual for Improved Inlets and Culverts", FHWA IP-83-6. This manual provides structural design methods for inlets having specific configurations that improve hydraulic flow in channels. Design methods and typical details for the component structures found in improved inlets, such as wing walls, headwalls, aprons, and the inlet itself, are also presented in this manual.

    Download Bridge Hydraulic Problem Countermeasures Manual (PDF File)


    File Size: 25310248 bytes
    File Date: Sat Aug 19 02:03:47 2006

    This