To download the following HEC-2 reference manuals, check the box of the desired documents 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 PDF version 4.0 format.

Download HEC-2 User Manual (PDF File)

Download HEC-2 User Manual (PDF File)

File Size: 1475690 bytes
File Date: Fri Sep 22 12:06:16 2006

This manual documents Version 4.6 of HEC-2, released February 1991. Appendices provide sample applications, floodway options, bridge and culvert analysis. Input, output, and special notes are also presented in the Appendices.

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 Guide for Selecting Manning's Roughness Coefficients (PDF File)

Download Guide for Selecting Manning's Roughness Coefficients (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 (PDF File)

Download Manning's Roughness Coefficient Guide (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.