Please contact the district floodplain engineer or transportation engineer if you have questions about Hydraulic Programs and Report Guidelines.  Please consult with your district floodplain engineer prior to submittal if you are proposing to use any model other than the current version of HEC-RAS in a 1D, steady-state model. 

Computer programs and E-quests:

• HEC-RAS (current version)
• HY-8, (current version): HY-8 is a program that automates the design methods described in the Hydraulic Design Series No. 5, "Hydraulic Design of Highway Culverts", FHWA-ID-85-15; HEC No. 14, "Hydraulic Design of Energy Dissipators for Culverts and Channels"; and HEC No. 19, "Hydrology", FHWA-IP-84-15. These publications are available from the Government Printing Office, Washington, DC 20402. The HY-8 software is a self-extracting binary file that has been structured to be self-contained and requires no user manual. 

Download instructions: Create a folder in the C: drive called HY8 then download the file to this folder. When the file has transferred, double click on the file "hy8-v61m.exe" to decompress the file. Once the files are extracted, double click on "setup.exe" and follow the directions. This step will tell the program where to look for your files. When the setup is complete, double click on "Hy8.exe" to run the program.

Applications and Preliminary Review forms: 

• Permit Application 
• Voluntary Preliminary Review Instructions and Form 

Hydraulic Report Guidelines 

Hydraulic Capacity Certification template - new or replacement crossing