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• CulvertMaster
  Haestad Methods
  CulvertMaster is a windows based program intended for use in design and analysis of culverts at road-stream crossings. The program uses US Federal Highway Administration Design of Highway Culverts (HDS-5) methodology to perform inlet control and outlet control computations, including pressurized flow conditions and hydraulic jumps. The software can model hydraulics for most commonly used culvert shapes. It allows the user to input the tailwater elevation or it can generate a tailwater rating curve based on a downstream cross-section. Additionally, the user is able to input road surface elevations to check overtopping conditions. CulvertMaster also contains a hydrology module that allows the user the ability to calculate peak design flows using the Rational Method or SCS Graphical Peak Method. It provides tabular and graphical output and can generate reports. The program accepts both English and SI units of measure.
  
• FishXing
  Watershed Continuum Project
  FishXing software and learning systems for the analysis of fish migration through culverts. New version with added features for hydraulic analysis of culverts and expanded biological references anticipated for Spring 2004. FishXing gives detailed profiles of hydraulic conditions and fish performance inside a variety of culvert shapes.
  
• Flow Pro
  ProSoft Apps
  Flow Pro is windows based program that computes steady-state water surface profiles for many prismatic open channel shapes, including circular, rectangular, trapezoidal, triangular, U-shaped, and tubular. It handles both subcritical and supercritical flow types, and flow through weirs, orifices, and underflow gates. Flow Pro also computes many useful flow and channel properties including critical depth and slope, hydraulic radius and wetted perimeter, normal depth, and channel roughness. It uses Manning's equation and numerical integration, and accepts both English and SI units of measure.
  
• HEC-RAS
  Army Corps of Engineers, Hydrologic Engineering Center
  The Hydrologic Engineering Center's River Analysis System (HEC-RAS) is designed to perform one-dimensional hydraulic calculations for a full network of natural and constructed channels. HEC-RAS allows you to perform one-dimensional steady and unsteady flow calculations within a graphical user interface. The steady flow component of the modeling system is intended for calculating water surface profiles for steady gradually varied flow. The system can handle a full network of channels, a dendritic system, or a single river reach. The steady flow component is capable of modeling subcritical, supercritical, and mixed flow regimes water surface profiles. The unsteady flow component was developed primarily for subcritical flow regime calculations.
  
• HY8 Culvert Analysis
  Federal Highway Administration, Hydraulics Engineering Software
  Culvert Analysis automates the design methods described in FHWA publications HDS-5, "Hydraulic Design of Highway Culverts," HEC-14, "Hydraulic Design of Energy Dissipaters for Culverts and Channels," and HEC-19, "Hydrology."