A Watershed Modeling Tool, HEC-WAT

For the past few years, the U.S. Army Corps of Engineers' Institute for Water Resources, Hydrologic Engineering Center (CEIWR-HEC) has been developing the Watershed Analysis Tool (HEC-WAT). This software was created to help Project Delivery Teams (PDT's) conduct watershed and water resources studies in an integrated, comprehensive and systems based analyses. The degree of coordination across disciplines, offices and agencies, for these complex studies is often difficult to complete. The PDT must come to a consensus on the definition of the problems, issues, and opportunities and continue with the definition of the various models, events and analyses to determine impacts so that appropriate decisions may be made. This paper will discuss the development, features and capabilities of HEC-WAT and will also document several applications. In addition, a new feature will be discussed that will eventually allow HEC-WAT to run a Monte Carlo analyses so that a robust risk analysis can be performed.