Overview
HEC-HMS (Hydrologic Modeling System) is designed to simulate the complete hydrologic processes of dendritic watershed systems. This is essential the the CWMS software suite, as it fundamentally transforms precipitation and snowmelt into flow for USACE watersheds. This in turn is one of the first pieces of software used in the CWMS suite and feeds information needed for HEC-ResSim and HEC-RAS.
Accomplishments
The team released HEC-HMS 4.11 in FY23, which is the biggest release to date in terms of new features and bug fixes. Some of the new features and enhancements include:
- Development of new GIS parameter estimation tools, especially for gridded modeling methods
- Improvements to snow modeling methods that simplify setting the initial conditions for the snowpack
- Improvements to visualization of gridded meteorologic data and computed results
- Improved data management of terrain and other gridded datasets
- Additional work to improve simulation runtimes
The team developed additional documentation and tutorials throughout the year to help inform users about some of the new features and improvements that were released this year. They also provided technical assistance to modelers on an as-needed basis, ranging from general modeling support to bug fixes to the quick turn-around of new feature development.
Field Support and Technology Transfer
- Monthly working sessions on Microsoft Teams
- Working with Terrains in HEC-HMS webinar
- General HEC-HMS Quarterly Webinars
- Hydrologic Modeling with HEC-HMS PROSPECT Course
- Advanced Applications of HEC-HMS PROSPECT Course