Proposed Activities

Some of the proposed activities in FY24 include a variety of software enhancements. The automated optimization of forecast alternatives could help districts streamline forecast runs. Improvements to the Save As functionality would prevent copying of unnecessary files (terrain, DSS data, other files) which would save space and time in the long run. Proposed work includes a streamlined workflow to define parameters with the Expression Calculator using SNODAS, SMAP, and NLDAS data. Other enhancements include integrating the SnoPac parameter estimation tool into HEC-HMS. 

Field support and bug fixes will also be supported throughout FY24. The development of new tutorials and webinar materials is also supported by this funding.

The team will provide support for a Snowmelt Modeling Working Session in December 2023 at HEC. 

Enhancements to the cloud compute capabilities of HEC-HMS will also be investigated in FY24.


ActivityFunded (Y/N)Cost
Snowmelt Modeling Working SessionY$30,000 (HEC labor)
Technology Transfer - New Tutorials and Webinars Y$25,000 (HEC labor)
Testing HEC-HMS 4.12 and 4.13 in the CAVI (CWMS 3.4.0)Y$50,000 (HEC labor)
Technology Transfer - Field SupportY$25,000 (HEC labor)
Fix BugsY$25,000 (HEC labor)
Automate Optimization for Forecast Alternatives (CWMS 3.4.0)Y$200,000 (HEC labor)
Improvements for Save As Functionality (CWMS 3.4.0)Y$15,000 (HEC labor)
Streamline Workflow to Define Parameters with Expression Calculator (CWMS 3.4.0)Y$146,000 (HEC labor)
Cloud Compute Enhancements (HEC-HMS API) (CWMS 3.5.0)Y$60,000 (HEC labor)
Integrate SnoPac parameter estimation tool into HEC-HMSY$60,000 (HEC labor)
Ensemble GenerationY$145,000 (HEC labor)