New Utility Released (BMD2 Plot) Bug Fix Released

We are excited to announce the release of the BMD2 Plot utility. This is a standalone utility to aid the WASP/EFDC modeler in the calibration process. It provides both qualitative (visual inspection) and quantitative (statistical analysis) of model performance. BMD2 Plot provides publication quality output that can be used in modeling reports and presentations.

A training video on how to use this tool is available on the WASP YouTube channel.
BMD2 Plot Training Video

New Windows Version Released

Version 8.5 Released Date: October 26, 2025

Windows Version is Released Linux/Ubuntu in process of being built MAC OSX in process of being built

Enhancements:

  • Update Hydrodynamic Linkage and dynamic timestep algoriths when linked with EFDC hydrodynamic model.

  • Added additional phytoplankton light growth functions. Eutrophication model now has the following light growth formulations: Steele, Half Saturation, Smith and Jassby-Platt

WASP Workshop

🧪 The USEPA WASP Workshop is a hands-on training event focused on the Water Quality Analysis Simulation Program (WASP), designed for environmental professionals working with water quality modeling.

📅 Next Scheduled Workshop

  • Dates: July/August 2026

  • Location: Martin Luther King Building, Atlanta, GA

  • Format: In-person only

  • Capacity: Approximately 40 participants

  • Sponsors: US EPA Region 4 and the National Water

  • Modeling Workgroup

  • Contact for Registration: Catherine York (York.Catherine@epa.gov)

📘 Workshop Content Highlights Participants will explore:

  • WASP model setup and segmentation (CSTR, 1D/2D river systems)

  • Transport schemes and hydrodynamic linkages

  • Eutrophication modeling and nutrient cycling

  • Calibration techniques and visualization tools

  • TMDL development and toxicant modeling

  • Real-world case studies and scenario analysis

📂 Workshop Materials

EPA provides:

  • PowerPoint lectures

  • Example datasets (e.g., TMDL scenarios)

  • Utility programs

  • Fact sheets and documentation

📨 General Inquiries

For questions about WASP or the workshop, you can also reach out to Catherine York at York.Catherine@epa.gov.

WASP Tutorials

WASP's YouTube channel is a niche gem for anyone interested in water quality modeling and environmental simulation tools. With over 15 videos and nearly 600 subscribers, the channel dives deep into technical topics like:

🧪 WASP Tutorials: Including command-line usage, model calibration with WRDB Graph, and introductory webinars.

📊 Data Visualization: Workshops and webinars on visualizing model results and using open-source scripts.

🌎 Modeling Applications: Presentations on data needs for watershed modeling and EPA-supported tools.

You can explore the channel on YouTube. If you’re working with WASP or similar tools, it’s a solid resource for practical insights and walkthroughs. Want help summarizing one of his videos or integrating a technique into your own modeling workflow

WASP Google Group

The User Support site has established a Google Group Email to facilitate discussion, model support and sharing ideas and modeling approaches. Use the link below to access the Google Email Group.

Join Google Group Email