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HSPF Hydrology Webinar Series - 2021


While continuous simulation has been around for decades and is accepted as the future of stormwater modeling, our engineering practices and choice of modeling tools have been anything but standardized. With all the models out there today, what’s the most accurate way to do continuous simulation? Using the EPA’s Hydrological Simulation Program – Fortran (HSPF), everything from a single acre (and smaller) to an entire watershed can be modeled.

Join prolific speaker and stormwater modeling pioneer Doug Beyerlein (PE, PH, D.WRE) for this comprehensive, four-part webinar series exploring how to model stormwater using the most advanced and accurate methods with HSPF hydrology. Specifically, we’ll examine how HSPF computes and routes runoff components (surface runoff, interflow, and groundwater) through a variety of stormwater facilities and open channel systems.

Focusing on HSPF model theory, algorithms, input parameters, and appropriate parameter values, we’ll discuss how you can effectively set up and calibrate an HSPF model, deal with meteorological time series inputs, generate appropriate output, and solve stormwater problems.

Read brief course descriptions below, follow the links to learn more, and register today—a la carte or for the entire series. All sessions become available on-demand within 24 hours of airing live, so it’s never too late to save 20% and earn 4 PDH / 0.4 CEU with this full-series bundle!

Talk the Talk! Introduction to HSPF Continuous Simulation

1 PDH / 0.1 CEU
Get introduced to continuous simulation hydrology and the different modules and options available in HSPF.



1 PDH / 0.1 CEU
Examine the PERLND, IMPLND, and RCHRES modules used to simulate streamflow; the differences in PERLND and IMPLND algorithms, input parameters, and appropriate parameter values; and how to route streamflow through a conveyance system using RCHRES.


Do We Have To? HSPF Calibration and Validation

1 PDH / 0.1 CEU
Explore and compare calibration parameters, the statistical tests and measures used to evaluate a calibration and/or validation, and when (and when not) to calibrate HSPF parameter values.


Finally! Solving Stormwater Problems with HSPF Modeling

1 PDH / 0.1 CEU
Thoroughly examine how HSPF can be used to solve stormwater problems.


Learning Objectives
Attendees can expect the discussion and education of the following learning objectives.

  • Learn how continuous simulation hydrology is fundamentally different than single-event methods.
  • Learn the importance of time series data in hydrologic modeling calculations.
  • Learn how the 17 HSPF hydrologic parameters work to represent different aspects of the hydrologic cycle and the computation of different runoff components.
  • Learn how to calibrate an HSPF model to represent local conditions.
  • Learn how to use the HSPF input and output to solve stormwater problems.

Train Your Team
Get the whole team trained! We offer additional savings if you register as a group. For group pricing information, contact us at

* Presentations are scheduled for approximately one hour with a 15-20 minute question and answer session to follow. Presentations may exceed scheduled time. * Each state and certification agency have different requirements; it is your responsibility to know what they are. Note that 1 PDH = 0.1 CEU. * Purchase of this bundle allows you access to the presentations for 6 months from the order date.

On-Demand Webcast Series
Each Session: 1 H 30 M
Lectures: 4
Credits: 4 PDH / 0.4 CEU

Master Classes > Webcast > Stormwater ($250.00)


Special Group Pricing Available


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