Online training
Nov 22 - 23, 2022

Watershed planning is a broadly scoped, multi-disciplinary topic that attempts to minimize the impacts of development on receiving waters. Modeling is needed to support many aspects of watershed planning including the design, hydraulic performance assessment, and optimization of stormwater management operations/facilities. Watershed modeling is intended to manage stormwater over a larger scale and from a different perspective than individual site development; that is, it is concerned with the cumulative impacts on downstream waterbodies and watercourses, due to modifications to natural, undeveloped hydrologic/hydraulic conditions throughout the watershed.

This specialized PCSWMM and EPA SWMM5 workshop focuses on getting both new and experienced modelers familiarized with the processes and considerations essential for watershed model development within PCSWMM at both the watershed and subwatershed scales. An overview of the watershed planning process will be given, followed by a detailed review of the multiple design and operational objectives implicit in watershed planning. These concepts will be reinforced using a series of hands-on exercises.

Lectures include:

  • Overview of EPA SWMM / PCSWMM
  • SWMM5 Hydrology & Hydraulics Refresher
  • Advanced Hydrology for Watershed Modeling: Comparison of event-based hydrology vs. continuous simulation; Development and application of Hydrologic Response Units (HRUs); Overview of climate change and system resilience; Representation of groundwater baseflow contributions
  • Advanced Hydraulics for Watershed Modeling: Hydraulic performance metrics using design storm events and continuous simulation; Overview of design/analysis approaches to quantifying level of service; Urban flooding analysis and model considerations in coastal areas
  • Watershed Delineation, Planning, and Modeling: Automated Model parameterization for watershed modeling; Overview of watershed planning; Building and calibrating watershed models using open-access, online databases; Creating submodels (e.g., subwatershed models or development sites); Methodologies and case studies for analyzing impacts due to development

Exercises include:

  • Conducting a local rainfall/runoff analysis for a range of HRUs
  • Building a watershed model using open-access, online data resources
  • Creating a subwatershed model
  • Evaluating hydraulic performance under existing conditions
  • Updating a model to representing proposed site development
  • Evaluating hydraulic performance of proposed site servicing alternatives

You will receive full workshop details with the course login details, prior to the workshop. If you have any questions or comments, please contact our workshop coordinator.


All levels


2-day: 1.5 CEUs
1-day: 0.75 CEUs




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Student Discount

As a full-time student, I qualify for the 30% discount.

Cancellation Policy

Cancellations prior to 14 calendar days before the workshop will be refunded in full. Cancellations received within 14 days but prior to 7 calendar days before the workshop will forfeit 50% of the registration fee. Cancellations received less than 7 days before the workshop will not be refunded; however, registrants will be eligible for a 50% credit towards any future workshop.

CHI retains the right to cancel the workshop. If the workshop is canceled registrants will receive a full refund of the registration fee. CHI will not be liable for any other expenses occurred by the registrant. Normally, cancellation will not occur within 7 days of the date of the workshop.

If you have any questions, please email info@chiwater.com, or call us at 1-519-767-0197 or 1-888-972-7966.