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Make Sense of the Data: Analysis of Stormwater Treatment Monitoring


How you can translate a complex spreadsheet of stormwater monitoring data into a clear picture of efficiency?

Monitoring the response of a treatment practice to storm events often results in a plethora of data that can be confusing, contradictory, and even intimidating. To make matters worse, most stormwater performance reports plot removal efficiency and event mean concentrations, but these values alone may not represent the full performance spectrum for a treatment practice.

Join returning speaker Andrew Erickson, Ph.D., P.E., to examine the types of data often collected during stormwater monitoring programs, various metrics for calculating treatment performance, and how to translate a bursting spreadsheet of data into a clear and useful analysis.

In this online training webinar, Erickson will present and validate the most effective and accurate way to calculate common metrics such as removal efficiency and event mean concentrations, as well as provide guidance on calculating runoff volume reductions, flow-weighted averages, and pollutant load reductions. Within this discussion, we’ll evaluate the difference between storm-to-storm comparisons, year-to-year comparisons, and even site-to-site comparisons. Next, we’ll jump into how you can calculate uncertainty to provide a clear representation of the variability often found in monitoring data. Finally, Erickson will demonstrate graphical methods to illustrate performance that incorporate data from all qualifying storm events AND make your summary reports stand out. These graphical methods will allow stormwater managers to identify trends among small storms, medium storms, and large or extreme events to determine which events have the most impact on their water quality.

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

  • List and describe the types of stormwater monitoring data typically collected, including rainfall, flow data, and water quality data.
  • Explain the differences between event mean concentration and load reduction performance metrics.
  • Evaluate methods for comparing the difference in performance between different storm sizes, different years, or different sites.
  • Apply graphical methods to illustrate treatment performance using monitoring data.
  • Calculate uncertainty in treatment performance from stormwater monitoring data.

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. Presentation may exceed scheduled time.
* Each state and certification agency has different requirements; it is your responsibility to know what they are. Note that 1 PDH = 0.1 CEU.
* Purchase of this course allows you access to the presentation(s) for 6 months from the order date.

On-Demand Webcast
Lectures: 1
Session: 1 H 30 M
Credits: 1 PDH / 0.1 CEU

On-Demand Webcasts > Stormwater ($79.00)


Special Group Pricing Available


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