Additional details:
In this webinar we’ll start by diving into hydromodification, its root causes (e.g., land alteration, etc.), key factors affecting stream stability, and potential hydrologic and geomorphic outcomes. Building on this foundation, Goodman will lay out a step-by-step approach for predicting and mitigating hydromodification impacts by accounting for changes to the dominant controls on channel form (e.g., discharge and sediment supply) as well as the form itself (e.g., channel geometry and bed / bank material). Within this methodology, we’ll discuss how you can properly characterize the four key factors controlling channel adjustment for both the pre- and post-disturbance condition, and how you can incorporate these characterizations as inputs to a long-term continuous sediment transport model. Using this model, Goodman will demonstrate how you can predict the likelihood of channel form adjustment based on the ratio of sediment transport capacity and sediment supply in the pre- and post-disturbance conditions.
We’ll then move to mitigation, taking a look at how you can use stormwater BMPs and stream rehabilitation to manage hydromodification and mitigate its impacts (channel erosion, stream degradation, biologic impact, etc.). Goodman will present real-world examples of hydromodification management that have positively impacted water supply, quality, habitat, and public safety, and how you can utilize these techniques for your projects. And finally, we’ll bring into context how these technical principles align with and meet current stormwater regulations.
Learning Objectives
Attendees can expect the discussion and education of the following learning objectives.
- Learn what hydromodification is and why it is important to manage.
- Understand the four key factors that affect stream stability.
- Learn about a modeling strategy used to predict hydromodification impacts.
- Understand how stormwater BMPs and stream rehabilitation can be employed to manage hydromodification.
Date & Time:
Thursday, Sept. 10th @ 11:00am PDT / 2:00pm EDT
Presenter:
Judd Goodman, P.E.
Senior Water Resources Engineer
Geosyntec Consultants
Credits: 1 PDH / 0.1 CEU
Cost: $79