An Integrated Geomorphic, Hydraulic and Ecological Assessment of Dam Decommissioning along the Thames River in London, Ontario

When:
July 16, 2020 @ 12:00 pm – 1:00 pm
2020-07-16T12:00:00-04:00
2020-07-16T13:00:00-04:00
Where:
Online Webinar
Cost:
$15 - $30
Contact:
Victoria Kring

This webinar will review the City of London’s Environmental Assessment to determine the feasibility of implementing various infrastructure projects in conjunction with others, such as potentially decommissioning Springbank Dam.

This webinar is being offered as part of the TRIECA 2020 Webinar Series.

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Presentation Overview:

The Thames River is one of the largest rivers in southern Ontario, and is an important natural, cultural and recreational feature that flows through the City of London.

In 2016, the City initiated an Environmental Assessment to determine the feasibility of implementing various infrastructure projects in conjunction with others, such as potentially decommissioning Springbank Dam.

Springbank Dam has been operating since 1870, providing consistently high water levels for a range of recreational uses. In 2008, one of the newly installed steel gates failed during testing, leaving the dam inoperable. The river has since been free-flowing, allowing more sediment transport and vegetation growth, creating a new upstream aquatic environment. The lower water levels have allowed more than 10 hectares of vegetation to inhabit the floodplain, strengthening the newly formed channel banks.

Study components included the assessment of hydraulics, geomorphology, ecology and fisheries. Field studies included bathymetric surveys, geomorphic assessments, channel substrate characterization, aquatic habitat mapping, fish population studies, and shoreline vegetation studies.

Desktop studies included two-dimensional hydraulic modelling, ecological constraints mapping, and channel morphology evolution mapping.

Hydraulic models were used to support the characterization of existing geomorphic conditions, assess erosion areas, define physical habitat, and assess flooding potential in public access areas.

Learning Objectives:

  • Understand how rivers naturally adjust to dam removal, specifically in urbanized environments.
  • Learn how to develop holistic approaches to stream restoration and natural channel design to balance recreational, economic, environmental, and infrastructure needs.
  • Understand how to use 1D and 2D hydraulic modelling to support erosion and sediment transport to predict channel evolution.

Additional information:

IECA and Landscape Ontario members are eligible for discounts. To register at this discounted price, please contact Victoria Kring at Victoria.Kring@trca.ca and provide your member ID for membership confirmation.

Are you viewing this webinar with a group? You can add additional viewing attendees to your order, provided you are all viewing in the same location. Additional attendees qualify for a reduced registration fee of only $15 per person!

If you have any additional questions, please contact Victoria Kring at Victoria.Kring@trca.ca

TRCA HST Registration number is 10808 8584 RT001

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