Talk by Dr. Karen Prestegaard on "Limitations of Regenerative Stormwater Conveyances"
Talk by Dr. Karen Prestegaard on "Limitations of Regenerative Stormwater Conveyances," which are proposed for installation in GHI Woodlands - Jan 10, 2023 at 5:00pm
The fifth meeting of the Woodlands Committee’s Stream Study Group is scheduled for January 10th, 5pm. This study group has been meeting to support the Woodlands Committee and Storm Water Management Subcommittee to carry out a motion passed at the October 20, 2022, meeting of GHI’s Board of Directors. The motion directed “the Storm Water Management Subcommittee and Woodlands Committee to review the Storm Water Mitigation Proposal from Technical Services staff and the issues that the Woodlands Committee has raised and to recommend the next steps that should be taken.” The proposal mentioned in the motion is to install Regenerative Stormwater Conveyance (RSC) systems in five stream channels in the GHI Woodlands. These five streams are tributaries of Canyon Creek, located between Laurel Hill Road, Ridge Road, and Plateau Place. More information about this proposal is available on pdf pages 2 to 3 and 27 to 35 in the Board Meeting Packet from the October 20th Board Meeting at https://www.ghi.coop/sites/default/files/221020%20GHI%20Open%20Meeting%20Packet.pdf
Our January 10th meeting will feature a presentation on “Limitations of Regenerative Stream Conveyance (RSC) structures for storm runoff and water quality mitigation” by Dr. Karen Prestegaard. Dr. Prestegaard has been a faculty member of the Department of Geology at the University of Maryland, College Park, for the past 30 years. She conducts research on watershed hydrology, wetland hydrology, stream morphology, sediment transport in rivers, and the effectiveness of stream restoration projects. Dr. Prestegaard supplied the following abstract of her presentation:
Urbanization and other land-use changes that affect soil infiltration rates contribute to headward erosion and channel incision, particularly of headwater streams. Stream restoration projects, such as Regenerative Stream Conveyance structures (RSCs), are designed to lower stream velocity, stop channel erosion, and provide localized infiltration capacity and storage. They are effective in locations where channel erosion is a main problem and where a significant amount of the runoff that contributed to the site can be temporarily stored in the pools or in the groundwater.
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