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Modeling the Effectiveness of “Green BMPs” in Stormwater Quantity and Quality - Jennifer Gulick
Published: 1/9/2005
2004 Southeast Watershed Roundtable Presentaion Click here for full agenda
The Davey Resource Group and the Sanitation District No. 1 of Northern Kentucky jointly developed an educational tool to promote environmentally sensitive planning and to demonstrate how “green” best management practices (BMPs) can be incorporated into site design with the purpose of improving regional stormwater management. The objective of this project was to develop a scientifically based model to predict the quality and quantity of stormwater runoff on residential, commercial, and industrial development sites. The model and computerized visualizations are used to demonstrate the effectiveness of “green” BMPs and appropriate land use planning on site-specific levels and a watershed level where urban growth is projected to occur. This project produced a scientifically based, highly educational stormwater computer model. The interactive, user-friendly model and the graphic visualizations are available for users over the Internet and on CD-ROM. Instructions on how to use the model and links to technical fact sheets on various BMPs are included. This educational tool is appropriate for engineers and stormwater managers as well as urban foresters, government representatives, elected officials, planners, developers, and the public. This project was partially funded by a grant from the U. S. Forest Service’s National Urban and Community Forestry Advisory Council and has broad regional applicability. Evaluating Low Impact Development Practices for Storm Water Management on an Industrial Site in Mississippi - Joel Haden and Doug Baughman Industrial site development can impact water resources. While permitting requirements may reduce impacts, they are limited in addressing long-term cumulative and operational impacts from the changes in land uses. Many of these developments occur within watersheds containing impaired waters. Approximately 25,000 acres of industrial sites are developed or expanded annually in the 201-county Tennessee Valley Authority (TVA) power service region. TVA’s mission is to promote sustainable economic development, energy production, and environmental stewardship. The Golden Triangle Regional Airport Authority is developing an industrial site for American Eurocopter on an airport near Columbus, Mississippi. For the 90-acre site, TVA is evaluating Low Impact Development (LID) practices that reduce flow and water quality, and control storm water at its source rather than in large high-flow concrete structures. LID relies largely on landscape and vegetation, which can be incorporated with other natural resource watershed enhancement activities into a comprehensive protection strategy. This approach was applied originally to new construction of residential areas, strip malls, or office parks. The primary objective for this project was to determine the most suitable suite of best practices to minimize the proposed industrial development’s potential storm water impacts. This paper presents methodologies used to conduct storm water evaluations at the site, including hydrologic modeling, conceptual designs and cost evaluations. Hydrologic modeling was accomplished using the LIFE™ model, developed by CH2M HILL to simulate LID hydrology. The LIFE™ model is a continuous-simulation, physically-based model that takes into account the processes that occur in various LID best practices.
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