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Presentations on Stormwater Management
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- Why Watersheds?*: Need to start at the very beginning? The Center's brand-new presentation explains what a watershed is, how development impacts watershed health, and why protecting watersheds is critical. Included are steps that planners, watershed groups, and regular citizens alike can take to protect our own water resources. *Available from CWP on CD-ROM here.
- The Impacts of Urbanization*: The land development process has a documented impact on the quality of our watersheds. This presentation examines some of the effects of land development on aquatic ecosystems with an emphasis on the direct relationship of impervious cover on stream health, in particular, stream hydrology, geomorphology, water quality, and habitat. *Available from CWP on CD-ROM here.
- Introduction to Better Site Design*: One of the best ways to mitigate the impact of land development on watersheds is to control the way that development sites are designed. Better site design is a process by which local governments can review their zoning codes and ordinances to minimize impervious cover and promote conservation of natural areas. This presentation outlines 22 model principles for land development that focus on streets, parking lots, lot design, and conservation of natural areas in new developments. *Available from CWP on CD-ROM here.
- The Eight Tools of Watershed Protection*: This presentation outlines a watershed protection approach that applies eight tools to protect or restore aquatic resources in a subwatershed. It describes the nature and purpose of the eight watershed protection tools, outlines some specific techniques for applying the tools, and highlights some key choices a watershed manager should consider when applying or adapting the tools within a given subwatershed. *Available from CWP on CD-ROM here.
- A Review of Stormwater Treatment Practices*: This presentation is a general review of the many types of practices used to manage and treat urban stormwater. The stormwater treatment practices presented in this presentation fall into five major categories: stormwater ponds, stormwater wetlands, infiltration practices, filtering practices, and open channels. Within each category, there are several design variations. For each practice, a general sequence of slides will be provided including: a schematic, applicability and performance summary, design notes, and one or two representative photographs. *Available from CWP on CD-ROM here.
- The Sizing of Stormwater Treatment Practices*: This slideshow describes a unified approach for sizing stormwater management practices, which addresses groundwater recharge, water quality treatment, channel protection, overbank flooding control, and management of large events. In addition, guidance is provided on how to calculate the storage volumes for each of the proposed criteria. *Available from CWP on CD-ROM here.
- Choosing the Right Stormwater Treatment Practice*: Appropriate stormwater treatment practice selection is based on several factors, including: land use, physical feasibility, climate/regional factors, watershed factors, stormwater management capability, pollutant removal, and community/environmental factors. This presentation outlines a series of matrices that can be used as a screening process for selecting the best STP or group of STPs for a development site. It also provides guidance for locating practices on the site. *Available from CWP on CD-ROM here.
- Design of Stormwater Ponds and Wetlands: This presentation provides general design guidance and performance criteria that apply to the design and construction of stormwater ponds and wetlands. A series of 20 standard features of ponds and wetlands are discussed in detail. It is assumed that the user has some design background and is familiar with general terminology associated with stormwater treatment practices.
- Design of Stormwater Filtering Systems: This slide show presents basic design guidance for stormwater filtering systems, including surface sand filters, perimeter filters, organic filters, underground filters, pocket sand filters, and bioretention. The design criteria are similar for all of the variations of filters. For a more detailed discussion, please refer to the 1996 Center for Watershed Protection publication entitled: "Design of Stormwater Filtering Systems."
- Design of Infiltration Practices: This slide show presents basic design guidance for stormwater infiltration systems, which include infiltration trenches, shallow infiltration basins and porous pavement.
- Design of Open Channels and Filter Strips: This presentation explores the design principles of four different vegetative filter practices. Each of the four practices incorporates the four major design components of: flow regulation, pretreatment, filtering, and overflow. Vegetative practices have been called a whole suite of names in the past. These include, grassy swales, bio swales, filter strips, grass buffers, and grass channels, to name a few. This slide show consolidates many of these past naming conventions and design principles into a unified approach for the design of water quality treatment using vegetative filters. Guidance is also provided on selected material specifications and maintenance elements.
- Stormwater Retrofitting: The Art of Opportunity: In the quest for watershed protection and restoration, watershed professionals are constantly seeking new tools for controlling stormwater runoff and associated adverse impacts. Stormwater retrofits are among the most promising of these tools in urban landscapes where little or no prior stormwater controls existed. This presentation will address what retrofits are and why they are important and outline an 8-step approach to the art of stormwater retrofitting.
- Watershed Education: This slideshow explains why watershed education is critical to the success of watershed management efforts and outlines tips for developing successful education and outreach programs.
- Designing Effective Urban Stream Buffers: This presentation provides a basic review of aquatic buffers for protecting water resources in the urban environment.
- Watershed Protection for Lakes and Reservoirs: This slideshow reviews the impacts of land development on lakes as well as sources of phosphorus loading in lakes and then presents a plan for protecting lakes through a lake protection ordinance and the eight tools of watershed protection.
- Rapid Watershed Planning: Based on our classic Rapid Watershed Handbook: A Comprehensive Guide for Managing Urbanizing Watersheds, this slideshow outlines the key components to a good watershed plan and presents eight steps to preparing a watershed plan.
- Keeping Soil in Its Place: A Presentation on Erosion and Sediment Control: Management of erosion and sediments during the construction process is a critical tool to protect streams and other aquatic resources. This presentation outlines the importance of Erosion and Sediment Control (ESC) and the key elements of an effective construction site ESC plan.
- Tools to Protect Coastal Watersheds: This slide show presents the background and initial research that led us to recognize the need for a watershed planning framework specific to the southeastern and gulf coastal areas.
- Stormwater Management for Cold Climates: Winter conditions in cold climates create ecosystems with distinctly different characteristics than their more moderate or tropical counterparts. This presentation summarizes some of the challenges to effectively managing stormwater runoff and designing stormwater practices in these climates.
- Urban Stream Restoration Practices: This presentation outlines the negative effects that urbanization has on stream channels and summarizes the results of a Center for Watershed Protection study that assessed the effectiveness of a variety of different stream restoration practices, including bank protection practices, grade control practices, flow deflection practices, and bank stabilization practices.
- Delineating Subwatershed Boundaries This presentation outlines the six basic steps to delineating the boundary of a subwatershed.
* These presentations are available on CD-ROM from the Center for Watershed Protection's "Publications to Order" page at www.cwp.org. Watch for other slideshows to be made available later this year.
The Stormwater Slide Shows are descriptive graphic presentations on important aspects of stormwater management with an emphasis on stormwater treatment practices. Since it is important to consider stormwater management within the context of watershed or subwatershed level planning, presentations on the Impacts of Urbanization and the Eight Tools of Watershed Protection have been included to provide a common link between watershed planning and stormwater management practices. In addition, effective watershed planning and stormwater management also means addressing the issue of how growth impacts aquatic resources, so a presentation on Better Site Design has also been incorporated.
It should be noted that this section does not provide a comprehensive coverage of the stormwater management topics found on this website. Instead, the presentations can be used to reinforce some of the subject matter presented elsewhere (particularly within the Manual Builder) and as teaching tools for promoting the design and implementation of effective stormwater management practices.