We have not yet developed this page to include Minnesota-specific case studies. We anticipate doing this at some point. For now, we have included some case studies for locations outside Minnesota, including brief summaries.

Gene Green Beltway 8 Park - Houston, Texas

A project incorporating bioswales into a local park located east of downtown Houston, Texas. The document describing the project provides a summary of the project, including design, expected pollutant removal, LEED features. Includes detail drawings; soil mixes used; information on underdrains, curbs, and inlets; plant materials; landscaping; maintenance; cost information; photos and schematics. Source: Houston Land Water Sustainability Forum.

North Carolina

This PowerPoint presentation, Low Impact Development in the Transportation Environment: Lessons Learned in North Carolina (Winston, 2014), summarizes several case studies utilizing swales. The focus is on different design options and features and their effect on swale performance. Includes some design information, performance results, and numerous photos, schematics, and other images.

Springfield, Oregon

Three bioswales were constructed at the Lane Transit District (LTD) Springfield Station, Springfield, Oregon. Two swales function as major elements and one as a minor element. This case study provides a minimum of information on design but provides a summary of monitoring conducted at the site. Link.

Oregon Department of Environmental Quality

Biofilters For Stormwater Discharge Pollution Removal - Excerpt from this document: "This document is an attempt to compile the best available information on the design and use of biofilters (bioswales, vegetated filter strips, and constructed wetlands) so that those sites that may have an application of one or the other of these vegetated filtering systems will have information to make the best decision on the design, construction, implementation, and maintenance of these Best Management Practices. It is not a design manual but a practical, based on experience and knowledge of sites that implemented these BMPs, useful information on what works and does not work when designing, constructing, and operating them."