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  Innovative Approaches for Urban Watershed Wet-Weather Flow Management and Control:
State-of-the-Technology INTERIM REPORT
(EPA/600/R-09/128) August 2009


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This report documents initial efforts to identify innovative strategies for managing the effects of wet-weather flow in an urban setting. It served as a communication tool and a starting point for discussion with experts. As such, the document is a compilation of literature reviews from prior work and of content based on interviews with experts, but stops short of a definitive final analysis. Investigations of wet-weather flow treatment approaches through source control (and treatment at the source) make up its setting. Innovative systems that treat stormwater as a beneficial resource through reclamation and reuse are also explored. The effort focused on practices and technologies that can be implemented at the urban watershed management and infrastructure interface to combine cost-effective, integrated solutions. The result is a document containing urban watershed wet-weather flow management and control approaches from a national and international perspective.

Specific tasks included a global information search to identify wet-weather flow management approaches that represent the current state-of-the-technology. The topics were subjected to review by international experts who provided comment and feedback. This document is targeted for the user community of regulators, academics, consultants, and municipalities investigating options to control the high costs of water, wastewater, and stormwater management and treatment. Case examples are included along with conclusions and recommendations to guide future research, development, and demonstration initiatives.


Richard Field

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