Research Needs in Urban Wet Weather Flows

Abstract

The results of a national assessment of research needs in urban wet weather flow management are presented. Three interrelated categories of urban wet weather flow management are discussed: combined sewer overflows, sanitary sewer overflows, and urban stonnwater discharges. The initial compilation of wet weather flow research needs totaled 154 research projects, which was later reduced to 69 higher-priority research projects for which detailed literature reviews were compiled. From this group, 26 topics were selected as priority research topics. Within this paper, the results of the assessment were organized into the following ten categories: (I) sources and monitoring;(2) receiving water effects; (3) other effects; (4) management; (5) models and decision support systems; (6) watershed management linkages; (7) regulatory policies and financial aspects; (8) source controls; (9) collection system controls; and (10) storage/treatment systems. A summary of the authors' views on research needs within each category is provided. An expenditure of an estimated $20 to $40 million per year in the U.S. is needed to address the identified research needs. Water Environ. Re.'" 7],241 (1999),

Performance Evaluation of a Full‐Scale Constructed Wetland for Treating Stormwater Runoff

“…Rapid proliferation of urban sprawl can cause impervious surfaces that often alter the hydrological flow regime, resulting in an increase in the rate and volume of stormwater runoff . In addition to its highly unsteady inflows, stormwater runoff has been identified as one of the largest sources of water pollution, contributing substantially to a variety of constituents to receiving water .…”

“…Rapid proliferation of urban sprawl can cause impervious surfaces that often alter the hydrological flow regime, resulting in an increase in the rate and volume of stormwater runoff. [1,2] In addition to its highly unsteady inflows, stormwater runoff has been identified as one of the largest sources of water pollution, contributing substantially to a variety of constituents to receiving water. [3] Significant increase in urban stormwater runoff can therefore cause adverse impacts on receiving aquatic environment, resulting in direct pollution of receiving water and impairment of water treatment processes.…”

Impacts des rejets urbains de temps de pluie (RUTP) sur les milieux aquatiques : État des connaissances

“…Ainsi, les connaissances concernant la toxicité ou les impacts des RUTP sur les écosystèmes récepteurs restent à conforter (FIELD et al. 1998;HEANEY et al, 1999;NIEMCZYNOWICZ, 1999). L'évaluation pertinente de la contamination d'un écosystème étant complexe, une approche intégrée, ou holistique, est préconisée (BURTON, 1999;ELLIS, 2000;ELLIS et HVITVED-JACOBSEN, 1996;KOMINKOVÁ et al, 2005).…”

Pollution Trading in Water Quality Limited Areas: Use of Benefits Assessment and Cost-Effective Trading Ratios

“…In addition to presenting a trading program design in Section 2, this paper applies the trading approach to the regulation of CSOs in the Upper Ohio River Basin (UORB), a substantive problem that is expected to involve costs of over three billion dollars over the next 20 years. The application is also responsive to a recent national assessment of research needs in urban wet weather flow management that identified 69 priority research needs including flexible regulatory approaches (Heaney, Wright, and Sample 1999). In Section 3, trading ratios are calculated for the largest sources in the UORB, illustrative cost savings from trading are presented, and complexities relating to practical implementation are considered.…”