scholarly journals Culex Mosquitoes at Stormwater Control Measures and Combined Sewer Overflow Outfalls after Heavy Rainfall

Water ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 31
Author(s):  
Alisha Yee Chan ◽  
Honghyok Kim ◽  
Michelle L. Bell
Keyword(s):  
Stormwater Management ◽  
Heavy Rainfall ◽  
Control Measures ◽  
Culex Mosquito ◽  
Combined Sewer Overflows ◽  
Culex Mosquitoes ◽  
Combined Sewer ◽  
Ecologically Sustainable ◽  
Stormwater Control Measures ◽  
Stormwater Control

Mosquito borne diseases are increasingly problematic as climate change continues to alter patterns of precipitation, flooding, and temperatures that may favor mosquito habitats. Stormwater control measures (SCMs), ecologically sustainable methods of stormwater management, may have varying impacts on Culex mosquitoes, such as in areas with combined sewer overflows (CSOs). We studied spatial and temporal associations of SCMs and Culex mosquito counts surrounding the SCMs, stratifying our examination amongst those that do/do not use pooling and/or vegetation, as well as surrounding CSO outfalls after heavy rainfall (≥95th percentile) during summer 2018. Results indicate Culex mosquito counts after heavy rainfall were not significantly different at SCMs that use vegetation and/or ponding from at those that do not. We also found a 35.5% reduction in the increase of Culex mosquitoes the day of, and 77.0% reduction 7–8 days after, heavy rainfall at CSO outfalls treated with medium SCM density compared to those without SCMs. Our results suggest that SCMs may be associated with a reduction in the increase of Culex mosquitoes at the CSO outfalls after heavy rainfall. More research is needed to study how the impacts of SCMs on mosquito populations may affect human health.

scholarly journals Efficiency of stormwater control measures for combined sewer retrofitting under varying rain conditions: Quantifying the Three Points Approach (3PA)

2016 ◽  
Vol 63 ◽  
pp. 19-26 ◽  
Author(s):  
Hjalte Jomo Danielsen Sørup ◽  
Sara Maria Lerer ◽  
Karsten Arnbjerg-Nielsen ◽  
Peter Steen Mikkelsen ◽  
Martin Rygaard
Keyword(s):  
Control Measures ◽  
Combined Sewer ◽  
Stormwater Control Measures ◽  
Stormwater Control

scholarly journals Comment on “Suburban watershed nitrogen retention: Estimating the effectiveness of stormwater management structures” by Koch et al. (Elem Sci Anth 3:000063, July 2015)

Elem Sci Anth ◽  
2015 ◽  
Vol 3 ◽  
Author(s):  
Christopher J. Walsh
Keyword(s):  
Coastal Plain ◽  
Stormwater Management ◽  
Nitrogen Retention ◽  
Control Measures ◽  
Recent Analysis ◽  
Nitrogen Export ◽  
Order Of Magnitude ◽  
Urban Catchments ◽  
Stormwater Control Measures ◽  
Stormwater Control

Abstract I reassess a recent analysis of uncertainty in estimates of nitrogen export from stormwater control measures, using structured expert judgment, which concluded that nitrogen export from a watershed in the Piedmont physiographic province of the Chesapeake Bay basin was an order of magnitude greater than from a watershed in the adjacent the Coastal Plain province. Re-analysis of expert responses suggests that hydrographic measurement error is a likely large source of uncertainty in N export from one of the watersheds. Mass-balance estimates of impervious runoff into stormwater drainage systems suggest that nitrogen export from the Coastal Plain watershed is an order of magnitude larger than estimated. This analysis highlights the importance of stormwater drainage infrastructure in driving the hydrology of streams in urban catchments by quarantining impervious runoff from watershed soils.

Implementation of Hamilton-Wentworth Region’s Pollution Control Plan

1996 ◽  
Vol 31 (3) ◽  
pp. 453-472 ◽  
Author(s):  
M. Stirrup
Keyword(s):  
Wastewater Treatment ◽  
Pollution Control ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Control Measures ◽  
Storm Events ◽  
Combined Sewer Overflows ◽  
Control Plan ◽  
Combined Sewer ◽  
Sewer Overflows

Abstract The Regional Municipality of Hamilton-Wentworth operates a large combined sewer system which diverts excess combined sewage to local receiving waters at over 20 locations. On average, there are approximately 23 combined sewer overflows per year, per outfall. The region’s Pollution Control Plan, adopted by Regional Council in 1992, concluded that the only reasonable means of dealing with large volumes of combined sewer overflow in Hamilton was to intercept it at the outlets, detain it and convey it to the wastewater treatment plant after the storm events. The recommended control strategy relies heavily on off-line storage, with an associated expansion of the Woodward Avenue wastewater treatment plant to achieve target reductions of combined sewer overflows to 1–4 per year on average. The region has begun to implement this Pollution Control Plan in earnest. Three off-line detention storage tanks are already in operation, construction of a fourth facility is well underway, and conceptual design of a number of other proposed facilities has commenced. To make the best possible use of these facilities and existing in-line storage, the region is implementing a microcomputer-based real-time control system. A number of proposed Woodward Avenue wastewater treatment plant process upgrades and expansions have also been undertaken. This paper reviews the region's progress in implementing these control measures.

scholarly journals The Challenge of Maintaining Stormwater Control Measures: A Synthesis of Recent Research and Practitioner Experience

2018 ◽  
Vol 10 (10) ◽  
pp. 3666 ◽  
Author(s):  
Andrew Erickson ◽  
Vinicius Taguchi ◽  
John Gulliver
Keyword(s):  
Scientific Research ◽  
Phosphorus Release ◽  
Control Measures ◽  
Vegetation Coverage ◽  
Regional Characteristics ◽  
Permeable Pavements ◽  
The World ◽  
Inspection And Maintenance ◽  
Stormwater Control Measures ◽  
Stormwater Control

The methods for properly executing inspection and maintenance of stormwater control measures are often ambiguous and inconsistently applied. This paper presents specific guidelines for inspecting and maintaining stormwater practices involving media filtration, infiltration, ponds, and permeable pavements because these tend to be widely implemented and often unsatisfactorily maintained. Guidelines and examples are based on recent scientific research and practitioner experience. Of special note are new assessment and maintenance methods, such as testing enhanced filtration media that targets dissolved constituents, maintaining proper vegetation coverage in infiltration practices, assessing phosphorus release from pond sediments, and the development of compressed impermeable regions in permeable pavements and their implications for runoff. Inspection and maintenance examples provided in this paper are drawn from practical examples in Northern Midwest USA, but most of the maintenance recommendations do not depend on regional characteristics, and guidance from around the world has been reviewed and cited herein.

Microplastics retained in stormwater control measures: Where do they come from and where do they go?

2021 ◽  
pp. 118008
Author(s):  
Vera S. Koutnik ◽  
Jamie Leonard ◽  
Joel B. Glasman ◽  
Jaslyn Brar ◽  
Hatice Ceylan Koydemir ◽  
...  
Keyword(s):  
Control Measures ◽  
Stormwater Control Measures ◽  
Stormwater Control
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