urban runoff Articles
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How Does Urban Runoff Affect Water Quality?
Urban runoff may be a term that not everyone is familiar with, but at the same time, anyone who has lived in a town or city will likely have experienced it at least once in their lifetime. It is also not to be underestimated. It is one of the biggest threats to daily life, homes and wildlife. Read on to learn more about urban runoff and how it can affect water quality in your area. What is ...
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Storm effects on regional beach water quality along the southern California shoreline
Two regional studies conducted during dry weather demonstrated that the Southern California Bight (SCB) shoreline has good water quality, except near areas that drain land-based runoff. Here, we repeat those regional studies 36 h after a rainstorm to assess the influence of runoff under high flow conditions. Two hundred and fifty-four shoreline sites between Santa Barbara, California and ...
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Freshwater Stream Invertebrates: Response to Water Quality Impairment and Physical Habitat Alteration
Summary Results of three large-scale regional benthic macroinvertebrate monitoring programs from Los Angeles, Orange, and San Diego counties were analyzed. Benthic community quality was quantified using a southern California IBI and was compared to the physical habitat quality scores of each monitoring reach. The purpose of the comparison was to determine if physical habitat quality was a ...
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Pollution of surface runoff from the territory of Brest, Belarus
The assessment of the influence of urban surface runoff on the quality of river water in the city of Brest was made. Surface runoff was studied in two phases (winter and summer) for the following parameters: pH, total suspended solids (TSS), concentration of chloride, nitrate, phosphate and ammonium ions, total oils. The results show that urban surface runoff is an important source of pollution ...
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Characterization and first flush analysis in road and roof runoff in Shenyang, China
As urbanization increases, urban runoff is an increasingly important component of total urban non-point source pollution. In this study, the properties of urban runoff were examined in Shenyang, in northeastern China. Runoff samples from a tiled roof, a concrete roof and a main road were analyzed for key pollutants (total suspended solids (TSS), total nitrogen (TN), total phosphorus (TP), ...
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Effect of age and rainfall pH on contaminant yields from metal roofs
Metal roofs are recognized for conveying significant metal loads to urban streams through stormwater runoff. Metal concentrations in urban runoff depend on roof types and prevailing weather conditions but the combined effects of roof age and rainfall pH on metal mobilization are not well understood. To investigate these effects on roof runoff, water quality was analysed from galvanized iron and ...
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Comparative evaluation of runoff and water quality using HSPF and SWMM
Stormwater pollution is the untreated contaminated water that drains into natural waterways from land uses within an urban catchment. Several studies have demonstrated the deterioration of water quality in receiving bodies of water caused by stormwater runoff. The data have reported that urban runoff play primary roles in degrading water quality in adjacent aquatic systems. The accurate ...
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New strategies in stormwater-meltwater management in the city of Bergen, Norway
ABSTRACTIn the City of Bergen, Norway, extensive measures against point pollution sources are now to be implemented and to be finished before the end of year 2000, improving the receiving water conditions. Local politicians and public opinion support high standards of receiving water, even higher than the national level. Future improvements in the receiving water quality is planned through ...
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Screening of organic contaminants in urban snow
Snowmelt is known to cause peak concentrations of pollutants, which may adversely affect receiving water quality. High concentrations of metals and suspended solids in snow have been reported, whereas studies on organic pollutants are rare. This study aims at investigating the occurrence of anthropogenic organic compounds in urban snow in Gothenburg (Sweden). The most frequently detected organic ...
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The use of simulated rainfall to study the discharge process and the influence factors of urban surface runoff pollution loads
An understanding of the characteristics of pollutants on impervious surfaces is essential to estimate pollution loads and to design methods to minimize the impacts of pollutants on the environment. In this study, simulated rainfall equipment was constructed to investigate the pollutant discharge process and the influence factors of urban surface runoff (USR). The results indicated that ...
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Assessing Risk Information Concerning Coastal Runoff
Executive Summary In coastal urban watersheds, runoff from the landscape eventually reaches the ocean. If beaches along the ocean are used for recreation, three vital and interrelated questions arise. First, whether and to what extent does urban runoff degrade the quality of ocean water that is used for recreation? Second, to what extent docs this runoff-related ocean pollution pose a risk to ...
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Analysis of effects of climate change on runoff in an urban drainage system: a case study from Seoul, Korea
Both water quantity and quality are impacted by climate change. In addition, rapid urbanization has also brought an immeasurable loss of life and property resulting from floods. Hence, there is a need to predict changes in rainfall events to effectively design stormwater infrastructure to protect urban areas from disaster. This study develops a framework for predicting future short duration ...
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Comparing urban runoff quality of a felt roof and an asphalt road in Beijing
Water pollution and water shortage are two of the most important environmental problems in Beijing, China. Water quality of rainfall from July to August 2011 and runoff from a felt roof and an asphalt road were analyzed chemically and further investigated because these are potential sources for augmenting city supplies. Results indicate that chemical oxygen demand (CODCr), total phosphorus ...
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Stormwater Management Program Long-Term Effectiveness Monitoring: Can I Reduce Sampling Frequency and Still Detect Trends to Determine BMP Effectiveness
INTRODUCTION Stormwater program managers are challenged with meeting regulatory monitoring requirements to identify long-term trends and the effectiveness of the implementation of Best Management Practices (BMPs) and meeting multiple program requirements with finite resources. This paper provides stormwater managers with methods and several real-world scenarios using 10 years of data from the ...
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An alternative approach to modelling stormwater runoff from small urban catchments
The inability of current stormwater quality models to reproduce historical pollutographs accurately and reliably has prompted the need to introduce alternative approaches to simulate stormwater runoff from urban catchments. In view of the increasing popularity of designing urban stormwater systems using the Water Sensitive Urban Design (WSUD) approach, it is also essential to adopt a modelling ...
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Pollutant release from a disturbed urban snowpack in northern Sweden
Water and pollutant release from a disturbed urban snowpack was studied in an experimental plot encompassing a road section and the adjacent grassed boulevard in the city of Luleå, in northern Sweden. Winter road maintenance in this area includes snow ploughing and applications of grit without any road salts. During the study period, 18 snowmelt events were observed. Compared to rural areas and ...
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Rough set approach to the evaluation of stormwater pollution
This paper addresses the problem of urban stormwater quality and its impacts on the receiving water. In order to describe this phenomenon, research aimed at creating a mathematical model of pollution has been conducted. Although various deterministic and stochastic models exist already, the quality of stormwater phenomenon deserves a very careful and thoughtful validation. In order to take ...
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Performance evaluation and a sizing method for hydrodynamic separators treating urban stormwater runoff
This study reports on 6 years of performance monitoring of stormwater hydrodynamic separators in Korean urban catchments. One hundred and thirty-seven storm events were monitored in four hydrodynamic separators of two different types from 2006 to 2012. Mean values of the event average removal efficiencies of total suspended solids (TSS) for the four hydrodynamic separators were 43.69, 8.54, ...
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Using sediment particle size class analysis to better understand urban land-use effects
Abstract A nested-scale experimental watershed study design was used to demonstrate rainfall-runoff and sediment particle size class variability in a representative urbanizing watershed in central Missouri USA. On average, sediment particle size classes were almost twice as large (2.0 to 500um size range) in headwaters, relative to an urban setting. Eighty percent of total sediment in the ...
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Preliminary investigation into the pollution reduction performance of swales used in a stormwater treatment train
Permeable pavements have been shown to be effective stormwater treatment devices that can greatly reduce surface runoff and significantly improve the quality of stormwater runoff in urban areas. However, the potential problems with sediment clogging and consequent maintenance requirements have been identified as the main barriers to more widespread adoption of permeable pavements in urban ...
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