ORCID Profile
0000-0002-6120-5363
Current Organisations
University of South Australia - Mawson Lakes Campus
,
University of South Australia
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Publisher: Springer International Publishing
Date: 2019
Publisher: MDPI AG
Date: 05-01-2023
DOI: 10.3390/HORTICULTURAE9010067
Abstract: This paper examines the social, economic and environmental potential of Urban Agriculture (UA) based on information from forty distinct locations in each of the two regions: Adelaide, South Australia and Kathmandu Valley, Nepal, representing the erse developmental background. Modelling is used to estimate equivalent employment, scale appropriateness, and earnings in comparison to labour use from commercial urban farming and gardening style UA, together with carbon dioxide emissions for two vegetable types. The study investigates the influence of distance and production scale under manual to modest mechanisation for urban vegetable production, finding that the interplay between labour use and mechanisation can favour scale-appropriate UA practices with better labour productivity and economic and social advantage. The distribution (assumed to be by car for UA) contributes the largest proportion of emissions, and the production component (even with mechanisation) contributes a relatively small portion per unit of production. We recommend that governments and planners should facilitate scale-appropriate mechanisation through better planning and policy instruments for UA’s sustainability.
Publisher: MDPI AG
Date: 26-09-2016
Publisher: Springer Science and Business Media LLC
Date: 27-12-2019
DOI: 10.1038/S41598-019-56248-7
Abstract: There is increasing demand for safe and effective sanitizers for irrigation water disinfection to prevent transmission of foodborne pathogens to fresh produce. Here we compared the efficacy of pH-neutral electrolyzed oxidizing water (EOW), sodium hypochlorite (NaClO) and chlorine dioxide (ClO 2 ) against single and mixed populations of E. coli , Listeria and Salmonella under a range of pH and organic matter content. EOW treatment of the mixed bacterial suspension resulted in a dose-dependent ( mg/L free chlorine), rapid ( min) and effective (4–6 Log 10 ) reduction of the microbial load in water devoid of organic matter under the range of pH conditions tested (pH, 6.0, 7.0, 8.4 and 9.2). The efficacy of EOW containing 5 mg/L free chlorine was unaffected by increasing organic matter, and compared favourably with equivalent concentrations of NaClO and ClO 2 . EOW at 20 mg/L free chlorine was more effective than NaClO and ClO 2 in reducing bacterial populations in the presence of high (20–100 mg/L) dissolved organic carbon, and no regrowth or metabolic activity was observed for EOW-treated bacteria at this concentration upon reculturing in rich media. Thus, EOW is as effective or more effective than other common chlorine-based sanitizers for pathogen reduction in contaminated water. EOW’s other characteristics, such as neutral pH and ease of handling, indicate its suitability for fresh produce sanitation.
Publisher: Elsevier BV
Date: 05-2022
Publisher: Southern Cross Publishing
Date: 10-05-2021
DOI: 10.21475/AJCS.21.15.05.P3052
Abstract: The impact of water quality with varying deficit irrigation level on the plant biomass and fruit quality parameters of greenhouse tomato (Lycopersicon esculentum L. cv Izmir) was investigated. A pot-based experiment was carried out over two growing seasons (2017-2018 and 2018-2019). Three water qualities: groundwater, recycled wastewater and an equal mix of both were applied in four irrigation scenarios which aimed to maintain soil moisture levels at 60%, 70%, 80% and 100% of field capacity. A surface drip irrigation system was designed maintaining irrigation frequency of two days. Results showed that both water quality and deficit irrigation significantly affected plant biomass. The fresh fruit weight was rather uniform, ranged from 53.2 to 85.4 gram and found highest in full irrigation. Most of the fruit quality parameters were not significantly affected by water quality.The significantly higher values of total soluble solid (7.87 degree brix), fruit firmness (9.28 kg/cm2), fruit pH (4.24) and vitamin C content (68.33 mg/kg) were measured in treatments maintaining soil moisture content at 60% of field capacity (most water-stressed conditions). Based on these findings, it recommended that by adopting deficit irrigation and maintaining soil moisture at 60% of field capacity, fruit quality parameters can be significantly improved. In contrast, fresh fruit weight and plant biomass were reduced.
Publisher: Emerald
Date: 06-11-2009
DOI: 10.1108/10650740911004831
Abstract: This paper aims to examine some of the strengths and weaknesses of the use of online tools such as wikis and blogs for assessment purposes, with the aim of proposing future developments and improvements. The paper utilises a case study approach by examining the outcomes of a new first‐year course for all engineering students at the Institution Name that was introduced in 2008. The course, Sustainable Engineering Practice (SEP), gives students an insight into the disciplines of engineering and emphasises the skills required for working in multi‐disciplinary teams. It introduces students to the profession of engineering and how it is practised within a sustainable context. The major assessment task for the course is the Engineers Without Borders (EWB) challenge and, for the first time in the engineering program at the university, wikis and blogs were used as assessment tools to evaluate student progress in meeting the course objectives. The evidence of student reflections in their course blogs, and the discussions of the staff teaching team in course meetings, have been utilised to consider the strengths and weaknesses of the pedagogy adopted. These sources indicated that the use of these tools for assessment was effective, but that some modifications were required to improve outcomes for both staff and students.
Publisher: Informa UK Limited
Date: 03-04-2022
Publisher: American Society of Civil Engineers (ASCE)
Date: 08-2021
Publisher: Elsevier BV
Date: 02-2021
Publisher: Southern Cross Publishing
Date: 10-01-2023
DOI: 10.21475/AJCS.23.17.01.P3755
Abstract: The objective of this paper is to examine the impact of varying deficit irrigation level and water quality scenarios on economic responses of tomatoes (Solanum lycopersicum cv. Izmir) produced in a greenhouse environment. Groundwater, recycled wastewater and a blend of both were selected as water qualities. Four irrigation scenarios were maintained including soil moisture at 60%, 70%, 80% and 100% of field capacity. The treatment maintaining soil moisture at 100% field capacity was control in this study for each water quality. The selected irrigation method and the soil texture were the drip and loamy sand respectively. The effects of deficit irrigation and water quality on the benefit-cost ratio, revenue generated per m3 of water usage, cost function and net financial return were examined. Benefit-cost ratio was a maximum of 1.37 for the control treatment of recycled wastewater. All the selected deficit irrigation treatments produced the benefit-cost ratio more than one except 60% field capacity level. Revenue generation per m3 of water usage was found the highest in treatments maintaining soil moisture content at 80% field capacity despite of water quality. Based on the benefit-cost ratio, cost function and revenue generated per cubic meter of water use, this study recommended the deficit irrigation level at 80% field capacity as the most cost-effective and water efficient strategy for greenhouse grown tomatoes.
Publisher: Elsevier BV
Date: 12-2012
Publisher: MDPI AG
Date: 14-07-2020
DOI: 10.3390/AGRICULTURE10070297
Abstract: This study deals with the evaluation of the effects of deficit irrigation (DI) and water quality (WQ) on the vegetative and productive response of greenhouse-grown tomatoes (Lycopersicon esculentum Mill. cv. Izmir). A pot-based experiment was carried out over two growing seasons. Three WQ: (groundwater, recycled wastewater and a mix of both) were applied in four irrigation scenarios which targeted soil moisture content (SMC) maintaining at 60%, 70%, 80% and 100% of field capacity (FC). Results showed that both DI and WQ had significant effects on crop development, yield and water productivity. The highest values of plant height (186.0 ± 0.58 cm) and stem diameter (23.40 ± 0.02 mm) were found at 100% FC (control). Total yield ranged from 2.33 ± 0.03 kg lant (60% FC) to 4.05 ± 0.06 kg lant (control). However, mild water stress (SMC maintaining at 80% FC) showed a positive effect on irrigation water use efficiency (IWUE) without significant yield reduction compared to control. IWUE was at its maximum (31.77 ± 0.47 kg/m3) at 80% FC. A DI regime based on 80% FC could be an efficient irrigation strategy particularly in water-limiting condition. Recycled wastewater was superior among the three WQ for achieving a better crop growth, yield and water productivity at same DI level.
Publisher: MDPI AG
Date: 14-10-2023
DOI: 10.3390/LAND12101920
Publisher: Elsevier BV
Date: 11-2017
Publisher: MDPI AG
Date: 19-07-2023
DOI: 10.3390/SU151411251
Abstract: Urban Agriculture (UA) is widely presented as a feature of sustainable cities, with various claims around economic, social, and/or environmental benefits. However, the extent to which these different benefits may reinforce or compete with one another is not clear. This paper presents an integrated modelling framework using proxy measures for economic benefit (the net margin, NM), social benefit (the full-time farmer employment equivalent (FTE) per consumer) and environmental benefit (reduction in carbon dioxide emissions, CO2). The model is applied in two ergent development scenarios, including Adelaide, Australia, and the Kathmandu Valley, Nepal, to study the characteristic features of UA in different settings. Two-stage optimisation is used to explore trade-offs and synergies when pursuing different objectives (NM, FTE and CO2). The model seeks the optimal farming area and selects from three levels of mechanisation (non-mechanised, garden tiller and garden cultivator), two purposes (gardening and commercial), two crop value categories (mixed and mid- to high-value vegetables) and two market mechanisms (wholesale vs. retail). The results of the optimisation provide insights into the key features of a UA system depending on the objective(s) being pursued, which we believe is a novel approach to justify UA research. For instance, the model favours a commercial UA form (in which both land and labour are costed) with a larger area when pursuing an economic objective, whereas it favours a gardening form of UA when aiming to maximise participation in the food system, with the preferred area depending on the extent to which either the economic or environmental objective is also being pursued. In Adelaide, the model favours commercial UA for the best-case profit and carbon emissions, and gardening for FTE maximisation. In the Kathmandu Valley, the model chooses the gardening UA within the given model assumptions.
Publisher: MDPI AG
Date: 14-10-2021
DOI: 10.3390/W13202865
Abstract: Water quality is a key consideration for urban stormwater harvesting via aquifers. This study assessed catchment spill management options based on a calibrated dynamic wave routing model of stormwater flow in an urban catchment. The study used measured travel times, pluviometer and gauging station observations from 21 storms to calibrate a stormwater model to simulate transport of pollutants from spill locations to the point of harvest. The simulations considered the impact of spill locations, spill durations, storm intensities and storm durations on the pollutant concentration at the point of harvest and travel time of a pollutant spill to the harvesting point. During dry weather, spill events travelled slower than spills occurring during wet weather. For wet weather spills, the shortest travel times tended to occur in higher intensity storms with shorter duration, particularly when a spill occurred in the middle of the storm. Increasing the intensity of rainfall reduced the peak concentration of pollutant at the harvest point via dilution, but it also reduced the time of travel. On a practical level, due to the short response times in urban catchments, management of spills should be supported by automated detection/ ersion systems to protect stormwater harvesting schemes.
Publisher: Thomas Telford Ltd.
Date: 07-2011
DOI: 10.1680/WAMA.2011.164.7.361
Abstract: The harvesting, storage and reuse of stormwater from permeable pavement reservoirs provides an opportunity to alleviate water shortages in urban areas. Reservoirs may be filled with a range of basecourse aggregate materials that provide structural support to the pavement. The materials have the potential to affect the quality of stored water. This research investigated changes in water quality when water was stored in two types of basecourse aggregate. Synthetic stormwater was placed in permeable pavement reservoir models filled with dolomite aggregate or quartzite aggregate or control reservoirs with no aggregate. The influence of residence time was investigated by monitoring stored water quality for up to 144 h. Conductivity and pH increased in both aggregate-filled reservoirs. Total suspended solids and turbidity also increased in the aggregate-filled reservoirs, before falling to levels significantly lower than the control reservoirs. Levels of phosphorous and organic nitrogen were significantly lower in the aggregate-filled reservoirs after 144 h. Total zinc, copper and lead were reduced by 94–99% in the aggregate-filled reservoirs compared with the controls after 144 h storage.
Publisher: Elsevier BV
Date: 06-2022
Publisher: Elsevier BV
Date: 10-2020
Publisher: Elsevier BV
Date: 07-2017
DOI: 10.1016/J.SCITOTENV.2017.02.226
Abstract: Rivers are one of the main water resources for agricultural, drinking, environmental and industrial use. Water quality indices can and have been used to identify threats to water quality along a stream and contribute to better water resources management. There are many water quality indices for the assessment and use of surface water for drinking purposes. However, there is no well-established index for the assessment and direct use of river water for irrigation purposes. The aim of this study was to adopt the framework of the National Sanitation Foundation Water Quality Index (NSFWQI) and, with adjustments, apply it in a way which will conform to irrigation water quality requirements. To accomplish this, the NSFWQI parameters for drinking water use were amended to include water quality parameters suitable for irrigation. For each selected parameter, an in idual weighting chart was generated according to the FAO 29 guideline. The NSFWQI formula was then used to calculate a final index value, and for each parameter an acceptable range in this value was determined. The new index was then applied to the Ghezel Ozan River in Iran as a case study. A forty five year record of water quality data (1966 to 2010) was collected from four hydrometery stations along the river. Water quality parameters including Na
Publisher: Elsevier BV
Date: 03-2018
DOI: 10.1016/J.JENVMAN.2017.12.046
Abstract: Water sensitive urban design and similar concepts often recommend a 'treatment train' is employed to improve stormwater quality. In this study, the capability of a combined permeable pavement and bioretention basin was examined with a view to developing a permeable pavement reservoir that can supplement the irrigation needs of a bioretention system in semi-arid climates. Salinity was a key study parameter due to published data on salinity in permeable pavement storage, and the potential to harvest water contaminated with de-icing salts. To conduct experiments, roofwater was collected from a roof in Adelaide, South Australia. Water was amended with NaCl to produce a control runoff (no added salt), a medium (500 mg/l) and a high (1500 mg/l) salinity runoff. Water was then run through the pavement into the storage reservoir and used to irrigate the bioretention system. S les were collected from the roof, the pavement reservoir and the bioretention system outflow to determine whether significant water quality impacts occurred. Results show that while salinity levels increased significantly as water passed through the pavement and through the bioretention system, the increase was beneficial for irrigation purposes as it was from Ca and Mg ions thus reducing the sodium absorption ratio to levels considered 'good' for irrigation in accordance with several guidelines. Permeable paving increased pH of water and this effect was prominent when the initial salt concentration increased. The study shows that permeable pavements with underlying storage can be used to provide supplementary irrigation for bioretention systems, but high initial salt concentrations may present constraints on beneficial use of stormwater.
Publisher: MDPI AG
Date: 09-2018
DOI: 10.3390/HORTICULTURAE4030023
Abstract: Capillary irrigation systems have been investigated for some years as a means to deliver water to plants in container gardening. This review paper identifies that traditional capillary irrigation systems such as capillary wicks, capillary mats, and ebb and flow systems have been shown to produce higher crop yields and use less water than conventional irrigation methods. In addition, capillary irrigation offers an added advantage by reducing the volume of potentially harmful leachate into surrounding soil environments. However, these systems are basically limited to small pot sizes and are widely used for growing ornamental and nursery plants in glasshouse conditions. Further, the cost and complexity of Negative Pressure Difference Irrigation may have limited its practical use. Conversely, wicking beds (WBs) are low-tech and water-efficient systems which can be used for growing plants with different rooting depths. Irrespective of the wide acceptance of WBs among the growing community, this review recognises that there is no published research providing design recommendations for WBs and their expected performance relative to other irrigation systems. Therefore, some potential advantages of WBs are noted in the context of capillary irrigation research however, a substantial knowledge gap exists relating to the optimised design and use of WBs.
Publisher: Springer Science and Business Media LLC
Date: 08-09-2019
DOI: 10.1007/S11356-018-3083-Y
Abstract: The TREENET inlet is an emerging water-sensitive urban design technology that consists of a novel kerb side inlet coupled with a leaky well infiltration system. The inlets have been retrofitted to existing roads since 2006 however, there is currently little information available on the effectiveness of these inlet and leaky well systems. This study investigated the performance of the kerb side inlets and leaky well system for water quality improvement prior to infiltration to native soil. The leaky wells included four filter media types, namely gravel, water treatment solids, sandy loam and clay. To compare the performance of the four filter media types, batch and column studies were performed in the laboratory. The best performance was observed using the sandy loam as a filter media, followed by clay, water treatment solids and then gravel. The selection of effective media for removal of heavy metals is important as each media type has different pollutant removal capacity, infiltration and clogging performance.
Publisher: MDPI AG
Date: 30-01-2020
DOI: 10.3390/W12020375
Abstract: The contribution of this paper is a comparison of the installation cost of a conventional drainage system consisting of a network of pits and pipes, with that of a hybrid drainage system comprising a network of pits and pipes, supported by allotment scale infiltration measures in a modern greenfield residential development. The case study site is located in Pipers Crest, near Strathalbyn, South Australia. This as-built site consists of 56 allotments, 42 pits (hence 42 sub-catchments), one detention basin and over 1000 m of drainage pipes. In this study, conventional and hybrid (combination of conventional and Water Sensitive Urban Design, WSUD systems) drainage systems were designed to convey minor storm events of 10% annual exceedance probability (AEP), and checked for major storm events of 5% AEP, using the DRAINS model and/or source control principles. The installation costs of the conventional and hybrid drainage systems were estimated and compared based upon cost estimates derived from Australian literature. The results of the study indicate that satisfactory drainage was possible using the conventional or hybrid system when the two systems were designed to have outflow not exceeding the pre-developed flow. The hybrid drainage system requires smaller pipe sizes compared to the conventional system. Also, the size of the detention basin and maximum outflow rate of the hybrid system were smaller than those for the conventionally drained site. The installation cost of the hybrid drainage system was 18% less than that of the conventional drainage system when the objective was to accommodate 10% and 5% AEP storms.
Publisher: American Society of Civil Engineers (ASCE)
Date: 02-2021
Publisher: MDPI AG
Date: 12-07-2023
DOI: 10.3390/LAND12071396
Abstract: Soil erosion and sediment transport have significant consequences, including decreased agricultural production, water quality degradation, and modification to stream channels. Understanding these processes and their interactions with contributing factors is crucial for assessing the environmental impacts of erosion. The primary objective of this review is to identify a suitable soil erosion and sediment transport model for catchment-scale application. The study considers various model selection processes, including model capability and the spatial and temporal domains for assessing spatiotemporal distributions. The review acknowledges the limitations, uncertainties, and unrealistic assumptions associated with soil erosion and sediment transport models. Models are usually developed with a particular objective, which demands an assessment of capabilities, spatial, and temporal applicability, and catchment-scale applicability. Distributed models are often preferred for catchment-scale applications, as they can adequately account for spatial variations in erosion potential and sediment yield, aiding in the evaluation of erosion-contributing elements and planning erosion control measures. Based on the findings of this study, the authors encourage utilizing models (such as Soil and Water Assessment Tool (SWAT) or Automated Geospatial Watershed Assessment Tool (AGWA)) that can forecast net erosion as a function of sediment output for catchment erosion and sediment yield modeling. This review helps researchers and practitioners involved in erosion and sediment modeling by guiding the selection of an appropriate model type based on specific modeling purposes and basin scale. By choosing appropriate models, the accuracy and effectiveness of sediment yield estimation and erosion control measures can be improved.
Publisher: IWA Publishing
Date: 12-2009
DOI: 10.2166/WST.2009.753
Abstract: Permeable pavement reservoirs provide an important opportunity for the harvesting and storage of stormwater for reuse. This research aims to determine whether storage in dolomite, calcite and quartzite mineral aggregates in the base course of a permeable pavement impacts on the survival of the pathogen indicator organism Escherichia coli (E. coli) in storage. The reasons for depletion were also investigated. Twelve model permeable pavement storage reservoirs were filled, in triplicate, with dolomite, calcite and quartzite. Three reservoirs contained no aggregate. After filling with pathogen spiked rainwater, the concentration of E. coli was examined for 22 days in the reservoirs. The reservoirs were then agitated to determine if there was E. coli present which was not in aqueous suspension. The results of the experiments show that there is no significant difference in the depletion of E. coli found in reservoirs without aggregate, and those filled with dolomite or calcite. The rate of depletion was found to be significantly lower in the quartzite filled reservoirs. Agitation of the reservoirs yielded increases in the aqueous concentration of E. coli in all reservoir types, suggesting that the bacteria are adhering to the surface of the mineral aggregate and to the reservoir walls.
Publisher: Informa UK Limited
Date: 19-12-2020
Publisher: MDPI AG
Date: 31-07-2022
DOI: 10.3390/HORTICULTURAE8080691
Abstract: Urban Agriculture (UA) is the widespread practice of food production within available city space using non-commercial, commercial and hybrid production technologies. The economic viability of UA remains a concern among UA practitioners. To investigate UA’s viability land, labour and distribution cost are analyzed, and margin and benefit–cost ratio (BCR) under vacant lot, rooftop/backyard and discretionary labour UA are calculated. We present a straightforward approach to gauge the economic viability of UA taking ex les from 40 distinct locations of two ergent development contexts of Adelaide, South Australia and Kathmandu Valley, Nepal. UA seems potentially viable by selecting high-value crops in Adelaide but showed little chance of viability under low-value crop scenarios in both contexts. The high cost of land is shown to be the primary driver of cost for UA. Labour cost appears to be a critical difference between the two cities, being an important constraint for the economic viability in Adelaide, where the wage rate is high. To improve economic viability, the respective governments and planners should consider better ways to avail subsidised land through policy intervention and volunteer or subsidised labour arrangement mechanisms. Home food gardens accessing available land and labour as a discretionary/spare time activity with zero distribution cost may represent the best way to produce food without exceeding market costs in cities.
Publisher: Elsevier BV
Date: 10-2019
DOI: 10.1016/J.JENVMAN.2019.06.021
Abstract: Kerb side inlets with adjacent leaky wells are an emerging tool to harvest stormwater and to reduce runoff volumes and peak flow rates. This is achieved by collecting the first flush runoff into kerb side storages and infiltrating this water into the surrounding soil, thereby also reducing stormwater pollutant loadings. The hydraulic performance of the kerb side inlet, filter media and surrounding soil are key factors in the performance of these systems. However, no field or laboratory data are currently available for the hydraulic performance of a kerb side tree inlet pit. In this study, 12 tree inlet pits were constructed and filled with various media types including gravel, water treatment solids (a recycled waste product), sandy loam and clay to examine (1) leaky well infiltration rates (2) emptying times of the wells and (3) the well capacity (runoff storage volume) before and after runoff filtering through the wells. Using a laboratory model, the water harvesting performance of the kerb side inlet plate was also examined for various road longitudinal slopes. Using the field and laboratory data, simulation of the well performance was undertaken using the Model for Urban Stormwater Improvement Conceptualisation (MUSIC) to assess the capacity of these systems to reduce runoff volumes at the residential street scale. It was hypothesised that the type of filter media used in leaky well systems has a significant impact on the infiltration rate, regardless of the native soil type through which the stormwater eventually infiltrates. The results showed that the infiltration rates of systems filled with gravel were significantly higher than for the other media types, and this was followed by water treatment solids, sandy loam and clay. The results of the MUSIC modelling indicated that 2.8% of the mean annual runoff volume in the catchment could be harvested by the systems at the case study site. It was found that selection of high infiltration rate media and regular maintenance are the key factors for maintaining long-term performance of these systems.
Publisher: Elsevier
Date: 2018
Publisher: International Society for Horticultural Science (ISHS)
Date: 06-2013
Publisher: Springer Science and Business Media LLC
Date: 23-12-2020
Publisher: MDPI AG
Date: 22-12-2021
DOI: 10.3390/W14010014
Abstract: The conveyance of stormwater has become a major concern for urban planners, considering its harmful effects for receiving water bodies, potentially disturbing their ecosystem. Therefore, it is important to characterize the quality of catchment outflows. This information can assist in planning for appropriate mitigation measures to reduce stormwater runoff discharge from the catchment. To achieve this aim, the article reports the field data from a typical urban catchment in Australia. The pollutant concentration from laboratory testing is then compared against national and international reported values. In addition, a stochastic catchment model was prepared using MUSIC. The study in particular reported on the techniques to model distributed curbside leaky wells with appropriate level of aggregation. The model informed regarding the efficacy of distributed curbside leaky well systems to improve the stormwater quality. The results indicated that catchment generated pollutant load, which is typical of Australian residential catchments. The use of distributed storages only marginally improves the quality of catchment outflows. It is because ability of distributed leaky wells depended on the intercepted runoff volume which is dependent on the hydrological storage volume of each device. Therefore, limited storage volume of current systems resulted in higher contributing area to storage ratio. This manifested in marginal intercepted volume, thereby only minimum reduction in pollutant transport from the catchment to outlet. Considering strong correlation between contributing impervious area and runoff pollutant generation, the study raised the concern that in lieu of following the policy of infill development, there can be potential increase in pollutant concentration in runoff outflows from Australian residential catchments. It is recommended to monitor stormwater quality from more residential catchments in their present conditions. This will assist in informed decision-making regarding adopting mitigations measures before considering developments.
Publisher: American Society of Civil Engineers
Date: 16-05-2016
Publisher: MDPI AG
Date: 28-06-2016
DOI: 10.3390/W8070272
Publisher: Elsevier BV
Date: 11-2018
Publisher: Elsevier BV
Date: 05-2022
DOI: 10.1016/J.WATRES.2022.118273
Abstract: Distributed infiltration systems can benefit downstream water bodies by reducing the runoff flowrate and volume discharges from the catchment. Investigating their runoff flowrate and volume reduction potential at the catchment scale will inform decision makers regarding their efficacy for managing catchment outflows. To this end, we conducted field investigations at the residential catchment scale for three years. The study monitored the catchment for one year before the installation of leaky well systems (preinstallation) and two years after installation (postinstallation). The hydrological model, calibrated to preinstallation catchment outflows, acted as a virtual control tool. Runoff flow outputs from the control model and two years of monitored runoff flow data from the postinstallation period were analysed using statistical methods. The statistical tests showed a significant 13% reduction in average flowrates in storms with a corresponding runoff flowrate of up to 50 L/s. The study further reported the ability of infiltration systems to reduce runoff volume in the catchment by 9%. This reduction was not significant, however, as per the results of the statistical analysis. We then fitted the generalized linear model (GLM) to the monitored and simulated runoff volume data. This enabled us to break down the effect of curbside infiltration systems on runoff volume according to corresponding peak flowrates during the storm. The results of the two-way ANOVA performed to detect significant differences in the regression slopes of the GLM indicated that curbside infiltration systems significantly reduced runoff volume for storms when the runoff flowrates remained below 100 L/s.
Location: Australia
No related grants have been discovered for Baden Myers.