On-site stormwater detention for Australian development projects: Does it meet frequent flow management objectives?

Ronalds, Rodney; Rowlands, Alex; Zhang, Hong

doi:10.1016/j.wse.2019.03.004

Cited by 8 publications

(7 citation statements)

References 32 publications

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“…Storm events that happened on 18.01.2015 were two consecutive storms with a one-hour halt in between. Therefore, the events were separated into 18.01.2015(1) and 18.01.2015 (2). The availability of field data allowed the calibration and verification of a computer model [17][18]; and the verified model had then enabled the flow simulation due to the historical storm events to be carried out [19].…”

Section: ) Rainfall and Flow Measurementmentioning

confidence: 99%

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Case Study of Modular Pre-cast Concrete On-Site Stormwater Detention System during Monsoon Season in Southeast Asia

et al. 2020

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On-site stormwater detention system within a residential property is meant for an environmental protection device that temporarily stores stormwater within the property lot to mitigate flash flood, particularly during rainy seasons brought by the northeast monsoon. A field test was constructed in a house’s car porch with a 4.40 m x 4.70 m x 0.45 m tank filled with precast-concrete modular units with an effective storage volume of 3.97 m3. The system received water from a 95 m2 house roof via 0.1 m diameter pipe, discharged water via 0.05 m diameter pipe. It had recorded six observed storm events coincided with the 2019/2020 monsoon season that consisted 20–50 mm peak hourly rainfall, 0.0007–0.0018 m3 s-1 inflow, 0.0005–0.0012 m3 s-1 outflow and 0.21–0.47 m water level. Another four historical storm events coincided with the monsoon from 2015–2017 were sourced to augment the analysis. A computer model developed using the storm water management model was calibrated and verified using the six observed events. The Kolmogorov-Smirnov goodness of fit tests between the observed and modelled cumulative distributions had produced 0.01–0.14 maximum vertical distances that were lower than the 0.41–0.68 critical values indicating close matches. As such, the calibrated and verified model was used to simulate the historical storm events with 40–50 mm peak hourly rainfall and produced 0.0010–0.0013 m3 s-1 inflow, 0.00072–0.00076 m3 s-1 outflow and 0.41–0.45 m water level. By combining the field test and computer simulation model, it was found the system was able to contain all stormwaters from northeast monsoon. However, it had a weakness which the system was approaching its maximum capacity once the peak hourly rainfall exceeded 45 mm. With such a procedure in place, improvement could be carried out.

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Section: ) Rainfall and Flow Measurementmentioning

confidence: 99%

“…On-site stormwater detention system is an environmental protection device that mimics the natural function of the soil layer to absorb stormwater [1][2]. Referring to Figure 1 for a simple stormwater detention system, stormwater generated by rainfall enters the system via an inlet and leaves via an outlet.…”

Section: Introductionmentioning

confidence: 99%

Case Study of Modular Pre-cast Concrete On-Site Stormwater Detention System during Monsoon Season in Southeast Asia

et al. 2020

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“…These reservoirs can reduce the level or even eliminate the occurrence of floods. On-site stormwater detention (OSD) is a component of urban drainage systems [12] and a low impact development (LID) technology that helps reduce runoff and avoid overloading public stormwater infrastructure [13]. It can also contribute to the reduction of spatiotemporal variability in both local and river basin scales [2], and mitigate the effects of climate change in urban watersheds [14].…”

Section: Introductionmentioning

confidence: 99%

Private Lot Flood Peak Attenuation by Stormwater Detention Tanks

SCHELLIN

Dziedzic

2022

WIT Transactions on the Built Environment

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Changes in the hydrological cycle due to climate change and urbanization augment and accelerate runoff and flooding, degrade the urban environment, and cause human and material losses. Thus, it is important to implement measures that ensure urban hydrological conditions are kept as close as possible to pre-urbanization conditions, preventing floods. In addition to the conventional major and minor systems, cities may establish criteria for percentage of permeable area as well as stormwater management practices such as stormwater detention tanks, a type of low impact development technology (LID). The present study evaluates the adequacy of current practices in private lot detention tank design. It analyses time to empty, total detention time and flood peak abatement provided by detention tanks designed according to Curitiba's (Brazil) Bylaw 176/2007. Based on the results obtained, modifications were suggested to existing legislation to increase the efficiency of the detention tanks and, thus, reduce urban flooding and adapt to climate change. The proposed methodology can be applied elsewhere to guide detention tank design.

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“…An individual lot refers to a single property boundary defined by the land and survey authority, while a stormwater detention system refers to a manmade structure designed to hold stormwater [1]. A stormwater detention system within a property lot is tailored to mimic the ability of natural soil layer to absorb stormwater, in which the ability is lost due to the built-up area that blocks water to seep underground [2].…”

Section: Introductionmentioning

confidence: 99%

Catchment Size to Effective Tank Volume Relationships for Individual Lot Stormwater Detention System in Malaysian Detached House

2020

IJATCSE

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This paper describes an individual lot stormwater detention system that consists of multiple precast concrete modular green pavement units, developed by the authors. The tank size is determined at 4.40 m W, 4.70 m L and 0.45 m D with an effective tank volume of 3.93 m 3 after being filled with the said modular units. The small tank size allows the system to be inserted into a residential house's car porch. Maintaining the same tank size, exploration into different catchment sizes that drain water to the tank is carried out using two model intermediate and corner double-storey detached houses. The investigation is intended to figure out the optimum catchment size that could achieve the lowering of peak runoff caused by post-development condition to near pre-development condition. A computer model using Storm Water Management Model version 5.0 is developed to simulate scenarios of 40:60, 50:50 and 60:40 representing the contributing to non-contributing catchment ratios for intermediate and corner lots. Analysis of the simulation results show that 65% of the property lot designated as contributing catchment would contribute to achieve the desired pre-development condition.

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On-site stormwater detention for Australian development projects: Does it meet frequent flow management objectives?

Cited by 8 publications

References 32 publications

Case Study of Modular Pre-cast Concrete On-Site Stormwater Detention System during Monsoon Season in Southeast Asia

Case Study of Modular Pre-cast Concrete On-Site Stormwater Detention System during Monsoon Season in Southeast Asia

Private Lot Flood Peak Attenuation by Stormwater Detention Tanks

Catchment Size to Effective Tank Volume Relationships for Individual Lot Stormwater Detention System in Malaysian Detached House

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