scholarly journals Development of detailed distributed urban drainage models using remote sensing and GIS data.

2021 ◽  
Author(s):  
Moh Moh Lin Khin
Keyword(s):  
High Resolution ◽  
Image Classification ◽  
Stormwater Management ◽  
Satellite Image ◽  
Low Impact Development ◽  
Remote Sensing And Gis ◽  
Source Control ◽  
Urban Drainage ◽  
Gis Data ◽  
Research Findings

Surface runoff source control such as Low Impact Development (LID) techniques are being used as retrofit options for older developed areas that lack available land to implement conventional practices such as stormwater management ponds. The complexity of the catchment area requires detailed distributed urban drainage models, which need high resolution land cover information, to accurately estimate the benefits that LIDs provide. This thesis explores the use of high resolution WorldView‐2 satellite image in urban drainage modelling. A proposed two‐stage image classification method achieved 83% in image classification accuracy. The classified image was then used to model streets, where the drainage is provided by curb and gutter, roadside ditches and LID. The developed urban drainage models gave comparable but mixed results for different drainage systems compared to the observed runoff data and Geographic Information System (GIS)‐developed models. This research findings provide guidance to modellers in developing detailed distributed urban drainage models.

scholarly journals Development of detailed distributed urban drainage models using remote sensing and GIS data.

2021 ◽  
Author(s):  
Moh Moh Lin Khin
Keyword(s):  
High Resolution ◽  
Image Classification ◽  
Stormwater Management ◽  
Satellite Image ◽  
Low Impact Development ◽  
Remote Sensing And Gis ◽  
Source Control ◽  
Urban Drainage ◽  
Gis Data ◽  
Research Findings

Surface runoff source control such as Low Impact Development (LID) techniques are being used as retrofit options for older developed areas that lack available land to implement conventional practices such as stormwater management ponds. The complexity of the catchment area requires detailed distributed urban drainage models, which need high resolution land cover information, to accurately estimate the benefits that LIDs provide. This thesis explores the use of high resolution WorldView‐2 satellite image in urban drainage modelling. A proposed two‐stage image classification method achieved 83% in image classification accuracy. The classified image was then used to model streets, where the drainage is provided by curb and gutter, roadside ditches and LID. The developed urban drainage models gave comparable but mixed results for different drainage systems compared to the observed runoff data and Geographic Information System (GIS)‐developed models. This research findings provide guidance to modellers in developing detailed distributed urban drainage models.

scholarly journals Evaluation of Low Impact Development and Nature-Based Solutions for stormwater management: a fully distributed modelling approach

2019 ◽  
Author(s):  
Yangzi Qiu ◽  
Abdellah Ichiba ◽  
Igor Da Silva Rocha Paz ◽  
Feihu Chen ◽  
Pierre-Antoine Versini ◽  
...  
Keyword(s):  
High Resolution ◽  
Stormwater Management ◽  
Low Impact Development ◽  
Peak Discharge ◽  
Small Scale ◽  
Spatial Distributions ◽  
Land Uses ◽  
Runoff Volume ◽  
Total Runoff ◽  
Porous Pavement

Abstract. Currently, Low Impact Development (LID) and Nature-Based Solutions (NBS) are widely accepted as sustainable approaches for urban stormwater management. However, their complex impacts depend on the urban environmental context as well as the small-scale heterogeneity, which need to be assessed by using the fully distributed hydrological model and high resolution data at small scale. In this paper, a case study (Guyancourt), located in the South-West of Paris, was explored. Three sets of high resolution X-band radar data were applied to investigate the impact of variability of spatial distribution of rainfall. High resolution geographic information has been processed to identify the suitable areas that can be covered by the LID/NBS practices, porous pavement, green roof, and rain garden. These individual practices, as well as the combination of the three, were implemented as scenarios in a fully distributed and physically-based Multi-Hydro model, which takes into consideration the variability of the whole catchment at 10 m scale. The performance of LID/NBS scenarios are analysed with two indicators (total runoff volume and peak discharge reduction), with regards to the hydrological response of the original catchment (baseline scenario). Results are analysed with considering the coupling effect of the variability of spatial distributions of rainfall and land uses. The performance of rain garden scenario is better than scenario of green roof and porous pavement. The most efficient scenario is the combination of the three practices that can reduce total runoff volume up to 51 % and peak discharge up to 53 % in the whole catchment, and the maximum values of the two indictors in three sub-catchments reach to 60 % and 61 % respectively. The results give credence that Multi-Hydro is a promising model for evaluating and quantifying the spatial variability of hydrological responses of LID/NBS practices, because of considering the heterogeneity of spatial distributions of precipitation and land uses. Potentially, it can guide the decision-making process of the design of LID/NBS practices in urban planning.

scholarly journals Hydraulic design model of underground bioretention system: a source control measure for wet weather urban stormwater management

2021 ◽  
Author(s):  
Zulhash Uddin
Keyword(s):  
Water Pollution ◽  
Stormwater Management ◽  
Control Measure ◽  
Low Impact Development ◽  
Design Model ◽  
Source Control ◽  
Bioretention System ◽  
Pollution Problem ◽  
Hydraulic Design ◽  
Wet Weather

The conventional practices of urbanization, land use strategies and stormwater management are considerably increasing the risk of wet weather flooding, downstream erosion and water pollution. To minimize the water pollution problem associated with the urban development various concepts of low impact development are being implemented. The city of Toronto has installed an underground bioretention system at Queensway Avenue. The hydraulic design criteria and specification of the underground bioretention system are not yet well developed. Hydraulic design model is developed using five mass balance equations of the five components of bioretention system. All design water depth variables of the bioretention system are solved simultaneously using Matlab program. An application of the model in Toronto is included to illustrate the design of the underground bioretention system.

Low Impact Development (LID) Approaches in Sustainable Stormwater Management

2013 ◽  
Vol 368-370 ◽  
pp. 297-301
Author(s):  
Chun Xiao Wang
Keyword(s):  
Stormwater Management ◽  
Low Impact Development ◽  
Land Development ◽  
Source Control ◽  
High Point ◽  
Research Status ◽  
The Usa ◽  
Sustainable Stormwater Management

Low Impact Development (LID), with a core conception of maintaining urban hydrological recycle through source control, is an approach to land development that works with nature to manage stormwater as close to its source as possible. This paper summarized the concept, principle, development and research status of LID, analysed the LID approaches in High Point Community in the USA, aiming to forward experience of sustainable stormwater management.

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