Assessing the effects of urbanization on annual runoff and flood events using an integrated hydrological modeling system for Qinhuai River basin, China

Du, Jinkang; Li, Qian; Rui, Hanyi; Zuo, Tianhui; Zheng, Dapeng; Xu, Youpeng; Xu, Chong‐Yu

doi:10.1016/j.jhydrol.2012.06.057

Cited by 341 publications

(229 citation statements)

References 39 publications

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Section: Discussionmentioning

confidence: 99%

“…The elevation of the city centre is 425 m, while the elevation of the watershed upstream is around 1000 m as depicted by Figure 11. Other studies also report that the topography of the watershed may significantly contribute to increased storm runoff [1]. In order to illustrate the effect of the land cover change on runoff production, the raster layer of runoff depth values in 2014 was divided by the layer of runoff depth values in 1984.…”

Section: Discussionmentioning

confidence: 99%

“…The disaster affected the population of more than one million. Numerous studies have shown that the risk of storm flooding in an urban centre can be partly attributed to the increased replacement of natural land cover by built up areas [1,45]. The risk of flooding to Erbil city is also increased due to the slope of the watershed.…”

Section: Discussionmentioning

confidence: 99%

“…An assessment of the impact of land use changes on water resources is one of the recent thrusts in hydrological modelling [1][2][3]. It is expected that approximately 60% of the world's population will be living in urban areas by 2030.…”

Section: Introductionmentioning

confidence: 99%

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Estimating the Effect of Urban Growth on Annual Runoff Volume Using GIS in the Erbil Sub-Basin of the Kurdistan Region of Iraq

Hameed

2017

Hydrology

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Abstract:The growth and spread of impervious surfaces within urbanizing catchment areas pose signiificant threats to the quality of natural and built-up environments. Impervious surfaces prevent water infiltration into the soil, resulting in increased runoff generation. The Erbil Sub-basin was selected because the impervious cover is increasing rapidly and is affecting the hydrological condition of the watershed. The overall aim of this study is to examine the impact of urban growth and other changes in land use on runoff response during the study period of 1984 to 2014. The study describes long-term hydrologic responses within the rapidly developing catchment area of Erbil city, in the Kurdistan Region of Iraq. Data from six rainfall stations in and around the Erbil Sub-basin were used. A Digital Elevation Model (DEM) was also used to extract the distribution of the drainage network. Historical levels of urban growth and the corresponding impervious areas, as well as land use/land cover changes were mapped from 1984 to 2014 using a temporal satellite image (Landsat) to determine land use/land cover changes. Land use/land cover was combined with a hydrological model (SCS-CN) to estimate the volume of runoff from the watershed. The study indicates that the urbanization of the watershed has increased the impervious land cover by 71% for the period from 1984 to 2004 and by 51% from 2004 to 2014. The volume of runoff was 85% higher in 2014 as compared to 1984 due to the increase in the impervious surface area; this is attributed to urban growth. The study also points out that the slope of the watershed in the Erbil sub-basin should be taken into account in surface runoff estimation as the upstream part of the watershed has a high gradient and the land is almost barren with very little vegetation cover; this causes an increase in the velocity of the flow and increases the risk of flooding in Erbil city.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Estimating the Effect of Urban Growth on Annual Runoff Volume Using GIS in the Erbil Sub-Basin of the Kurdistan Region of Iraq

Hameed

2017

Hydrology

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“…Apart from high rainfall, another factor causing the increase of river discharge is the change in land use, e.g. forest into non-forest (Bruijnzeel 1990;Sahin & Hall 1996;Costa et al 2003;Du et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Effects of Forest Cover Change on Flood Characteristics in the Upper Citarum Watershed

Dasanto

Pramudya

Boer

et al. 2014

jtfm

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Rapid urbanization and changes in spatiotemporal characteristics of precipitation in Beijing metropolitan area

et al. 2014

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This study investigates changes in temporal trends and spatial patterns of precipitation in Beijing over the last six decades. These changes are discussed in the context of rapid urbanization and the growing imbalance between water supply and demand in Beijing. We observed significant decreases in precipitation amounts from 1950 to 2012, with the annual precipitation decreasing by 32% at a decadal rate of 28.5 mm. In particular, precipitation decrease is more pronounced in the summer and warm seasons when water use is at its seasonal peak. We further analyzed hourly precipitation data from 43 rain gauges between 1980 and 2012 to examine the spatiotemporal characteristics of both precipitation amount and intensity across six distinct subregions in Beijing. No significant spatial variations in precipitation changes were identified, but slightly greater amounts of precipitation were noted in the urban areas (plains) than in the surrounding suburbs (mountains), due to the effect of urbanization and topography. Precipitation intensity has increased substantially, especially at the hourly duration, as evidenced by the more frequent occurrence of extreme storms. The observed decreased water availability and the increase in extreme weather events require more integrated water management, particularly given the expectation of a warmer and more variable climate, the continued rapid growth of the Beijing metropolis, and the intensifying conflict between water supply and demand.

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Assessing the effects of urbanization on annual runoff and flood events using an integrated hydrological modeling system for Qinhuai River basin, China

Cited by 341 publications

References 39 publications

Estimating the Effect of Urban Growth on Annual Runoff Volume Using GIS in the Erbil Sub-Basin of the Kurdistan Region of Iraq

Estimating the Effect of Urban Growth on Annual Runoff Volume Using GIS in the Erbil Sub-Basin of the Kurdistan Region of Iraq

Effects of Forest Cover Change on Flood Characteristics in the Upper Citarum Watershed

Rapid urbanization and changes in spatiotemporal characteristics of precipitation in Beijing metropolitan area

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