Flood Management in China: The Huaihe River Basin as a Case Study

Qian, Mingkai; Wang, Kai

doi:10.5772/intechopen.69047

Cited by 8 publications

(9 citation statements)

References 1 publication

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“…A floodplain is the area near the river channel that a fluvial flood inundates, with the water stage rising in the river. The flood routing in the composite flood control structural system, consisting of river channels, flood storage areas, floodplain areas, polder areas, and flood-control-protected areas, is very complex due to the hydrodynamic interaction among subsystems [13]. Moreover, the hydrograph in the river channel in the composite system is different from that in the individual river system, thereby affecting the operation of flood storage areas and other flood control measures [6,[14][15][16].…”

Section: Introductionmentioning

confidence: 99%

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Flood Modeling in a Composite System Consisting of River Channels, Flood Storage Areas, Floodplain Areas, Polder Areas, and Flood-Control-Protected Areas

Hu,

Qin,

Dong

et al. 2024

Water

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The Linhuaigang flood control project (LFCP), situated on the Huaihe River, China, uses the river channels upstream of the LFCP, together with the hinterland areas outside the channels, to retain and store fluvial floodwaters that exceed the downstream channel’s discharge capacity. The hinterland areas are split into seven flood storage areas, three floodplain areas, eight polder areas, and three flood-control-protected areas, and they are connected to the river in various ways. A coupled hydrodynamic model was established to simulate the hydrodynamic and water volume exchange between the river channels and the hinterland areas. The flood storage area, under the control of a flood diversion sluice, was simulated with a 2D hydrodynamic model, and the inflow process initiated by the flood diversion sluice was simulated as a control structure. The polder area was generalized as a reservoir that would be filled in several hours once put into use because of its small size. The uncontrolled inflow process between the flood-control-protected areas and the channel was simulated by means of a dam break model, which could simulate levee breaching. The flooding within the flood-control-protected area, which represents a vast space, was simulated with a 2D hydrodynamic model. The floodplain area was laterally connected to the river channel along the river levee. The difference between the simulated and the measured flood peak water stage did not exceed 0.2 m in 2003 and 2007, indicating that the accuracy of the model was relatively high. In the scenario of a design flood with a return period of 100 years, the flood storage areas and the LFCP were used in the following order: Mengwa, Qiujiahu, Nanrunduan, Shouxihu, Jiangtanghu, Chengxihu, Chengdonghu, and the LFCP. When the Huaihe River encounters a flood with a return period of 1000 years that exceeds the design standard, the highest water stage upstream of the LFCP and Zhengyangguan shall not exceed 29.30 m and 27.96 m after the use of all the flood storage areas, floodplain areas, and flood-control-protected areas. The results of this research can provide technical support for the flood risk management of the LFCP.

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Section: Introductionmentioning

confidence: 99%

“…The middle reaches of the Huaihe River are one of the areas in China that are prone to recurring floods [13]. The Huainan City, Bengbu City, and Cinan Feizuo flood-controlprotected areas [10] that lie on the Huaihe River downstream of Zhengyangguan are prioritized areas for protection during the catastrophic flood period.…”

Section: Introductionmentioning

confidence: 99%

Flood Modeling in a Composite System Consisting of River Channels, Flood Storage Areas, Floodplain Areas, Polder Areas, and Flood-Control-Protected Areas

Hu,

Qin,

Dong

et al. 2024

Water

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“…Furthermore, the Huai River basin (HRB) is an important economically developed region in China and has a population of more than 178 million, accounting for 13% of the total population in China. Moreover, the HRB is also an important grain production area in China, with a cultivated land area of approximately 190 million mu, accounting for approximately 12% of the cultivated land area in China (Qian, 2012; Qian & Wang, 2017). This region is located in the transition zone from subtropical to warm temperate areas (Fu et al, 2020; Liu et al, 2019) and possesses rapidly changing climate conditions (Xu et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Interdecadal variability of summer extreme rainfall in the Huai River basin of China associated with the Asian‐Pacific Oscillation

Liao

Zhao

2023

Intl Journal of Climatology

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Using the rainfall data at rain gauge stations in China and the European Center for Medium‐Range Weather Forecast (ECMWF) reanalysis, the daily Asian‐Pacific Oscillation (APO) index, a tropospheric temperature thermal contrast between Asia and the North Pacific, is constructed to investigate an interdecadal relationship between summer (June–July) APO and rainfall in the Huai River basin (HRB) of central‐eastern China. The daily APO index averaged over June 22–July 12 shows an interdecadal shift around the late 1990s. This shift is characterized by a negative phase of the daily APO index during 1987–1996 and a subsequent positive phase during 1997–2006. Accompanying this shift, the occurrence frequency, intensity and amount of extreme rainfall events remarkably increase in the HRB region. The increased rainfall can be reasonably explained by the atmospheric circulation anomalies. Corresponding to the decadal change in the summer daily APO from the negative phase to the positive one, the subtropical high pressure over the western North Pacific moves toward the north and easterly wind anomalies in the middle and lower layers of the troposphere prevail over extratropical East Asia, which strengthens water vapour convergence, the instability of atmospheric stratification and upward motion anomalies in the HRB region.

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“…Major recent flood disasters have occurred in 1991, 2003 and 2007 (for an overview of floods in earlier periods, see [22]). Huai River Basin Commission, as the responsible agency for flood risk management has developed and implemented many different structural and non-structural measures for reducing and mitigating flood risks [16,23]. Structural measures include numerous flood retention reservoirs in the upstream part of the basin, dikes and diversions, channel modifications for increasing drainage capacity in the middle and downstream part, and flood protection storage areas.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Flood Storage Area Operations in Huai River Using 1D and 2D River Simulation Models Coupled with Global Optimization Algorithms

et al. 2019

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This article addresses the issue of flood management using four flood storage areas in the middle section of Huai River in China which protect the important downstream city of Bengbu. The same areas are also used by the local population as residential and agricultural zones. An optimization problem is therefore posed, with two objectives of simultaneously minimizing the downstream flood risk in Bengbu city and the storage areas’ economic damages. The methodology involved development of river flood models using HEC-RAS, with varying complexity, such as 1-dimensional (1D) model with storage areas represented as lumped conceptual reservoirs, and 2-dimensional (2D) models with detailed representation of the terrain, land-use and hydrodynamics in the storage areas. Experiments of coupling these models with global optimization algorithms (NSGA-II, PESA-II and SPEA-II) were performed (using the HEC-RAS Controller), in which the two objective functions were minimized, while using stage differences between the river and the storage areas as decision variables for controlling the opening/closing of the gates at the lateral structures that link the river with the storage areas. The comparative analysis of the results indicate that more refined optimal operational strategies that spread the damages across all storage areas can be obtained only with the detailed flood simulation models, regardless of the optimization algorithm used.

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Flood Management in China: The Huaihe River Basin as a Case Study

Cited by 8 publications

References 1 publication

Flood Modeling in a Composite System Consisting of River Channels, Flood Storage Areas, Floodplain Areas, Polder Areas, and Flood-Control-Protected Areas

Flood Modeling in a Composite System Consisting of River Channels, Flood Storage Areas, Floodplain Areas, Polder Areas, and Flood-Control-Protected Areas

Interdecadal variability of summer extreme rainfall in the Huai River basin of China associated with the Asian‐Pacific Oscillation

Analysis of Flood Storage Area Operations in Huai River Using 1D and 2D River Simulation Models Coupled with Global Optimization Algorithms

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