Compound Flood Risk Assessment of Extreme Rainfall and High River Water Level

Water, Journal Year: 2025, Volume and Issue: 17(6), P. 841 - 841

Published: March 14, 2025

Urban flooding is typically caused by multiple factors, with extreme rainfall and rising water levels in receiving bodies both contributing to increased flood risks. This study focuses on assessing urban risks Jinhua City, Zhejiang Province, China, considering the combined effects of high river levels. Using historical data from station (2005–2022), constructed a joint probability distribution via copula function. The findings show that risk significantly higher than each factor separately, indicating ignoring their interaction could greatly underestimate Scenario simulations using Infoworks ICM model demonstrate areas range 0.67% 5.39% under baseline scenario but increase 8.98–12.80% when 50a return period level. High play critical role increasing extent depth flooding, especially low coincides These highlight importance compound disaster-causing factors assessment can serve as reference for drainage control planning management.

Language: Английский

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Quantitative Analysis of Sponge City Construction and Function in the Main Urban Area of Chengdu

Water, Journal Year: 2025, Volume and Issue: 17(7), P. 933 - 933

Published: March 22, 2025

This study utilizes ArcGIS, the InVEST model, and SCS model to analyze remote sensing data from central urban areas of Chengdu. The analysis simulates water yield runoff within area while calculating conservation capacity for each land use type using balance method. aims address challenges faced by Chengdu in implementing its sponge city initiatives. results reveal that spatial distribution direct generally follows a pattern “low periphery high center”. Transportation, commercial, industrial, residential types account 74.7% total surface area, emphasizing their importance rainwater management development. Water varies across different types, with bodies exhibiting lowest artificial highest capacity. initially exhibited downward trend before increasing, type, climatic factors, vegetation coverage identified as primary drivers yield. gradually decreased, higher values observed east south lower north west. These trends differences can be attributed expansion alterations cover. Based on these findings, this assessed risk waterlogging provided recommendations optimizing low-impact development (LID) strategies. provides scientific foundation initiatives, mitigation, strategies

Language: Английский

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A Comprehensive Review of Cutting-Edge Flood Modelling Approaches for Urban Flood Resilience Enhancement

Water Conservation Science and Engineering, Journal Year: 2024, Volume and Issue: 10(1)

Published: Dec. 20, 2024

Language: Английский

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Urban Waterlogging Simulation and Disaster Risk Analysis Using InfoWorks Integrated Catchment Management: A Case Study from the Yushan Lake Area of Ma’anshan City in China

Water, Journal Year: 2024, Volume and Issue: 16(23), P. 3383 - 3383

Published: Nov. 25, 2024

Under the dual pressures of climate change and urbanization, cities in China are experiencing increasingly severe flooding. Using Yushan Lake area Ma’anshan City, Anhui Province, as a case study, we employed InfoWorks Integrated Catchment Management (ICM) hydraulic model to analyze drainage flood prevention system region assess current infrastructure for control. There 117 pipelines with return period lower than one year stormwater combined sewer systems, accounting 12.3% total number pipelines. The meeting one-year but not three-year standard is 700, representing 70.2%. Only 17.5% capable handling events exceeding standard. In simulating 24 h, 30-year rainfall event, results indicate that floodwater accumulation study predominantly between 0.15 m 0.3 m. Most risk areas classified low risk, covering an 36.398 hectares, followed by medium high-risk areas, which cover 8.226 hectares 3.087 respectively. has, overall, certain control capabilities faces risks during storms periods three years. This research offers valuable insights improving urban management City through development area.

Language: Английский

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Multidimensional Urban Waterlogging Risk Assessment Based on a Refined Inundation Model

Sustainability, Journal Year: 2024, Volume and Issue: 17(1), P. 135 - 135

Published: Dec. 27, 2024

To enhance the scientific and accurate assessment methods for urban waterlogging risk in City B to promote sustainable development, this paper conducts a detailed evaluation of from three dimensions: pedestrian safety, road traffic, waterlogging-prone areas. After considering existing monitoring technologies constructed model, identifies standing water depth, duration, velocity as key indicators utilizes scenario simulation evaluate across these dimensions. Additionally, employs boundary conditions 2-h short-duration rainfall with 5-year return period 24-h long-duration 50-year assessment. The results indicate that, under both short conditions, low-risk areas represent largest proportion areas, reaching 6.36% 10.83% total area, respectively. In traffic assessment, proportions severely congested roads short- are 27.06% 57.15%, high-risk account 0.64% 1.42%

Language: Английский

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