Flood Retention Lakes in a Rural‐Urban Catchment: Climate‐Dominated and Configuration‐Affected Performances

Flood retention lakes (RLs) are widely employed in rural‐urban catchments with low impacts on the natural environment. However, insights are lacking regarding the control of climate conditions on RLs' performances and how they are affected by different geographic configurations. This study appl...

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Bibliographic Details
Published in:Water resources research 2023-08, Vol.59 (8), p.n/a
Main Authors: Yan, Haochen, Guan, Mingfu, Kong, Yong
Format: Article
Language:English
Subjects:
Catchment area
Catchments
Climate
Climatic conditions
Configuration management
effectiveness evaluation
Environmental impact
Flood hazards
flood retention lake
Floods
geographic configurations
Hazard mitigation
hydrodynamic model
Hydrodynamic models
Hydrologic models
Hydrology
Lakes
lake‐river interactions
Mitigation
Natural environment
Numerical experiments
Performance assessment
Performance testing
Rainstorms
Retention
Rural environments
rural‐urban catchment
Two dimensional models
Upstream
Urban areas
Urban catchments
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Summary:Flood retention lakes (RLs) are widely employed in rural‐urban catchments with low impacts on the natural environment. However, insights are lacking regarding the control of climate conditions on RLs' performances and how they are affected by different geographic configurations. This study applies a 2D hydrodynamic model to perform a catchment‐scale performance assessment of RLs beyond the scope of analytical and hydrological models. We conduct extensive numerical experiments of rainstorm‐induced flooding in a rural‐urban catchment with a constructed RL and blueprinted ones upstream. Results demonstrate an L‐shaped band of satisfactory performance of the current RL in the frequency‐duration diagram, which coincides with short return periods (4 hr), or short durations (
ISSN:0043-1397
1944-7973
DOI:10.1029/2022WR032911