Research on the effectiveness of Low Impact Development facilities in controlling stormwater in Northern Plain Cities

Key Points

• This research aims to evaluate the effectiveness of Low Impact Development facilities in managing stormwater in Northern Plain Cities.
• Developed a stormwater management model based on the urban district of Hengshui City.
• Analyzed the current drainage capacity and compared stormwater control effects before and after LID implementation.
• Simulated runoff control and urban flooding risks associated with heavy rainfall events.
• The annual runoff control rate increased to 76% post-LID implementation, improving by 14%.
• The flooding risk area decreased by 4.46 km², with all previously severe flooding points eliminated.
• Approximately 71.59 km² of the built-up area meets flooding prevention standards, achieving readiness for a 30-year rainfall event.