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Analysis of the Relationship between Extreme Rain Patterns and Maximum Runoff in Xuyi County Urban Area: Production Confluence of Urban Underlying Surface
Yun Niu1, Jing Dai2 and Qilong Ren3*
1School of Geography and Planning, Huaiyin Normal University, No. 111, Changjiang West Road, Huai’an 223300, China
2Nansha Middle School, Zhangjiagang 215600, China
3Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection Co-constructed by the Province and Ministry, Huai’an 223300, China
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Abstract:
The relationship between extreme rainfall and maximum runoff in Xuyi County, Huai’an City, Jiangsu Province, China was studied by using the Chicago rain pattern method, statistical analysis, and literature review. From 1957 to 2020, the average precipitation was 1015 mm with a fluctuating upward trend mainly in July-August which accounted for 40% of the total annual precipitation. The maximum evaporation occurred in June, accounting for 12.7% of the total annual evaporation. From 1957 to 2020, the average maximum daily precipitation was 45 mm, while the maximum precipitation was found as 233.2 mm on July 27, 1970. In the 120-minute rain pattern, the maximum precipitation coefficient was 0.4, and the rainfall intensity showed an unimodal distribution. The total annual runoff control rate increased from 60 to 95%, the corresponding design precipitation increased from 16.3 to 71.5 mm, and the growth rate of design precipitation became faster.
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Keywords: Extreme rain pattern, Maximum runoff, Production confluence, Urban underlying surface, Xuyi County
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Received:August 10, 2023; Revised:September 10, 2023; Accepted:September 20, 2023; Published:September 30, 2023
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*Corresponding author; e-mail: RenqL2008@163.com;
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Citation:Niu, Y., & Dai, J., & Ren, Q.(2023). Analysis of the Relationship between Extreme Rain Patterns and Maximum Runoff in Xuyi County Urban Area: Production Confluence of Urban Underlying Surface. International Journal of Environmental Sustainability and Protection, 3(3), 1-10. https://doi.org/10.35745/ijesp2023v03.03.0001
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Copyright: ©
2023
The Author(s). Published with license by IIKII, Singapore. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (CC BY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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