Research on Urban Rainwater Flood Regulation Methods in Central Yunnan Based on Sponge City Measures

Research on Urban Rainwater Flood Regulation Methods in Central Yunnan Based on Sponge City Measures | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Research on Urban Rainwater Flood Regulation Methods in Central Yunnan Based on Sponge City Measures jufang he, Hongbo Zhang, Xin He, Zhumei Luo, Yonghui Huang This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9431550/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 4 You are reading this latest preprint version Abstract China's urbanization has intensified drought and flooding issues. The Chenggong New District of Kunming City faces water resource shortages and urban flooding hazards. This study employed SWMM and Mike Urban model to simulate the effects of Sponge City Measures (SCMs). The results indicate that (1) the group of four SCMs demonstrates the best effect. For 50-year return period, the reduction rate of flood peak flow and inundated area are 24.52% and 43.18%, respectively.(2)the runoff coefficient decreases to 0.37 and the reducing rate for flooding risk level is 33.51%. (3) Green roof is the most effective, with an abatement rate of 0.72% per km 2 . (4) Retention Ponds volume accounts for 4.46% of 5-year return period flood, which satisfy the 5,000-acre green area's dry-season water needs or 27501 residents' domestic water use for one month. In conclusion, SCMs effectively address flooding and insufficient water supply issues in the study area. urban flooding Sponge City Measures SWMM and Mike Urban model flood resource utilization central Yunnan region Full Text Cite Share Download PDF Status: Under Review Version 1 posted Reviewers invited by journal 07 May, 2026 Editor invited by journal 07 May, 2026 Editor assigned by journal 16 Apr, 2026 First submitted to journal 16 Apr, 2026 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-9431550","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":636097966,"identity":"e32f92e6-86fb-44f8-82fd-ba6b3c203e0a","order_by":0,"name":"jufang he","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA2UlEQVRIiWNgGAWjYBACfv7+j4//VEjwMLY3HyBOi+SMA8YGPGds5Jh7jiUQp8XgQIKZAG9LmjH7jBwDIl124EAag2TD4cTeGTkfb7xhsJPTbSCgg7G54dgDwx2HE2f2vN1sOYch2djsAAEtzAwH2w0SzxxO3Nieu02ah+FA4jZCWtgYktkkDrYdTtx/IOcZcVp4GNLYJBvb0owZO3LYiNMiIXGG2ZgBGMiMPceMLecYEOEX+/M9jI8ZIFH58MabCjs5glpQreQhNmqQtJCqYxSMglEwCkYEAACMc0g1O5a2qAAAAABJRU5ErkJggg==","orcid":"https://orcid.org/0009-0003-9073-7363","institution":"Lijiang Cultural Tourism College","correspondingAuthor":true,"prefix":"","firstName":"jufang","middleName":"","lastName":"he","suffix":""},{"id":636097967,"identity":"6fcadca3-9e70-4b89-86b3-a96e953d9636","order_by":1,"name":"Hongbo Zhang","email":"","orcid":"","institution":"Kunming Institute of Technology: Kunming University of Science and Technology","correspondingAuthor":false,"prefix":"","firstName":"Hongbo","middleName":"","lastName":"Zhang","suffix":""},{"id":636097968,"identity":"1769e2bb-875c-4bfc-98be-b3e9b40f4fb0","order_by":2,"name":"Xin He","email":"","orcid":"","institution":"Lijiang Cultural Tourism College","correspondingAuthor":false,"prefix":"","firstName":"Xin","middleName":"","lastName":"He","suffix":""},{"id":636097969,"identity":"e0f90606-4930-4d27-8e8b-34816eabc25b","order_by":3,"name":"Zhumei Luo","email":"","orcid":"","institution":"Kunming Institute of Technology: Kunming University of Science and Technology","correspondingAuthor":false,"prefix":"","firstName":"Zhumei","middleName":"","lastName":"Luo","suffix":""},{"id":636097970,"identity":"b2777a3b-c408-44e5-9866-054668046de2","order_by":4,"name":"Yonghui Huang","email":"","orcid":"","institution":"Kunming Institute of Technology: Kunming University of Science and Technology","correspondingAuthor":false,"prefix":"","firstName":"Yonghui","middleName":"","lastName":"Huang","suffix":""}],"badges":[],"createdAt":"2026-04-16 00:19:16","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-9431550/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-9431550/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":109760177,"identity":"a9e7cdd7-c946-46de-932b-f0dc5e200a92","added_by":"auto","created_at":"2026-05-22 07:28:16","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1374901,"visible":true,"origin":"","legend":"","description":"","filename":"HeUrbanRainwaterFloodRegulationSpongeCityMeasures1.pdf","url":"https://assets-eu.researchsquare.com/files/rs-9431550/v1_covered_1d35e935-70c3-4797-a41c-5066330e2d8e.pdf"}],"financialInterests":"","formattedTitle":"Research on Urban Rainwater Flood Regulation Methods in Central Yunnan Based on Sponge City Measures","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"water-resources-management","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"warm","sideBox":"Learn more about [Water Resources Management](https://www.springer.com/journal/11269)","snPcode":"11269","submissionUrl":"https://submission.nature.com/new-submission/11269/3","title":"Water Resources Management","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"urban flooding, Sponge City Measures, SWMM and Mike Urban model, flood resource utilization, central Yunnan region","lastPublishedDoi":"10.21203/rs.3.rs-9431550/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-9431550/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eChina's urbanization has intensified drought and flooding issues. The Chenggong New District of Kunming City faces water resource shortages and urban flooding hazards. This study employed SWMM and Mike Urban model to simulate the effects of Sponge City Measures (SCMs). The results indicate that (1) the group of four SCMs demonstrates the best effect. For 50-year return period, the reduction rate of flood peak flow and inundated area are 24.52% and 43.18%, respectively.(2)the runoff coefficient decreases to 0.37 and the reducing rate for flooding risk level is 33.51%. (3) Green roof is the most effective, with an abatement rate of 0.72% per km\u003csup\u003e2\u003c/sup\u003e. (4) Retention Ponds volume accounts for 4.46% of 5-year return period flood, which satisfy the 5,000-acre green area's dry-season water needs or 27501 residents' domestic water use for one month. 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