教師資料查詢 | 類別: 期刊論文 | 教師: 洪貞伶 CHEN-LING HUNG (瀏覽個人網頁)

標題:Impacts of urban drainage systems on stormwater hydrology: Rocky Branch Watershed, Columbia, South Carolina
學年109
學期1
出版(發表)日期2020/09/01
作品名稱Impacts of urban drainage systems on stormwater hydrology: Rocky Branch Watershed, Columbia, South Carolina
作品名稱(其他語言)
著者Logan D. Ress; Chen‐Ling J. Hung; L. Allan James
單位
出版者
著錄名稱、卷期、頁數Journal of Flood Risk Management 13 (3), e12643
摘要Increases in impervious surfaces and land‐use changes associated with urbanization have long been the focus of urban hydrological research. However, studies and calculations that consider impervious surfaces alone do not encompass all factors that influence urban hydrologic response, as alternative urban structures may have a substantial effect on stormflow. This study examines several descriptors to improve estimations of hydrologic impacts of urbanization in small watersheds. Configurations of drainage densities that include storm sewers were computed for the highly urbanized Rocky Branch Watershed. Storm sewer configurations resulted in an approximate tripling of the drainage density. In addition, rainfall and stormflow data were analyzed to compare the hydrologic response of two subcatchments with varying percentages of impervious areas and drainage densities. The subcatchment with a higher percentage of impervious area produced significantly (p < .01) higher runoff volumes with an average runoff coefficient of 0.446, while the subcatchment with higher storm sewer densities displayed significantly shorter lag times of 9 min. In this case, the percentage of impervious area increased the volume of runoff but, storm sewer densities accelerated hydrologic responses, suggesting that hydrologically relevant metrics should be considered to accurate assess flood risk alternatives.
關鍵字flood generation; hydrology; rainfall runoff; urban drainage
語言英文(美國)
ISSN1753-318X
期刊性質國外
收錄於SCI;
產學合作國外;
通訊作者L. Allan James
審稿制度
國別美國
公開徵稿
出版型式,電子版,紙本
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